diff options
Diffstat (limited to 'fs')
696 files changed, 21814 insertions, 17734 deletions
diff --git a/fs/9p/acl.c b/fs/9p/acl.c index 7af425f53bee..8482f2d11606 100644 --- a/fs/9p/acl.c +++ b/fs/9p/acl.c @@ -156,7 +156,7 @@ int v9fs_acl_chmod(struct inode *inode, struct p9_fid *fid) return -EOPNOTSUPP; acl = v9fs_get_cached_acl(inode, ACL_TYPE_ACCESS); if (acl) { - retval = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); + retval = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); if (retval) return retval; set_cached_acl(inode, ACL_TYPE_ACCESS, acl); @@ -200,7 +200,7 @@ int v9fs_acl_mode(struct inode *dir, umode_t *modep, if (acl) { if (S_ISDIR(mode)) *dpacl = posix_acl_dup(acl); - retval = posix_acl_create(&acl, GFP_NOFS, &mode); + retval = __posix_acl_create(&acl, GFP_NOFS, &mode); if (retval < 0) return retval; if (retval > 0) diff --git a/fs/9p/cache.c b/fs/9p/cache.c index 2b7a032c37bc..a69260f27555 100644 --- a/fs/9p/cache.c +++ b/fs/9p/cache.c @@ -239,13 +239,12 @@ void v9fs_cache_inode_flush_cookie(struct inode *inode) void v9fs_cache_inode_set_cookie(struct inode *inode, struct file *filp) { struct v9fs_inode *v9inode = V9FS_I(inode); - struct p9_fid *fid; if (!v9inode->fscache) return; spin_lock(&v9inode->fscache_lock); - fid = filp->private_data; + if ((filp->f_flags & O_ACCMODE) != O_RDONLY) v9fs_cache_inode_flush_cookie(inode); else diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c index 08f2e1e9a7e6..14da82564f4e 100644 --- a/fs/9p/v9fs.c +++ b/fs/9p/v9fs.c @@ -56,7 +56,7 @@ enum { /* Options that take no arguments */ Opt_nodevmap, /* Cache options */ - Opt_cache_loose, Opt_fscache, + Opt_cache_loose, Opt_fscache, Opt_mmap, /* Access options */ Opt_access, Opt_posixacl, /* Error token */ @@ -74,6 +74,7 @@ static const match_table_t tokens = { {Opt_cache, "cache=%s"}, {Opt_cache_loose, "loose"}, {Opt_fscache, "fscache"}, + {Opt_mmap, "mmap"}, {Opt_cachetag, "cachetag=%s"}, {Opt_access, "access=%s"}, {Opt_posixacl, "posixacl"}, @@ -91,6 +92,9 @@ static int get_cache_mode(char *s) } else if (!strcmp(s, "fscache")) { version = CACHE_FSCACHE; p9_debug(P9_DEBUG_9P, "Cache mode: fscache\n"); + } else if (!strcmp(s, "mmap")) { + version = CACHE_MMAP; + p9_debug(P9_DEBUG_9P, "Cache mode: mmap\n"); } else if (!strcmp(s, "none")) { version = CACHE_NONE; p9_debug(P9_DEBUG_9P, "Cache mode: none\n"); @@ -220,6 +224,9 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts) case Opt_fscache: v9ses->cache = CACHE_FSCACHE; break; + case Opt_mmap: + v9ses->cache = CACHE_MMAP; + break; case Opt_cachetag: #ifdef CONFIG_9P_FSCACHE v9ses->cachetag = match_strdup(&args[0]); diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h index a8e127c89627..099c7712631c 100644 --- a/fs/9p/v9fs.h +++ b/fs/9p/v9fs.h @@ -64,6 +64,7 @@ enum p9_session_flags { enum p9_cache_modes { CACHE_NONE, + CACHE_MMAP, CACHE_LOOSE, CACHE_FSCACHE, }; diff --git a/fs/9p/v9fs_vfs.h b/fs/9p/v9fs_vfs.h index dc95a252523d..b83ebfbf3fdc 100644 --- a/fs/9p/v9fs_vfs.h +++ b/fs/9p/v9fs_vfs.h @@ -50,6 +50,8 @@ extern const struct dentry_operations v9fs_dentry_operations; extern const struct dentry_operations v9fs_cached_dentry_operations; extern const struct file_operations v9fs_cached_file_operations; extern const struct file_operations v9fs_cached_file_operations_dotl; +extern const struct file_operations v9fs_mmap_file_operations; +extern const struct file_operations v9fs_mmap_file_operations_dotl; extern struct kmem_cache *v9fs_inode_cache; struct inode *v9fs_alloc_inode(struct super_block *sb); diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c index 9ff073f4090a..c71e88602ff4 100644 --- a/fs/9p/vfs_addr.c +++ b/fs/9p/vfs_addr.c @@ -202,6 +202,8 @@ static int v9fs_vfs_writepage(struct page *page, struct writeback_control *wbc) { int retval; + p9_debug(P9_DEBUG_VFS, "page %p\n", page); + retval = v9fs_vfs_writepage_locked(page); if (retval < 0) { if (retval == -EAGAIN) { @@ -282,6 +284,9 @@ static int v9fs_write_begin(struct file *filp, struct address_space *mapping, pgoff_t index = pos >> PAGE_CACHE_SHIFT; struct inode *inode = mapping->host; + + p9_debug(P9_DEBUG_VFS, "filp %p, mapping %p\n", filp, mapping); + v9inode = V9FS_I(inode); start: page = grab_cache_page_write_begin(mapping, index, flags); @@ -312,6 +317,8 @@ static int v9fs_write_end(struct file *filp, struct address_space *mapping, loff_t last_pos = pos + copied; struct inode *inode = page->mapping->host; + p9_debug(P9_DEBUG_VFS, "filp %p, mapping %p\n", filp, mapping); + if (unlikely(copied < len)) { /* * zero out the rest of the area diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index a0df3e73c2b1..d8223209d4b1 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -45,6 +45,7 @@ #include "cache.h" static const struct vm_operations_struct v9fs_file_vm_ops; +static const struct vm_operations_struct v9fs_mmap_file_vm_ops; /** * v9fs_file_open - open a file (or directory) @@ -87,7 +88,8 @@ int v9fs_file_open(struct inode *inode, struct file *file) file->private_data = fid; mutex_lock(&v9inode->v_mutex); - if (v9ses->cache && !v9inode->writeback_fid && + if ((v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) && + !v9inode->writeback_fid && ((file->f_flags & O_ACCMODE) != O_RDONLY)) { /* * clone a fid and add it to writeback_fid @@ -105,7 +107,7 @@ int v9fs_file_open(struct inode *inode, struct file *file) v9inode->writeback_fid = (void *) fid; } mutex_unlock(&v9inode->v_mutex); - if (v9ses->cache) + if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) v9fs_cache_inode_set_cookie(inode, file); return 0; out_error: @@ -461,14 +463,12 @@ v9fs_file_write_internal(struct inode *inode, struct p9_fid *fid, int n; loff_t i_size; size_t total = 0; - struct p9_client *clnt; loff_t origin = *offset; unsigned long pg_start, pg_end; p9_debug(P9_DEBUG_VFS, "data %p count %d offset %x\n", data, (int)count, (int)*offset); - clnt = fid->clnt; do { n = p9_client_write(fid, NULL, data+total, origin+total, count); if (n <= 0) @@ -581,11 +581,12 @@ int v9fs_file_fsync_dotl(struct file *filp, loff_t start, loff_t end, } static int -v9fs_file_mmap(struct file *file, struct vm_area_struct *vma) +v9fs_file_mmap(struct file *filp, struct vm_area_struct *vma) { int retval; - retval = generic_file_mmap(file, vma); + + retval = generic_file_mmap(filp, vma); if (!retval) vma->vm_ops = &v9fs_file_vm_ops; @@ -593,6 +594,43 @@ v9fs_file_mmap(struct file *file, struct vm_area_struct *vma) } static int +v9fs_mmap_file_mmap(struct file *filp, struct vm_area_struct *vma) +{ + int retval; + struct inode *inode; + struct v9fs_inode *v9inode; + struct p9_fid *fid; + + inode = file_inode(filp); + v9inode = V9FS_I(inode); + mutex_lock(&v9inode->v_mutex); + if (!v9inode->writeback_fid && + (vma->vm_flags & VM_WRITE)) { + /* + * clone a fid and add it to writeback_fid + * we do it during mmap instead of + * page dirty time via write_begin/page_mkwrite + * because we want write after unlink usecase + * to work. + */ + fid = v9fs_writeback_fid(filp->f_path.dentry); + if (IS_ERR(fid)) { + retval = PTR_ERR(fid); + mutex_unlock(&v9inode->v_mutex); + return retval; + } + v9inode->writeback_fid = (void *) fid; + } + mutex_unlock(&v9inode->v_mutex); + + retval = generic_file_mmap(filp, vma); + if (!retval) + vma->vm_ops = &v9fs_mmap_file_vm_ops; + + return retval; +} + +static int v9fs_vm_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) { struct v9fs_inode *v9inode; @@ -660,6 +698,22 @@ v9fs_cached_file_read(struct file *filp, char __user *data, size_t count, return do_sync_read(filp, data, count, offset); } +/** + * v9fs_mmap_file_read - read from a file + * @filp: file pointer to read + * @udata: user data buffer to read data into + * @count: size of buffer + * @offset: offset at which to read data + * + */ +static ssize_t +v9fs_mmap_file_read(struct file *filp, char __user *data, size_t count, + loff_t *offset) +{ + /* TODO: Check if there are dirty pages */ + return v9fs_file_read(filp, data, count, offset); +} + static ssize_t v9fs_direct_write(struct file *filp, const char __user * data, size_t count, loff_t *offsetp) @@ -730,8 +784,63 @@ v9fs_cached_file_write(struct file *filp, const char __user * data, return do_sync_write(filp, data, count, offset); } + +/** + * v9fs_mmap_file_write - write to a file + * @filp: file pointer to write + * @data: data buffer to write data from + * @count: size of buffer + * @offset: offset at which to write data + * + */ +static ssize_t +v9fs_mmap_file_write(struct file *filp, const char __user *data, + size_t count, loff_t *offset) +{ + /* + * TODO: invalidate mmaps on filp's inode between + * offset and offset+count + */ + return v9fs_file_write(filp, data, count, offset); +} + +static void v9fs_mmap_vm_close(struct vm_area_struct *vma) +{ + struct inode *inode; + + struct writeback_control wbc = { + .nr_to_write = LONG_MAX, + .sync_mode = WB_SYNC_ALL, + .range_start = vma->vm_pgoff * PAGE_SIZE, + /* absolute end, byte at end included */ + .range_end = vma->vm_pgoff * PAGE_SIZE + + (vma->vm_end - vma->vm_start - 1), + }; + + + p9_debug(P9_DEBUG_VFS, "9p VMA close, %p, flushing", vma); + + inode = file_inode(vma->vm_file); + + if (!mapping_cap_writeback_dirty(inode->i_mapping)) + wbc.nr_to_write = 0; + + might_sleep(); + sync_inode(inode, &wbc); +} + + static const struct vm_operations_struct v9fs_file_vm_ops = { .fault = filemap_fault, + .map_pages = filemap_map_pages, + .page_mkwrite = v9fs_vm_page_mkwrite, + .remap_pages = generic_file_remap_pages, +}; + +static const struct vm_operations_struct v9fs_mmap_file_vm_ops = { + .close = v9fs_mmap_vm_close, + .fault = filemap_fault, + .map_pages = filemap_map_pages, .page_mkwrite = v9fs_vm_page_mkwrite, .remap_pages = generic_file_remap_pages, }; @@ -786,3 +895,26 @@ const struct file_operations v9fs_file_operations_dotl = { .mmap = generic_file_readonly_mmap, .fsync = v9fs_file_fsync_dotl, }; + +const struct file_operations v9fs_mmap_file_operations = { + .llseek = generic_file_llseek, + .read = v9fs_mmap_file_read, + .write = v9fs_mmap_file_write, + .open = v9fs_file_open, + .release = v9fs_dir_release, + .lock = v9fs_file_lock, + .mmap = v9fs_mmap_file_mmap, + .fsync = v9fs_file_fsync, +}; + +const struct file_operations v9fs_mmap_file_operations_dotl = { + .llseek = generic_file_llseek, + .read = v9fs_mmap_file_read, + .write = v9fs_mmap_file_write, + .open = v9fs_file_open, + .release = v9fs_dir_release, + .lock = v9fs_file_lock_dotl, + .flock = v9fs_file_flock_dotl, + .mmap = v9fs_mmap_file_mmap, + .fsync = v9fs_file_fsync_dotl, +}; diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c index 4e65aa903345..53161ec058a7 100644 --- a/fs/9p/vfs_inode.c +++ b/fs/9p/vfs_inode.c @@ -299,15 +299,22 @@ int v9fs_init_inode(struct v9fs_session_info *v9ses, case S_IFREG: if (v9fs_proto_dotl(v9ses)) { inode->i_op = &v9fs_file_inode_operations_dotl; - if (v9ses->cache) + if (v9ses->cache == CACHE_LOOSE || + v9ses->cache == CACHE_FSCACHE) inode->i_fop = &v9fs_cached_file_operations_dotl; + else if (v9ses->cache == CACHE_MMAP) + inode->i_fop = &v9fs_mmap_file_operations_dotl; else inode->i_fop = &v9fs_file_operations_dotl; } else { inode->i_op = &v9fs_file_inode_operations; - if (v9ses->cache) - inode->i_fop = &v9fs_cached_file_operations; + if (v9ses->cache == CACHE_LOOSE || + v9ses->cache == CACHE_FSCACHE) + inode->i_fop = + &v9fs_cached_file_operations; + else if (v9ses->cache == CACHE_MMAP) + inode->i_fop = &v9fs_mmap_file_operations; else inode->i_fop = &v9fs_file_operations; } @@ -444,7 +451,7 @@ void v9fs_evict_inode(struct inode *inode) { struct v9fs_inode *v9inode = V9FS_I(inode); - truncate_inode_pages(inode->i_mapping, 0); + truncate_inode_pages_final(inode->i_mapping); clear_inode(inode); filemap_fdatawrite(inode->i_mapping); @@ -779,7 +786,6 @@ struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) { struct dentry *res; - struct super_block *sb; struct v9fs_session_info *v9ses; struct p9_fid *dfid, *fid; struct inode *inode; @@ -791,7 +797,6 @@ struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry, if (dentry->d_name.len > NAME_MAX) return ERR_PTR(-ENAMETOOLONG); - sb = dir->i_sb; v9ses = v9fs_inode2v9ses(dir); /* We can walk d_parent because we hold the dir->i_mutex */ dfid = v9fs_fid_lookup(dentry->d_parent); @@ -812,7 +817,7 @@ struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry, * unlink. For cached mode create calls request for new * inode. But with cache disabled, lookup should do this. */ - if (v9ses->cache) + if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) inode = v9fs_get_inode_from_fid(v9ses, fid, dir->i_sb); else inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb); @@ -863,7 +868,7 @@ v9fs_vfs_atomic_open(struct inode *dir, struct dentry *dentry, return finish_no_open(file, res); err = 0; - fid = NULL; + v9ses = v9fs_inode2v9ses(dir); perm = unixmode2p9mode(v9ses, mode); fid = v9fs_create(v9ses, dir, dentry, NULL, perm, @@ -878,7 +883,8 @@ v9fs_vfs_atomic_open(struct inode *dir, struct dentry *dentry, v9fs_invalidate_inode_attr(dir); v9inode = V9FS_I(dentry->d_inode); mutex_lock(&v9inode->v_mutex); - if (v9ses->cache && !v9inode->writeback_fid && + if ((v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) && + !v9inode->writeback_fid && ((flags & O_ACCMODE) != O_RDONLY)) { /* * clone a fid and add it to writeback_fid @@ -901,7 +907,7 @@ v9fs_vfs_atomic_open(struct inode *dir, struct dentry *dentry, goto error; file->private_data = fid; - if (v9ses->cache) + if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) v9fs_cache_inode_set_cookie(dentry->d_inode, file); *opened |= FILE_CREATED; @@ -1479,7 +1485,7 @@ int v9fs_refresh_inode(struct p9_fid *fid, struct inode *inode) */ i_size = inode->i_size; v9fs_stat2inode(st, inode, inode->i_sb); - if (v9ses->cache) + if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) inode->i_size = i_size; spin_unlock(&inode->i_lock); out: diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c index 4c10edec26a0..59dc8e87647f 100644 --- a/fs/9p/vfs_inode_dotl.c +++ b/fs/9p/vfs_inode_dotl.c @@ -330,7 +330,8 @@ v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry, v9inode = V9FS_I(inode); mutex_lock(&v9inode->v_mutex); - if (v9ses->cache && !v9inode->writeback_fid && + if ((v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) && + !v9inode->writeback_fid && ((flags & O_ACCMODE) != O_RDONLY)) { /* * clone a fid and add it to writeback_fid @@ -353,7 +354,7 @@ v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry, if (err) goto err_clunk_old_fid; file->private_data = ofid; - if (v9ses->cache) + if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) v9fs_cache_inode_set_cookie(inode, file); *opened |= FILE_CREATED; out: @@ -473,13 +474,11 @@ static int v9fs_vfs_getattr_dotl(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) { - int err; struct v9fs_session_info *v9ses; struct p9_fid *fid; struct p9_stat_dotl *st; p9_debug(P9_DEBUG_VFS, "dentry: %p\n", dentry); - err = -EPERM; v9ses = v9fs_dentry2v9ses(dentry); if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { generic_fillattr(dentry->d_inode, stat); @@ -556,7 +555,6 @@ static int v9fs_mapped_iattr_valid(int iattr_valid) int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr) { int retval; - struct v9fs_session_info *v9ses; struct p9_fid *fid; struct p9_iattr_dotl p9attr; struct inode *inode = dentry->d_inode; @@ -577,8 +575,6 @@ int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr) p9attr.mtime_sec = iattr->ia_mtime.tv_sec; p9attr.mtime_nsec = iattr->ia_mtime.tv_nsec; - retval = -EPERM; - v9ses = v9fs_dentry2v9ses(dentry); fid = v9fs_fid_lookup(dentry); if (IS_ERR(fid)) return PTR_ERR(fid); @@ -715,7 +711,7 @@ v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry, } v9fs_invalidate_inode_attr(dir); - if (v9ses->cache) { + if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) { /* Now walk from the parent so we can get an unopened fid. */ fid = p9_client_walk(dfid, 1, &name, 1); if (IS_ERR(fid)) { @@ -768,7 +764,6 @@ v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry) { int err; - char *name; struct dentry *dir_dentry; struct p9_fid *dfid, *oldfid; struct v9fs_session_info *v9ses; @@ -786,8 +781,6 @@ v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir, if (IS_ERR(oldfid)) return PTR_ERR(oldfid); - name = (char *) dentry->d_name.name; - err = p9_client_link(dfid, oldfid, (char *)dentry->d_name.name); if (err < 0) { @@ -973,7 +966,7 @@ int v9fs_refresh_inode_dotl(struct p9_fid *fid, struct inode *inode) */ i_size = inode->i_size; v9fs_stat2inode_dotl(st, inode); - if (v9ses->cache) + if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) inode->i_size = i_size; spin_unlock(&inode->i_lock); out: diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c index 2756dcd5de6e..0afd0382822b 100644 --- a/fs/9p/vfs_super.c +++ b/fs/9p/vfs_super.c @@ -144,7 +144,7 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags, } v9fs_fill_super(sb, v9ses, flags, data); - if (v9ses->cache) + if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) sb->s_d_op = &v9fs_cached_dentry_operations; else sb->s_d_op = &v9fs_dentry_operations; @@ -282,7 +282,7 @@ static int v9fs_drop_inode(struct inode *inode) { struct v9fs_session_info *v9ses; v9ses = v9fs_inode2v9ses(inode); - if (v9ses->cache) + if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) return generic_drop_inode(inode); /* * in case of non cached mode always drop the @@ -325,10 +325,12 @@ static int v9fs_write_inode_dotl(struct inode *inode, * send an fsync request to server irrespective of * wbc->sync_mode. */ - p9_debug(P9_DEBUG_VFS, "%s: inode %p\n", __func__, inode); v9inode = V9FS_I(inode); + p9_debug(P9_DEBUG_VFS, "%s: inode %p, writeback_fid %p\n", + __func__, inode, v9inode->writeback_fid); if (!v9inode->writeback_fid) return 0; + ret = p9_client_fsync(v9inode->writeback_fid, 0); if (ret < 0) { __mark_inode_dirty(inode, I_DIRTY_DATASYNC); diff --git a/fs/9p/xattr.c b/fs/9p/xattr.c index 3c28cdfb8c47..04133a1fd9cb 100644 --- a/fs/9p/xattr.c +++ b/fs/9p/xattr.c @@ -138,8 +138,7 @@ int v9fs_fid_xattr_set(struct p9_fid *fid, const char *name, if (retval < 0) { p9_debug(P9_DEBUG_VFS, "p9_client_xattrcreate failed %d\n", retval); - p9_client_clunk(fid); - return retval; + goto err; } msize = fid->clnt->msize; while (value_len) { @@ -152,12 +151,15 @@ int v9fs_fid_xattr_set(struct p9_fid *fid, const char *name, if (write_count < 0) { /* error in xattr write */ retval = write_count; - break; + goto err; } offset += write_count; value_len -= write_count; } - return p9_client_clunk(fid); + retval = offset; +err: + p9_client_clunk(fid); + return retval; } ssize_t v9fs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size) diff --git a/fs/Kconfig b/fs/Kconfig index c229f828eb01..312393f32948 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -68,10 +68,6 @@ source "fs/quota/Kconfig" source "fs/autofs4/Kconfig" source "fs/fuse/Kconfig" -config GENERIC_ACL - bool - select FS_POSIX_ACL - menu "Caches" source "fs/fscache/Kconfig" @@ -100,6 +96,7 @@ endif # BLOCK menu "Pseudo filesystems" source "fs/proc/Kconfig" +source "fs/kernfs/Kconfig" source "fs/sysfs/Kconfig" config TMPFS @@ -119,7 +116,7 @@ config TMPFS_POSIX_ACL bool "Tmpfs POSIX Access Control Lists" depends on TMPFS select TMPFS_XATTR - select GENERIC_ACL + select FS_POSIX_ACL help POSIX Access Control Lists (ACLs) support additional access rights for users and groups beyond the standard owner/group/world scheme, diff --git a/fs/Makefile b/fs/Makefile index 4fe6df3ec28f..f9cb9876e466 100644 --- a/fs/Makefile +++ b/fs/Makefile @@ -42,9 +42,8 @@ obj-$(CONFIG_BINFMT_SOM) += binfmt_som.o obj-$(CONFIG_BINFMT_FLAT) += binfmt_flat.o obj-$(CONFIG_FS_MBCACHE) += mbcache.o -obj-$(CONFIG_FS_POSIX_ACL) += posix_acl.o xattr_acl.o +obj-$(CONFIG_FS_POSIX_ACL) += posix_acl.o obj-$(CONFIG_NFS_COMMON) += nfs_common/ -obj-$(CONFIG_GENERIC_ACL) += generic_acl.o obj-$(CONFIG_COREDUMP) += coredump.o obj-$(CONFIG_SYSCTL) += drop_caches.o @@ -53,6 +52,7 @@ obj-$(CONFIG_FHANDLE) += fhandle.o obj-y += quota/ obj-$(CONFIG_PROC_FS) += proc/ +obj-$(CONFIG_KERNFS) += kernfs/ obj-$(CONFIG_SYSFS) += sysfs/ obj-$(CONFIG_CONFIGFS_FS) += configfs/ obj-y += devpts/ diff --git a/fs/adfs/super.c b/fs/adfs/super.c index 7b3003cb6f1b..9852bdf34d76 100644 --- a/fs/adfs/super.c +++ b/fs/adfs/super.c @@ -212,6 +212,7 @@ static int parse_options(struct super_block *sb, char *options) static int adfs_remount(struct super_block *sb, int *flags, char *data) { + sync_filesystem(sb); *flags |= MS_NODIRATIME; return parse_options(sb, data); } @@ -265,7 +266,7 @@ static void init_once(void *foo) inode_init_once(&ei->vfs_inode); } -static int init_inodecache(void) +static int __init init_inodecache(void) { adfs_inode_cachep = kmem_cache_create("adfs_inode_cache", sizeof(struct adfs_inode_info), diff --git a/fs/affs/affs.h b/fs/affs/affs.h index 3952121f2f28..25b23b1e7f22 100644 --- a/fs/affs/affs.h +++ b/fs/affs/affs.h @@ -5,14 +5,6 @@ #include <linux/mutex.h> #include <linux/workqueue.h> -/* AmigaOS allows file names with up to 30 characters length. - * Names longer than that will be silently truncated. If you - * want to disallow this, comment out the following #define. - * Creating filesystem objects with longer names will then - * result in an error (ENAMETOOLONG). - */ -/*#define AFFS_NO_TRUNCATE */ - /* Ugly macros make the code more pretty. */ #define GET_END_PTR(st,p,sz) ((st *)((char *)(p)+((sz)-sizeof(st)))) @@ -28,7 +20,6 @@ #define AFFS_CACHE_SIZE PAGE_SIZE -#define AFFS_MAX_PREALLOC 32 #define AFFS_LC_SIZE (AFFS_CACHE_SIZE/sizeof(u32)/2) #define AFFS_AC_SIZE (AFFS_CACHE_SIZE/sizeof(struct affs_ext_key)/2) #define AFFS_AC_MASK (AFFS_AC_SIZE-1) @@ -118,6 +109,7 @@ struct affs_sb_info { #define SF_OFS 0x0200 /* Old filesystem */ #define SF_PREFIX 0x0400 /* Buffer for prefix is allocated */ #define SF_VERBOSE 0x0800 /* Talk about fs when mounting */ +#define SF_NO_TRUNCATE 0x1000 /* Don't truncate filenames */ /* short cut to get to the affs specific sb data */ static inline struct affs_sb_info *AFFS_SB(struct super_block *sb) @@ -137,9 +129,13 @@ extern void affs_fix_checksum(struct super_block *sb, struct buffer_head *bh); extern void secs_to_datestamp(time_t secs, struct affs_date *ds); extern umode_t prot_to_mode(u32 prot); extern void mode_to_prot(struct inode *inode); -extern void affs_error(struct super_block *sb, const char *function, const char *fmt, ...); -extern void affs_warning(struct super_block *sb, const char *function, const char *fmt, ...); -extern int affs_check_name(const unsigned char *name, int len); +extern void affs_error(struct super_block *sb, const char *function, + const char *fmt, ...); +extern void affs_warning(struct super_block *sb, const char *function, + const char *fmt, ...); +extern bool affs_nofilenametruncate(const struct dentry *dentry); +extern int affs_check_name(const unsigned char *name, int len, + bool notruncate); extern int affs_copy_name(unsigned char *bstr, struct dentry *dentry); /* bitmap. c */ diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c index d9a43674cb94..533a322c41c0 100644 --- a/fs/affs/amigaffs.c +++ b/fs/affs/amigaffs.c @@ -471,20 +471,27 @@ affs_warning(struct super_block *sb, const char *function, const char *fmt, ...) function,ErrorBuffer); } +bool +affs_nofilenametruncate(const struct dentry *dentry) +{ + struct inode *inode = dentry->d_inode; + return AFFS_SB(inode->i_sb)->s_flags & SF_NO_TRUNCATE; + +} + /* Check if the name is valid for a affs object. */ int -affs_check_name(const unsigned char *name, int len) +affs_check_name(const unsigned char *name, int len, bool notruncate) { int i; - if (len > 30) -#ifdef AFFS_NO_TRUNCATE - return -ENAMETOOLONG; -#else - len = 30; -#endif - + if (len > 30) { + if (notruncate) + return -ENAMETOOLONG; + else + len = 30; + } for (i = 0; i < len; i++) { if (name[i] < ' ' || name[i] == ':' || (name[i] > 0x7e && name[i] < 0xa0)) diff --git a/fs/affs/dir.c b/fs/affs/dir.c index f1eba8c3644e..cbbda476a805 100644 --- a/fs/affs/dir.c +++ b/fs/affs/dir.c @@ -52,8 +52,10 @@ affs_readdir(struct file *file, struct dir_context *ctx) int hash_pos; int chain_pos; u32 ino; + int error = 0; - pr_debug("AFFS: readdir(ino=%lu,f_pos=%lx)\n",inode->i_ino,(unsigned long)ctx->pos); + pr_debug("AFFS: readdir(ino=%lu,f_pos=%lx)\n", + inode->i_ino, (unsigned long)ctx->pos); if (ctx->pos < 2) { file->private_data = (void *)0; @@ -72,7 +74,7 @@ affs_readdir(struct file *file, struct dir_context *ctx) } dir_bh = affs_bread(sb, inode->i_ino); if (!dir_bh) - goto readdir_out; + goto out_unlock_dir; /* If the directory hasn't changed since the last call to readdir(), * we can jump directly to where we left off. @@ -88,7 +90,8 @@ affs_readdir(struct file *file, struct dir_context *ctx) fh_bh = affs_bread(sb, ino); if (!fh_bh) { affs_error(sb, "readdir","Cannot read block %d", i); - return -EIO; + error = -EIO; + goto out_brelse_dir; } ino = be32_to_cpu(AFFS_TAIL(sb, fh_bh)->hash_chain); affs_brelse(fh_bh); @@ -107,29 +110,34 @@ inside: do { fh_bh = affs_bread(sb, ino); if (!fh_bh) { - affs_error(sb, "readdir","Cannot read block %d", ino); + affs_error(sb, "readdir", + "Cannot read block %d", ino); break; } namelen = min(AFFS_TAIL(sb, fh_bh)->name[0], (u8)30); name = AFFS_TAIL(sb, fh_bh)->name + 1; - pr_debug("AFFS: readdir(): filldir(\"%.*s\", ino=%u), hash=%d, f_pos=%x\n", + pr_debug("AFFS: readdir(): dir_emit(\"%.*s\", " + "ino=%u), hash=%d, f_pos=%x\n", namelen, name, ino, hash_pos, (u32)ctx->pos); + if (!dir_emit(ctx, name, namelen, ino, DT_UNKNOWN)) - goto readdir_done; + goto done; ctx->pos++; ino = be32_to_cpu(AFFS_TAIL(sb, fh_bh)->hash_chain); affs_brelse(fh_bh); fh_bh = NULL; } while (ino); } -readdir_done: +done: file->f_version = inode->i_version; file->private_data = (void *)(long)ino; + affs_brelse(fh_bh); -readdir_out: +out_brelse_dir: affs_brelse(dir_bh); - affs_brelse(fh_bh); + +out_unlock_dir: affs_unlock_dir(inode); - return 0; + return error; } diff --git a/fs/affs/inode.c b/fs/affs/inode.c index 0e092d08680e..96df91e8c334 100644 --- a/fs/affs/inode.c +++ b/fs/affs/inode.c @@ -259,7 +259,7 @@ affs_evict_inode(struct inode *inode) { unsigned long cache_page; pr_debug("AFFS: evict_inode(ino=%lu, nlink=%u)\n", inode->i_ino, inode->i_nlink); - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); if (!inode->i_nlink) { inode->i_size = 0; diff --git a/fs/affs/namei.c b/fs/affs/namei.c index c36cbb4537a2..6dae1ccd176d 100644 --- a/fs/affs/namei.c +++ b/fs/affs/namei.c @@ -60,13 +60,13 @@ affs_get_toupper(struct super_block *sb) * Note: the dentry argument is the parent dentry. */ static inline int -__affs_hash_dentry(struct qstr *qstr, toupper_t toupper) +__affs_hash_dentry(struct qstr *qstr, toupper_t toupper, bool notruncate) { const u8 *name = qstr->name; unsigned long hash; int i; - i = affs_check_name(qstr->name, qstr->len); + i = affs_check_name(qstr->name, qstr->len, notruncate); if (i) return i; @@ -82,16 +82,22 @@ __affs_hash_dentry(struct qstr *qstr, toupper_t toupper) static int affs_hash_dentry(const struct dentry *dentry, struct qstr *qstr) { - return __affs_hash_dentry(qstr, affs_toupper); + return __affs_hash_dentry(qstr, affs_toupper, + affs_nofilenametruncate(dentry)); + } + static int affs_intl_hash_dentry(const struct dentry *dentry, struct qstr *qstr) { - return __affs_hash_dentry(qstr, affs_intl_toupper); + return __affs_hash_dentry(qstr, affs_intl_toupper, + affs_nofilenametruncate(dentry)); + } static inline int __affs_compare_dentry(unsigned int len, - const char *str, const struct qstr *name, toupper_t toupper) + const char *str, const struct qstr *name, toupper_t toupper, + bool notruncate) { const u8 *aname = str; const u8 *bname = name->name; @@ -101,7 +107,7 @@ static inline int __affs_compare_dentry(unsigned int len, * must be valid. 'name' must be validated first. */ - if (affs_check_name(name->name, name->len)) + if (affs_check_name(name->name, name->len, notruncate)) return 1; /* @@ -126,13 +132,18 @@ static int affs_compare_dentry(const struct dentry *parent, const struct dentry *dentry, unsigned int len, const char *str, const struct qstr *name) { - return __affs_compare_dentry(len, str, name, affs_toupper); + + return __affs_compare_dentry(len, str, name, affs_toupper, + affs_nofilenametruncate(parent)); } + static int affs_intl_compare_dentry(const struct dentry *parent, const struct dentry *dentry, unsigned int len, const char *str, const struct qstr *name) { - return __affs_compare_dentry(len, str, name, affs_intl_toupper); + return __affs_compare_dentry(len, str, name, affs_intl_toupper, + affs_nofilenametruncate(parent)); + } /* @@ -411,7 +422,10 @@ affs_rename(struct inode *old_dir, struct dentry *old_dentry, (u32)old_dir->i_ino, (int)old_dentry->d_name.len, old_dentry->d_name.name, (u32)new_dir->i_ino, (int)new_dentry->d_name.len, new_dentry->d_name.name); - retval = affs_check_name(new_dentry->d_name.name,new_dentry->d_name.len); + retval = affs_check_name(new_dentry->d_name.name, + new_dentry->d_name.len, + affs_nofilenametruncate(old_dentry)); + if (retval) return retval; diff --git a/fs/affs/super.c b/fs/affs/super.c index 45161a832bbc..6d589f28bf9b 100644 --- a/fs/affs/super.c +++ b/fs/affs/super.c @@ -49,11 +49,6 @@ affs_put_super(struct super_block *sb) pr_debug("AFFS: put_super()\n"); cancel_delayed_work_sync(&sbi->sb_work); - kfree(sbi->s_prefix); - affs_free_bitmap(sb); - affs_brelse(sbi->s_root_bh); - kfree(sbi); - sb->s_fs_info = NULL; } static int @@ -133,7 +128,7 @@ static void init_once(void *foo) inode_init_once(&ei->vfs_inode); } -static int init_inodecache(void) +static int __init init_inodecache(void) { affs_inode_cachep = kmem_cache_create("affs_inode_cache", sizeof(struct affs_inode_info), @@ -168,7 +163,7 @@ static const struct super_operations affs_sops = { }; enum { - Opt_bs, Opt_mode, Opt_mufs, Opt_prefix, Opt_protect, + Opt_bs, Opt_mode, Opt_mufs, Opt_notruncate, Opt_prefix, Opt_protect, Opt_reserved, Opt_root, Opt_setgid, Opt_setuid, Opt_verbose, Opt_volume, Opt_ignore, Opt_err, }; @@ -177,6 +172,7 @@ static const match_table_t tokens = { {Opt_bs, "bs=%u"}, {Opt_mode, "mode=%o"}, {Opt_mufs, "mufs"}, + {Opt_notruncate, "nofilenametruncate"}, {Opt_prefix, "prefix=%s"}, {Opt_protect, "protect"}, {Opt_reserved, "reserved=%u"}, @@ -238,6 +234,9 @@ parse_options(char *options, kuid_t *uid, kgid_t *gid, int *mode, int *reserved, case Opt_mufs: *mount_opts |= SF_MUFS; break; + case Opt_notruncate: + *mount_opts |= SF_NO_TRUNCATE; + break; case Opt_prefix: *prefix = match_strdup(&args[0]); if (!*prefix) @@ -316,7 +315,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent) unsigned long mount_flags; int tmp_flags; /* fix remount prototype... */ u8 sig[4]; - int ret = -EINVAL; + int ret; save_mount_options(sb, data); @@ -412,17 +411,19 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent) if (!silent) printk(KERN_ERR "AFFS: No valid root block on device %s\n", sb->s_id); - goto out_error; + return -EINVAL; /* N.B. after this point bh must be released */ got_root: + /* Keep super block in cache */ + sbi->s_root_bh = root_bh; root_block = sbi->s_root_block; /* Find out which kind of FS we have */ boot_bh = sb_bread(sb, 0); if (!boot_bh) { printk(KERN_ERR "AFFS: Cannot read boot block\n"); - goto out_error; + return -EINVAL; } memcpy(sig, boot_bh->b_data, 4); brelse(boot_bh); @@ -471,7 +472,7 @@ got_root: default: printk(KERN_ERR "AFFS: Unknown filesystem on device %s: %08X\n", sb->s_id, chksum); - goto out_error; + return -EINVAL; } if (mount_flags & SF_VERBOSE) { @@ -488,22 +489,17 @@ got_root: if (sbi->s_flags & SF_OFS) sbi->s_data_blksize -= 24; - /* Keep super block in cache */ - sbi->s_root_bh = root_bh; - /* N.B. after this point s_root_bh must be released */ - tmp_flags = sb->s_flags; - if (affs_init_bitmap(sb, &tmp_flags)) - goto out_error; + ret = affs_init_bitmap(sb, &tmp_flags); + if (ret) + return ret; sb->s_flags = tmp_flags; /* set up enough so that it can read an inode */ root_inode = affs_iget(sb, root_block); - if (IS_ERR(root_inode)) { - ret = PTR_ERR(root_inode); - goto out_error; - } + if (IS_ERR(root_inode)) + return PTR_ERR(root_inode); if (AFFS_SB(sb)->s_flags & SF_INTL) sb->s_d_op = &affs_intl_dentry_operations; @@ -513,22 +509,11 @@ got_root: sb->s_root = d_make_root(root_inode); if (!sb->s_root) { printk(KERN_ERR "AFFS: Get root inode failed\n"); - goto out_error; + return -ENOMEM; } pr_debug("AFFS: s_flags=%lX\n",sb->s_flags); return 0; - - /* - * Begin the cascaded cleanup ... - */ -out_error: - kfree(sbi->s_bitmap); - affs_brelse(root_bh); - kfree(sbi->s_prefix); - kfree(sbi); - sb->s_fs_info = NULL; - return ret; } static int @@ -549,6 +534,7 @@ affs_remount(struct super_block *sb, int *flags, char *data) pr_debug("AFFS: remount(flags=0x%x,opts=\"%s\")\n",*flags,data); + sync_filesystem(sb); *flags |= MS_NODIRATIME; memcpy(volume, sbi->s_volume, 32); @@ -615,11 +601,23 @@ static struct dentry *affs_mount(struct file_system_type *fs_type, return mount_bdev(fs_type, flags, dev_name, data, affs_fill_super); } +static void affs_kill_sb(struct super_block *sb) +{ + struct affs_sb_info *sbi = AFFS_SB(sb); + kill_block_super(sb); + if (sbi) { + affs_free_bitmap(sb); + affs_brelse(sbi->s_root_bh); + kfree(sbi->s_prefix); + kfree(sbi); + } +} + static struct file_system_type affs_fs_type = { .owner = THIS_MODULE, .name = "affs", .mount = affs_mount, - .kill_sb = kill_block_super, + .kill_sb = affs_kill_sb, .fs_flags = FS_REQUIRES_DEV, }; MODULE_ALIAS_FS("affs"); diff --git a/fs/afs/inode.c b/fs/afs/inode.c index ce25d755b7aa..294671288449 100644 --- a/fs/afs/inode.c +++ b/fs/afs/inode.c @@ -422,7 +422,7 @@ void afs_evict_inode(struct inode *inode) ASSERTCMP(inode->i_ino, ==, vnode->fid.vnode); - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); afs_give_up_callback(vnode); diff --git a/fs/afs/internal.h b/fs/afs/internal.h index a306bb6d88d9..be75b500005d 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -75,6 +75,7 @@ struct afs_call { const struct afs_call_type *type; /* type of call */ const struct afs_wait_mode *wait_mode; /* completion wait mode */ wait_queue_head_t waitq; /* processes awaiting completion */ + work_func_t async_workfn; struct work_struct async_work; /* asynchronous work processor */ struct work_struct work; /* actual work processor */ struct sk_buff_head rx_queue; /* received packets */ @@ -195,7 +196,6 @@ struct afs_cell { struct list_head link; /* main cell list link */ struct key *anonymous_key; /* anonymous user key for this cell */ struct list_head proc_link; /* /proc cell list link */ - struct proc_dir_entry *proc_dir; /* /proc dir for this cell */ #ifdef CONFIG_AFS_FSCACHE struct fscache_cookie *cache; /* caching cookie */ #endif diff --git a/fs/afs/proc.c b/fs/afs/proc.c index 526e4bbbde59..24a905b076fd 100644 --- a/fs/afs/proc.c +++ b/fs/afs/proc.c @@ -41,11 +41,8 @@ static const struct file_operations afs_proc_cells_fops = { .write = afs_proc_cells_write, .llseek = seq_lseek, .release = seq_release, - .owner = THIS_MODULE, }; -static int afs_proc_rootcell_open(struct inode *inode, struct file *file); -static int afs_proc_rootcell_release(struct inode *inode, struct file *file); static ssize_t afs_proc_rootcell_read(struct file *file, char __user *buf, size_t size, loff_t *_pos); static ssize_t afs_proc_rootcell_write(struct file *file, @@ -53,17 +50,12 @@ static ssize_t afs_proc_rootcell_write(struct file *file, size_t size, loff_t *_pos); static const struct file_operations afs_proc_rootcell_fops = { - .open = afs_proc_rootcell_open, .read = afs_proc_rootcell_read, .write = afs_proc_rootcell_write, .llseek = no_llseek, - .release = afs_proc_rootcell_release, - .owner = THIS_MODULE, }; static int afs_proc_cell_volumes_open(struct inode *inode, struct file *file); -static int afs_proc_cell_volumes_release(struct inode *inode, - struct file *file); static void *afs_proc_cell_volumes_start(struct seq_file *p, loff_t *pos); static void *afs_proc_cell_volumes_next(struct seq_file *p, void *v, loff_t *pos); @@ -81,14 +73,11 @@ static const struct file_operations afs_proc_cell_volumes_fops = { .open = afs_proc_cell_volumes_open, .read = seq_read, .llseek = seq_lseek, - .release = afs_proc_cell_volumes_release, - .owner = THIS_MODULE, + .release = seq_release, }; static int afs_proc_cell_vlservers_open(struct inode *inode, struct file *file); -static int afs_proc_cell_vlservers_release(struct inode *inode, - struct file *file); static void *afs_proc_cell_vlservers_start(struct seq_file *p, loff_t *pos); static void *afs_proc_cell_vlservers_next(struct seq_file *p, void *v, loff_t *pos); @@ -106,13 +95,10 @@ static const struct file_operations afs_proc_cell_vlservers_fops = { .open = afs_proc_cell_vlservers_open, .read = seq_read, .llseek = seq_lseek, - .release = afs_proc_cell_vlservers_release, - .owner = THIS_MODULE, + .release = seq_release, }; static int afs_proc_cell_servers_open(struct inode *inode, struct file *file); -static int afs_proc_cell_servers_release(struct inode *inode, - struct file *file); static void *afs_proc_cell_servers_start(struct seq_file *p, loff_t *pos); static void *afs_proc_cell_servers_next(struct seq_file *p, void *v, loff_t *pos); @@ -130,8 +116,7 @@ static const struct file_operations afs_proc_cell_servers_fops = { .open = afs_proc_cell_servers_open, .read = seq_read, .llseek = seq_lseek, - .release = afs_proc_cell_servers_release, - .owner = THIS_MODULE, + .release = seq_release, }; /* @@ -139,29 +124,21 @@ static const struct file_operations afs_proc_cell_servers_fops = { */ int afs_proc_init(void) { - struct proc_dir_entry *p; - _enter(""); proc_afs = proc_mkdir("fs/afs", NULL); if (!proc_afs) goto error_dir; - p = proc_create("cells", 0, proc_afs, &afs_proc_cells_fops); - if (!p) - goto error_cells; - - p = proc_create("rootcell", 0, proc_afs, &afs_proc_rootcell_fops); - if (!p) - goto error_rootcell; + if (!proc_create("cells", 0644, proc_afs, &afs_proc_cells_fops) || + !proc_create("rootcell", 0644, proc_afs, &afs_proc_rootcell_fops)) + goto error_tree; _leave(" = 0"); return 0; -error_rootcell: - remove_proc_entry("cells", proc_afs); -error_cells: - remove_proc_entry("fs/afs", NULL); +error_tree: + remove_proc_subtree("fs/afs", NULL); error_dir: _leave(" = -ENOMEM"); return -ENOMEM; @@ -172,9 +149,7 @@ error_dir: */ void afs_proc_cleanup(void) { - remove_proc_entry("rootcell", proc_afs); - remove_proc_entry("cells", proc_afs); - remove_proc_entry("fs/afs", NULL); + remove_proc_subtree("fs/afs", NULL); } /* @@ -319,19 +294,6 @@ inval: goto done; } -/* - * Stubs for /proc/fs/afs/rootcell - */ -static int afs_proc_rootcell_open(struct inode *inode, struct file *file) -{ - return 0; -} - -static int afs_proc_rootcell_release(struct inode *inode, struct file *file) -{ - return 0; -} - static ssize_t afs_proc_rootcell_read(struct file *file, char __user *buf, size_t size, loff_t *_pos) { @@ -387,38 +349,27 @@ nomem: */ int afs_proc_cell_setup(struct afs_cell *cell) { - struct proc_dir_entry *p; + struct proc_dir_entry *dir; _enter("%p{%s}", cell, cell->name); - cell->proc_dir = proc_mkdir(cell->name, proc_afs); - if (!cell->proc_dir) + dir = proc_mkdir(cell->name, proc_afs); + if (!dir) goto error_dir; - p = proc_create_data("servers", 0, cell->proc_dir, - &afs_proc_cell_servers_fops, cell); - if (!p) - goto error_servers; - - p = proc_create_data("vlservers", 0, cell->proc_dir, - &afs_proc_cell_vlservers_fops, cell); - if (!p) - goto error_vlservers; - - p = proc_create_data("volumes", 0, cell->proc_dir, - &afs_proc_cell_volumes_fops, cell); - if (!p) - goto error_volumes; + if (!proc_create_data("servers", 0, dir, + &afs_proc_cell_servers_fops, cell) || + !proc_create_data("vlservers", 0, dir, + &afs_proc_cell_vlservers_fops, cell) || + !proc_create_data("volumes", 0, dir, + &afs_proc_cell_volumes_fops, cell)) + goto error_tree; _leave(" = 0"); return 0; -error_volumes: - remove_proc_entry("vlservers", cell->proc_dir); -error_vlservers: - remove_proc_entry("servers", cell->proc_dir); -error_servers: - remove_proc_entry(cell->name, proc_afs); +error_tree: + remove_proc_subtree(cell->name, proc_afs); error_dir: _leave(" = -ENOMEM"); return -ENOMEM; @@ -431,10 +382,7 @@ void afs_proc_cell_remove(struct afs_cell *cell) { _enter(""); - remove_proc_entry("volumes", cell->proc_dir); - remove_proc_entry("vlservers", cell->proc_dir); - remove_proc_entry("servers", cell->proc_dir); - remove_proc_entry(cell->name, proc_afs); + remove_proc_subtree(cell->name, proc_afs); _leave(""); } @@ -463,14 +411,6 @@ static int afs_proc_cell_volumes_open(struct inode *inode, struct file *file) } /* - * close the file and release the ref to the cell - */ -static int afs_proc_cell_volumes_release(struct inode *inode, struct file *file) -{ - return seq_release(inode, file); -} - -/* * set up the iterator to start reading from the cells list and return the * first item */ @@ -569,15 +509,6 @@ static int afs_proc_cell_vlservers_open(struct inode *inode, struct file *file) } /* - * close the file and release the ref to the cell - */ -static int afs_proc_cell_vlservers_release(struct inode *inode, - struct file *file) -{ - return seq_release(inode, file); -} - -/* * set up the iterator to start reading from the cells list and return the * first item */ @@ -673,15 +604,6 @@ static int afs_proc_cell_servers_open(struct inode *inode, struct file *file) } /* - * close the file and release the ref to the cell - */ -static int afs_proc_cell_servers_release(struct inode *inode, - struct file *file) -{ - return seq_release(inode, file); -} - -/* * set up the iterator to start reading from the cells list and return the * first item */ diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c index 8ad8c2a0703a..ef943df73b8c 100644 --- a/fs/afs/rxrpc.c +++ b/fs/afs/rxrpc.c @@ -644,7 +644,7 @@ static void afs_process_async_call(struct work_struct *work) /* we can't just delete the call because the work item may be * queued */ - PREPARE_WORK(&call->async_work, afs_delete_async_call); + call->async_workfn = afs_delete_async_call; queue_work(afs_async_calls, &call->async_work); } @@ -663,6 +663,13 @@ void afs_transfer_reply(struct afs_call *call, struct sk_buff *skb) call->reply_size += len; } +static void afs_async_workfn(struct work_struct *work) +{ + struct afs_call *call = container_of(work, struct afs_call, async_work); + + call->async_workfn(work); +} + /* * accept the backlog of incoming calls */ @@ -685,7 +692,8 @@ static void afs_collect_incoming_call(struct work_struct *work) return; } - INIT_WORK(&call->async_work, afs_process_async_call); + call->async_workfn = afs_process_async_call; + INIT_WORK(&call->async_work, afs_async_workfn); call->wait_mode = &afs_async_incoming_call; call->type = &afs_RXCMxxxx; init_waitqueue_head(&call->waitq); diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c index 24084732b1d0..80ef38c73e5a 100644 --- a/fs/anon_inodes.c +++ b/fs/anon_inodes.c @@ -41,19 +41,8 @@ static const struct dentry_operations anon_inodefs_dentry_operations = { static struct dentry *anon_inodefs_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) { - struct dentry *root; - root = mount_pseudo(fs_type, "anon_inode:", NULL, + return mount_pseudo(fs_type, "anon_inode:", NULL, &anon_inodefs_dentry_operations, ANON_INODE_FS_MAGIC); - if (!IS_ERR(root)) { - struct super_block *s = root->d_sb; - anon_inode_inode = alloc_anon_inode(s); - if (IS_ERR(anon_inode_inode)) { - dput(root); - deactivate_locked_super(s); - root = ERR_CAST(anon_inode_inode); - } - } - return root; } static struct file_system_type anon_inode_fs_type = { @@ -175,22 +164,15 @@ EXPORT_SYMBOL_GPL(anon_inode_getfd); static int __init anon_inode_init(void) { - int error; - - error = register_filesystem(&anon_inode_fs_type); - if (error) - goto err_exit; anon_inode_mnt = kern_mount(&anon_inode_fs_type); - if (IS_ERR(anon_inode_mnt)) { - error = PTR_ERR(anon_inode_mnt); - goto err_unregister_filesystem; - } - return 0; + if (IS_ERR(anon_inode_mnt)) + panic("anon_inode_init() kernel mount failed (%ld)\n", PTR_ERR(anon_inode_mnt)); -err_unregister_filesystem: - unregister_filesystem(&anon_inode_fs_type); -err_exit: - panic(KERN_ERR "anon_inode_init() failed (%d)\n", error); + anon_inode_inode = alloc_anon_inode(anon_inode_mnt->mnt_sb); + if (IS_ERR(anon_inode_inode)) + panic("anon_inode_init() inode allocation failed (%ld)\n", PTR_ERR(anon_inode_inode)); + + return 0; } fs_initcall(anon_inode_init); diff --git a/fs/attr.c b/fs/attr.c index 267968d94673..5d4e59d56e85 100644 --- a/fs/attr.c +++ b/fs/attr.c @@ -202,11 +202,6 @@ int notify_change(struct dentry * dentry, struct iattr * attr, struct inode **de return -EPERM; } - if ((ia_valid & ATTR_SIZE) && IS_I_VERSION(inode)) { - if (attr->ia_size != inode->i_size) - inode_inc_iversion(inode); - } - if ((ia_valid & ATTR_MODE)) { umode_t amode = attr->ia_mode; /* Flag setting protected by i_mutex */ diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h index 4218e26df916..acf32054edd8 100644 --- a/fs/autofs4/autofs_i.h +++ b/fs/autofs4/autofs_i.h @@ -104,7 +104,7 @@ struct autofs_sb_info { u32 magic; int pipefd; struct file *pipe; - pid_t oz_pgrp; + struct pid *oz_pgrp; int catatonic; int version; int sub_version; @@ -140,7 +140,7 @@ static inline struct autofs_info *autofs4_dentry_ino(struct dentry *dentry) filesystem without "magic".) */ static inline int autofs4_oz_mode(struct autofs_sb_info *sbi) { - return sbi->catatonic || task_pgrp_nr(current) == sbi->oz_pgrp; + return sbi->catatonic || task_pgrp(current) == sbi->oz_pgrp; } /* Does a dentry have some pending activity? */ diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c index 1818ce7f5a06..232e03d4780d 100644 --- a/fs/autofs4/dev-ioctl.c +++ b/fs/autofs4/dev-ioctl.c @@ -103,6 +103,9 @@ static struct autofs_dev_ioctl *copy_dev_ioctl(struct autofs_dev_ioctl __user *i if (tmp.size < sizeof(tmp)) return ERR_PTR(-EINVAL); + if (tmp.size > (PATH_MAX + sizeof(tmp))) + return ERR_PTR(-ENAMETOOLONG); + return memdup_user(in, tmp.size); } @@ -346,6 +349,7 @@ static int autofs_dev_ioctl_setpipefd(struct file *fp, { int pipefd; int err = 0; + struct pid *new_pid = NULL; if (param->setpipefd.pipefd == -1) return -EINVAL; @@ -357,7 +361,17 @@ static int autofs_dev_ioctl_setpipefd(struct file *fp, mutex_unlock(&sbi->wq_mutex); return -EBUSY; } else { - struct file *pipe = fget(pipefd); + struct file *pipe; + + new_pid = get_task_pid(current, PIDTYPE_PGID); + + if (ns_of_pid(new_pid) != ns_of_pid(sbi->oz_pgrp)) { + AUTOFS_WARN("Not allowed to change PID namespace"); + err = -EINVAL; + goto out; + } + + pipe = fget(pipefd); if (!pipe) { err = -EBADF; goto out; @@ -367,12 +381,13 @@ static int autofs_dev_ioctl_setpipefd(struct file *fp, fput(pipe); goto out; } - sbi->oz_pgrp = task_pgrp_nr(current); + swap(sbi->oz_pgrp, new_pid); sbi->pipefd = pipefd; sbi->pipe = pipe; sbi->catatonic = 0; } out: + put_pid(new_pid); mutex_unlock(&sbi->wq_mutex); return err; } diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c index 3d9d3f5d5dda..394e90b02c5e 100644 --- a/fs/autofs4/expire.c +++ b/fs/autofs4/expire.c @@ -402,6 +402,20 @@ struct dentry *autofs4_expire_indirect(struct super_block *sb, goto next; } + if (dentry->d_inode && S_ISLNK(dentry->d_inode->i_mode)) { + DPRINTK("checking symlink %p %.*s", + dentry, (int)dentry->d_name.len, dentry->d_name.name); + /* + * A symlink can't be "busy" in the usual sense so + * just check last used for expire timeout. + */ + if (autofs4_can_expire(dentry, timeout, do_now)) { + expired = dentry; + goto found; + } + goto next; + } + if (simple_empty(dentry)) goto next; diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c index 3b9cc9b973c2..d7bd395ab586 100644 --- a/fs/autofs4/inode.c +++ b/fs/autofs4/inode.c @@ -56,8 +56,11 @@ void autofs4_kill_sb(struct super_block *sb) * just call kill_anon_super when we are called from * deactivate_super. */ - if (sbi) /* Free wait queues, close pipe */ + if (sbi) { + /* Free wait queues, close pipe */ autofs4_catatonic_mode(sbi); + put_pid(sbi->oz_pgrp); + } DPRINTK("shutting down"); kill_litter_super(sb); @@ -80,7 +83,7 @@ static int autofs4_show_options(struct seq_file *m, struct dentry *root) if (!gid_eq(root_inode->i_gid, GLOBAL_ROOT_GID)) seq_printf(m, ",gid=%u", from_kgid_munged(&init_user_ns, root_inode->i_gid)); - seq_printf(m, ",pgrp=%d", sbi->oz_pgrp); + seq_printf(m, ",pgrp=%d", pid_vnr(sbi->oz_pgrp)); seq_printf(m, ",timeout=%lu", sbi->exp_timeout/HZ); seq_printf(m, ",minproto=%d", sbi->min_proto); seq_printf(m, ",maxproto=%d", sbi->max_proto); @@ -124,7 +127,8 @@ static const match_table_t tokens = { }; static int parse_options(char *options, int *pipefd, kuid_t *uid, kgid_t *gid, - pid_t *pgrp, unsigned int *type, int *minproto, int *maxproto) + int *pgrp, bool *pgrp_set, unsigned int *type, + int *minproto, int *maxproto) { char *p; substring_t args[MAX_OPT_ARGS]; @@ -132,7 +136,6 @@ static int parse_options(char *options, int *pipefd, kuid_t *uid, kgid_t *gid, *uid = current_uid(); *gid = current_gid(); - *pgrp = task_pgrp_nr(current); *minproto = AUTOFS_MIN_PROTO_VERSION; *maxproto = AUTOFS_MAX_PROTO_VERSION; @@ -171,6 +174,7 @@ static int parse_options(char *options, int *pipefd, kuid_t *uid, kgid_t *gid, if (match_int(args, &option)) return 1; *pgrp = option; + *pgrp_set = true; break; case Opt_minproto: if (match_int(args, &option)) @@ -206,10 +210,13 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent) int pipefd; struct autofs_sb_info *sbi; struct autofs_info *ino; + int pgrp; + bool pgrp_set = false; + int ret = -EINVAL; sbi = kzalloc(sizeof(*sbi), GFP_KERNEL); if (!sbi) - goto fail_unlock; + return -ENOMEM; DPRINTK("starting up, sbi = %p",sbi); s->s_fs_info = sbi; @@ -218,7 +225,7 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent) sbi->pipe = NULL; sbi->catatonic = 1; sbi->exp_timeout = 0; - sbi->oz_pgrp = task_pgrp_nr(current); + sbi->oz_pgrp = NULL; sbi->sb = s; sbi->version = 0; sbi->sub_version = 0; @@ -243,8 +250,10 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent) * Get the root inode and dentry, but defer checking for errors. */ ino = autofs4_new_ino(sbi); - if (!ino) + if (!ino) { + ret = -ENOMEM; goto fail_free; + } root_inode = autofs4_get_inode(s, S_IFDIR | 0755); root = d_make_root(root_inode); if (!root) @@ -255,12 +264,23 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent) /* Can this call block? */ if (parse_options(data, &pipefd, &root_inode->i_uid, &root_inode->i_gid, - &sbi->oz_pgrp, &sbi->type, &sbi->min_proto, - &sbi->max_proto)) { + &pgrp, &pgrp_set, &sbi->type, &sbi->min_proto, + &sbi->max_proto)) { printk("autofs: called with bogus options\n"); goto fail_dput; } + if (pgrp_set) { + sbi->oz_pgrp = find_get_pid(pgrp); + if (!sbi->oz_pgrp) { + pr_warn("autofs: could not find process group %d\n", + pgrp); + goto fail_dput; + } + } else { + sbi->oz_pgrp = get_task_pid(current, PIDTYPE_PGID); + } + if (autofs_type_trigger(sbi->type)) __managed_dentry_set_managed(root); @@ -284,14 +304,15 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent) sbi->version = sbi->max_proto; sbi->sub_version = AUTOFS_PROTO_SUBVERSION; - DPRINTK("pipe fd = %d, pgrp = %u", pipefd, sbi->oz_pgrp); + DPRINTK("pipe fd = %d, pgrp = %u", pipefd, pid_nr(sbi->oz_pgrp)); pipe = fget(pipefd); - + if (!pipe) { printk("autofs: could not open pipe file descriptor\n"); goto fail_dput; } - if (autofs_prepare_pipe(pipe) < 0) + ret = autofs_prepare_pipe(pipe); + if (ret < 0) goto fail_fput; sbi->pipe = pipe; sbi->pipefd = pipefd; @@ -316,10 +337,10 @@ fail_dput: fail_ino: kfree(ino); fail_free: + put_pid(sbi->oz_pgrp); kfree(sbi); s->s_fs_info = NULL; -fail_unlock: - return -EINVAL; + return ret; } struct inode *autofs4_get_inode(struct super_block *sb, umode_t mode) diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c index 92ef341ba0cf..2caf36ac3e93 100644 --- a/fs/autofs4/root.c +++ b/fs/autofs4/root.c @@ -558,7 +558,7 @@ static int autofs4_dir_symlink(struct inode *dir, dget(dentry); atomic_inc(&ino->count); p_ino = autofs4_dentry_ino(dentry->d_parent); - if (p_ino && dentry->d_parent != dentry) + if (p_ino && !IS_ROOT(dentry)) atomic_inc(&p_ino->count); dir->i_mtime = CURRENT_TIME; @@ -593,7 +593,7 @@ static int autofs4_dir_unlink(struct inode *dir, struct dentry *dentry) if (atomic_dec_and_test(&ino->count)) { p_ino = autofs4_dentry_ino(dentry->d_parent); - if (p_ino && dentry->d_parent != dentry) + if (p_ino && !IS_ROOT(dentry)) atomic_dec(&p_ino->count); } dput(ino->dentry); @@ -732,7 +732,7 @@ static int autofs4_dir_mkdir(struct inode *dir, struct dentry *dentry, umode_t m dget(dentry); atomic_inc(&ino->count); p_ino = autofs4_dentry_ino(dentry->d_parent); - if (p_ino && dentry->d_parent != dentry) + if (p_ino && !IS_ROOT(dentry)) atomic_inc(&p_ino->count); inc_nlink(dir); dir->i_mtime = CURRENT_TIME; diff --git a/fs/autofs4/symlink.c b/fs/autofs4/symlink.c index f27c094a1919..1e8ea192be2b 100644 --- a/fs/autofs4/symlink.c +++ b/fs/autofs4/symlink.c @@ -14,6 +14,10 @@ static void *autofs4_follow_link(struct dentry *dentry, struct nameidata *nd) { + struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb); + struct autofs_info *ino = autofs4_dentry_ino(dentry); + if (ino && !autofs4_oz_mode(sbi)) + ino->last_used = jiffies; nd_set_link(nd, dentry->d_inode->i_private); return NULL; } diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c index 689e40d983ad..116fd38ee472 100644 --- a/fs/autofs4/waitq.c +++ b/fs/autofs4/waitq.c @@ -347,11 +347,23 @@ int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry, struct qstr qstr; char *name; int status, ret, type; + pid_t pid; + pid_t tgid; /* In catatonic mode, we don't wait for nobody */ if (sbi->catatonic) return -ENOENT; + /* + * Try translating pids to the namespace of the daemon. + * + * Zero means failure: we are in an unrelated pid namespace. + */ + pid = task_pid_nr_ns(current, ns_of_pid(sbi->oz_pgrp)); + tgid = task_tgid_nr_ns(current, ns_of_pid(sbi->oz_pgrp)); + if (pid == 0 || tgid == 0) + return -ENOENT; + if (!dentry->d_inode) { /* * A wait for a negative dentry is invalid for certain @@ -417,8 +429,8 @@ int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry, wq->ino = autofs4_get_ino(sbi); wq->uid = current_uid(); wq->gid = current_gid(); - wq->pid = current->pid; - wq->tgid = current->tgid; + wq->pid = pid; + wq->tgid = tgid; wq->status = -EINTR; /* Status return if interrupted */ wq->wait_ctr = 2; diff --git a/fs/befs/Makefile b/fs/befs/Makefile index 2f370bd7a50d..8b9f66642a83 100644 --- a/fs/befs/Makefile +++ b/fs/befs/Makefile @@ -3,5 +3,5 @@ # obj-$(CONFIG_BEFS_FS) += befs.o - +ccflags-$(CONFIG_BEFS_DEBUG) += -DDEBUG befs-objs := datastream.o btree.o super.o inode.o debug.o io.o linuxvfs.o diff --git a/fs/befs/befs.h b/fs/befs/befs.h index b26642839156..3a7813ab8c95 100644 --- a/fs/befs/befs.h +++ b/fs/befs/befs.h @@ -88,8 +88,11 @@ enum befs_err { /****************************/ /* debug.c */ +__printf(2, 3) void befs_error(const struct super_block *sb, const char *fmt, ...); +__printf(2, 3) void befs_warning(const struct super_block *sb, const char *fmt, ...); +__printf(2, 3) void befs_debug(const struct super_block *sb, const char *fmt, ...); void befs_dump_super_block(const struct super_block *sb, befs_super_block *); diff --git a/fs/befs/btree.c b/fs/befs/btree.c index 74e397db0b8b..a2cd305a993a 100644 --- a/fs/befs/btree.c +++ b/fs/befs/btree.c @@ -137,7 +137,7 @@ befs_bt_read_super(struct super_block *sb, befs_data_stream * ds, struct buffer_head *bh = NULL; befs_disk_btree_super *od_sup = NULL; - befs_debug(sb, "---> befs_btree_read_super()"); + befs_debug(sb, "---> %s", __func__); bh = befs_read_datastream(sb, ds, 0, NULL); @@ -162,11 +162,11 @@ befs_bt_read_super(struct super_block *sb, befs_data_stream * ds, goto error; } - befs_debug(sb, "<--- befs_btree_read_super()"); + befs_debug(sb, "<--- %s", __func__); return BEFS_OK; error: - befs_debug(sb, "<--- befs_btree_read_super() ERROR"); + befs_debug(sb, "<--- %s ERROR", __func__); return BEFS_ERR; } @@ -195,16 +195,16 @@ befs_bt_read_node(struct super_block *sb, befs_data_stream * ds, { uint off = 0; - befs_debug(sb, "---> befs_bt_read_node()"); + befs_debug(sb, "---> %s", __func__); if (node->bh) brelse(node->bh); node->bh = befs_read_datastream(sb, ds, node_off, &off); if (!node->bh) { - befs_error(sb, "befs_bt_read_node() failed to read " - "node at %Lu", node_off); - befs_debug(sb, "<--- befs_bt_read_node() ERROR"); + befs_error(sb, "%s failed to read " + "node at %llu", __func__, node_off); + befs_debug(sb, "<--- %s ERROR", __func__); return BEFS_ERR; } @@ -221,7 +221,7 @@ befs_bt_read_node(struct super_block *sb, befs_data_stream * ds, node->head.all_key_length = fs16_to_cpu(sb, node->od_node->all_key_length); - befs_debug(sb, "<--- befs_btree_read_node()"); + befs_debug(sb, "<--- %s", __func__); return BEFS_OK; } @@ -252,7 +252,7 @@ befs_btree_find(struct super_block *sb, befs_data_stream * ds, befs_off_t node_off; int res; - befs_debug(sb, "---> befs_btree_find() Key: %s", key); + befs_debug(sb, "---> %s Key: %s", __func__, key); if (befs_bt_read_super(sb, ds, &bt_super) != BEFS_OK) { befs_error(sb, @@ -263,7 +263,7 @@ befs_btree_find(struct super_block *sb, befs_data_stream * ds, this_node = kmalloc(sizeof (befs_btree_node), GFP_NOFS); if (!this_node) { - befs_error(sb, "befs_btree_find() failed to allocate %u " + befs_error(sb, "befs_btree_find() failed to allocate %zu " "bytes of memory", sizeof (befs_btree_node)); goto error; } @@ -274,7 +274,7 @@ befs_btree_find(struct super_block *sb, befs_data_stream * ds, node_off = bt_super.root_node_ptr; if (befs_bt_read_node(sb, ds, this_node, node_off) != BEFS_OK) { befs_error(sb, "befs_btree_find() failed to read " - "node at %Lu", node_off); + "node at %llu", node_off); goto error_alloc; } @@ -285,7 +285,7 @@ befs_btree_find(struct super_block *sb, befs_data_stream * ds, /* if no match, go to overflow node */ if (befs_bt_read_node(sb, ds, this_node, node_off) != BEFS_OK) { befs_error(sb, "befs_btree_find() failed to read " - "node at %Lu", node_off); + "node at %llu", node_off); goto error_alloc; } } @@ -298,11 +298,11 @@ befs_btree_find(struct super_block *sb, befs_data_stream * ds, kfree(this_node); if (res != BEFS_BT_MATCH) { - befs_debug(sb, "<--- befs_btree_find() Key %s not found", key); + befs_debug(sb, "<--- %s Key %s not found", __func__, key); *value = 0; return BEFS_BT_NOT_FOUND; } - befs_debug(sb, "<--- befs_btree_find() Found key %s, value %Lu", + befs_debug(sb, "<--- %s Found key %s, value %llu", __func__, key, *value); return BEFS_OK; @@ -310,7 +310,7 @@ befs_btree_find(struct super_block *sb, befs_data_stream * ds, kfree(this_node); error: *value = 0; - befs_debug(sb, "<--- befs_btree_find() ERROR"); + befs_debug(sb, "<--- %s ERROR", __func__); return BEFS_ERR; } @@ -343,7 +343,7 @@ befs_find_key(struct super_block *sb, befs_btree_node * node, char *thiskey; fs64 *valarray; - befs_debug(sb, "---> befs_find_key() %s", findkey); + befs_debug(sb, "---> %s %s", __func__, findkey); *value = 0; @@ -355,7 +355,7 @@ befs_find_key(struct super_block *sb, befs_btree_node * node, eq = befs_compare_strings(thiskey, keylen, findkey, findkey_len); if (eq < 0) { - befs_debug(sb, "<--- befs_find_key() %s not found", findkey); + befs_debug(sb, "<--- %s %s not found", __func__, findkey); return BEFS_BT_NOT_FOUND; } @@ -373,8 +373,8 @@ befs_find_key(struct super_block *sb, befs_btree_node * node, findkey_len); if (eq == 0) { - befs_debug(sb, "<--- befs_find_key() found %s at %d", - thiskey, mid); + befs_debug(sb, "<--- %s found %s at %d", + __func__, thiskey, mid); *value = fs64_to_cpu(sb, valarray[mid]); return BEFS_BT_MATCH; @@ -388,7 +388,7 @@ befs_find_key(struct super_block *sb, befs_btree_node * node, *value = fs64_to_cpu(sb, valarray[mid + 1]); else *value = fs64_to_cpu(sb, valarray[mid]); - befs_debug(sb, "<--- befs_find_key() found %s at %d", thiskey, mid); + befs_debug(sb, "<--- %s found %s at %d", __func__, thiskey, mid); return BEFS_BT_PARMATCH; } @@ -428,7 +428,7 @@ befs_btree_read(struct super_block *sb, befs_data_stream * ds, uint key_sum = 0; - befs_debug(sb, "---> befs_btree_read()"); + befs_debug(sb, "---> %s", __func__); if (befs_bt_read_super(sb, ds, &bt_super) != BEFS_OK) { befs_error(sb, @@ -437,7 +437,7 @@ befs_btree_read(struct super_block *sb, befs_data_stream * ds, } if ((this_node = kmalloc(sizeof (befs_btree_node), GFP_NOFS)) == NULL) { - befs_error(sb, "befs_btree_read() failed to allocate %u " + befs_error(sb, "befs_btree_read() failed to allocate %zu " "bytes of memory", sizeof (befs_btree_node)); goto error; } @@ -452,7 +452,7 @@ befs_btree_read(struct super_block *sb, befs_data_stream * ds, kfree(this_node); *value = 0; *keysize = 0; - befs_debug(sb, "<--- befs_btree_read() Tree is EMPTY"); + befs_debug(sb, "<--- %s Tree is EMPTY", __func__); return BEFS_BT_EMPTY; } else if (res == BEFS_ERR) { goto error_alloc; @@ -467,7 +467,8 @@ befs_btree_read(struct super_block *sb, befs_data_stream * ds, *keysize = 0; *value = 0; befs_debug(sb, - "<--- befs_btree_read() END of keys at %Lu", + "<--- %s END of keys at %llu", __func__, + (unsigned long long) key_sum + this_node->head.all_key_count); brelse(this_node->bh); kfree(this_node); @@ -478,8 +479,8 @@ befs_btree_read(struct super_block *sb, befs_data_stream * ds, node_off = this_node->head.right; if (befs_bt_read_node(sb, ds, this_node, node_off) != BEFS_OK) { - befs_error(sb, "befs_btree_read() failed to read " - "node at %Lu", node_off); + befs_error(sb, "%s failed to read node at %llu", + __func__, (unsigned long long)node_off); goto error_alloc; } } @@ -492,11 +493,13 @@ befs_btree_read(struct super_block *sb, befs_data_stream * ds, keystart = befs_bt_get_key(sb, this_node, cur_key, &keylen); - befs_debug(sb, "Read [%Lu,%d]: keysize %d", node_off, cur_key, keylen); + befs_debug(sb, "Read [%llu,%d]: keysize %d", + (long long unsigned int)node_off, (int)cur_key, + (int)keylen); if (bufsize < keylen + 1) { - befs_error(sb, "befs_btree_read() keybuf too small (%u) " - "for key of size %d", bufsize, keylen); + befs_error(sb, "%s keybuf too small (%zu) " + "for key of size %d", __func__, bufsize, keylen); brelse(this_node->bh); goto error_alloc; }; @@ -506,13 +509,13 @@ befs_btree_read(struct super_block *sb, befs_data_stream * ds, *keysize = keylen; keybuf[keylen] = '\0'; - befs_debug(sb, "Read [%Lu,%d]: Key \"%.*s\", Value %Lu", node_off, + befs_debug(sb, "Read [%llu,%d]: Key \"%.*s\", Value %llu", node_off, cur_key, keylen, keybuf, *value); brelse(this_node->bh); kfree(this_node); - befs_debug(sb, "<--- befs_btree_read()"); + befs_debug(sb, "<--- %s", __func__); return BEFS_OK; @@ -522,7 +525,7 @@ befs_btree_read(struct super_block *sb, befs_data_stream * ds, error: *keysize = 0; *value = 0; - befs_debug(sb, "<--- befs_btree_read() ERROR"); + befs_debug(sb, "<--- %s ERROR", __func__); return BEFS_ERR; } @@ -547,26 +550,26 @@ befs_btree_seekleaf(struct super_block *sb, befs_data_stream * ds, befs_off_t * node_off) { - befs_debug(sb, "---> befs_btree_seekleaf()"); + befs_debug(sb, "---> %s", __func__); if (befs_bt_read_node(sb, ds, this_node, *node_off) != BEFS_OK) { - befs_error(sb, "befs_btree_seekleaf() failed to read " - "node at %Lu", *node_off); + befs_error(sb, "%s failed to read " + "node at %llu", __func__, *node_off); goto error; } - befs_debug(sb, "Seekleaf to root node %Lu", *node_off); + befs_debug(sb, "Seekleaf to root node %llu", *node_off); if (this_node->head.all_key_count == 0 && befs_leafnode(this_node)) { - befs_debug(sb, "<--- befs_btree_seekleaf() Tree is EMPTY"); + befs_debug(sb, "<--- %s Tree is EMPTY", __func__); return BEFS_BT_EMPTY; } while (!befs_leafnode(this_node)) { if (this_node->head.all_key_count == 0) { - befs_debug(sb, "befs_btree_seekleaf() encountered " - "an empty interior node: %Lu. Using Overflow " - "node: %Lu", *node_off, + befs_debug(sb, "%s encountered " + "an empty interior node: %llu. Using Overflow " + "node: %llu", __func__, *node_off, this_node->head.overflow); *node_off = this_node->head.overflow; } else { @@ -574,19 +577,19 @@ befs_btree_seekleaf(struct super_block *sb, befs_data_stream * ds, *node_off = fs64_to_cpu(sb, valarray[0]); } if (befs_bt_read_node(sb, ds, this_node, *node_off) != BEFS_OK) { - befs_error(sb, "befs_btree_seekleaf() failed to read " - "node at %Lu", *node_off); + befs_error(sb, "%s failed to read " + "node at %llu", __func__, *node_off); goto error; } - befs_debug(sb, "Seekleaf to child node %Lu", *node_off); + befs_debug(sb, "Seekleaf to child node %llu", *node_off); } - befs_debug(sb, "Node %Lu is a leaf node", *node_off); + befs_debug(sb, "Node %llu is a leaf node", *node_off); return BEFS_OK; error: - befs_debug(sb, "<--- befs_btree_seekleaf() ERROR"); + befs_debug(sb, "<--- %s ERROR", __func__); return BEFS_ERR; } diff --git a/fs/befs/datastream.c b/fs/befs/datastream.c index 59096b5e0fc7..c467bebd50af 100644 --- a/fs/befs/datastream.c +++ b/fs/befs/datastream.c @@ -52,26 +52,25 @@ befs_read_datastream(struct super_block *sb, befs_data_stream * ds, befs_block_run run; befs_blocknr_t block; /* block coresponding to pos */ - befs_debug(sb, "---> befs_read_datastream() %Lu", pos); + befs_debug(sb, "---> %s %llu", __func__, pos); block = pos >> BEFS_SB(sb)->block_shift; if (off) *off = pos - (block << BEFS_SB(sb)->block_shift); if (befs_fblock2brun(sb, ds, block, &run) != BEFS_OK) { befs_error(sb, "BeFS: Error finding disk addr of block %lu", - block); - befs_debug(sb, "<--- befs_read_datastream() ERROR"); + (unsigned long)block); + befs_debug(sb, "<--- %s ERROR", __func__); return NULL; } bh = befs_bread_iaddr(sb, run); if (!bh) { befs_error(sb, "BeFS: Error reading block %lu from datastream", - block); + (unsigned long)block); return NULL; } - befs_debug(sb, "<--- befs_read_datastream() read data, starting at %Lu", - pos); + befs_debug(sb, "<--- %s read data, starting at %llu", __func__, pos); return bh; } @@ -106,7 +105,8 @@ befs_fblock2brun(struct super_block *sb, befs_data_stream * data, } else { befs_error(sb, "befs_fblock2brun() was asked to find block %lu, " - "which is not mapped by the datastream\n", fblock); + "which is not mapped by the datastream\n", + (unsigned long)fblock); err = BEFS_ERR; } return err; @@ -128,14 +128,14 @@ befs_read_lsymlink(struct super_block * sb, befs_data_stream * ds, void *buff, befs_off_t bytes_read = 0; /* bytes readed */ u16 plen; struct buffer_head *bh = NULL; - befs_debug(sb, "---> befs_read_lsymlink() length: %Lu", len); + befs_debug(sb, "---> %s length: %llu", __func__, len); while (bytes_read < len) { bh = befs_read_datastream(sb, ds, bytes_read, NULL); if (!bh) { befs_error(sb, "BeFS: Error reading datastream block " - "starting from %Lu", bytes_read); - befs_debug(sb, "<--- befs_read_lsymlink() ERROR"); + "starting from %llu", bytes_read); + befs_debug(sb, "<--- %s ERROR", __func__); return bytes_read; } @@ -146,7 +146,8 @@ befs_read_lsymlink(struct super_block * sb, befs_data_stream * ds, void *buff, bytes_read += plen; } - befs_debug(sb, "<--- befs_read_lsymlink() read %u bytes", bytes_read); + befs_debug(sb, "<--- %s read %u bytes", __func__, (unsigned int) + bytes_read); return bytes_read; } @@ -169,7 +170,7 @@ befs_count_blocks(struct super_block * sb, befs_data_stream * ds) befs_blocknr_t metablocks; /* FS metadata blocks */ befs_sb_info *befs_sb = BEFS_SB(sb); - befs_debug(sb, "---> befs_count_blocks()"); + befs_debug(sb, "---> %s", __func__); datablocks = ds->size >> befs_sb->block_shift; if (ds->size & (befs_sb->block_size - 1)) @@ -206,7 +207,7 @@ befs_count_blocks(struct super_block * sb, befs_data_stream * ds) } blocks = datablocks + metablocks; - befs_debug(sb, "<--- befs_count_blocks() %u blocks", blocks); + befs_debug(sb, "<--- %s %u blocks", __func__, (unsigned int)blocks); return blocks; } @@ -251,11 +252,11 @@ befs_find_brun_direct(struct super_block *sb, befs_data_stream * data, befs_blocknr_t max_block = data->max_direct_range >> BEFS_SB(sb)->block_shift; - befs_debug(sb, "---> befs_find_brun_direct(), find %lu", blockno); + befs_debug(sb, "---> %s, find %lu", __func__, (unsigned long)blockno); if (blockno > max_block) { - befs_error(sb, "befs_find_brun_direct() passed block outside of" - "direct region"); + befs_error(sb, "%s passed block outside of direct region", + __func__); return BEFS_ERR; } @@ -267,13 +268,14 @@ befs_find_brun_direct(struct super_block *sb, befs_data_stream * data, run->start = array[i].start + offset; run->len = array[i].len - offset; - befs_debug(sb, "---> befs_find_brun_direct(), " - "found %lu at direct[%d]", blockno, i); + befs_debug(sb, "---> %s, " + "found %lu at direct[%d]", __func__, + (unsigned long)blockno, i); return BEFS_OK; } } - befs_debug(sb, "---> befs_find_brun_direct() ERROR"); + befs_debug(sb, "---> %s ERROR", __func__); return BEFS_ERR; } @@ -316,7 +318,7 @@ befs_find_brun_indirect(struct super_block *sb, befs_blocknr_t indirblockno = iaddr2blockno(sb, &indirect); int arraylen = befs_iaddrs_per_block(sb); - befs_debug(sb, "---> befs_find_brun_indirect(), find %lu", blockno); + befs_debug(sb, "---> %s, find %lu", __func__, (unsigned long)blockno); indir_start_blk = data->max_direct_range >> BEFS_SB(sb)->block_shift; search_blk = blockno - indir_start_blk; @@ -325,10 +327,9 @@ befs_find_brun_indirect(struct super_block *sb, for (i = 0; i < indirect.len; i++) { indirblock = befs_bread(sb, indirblockno + i); if (indirblock == NULL) { - befs_debug(sb, - "---> befs_find_brun_indirect() failed to " - "read disk block %lu from the indirect brun", - indirblockno + i); + befs_debug(sb, "---> %s failed to read " + "disk block %lu from the indirect brun", + __func__, (unsigned long)indirblockno + i); return BEFS_ERR; } @@ -348,9 +349,10 @@ befs_find_brun_indirect(struct super_block *sb, brelse(indirblock); befs_debug(sb, - "<--- befs_find_brun_indirect() found " - "file block %lu at indirect[%d]", - blockno, j + (i * arraylen)); + "<--- %s found file block " + "%lu at indirect[%d]", __func__, + (unsigned long)blockno, + j + (i * arraylen)); return BEFS_OK; } sum += len; @@ -360,10 +362,10 @@ befs_find_brun_indirect(struct super_block *sb, } /* Only fallthrough is an error */ - befs_error(sb, "BeFS: befs_find_brun_indirect() failed to find " - "file block %lu", blockno); + befs_error(sb, "BeFS: %s failed to find " + "file block %lu", __func__, (unsigned long)blockno); - befs_debug(sb, "<--- befs_find_brun_indirect() ERROR"); + befs_debug(sb, "<--- %s ERROR", __func__); return BEFS_ERR; } @@ -444,7 +446,7 @@ befs_find_brun_dblindirect(struct super_block *sb, size_t diblklen = iblklen * befs_iaddrs_per_block(sb) * BEFS_DBLINDIR_BRUN_LEN; - befs_debug(sb, "---> befs_find_brun_dblindirect() find %lu", blockno); + befs_debug(sb, "---> %s find %lu", __func__, (unsigned long)blockno); /* First, discover which of the double_indir->indir blocks * contains pos. Then figure out how much of pos that @@ -460,8 +462,9 @@ befs_find_brun_dblindirect(struct super_block *sb, dbl_which_block = dblindir_indx / befs_iaddrs_per_block(sb); if (dbl_which_block > data->double_indirect.len) { befs_error(sb, "The double-indirect index calculated by " - "befs_read_brun_dblindirect(), %d, is outside the range " - "of the double-indirect block", dblindir_indx); + "%s, %d, is outside the range " + "of the double-indirect block", __func__, + dblindir_indx); return BEFS_ERR; } @@ -469,10 +472,10 @@ befs_find_brun_dblindirect(struct super_block *sb, befs_bread(sb, iaddr2blockno(sb, &data->double_indirect) + dbl_which_block); if (dbl_indir_block == NULL) { - befs_error(sb, "befs_read_brun_dblindirect() couldn't read the " - "double-indirect block at blockno %lu", - iaddr2blockno(sb, - &data->double_indirect) + + befs_error(sb, "%s couldn't read the " + "double-indirect block at blockno %lu", __func__, + (unsigned long) + iaddr2blockno(sb, &data->double_indirect) + dbl_which_block); brelse(dbl_indir_block); return BEFS_ERR; @@ -489,16 +492,16 @@ befs_find_brun_dblindirect(struct super_block *sb, which_block = indir_indx / befs_iaddrs_per_block(sb); if (which_block > indir_run.len) { befs_error(sb, "The indirect index calculated by " - "befs_read_brun_dblindirect(), %d, is outside the range " - "of the indirect block", indir_indx); + "%s, %d, is outside the range " + "of the indirect block", __func__, indir_indx); return BEFS_ERR; } indir_block = befs_bread(sb, iaddr2blockno(sb, &indir_run) + which_block); if (indir_block == NULL) { - befs_error(sb, "befs_read_brun_dblindirect() couldn't read the " - "indirect block at blockno %lu", + befs_error(sb, "%s couldn't read the indirect block " + "at blockno %lu", __func__, (unsigned long) iaddr2blockno(sb, &indir_run) + which_block); brelse(indir_block); return BEFS_ERR; @@ -519,7 +522,7 @@ befs_find_brun_dblindirect(struct super_block *sb, run->len -= offset; befs_debug(sb, "Found file block %lu in double_indirect[%d][%d]," - " double_indirect_leftover = %lu", + " double_indirect_leftover = %lu", (unsigned long) blockno, dblindir_indx, indir_indx, dblindir_leftover); return BEFS_OK; diff --git a/fs/befs/debug.c b/fs/befs/debug.c index 622e73775c83..4de7cffcd662 100644 --- a/fs/befs/debug.c +++ b/fs/befs/debug.c @@ -10,6 +10,7 @@ * debug functions */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #ifdef __KERNEL__ #include <stdarg.h> @@ -23,43 +24,30 @@ #include "befs.h" -#define ERRBUFSIZE 1024 - void befs_error(const struct super_block *sb, const char *fmt, ...) { + struct va_format vaf; va_list args; - char *err_buf = kmalloc(ERRBUFSIZE, GFP_KERNEL); - if (err_buf == NULL) { - printk(KERN_ERR "could not allocate %d bytes\n", ERRBUFSIZE); - return; - } va_start(args, fmt); - vsnprintf(err_buf, ERRBUFSIZE, fmt, args); + vaf.fmt = fmt; + vaf.va = &args; + pr_err("(%s): %pV\n", sb->s_id, &vaf); va_end(args); - - printk(KERN_ERR "BeFS(%s): %s\n", sb->s_id, err_buf); - kfree(err_buf); } void befs_warning(const struct super_block *sb, const char *fmt, ...) { + struct va_format vaf; va_list args; - char *err_buf = kmalloc(ERRBUFSIZE, GFP_KERNEL); - if (err_buf == NULL) { - printk(KERN_ERR "could not allocate %d bytes\n", ERRBUFSIZE); - return; - } va_start(args, fmt); - vsnprintf(err_buf, ERRBUFSIZE, fmt, args); + vaf.fmt = fmt; + vaf.va = &args; + pr_warn("(%s): %pV\n", sb->s_id, &vaf); va_end(args); - - printk(KERN_WARNING "BeFS(%s): %s\n", sb->s_id, err_buf); - - kfree(err_buf); } void @@ -67,25 +55,13 @@ befs_debug(const struct super_block *sb, const char *fmt, ...) { #ifdef CONFIG_BEFS_DEBUG + struct va_format vaf; va_list args; - char *err_buf = NULL; - - if (BEFS_SB(sb)->mount_opts.debug) { - err_buf = kmalloc(ERRBUFSIZE, GFP_KERNEL); - if (err_buf == NULL) { - printk(KERN_ERR "could not allocate %d bytes\n", - ERRBUFSIZE); - return; - } - - va_start(args, fmt); - vsnprintf(err_buf, ERRBUFSIZE, fmt, args); - va_end(args); - - printk(KERN_DEBUG "BeFS(%s): %s\n", sb->s_id, err_buf); - - kfree(err_buf); - } + va_start(args, fmt); + vaf.fmt = fmt; + vaf.va = &args; + pr_debug("(%s): %pV\n", sb->s_id, &vaf); + va_end(args); #endif //CONFIG_BEFS_DEBUG } @@ -109,9 +85,9 @@ befs_dump_inode(const struct super_block *sb, befs_inode * inode) befs_debug(sb, " gid %u", fs32_to_cpu(sb, inode->gid)); befs_debug(sb, " mode %08x", fs32_to_cpu(sb, inode->mode)); befs_debug(sb, " flags %08x", fs32_to_cpu(sb, inode->flags)); - befs_debug(sb, " create_time %Lu", + befs_debug(sb, " create_time %llu", fs64_to_cpu(sb, inode->create_time)); - befs_debug(sb, " last_modified_time %Lu", + befs_debug(sb, " last_modified_time %llu", fs64_to_cpu(sb, inode->last_modified_time)); tmp_run = fsrun_to_cpu(sb, inode->parent); @@ -137,7 +113,7 @@ befs_dump_inode(const struct super_block *sb, befs_inode * inode) tmp_run.allocation_group, tmp_run.start, tmp_run.len); } - befs_debug(sb, " max_direct_range %Lu", + befs_debug(sb, " max_direct_range %llu", fs64_to_cpu(sb, inode->data.datastream. max_direct_range)); @@ -147,7 +123,7 @@ befs_dump_inode(const struct super_block *sb, befs_inode * inode) tmp_run.allocation_group, tmp_run.start, tmp_run.len); - befs_debug(sb, " max_indirect_range %Lu", + befs_debug(sb, " max_indirect_range %llu", fs64_to_cpu(sb, inode->data.datastream. max_indirect_range)); @@ -158,12 +134,12 @@ befs_dump_inode(const struct super_block *sb, befs_inode * inode) tmp_run.allocation_group, tmp_run.start, tmp_run.len); - befs_debug(sb, " max_double_indirect_range %Lu", + befs_debug(sb, " max_double_indirect_range %llu", fs64_to_cpu(sb, inode->data.datastream. max_double_indirect_range)); - befs_debug(sb, " size %Lu", + befs_debug(sb, " size %llu", fs64_to_cpu(sb, inode->data.datastream.size)); } @@ -191,8 +167,8 @@ befs_dump_super_block(const struct super_block *sb, befs_super_block * sup) befs_debug(sb, " block_size %u", fs32_to_cpu(sb, sup->block_size)); befs_debug(sb, " block_shift %u", fs32_to_cpu(sb, sup->block_shift)); - befs_debug(sb, " num_blocks %Lu", fs64_to_cpu(sb, sup->num_blocks)); - befs_debug(sb, " used_blocks %Lu", fs64_to_cpu(sb, sup->used_blocks)); + befs_debug(sb, " num_blocks %llu", fs64_to_cpu(sb, sup->num_blocks)); + befs_debug(sb, " used_blocks %llu", fs64_to_cpu(sb, sup->used_blocks)); befs_debug(sb, " magic2 %08x", fs32_to_cpu(sb, sup->magic2)); befs_debug(sb, " blocks_per_ag %u", @@ -206,8 +182,8 @@ befs_dump_super_block(const struct super_block *sb, befs_super_block * sup) befs_debug(sb, " log_blocks %u, %hu, %hu", tmp_run.allocation_group, tmp_run.start, tmp_run.len); - befs_debug(sb, " log_start %Ld", fs64_to_cpu(sb, sup->log_start)); - befs_debug(sb, " log_end %Ld", fs64_to_cpu(sb, sup->log_end)); + befs_debug(sb, " log_start %lld", fs64_to_cpu(sb, sup->log_start)); + befs_debug(sb, " log_end %lld", fs64_to_cpu(sb, sup->log_end)); befs_debug(sb, " magic3 %08x", fs32_to_cpu(sb, sup->magic3)); diff --git a/fs/befs/inode.c b/fs/befs/inode.c index 94c17f9a9576..fa4b718de597 100644 --- a/fs/befs/inode.c +++ b/fs/befs/inode.c @@ -25,7 +25,8 @@ befs_check_inode(struct super_block *sb, befs_inode * raw_inode, /* check magic header. */ if (magic1 != BEFS_INODE_MAGIC1) { befs_error(sb, - "Inode has a bad magic header - inode = %lu", inode); + "Inode has a bad magic header - inode = %lu", + (unsigned long)inode); return BEFS_BAD_INODE; } @@ -34,8 +35,8 @@ befs_check_inode(struct super_block *sb, befs_inode * raw_inode, */ if (inode != iaddr2blockno(sb, &ino_num)) { befs_error(sb, "inode blocknr field disagrees with vfs " - "VFS: %lu, Inode %lu", - inode, iaddr2blockno(sb, &ino_num)); + "VFS: %lu, Inode %lu", (unsigned long) + inode, (unsigned long)iaddr2blockno(sb, &ino_num)); return BEFS_BAD_INODE; } @@ -44,7 +45,8 @@ befs_check_inode(struct super_block *sb, befs_inode * raw_inode, */ if (!(flags & BEFS_INODE_IN_USE)) { - befs_error(sb, "inode is not used - inode = %lu", inode); + befs_error(sb, "inode is not used - inode = %lu", + (unsigned long)inode); return BEFS_BAD_INODE; } diff --git a/fs/befs/io.c b/fs/befs/io.c index ddef98aa255d..0408a3d601d0 100644 --- a/fs/befs/io.c +++ b/fs/befs/io.c @@ -30,9 +30,9 @@ befs_bread_iaddr(struct super_block *sb, befs_inode_addr iaddr) befs_blocknr_t block = 0; befs_sb_info *befs_sb = BEFS_SB(sb); - befs_debug(sb, "---> Enter befs_read_iaddr() " - "[%u, %hu, %hu]", - iaddr.allocation_group, iaddr.start, iaddr.len); + befs_debug(sb, "---> Enter %s " + "[%u, %hu, %hu]", __func__, iaddr.allocation_group, + iaddr.start, iaddr.len); if (iaddr.allocation_group > befs_sb->num_ags) { befs_error(sb, "BEFS: Invalid allocation group %u, max is %u", @@ -42,20 +42,21 @@ befs_bread_iaddr(struct super_block *sb, befs_inode_addr iaddr) block = iaddr2blockno(sb, &iaddr); - befs_debug(sb, "befs_read_iaddr: offset = %lu", block); + befs_debug(sb, "%s: offset = %lu", __func__, (unsigned long)block); bh = sb_bread(sb, block); if (bh == NULL) { - befs_error(sb, "Failed to read block %lu", block); + befs_error(sb, "Failed to read block %lu", + (unsigned long)block); goto error; } - befs_debug(sb, "<--- befs_read_iaddr()"); + befs_debug(sb, "<--- %s", __func__); return bh; error: - befs_debug(sb, "<--- befs_read_iaddr() ERROR"); + befs_debug(sb, "<--- %s ERROR", __func__); return NULL; } @@ -64,20 +65,21 @@ befs_bread(struct super_block *sb, befs_blocknr_t block) { struct buffer_head *bh = NULL; - befs_debug(sb, "---> Enter befs_read() %Lu", block); + befs_debug(sb, "---> Enter %s %lu", __func__, (unsigned long)block); bh = sb_bread(sb, block); if (bh == NULL) { - befs_error(sb, "Failed to read block %lu", block); + befs_error(sb, "Failed to read block %lu", + (unsigned long)block); goto error; } - befs_debug(sb, "<--- befs_read()"); + befs_debug(sb, "<--- %s", __func__); return bh; error: - befs_debug(sb, "<--- befs_read() ERROR"); + befs_debug(sb, "<--- %s ERROR", __func__); return NULL; } diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c index daa15d6ba450..d626756ff721 100644 --- a/fs/befs/linuxvfs.c +++ b/fs/befs/linuxvfs.c @@ -5,6 +5,8 @@ * */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/module.h> #include <linux/slab.h> #include <linux/fs.h> @@ -39,7 +41,6 @@ static struct dentry *befs_lookup(struct inode *, struct dentry *, unsigned int) static struct inode *befs_iget(struct super_block *, unsigned long); static struct inode *befs_alloc_inode(struct super_block *sb); static void befs_destroy_inode(struct inode *inode); -static int befs_init_inodecache(void); static void befs_destroy_inodecache(void); static void *befs_follow_link(struct dentry *, struct nameidata *); static void *befs_fast_follow_link(struct dentry *, struct nameidata *); @@ -131,26 +132,28 @@ befs_get_block(struct inode *inode, sector_t block, ulong disk_off; befs_debug(sb, "---> befs_get_block() for inode %lu, block %ld", - inode->i_ino, block); + (unsigned long)inode->i_ino, (long)block); if (block < 0) { befs_error(sb, "befs_get_block() was asked for a block " "number less than zero: block %ld in inode %lu", - block, inode->i_ino); + (long)block, (unsigned long)inode->i_ino); return -EIO; } if (create) { befs_error(sb, "befs_get_block() was asked to write to " - "block %ld in inode %lu", block, inode->i_ino); + "block %ld in inode %lu", (long)block, + (unsigned long)inode->i_ino); return -EPERM; } res = befs_fblock2brun(sb, ds, block, &run); if (res != BEFS_OK) { befs_error(sb, - "<--- befs_get_block() for inode %lu, block " - "%ld ERROR", inode->i_ino, block); + "<--- %s for inode %lu, block %ld ERROR", + __func__, (unsigned long)inode->i_ino, + (long)block); return -EFBIG; } @@ -158,8 +161,9 @@ befs_get_block(struct inode *inode, sector_t block, map_bh(bh_result, inode->i_sb, disk_off); - befs_debug(sb, "<--- befs_get_block() for inode %lu, block %ld, " - "disk address %lu", inode->i_ino, block, disk_off); + befs_debug(sb, "<--- %s for inode %lu, block %ld, disk address %lu", + __func__, (unsigned long)inode->i_ino, (long)block, + (unsigned long)disk_off); return 0; } @@ -176,15 +180,15 @@ befs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) char *utfname; const char *name = dentry->d_name.name; - befs_debug(sb, "---> befs_lookup() " - "name %s inode %ld", dentry->d_name.name, dir->i_ino); + befs_debug(sb, "---> %s name %s inode %ld", __func__, + dentry->d_name.name, dir->i_ino); /* Convert to UTF-8 */ if (BEFS_SB(sb)->nls) { ret = befs_nls2utf(sb, name, strlen(name), &utfname, &utfnamelen); if (ret < 0) { - befs_debug(sb, "<--- befs_lookup() ERROR"); + befs_debug(sb, "<--- %s ERROR", __func__); return ERR_PTR(ret); } ret = befs_btree_find(sb, ds, utfname, &offset); @@ -195,12 +199,12 @@ befs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) } if (ret == BEFS_BT_NOT_FOUND) { - befs_debug(sb, "<--- befs_lookup() %s not found", + befs_debug(sb, "<--- %s %s not found", __func__, dentry->d_name.name); return ERR_PTR(-ENOENT); } else if (ret != BEFS_OK || offset == 0) { - befs_warning(sb, "<--- befs_lookup() Error"); + befs_warning(sb, "<--- %s Error", __func__); return ERR_PTR(-ENODATA); } @@ -210,7 +214,7 @@ befs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) d_add(dentry, inode); - befs_debug(sb, "<--- befs_lookup()"); + befs_debug(sb, "<--- %s", __func__); return NULL; } @@ -228,26 +232,25 @@ befs_readdir(struct file *file, struct dir_context *ctx) char keybuf[BEFS_NAME_LEN + 1]; const char *dirname = file->f_path.dentry->d_name.name; - befs_debug(sb, "---> befs_readdir() " - "name %s, inode %ld, ctx->pos %Ld", - dirname, inode->i_ino, ctx->pos); + befs_debug(sb, "---> %s name %s, inode %ld, ctx->pos %lld", + __func__, dirname, inode->i_ino, ctx->pos); more: result = befs_btree_read(sb, ds, ctx->pos, BEFS_NAME_LEN + 1, keybuf, &keysize, &value); if (result == BEFS_ERR) { - befs_debug(sb, "<--- befs_readdir() ERROR"); + befs_debug(sb, "<--- %s ERROR", __func__); befs_error(sb, "IO error reading %s (inode %lu)", dirname, inode->i_ino); return -EIO; } else if (result == BEFS_BT_END) { - befs_debug(sb, "<--- befs_readdir() END"); + befs_debug(sb, "<--- %s END", __func__); return 0; } else if (result == BEFS_BT_EMPTY) { - befs_debug(sb, "<--- befs_readdir() Empty directory"); + befs_debug(sb, "<--- %s Empty directory", __func__); return 0; } @@ -260,7 +263,7 @@ more: result = befs_utf2nls(sb, keybuf, keysize, &nlsname, &nlsnamelen); if (result < 0) { - befs_debug(sb, "<--- befs_readdir() ERROR"); + befs_debug(sb, "<--- %s ERROR", __func__); return result; } if (!dir_emit(ctx, nlsname, nlsnamelen, @@ -277,7 +280,7 @@ more: ctx->pos++; goto more; - befs_debug(sb, "<--- befs_readdir() pos %Ld", ctx->pos); + befs_debug(sb, "<--- %s pos %lld", __func__, ctx->pos); return 0; } @@ -321,11 +324,11 @@ static struct inode *befs_iget(struct super_block *sb, unsigned long ino) struct inode *inode; long ret = -EIO; - befs_debug(sb, "---> befs_read_inode() " "inode = %lu", ino); + befs_debug(sb, "---> %s inode = %lu", __func__, ino); inode = iget_locked(sb, ino); - if (IS_ERR(inode)) - return inode; + if (!inode) + return ERR_PTR(-ENOMEM); if (!(inode->i_state & I_NEW)) return inode; @@ -428,7 +431,7 @@ static struct inode *befs_iget(struct super_block *sb, unsigned long ino) } brelse(bh); - befs_debug(sb, "<--- befs_read_inode()"); + befs_debug(sb, "<--- %s", __func__); unlock_new_inode(inode); return inode; @@ -437,7 +440,7 @@ static struct inode *befs_iget(struct super_block *sb, unsigned long ino) unacquire_none: iget_failed(inode); - befs_debug(sb, "<--- befs_read_inode() - Bad inode"); + befs_debug(sb, "<--- %s - Bad inode", __func__); return ERR_PTR(ret); } @@ -445,7 +448,7 @@ static struct inode *befs_iget(struct super_block *sb, unsigned long ino) * * Taken from NFS implementation by Al Viro. */ -static int +static int __init befs_init_inodecache(void) { befs_inode_cachep = kmem_cache_create("befs_inode_cache", @@ -454,11 +457,9 @@ befs_init_inodecache(void) SLAB_MEM_SPREAD), init_once); if (befs_inode_cachep == NULL) { - printk(KERN_ERR "befs_init_inodecache: " - "Couldn't initialize inode slabcache\n"); + pr_err("%s: Couldn't initialize inode slabcache\n", __func__); return -ENOMEM; } - return 0; } @@ -544,16 +545,16 @@ befs_utf2nls(struct super_block *sb, const char *in, */ int maxlen = in_len + 1; - befs_debug(sb, "---> utf2nls()"); + befs_debug(sb, "---> %s", __func__); if (!nls) { - befs_error(sb, "befs_utf2nls called with no NLS table loaded"); + befs_error(sb, "%s called with no NLS table loaded", __func__); return -EINVAL; } *out = result = kmalloc(maxlen, GFP_NOFS); if (!*out) { - befs_error(sb, "befs_utf2nls() cannot allocate memory"); + befs_error(sb, "%s cannot allocate memory", __func__); *out_len = 0; return -ENOMEM; } @@ -575,14 +576,14 @@ befs_utf2nls(struct super_block *sb, const char *in, result[o] = '\0'; *out_len = o; - befs_debug(sb, "<--- utf2nls()"); + befs_debug(sb, "<--- %s", __func__); return o; conv_err: befs_error(sb, "Name using character set %s contains a character that " "cannot be converted to unicode.", nls->charset); - befs_debug(sb, "<--- utf2nls()"); + befs_debug(sb, "<--- %s", __func__); kfree(result); return -EILSEQ; } @@ -623,16 +624,17 @@ befs_nls2utf(struct super_block *sb, const char *in, * in special cases */ int maxlen = (3 * in_len) + 1; - befs_debug(sb, "---> nls2utf()\n"); + befs_debug(sb, "---> %s\n", __func__); if (!nls) { - befs_error(sb, "befs_nls2utf called with no NLS table loaded."); + befs_error(sb, "%s called with no NLS table loaded.", + __func__); return -EINVAL; } *out = result = kmalloc(maxlen, GFP_NOFS); if (!*out) { - befs_error(sb, "befs_nls2utf() cannot allocate memory"); + befs_error(sb, "%s cannot allocate memory", __func__); *out_len = 0; return -ENOMEM; } @@ -653,14 +655,14 @@ befs_nls2utf(struct super_block *sb, const char *in, result[o] = '\0'; *out_len = o; - befs_debug(sb, "<--- nls2utf()"); + befs_debug(sb, "<--- %s", __func__); return i; conv_err: befs_error(sb, "Name using charecter set %s contains a charecter that " "cannot be converted to unicode.", nls->charset); - befs_debug(sb, "<--- nls2utf()"); + befs_debug(sb, "<--- %s", __func__); kfree(result); return -EILSEQ; } @@ -715,8 +717,8 @@ parse_options(char *options, befs_mount_options * opts) if (option >= 0) uid = make_kuid(current_user_ns(), option); if (!uid_valid(uid)) { - printk(KERN_ERR "BeFS: Invalid uid %d, " - "using default\n", option); + pr_err("Invalid uid %d, " + "using default\n", option); break; } opts->uid = uid; @@ -729,8 +731,8 @@ parse_options(char *options, befs_mount_options * opts) if (option >= 0) gid = make_kgid(current_user_ns(), option); if (!gid_valid(gid)) { - printk(KERN_ERR "BeFS: Invalid gid %d, " - "using default\n", option); + pr_err("Invalid gid %d, " + "using default\n", option); break; } opts->gid = gid; @@ -740,8 +742,8 @@ parse_options(char *options, befs_mount_options * opts) kfree(opts->iocharset); opts->iocharset = match_strdup(&args[0]); if (!opts->iocharset) { - printk(KERN_ERR "BeFS: allocation failure for " - "iocharset string\n"); + pr_err("allocation failure for " + "iocharset string\n"); return 0; } break; @@ -749,8 +751,8 @@ parse_options(char *options, befs_mount_options * opts) opts->debug = 1; break; default: - printk(KERN_ERR "BeFS: Unrecognized mount option \"%s\" " - "or missing value\n", p); + pr_err("Unrecognized mount option \"%s\" " + "or missing value\n", p); return 0; } } @@ -791,22 +793,20 @@ befs_fill_super(struct super_block *sb, void *data, int silent) save_mount_options(sb, data); - sb->s_fs_info = kmalloc(sizeof (*befs_sb), GFP_KERNEL); + sb->s_fs_info = kzalloc(sizeof(*befs_sb), GFP_KERNEL); if (sb->s_fs_info == NULL) { - printk(KERN_ERR - "BeFS(%s): Unable to allocate memory for private " + pr_err("(%s): Unable to allocate memory for private " "portion of superblock. Bailing.\n", sb->s_id); goto unacquire_none; } befs_sb = BEFS_SB(sb); - memset(befs_sb, 0, sizeof(befs_sb_info)); if (!parse_options((char *) data, &befs_sb->mount_opts)) { befs_error(sb, "cannot parse mount options"); goto unacquire_priv_sbp; } - befs_debug(sb, "---> befs_fill_super()"); + befs_debug(sb, "---> %s", __func__); #ifndef CONFIG_BEFS_RW if (!(sb->s_flags & MS_RDONLY)) { @@ -854,7 +854,7 @@ befs_fill_super(struct super_block *sb, void *data, int silent) goto unacquire_priv_sbp; if( befs_sb->num_blocks > ~((sector_t)0) ) { - befs_error(sb, "blocks count: %Lu " + befs_error(sb, "blocks count: %llu " "is larger than the host can use", befs_sb->num_blocks); goto unacquire_priv_sbp; @@ -913,6 +913,7 @@ befs_fill_super(struct super_block *sb, void *data, int silent) static int befs_remount(struct super_block *sb, int *flags, char *data) { + sync_filesystem(sb); if (!(*flags & MS_RDONLY)) return -EINVAL; return 0; @@ -924,7 +925,7 @@ befs_statfs(struct dentry *dentry, struct kstatfs *buf) struct super_block *sb = dentry->d_sb; u64 id = huge_encode_dev(sb->s_bdev->bd_dev); - befs_debug(sb, "---> befs_statfs()"); + befs_debug(sb, "---> %s", __func__); buf->f_type = BEFS_SUPER_MAGIC; buf->f_bsize = sb->s_blocksize; @@ -937,7 +938,7 @@ befs_statfs(struct dentry *dentry, struct kstatfs *buf) buf->f_fsid.val[1] = (u32)(id >> 32); buf->f_namelen = BEFS_NAME_LEN; - befs_debug(sb, "<--- befs_statfs()"); + befs_debug(sb, "<--- %s", __func__); return 0; } @@ -963,7 +964,7 @@ init_befs_fs(void) { int err; - printk(KERN_INFO "BeFS version: %s\n", BEFS_VERSION); + pr_info("version: %s\n", BEFS_VERSION); err = befs_init_inodecache(); if (err) diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c index 8defc6b3f9a2..7041ac35ace8 100644 --- a/fs/bfs/inode.c +++ b/fs/bfs/inode.c @@ -172,7 +172,7 @@ static void bfs_evict_inode(struct inode *inode) dprintf("ino=%08lx\n", ino); - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); invalidate_inode_buffers(inode); clear_inode(inode); @@ -266,7 +266,7 @@ static void init_once(void *foo) inode_init_once(&bi->vfs_inode); } -static int init_inodecache(void) +static int __init init_inodecache(void) { bfs_inode_cachep = kmem_cache_create("bfs_inode_cache", sizeof(struct bfs_inode_info), diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 571a42326908..aa3cb626671e 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -46,10 +46,15 @@ #endif static int load_elf_binary(struct linux_binprm *bprm); -static int load_elf_library(struct file *); static unsigned long elf_map(struct file *, unsigned long, struct elf_phdr *, int, int, unsigned long); +#ifdef CONFIG_USELIB +static int load_elf_library(struct file *); +#else +#define load_elf_library NULL +#endif + /* * If we don't support core dumping, then supply a NULL so we * don't even try. @@ -543,9 +548,6 @@ out: * libraries. There is no binary dependent code anywhere else. */ -#define INTERPRETER_NONE 0 -#define INTERPRETER_ELF 2 - #ifndef STACK_RND_MASK #define STACK_RND_MASK (0x7ff >> (PAGE_SHIFT - 12)) /* 8MB of VA */ #endif @@ -582,7 +584,6 @@ static int load_elf_binary(struct linux_binprm *bprm) unsigned long start_code, end_code, start_data, end_data; unsigned long reloc_func_desc __maybe_unused = 0; int executable_stack = EXSTACK_DEFAULT; - unsigned long def_flags = 0; struct pt_regs *regs = current_pt_regs(); struct { struct elfhdr elf_ex; @@ -722,9 +723,6 @@ static int load_elf_binary(struct linux_binprm *bprm) if (retval) goto out_free_dentry; - /* OK, This is the point of no return */ - current->mm->def_flags = def_flags; - /* Do this immediately, since STACK_TOP as used in setup_arg_pages may depend on the personality. */ SET_PERSONALITY(loc->elf_ex); @@ -1008,6 +1006,7 @@ out_free_ph: goto out; } +#ifdef CONFIG_USELIB /* This is really simpleminded and specialized - we are loading an a.out library that is given an ELF header. */ static int load_elf_library(struct file *file) @@ -1086,6 +1085,7 @@ out_free_ph: out: return error; } +#endif /* #ifdef CONFIG_USELIB */ #ifdef CONFIG_ELF_CORE /* diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c index 1c740e152f38..b60500300dd7 100644 --- a/fs/binfmt_misc.c +++ b/fs/binfmt_misc.c @@ -656,6 +656,7 @@ static ssize_t bm_status_write(struct file * file, const char __user * buffer, mutex_unlock(&root->d_inode->i_mutex); dput(root); + break; default: return res; } return count; diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c index fc60b31453ee..1c2ce0c87711 100644 --- a/fs/bio-integrity.c +++ b/fs/bio-integrity.c @@ -114,6 +114,14 @@ void bio_integrity_free(struct bio *bio) } EXPORT_SYMBOL(bio_integrity_free); +static inline unsigned int bip_integrity_vecs(struct bio_integrity_payload *bip) +{ + if (bip->bip_slab == BIO_POOL_NONE) + return BIP_INLINE_VECS; + + return bvec_nr_vecs(bip->bip_slab); +} + /** * bio_integrity_add_page - Attach integrity metadata * @bio: bio to update @@ -129,13 +137,12 @@ int bio_integrity_add_page(struct bio *bio, struct page *page, struct bio_integrity_payload *bip = bio->bi_integrity; struct bio_vec *iv; - if (bip->bip_vcnt >= bvec_nr_vecs(bip->bip_slab)) { + if (bip->bip_vcnt >= bip_integrity_vecs(bip)) { printk(KERN_ERR "%s: bip_vec full\n", __func__); return 0; } - iv = bip_vec_idx(bip, bip->bip_vcnt); - BUG_ON(iv == NULL); + iv = bip->bip_vec + bip->bip_vcnt; iv->bv_page = page; iv->bv_len = len; @@ -175,6 +182,9 @@ static int bdev_integrity_enabled(struct block_device *bdev, int rw) */ int bio_integrity_enabled(struct bio *bio) { + if (!bio_is_rw(bio)) + return 0; + /* Already protected? */ if (bio_integrity(bio)) return 0; @@ -203,6 +213,12 @@ static inline unsigned int bio_integrity_hw_sectors(struct blk_integrity *bi, return sectors; } +static inline unsigned int bio_integrity_bytes(struct blk_integrity *bi, + unsigned int sectors) +{ + return bio_integrity_hw_sectors(bi, sectors) * bi->tuple_size; +} + /** * bio_integrity_tag_size - Retrieve integrity tag space * @bio: bio to inspect @@ -215,13 +231,14 @@ unsigned int bio_integrity_tag_size(struct bio *bio) { struct blk_integrity *bi = bdev_get_integrity(bio->bi_bdev); - BUG_ON(bio->bi_size == 0); + BUG_ON(bio->bi_iter.bi_size == 0); - return bi->tag_size * (bio->bi_size / bi->sector_size); + return bi->tag_size * (bio->bi_iter.bi_size / bi->sector_size); } EXPORT_SYMBOL(bio_integrity_tag_size); -int bio_integrity_tag(struct bio *bio, void *tag_buf, unsigned int len, int set) +static int bio_integrity_tag(struct bio *bio, void *tag_buf, unsigned int len, + int set) { struct bio_integrity_payload *bip = bio->bi_integrity; struct blk_integrity *bi = bdev_get_integrity(bio->bi_bdev); @@ -235,9 +252,9 @@ int bio_integrity_tag(struct bio *bio, void *tag_buf, unsigned int len, int set) nr_sectors = bio_integrity_hw_sectors(bi, DIV_ROUND_UP(len, bi->tag_size)); - if (nr_sectors * bi->tuple_size > bip->bip_size) { - printk(KERN_ERR "%s: tag too big for bio: %u > %u\n", - __func__, nr_sectors * bi->tuple_size, bip->bip_size); + if (nr_sectors * bi->tuple_size > bip->bip_iter.bi_size) { + printk(KERN_ERR "%s: tag too big for bio: %u > %u\n", __func__, + nr_sectors * bi->tuple_size, bip->bip_iter.bi_size); return -1; } @@ -287,44 +304,65 @@ int bio_integrity_get_tag(struct bio *bio, void *tag_buf, unsigned int len) EXPORT_SYMBOL(bio_integrity_get_tag); /** - * bio_integrity_generate - Generate integrity metadata for a bio - * @bio: bio to generate integrity metadata for - * - * Description: Generates integrity metadata for a bio by calling the - * block device's generation callback function. The bio must have a - * bip attached with enough room to accommodate the generated - * integrity metadata. + * bio_integrity_generate_verify - Generate/verify integrity metadata for a bio + * @bio: bio to generate/verify integrity metadata for + * @operate: operate number, 1 for generate, 0 for verify */ -static void bio_integrity_generate(struct bio *bio) +static int bio_integrity_generate_verify(struct bio *bio, int operate) { struct blk_integrity *bi = bdev_get_integrity(bio->bi_bdev); struct blk_integrity_exchg bix; struct bio_vec *bv; - sector_t sector = bio->bi_sector; - unsigned int i, sectors, total; + sector_t sector; + unsigned int sectors, ret = 0, i; void *prot_buf = bio->bi_integrity->bip_buf; - total = 0; + if (operate) + sector = bio->bi_iter.bi_sector; + else + sector = bio->bi_integrity->bip_iter.bi_sector; + bix.disk_name = bio->bi_bdev->bd_disk->disk_name; bix.sector_size = bi->sector_size; - bio_for_each_segment(bv, bio, i) { + bio_for_each_segment_all(bv, bio, i) { void *kaddr = kmap_atomic(bv->bv_page); bix.data_buf = kaddr + bv->bv_offset; bix.data_size = bv->bv_len; bix.prot_buf = prot_buf; bix.sector = sector; - bi->generate_fn(&bix); + if (operate) + bi->generate_fn(&bix); + else { + ret = bi->verify_fn(&bix); + if (ret) { + kunmap_atomic(kaddr); + return ret; + } + } sectors = bv->bv_len / bi->sector_size; sector += sectors; prot_buf += sectors * bi->tuple_size; - total += sectors * bi->tuple_size; - BUG_ON(total > bio->bi_integrity->bip_size); kunmap_atomic(kaddr); } + return ret; +} + +/** + * bio_integrity_generate - Generate integrity metadata for a bio + * @bio: bio to generate integrity metadata for + * + * Description: Generates integrity metadata for a bio by calling the + * block device's generation callback function. The bio must have a + * bip attached with enough room to accommodate the generated + * integrity metadata. + */ +static void bio_integrity_generate(struct bio *bio) +{ + bio_integrity_generate_verify(bio, 1); } static inline unsigned short blk_integrity_tuple_size(struct blk_integrity *bi) @@ -386,8 +424,8 @@ int bio_integrity_prep(struct bio *bio) bip->bip_owns_buf = 1; bip->bip_buf = buf; - bip->bip_size = len; - bip->bip_sector = bio->bi_sector; + bip->bip_iter.bi_size = len; + bip->bip_iter.bi_sector = bio->bi_iter.bi_sector; /* Map it */ offset = offset_in_page(buf); @@ -439,41 +477,7 @@ EXPORT_SYMBOL(bio_integrity_prep); */ static int bio_integrity_verify(struct bio *bio) { - struct blk_integrity *bi = bdev_get_integrity(bio->bi_bdev); - struct blk_integrity_exchg bix; - struct bio_vec *bv; - sector_t sector = bio->bi_integrity->bip_sector; - unsigned int i, sectors, total, ret; - void *prot_buf = bio->bi_integrity->bip_buf; - - ret = total = 0; - bix.disk_name = bio->bi_bdev->bd_disk->disk_name; - bix.sector_size = bi->sector_size; - - bio_for_each_segment(bv, bio, i) { - void *kaddr = kmap_atomic(bv->bv_page); - bix.data_buf = kaddr + bv->bv_offset; - bix.data_size = bv->bv_len; - bix.prot_buf = prot_buf; - bix.sector = sector; - - ret = bi->verify_fn(&bix); - - if (ret) { - kunmap_atomic(kaddr); - return ret; - } - - sectors = bv->bv_len / bi->sector_size; - sector += sectors; - prot_buf += sectors * bi->tuple_size; - total += sectors * bi->tuple_size; - BUG_ON(total > bio->bi_integrity->bip_size); - - kunmap_atomic(kaddr); - } - - return ret; + return bio_integrity_generate_verify(bio, 0); } /** @@ -495,7 +499,7 @@ static void bio_integrity_verify_fn(struct work_struct *work) /* Restore original bio completion handler */ bio->bi_end_io = bip->bip_end_io; - bio_endio(bio, error); + bio_endio_nodec(bio, error); } /** @@ -533,56 +537,6 @@ void bio_integrity_endio(struct bio *bio, int error) EXPORT_SYMBOL(bio_integrity_endio); /** - * bio_integrity_mark_head - Advance bip_vec skip bytes - * @bip: Integrity vector to advance - * @skip: Number of bytes to advance it - */ -void bio_integrity_mark_head(struct bio_integrity_payload *bip, - unsigned int skip) -{ - struct bio_vec *iv; - unsigned int i; - - bip_for_each_vec(iv, bip, i) { - if (skip == 0) { - bip->bip_idx = i; - return; - } else if (skip >= iv->bv_len) { - skip -= iv->bv_len; - } else { /* skip < iv->bv_len) */ - iv->bv_offset += skip; - iv->bv_len -= skip; - bip->bip_idx = i; - return; - } - } -} - -/** - * bio_integrity_mark_tail - Truncate bip_vec to be len bytes long - * @bip: Integrity vector to truncate - * @len: New length of integrity vector - */ -void bio_integrity_mark_tail(struct bio_integrity_payload *bip, - unsigned int len) -{ - struct bio_vec *iv; - unsigned int i; - - bip_for_each_vec(iv, bip, i) { - if (len == 0) { - bip->bip_vcnt = i; - return; - } else if (len >= iv->bv_len) { - len -= iv->bv_len; - } else { /* len < iv->bv_len) */ - iv->bv_len = len; - len = 0; - } - } -} - -/** * bio_integrity_advance - Advance integrity vector * @bio: bio whose integrity vector to update * @bytes_done: number of data bytes that have been completed @@ -595,13 +549,9 @@ void bio_integrity_advance(struct bio *bio, unsigned int bytes_done) { struct bio_integrity_payload *bip = bio->bi_integrity; struct blk_integrity *bi = bdev_get_integrity(bio->bi_bdev); - unsigned int nr_sectors; - - BUG_ON(bip == NULL); - BUG_ON(bi == NULL); + unsigned bytes = bio_integrity_bytes(bi, bytes_done >> 9); - nr_sectors = bio_integrity_hw_sectors(bi, bytes_done >> 9); - bio_integrity_mark_head(bip, nr_sectors * bi->tuple_size); + bvec_iter_advance(bip->bip_vec, &bip->bip_iter, bytes); } EXPORT_SYMBOL(bio_integrity_advance); @@ -621,64 +571,13 @@ void bio_integrity_trim(struct bio *bio, unsigned int offset, { struct bio_integrity_payload *bip = bio->bi_integrity; struct blk_integrity *bi = bdev_get_integrity(bio->bi_bdev); - unsigned int nr_sectors; - - BUG_ON(bip == NULL); - BUG_ON(bi == NULL); - BUG_ON(!bio_flagged(bio, BIO_CLONED)); - nr_sectors = bio_integrity_hw_sectors(bi, sectors); - bip->bip_sector = bip->bip_sector + offset; - bio_integrity_mark_head(bip, offset * bi->tuple_size); - bio_integrity_mark_tail(bip, sectors * bi->tuple_size); + bio_integrity_advance(bio, offset << 9); + bip->bip_iter.bi_size = bio_integrity_bytes(bi, sectors); } EXPORT_SYMBOL(bio_integrity_trim); /** - * bio_integrity_split - Split integrity metadata - * @bio: Protected bio - * @bp: Resulting bio_pair - * @sectors: Offset - * - * Description: Splits an integrity page into a bio_pair. - */ -void bio_integrity_split(struct bio *bio, struct bio_pair *bp, int sectors) -{ - struct blk_integrity *bi; - struct bio_integrity_payload *bip = bio->bi_integrity; - unsigned int nr_sectors; - - if (bio_integrity(bio) == 0) - return; - - bi = bdev_get_integrity(bio->bi_bdev); - BUG_ON(bi == NULL); - BUG_ON(bip->bip_vcnt != 1); - - nr_sectors = bio_integrity_hw_sectors(bi, sectors); - - bp->bio1.bi_integrity = &bp->bip1; - bp->bio2.bi_integrity = &bp->bip2; - - bp->iv1 = bip->bip_vec[bip->bip_idx]; - bp->iv2 = bip->bip_vec[bip->bip_idx]; - - bp->bip1.bip_vec = &bp->iv1; - bp->bip2.bip_vec = &bp->iv2; - - bp->iv1.bv_len = sectors * bi->tuple_size; - bp->iv2.bv_offset += sectors * bi->tuple_size; - bp->iv2.bv_len -= sectors * bi->tuple_size; - - bp->bip1.bip_sector = bio->bi_integrity->bip_sector; - bp->bip2.bip_sector = bio->bi_integrity->bip_sector + nr_sectors; - - bp->bip1.bip_vcnt = bp->bip2.bip_vcnt = 1; - bp->bip1.bip_idx = bp->bip2.bip_idx = 0; -} -EXPORT_SYMBOL(bio_integrity_split); - -/** * bio_integrity_clone - Callback for cloning bios with integrity metadata * @bio: New bio * @bio_src: Original bio @@ -702,9 +601,8 @@ int bio_integrity_clone(struct bio *bio, struct bio *bio_src, memcpy(bip->bip_vec, bip_src->bip_vec, bip_src->bip_vcnt * sizeof(struct bio_vec)); - bip->bip_sector = bip_src->bip_sector; bip->bip_vcnt = bip_src->bip_vcnt; - bip->bip_idx = bip_src->bip_idx; + bip->bip_iter = bip_src->bip_iter; return 0; } diff --git a/fs/bio.c b/fs/bio.c index 33d79a4eb92d..b1bc722b89aa 100644 --- a/fs/bio.c +++ b/fs/bio.c @@ -38,8 +38,6 @@ */ #define BIO_INLINE_VECS 4 -static mempool_t *bio_split_pool __read_mostly; - /* * if you change this list, also change bvec_alloc or things will * break badly! cannot be bigger than what you can fit into an @@ -118,7 +116,6 @@ static struct kmem_cache *bio_find_or_create_slab(unsigned int extra_size) if (!slab) goto out_unlock; - printk(KERN_INFO "bio: create slab <%s> at %d\n", bslab->name, entry); bslab->slab = slab; bslab->slab_ref = 1; bslab->slab_size = sz; @@ -273,6 +270,7 @@ void bio_init(struct bio *bio) { memset(bio, 0, sizeof(*bio)); bio->bi_flags = 1 << BIO_UPTODATE; + atomic_set(&bio->bi_remaining, 1); atomic_set(&bio->bi_cnt, 1); } EXPORT_SYMBOL(bio_init); @@ -295,9 +293,35 @@ void bio_reset(struct bio *bio) memset(bio, 0, BIO_RESET_BYTES); bio->bi_flags = flags|(1 << BIO_UPTODATE); + atomic_set(&bio->bi_remaining, 1); } EXPORT_SYMBOL(bio_reset); +static void bio_chain_endio(struct bio *bio, int error) +{ + bio_endio(bio->bi_private, error); + bio_put(bio); +} + +/** + * bio_chain - chain bio completions + * + * The caller won't have a bi_end_io called when @bio completes - instead, + * @parent's bi_end_io won't be called until both @parent and @bio have + * completed; the chained bio will also be freed when it completes. + * + * The caller must not set bi_private or bi_end_io in @bio. + */ +void bio_chain(struct bio *bio, struct bio *parent) +{ + BUG_ON(bio->bi_private || bio->bi_end_io); + + bio->bi_private = parent; + bio->bi_end_io = bio_chain_endio; + atomic_inc(&parent->bi_remaining); +} +EXPORT_SYMBOL(bio_chain); + static void bio_alloc_rescue(struct work_struct *work) { struct bio_set *bs = container_of(work, struct bio_set, rescue_work); @@ -473,13 +497,13 @@ EXPORT_SYMBOL(bio_alloc_bioset); void zero_fill_bio(struct bio *bio) { unsigned long flags; - struct bio_vec *bv; - int i; + struct bio_vec bv; + struct bvec_iter iter; - bio_for_each_segment(bv, bio, i) { - char *data = bvec_kmap_irq(bv, &flags); - memset(data, 0, bv->bv_len); - flush_dcache_page(bv->bv_page); + bio_for_each_segment(bv, bio, iter) { + char *data = bvec_kmap_irq(&bv, &flags); + memset(data, 0, bv.bv_len); + flush_dcache_page(bv.bv_page); bvec_kunmap_irq(data, &flags); } } @@ -515,51 +539,49 @@ inline int bio_phys_segments(struct request_queue *q, struct bio *bio) EXPORT_SYMBOL(bio_phys_segments); /** - * __bio_clone - clone a bio + * __bio_clone_fast - clone a bio that shares the original bio's biovec * @bio: destination bio * @bio_src: bio to clone * * Clone a &bio. Caller will own the returned bio, but not * the actual data it points to. Reference count of returned * bio will be one. + * + * Caller must ensure that @bio_src is not freed before @bio. */ -void __bio_clone(struct bio *bio, struct bio *bio_src) +void __bio_clone_fast(struct bio *bio, struct bio *bio_src) { - memcpy(bio->bi_io_vec, bio_src->bi_io_vec, - bio_src->bi_max_vecs * sizeof(struct bio_vec)); + BUG_ON(bio->bi_pool && BIO_POOL_IDX(bio) != BIO_POOL_NONE); /* * most users will be overriding ->bi_bdev with a new target, * so we don't set nor calculate new physical/hw segment counts here */ - bio->bi_sector = bio_src->bi_sector; bio->bi_bdev = bio_src->bi_bdev; bio->bi_flags |= 1 << BIO_CLONED; bio->bi_rw = bio_src->bi_rw; - bio->bi_vcnt = bio_src->bi_vcnt; - bio->bi_size = bio_src->bi_size; - bio->bi_idx = bio_src->bi_idx; + bio->bi_iter = bio_src->bi_iter; + bio->bi_io_vec = bio_src->bi_io_vec; } -EXPORT_SYMBOL(__bio_clone); +EXPORT_SYMBOL(__bio_clone_fast); /** - * bio_clone_bioset - clone a bio + * bio_clone_fast - clone a bio that shares the original bio's biovec * @bio: bio to clone * @gfp_mask: allocation priority * @bs: bio_set to allocate from * - * Like __bio_clone, only also allocates the returned bio + * Like __bio_clone_fast, only also allocates the returned bio */ -struct bio *bio_clone_bioset(struct bio *bio, gfp_t gfp_mask, - struct bio_set *bs) +struct bio *bio_clone_fast(struct bio *bio, gfp_t gfp_mask, struct bio_set *bs) { struct bio *b; - b = bio_alloc_bioset(gfp_mask, bio->bi_max_vecs, bs); + b = bio_alloc_bioset(gfp_mask, 0, bs); if (!b) return NULL; - __bio_clone(b, bio); + __bio_clone_fast(b, bio); if (bio_integrity(bio)) { int ret; @@ -574,6 +596,79 @@ struct bio *bio_clone_bioset(struct bio *bio, gfp_t gfp_mask, return b; } +EXPORT_SYMBOL(bio_clone_fast); + +/** + * bio_clone_bioset - clone a bio + * @bio_src: bio to clone + * @gfp_mask: allocation priority + * @bs: bio_set to allocate from + * + * Clone bio. Caller will own the returned bio, but not the actual data it + * points to. Reference count of returned bio will be one. + */ +struct bio *bio_clone_bioset(struct bio *bio_src, gfp_t gfp_mask, + struct bio_set *bs) +{ + struct bvec_iter iter; + struct bio_vec bv; + struct bio *bio; + + /* + * Pre immutable biovecs, __bio_clone() used to just do a memcpy from + * bio_src->bi_io_vec to bio->bi_io_vec. + * + * We can't do that anymore, because: + * + * - The point of cloning the biovec is to produce a bio with a biovec + * the caller can modify: bi_idx and bi_bvec_done should be 0. + * + * - The original bio could've had more than BIO_MAX_PAGES biovecs; if + * we tried to clone the whole thing bio_alloc_bioset() would fail. + * But the clone should succeed as long as the number of biovecs we + * actually need to allocate is fewer than BIO_MAX_PAGES. + * + * - Lastly, bi_vcnt should not be looked at or relied upon by code + * that does not own the bio - reason being drivers don't use it for + * iterating over the biovec anymore, so expecting it to be kept up + * to date (i.e. for clones that share the parent biovec) is just + * asking for trouble and would force extra work on + * __bio_clone_fast() anyways. + */ + + bio = bio_alloc_bioset(gfp_mask, bio_segments(bio_src), bs); + if (!bio) + return NULL; + + bio->bi_bdev = bio_src->bi_bdev; + bio->bi_rw = bio_src->bi_rw; + bio->bi_iter.bi_sector = bio_src->bi_iter.bi_sector; + bio->bi_iter.bi_size = bio_src->bi_iter.bi_size; + + if (bio->bi_rw & REQ_DISCARD) + goto integrity_clone; + + if (bio->bi_rw & REQ_WRITE_SAME) { + bio->bi_io_vec[bio->bi_vcnt++] = bio_src->bi_io_vec[0]; + goto integrity_clone; + } + + bio_for_each_segment(bv, bio_src, iter) + bio->bi_io_vec[bio->bi_vcnt++] = bv; + +integrity_clone: + if (bio_integrity(bio_src)) { + int ret; + + ret = bio_integrity_clone(bio, bio_src, gfp_mask); + if (ret < 0) { + bio_put(bio); + return NULL; + } + } + + return bio; +} EXPORT_SYMBOL(bio_clone_bioset); /** @@ -612,7 +707,7 @@ static int __bio_add_page(struct request_queue *q, struct bio *bio, struct page if (unlikely(bio_flagged(bio, BIO_CLONED))) return 0; - if (((bio->bi_size + len) >> 9) > max_sectors) + if (((bio->bi_iter.bi_size + len) >> 9) > max_sectors) return 0; /* @@ -635,8 +730,9 @@ static int __bio_add_page(struct request_queue *q, struct bio *bio, struct page simulate merging updated prev_bvec as new bvec. */ .bi_bdev = bio->bi_bdev, - .bi_sector = bio->bi_sector, - .bi_size = bio->bi_size - prev_bv_len, + .bi_sector = bio->bi_iter.bi_sector, + .bi_size = bio->bi_iter.bi_size - + prev_bv_len, .bi_rw = bio->bi_rw, }; @@ -684,8 +780,8 @@ static int __bio_add_page(struct request_queue *q, struct bio *bio, struct page if (q->merge_bvec_fn) { struct bvec_merge_data bvm = { .bi_bdev = bio->bi_bdev, - .bi_sector = bio->bi_sector, - .bi_size = bio->bi_size, + .bi_sector = bio->bi_iter.bi_sector, + .bi_size = bio->bi_iter.bi_size, .bi_rw = bio->bi_rw, }; @@ -708,7 +804,7 @@ static int __bio_add_page(struct request_queue *q, struct bio *bio, struct page bio->bi_vcnt++; bio->bi_phys_segments++; done: - bio->bi_size += len; + bio->bi_iter.bi_size += len; return len; } @@ -807,28 +903,7 @@ void bio_advance(struct bio *bio, unsigned bytes) if (bio_integrity(bio)) bio_integrity_advance(bio, bytes); - bio->bi_sector += bytes >> 9; - bio->bi_size -= bytes; - - if (bio->bi_rw & BIO_NO_ADVANCE_ITER_MASK) - return; - - while (bytes) { - if (unlikely(bio->bi_idx >= bio->bi_vcnt)) { - WARN_ONCE(1, "bio idx %d >= vcnt %d\n", - bio->bi_idx, bio->bi_vcnt); - break; - } - - if (bytes >= bio_iovec(bio)->bv_len) { - bytes -= bio_iovec(bio)->bv_len; - bio->bi_idx++; - } else { - bio_iovec(bio)->bv_len -= bytes; - bio_iovec(bio)->bv_offset += bytes; - bytes = 0; - } - } + bio_advance_iter(bio, &bio->bi_iter, bytes); } EXPORT_SYMBOL(bio_advance); @@ -874,117 +949,80 @@ EXPORT_SYMBOL(bio_alloc_pages); */ void bio_copy_data(struct bio *dst, struct bio *src) { - struct bio_vec *src_bv, *dst_bv; - unsigned src_offset, dst_offset, bytes; + struct bvec_iter src_iter, dst_iter; + struct bio_vec src_bv, dst_bv; void *src_p, *dst_p; + unsigned bytes; - src_bv = bio_iovec(src); - dst_bv = bio_iovec(dst); - - src_offset = src_bv->bv_offset; - dst_offset = dst_bv->bv_offset; + src_iter = src->bi_iter; + dst_iter = dst->bi_iter; while (1) { - if (src_offset == src_bv->bv_offset + src_bv->bv_len) { - src_bv++; - if (src_bv == bio_iovec_idx(src, src->bi_vcnt)) { - src = src->bi_next; - if (!src) - break; - - src_bv = bio_iovec(src); - } + if (!src_iter.bi_size) { + src = src->bi_next; + if (!src) + break; - src_offset = src_bv->bv_offset; + src_iter = src->bi_iter; } - if (dst_offset == dst_bv->bv_offset + dst_bv->bv_len) { - dst_bv++; - if (dst_bv == bio_iovec_idx(dst, dst->bi_vcnt)) { - dst = dst->bi_next; - if (!dst) - break; - - dst_bv = bio_iovec(dst); - } + if (!dst_iter.bi_size) { + dst = dst->bi_next; + if (!dst) + break; - dst_offset = dst_bv->bv_offset; + dst_iter = dst->bi_iter; } - bytes = min(dst_bv->bv_offset + dst_bv->bv_len - dst_offset, - src_bv->bv_offset + src_bv->bv_len - src_offset); + src_bv = bio_iter_iovec(src, src_iter); + dst_bv = bio_iter_iovec(dst, dst_iter); - src_p = kmap_atomic(src_bv->bv_page); - dst_p = kmap_atomic(dst_bv->bv_page); + bytes = min(src_bv.bv_len, dst_bv.bv_len); - memcpy(dst_p + dst_offset, - src_p + src_offset, + src_p = kmap_atomic(src_bv.bv_page); + dst_p = kmap_atomic(dst_bv.bv_page); + + memcpy(dst_p + dst_bv.bv_offset, + src_p + src_bv.bv_offset, bytes); kunmap_atomic(dst_p); kunmap_atomic(src_p); - src_offset += bytes; - dst_offset += bytes; + bio_advance_iter(src, &src_iter, bytes); + bio_advance_iter(dst, &dst_iter, bytes); } } EXPORT_SYMBOL(bio_copy_data); struct bio_map_data { - struct bio_vec *iovecs; - struct sg_iovec *sgvecs; int nr_sgvecs; int is_our_pages; + struct sg_iovec sgvecs[]; }; static void bio_set_map_data(struct bio_map_data *bmd, struct bio *bio, struct sg_iovec *iov, int iov_count, int is_our_pages) { - memcpy(bmd->iovecs, bio->bi_io_vec, sizeof(struct bio_vec) * bio->bi_vcnt); memcpy(bmd->sgvecs, iov, sizeof(struct sg_iovec) * iov_count); bmd->nr_sgvecs = iov_count; bmd->is_our_pages = is_our_pages; bio->bi_private = bmd; } -static void bio_free_map_data(struct bio_map_data *bmd) -{ - kfree(bmd->iovecs); - kfree(bmd->sgvecs); - kfree(bmd); -} - static struct bio_map_data *bio_alloc_map_data(int nr_segs, unsigned int iov_count, gfp_t gfp_mask) { - struct bio_map_data *bmd; - if (iov_count > UIO_MAXIOV) return NULL; - bmd = kmalloc(sizeof(*bmd), gfp_mask); - if (!bmd) - return NULL; - - bmd->iovecs = kmalloc(sizeof(struct bio_vec) * nr_segs, gfp_mask); - if (!bmd->iovecs) { - kfree(bmd); - return NULL; - } - - bmd->sgvecs = kmalloc(sizeof(struct sg_iovec) * iov_count, gfp_mask); - if (bmd->sgvecs) - return bmd; - - kfree(bmd->iovecs); - kfree(bmd); - return NULL; + return kmalloc(sizeof(struct bio_map_data) + + sizeof(struct sg_iovec) * iov_count, gfp_mask); } -static int __bio_copy_iov(struct bio *bio, struct bio_vec *iovecs, - struct sg_iovec *iov, int iov_count, +static int __bio_copy_iov(struct bio *bio, struct sg_iovec *iov, int iov_count, int to_user, int from_user, int do_free_page) { int ret = 0, i; @@ -994,7 +1032,7 @@ static int __bio_copy_iov(struct bio *bio, struct bio_vec *iovecs, bio_for_each_segment_all(bvec, bio, i) { char *bv_addr = page_address(bvec->bv_page); - unsigned int bv_len = iovecs[i].bv_len; + unsigned int bv_len = bvec->bv_len; while (bv_len && iov_idx < iov_count) { unsigned int bytes; @@ -1054,14 +1092,14 @@ int bio_uncopy_user(struct bio *bio) * don't copy into a random user address space, just free. */ if (current->mm) - ret = __bio_copy_iov(bio, bmd->iovecs, bmd->sgvecs, - bmd->nr_sgvecs, bio_data_dir(bio) == READ, + ret = __bio_copy_iov(bio, bmd->sgvecs, bmd->nr_sgvecs, + bio_data_dir(bio) == READ, 0, bmd->is_our_pages); else if (bmd->is_our_pages) bio_for_each_segment_all(bvec, bio, i) __free_page(bvec->bv_page); } - bio_free_map_data(bmd); + kfree(bmd); bio_put(bio); return ret; } @@ -1175,7 +1213,7 @@ struct bio *bio_copy_user_iov(struct request_queue *q, */ if ((!write_to_vm && (!map_data || !map_data->null_mapped)) || (map_data && map_data->from_user)) { - ret = __bio_copy_iov(bio, bio->bi_io_vec, iov, iov_count, 0, 1, 0); + ret = __bio_copy_iov(bio, iov, iov_count, 0, 1, 0); if (ret) goto cleanup; } @@ -1189,7 +1227,7 @@ cleanup: bio_put(bio); out_bmd: - bio_free_map_data(bmd); + kfree(bmd); return ERR_PTR(ret); } @@ -1485,7 +1523,7 @@ struct bio *bio_map_kern(struct request_queue *q, void *data, unsigned int len, if (IS_ERR(bio)) return bio; - if (bio->bi_size == len) + if (bio->bi_iter.bi_size == len) return bio; /* @@ -1506,16 +1544,15 @@ static void bio_copy_kern_endio(struct bio *bio, int err) bio_for_each_segment_all(bvec, bio, i) { char *addr = page_address(bvec->bv_page); - int len = bmd->iovecs[i].bv_len; if (read) - memcpy(p, addr, len); + memcpy(p, addr, bvec->bv_len); __free_page(bvec->bv_page); - p += len; + p += bvec->bv_len; } - bio_free_map_data(bmd); + kfree(bmd); bio_put(bio); } @@ -1686,11 +1723,11 @@ void bio_check_pages_dirty(struct bio *bio) #if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE void bio_flush_dcache_pages(struct bio *bi) { - int i; - struct bio_vec *bvec; + struct bio_vec bvec; + struct bvec_iter iter; - bio_for_each_segment(bvec, bi, i) - flush_dcache_page(bvec->bv_page); + bio_for_each_segment(bvec, bi, iter) + flush_dcache_page(bvec.bv_page); } EXPORT_SYMBOL(bio_flush_dcache_pages); #endif @@ -1711,96 +1748,86 @@ EXPORT_SYMBOL(bio_flush_dcache_pages); **/ void bio_endio(struct bio *bio, int error) { - if (error) - clear_bit(BIO_UPTODATE, &bio->bi_flags); - else if (!test_bit(BIO_UPTODATE, &bio->bi_flags)) - error = -EIO; + while (bio) { + BUG_ON(atomic_read(&bio->bi_remaining) <= 0); - if (bio->bi_end_io) - bio->bi_end_io(bio, error); -} -EXPORT_SYMBOL(bio_endio); + if (error) + clear_bit(BIO_UPTODATE, &bio->bi_flags); + else if (!test_bit(BIO_UPTODATE, &bio->bi_flags)) + error = -EIO; -void bio_pair_release(struct bio_pair *bp) -{ - if (atomic_dec_and_test(&bp->cnt)) { - struct bio *master = bp->bio1.bi_private; + if (!atomic_dec_and_test(&bio->bi_remaining)) + return; - bio_endio(master, bp->error); - mempool_free(bp, bp->bio2.bi_private); + /* + * Need to have a real endio function for chained bios, + * otherwise various corner cases will break (like stacking + * block devices that save/restore bi_end_io) - however, we want + * to avoid unbounded recursion and blowing the stack. Tail call + * optimization would handle this, but compiling with frame + * pointers also disables gcc's sibling call optimization. + */ + if (bio->bi_end_io == bio_chain_endio) { + struct bio *parent = bio->bi_private; + bio_put(bio); + bio = parent; + } else { + if (bio->bi_end_io) + bio->bi_end_io(bio, error); + bio = NULL; + } } } -EXPORT_SYMBOL(bio_pair_release); - -static void bio_pair_end_1(struct bio *bi, int err) -{ - struct bio_pair *bp = container_of(bi, struct bio_pair, bio1); - - if (err) - bp->error = err; - - bio_pair_release(bp); -} +EXPORT_SYMBOL(bio_endio); -static void bio_pair_end_2(struct bio *bi, int err) +/** + * bio_endio_nodec - end I/O on a bio, without decrementing bi_remaining + * @bio: bio + * @error: error, if any + * + * For code that has saved and restored bi_end_io; thing hard before using this + * function, probably you should've cloned the entire bio. + **/ +void bio_endio_nodec(struct bio *bio, int error) { - struct bio_pair *bp = container_of(bi, struct bio_pair, bio2); - - if (err) - bp->error = err; - - bio_pair_release(bp); + atomic_inc(&bio->bi_remaining); + bio_endio(bio, error); } +EXPORT_SYMBOL(bio_endio_nodec); -/* - * split a bio - only worry about a bio with a single page in its iovec +/** + * bio_split - split a bio + * @bio: bio to split + * @sectors: number of sectors to split from the front of @bio + * @gfp: gfp mask + * @bs: bio set to allocate from + * + * Allocates and returns a new bio which represents @sectors from the start of + * @bio, and updates @bio to represent the remaining sectors. + * + * The newly allocated bio will point to @bio's bi_io_vec; it is the caller's + * responsibility to ensure that @bio is not freed before the split. */ -struct bio_pair *bio_split(struct bio *bi, int first_sectors) +struct bio *bio_split(struct bio *bio, int sectors, + gfp_t gfp, struct bio_set *bs) { - struct bio_pair *bp = mempool_alloc(bio_split_pool, GFP_NOIO); - - if (!bp) - return bp; - - trace_block_split(bdev_get_queue(bi->bi_bdev), bi, - bi->bi_sector + first_sectors); - - BUG_ON(bio_segments(bi) > 1); - atomic_set(&bp->cnt, 3); - bp->error = 0; - bp->bio1 = *bi; - bp->bio2 = *bi; - bp->bio2.bi_sector += first_sectors; - bp->bio2.bi_size -= first_sectors << 9; - bp->bio1.bi_size = first_sectors << 9; - - if (bi->bi_vcnt != 0) { - bp->bv1 = *bio_iovec(bi); - bp->bv2 = *bio_iovec(bi); - - if (bio_is_rw(bi)) { - bp->bv2.bv_offset += first_sectors << 9; - bp->bv2.bv_len -= first_sectors << 9; - bp->bv1.bv_len = first_sectors << 9; - } + struct bio *split = NULL; - bp->bio1.bi_io_vec = &bp->bv1; - bp->bio2.bi_io_vec = &bp->bv2; + BUG_ON(sectors <= 0); + BUG_ON(sectors >= bio_sectors(bio)); - bp->bio1.bi_max_vecs = 1; - bp->bio2.bi_max_vecs = 1; - } + split = bio_clone_fast(bio, gfp, bs); + if (!split) + return NULL; - bp->bio1.bi_end_io = bio_pair_end_1; - bp->bio2.bi_end_io = bio_pair_end_2; + split->bi_iter.bi_size = sectors << 9; - bp->bio1.bi_private = bi; - bp->bio2.bi_private = bio_split_pool; + if (bio_integrity(split)) + bio_integrity_trim(split, 0, sectors); - if (bio_integrity(bi)) - bio_integrity_split(bi, bp, first_sectors); + bio_advance(bio, split->bi_iter.bi_size); - return bp; + return split; } EXPORT_SYMBOL(bio_split); @@ -1814,80 +1841,20 @@ void bio_trim(struct bio *bio, int offset, int size) { /* 'bio' is a cloned bio which we need to trim to match * the given offset and size. - * This requires adjusting bi_sector, bi_size, and bi_io_vec */ - int i; - struct bio_vec *bvec; - int sofar = 0; size <<= 9; - if (offset == 0 && size == bio->bi_size) + if (offset == 0 && size == bio->bi_iter.bi_size) return; clear_bit(BIO_SEG_VALID, &bio->bi_flags); bio_advance(bio, offset << 9); - bio->bi_size = size; - - /* avoid any complications with bi_idx being non-zero*/ - if (bio->bi_idx) { - memmove(bio->bi_io_vec, bio->bi_io_vec+bio->bi_idx, - (bio->bi_vcnt - bio->bi_idx) * sizeof(struct bio_vec)); - bio->bi_vcnt -= bio->bi_idx; - bio->bi_idx = 0; - } - /* Make sure vcnt and last bv are not too big */ - bio_for_each_segment(bvec, bio, i) { - if (sofar + bvec->bv_len > size) - bvec->bv_len = size - sofar; - if (bvec->bv_len == 0) { - bio->bi_vcnt = i; - break; - } - sofar += bvec->bv_len; - } + bio->bi_iter.bi_size = size; } EXPORT_SYMBOL_GPL(bio_trim); -/** - * bio_sector_offset - Find hardware sector offset in bio - * @bio: bio to inspect - * @index: bio_vec index - * @offset: offset in bv_page - * - * Return the number of hardware sectors between beginning of bio - * and an end point indicated by a bio_vec index and an offset - * within that vector's page. - */ -sector_t bio_sector_offset(struct bio *bio, unsigned short index, - unsigned int offset) -{ - unsigned int sector_sz; - struct bio_vec *bv; - sector_t sectors; - int i; - - sector_sz = queue_logical_block_size(bio->bi_bdev->bd_disk->queue); - sectors = 0; - - if (index >= bio->bi_idx) - index = bio->bi_vcnt - 1; - - bio_for_each_segment_all(bv, bio, i) { - if (i == index) { - if (offset > bv->bv_offset) - sectors += (offset - bv->bv_offset) / sector_sz; - break; - } - - sectors += bv->bv_len / sector_sz; - } - - return sectors; -} -EXPORT_SYMBOL(bio_sector_offset); - /* * create memory pools for biovec's in a bio_set. * use the global biovec slabs created for general use. @@ -2002,7 +1969,7 @@ int bio_associate_current(struct bio *bio) /* associate blkcg if exists */ rcu_read_lock(); - css = task_css(current, blkio_subsys_id); + css = task_css(current, blkio_cgrp_id); if (css && css_tryget(css)) bio->bi_css = css; rcu_read_unlock(); @@ -2065,11 +2032,6 @@ static int __init init_bio(void) if (bioset_integrity_create(fs_bio_set, BIO_POOL_SIZE)) panic("bio: can't create integrity pool\n"); - bio_split_pool = mempool_create_kmalloc_pool(BIO_SPLIT_ENTRIES, - sizeof(struct bio_pair)); - if (!bio_split_pool) - panic("bio: can't create split pool\n"); - return 0; } subsys_initcall(init_bio); diff --git a/fs/block_dev.c b/fs/block_dev.c index 1e86823a9cbd..ba0d2b05bb78 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -83,7 +83,7 @@ void kill_bdev(struct block_device *bdev) { struct address_space *mapping = bdev->bd_inode->i_mapping; - if (mapping->nrpages == 0) + if (mapping->nrpages == 0 && mapping->nrshadows == 0) return; invalidate_bh_lrus(); @@ -419,7 +419,7 @@ static void bdev_evict_inode(struct inode *inode) { struct block_device *bdev = &BDEV_I(inode)->bdev; struct list_head *p; - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); invalidate_inode_buffers(inode); /* is it needed here? */ clear_inode(inode); spin_lock(&bdev_lock); @@ -1523,7 +1523,7 @@ ssize_t blkdev_aio_write(struct kiocb *iocb, const struct iovec *iov, ssize_t err; err = generic_write_sync(file, pos, ret); - if (err < 0 && ret > 0) + if (err < 0) ret = err; } blk_finish_plug(&plug); diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c index 460f36bae672..ff9b3995d453 100644 --- a/fs/btrfs/acl.c +++ b/fs/btrfs/acl.c @@ -35,13 +35,6 @@ struct posix_acl *btrfs_get_acl(struct inode *inode, int type) char *value = NULL; struct posix_acl *acl; - if (!IS_POSIXACL(inode)) - return NULL; - - acl = get_cached_acl(inode, type); - if (acl != ACL_NOT_CACHED) - return acl; - switch (type) { case ACL_TYPE_ACCESS: name = POSIX_ACL_XATTR_ACCESS; @@ -76,31 +69,10 @@ struct posix_acl *btrfs_get_acl(struct inode *inode, int type) return acl; } -static int btrfs_xattr_acl_get(struct dentry *dentry, const char *name, - void *value, size_t size, int type) -{ - struct posix_acl *acl; - int ret = 0; - - if (!IS_POSIXACL(dentry->d_inode)) - return -EOPNOTSUPP; - - acl = btrfs_get_acl(dentry->d_inode, type); - - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl == NULL) - return -ENODATA; - ret = posix_acl_to_xattr(&init_user_ns, acl, value, size); - posix_acl_release(acl); - - return ret; -} - /* * Needs to be called with fs_mutex held */ -static int btrfs_set_acl(struct btrfs_trans_handle *trans, +static int __btrfs_set_acl(struct btrfs_trans_handle *trans, struct inode *inode, struct posix_acl *acl, int type) { int ret, size = 0; @@ -158,35 +130,9 @@ out: return ret; } -static int btrfs_xattr_acl_set(struct dentry *dentry, const char *name, - const void *value, size_t size, int flags, int type) +int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type) { - int ret; - struct posix_acl *acl = NULL; - - if (!inode_owner_or_capable(dentry->d_inode)) - return -EPERM; - - if (!IS_POSIXACL(dentry->d_inode)) - return -EOPNOTSUPP; - - if (value) { - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (IS_ERR(acl)) - return PTR_ERR(acl); - - if (acl) { - ret = posix_acl_valid(acl); - if (ret) - goto out; - } - } - - ret = btrfs_set_acl(NULL, dentry->d_inode, acl, type); -out: - posix_acl_release(acl); - - return ret; + return __btrfs_set_acl(NULL, inode, acl, type); } /* @@ -197,78 +143,31 @@ out: int btrfs_init_acl(struct btrfs_trans_handle *trans, struct inode *inode, struct inode *dir) { - struct posix_acl *acl = NULL; + struct posix_acl *default_acl, *acl; int ret = 0; /* this happens with subvols */ if (!dir) return 0; - if (!S_ISLNK(inode->i_mode)) { - if (IS_POSIXACL(dir)) { - acl = btrfs_get_acl(dir, ACL_TYPE_DEFAULT); - if (IS_ERR(acl)) - return PTR_ERR(acl); - } + ret = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl); + if (ret) + return ret; - if (!acl) - inode->i_mode &= ~current_umask(); + if (default_acl) { + ret = __btrfs_set_acl(trans, inode, default_acl, + ACL_TYPE_DEFAULT); + posix_acl_release(default_acl); } - if (IS_POSIXACL(dir) && acl) { - if (S_ISDIR(inode->i_mode)) { - ret = btrfs_set_acl(trans, inode, acl, - ACL_TYPE_DEFAULT); - if (ret) - goto failed; - } - ret = posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); - if (ret < 0) - return ret; - if (ret > 0) /* we need an acl */ - ret = btrfs_set_acl(trans, inode, acl, ACL_TYPE_ACCESS); - } else { - cache_no_acl(inode); + if (acl) { + if (!ret) + ret = __btrfs_set_acl(trans, inode, acl, + ACL_TYPE_ACCESS); + posix_acl_release(acl); } -failed: - posix_acl_release(acl); - - return ret; -} - -int btrfs_acl_chmod(struct inode *inode) -{ - struct posix_acl *acl; - int ret = 0; - - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - - if (!IS_POSIXACL(inode)) - return 0; - acl = btrfs_get_acl(inode, ACL_TYPE_ACCESS); - if (IS_ERR_OR_NULL(acl)) - return PTR_ERR(acl); - - ret = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); - if (ret) - return ret; - ret = btrfs_set_acl(NULL, inode, acl, ACL_TYPE_ACCESS); - posix_acl_release(acl); + if (!default_acl && !acl) + cache_no_acl(inode); return ret; } - -const struct xattr_handler btrfs_xattr_acl_default_handler = { - .prefix = POSIX_ACL_XATTR_DEFAULT, - .flags = ACL_TYPE_DEFAULT, - .get = btrfs_xattr_acl_get, - .set = btrfs_xattr_acl_set, -}; - -const struct xattr_handler btrfs_xattr_acl_access_handler = { - .prefix = POSIX_ACL_XATTR_ACCESS, - .flags = ACL_TYPE_ACCESS, - .get = btrfs_xattr_acl_get, - .set = btrfs_xattr_acl_set, -}; diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c index 39bfd56a1f26..0e8388e72d8d 100644 --- a/fs/btrfs/check-integrity.c +++ b/fs/btrfs/check-integrity.c @@ -1699,7 +1699,7 @@ static int btrfsic_read_block(struct btrfsic_state *state, return -1; } bio->bi_bdev = block_ctx->dev->bdev; - bio->bi_sector = dev_bytenr >> 9; + bio->bi_iter.bi_sector = dev_bytenr >> 9; for (j = i; j < num_pages; j++) { ret = bio_add_page(bio, block_ctx->pagev[j], @@ -3017,7 +3017,7 @@ static void __btrfsic_submit_bio(int rw, struct bio *bio) int bio_is_patched; char **mapped_datav; - dev_bytenr = 512 * bio->bi_sector; + dev_bytenr = 512 * bio->bi_iter.bi_sector; bio_is_patched = 0; if (dev_state->state->print_mask & BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH) @@ -3025,8 +3025,8 @@ static void __btrfsic_submit_bio(int rw, struct bio *bio) "submit_bio(rw=0x%x, bi_vcnt=%u," " bi_sector=%llu (bytenr %llu), bi_bdev=%p)\n", rw, bio->bi_vcnt, - (unsigned long long)bio->bi_sector, dev_bytenr, - bio->bi_bdev); + (unsigned long long)bio->bi_iter.bi_sector, + dev_bytenr, bio->bi_bdev); mapped_datav = kmalloc(sizeof(*mapped_datav) * bio->bi_vcnt, GFP_NOFS); diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index ed1ff1cb1017..d43c544d3b68 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -171,7 +171,8 @@ static void end_compressed_bio_read(struct bio *bio, int err) goto out; inode = cb->inode; - ret = check_compressed_csum(inode, cb, (u64)bio->bi_sector << 9); + ret = check_compressed_csum(inode, cb, + (u64)bio->bi_iter.bi_sector << 9); if (ret) goto csum_failed; @@ -200,18 +201,16 @@ csum_failed: if (cb->errors) { bio_io_error(cb->orig_bio); } else { - int bio_index = 0; - struct bio_vec *bvec = cb->orig_bio->bi_io_vec; + int i; + struct bio_vec *bvec; /* * we have verified the checksum already, set page * checked so the end_io handlers know about it */ - while (bio_index < cb->orig_bio->bi_vcnt) { + bio_for_each_segment_all(bvec, cb->orig_bio, i) SetPageChecked(bvec->bv_page); - bvec++; - bio_index++; - } + bio_endio(cb->orig_bio, 0); } @@ -371,7 +370,7 @@ int btrfs_submit_compressed_write(struct inode *inode, u64 start, for (pg_index = 0; pg_index < cb->nr_pages; pg_index++) { page = compressed_pages[pg_index]; page->mapping = inode->i_mapping; - if (bio->bi_size) + if (bio->bi_iter.bi_size) ret = io_tree->ops->merge_bio_hook(WRITE, page, 0, PAGE_CACHE_SIZE, bio, 0); @@ -473,7 +472,7 @@ static noinline int add_ra_bio_pages(struct inode *inode, rcu_read_lock(); page = radix_tree_lookup(&mapping->page_tree, pg_index); rcu_read_unlock(); - if (page) { + if (page && !radix_tree_exceptional_entry(page)) { misses++; if (misses > 4) break; @@ -506,7 +505,7 @@ static noinline int add_ra_bio_pages(struct inode *inode, if (!em || last_offset < em->start || (last_offset + PAGE_CACHE_SIZE > extent_map_end(em)) || - (em->block_start >> 9) != cb->orig_bio->bi_sector) { + (em->block_start >> 9) != cb->orig_bio->bi_iter.bi_sector) { free_extent_map(em); unlock_extent(tree, last_offset, end); unlock_page(page); @@ -552,7 +551,7 @@ next: * in it. We don't actually do IO on those pages but allocate new ones * to hold the compressed pages on disk. * - * bio->bi_sector points to the compressed extent on disk + * bio->bi_iter.bi_sector points to the compressed extent on disk * bio->bi_io_vec points to all of the inode pages * bio->bi_vcnt is a count of pages * @@ -573,7 +572,7 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio, struct page *page; struct block_device *bdev; struct bio *comp_bio; - u64 cur_disk_byte = (u64)bio->bi_sector << 9; + u64 cur_disk_byte = (u64)bio->bi_iter.bi_sector << 9; u64 em_len; u64 em_start; struct extent_map *em; @@ -659,7 +658,7 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio, page->mapping = inode->i_mapping; page->index = em_start >> PAGE_CACHE_SHIFT; - if (comp_bio->bi_size) + if (comp_bio->bi_iter.bi_size) ret = tree->ops->merge_bio_hook(READ, page, 0, PAGE_CACHE_SIZE, comp_bio, 0); @@ -687,8 +686,8 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio, comp_bio, sums); BUG_ON(ret); /* -ENOMEM */ } - sums += (comp_bio->bi_size + root->sectorsize - 1) / - root->sectorsize; + sums += (comp_bio->bi_iter.bi_size + + root->sectorsize - 1) / root->sectorsize; ret = btrfs_map_bio(root, READ, comp_bio, mirror_num, 0); diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index ad1a5943a923..4c48df572bd6 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -3992,20 +3992,17 @@ do { \ /* acl.c */ #ifdef CONFIG_BTRFS_FS_POSIX_ACL struct posix_acl *btrfs_get_acl(struct inode *inode, int type); +int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); int btrfs_init_acl(struct btrfs_trans_handle *trans, struct inode *inode, struct inode *dir); -int btrfs_acl_chmod(struct inode *inode); #else #define btrfs_get_acl NULL +#define btrfs_set_acl NULL static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, struct inode *inode, struct inode *dir) { return 0; } -static inline int btrfs_acl_chmod(struct inode *inode) -{ - return 0; -} #endif /* relocation.c */ diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 6d1ac7d46f81..029d46c2e170 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -854,20 +854,17 @@ int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode, static int btree_csum_one_bio(struct bio *bio) { - struct bio_vec *bvec = bio->bi_io_vec; - int bio_index = 0; + struct bio_vec *bvec; struct btrfs_root *root; - int ret = 0; + int i, ret = 0; - WARN_ON(bio->bi_vcnt <= 0); - while (bio_index < bio->bi_vcnt) { + bio_for_each_segment_all(bvec, bio, i) { root = BTRFS_I(bvec->bv_page->mapping->host)->root; ret = csum_dirty_buffer(root, bvec->bv_page); if (ret) break; - bio_index++; - bvec++; } + return ret; } @@ -1738,7 +1735,7 @@ static void end_workqueue_fn(struct btrfs_work *work) bio->bi_private = end_io_wq->private; bio->bi_end_io = end_io_wq->end_io; kfree(end_io_wq); - bio_endio(bio, error); + bio_endio_nodec(bio, error); } static int cleaner_kthread(void *arg) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 0c4389634985..3955e475ceec 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2033,7 +2033,7 @@ int repair_io_failure(struct btrfs_fs_info *fs_info, u64 start, bio = btrfs_io_bio_alloc(GFP_NOFS, 1); if (!bio) return -EIO; - bio->bi_size = 0; + bio->bi_iter.bi_size = 0; map_length = length; ret = btrfs_map_block(fs_info, WRITE, logical, @@ -2044,7 +2044,7 @@ int repair_io_failure(struct btrfs_fs_info *fs_info, u64 start, } BUG_ON(mirror_num != bbio->mirror_num); sector = bbio->stripes[mirror_num-1].physical >> 9; - bio->bi_sector = sector; + bio->bi_iter.bi_sector = sector; dev = bbio->stripes[mirror_num-1].dev; kfree(bbio); if (!dev || !dev->bdev || !dev->writeable) { @@ -2318,9 +2318,9 @@ static int bio_readpage_error(struct bio *failed_bio, u64 phy_offset, return -EIO; } bio->bi_end_io = failed_bio->bi_end_io; - bio->bi_sector = failrec->logical >> 9; + bio->bi_iter.bi_sector = failrec->logical >> 9; bio->bi_bdev = BTRFS_I(inode)->root->fs_info->fs_devices->latest_bdev; - bio->bi_size = 0; + bio->bi_iter.bi_size = 0; btrfs_failed_bio = btrfs_io_bio(failed_bio); if (btrfs_failed_bio->csum) { @@ -2382,11 +2382,12 @@ int end_extent_writepage(struct page *page, int err, u64 start, u64 end) */ static void end_bio_extent_writepage(struct bio *bio, int err) { - struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1; + struct bio_vec *bvec; u64 start; u64 end; + int i; - do { + bio_for_each_segment_all(bvec, bio, i) { struct page *page = bvec->bv_page; /* We always issue full-page reads, but if some block @@ -2409,14 +2410,11 @@ static void end_bio_extent_writepage(struct bio *bio, int err) start = page_offset(page); end = start + bvec->bv_offset + bvec->bv_len - 1; - if (--bvec >= bio->bi_io_vec) - prefetchw(&bvec->bv_page->flags); - if (end_extent_writepage(page, err, start, end)) continue; end_page_writeback(page); - } while (bvec >= bio->bi_io_vec); + } bio_put(bio); } @@ -2446,9 +2444,8 @@ endio_readpage_release_extent(struct extent_io_tree *tree, u64 start, u64 len, */ static void end_bio_extent_readpage(struct bio *bio, int err) { + struct bio_vec *bvec; int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); - struct bio_vec *bvec_end = bio->bi_io_vec + bio->bi_vcnt - 1; - struct bio_vec *bvec = bio->bi_io_vec; struct btrfs_io_bio *io_bio = btrfs_io_bio(bio); struct extent_io_tree *tree; u64 offset = 0; @@ -2459,16 +2456,17 @@ static void end_bio_extent_readpage(struct bio *bio, int err) u64 extent_len = 0; int mirror; int ret; + int i; if (err) uptodate = 0; - do { + bio_for_each_segment_all(bvec, bio, i) { struct page *page = bvec->bv_page; struct inode *inode = page->mapping->host; pr_debug("end_bio_extent_readpage: bi_sector=%llu, err=%d, " - "mirror=%lu\n", (u64)bio->bi_sector, err, + "mirror=%lu\n", (u64)bio->bi_iter.bi_sector, err, io_bio->mirror_num); tree = &BTRFS_I(inode)->io_tree; @@ -2493,9 +2491,6 @@ static void end_bio_extent_readpage(struct bio *bio, int err) end = start + bvec->bv_offset + bvec->bv_len - 1; len = bvec->bv_len; - if (++bvec <= bvec_end) - prefetchw(&bvec->bv_page->flags); - mirror = io_bio->mirror_num; if (likely(uptodate && tree->ops && tree->ops->readpage_end_io_hook)) { @@ -2576,7 +2571,7 @@ readpage_ok: extent_start = start; extent_len = end + 1 - start; } - } while (bvec <= bvec_end); + } if (extent_len) endio_readpage_release_extent(tree, extent_start, extent_len, @@ -2607,9 +2602,8 @@ btrfs_bio_alloc(struct block_device *bdev, u64 first_sector, int nr_vecs, } if (bio) { - bio->bi_size = 0; bio->bi_bdev = bdev; - bio->bi_sector = first_sector; + bio->bi_iter.bi_sector = first_sector; btrfs_bio = btrfs_io_bio(bio); btrfs_bio->csum = NULL; btrfs_bio->csum_allocated = NULL; @@ -2703,7 +2697,7 @@ static int submit_extent_page(int rw, struct extent_io_tree *tree, if (bio_ret && *bio_ret) { bio = *bio_ret; if (old_compressed) - contig = bio->bi_sector == sector; + contig = bio->bi_iter.bi_sector == sector; else contig = bio_end_sector(bio) == sector; @@ -3470,20 +3464,18 @@ static void end_extent_buffer_writeback(struct extent_buffer *eb) static void end_bio_extent_buffer_writepage(struct bio *bio, int err) { - int uptodate = err == 0; - struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1; + struct bio_vec *bvec; struct extent_buffer *eb; - int done; + int i, done; - do { + bio_for_each_segment_all(bvec, bio, i) { struct page *page = bvec->bv_page; - bvec--; eb = (struct extent_buffer *)page->private; BUG_ON(!eb); done = atomic_dec_and_test(&eb->io_pages); - if (!uptodate || test_bit(EXTENT_BUFFER_IOERR, &eb->bflags)) { + if (err || test_bit(EXTENT_BUFFER_IOERR, &eb->bflags)) { set_bit(EXTENT_BUFFER_IOERR, &eb->bflags); ClearPageUptodate(page); SetPageError(page); @@ -3495,10 +3487,9 @@ static void end_bio_extent_buffer_writepage(struct bio *bio, int err) continue; end_extent_buffer_writeback(eb); - } while (bvec >= bio->bi_io_vec); + } bio_put(bio); - } static int write_one_eb(struct extent_buffer *eb, diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index 9d846588f722..127555b29f58 100644 --- a/fs/btrfs/file-item.c +++ b/fs/btrfs/file-item.c @@ -182,7 +182,7 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root, if (!path) return -ENOMEM; - nblocks = bio->bi_size >> inode->i_sb->s_blocksize_bits; + nblocks = bio->bi_iter.bi_size >> inode->i_sb->s_blocksize_bits; if (!dst) { if (nblocks * csum_size > BTRFS_BIO_INLINE_CSUM_SIZE) { btrfs_bio->csum_allocated = kmalloc(nblocks * csum_size, @@ -201,7 +201,7 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root, csum = (u8 *)dst; } - if (bio->bi_size > PAGE_CACHE_SIZE * 8) + if (bio->bi_iter.bi_size > PAGE_CACHE_SIZE * 8) path->reada = 2; WARN_ON(bio->bi_vcnt <= 0); @@ -217,7 +217,7 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root, path->skip_locking = 1; } - disk_bytenr = (u64)bio->bi_sector << 9; + disk_bytenr = (u64)bio->bi_iter.bi_sector << 9; if (dio) offset = logical_offset; while (bio_index < bio->bi_vcnt) { @@ -302,7 +302,7 @@ int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, struct btrfs_dio_private *dip, struct bio *bio, u64 offset) { - int len = (bio->bi_sector << 9) - dip->disk_bytenr; + int len = (bio->bi_iter.bi_sector << 9) - dip->disk_bytenr; u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy); int ret; @@ -447,11 +447,12 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, u64 offset; WARN_ON(bio->bi_vcnt <= 0); - sums = kzalloc(btrfs_ordered_sum_size(root, bio->bi_size), GFP_NOFS); + sums = kzalloc(btrfs_ordered_sum_size(root, bio->bi_iter.bi_size), + GFP_NOFS); if (!sums) return -ENOMEM; - sums->len = bio->bi_size; + sums->len = bio->bi_iter.bi_size; INIT_LIST_HEAD(&sums->list); if (contig) @@ -461,7 +462,7 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, ordered = btrfs_lookup_ordered_extent(inode, offset); BUG_ON(!ordered); /* Logic error */ - sums->bytenr = (u64)bio->bi_sector << 9; + sums->bytenr = (u64)bio->bi_iter.bi_sector << 9; index = 0; while (bio_index < bio->bi_vcnt) { @@ -476,7 +477,7 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, btrfs_add_ordered_sum(inode, ordered, sums); btrfs_put_ordered_extent(ordered); - bytes_left = bio->bi_size - total_bytes; + bytes_left = bio->bi_iter.bi_size - total_bytes; sums = kzalloc(btrfs_ordered_sum_size(root, bytes_left), GFP_NOFS); @@ -484,7 +485,7 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, sums->len = bytes_left; ordered = btrfs_lookup_ordered_extent(inode, offset); BUG_ON(!ordered); /* Logic error */ - sums->bytenr = ((u64)bio->bi_sector << 9) + + sums->bytenr = ((u64)bio->bi_iter.bi_sector << 9) + total_bytes; index = 0; } diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 23f6a9d9f104..c5998477fe60 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1829,7 +1829,7 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb, BTRFS_I(inode)->last_sub_trans = root->log_transid; if (num_written > 0) { err = generic_write_sync(file, pos, num_written); - if (err < 0 && num_written > 0) + if (err < 0) num_written = err; } @@ -2028,6 +2028,7 @@ out: static const struct vm_operations_struct btrfs_file_vm_ops = { .fault = filemap_fault, + .map_pages = filemap_map_pages, .page_mkwrite = btrfs_page_mkwrite, .remap_pages = generic_file_remap_pages, }; diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 0c0bb450cbba..5f805bc944fa 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -1623,7 +1623,7 @@ int btrfs_merge_bio_hook(int rw, struct page *page, unsigned long offset, unsigned long bio_flags) { struct btrfs_root *root = BTRFS_I(page->mapping->host)->root; - u64 logical = (u64)bio->bi_sector << 9; + u64 logical = (u64)bio->bi_iter.bi_sector << 9; u64 length = 0; u64 map_length; int ret; @@ -1631,7 +1631,7 @@ int btrfs_merge_bio_hook(int rw, struct page *page, unsigned long offset, if (bio_flags & EXTENT_BIO_COMPRESSED) return 0; - length = bio->bi_size; + length = bio->bi_iter.bi_size; map_length = length; ret = btrfs_map_block(root->fs_info, rw, logical, &map_length, NULL, 0); @@ -4484,8 +4484,12 @@ static int btrfs_setsize(struct inode *inode, struct iattr *attr) * these flags set. For all other operations the VFS set these flags * explicitly if it wants a timestamp update. */ - if (newsize != oldsize && (!(mask & (ATTR_CTIME | ATTR_MTIME)))) - inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb); + if (newsize != oldsize) { + inode_inc_iversion(inode); + if (!(mask & (ATTR_CTIME | ATTR_MTIME))) + inode->i_ctime = inode->i_mtime = + current_fs_time(inode->i_sb); + } if (newsize > oldsize) { truncate_pagecache(inode, newsize); @@ -4594,7 +4598,7 @@ static int btrfs_setattr(struct dentry *dentry, struct iattr *attr) err = btrfs_dirty_inode(inode); if (!err && attr->ia_valid & ATTR_MODE) - err = btrfs_acl_chmod(inode); + err = posix_acl_chmod(inode, inode->i_mode); } return err; @@ -4619,7 +4623,7 @@ static void evict_inode_truncate_pages(struct inode *inode) struct rb_node *node; ASSERT(inode->i_state & I_FREEING); - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); write_lock(&map_tree->lock); while (!RB_EMPTY_ROOT(&map_tree->map)) { @@ -7000,17 +7004,16 @@ unlock_err: static void btrfs_endio_direct_read(struct bio *bio, int err) { struct btrfs_dio_private *dip = bio->bi_private; - struct bio_vec *bvec_end = bio->bi_io_vec + bio->bi_vcnt - 1; - struct bio_vec *bvec = bio->bi_io_vec; + struct bio_vec *bvec; struct inode *inode = dip->inode; struct btrfs_root *root = BTRFS_I(inode)->root; struct bio *dio_bio; u32 *csums = (u32 *)dip->csum; - int index = 0; u64 start; + int i; start = dip->logical_offset; - do { + bio_for_each_segment_all(bvec, bio, i) { if (!(BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM)) { struct page *page = bvec->bv_page; char *kaddr; @@ -7026,18 +7029,16 @@ static void btrfs_endio_direct_read(struct bio *bio, int err) local_irq_restore(flags); flush_dcache_page(bvec->bv_page); - if (csum != csums[index]) { + if (csum != csums[i]) { btrfs_err(root->fs_info, "csum failed ino %llu off %llu csum %u expected csum %u", btrfs_ino(inode), start, csum, - csums[index]); + csums[i]); err = -EIO; } } start += bvec->bv_len; - bvec++; - index++; - } while (bvec <= bvec_end); + } unlock_extent(&BTRFS_I(inode)->io_tree, dip->logical_offset, dip->logical_offset + dip->bytes - 1); @@ -7117,7 +7118,8 @@ static void btrfs_end_dio_bio(struct bio *bio, int err) btrfs_err(BTRFS_I(dip->inode)->root->fs_info, "direct IO failed ino %llu rw %lu sector %#Lx len %u err no %d", btrfs_ino(dip->inode), bio->bi_rw, - (unsigned long long)bio->bi_sector, bio->bi_size, err); + (unsigned long long)bio->bi_iter.bi_sector, + bio->bi_iter.bi_size, err); dip->errors = 1; /* @@ -7208,7 +7210,7 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip, struct bio *bio; struct bio *orig_bio = dip->orig_bio; struct bio_vec *bvec = orig_bio->bi_io_vec; - u64 start_sector = orig_bio->bi_sector; + u64 start_sector = orig_bio->bi_iter.bi_sector; u64 file_offset = dip->logical_offset; u64 submit_len = 0; u64 map_length; @@ -7216,7 +7218,7 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip, int ret = 0; int async_submit = 0; - map_length = orig_bio->bi_size; + map_length = orig_bio->bi_iter.bi_size; ret = btrfs_map_block(root->fs_info, rw, start_sector << 9, &map_length, NULL, 0); if (ret) { @@ -7224,7 +7226,7 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip, return -EIO; } - if (map_length >= orig_bio->bi_size) { + if (map_length >= orig_bio->bi_iter.bi_size) { bio = orig_bio; goto submit; } @@ -7276,7 +7278,7 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip, bio->bi_private = dip; bio->bi_end_io = btrfs_end_dio_bio; - map_length = orig_bio->bi_size; + map_length = orig_bio->bi_iter.bi_size; ret = btrfs_map_block(root->fs_info, rw, start_sector << 9, &map_length, NULL, 0); @@ -7334,7 +7336,8 @@ static void btrfs_submit_direct(int rw, struct bio *dio_bio, if (!skip_sum && !write) { csum_size = btrfs_super_csum_size(root->fs_info->super_copy); - sum_len = dio_bio->bi_size >> inode->i_sb->s_blocksize_bits; + sum_len = dio_bio->bi_iter.bi_size >> + inode->i_sb->s_blocksize_bits; sum_len *= csum_size; } else { sum_len = 0; @@ -7349,8 +7352,8 @@ static void btrfs_submit_direct(int rw, struct bio *dio_bio, dip->private = dio_bio->bi_private; dip->inode = inode; dip->logical_offset = file_offset; - dip->bytes = dio_bio->bi_size; - dip->disk_bytenr = (u64)dio_bio->bi_sector << 9; + dip->bytes = dio_bio->bi_iter.bi_size; + dip->disk_bytenr = (u64)dio_bio->bi_iter.bi_sector << 9; io_bio->bi_private = dip; dip->errors = 0; dip->orig_bio = io_bio; @@ -8904,12 +8907,14 @@ static const struct inode_operations btrfs_dir_inode_operations = { .removexattr = btrfs_removexattr, .permission = btrfs_permission, .get_acl = btrfs_get_acl, + .set_acl = btrfs_set_acl, .update_time = btrfs_update_time, }; static const struct inode_operations btrfs_dir_ro_inode_operations = { .lookup = btrfs_lookup, .permission = btrfs_permission, .get_acl = btrfs_get_acl, + .set_acl = btrfs_set_acl, .update_time = btrfs_update_time, }; @@ -8979,6 +8984,7 @@ static const struct inode_operations btrfs_file_inode_operations = { .permission = btrfs_permission, .fiemap = btrfs_fiemap, .get_acl = btrfs_get_acl, + .set_acl = btrfs_set_acl, .update_time = btrfs_update_time, }; static const struct inode_operations btrfs_special_inode_operations = { @@ -8990,6 +8996,7 @@ static const struct inode_operations btrfs_special_inode_operations = { .listxattr = btrfs_listxattr, .removexattr = btrfs_removexattr, .get_acl = btrfs_get_acl, + .set_acl = btrfs_set_acl, .update_time = btrfs_update_time, }; static const struct inode_operations btrfs_symlink_inode_operations = { @@ -9003,7 +9010,6 @@ static const struct inode_operations btrfs_symlink_inode_operations = { .getxattr = btrfs_getxattr, .listxattr = btrfs_listxattr, .removexattr = btrfs_removexattr, - .get_acl = btrfs_get_acl, .update_time = btrfs_update_time, }; diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index f2e8fcc279a3..e79ff6b90cb7 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -2807,14 +2807,11 @@ out_unlock: #define BTRFS_MAX_DEDUPE_LEN (16 * 1024 * 1024) static long btrfs_ioctl_file_extent_same(struct file *file, - void __user *argp) + struct btrfs_ioctl_same_args __user *argp) { - struct btrfs_ioctl_same_args tmp; struct btrfs_ioctl_same_args *same; struct btrfs_ioctl_same_extent_info *info; - struct inode *src = file->f_dentry->d_inode; - struct file *dst_file = NULL; - struct inode *dst; + struct inode *src = file_inode(file); u64 off; u64 len; int i; @@ -2822,6 +2819,7 @@ static long btrfs_ioctl_file_extent_same(struct file *file, unsigned long size; u64 bs = BTRFS_I(src)->root->fs_info->sb->s_blocksize; bool is_admin = capable(CAP_SYS_ADMIN); + u16 count; if (!(file->f_mode & FMODE_READ)) return -EINVAL; @@ -2830,17 +2828,14 @@ static long btrfs_ioctl_file_extent_same(struct file *file, if (ret) return ret; - if (copy_from_user(&tmp, - (struct btrfs_ioctl_same_args __user *)argp, - sizeof(tmp))) { + if (get_user(count, &argp->dest_count)) { ret = -EFAULT; goto out; } - size = sizeof(tmp) + - tmp.dest_count * sizeof(struct btrfs_ioctl_same_extent_info); + size = offsetof(struct btrfs_ioctl_same_args __user, info[count]); - same = memdup_user((struct btrfs_ioctl_same_args __user *)argp, size); + same = memdup_user(argp, size); if (IS_ERR(same)) { ret = PTR_ERR(same); @@ -2877,52 +2872,35 @@ static long btrfs_ioctl_file_extent_same(struct file *file, goto out; /* pre-format output fields to sane values */ - for (i = 0; i < same->dest_count; i++) { + for (i = 0; i < count; i++) { same->info[i].bytes_deduped = 0ULL; same->info[i].status = 0; } - ret = 0; - for (i = 0; i < same->dest_count; i++) { - info = &same->info[i]; - - dst_file = fget(info->fd); - if (!dst_file) { + for (i = 0, info = same->info; i < count; i++, info++) { + struct inode *dst; + struct fd dst_file = fdget(info->fd); + if (!dst_file.file) { info->status = -EBADF; - goto next; + continue; } + dst = file_inode(dst_file.file); - if (!(is_admin || (dst_file->f_mode & FMODE_WRITE))) { + if (!(is_admin || (dst_file.file->f_mode & FMODE_WRITE))) { info->status = -EINVAL; - goto next; - } - - info->status = -EXDEV; - if (file->f_path.mnt != dst_file->f_path.mnt) - goto next; - - dst = dst_file->f_dentry->d_inode; - if (src->i_sb != dst->i_sb) - goto next; - - if (S_ISDIR(dst->i_mode)) { + } else if (file->f_path.mnt != dst_file.file->f_path.mnt) { + info->status = -EXDEV; + } else if (S_ISDIR(dst->i_mode)) { info->status = -EISDIR; - goto next; - } - - if (!S_ISREG(dst->i_mode)) { + } else if (!S_ISREG(dst->i_mode)) { info->status = -EACCES; - goto next; + } else { + info->status = btrfs_extent_same(src, off, len, dst, + info->logical_offset); + if (info->status == 0) + info->bytes_deduped += len; } - - info->status = btrfs_extent_same(src, off, len, dst, - info->logical_offset); - if (info->status == 0) - info->bytes_deduped += len; - -next: - if (dst_file) - fput(dst_file); + fdput(dst_file); } ret = copy_to_user(argp, same, size); diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c index 1269fc30b15c..4055291a523e 100644 --- a/fs/btrfs/raid56.c +++ b/fs/btrfs/raid56.c @@ -1032,8 +1032,8 @@ static int rbio_add_io_page(struct btrfs_raid_bio *rbio, /* see if we can add this page onto our existing bio */ if (last) { - last_end = (u64)last->bi_sector << 9; - last_end += last->bi_size; + last_end = (u64)last->bi_iter.bi_sector << 9; + last_end += last->bi_iter.bi_size; /* * we can't merge these if they are from different @@ -1053,9 +1053,9 @@ static int rbio_add_io_page(struct btrfs_raid_bio *rbio, if (!bio) return -ENOMEM; - bio->bi_size = 0; + bio->bi_iter.bi_size = 0; bio->bi_bdev = stripe->dev->bdev; - bio->bi_sector = disk_start >> 9; + bio->bi_iter.bi_sector = disk_start >> 9; set_bit(BIO_UPTODATE, &bio->bi_flags); bio_add_page(bio, page, PAGE_CACHE_SIZE, 0); @@ -1111,7 +1111,7 @@ static void index_rbio_pages(struct btrfs_raid_bio *rbio) spin_lock_irq(&rbio->bio_list_lock); bio_list_for_each(bio, &rbio->bio_list) { - start = (u64)bio->bi_sector << 9; + start = (u64)bio->bi_iter.bi_sector << 9; stripe_offset = start - rbio->raid_map[0]; page_index = stripe_offset >> PAGE_CACHE_SHIFT; @@ -1272,7 +1272,7 @@ cleanup: static int find_bio_stripe(struct btrfs_raid_bio *rbio, struct bio *bio) { - u64 physical = bio->bi_sector; + u64 physical = bio->bi_iter.bi_sector; u64 stripe_start; int i; struct btrfs_bio_stripe *stripe; @@ -1298,7 +1298,7 @@ static int find_bio_stripe(struct btrfs_raid_bio *rbio, static int find_logical_bio_stripe(struct btrfs_raid_bio *rbio, struct bio *bio) { - u64 logical = bio->bi_sector; + u64 logical = bio->bi_iter.bi_sector; u64 stripe_start; int i; @@ -1600,8 +1600,8 @@ static int plug_cmp(void *priv, struct list_head *a, struct list_head *b) plug_list); struct btrfs_raid_bio *rb = container_of(b, struct btrfs_raid_bio, plug_list); - u64 a_sector = ra->bio_list.head->bi_sector; - u64 b_sector = rb->bio_list.head->bi_sector; + u64 a_sector = ra->bio_list.head->bi_iter.bi_sector; + u64 b_sector = rb->bio_list.head->bi_iter.bi_sector; if (a_sector < b_sector) return -1; @@ -1688,7 +1688,7 @@ int raid56_parity_write(struct btrfs_root *root, struct bio *bio, if (IS_ERR(rbio)) return PTR_ERR(rbio); bio_list_add(&rbio->bio_list, bio); - rbio->bio_list_bytes = bio->bi_size; + rbio->bio_list_bytes = bio->bi_iter.bi_size; /* * don't plug on full rbios, just get them out the door @@ -2041,7 +2041,7 @@ int raid56_parity_recover(struct btrfs_root *root, struct bio *bio, rbio->read_rebuild = 1; bio_list_add(&rbio->bio_list, bio); - rbio->bio_list_bytes = bio->bi_size; + rbio->bio_list_bytes = bio->bi_iter.bi_size; rbio->faila = find_logical_bio_stripe(rbio, bio); if (rbio->faila == -1) { diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index 68a5a26997bf..0be77993378e 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -1343,7 +1343,7 @@ static void scrub_recheck_block(struct btrfs_fs_info *fs_info, continue; } bio->bi_bdev = page->dev->bdev; - bio->bi_sector = page->physical >> 9; + bio->bi_iter.bi_sector = page->physical >> 9; bio_add_page(bio, page->page, PAGE_SIZE, 0); if (btrfsic_submit_bio_wait(READ, bio)) @@ -1463,7 +1463,7 @@ static int scrub_repair_page_from_good_copy(struct scrub_block *sblock_bad, if (!bio) return -EIO; bio->bi_bdev = page_bad->dev->bdev; - bio->bi_sector = page_bad->physical >> 9; + bio->bi_iter.bi_sector = page_bad->physical >> 9; ret = bio_add_page(bio, page_good->page, PAGE_SIZE, 0); if (PAGE_SIZE != ret) { @@ -1556,7 +1556,7 @@ again: bio->bi_private = sbio; bio->bi_end_io = scrub_wr_bio_end_io; bio->bi_bdev = sbio->dev->bdev; - bio->bi_sector = sbio->physical >> 9; + bio->bi_iter.bi_sector = sbio->physical >> 9; sbio->err = 0; } else if (sbio->physical + sbio->page_count * PAGE_SIZE != spage->physical_for_dev_replace || @@ -1962,7 +1962,7 @@ again: bio->bi_private = sbio; bio->bi_end_io = scrub_bio_end_io; bio->bi_bdev = sbio->dev->bdev; - bio->bi_sector = sbio->physical >> 9; + bio->bi_iter.bi_sector = sbio->physical >> 9; sbio->err = 0; } else if (sbio->physical + sbio->page_count * PAGE_SIZE != spage->physical || @@ -3470,8 +3470,8 @@ static int write_page_nocow(struct scrub_ctx *sctx, spin_unlock(&sctx->stat_lock); return -ENOMEM; } - bio->bi_size = 0; - bio->bi_sector = physical_for_dev_replace >> 9; + bio->bi_iter.bi_size = 0; + bio->bi_iter.bi_sector = physical_for_dev_replace >> 9; bio->bi_bdev = dev->bdev; ret = bio_add_page(bio, page, PAGE_CACHE_SIZE, 0); if (ret != PAGE_CACHE_SIZE) { diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 994c40955315..5011aadacab8 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -1402,6 +1402,7 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data) unsigned int old_metadata_ratio = fs_info->metadata_ratio; int ret; + sync_filesystem(sb); btrfs_remount_prepare(fs_info); ret = btrfs_parse_options(root, data); diff --git a/fs/btrfs/tests/free-space-tests.c b/fs/btrfs/tests/free-space-tests.c index 6fc82010dc15..c8d9ddf84c69 100644 --- a/fs/btrfs/tests/free-space-tests.c +++ b/fs/btrfs/tests/free-space-tests.c @@ -101,7 +101,7 @@ static int test_extents(struct btrfs_block_group_cache *cache) ret = btrfs_remove_free_space(cache, 2 * 1024 * 1024, 4096); if (ret) { - test_msg("Error removing middle peice %d\n", ret); + test_msg("Error removing middle piece %d\n", ret); return ret; } @@ -266,7 +266,7 @@ static int test_bitmaps_and_extents(struct btrfs_block_group_cache *cache) } if (test_check_exists(cache, 512 * 1024, 3 * 1024 * 1024)) { - test_msg("Left over peices after removing overlapping\n"); + test_msg("Left over pieces after removing overlapping\n"); return -1; } diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 558f46c6bd6f..49d7fab73360 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -5313,6 +5313,13 @@ static void btrfs_end_bio(struct bio *bio, int err) bio_put(bio); bio = bbio->orig_bio; } + + /* + * We have original bio now. So increment bi_remaining to + * account for it in endio + */ + atomic_inc(&bio->bi_remaining); + bio->bi_private = bbio->private; bio->bi_end_io = bbio->end_io; btrfs_io_bio(bio)->mirror_num = bbio->mirror_num; @@ -5419,7 +5426,7 @@ static int bio_size_ok(struct block_device *bdev, struct bio *bio, if (!q->merge_bvec_fn) return 1; - bvm.bi_size = bio->bi_size - prev->bv_len; + bvm.bi_size = bio->bi_iter.bi_size - prev->bv_len; if (q->merge_bvec_fn(q, &bvm, prev) < prev->bv_len) return 0; return 1; @@ -5434,7 +5441,7 @@ static void submit_stripe_bio(struct btrfs_root *root, struct btrfs_bio *bbio, bio->bi_private = bbio; btrfs_io_bio(bio)->stripe_index = dev_nr; bio->bi_end_io = btrfs_end_bio; - bio->bi_sector = physical >> 9; + bio->bi_iter.bi_sector = physical >> 9; #ifdef DEBUG { struct rcu_string *name; @@ -5475,7 +5482,7 @@ again: while (bvec <= (first_bio->bi_io_vec + first_bio->bi_vcnt - 1)) { if (bio_add_page(bio, bvec->bv_page, bvec->bv_len, bvec->bv_offset) < bvec->bv_len) { - u64 len = bio->bi_size; + u64 len = bio->bi_iter.bi_size; atomic_inc(&bbio->stripes_pending); submit_stripe_bio(root, bbio, bio, physical, dev_nr, @@ -5497,7 +5504,7 @@ static void bbio_error(struct btrfs_bio *bbio, struct bio *bio, u64 logical) bio->bi_private = bbio->private; bio->bi_end_io = bbio->end_io; btrfs_io_bio(bio)->mirror_num = bbio->mirror_num; - bio->bi_sector = logical >> 9; + bio->bi_iter.bi_sector = logical >> 9; kfree(bbio); bio_endio(bio, -EIO); } @@ -5508,7 +5515,7 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio, { struct btrfs_device *dev; struct bio *first_bio = bio; - u64 logical = (u64)bio->bi_sector << 9; + u64 logical = (u64)bio->bi_iter.bi_sector << 9; u64 length = 0; u64 map_length; u64 *raid_map = NULL; @@ -5517,7 +5524,7 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio, int total_devs = 1; struct btrfs_bio *bbio = NULL; - length = bio->bi_size; + length = bio->bi_iter.bi_size; map_length = length; btrfs_bio_counter_inc_blocked(root->fs_info); diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c index 4b33765add38..ad8328d797ea 100644 --- a/fs/btrfs/xattr.c +++ b/fs/btrfs/xattr.c @@ -22,6 +22,7 @@ #include <linux/rwsem.h> #include <linux/xattr.h> #include <linux/security.h> +#include <linux/posix_acl_xattr.h> #include "ctree.h" #include "btrfs_inode.h" #include "transaction.h" @@ -314,8 +315,8 @@ err: */ const struct xattr_handler *btrfs_xattr_handlers[] = { #ifdef CONFIG_BTRFS_FS_POSIX_ACL - &btrfs_xattr_acl_access_handler, - &btrfs_xattr_acl_default_handler, + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, #endif NULL, }; diff --git a/fs/btrfs/xattr.h b/fs/btrfs/xattr.h index b3cc8039134b..5049608d1388 100644 --- a/fs/btrfs/xattr.h +++ b/fs/btrfs/xattr.h @@ -21,8 +21,6 @@ #include <linux/xattr.h> -extern const struct xattr_handler btrfs_xattr_acl_access_handler; -extern const struct xattr_handler btrfs_xattr_acl_default_handler; extern const struct xattr_handler *btrfs_xattr_handlers[]; extern ssize_t __btrfs_getxattr(struct inode *inode, const char *name, diff --git a/fs/buffer.c b/fs/buffer.c index 6024877335ca..8c53a2b15ecb 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -654,14 +654,16 @@ EXPORT_SYMBOL(mark_buffer_dirty_inode); static void __set_page_dirty(struct page *page, struct address_space *mapping, int warn) { - spin_lock_irq(&mapping->tree_lock); + unsigned long flags; + + spin_lock_irqsave(&mapping->tree_lock, flags); if (page->mapping) { /* Race with truncate? */ WARN_ON_ONCE(warn && !PageUptodate(page)); account_page_dirtied(page, mapping); radix_tree_tag_set(&mapping->page_tree, page_index(page), PAGECACHE_TAG_DIRTY); } - spin_unlock_irq(&mapping->tree_lock); + spin_unlock_irqrestore(&mapping->tree_lock, flags); __mark_inode_dirty(mapping->host, I_DIRTY_PAGES); } @@ -1312,7 +1314,7 @@ static void bh_lru_install(struct buffer_head *bh) } while (out < BH_LRU_SIZE) bhs[out++] = NULL; - memcpy(__this_cpu_ptr(&bh_lrus.bhs), bhs, sizeof(bhs)); + memcpy(this_cpu_ptr(&bh_lrus.bhs), bhs, sizeof(bhs)); } bh_lru_unlock(); @@ -2982,11 +2984,11 @@ static void guard_bh_eod(int rw, struct bio *bio, struct buffer_head *bh) * let it through, and the IO layer will turn it into * an EIO. */ - if (unlikely(bio->bi_sector >= maxsector)) + if (unlikely(bio->bi_iter.bi_sector >= maxsector)) return; - maxsector -= bio->bi_sector; - bytes = bio->bi_size; + maxsector -= bio->bi_iter.bi_sector; + bytes = bio->bi_iter.bi_size; if (likely((bytes >> 9) <= maxsector)) return; @@ -2994,7 +2996,7 @@ static void guard_bh_eod(int rw, struct bio *bio, struct buffer_head *bh) bytes = maxsector << 9; /* Truncate the bio.. */ - bio->bi_size = bytes; + bio->bi_iter.bi_size = bytes; bio->bi_io_vec[0].bv_len = bytes; /* ..and clear the end of the buffer for reads */ @@ -3029,14 +3031,14 @@ int _submit_bh(int rw, struct buffer_head *bh, unsigned long bio_flags) */ bio = bio_alloc(GFP_NOIO, 1); - bio->bi_sector = bh->b_blocknr * (bh->b_size >> 9); + bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9); bio->bi_bdev = bh->b_bdev; bio->bi_io_vec[0].bv_page = bh->b_page; bio->bi_io_vec[0].bv_len = bh->b_size; bio->bi_io_vec[0].bv_offset = bh_offset(bh); bio->bi_vcnt = 1; - bio->bi_size = bh->b_size; + bio->bi_iter.bi_size = bh->b_size; bio->bi_end_io = end_bio_bh_io_sync; bio->bi_private = bh; @@ -3086,7 +3088,7 @@ EXPORT_SYMBOL(submit_bh); * until the buffer gets unlocked). * * ll_rw_block sets b_end_io to simple completion handler that marks - * the buffer up-to-date (if approriate), unlocks the buffer and wakes + * the buffer up-to-date (if appropriate), unlocks the buffer and wakes * any waiters. * * All of the buffers must be for the same device, and must also be a diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c index ca65f39dc8dc..6494d9f673aa 100644 --- a/fs/cachefiles/namei.c +++ b/fs/cachefiles/namei.c @@ -391,12 +391,12 @@ try_again: path.dentry = dir; path_to_graveyard.mnt = cache->mnt; path_to_graveyard.dentry = cache->graveyard; - ret = security_path_rename(&path, rep, &path_to_graveyard, grave); + ret = security_path_rename(&path, rep, &path_to_graveyard, grave, 0); if (ret < 0) { cachefiles_io_error(cache, "Rename security error %d", ret); } else { ret = vfs_rename(dir->d_inode, rep, - cache->graveyard->d_inode, grave, NULL); + cache->graveyard->d_inode, grave, NULL, 0); if (ret != 0 && ret != -ENOMEM) cachefiles_io_error(cache, "Rename failed with error %d", ret); diff --git a/fs/cachefiles/rdwr.c b/fs/cachefiles/rdwr.c index ebaff368120d..4b1fb5ca65b8 100644 --- a/fs/cachefiles/rdwr.c +++ b/fs/cachefiles/rdwr.c @@ -265,24 +265,22 @@ static int cachefiles_read_backing_file_one(struct cachefiles_object *object, goto nomem_monitor; } - ret = add_to_page_cache(newpage, bmapping, - netpage->index, cachefiles_gfp); + ret = add_to_page_cache_lru(newpage, bmapping, + netpage->index, cachefiles_gfp); if (ret == 0) goto installed_new_backing_page; if (ret != -EEXIST) goto nomem_page; } - /* we've installed a new backing page, so now we need to add it - * to the LRU list and start it reading */ + /* we've installed a new backing page, so now we need to start + * it reading */ installed_new_backing_page: _debug("- new %p", newpage); backpage = newpage; newpage = NULL; - lru_cache_add_file(backpage); - read_backing_page: ret = bmapping->a_ops->readpage(NULL, backpage); if (ret < 0) @@ -510,24 +508,23 @@ static int cachefiles_read_backing_file(struct cachefiles_object *object, goto nomem; } - ret = add_to_page_cache(newpage, bmapping, - netpage->index, cachefiles_gfp); + ret = add_to_page_cache_lru(newpage, bmapping, + netpage->index, + cachefiles_gfp); if (ret == 0) goto installed_new_backing_page; if (ret != -EEXIST) goto nomem; } - /* we've installed a new backing page, so now we need to add it - * to the LRU list and start it reading */ + /* we've installed a new backing page, so now we need + * to start it reading */ installed_new_backing_page: _debug("- new %p", newpage); backpage = newpage; newpage = NULL; - lru_cache_add_file(backpage); - reread_backing_page: ret = bmapping->a_ops->readpage(NULL, backpage); if (ret < 0) @@ -538,8 +535,8 @@ static int cachefiles_read_backing_file(struct cachefiles_object *object, monitor_backing_page: _debug("- monitor add"); - ret = add_to_page_cache(netpage, op->mapping, netpage->index, - cachefiles_gfp); + ret = add_to_page_cache_lru(netpage, op->mapping, + netpage->index, cachefiles_gfp); if (ret < 0) { if (ret == -EEXIST) { page_cache_release(netpage); @@ -549,8 +546,6 @@ static int cachefiles_read_backing_file(struct cachefiles_object *object, goto nomem; } - lru_cache_add_file(netpage); - /* install a monitor */ page_cache_get(netpage); monitor->netfs_page = netpage; @@ -613,8 +608,8 @@ static int cachefiles_read_backing_file(struct cachefiles_object *object, backing_page_already_uptodate: _debug("- uptodate"); - ret = add_to_page_cache(netpage, op->mapping, netpage->index, - cachefiles_gfp); + ret = add_to_page_cache_lru(netpage, op->mapping, + netpage->index, cachefiles_gfp); if (ret < 0) { if (ret == -EEXIST) { page_cache_release(netpage); @@ -631,8 +626,6 @@ static int cachefiles_read_backing_file(struct cachefiles_object *object, fscache_mark_page_cached(op, netpage); - lru_cache_add_file(netpage); - /* the netpage is unlocked and marked up to date here */ fscache_end_io(op, netpage, 0); page_cache_release(netpage); diff --git a/fs/ceph/Kconfig b/fs/ceph/Kconfig index ac9a2ef5bb9b..264e9bf83ff3 100644 --- a/fs/ceph/Kconfig +++ b/fs/ceph/Kconfig @@ -25,3 +25,16 @@ config CEPH_FSCACHE caching support for Ceph clients using FS-Cache endif + +config CEPH_FS_POSIX_ACL + bool "Ceph POSIX Access Control Lists" + depends on CEPH_FS + select FS_POSIX_ACL + help + POSIX Access Control Lists (ACLs) support permissions for users and + groups beyond the owner/group/world scheme. + + To learn more about Access Control Lists, visit the POSIX ACLs for + Linux website <http://acl.bestbits.at/>. + + If you don't know what Access Control Lists are, say N diff --git a/fs/ceph/Makefile b/fs/ceph/Makefile index 32e30106a2f0..85a4230b9bff 100644 --- a/fs/ceph/Makefile +++ b/fs/ceph/Makefile @@ -10,3 +10,4 @@ ceph-y := super.o inode.o dir.o file.o locks.o addr.o ioctl.o \ debugfs.o ceph-$(CONFIG_CEPH_FSCACHE) += cache.o +ceph-$(CONFIG_CEPH_FS_POSIX_ACL) += acl.o diff --git a/fs/ceph/acl.c b/fs/ceph/acl.c new file mode 100644 index 000000000000..21887d63dad5 --- /dev/null +++ b/fs/ceph/acl.c @@ -0,0 +1,200 @@ +/* + * linux/fs/ceph/acl.c + * + * Copyright (C) 2013 Guangliang Zhao, <lucienchao@gmail.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public + * License v2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 021110-1307, USA. + */ + +#include <linux/ceph/ceph_debug.h> +#include <linux/fs.h> +#include <linux/string.h> +#include <linux/xattr.h> +#include <linux/posix_acl_xattr.h> +#include <linux/posix_acl.h> +#include <linux/sched.h> +#include <linux/slab.h> + +#include "super.h" + +static inline void ceph_set_cached_acl(struct inode *inode, + int type, struct posix_acl *acl) +{ + struct ceph_inode_info *ci = ceph_inode(inode); + + spin_lock(&ci->i_ceph_lock); + if (__ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 0)) + set_cached_acl(inode, type, acl); + spin_unlock(&ci->i_ceph_lock); +} + +static inline struct posix_acl *ceph_get_cached_acl(struct inode *inode, + int type) +{ + struct ceph_inode_info *ci = ceph_inode(inode); + struct posix_acl *acl = ACL_NOT_CACHED; + + spin_lock(&ci->i_ceph_lock); + if (__ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 0)) + acl = get_cached_acl(inode, type); + spin_unlock(&ci->i_ceph_lock); + + return acl; +} + +struct posix_acl *ceph_get_acl(struct inode *inode, int type) +{ + int size; + const char *name; + char *value = NULL; + struct posix_acl *acl; + + switch (type) { + case ACL_TYPE_ACCESS: + name = POSIX_ACL_XATTR_ACCESS; + break; + case ACL_TYPE_DEFAULT: + name = POSIX_ACL_XATTR_DEFAULT; + break; + default: + BUG(); + } + + size = __ceph_getxattr(inode, name, "", 0); + if (size > 0) { + value = kzalloc(size, GFP_NOFS); + if (!value) + return ERR_PTR(-ENOMEM); + size = __ceph_getxattr(inode, name, value, size); + } + + if (size > 0) + acl = posix_acl_from_xattr(&init_user_ns, value, size); + else if (size == -ERANGE || size == -ENODATA || size == 0) + acl = NULL; + else + acl = ERR_PTR(-EIO); + + kfree(value); + + if (!IS_ERR(acl)) + ceph_set_cached_acl(inode, type, acl); + + return acl; +} + +int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type) +{ + int ret = 0, size = 0; + const char *name = NULL; + char *value = NULL; + struct iattr newattrs; + umode_t new_mode = inode->i_mode, old_mode = inode->i_mode; + struct dentry *dentry; + + if (acl) { + ret = posix_acl_valid(acl); + if (ret < 0) + goto out; + } + + switch (type) { + case ACL_TYPE_ACCESS: + name = POSIX_ACL_XATTR_ACCESS; + if (acl) { + ret = posix_acl_equiv_mode(acl, &new_mode); + if (ret < 0) + goto out; + if (ret == 0) + acl = NULL; + } + break; + case ACL_TYPE_DEFAULT: + if (!S_ISDIR(inode->i_mode)) { + ret = acl ? -EINVAL : 0; + goto out; + } + name = POSIX_ACL_XATTR_DEFAULT; + break; + default: + ret = -EINVAL; + goto out; + } + + if (acl) { + size = posix_acl_xattr_size(acl->a_count); + value = kmalloc(size, GFP_NOFS); + if (!value) { + ret = -ENOMEM; + goto out; + } + + ret = posix_acl_to_xattr(&init_user_ns, acl, value, size); + if (ret < 0) + goto out_free; + } + + dentry = d_find_alias(inode); + if (new_mode != old_mode) { + newattrs.ia_mode = new_mode; + newattrs.ia_valid = ATTR_MODE; + ret = ceph_setattr(dentry, &newattrs); + if (ret) + goto out_dput; + } + + ret = __ceph_setxattr(dentry, name, value, size, 0); + if (ret) { + if (new_mode != old_mode) { + newattrs.ia_mode = old_mode; + newattrs.ia_valid = ATTR_MODE; + ceph_setattr(dentry, &newattrs); + } + goto out_dput; + } + + ceph_set_cached_acl(inode, type, acl); + +out_dput: + dput(dentry); +out_free: + kfree(value); +out: + return ret; +} + +int ceph_init_acl(struct dentry *dentry, struct inode *inode, struct inode *dir) +{ + struct posix_acl *default_acl, *acl; + int error; + + error = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl); + if (error) + return error; + + if (!default_acl && !acl) + cache_no_acl(inode); + + if (default_acl) { + error = ceph_set_acl(inode, default_acl, ACL_TYPE_DEFAULT); + posix_acl_release(default_acl); + } + if (acl) { + if (!error) + error = ceph_set_acl(inode, acl, ACL_TYPE_ACCESS); + posix_acl_release(acl); + } + return error; +} diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index ec3ba43b9faa..b53278c9fd97 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -209,6 +209,7 @@ static int readpage_nounlock(struct file *filp, struct page *page) err = 0; if (err < 0) { SetPageError(page); + ceph_fscache_readpage_cancel(inode, page); goto out; } else { if (err < PAGE_CACHE_SIZE) { @@ -256,6 +257,8 @@ static void finish_read(struct ceph_osd_request *req, struct ceph_msg *msg) for (i = 0; i < num_pages; i++) { struct page *page = osd_data->pages[i]; + if (rc < 0) + goto unlock; if (bytes < (int)PAGE_CACHE_SIZE) { /* zero (remainder of) page */ int s = bytes < 0 ? 0 : bytes; @@ -266,6 +269,7 @@ static void finish_read(struct ceph_osd_request *req, struct ceph_msg *msg) flush_dcache_page(page); SetPageUptodate(page); ceph_readpage_to_fscache(inode, page); +unlock: unlock_page(page); page_cache_release(page); bytes -= PAGE_CACHE_SIZE; @@ -1207,6 +1211,41 @@ const struct address_space_operations ceph_aops = { /* * vm ops */ +static int ceph_filemap_fault(struct vm_area_struct *vma, struct vm_fault *vmf) +{ + struct inode *inode = file_inode(vma->vm_file); + struct ceph_inode_info *ci = ceph_inode(inode); + struct ceph_file_info *fi = vma->vm_file->private_data; + loff_t off = vmf->pgoff << PAGE_CACHE_SHIFT; + int want, got, ret; + + dout("filemap_fault %p %llx.%llx %llu~%zd trying to get caps\n", + inode, ceph_vinop(inode), off, (size_t)PAGE_CACHE_SIZE); + if (fi->fmode & CEPH_FILE_MODE_LAZY) + want = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO; + else + want = CEPH_CAP_FILE_CACHE; + while (1) { + got = 0; + ret = ceph_get_caps(ci, CEPH_CAP_FILE_RD, want, &got, -1); + if (ret == 0) + break; + if (ret != -ERESTARTSYS) { + WARN_ON(1); + return VM_FAULT_SIGBUS; + } + } + dout("filemap_fault %p %llu~%zd got cap refs on %s\n", + inode, off, (size_t)PAGE_CACHE_SIZE, ceph_cap_string(got)); + + ret = filemap_fault(vma, vmf); + + dout("filemap_fault %p %llu~%zd dropping cap refs on %s ret %d\n", + inode, off, (size_t)PAGE_CACHE_SIZE, ceph_cap_string(got), ret); + ceph_put_cap_refs(ci, got); + + return ret; +} /* * Reuse write_begin here for simplicity. @@ -1214,23 +1253,41 @@ const struct address_space_operations ceph_aops = { static int ceph_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) { struct inode *inode = file_inode(vma->vm_file); - struct page *page = vmf->page; + struct ceph_inode_info *ci = ceph_inode(inode); + struct ceph_file_info *fi = vma->vm_file->private_data; struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc; + struct page *page = vmf->page; loff_t off = page_offset(page); - loff_t size, len; - int ret; - - /* Update time before taking page lock */ - file_update_time(vma->vm_file); + loff_t size = i_size_read(inode); + size_t len; + int want, got, ret; - size = i_size_read(inode); if (off + PAGE_CACHE_SIZE <= size) len = PAGE_CACHE_SIZE; else len = size & ~PAGE_CACHE_MASK; - dout("page_mkwrite %p %llu~%llu page %p idx %lu\n", inode, - off, len, page, page->index); + dout("page_mkwrite %p %llx.%llx %llu~%zd getting caps i_size %llu\n", + inode, ceph_vinop(inode), off, len, size); + if (fi->fmode & CEPH_FILE_MODE_LAZY) + want = CEPH_CAP_FILE_BUFFER | CEPH_CAP_FILE_LAZYIO; + else + want = CEPH_CAP_FILE_BUFFER; + while (1) { + got = 0; + ret = ceph_get_caps(ci, CEPH_CAP_FILE_WR, want, &got, off + len); + if (ret == 0) + break; + if (ret != -ERESTARTSYS) { + WARN_ON(1); + return VM_FAULT_SIGBUS; + } + } + dout("page_mkwrite %p %llu~%zd got cap refs on %s\n", + inode, off, len, ceph_cap_string(got)); + + /* Update time before taking page lock */ + file_update_time(vma->vm_file); lock_page(page); @@ -1252,14 +1309,26 @@ static int ceph_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) ret = VM_FAULT_SIGBUS; } out: - dout("page_mkwrite %p %llu~%llu = %d\n", inode, off, len, ret); - if (ret != VM_FAULT_LOCKED) + if (ret != VM_FAULT_LOCKED) { unlock_page(page); + } else { + int dirty; + spin_lock(&ci->i_ceph_lock); + dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_FILE_WR); + spin_unlock(&ci->i_ceph_lock); + if (dirty) + __mark_inode_dirty(inode, dirty); + } + + dout("page_mkwrite %p %llu~%zd dropping cap refs on %s ret %d\n", + inode, off, len, ceph_cap_string(got), ret); + ceph_put_cap_refs(ci, got); + return ret; } static struct vm_operations_struct ceph_vmops = { - .fault = filemap_fault, + .fault = ceph_filemap_fault, .page_mkwrite = ceph_page_mkwrite, .remap_pages = generic_file_remap_pages, }; diff --git a/fs/ceph/cache.c b/fs/ceph/cache.c index 8c44fdd4e1c3..834f9f3723fb 100644 --- a/fs/ceph/cache.c +++ b/fs/ceph/cache.c @@ -205,6 +205,7 @@ void ceph_fscache_register_inode_cookie(struct ceph_fs_client* fsc, ci->fscache = fscache_acquire_cookie(fsc->fscache, &ceph_fscache_inode_object_def, ci, true); + fscache_check_consistency(ci->fscache); done: mutex_unlock(&inode->i_mutex); diff --git a/fs/ceph/cache.h b/fs/ceph/cache.h index ba949408a336..5ac591bd012b 100644 --- a/fs/ceph/cache.h +++ b/fs/ceph/cache.h @@ -48,6 +48,12 @@ void ceph_readpage_to_fscache(struct inode *inode, struct page *page); void ceph_invalidate_fscache_page(struct inode* inode, struct page *page); void ceph_queue_revalidate(struct inode *inode); +static inline void ceph_fscache_update_objectsize(struct inode *inode) +{ + struct ceph_inode_info *ci = ceph_inode(inode); + fscache_attr_changed(ci->fscache); +} + static inline void ceph_fscache_invalidate(struct inode *inode) { fscache_invalidate(ceph_inode(inode)->fscache); @@ -67,6 +73,14 @@ static inline int ceph_release_fscache_page(struct page *page, gfp_t gfp) return fscache_maybe_release_page(ci->fscache, page, gfp); } +static inline void ceph_fscache_readpage_cancel(struct inode *inode, + struct page *page) +{ + struct ceph_inode_info *ci = ceph_inode(inode); + if (fscache_cookie_valid(ci->fscache) && PageFsCache(page)) + __fscache_uncache_page(ci->fscache, page); +} + static inline void ceph_fscache_readpages_cancel(struct inode *inode, struct list_head *pages) { @@ -127,6 +141,10 @@ static inline void ceph_readpage_to_fscache(struct inode *inode, { } +static inline void ceph_fscache_update_objectsize(struct inode *inode) +{ +} + static inline void ceph_fscache_invalidate(struct inode *inode) { } @@ -145,6 +163,11 @@ static inline int ceph_release_fscache_page(struct page *page, gfp_t gfp) return 1; } +static inline void ceph_fscache_readpage_cancel(struct inode *inode, + struct page *page) +{ +} + static inline void ceph_fscache_readpages_cancel(struct inode *inode, struct list_head *pages) { diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 3c0a4bd74996..2e5e648eb5c3 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -555,21 +555,34 @@ retry: cap->ci = ci; __insert_cap_node(ci, cap); - /* clear out old exporting info? (i.e. on cap import) */ - if (ci->i_cap_exporting_mds == mds) { - ci->i_cap_exporting_issued = 0; - ci->i_cap_exporting_mseq = 0; - ci->i_cap_exporting_mds = -1; - } - /* add to session cap list */ cap->session = session; spin_lock(&session->s_cap_lock); list_add_tail(&cap->session_caps, &session->s_caps); session->s_nr_caps++; spin_unlock(&session->s_cap_lock); - } else if (new_cap) - ceph_put_cap(mdsc, new_cap); + } else { + if (new_cap) + ceph_put_cap(mdsc, new_cap); + + /* + * auth mds of the inode changed. we received the cap export + * message, but still haven't received the cap import message. + * handle_cap_export() updated the new auth MDS' cap. + * + * "ceph_seq_cmp(seq, cap->seq) <= 0" means we are processing + * a message that was send before the cap import message. So + * don't remove caps. + */ + if (ceph_seq_cmp(seq, cap->seq) <= 0) { + WARN_ON(cap != ci->i_auth_cap); + WARN_ON(cap->cap_id != cap_id); + seq = cap->seq; + mseq = cap->mseq; + issued |= cap->issued; + flags |= CEPH_CAP_FLAG_AUTH; + } + } if (!ci->i_snap_realm) { /* @@ -609,17 +622,13 @@ retry: if (flags & CEPH_CAP_FLAG_AUTH) { if (ci->i_auth_cap == NULL || - ceph_seq_cmp(ci->i_auth_cap->mseq, mseq) < 0) + ceph_seq_cmp(ci->i_auth_cap->mseq, mseq) < 0) { ci->i_auth_cap = cap; - } else if (ci->i_auth_cap == cap) { - ci->i_auth_cap = NULL; - spin_lock(&mdsc->cap_dirty_lock); - if (!list_empty(&ci->i_dirty_item)) { - dout(" moving %p to cap_dirty_migrating\n", inode); - list_move(&ci->i_dirty_item, - &mdsc->cap_dirty_migrating); + cap->mds_wanted = wanted; } - spin_unlock(&mdsc->cap_dirty_lock); + ci->i_cap_exporting_issued = 0; + } else { + WARN_ON(ci->i_auth_cap == cap); } dout("add_cap inode %p (%llx.%llx) cap %p %s now %s seq %d mds%d\n", @@ -628,7 +637,7 @@ retry: cap->cap_id = cap_id; cap->issued = issued; cap->implemented |= issued; - if (mseq > cap->mseq) + if (ceph_seq_cmp(mseq, cap->mseq) > 0) cap->mds_wanted = wanted; else cap->mds_wanted |= wanted; @@ -816,7 +825,7 @@ int __ceph_caps_revoking_other(struct ceph_inode_info *ci, for (p = rb_first(&ci->i_caps); p; p = rb_next(p)) { cap = rb_entry(p, struct ceph_cap, ci_node); - if (cap != ocap && __cap_is_valid(cap) && + if (cap != ocap && (cap->implemented & ~cap->issued & mask)) return 1; } @@ -878,7 +887,10 @@ int __ceph_caps_mds_wanted(struct ceph_inode_info *ci) cap = rb_entry(p, struct ceph_cap, ci_node); if (!__cap_is_valid(cap)) continue; - mds_wanted |= cap->mds_wanted; + if (cap == ci->i_auth_cap) + mds_wanted |= cap->mds_wanted; + else + mds_wanted |= (cap->mds_wanted & ~CEPH_CAP_ANY_FILE_WR); } return mds_wanted; } @@ -888,7 +900,19 @@ int __ceph_caps_mds_wanted(struct ceph_inode_info *ci) */ static int __ceph_is_any_caps(struct ceph_inode_info *ci) { - return !RB_EMPTY_ROOT(&ci->i_caps) || ci->i_cap_exporting_mds >= 0; + return !RB_EMPTY_ROOT(&ci->i_caps) || ci->i_cap_exporting_issued; +} + +int ceph_is_any_caps(struct inode *inode) +{ + struct ceph_inode_info *ci = ceph_inode(inode); + int ret; + + spin_lock(&ci->i_ceph_lock); + ret = __ceph_is_any_caps(ci); + spin_unlock(&ci->i_ceph_lock); + + return ret; } /* @@ -1383,13 +1407,10 @@ int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask) ci->i_snap_realm->cached_context); dout(" inode %p now dirty snapc %p auth cap %p\n", &ci->vfs_inode, ci->i_head_snapc, ci->i_auth_cap); + WARN_ON(!ci->i_auth_cap); BUG_ON(!list_empty(&ci->i_dirty_item)); spin_lock(&mdsc->cap_dirty_lock); - if (ci->i_auth_cap) - list_add(&ci->i_dirty_item, &mdsc->cap_dirty); - else - list_add(&ci->i_dirty_item, - &mdsc->cap_dirty_migrating); + list_add(&ci->i_dirty_item, &mdsc->cap_dirty); spin_unlock(&mdsc->cap_dirty_lock); if (ci->i_flushing_caps == 0) { ihold(inode); @@ -1735,13 +1756,12 @@ ack: /* * Try to flush dirty caps back to the auth mds. */ -static int try_flush_caps(struct inode *inode, struct ceph_mds_session *session, - unsigned *flush_tid) +static int try_flush_caps(struct inode *inode, unsigned *flush_tid) { struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; struct ceph_inode_info *ci = ceph_inode(inode); - int unlock_session = session ? 0 : 1; int flushing = 0; + struct ceph_mds_session *session = NULL; retry: spin_lock(&ci->i_ceph_lock); @@ -1755,13 +1775,14 @@ retry: int want = __ceph_caps_wanted(ci); int delayed; - if (!session) { + if (!session || session != cap->session) { spin_unlock(&ci->i_ceph_lock); + if (session) + mutex_unlock(&session->s_mutex); session = cap->session; mutex_lock(&session->s_mutex); goto retry; } - BUG_ON(session != cap->session); if (cap->session->s_state < CEPH_MDS_SESSION_OPEN) goto out; @@ -1780,7 +1801,7 @@ retry: out: spin_unlock(&ci->i_ceph_lock); out_unlocked: - if (session && unlock_session) + if (session) mutex_unlock(&session->s_mutex); return flushing; } @@ -1865,7 +1886,7 @@ int ceph_fsync(struct file *file, loff_t start, loff_t end, int datasync) return ret; mutex_lock(&inode->i_mutex); - dirty = try_flush_caps(inode, NULL, &flush_tid); + dirty = try_flush_caps(inode, &flush_tid); dout("fsync dirty caps are %s\n", ceph_cap_string(dirty)); /* @@ -1900,7 +1921,7 @@ int ceph_write_inode(struct inode *inode, struct writeback_control *wbc) dout("write_inode %p wait=%d\n", inode, wait); if (wait) { - dirty = try_flush_caps(inode, NULL, &flush_tid); + dirty = try_flush_caps(inode, &flush_tid); if (dirty) err = wait_event_interruptible(ci->i_cap_wq, caps_are_flushed(inode, flush_tid)); @@ -2350,11 +2371,11 @@ static void invalidate_aliases(struct inode *inode) d_prune_aliases(inode); /* * For non-directory inode, d_find_alias() only returns - * connected dentry. After calling d_invalidate(), the - * dentry become disconnected. + * hashed dentry. After calling d_invalidate(), the + * dentry becomes unhashed. * * For directory inode, d_find_alias() can return - * disconnected dentry. But directory inode should have + * unhashed dentry. But directory inode should have * one alias at most. */ while ((dn = d_find_alias(inode))) { @@ -2408,6 +2429,22 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant, dout(" size %llu max_size %llu, i_size %llu\n", size, max_size, inode->i_size); + + /* + * auth mds of the inode changed. we received the cap export message, + * but still haven't received the cap import message. handle_cap_export + * updated the new auth MDS' cap. + * + * "ceph_seq_cmp(seq, cap->seq) <= 0" means we are processing a message + * that was sent before the cap import message. So don't remove caps. + */ + if (ceph_seq_cmp(seq, cap->seq) <= 0) { + WARN_ON(cap != ci->i_auth_cap); + WARN_ON(cap->cap_id != le64_to_cpu(grant->cap_id)); + seq = cap->seq; + newcaps |= cap->issued; + } + /* * If CACHE is being revoked, and we have no dirty buffers, * try to invalidate (once). (If there are dirty buffers, we @@ -2434,6 +2471,7 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant, issued |= implemented | __ceph_caps_dirty(ci); cap->cap_gen = session->s_cap_gen; + cap->seq = seq; __check_cap_issue(ci, cap, newcaps); @@ -2464,6 +2502,7 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant, ceph_buffer_put(ci->i_xattrs.blob); ci->i_xattrs.blob = ceph_buffer_get(xattr_buf); ci->i_xattrs.version = version; + ceph_forget_all_cached_acls(inode); } } @@ -2483,6 +2522,10 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant, le32_to_cpu(grant->time_warp_seq), &ctime, &mtime, &atime); + + /* file layout may have changed */ + ci->i_layout = grant->layout; + /* max size increase? */ if (ci->i_auth_cap == cap && max_size != ci->i_max_size) { dout("max_size %lld -> %llu\n", ci->i_max_size, max_size); @@ -2511,11 +2554,6 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant, check_caps = 1; } - cap->seq = seq; - - /* file layout may have changed */ - ci->i_layout = grant->layout; - /* revocation, grant, or no-op? */ if (cap->issued & ~newcaps) { int revoking = cap->issued & ~newcaps; @@ -2741,65 +2779,114 @@ static void handle_cap_trunc(struct inode *inode, * caller holds s_mutex */ static void handle_cap_export(struct inode *inode, struct ceph_mds_caps *ex, - struct ceph_mds_session *session, - int *open_target_sessions) + struct ceph_mds_cap_peer *ph, + struct ceph_mds_session *session) { struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc; + struct ceph_mds_session *tsession = NULL; + struct ceph_cap *cap, *tcap; struct ceph_inode_info *ci = ceph_inode(inode); - int mds = session->s_mds; + u64 t_cap_id; unsigned mseq = le32_to_cpu(ex->migrate_seq); - struct ceph_cap *cap = NULL, *t; - struct rb_node *p; - int remember = 1; + unsigned t_seq, t_mseq; + int target, issued; + int mds = session->s_mds; - dout("handle_cap_export inode %p ci %p mds%d mseq %d\n", - inode, ci, mds, mseq); + if (ph) { + t_cap_id = le64_to_cpu(ph->cap_id); + t_seq = le32_to_cpu(ph->seq); + t_mseq = le32_to_cpu(ph->mseq); + target = le32_to_cpu(ph->mds); + } else { + t_cap_id = t_seq = t_mseq = 0; + target = -1; + } + dout("handle_cap_export inode %p ci %p mds%d mseq %d target %d\n", + inode, ci, mds, mseq, target); +retry: spin_lock(&ci->i_ceph_lock); + cap = __get_cap_for_mds(ci, mds); + if (!cap) + goto out_unlock; - /* make sure we haven't seen a higher mseq */ - for (p = rb_first(&ci->i_caps); p; p = rb_next(p)) { - t = rb_entry(p, struct ceph_cap, ci_node); - if (ceph_seq_cmp(t->mseq, mseq) > 0) { - dout(" higher mseq on cap from mds%d\n", - t->session->s_mds); - remember = 0; - } - if (t->session->s_mds == mds) - cap = t; + if (target < 0) { + __ceph_remove_cap(cap, false); + goto out_unlock; } - if (cap) { - if (remember) { - /* make note */ - ci->i_cap_exporting_mds = mds; - ci->i_cap_exporting_mseq = mseq; - ci->i_cap_exporting_issued = cap->issued; - - /* - * make sure we have open sessions with all possible - * export targets, so that we get the matching IMPORT - */ - *open_target_sessions = 1; + /* + * now we know we haven't received the cap import message yet + * because the exported cap still exist. + */ - /* - * we can't flush dirty caps that we've seen the - * EXPORT but no IMPORT for - */ - spin_lock(&mdsc->cap_dirty_lock); - if (!list_empty(&ci->i_dirty_item)) { - dout(" moving %p to cap_dirty_migrating\n", - inode); - list_move(&ci->i_dirty_item, - &mdsc->cap_dirty_migrating); + issued = cap->issued; + WARN_ON(issued != cap->implemented); + + tcap = __get_cap_for_mds(ci, target); + if (tcap) { + /* already have caps from the target */ + if (tcap->cap_id != t_cap_id || + ceph_seq_cmp(tcap->seq, t_seq) < 0) { + dout(" updating import cap %p mds%d\n", tcap, target); + tcap->cap_id = t_cap_id; + tcap->seq = t_seq - 1; + tcap->issue_seq = t_seq - 1; + tcap->mseq = t_mseq; + tcap->issued |= issued; + tcap->implemented |= issued; + if (cap == ci->i_auth_cap) + ci->i_auth_cap = tcap; + if (ci->i_flushing_caps && ci->i_auth_cap == tcap) { + spin_lock(&mdsc->cap_dirty_lock); + list_move_tail(&ci->i_flushing_item, + &tcap->session->s_cap_flushing); + spin_unlock(&mdsc->cap_dirty_lock); } - spin_unlock(&mdsc->cap_dirty_lock); } __ceph_remove_cap(cap, false); + goto out_unlock; } - /* else, we already released it */ + if (tsession) { + int flag = (cap == ci->i_auth_cap) ? CEPH_CAP_FLAG_AUTH : 0; + spin_unlock(&ci->i_ceph_lock); + /* add placeholder for the export tagert */ + ceph_add_cap(inode, tsession, t_cap_id, -1, issued, 0, + t_seq - 1, t_mseq, (u64)-1, flag, NULL); + goto retry; + } + + spin_unlock(&ci->i_ceph_lock); + mutex_unlock(&session->s_mutex); + + /* open target session */ + tsession = ceph_mdsc_open_export_target_session(mdsc, target); + if (!IS_ERR(tsession)) { + if (mds > target) { + mutex_lock(&session->s_mutex); + mutex_lock_nested(&tsession->s_mutex, + SINGLE_DEPTH_NESTING); + } else { + mutex_lock(&tsession->s_mutex); + mutex_lock_nested(&session->s_mutex, + SINGLE_DEPTH_NESTING); + } + ceph_add_cap_releases(mdsc, tsession); + } else { + WARN_ON(1); + tsession = NULL; + target = -1; + } + goto retry; + +out_unlock: spin_unlock(&ci->i_ceph_lock); + mutex_unlock(&session->s_mutex); + if (tsession) { + mutex_unlock(&tsession->s_mutex); + ceph_put_mds_session(tsession); + } } /* @@ -2810,10 +2897,12 @@ static void handle_cap_export(struct inode *inode, struct ceph_mds_caps *ex, */ static void handle_cap_import(struct ceph_mds_client *mdsc, struct inode *inode, struct ceph_mds_caps *im, + struct ceph_mds_cap_peer *ph, struct ceph_mds_session *session, void *snaptrace, int snaptrace_len) { struct ceph_inode_info *ci = ceph_inode(inode); + struct ceph_cap *cap; int mds = session->s_mds; unsigned issued = le32_to_cpu(im->caps); unsigned wanted = le32_to_cpu(im->wanted); @@ -2821,28 +2910,44 @@ static void handle_cap_import(struct ceph_mds_client *mdsc, unsigned mseq = le32_to_cpu(im->migrate_seq); u64 realmino = le64_to_cpu(im->realm); u64 cap_id = le64_to_cpu(im->cap_id); + u64 p_cap_id; + int peer; - if (ci->i_cap_exporting_mds >= 0 && - ceph_seq_cmp(ci->i_cap_exporting_mseq, mseq) < 0) { - dout("handle_cap_import inode %p ci %p mds%d mseq %d" - " - cleared exporting from mds%d\n", - inode, ci, mds, mseq, - ci->i_cap_exporting_mds); - ci->i_cap_exporting_issued = 0; - ci->i_cap_exporting_mseq = 0; - ci->i_cap_exporting_mds = -1; + if (ph) { + p_cap_id = le64_to_cpu(ph->cap_id); + peer = le32_to_cpu(ph->mds); + } else { + p_cap_id = 0; + peer = -1; + } - spin_lock(&mdsc->cap_dirty_lock); - if (!list_empty(&ci->i_dirty_item)) { - dout(" moving %p back to cap_dirty\n", inode); - list_move(&ci->i_dirty_item, &mdsc->cap_dirty); + dout("handle_cap_import inode %p ci %p mds%d mseq %d peer %d\n", + inode, ci, mds, mseq, peer); + + spin_lock(&ci->i_ceph_lock); + cap = peer >= 0 ? __get_cap_for_mds(ci, peer) : NULL; + if (cap && cap->cap_id == p_cap_id) { + dout(" remove export cap %p mds%d flags %d\n", + cap, peer, ph->flags); + if ((ph->flags & CEPH_CAP_FLAG_AUTH) && + (cap->seq != le32_to_cpu(ph->seq) || + cap->mseq != le32_to_cpu(ph->mseq))) { + pr_err("handle_cap_import: mismatched seq/mseq: " + "ino (%llx.%llx) mds%d seq %d mseq %d " + "importer mds%d has peer seq %d mseq %d\n", + ceph_vinop(inode), peer, cap->seq, + cap->mseq, mds, le32_to_cpu(ph->seq), + le32_to_cpu(ph->mseq)); } - spin_unlock(&mdsc->cap_dirty_lock); - } else { - dout("handle_cap_import inode %p ci %p mds%d mseq %d\n", - inode, ci, mds, mseq); + ci->i_cap_exporting_issued = cap->issued; + __ceph_remove_cap(cap, (ph->flags & CEPH_CAP_FLAG_RELEASE)); } + /* make sure we re-request max_size, if necessary */ + ci->i_wanted_max_size = 0; + ci->i_requested_max_size = 0; + spin_unlock(&ci->i_ceph_lock); + down_write(&mdsc->snap_rwsem); ceph_update_snap_trace(mdsc, snaptrace, snaptrace+snaptrace_len, false); @@ -2853,11 +2958,6 @@ static void handle_cap_import(struct ceph_mds_client *mdsc, kick_flushing_inode_caps(mdsc, session, inode); up_read(&mdsc->snap_rwsem); - /* make sure we re-request max_size, if necessary */ - spin_lock(&ci->i_ceph_lock); - ci->i_wanted_max_size = 0; /* reset */ - ci->i_requested_max_size = 0; - spin_unlock(&ci->i_ceph_lock); } /* @@ -2875,6 +2975,7 @@ void ceph_handle_caps(struct ceph_mds_session *session, struct ceph_inode_info *ci; struct ceph_cap *cap; struct ceph_mds_caps *h; + struct ceph_mds_cap_peer *peer = NULL; int mds = session->s_mds; int op; u32 seq, mseq; @@ -2885,12 +2986,13 @@ void ceph_handle_caps(struct ceph_mds_session *session, void *snaptrace; size_t snaptrace_len; void *flock; + void *end; u32 flock_len; - int open_target_sessions = 0; dout("handle_caps from mds%d\n", mds); /* decode */ + end = msg->front.iov_base + msg->front.iov_len; tid = le64_to_cpu(msg->hdr.tid); if (msg->front.iov_len < sizeof(*h)) goto bad; @@ -2908,17 +3010,28 @@ void ceph_handle_caps(struct ceph_mds_session *session, snaptrace_len = le32_to_cpu(h->snap_trace_len); if (le16_to_cpu(msg->hdr.version) >= 2) { - void *p, *end; - - p = snaptrace + snaptrace_len; - end = msg->front.iov_base + msg->front.iov_len; + void *p = snaptrace + snaptrace_len; ceph_decode_32_safe(&p, end, flock_len, bad); + if (p + flock_len > end) + goto bad; flock = p; } else { flock = NULL; flock_len = 0; } + if (le16_to_cpu(msg->hdr.version) >= 3) { + if (op == CEPH_CAP_OP_IMPORT) { + void *p = flock + flock_len; + if (p + sizeof(*peer) > end) + goto bad; + peer = p; + } else if (op == CEPH_CAP_OP_EXPORT) { + /* recorded in unused fields */ + peer = (void *)&h->size; + } + } + mutex_lock(&session->s_mutex); session->s_seq++; dout(" mds%d seq %lld cap seq %u\n", session->s_mds, session->s_seq, @@ -2951,11 +3064,11 @@ void ceph_handle_caps(struct ceph_mds_session *session, goto done; case CEPH_CAP_OP_EXPORT: - handle_cap_export(inode, h, session, &open_target_sessions); - goto done; + handle_cap_export(inode, h, peer, session); + goto done_unlocked; case CEPH_CAP_OP_IMPORT: - handle_cap_import(mdsc, inode, h, session, + handle_cap_import(mdsc, inode, h, peer, session, snaptrace, snaptrace_len); } @@ -3007,8 +3120,6 @@ done: done_unlocked: if (inode) iput(inode); - if (open_target_sessions) - ceph_mdsc_open_export_target_sessions(mdsc, session); return; bad: diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c index 6d59006bfa27..16b54aa31f08 100644 --- a/fs/ceph/debugfs.c +++ b/fs/ceph/debugfs.c @@ -93,6 +93,8 @@ static int mdsc_show(struct seq_file *s, void *p) } else if (req->r_path1) { seq_printf(s, " #%llx/%s", req->r_ino1.ino, req->r_path1); + } else { + seq_printf(s, " #%llx", req->r_ino1.ino); } if (req->r_old_dentry) { @@ -102,7 +104,8 @@ static int mdsc_show(struct seq_file *s, void *p) path = NULL; spin_lock(&req->r_old_dentry->d_lock); seq_printf(s, " #%llx/%.*s (%s)", - ceph_ino(req->r_old_dentry_dir), + req->r_old_dentry_dir ? + ceph_ino(req->r_old_dentry_dir) : 0, req->r_old_dentry->d_name.len, req->r_old_dentry->d_name.name, path ? path : ""); diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 2a0bcaeb189a..766410a12c2c 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -100,6 +100,14 @@ static unsigned fpos_off(loff_t p) return p & 0xffffffff; } +static int fpos_cmp(loff_t l, loff_t r) +{ + int v = ceph_frag_compare(fpos_frag(l), fpos_frag(r)); + if (v) + return v; + return (int)(fpos_off(l) - fpos_off(r)); +} + /* * When possible, we try to satisfy a readdir by peeking at the * dcache. We make this work by carefully ordering dentries on @@ -111,7 +119,8 @@ static unsigned fpos_off(loff_t p) * defined IFF we hold CEPH_CAP_FILE_SHARED (which will be revoked by * the MDS if/when the directory is modified). */ -static int __dcache_readdir(struct file *file, struct dir_context *ctx) +static int __dcache_readdir(struct file *file, struct dir_context *ctx, + u32 shared_gen) { struct ceph_file_info *fi = file->private_data; struct dentry *parent = file->f_dentry; @@ -125,8 +134,8 @@ static int __dcache_readdir(struct file *file, struct dir_context *ctx) last = fi->dentry; fi->dentry = NULL; - dout("__dcache_readdir %p at %llu (last %p)\n", dir, ctx->pos, - last); + dout("__dcache_readdir %p v%u at %llu (last %p)\n", + dir, shared_gen, ctx->pos, last); spin_lock(&parent->d_lock); @@ -153,10 +162,11 @@ more: goto out_unlock; } spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED); - if (!d_unhashed(dentry) && dentry->d_inode && + if (di->lease_shared_gen == shared_gen && + !d_unhashed(dentry) && dentry->d_inode && ceph_snap(dentry->d_inode) != CEPH_SNAPDIR && ceph_ino(dentry->d_inode) != CEPH_INO_CEPH && - ctx->pos <= di->offset) + fpos_cmp(ctx->pos, di->offset) <= 0) break; dout(" skipping %p %.*s at %llu (%llu)%s%s\n", dentry, dentry->d_name.len, dentry->d_name.name, di->offset, @@ -182,7 +192,7 @@ more: if (last) { /* remember our position */ fi->dentry = last; - fi->next_offset = di->offset; + fi->next_offset = fpos_off(di->offset); } dput(dentry); return 0; @@ -244,8 +254,6 @@ static int ceph_readdir(struct file *file, struct dir_context *ctx) int err; u32 ftype; struct ceph_mds_reply_info_parsed *rinfo; - const int max_entries = fsc->mount_options->max_readdir; - const int max_bytes = fsc->mount_options->max_readdir_bytes; dout("readdir %p file %p frag %u off %u\n", inode, file, frag, off); if (fi->flags & CEPH_F_ATEND) @@ -283,8 +291,9 @@ static int ceph_readdir(struct file *file, struct dir_context *ctx) ceph_snap(inode) != CEPH_SNAPDIR && __ceph_dir_is_complete(ci) && __ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1)) { + u32 shared_gen = ci->i_shared_gen; spin_unlock(&ci->i_ceph_lock); - err = __dcache_readdir(file, ctx); + err = __dcache_readdir(file, ctx, shared_gen); if (err != -EAGAIN) return err; } else { @@ -314,14 +323,16 @@ more: fi->last_readdir = NULL; } - /* requery frag tree, as the frag topology may have changed */ - frag = ceph_choose_frag(ceph_inode(inode), frag, NULL, NULL); - dout("readdir fetching %llx.%llx frag %x offset '%s'\n", ceph_vinop(inode), frag, fi->last_name); req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS); if (IS_ERR(req)) return PTR_ERR(req); + err = ceph_alloc_readdir_reply_buffer(req, inode); + if (err) { + ceph_mdsc_put_request(req); + return err; + } req->r_inode = inode; ihold(inode); req->r_dentry = dget(file->f_dentry); @@ -332,9 +343,6 @@ more: req->r_path2 = kstrdup(fi->last_name, GFP_NOFS); req->r_readdir_offset = fi->next_offset; req->r_args.readdir.frag = cpu_to_le32(frag); - req->r_args.readdir.max_entries = cpu_to_le32(max_entries); - req->r_args.readdir.max_bytes = cpu_to_le32(max_bytes); - req->r_num_caps = max_entries + 1; err = ceph_mdsc_do_request(mdsc, NULL, req); if (err < 0) { ceph_mdsc_put_request(req); @@ -361,9 +369,9 @@ more: fi->next_offset = 0; off = fi->next_offset; } + fi->frag = frag; fi->offset = fi->next_offset; fi->last_readdir = req; - fi->frag = frag; if (req->r_reply_info.dir_end) { kfree(fi->last_name); @@ -446,7 +454,7 @@ more: return 0; } -static void reset_readdir(struct ceph_file_info *fi) +static void reset_readdir(struct ceph_file_info *fi, unsigned frag) { if (fi->last_readdir) { ceph_mdsc_put_request(fi->last_readdir); @@ -454,7 +462,10 @@ static void reset_readdir(struct ceph_file_info *fi) } kfree(fi->last_name); fi->last_name = NULL; - fi->next_offset = 2; /* compensate for . and .. */ + if (ceph_frag_is_leftmost(frag)) + fi->next_offset = 2; /* compensate for . and .. */ + else + fi->next_offset = 0; if (fi->dentry) { dput(fi->dentry); fi->dentry = NULL; @@ -466,7 +477,7 @@ static loff_t ceph_dir_llseek(struct file *file, loff_t offset, int whence) { struct ceph_file_info *fi = file->private_data; struct inode *inode = file->f_mapping->host; - loff_t old_offset = offset; + loff_t old_offset = ceph_make_fpos(fi->frag, fi->next_offset); loff_t retval; mutex_lock(&inode->i_mutex); @@ -483,7 +494,7 @@ static loff_t ceph_dir_llseek(struct file *file, loff_t offset, int whence) goto out; } - if (offset >= 0 && offset <= inode->i_sb->s_maxbytes) { + if (offset >= 0) { if (offset != file->f_pos) { file->f_pos = offset; file->f_version = 0; @@ -496,14 +507,14 @@ static loff_t ceph_dir_llseek(struct file *file, loff_t offset, int whence) * seek to new frag, or seek prior to current chunk. */ if (offset == 0 || - fpos_frag(offset) != fpos_frag(old_offset) || + fpos_frag(offset) != fi->frag || fpos_off(offset) < fi->offset) { dout("dir_llseek dropping %p content\n", file); - reset_readdir(fi); + reset_readdir(fi, fpos_frag(offset)); } /* bump dir_release_count if we did a forward seek */ - if (offset > old_offset) + if (fpos_cmp(offset, old_offset) > 0) fi->dir_release_count--; } out: @@ -693,7 +704,10 @@ static int ceph_mknod(struct inode *dir, struct dentry *dentry, if (!err && !req->r_reply_info.head->is_dentry) err = ceph_handle_notrace_create(dir, dentry); ceph_mdsc_put_request(req); - if (err) + + if (!err) + ceph_init_acl(dentry, dentry->d_inode, dir); + else d_drop(dentry); return err; } @@ -731,7 +745,9 @@ static int ceph_symlink(struct inode *dir, struct dentry *dentry, if (!err && !req->r_reply_info.head->is_dentry) err = ceph_handle_notrace_create(dir, dentry); ceph_mdsc_put_request(req); - if (err) + if (!err) + ceph_init_acl(dentry, dentry->d_inode, dir); + else d_drop(dentry); return err; } @@ -772,7 +788,9 @@ static int ceph_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) err = ceph_handle_notrace_create(dir, dentry); ceph_mdsc_put_request(req); out: - if (err < 0) + if (!err) + ceph_init_acl(dentry, dentry->d_inode, dir); + else d_drop(dentry); return err; } @@ -797,8 +815,7 @@ static int ceph_link(struct dentry *old_dentry, struct inode *dir, } req->r_dentry = dget(dentry); req->r_num_caps = 2; - req->r_old_dentry = dget(old_dentry); /* or inode? hrm. */ - req->r_old_dentry_dir = ceph_get_dentry_parent_inode(old_dentry); + req->r_old_dentry = dget(old_dentry); req->r_locked_dir = dir; req->r_dentry_drop = CEPH_CAP_FILE_SHARED; req->r_dentry_unless = CEPH_CAP_FILE_EXCL; @@ -896,10 +913,11 @@ static int ceph_rename(struct inode *old_dir, struct dentry *old_dentry, req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_RENAME, USE_AUTH_MDS); if (IS_ERR(req)) return PTR_ERR(req); + ihold(old_dir); req->r_dentry = dget(new_dentry); req->r_num_caps = 2; req->r_old_dentry = dget(old_dentry); - req->r_old_dentry_dir = ceph_get_dentry_parent_inode(old_dentry); + req->r_old_dentry_dir = old_dir; req->r_locked_dir = new_dir; req->r_old_dentry_drop = CEPH_CAP_FILE_SHARED; req->r_old_dentry_unless = CEPH_CAP_FILE_EXCL; @@ -1037,14 +1055,19 @@ static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags) valid = 1; } else if (dentry_lease_is_valid(dentry) || dir_lease_is_valid(dir, dentry)) { - valid = 1; + if (dentry->d_inode) + valid = ceph_is_any_caps(dentry->d_inode); + else + valid = 1; } dout("d_revalidate %p %s\n", dentry, valid ? "valid" : "invalid"); - if (valid) + if (valid) { ceph_dentry_lru_touch(dentry); - else + } else { + ceph_dir_clear_complete(dir); d_drop(dentry); + } iput(dir); return valid; } @@ -1293,6 +1316,8 @@ const struct inode_operations ceph_dir_iops = { .getxattr = ceph_getxattr, .listxattr = ceph_listxattr, .removexattr = ceph_removexattr, + .get_acl = ceph_get_acl, + .set_acl = ceph_set_acl, .mknod = ceph_mknod, .symlink = ceph_symlink, .mkdir = ceph_mkdir, diff --git a/fs/ceph/export.c b/fs/ceph/export.c index 16796be53ca5..00d6af6a32ec 100644 --- a/fs/ceph/export.c +++ b/fs/ceph/export.c @@ -8,23 +8,6 @@ #include "mds_client.h" /* - * NFS export support - * - * NFS re-export of a ceph mount is, at present, only semireliable. - * The basic issue is that the Ceph architectures doesn't lend itself - * well to generating filehandles that will remain valid forever. - * - * So, we do our best. If you're lucky, your inode will be in the - * client's cache. If it's not, and you have a connectable fh, then - * the MDS server may be able to find it for you. Otherwise, you get - * ESTALE. - * - * There are ways to this more reliable, but in the non-connectable fh - * case, we won't every work perfectly, and in the connectable case, - * some changes are needed on the MDS side to work better. - */ - -/* * Basic fh */ struct ceph_nfs_fh { @@ -32,22 +15,12 @@ struct ceph_nfs_fh { } __attribute__ ((packed)); /* - * Larger 'connectable' fh that includes parent ino and name hash. - * Use this whenever possible, as it works more reliably. + * Larger fh that includes parent ino. */ struct ceph_nfs_confh { u64 ino, parent_ino; - u32 parent_name_hash; } __attribute__ ((packed)); -/* - * The presence of @parent_inode here tells us whether NFS wants a - * connectable file handle. However, we want to make a connectionable - * file handle unconditionally so that the MDS gets as much of a hint - * as possible. That means we only use @parent_dentry to indicate - * whether nfsd wants a connectable fh, and whether we should indicate - * failure from a too-small @max_len. - */ static int ceph_encode_fh(struct inode *inode, u32 *rawfh, int *max_len, struct inode *parent_inode) { @@ -56,54 +29,36 @@ static int ceph_encode_fh(struct inode *inode, u32 *rawfh, int *max_len, struct ceph_nfs_confh *cfh = (void *)rawfh; int connected_handle_length = sizeof(*cfh)/4; int handle_length = sizeof(*fh)/4; - struct dentry *dentry; - struct dentry *parent; /* don't re-export snaps */ if (ceph_snap(inode) != CEPH_NOSNAP) return -EINVAL; - dentry = d_find_alias(inode); + if (parent_inode && (*max_len < connected_handle_length)) { + *max_len = connected_handle_length; + return FILEID_INVALID; + } else if (*max_len < handle_length) { + *max_len = handle_length; + return FILEID_INVALID; + } - /* if we found an alias, generate a connectable fh */ - if (*max_len >= connected_handle_length && dentry) { - dout("encode_fh %p connectable\n", dentry); - spin_lock(&dentry->d_lock); - parent = dentry->d_parent; + if (parent_inode) { + dout("encode_fh %llx with parent %llx\n", + ceph_ino(inode), ceph_ino(parent_inode)); cfh->ino = ceph_ino(inode); - cfh->parent_ino = ceph_ino(parent->d_inode); - cfh->parent_name_hash = ceph_dentry_hash(parent->d_inode, - dentry); + cfh->parent_ino = ceph_ino(parent_inode); *max_len = connected_handle_length; - type = 2; - spin_unlock(&dentry->d_lock); - } else if (*max_len >= handle_length) { - if (parent_inode) { - /* nfsd wants connectable */ - *max_len = connected_handle_length; - type = FILEID_INVALID; - } else { - dout("encode_fh %p\n", dentry); - fh->ino = ceph_ino(inode); - *max_len = handle_length; - type = 1; - } + type = FILEID_INO32_GEN_PARENT; } else { + dout("encode_fh %llx\n", ceph_ino(inode)); + fh->ino = ceph_ino(inode); *max_len = handle_length; - type = FILEID_INVALID; + type = FILEID_INO32_GEN; } - if (dentry) - dput(dentry); return type; } -/* - * convert regular fh to dentry - * - * FIXME: we should try harder by querying the mds for the ino. - */ -static struct dentry *__fh_to_dentry(struct super_block *sb, - struct ceph_nfs_fh *fh, int fh_len) +static struct dentry *__fh_to_dentry(struct super_block *sb, u64 ino) { struct ceph_mds_client *mdsc = ceph_sb_to_client(sb)->mdsc; struct inode *inode; @@ -111,11 +66,7 @@ static struct dentry *__fh_to_dentry(struct super_block *sb, struct ceph_vino vino; int err; - if (fh_len < sizeof(*fh) / 4) - return ERR_PTR(-ESTALE); - - dout("__fh_to_dentry %llx\n", fh->ino); - vino.ino = fh->ino; + vino.ino = ino; vino.snap = CEPH_NOSNAP; inode = ceph_find_inode(sb, vino); if (!inode) { @@ -139,139 +90,161 @@ static struct dentry *__fh_to_dentry(struct super_block *sb, dentry = d_obtain_alias(inode); if (IS_ERR(dentry)) { - pr_err("fh_to_dentry %llx -- inode %p but ENOMEM\n", - fh->ino, inode); iput(inode); return dentry; } err = ceph_init_dentry(dentry); if (err < 0) { - iput(inode); + dput(dentry); return ERR_PTR(err); } - dout("__fh_to_dentry %llx %p dentry %p\n", fh->ino, inode, dentry); + dout("__fh_to_dentry %llx %p dentry %p\n", ino, inode, dentry); return dentry; } /* - * convert connectable fh to dentry + * convert regular fh to dentry */ -static struct dentry *__cfh_to_dentry(struct super_block *sb, - struct ceph_nfs_confh *cfh, int fh_len) +static struct dentry *ceph_fh_to_dentry(struct super_block *sb, + struct fid *fid, + int fh_len, int fh_type) +{ + struct ceph_nfs_fh *fh = (void *)fid->raw; + + if (fh_type != FILEID_INO32_GEN && + fh_type != FILEID_INO32_GEN_PARENT) + return NULL; + if (fh_len < sizeof(*fh) / 4) + return NULL; + + dout("fh_to_dentry %llx\n", fh->ino); + return __fh_to_dentry(sb, fh->ino); +} + +static struct dentry *__get_parent(struct super_block *sb, + struct dentry *child, u64 ino) { struct ceph_mds_client *mdsc = ceph_sb_to_client(sb)->mdsc; + struct ceph_mds_request *req; struct inode *inode; struct dentry *dentry; - struct ceph_vino vino; int err; - if (fh_len < sizeof(*cfh) / 4) - return ERR_PTR(-ESTALE); - - dout("__cfh_to_dentry %llx (%llx/%x)\n", - cfh->ino, cfh->parent_ino, cfh->parent_name_hash); - - vino.ino = cfh->ino; - vino.snap = CEPH_NOSNAP; - inode = ceph_find_inode(sb, vino); - if (!inode) { - struct ceph_mds_request *req; - - req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_LOOKUPHASH, - USE_ANY_MDS); - if (IS_ERR(req)) - return ERR_CAST(req); + req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_LOOKUPPARENT, + USE_ANY_MDS); + if (IS_ERR(req)) + return ERR_CAST(req); - req->r_ino1 = vino; - req->r_ino2.ino = cfh->parent_ino; - req->r_ino2.snap = CEPH_NOSNAP; - req->r_path2 = kmalloc(16, GFP_NOFS); - snprintf(req->r_path2, 16, "%d", cfh->parent_name_hash); - req->r_num_caps = 1; - err = ceph_mdsc_do_request(mdsc, NULL, req); - inode = req->r_target_inode; - if (inode) - ihold(inode); - ceph_mdsc_put_request(req); - if (!inode) - return ERR_PTR(err ? err : -ESTALE); + if (child) { + req->r_inode = child->d_inode; + ihold(child->d_inode); + } else { + req->r_ino1 = (struct ceph_vino) { + .ino = ino, + .snap = CEPH_NOSNAP, + }; } + req->r_num_caps = 1; + err = ceph_mdsc_do_request(mdsc, NULL, req); + inode = req->r_target_inode; + if (inode) + ihold(inode); + ceph_mdsc_put_request(req); + if (!inode) + return ERR_PTR(-ENOENT); dentry = d_obtain_alias(inode); if (IS_ERR(dentry)) { - pr_err("cfh_to_dentry %llx -- inode %p but ENOMEM\n", - cfh->ino, inode); iput(inode); return dentry; } err = ceph_init_dentry(dentry); if (err < 0) { - iput(inode); + dput(dentry); return ERR_PTR(err); } - dout("__cfh_to_dentry %llx %p dentry %p\n", cfh->ino, inode, dentry); + dout("__get_parent ino %llx parent %p ino %llx.%llx\n", + child ? ceph_ino(child->d_inode) : ino, + dentry, ceph_vinop(inode)); return dentry; } -static struct dentry *ceph_fh_to_dentry(struct super_block *sb, struct fid *fid, - int fh_len, int fh_type) +struct dentry *ceph_get_parent(struct dentry *child) { - if (fh_type == 1) - return __fh_to_dentry(sb, (struct ceph_nfs_fh *)fid->raw, - fh_len); - else - return __cfh_to_dentry(sb, (struct ceph_nfs_confh *)fid->raw, - fh_len); + /* don't re-export snaps */ + if (ceph_snap(child->d_inode) != CEPH_NOSNAP) + return ERR_PTR(-EINVAL); + + dout("get_parent %p ino %llx.%llx\n", + child, ceph_vinop(child->d_inode)); + return __get_parent(child->d_sb, child, 0); } /* - * get parent, if possible. - * - * FIXME: we could do better by querying the mds to discover the - * parent. + * convert regular fh to parent */ static struct dentry *ceph_fh_to_parent(struct super_block *sb, - struct fid *fid, + struct fid *fid, int fh_len, int fh_type) { struct ceph_nfs_confh *cfh = (void *)fid->raw; - struct ceph_vino vino; - struct inode *inode; struct dentry *dentry; - int err; - if (fh_type == 1) - return ERR_PTR(-ESTALE); + if (fh_type != FILEID_INO32_GEN_PARENT) + return NULL; if (fh_len < sizeof(*cfh) / 4) - return ERR_PTR(-ESTALE); + return NULL; - pr_debug("fh_to_parent %llx/%d\n", cfh->parent_ino, - cfh->parent_name_hash); + dout("fh_to_parent %llx\n", cfh->parent_ino); + dentry = __get_parent(sb, NULL, cfh->ino); + if (IS_ERR(dentry) && PTR_ERR(dentry) == -ENOENT) + dentry = __fh_to_dentry(sb, cfh->parent_ino); + return dentry; +} - vino.ino = cfh->ino; - vino.snap = CEPH_NOSNAP; - inode = ceph_find_inode(sb, vino); - if (!inode) - return ERR_PTR(-ESTALE); +static int ceph_get_name(struct dentry *parent, char *name, + struct dentry *child) +{ + struct ceph_mds_client *mdsc; + struct ceph_mds_request *req; + int err; - dentry = d_obtain_alias(inode); - if (IS_ERR(dentry)) { - pr_err("fh_to_parent %llx -- inode %p but ENOMEM\n", - cfh->ino, inode); - iput(inode); - return dentry; - } - err = ceph_init_dentry(dentry); - if (err < 0) { - iput(inode); - return ERR_PTR(err); + mdsc = ceph_inode_to_client(child->d_inode)->mdsc; + req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_LOOKUPNAME, + USE_ANY_MDS); + if (IS_ERR(req)) + return PTR_ERR(req); + + mutex_lock(&parent->d_inode->i_mutex); + + req->r_inode = child->d_inode; + ihold(child->d_inode); + req->r_ino2 = ceph_vino(parent->d_inode); + req->r_locked_dir = parent->d_inode; + req->r_num_caps = 2; + err = ceph_mdsc_do_request(mdsc, NULL, req); + + mutex_unlock(&parent->d_inode->i_mutex); + + if (!err) { + struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; + memcpy(name, rinfo->dname, rinfo->dname_len); + name[rinfo->dname_len] = 0; + dout("get_name %p ino %llx.%llx name %s\n", + child, ceph_vinop(child->d_inode), name); + } else { + dout("get_name %p ino %llx.%llx err %d\n", + child, ceph_vinop(child->d_inode), err); } - dout("fh_to_parent %llx %p dentry %p\n", cfh->ino, inode, dentry); - return dentry; + + ceph_mdsc_put_request(req); + return err; } const struct export_operations ceph_export_ops = { .encode_fh = ceph_encode_fh, .fh_to_dentry = ceph_fh_to_dentry, .fh_to_parent = ceph_fh_to_parent, + .get_parent = ceph_get_parent, + .get_name = ceph_get_name, }; diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 3de89829e2a1..66075a4ad979 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -210,7 +210,7 @@ int ceph_open(struct inode *inode, struct file *file) ihold(inode); req->r_num_caps = 1; - if (flags & (O_CREAT|O_TRUNC)) + if (flags & O_CREAT) parent_inode = ceph_get_dentry_parent_inode(file->f_dentry); err = ceph_mdsc_do_request(mdsc, parent_inode, req); iput(parent_inode); @@ -286,12 +286,14 @@ int ceph_atomic_open(struct inode *dir, struct dentry *dentry, } else { dout("atomic_open finish_open on dn %p\n", dn); if (req->r_op == CEPH_MDS_OP_CREATE && req->r_reply_info.has_create_ino) { + ceph_init_acl(dentry, dentry->d_inode, dir); *opened |= FILE_CREATED; } err = finish_open(file, dentry, ceph_open, opened); } - out_err: + if (!req->r_err && req->r_target_inode) + ceph_put_fmode(ceph_inode(req->r_target_inode), req->r_fmode); ceph_mdsc_put_request(req); dout("atomic_open result=%d\n", err); return err; @@ -408,51 +410,92 @@ more: * * If the read spans object boundary, just do multiple reads. */ -static ssize_t ceph_sync_read(struct file *file, char __user *data, - unsigned len, loff_t *poff, int *checkeof) +static ssize_t ceph_sync_read(struct kiocb *iocb, struct iov_iter *i, + int *checkeof) { + struct file *file = iocb->ki_filp; struct inode *inode = file_inode(file); struct page **pages; - u64 off = *poff; + u64 off = iocb->ki_pos; int num_pages, ret; + size_t len = i->count; - dout("sync_read on file %p %llu~%u %s\n", file, off, len, + dout("sync_read on file %p %llu~%u %s\n", file, off, + (unsigned)len, (file->f_flags & O_DIRECT) ? "O_DIRECT" : ""); - - if (file->f_flags & O_DIRECT) { - num_pages = calc_pages_for((unsigned long)data, len); - pages = ceph_get_direct_page_vector(data, num_pages, true); - } else { - num_pages = calc_pages_for(off, len); - pages = ceph_alloc_page_vector(num_pages, GFP_NOFS); - } - if (IS_ERR(pages)) - return PTR_ERR(pages); - /* * flush any page cache pages in this range. this * will make concurrent normal and sync io slow, * but it will at least behave sensibly when they are * in sequence. */ - ret = filemap_write_and_wait(inode->i_mapping); + ret = filemap_write_and_wait_range(inode->i_mapping, off, + off + len); if (ret < 0) - goto done; + return ret; - ret = striped_read(inode, off, len, pages, num_pages, checkeof, - file->f_flags & O_DIRECT, - (unsigned long)data & ~PAGE_MASK); + if (file->f_flags & O_DIRECT) { + while (iov_iter_count(i)) { + void __user *data = i->iov[0].iov_base + i->iov_offset; + size_t len = i->iov[0].iov_len - i->iov_offset; + + num_pages = calc_pages_for((unsigned long)data, len); + pages = ceph_get_direct_page_vector(data, + num_pages, true); + if (IS_ERR(pages)) + return PTR_ERR(pages); + + ret = striped_read(inode, off, len, + pages, num_pages, checkeof, + 1, (unsigned long)data & ~PAGE_MASK); + ceph_put_page_vector(pages, num_pages, true); + + if (ret <= 0) + break; + off += ret; + iov_iter_advance(i, ret); + if (ret < len) + break; + } + } else { + num_pages = calc_pages_for(off, len); + pages = ceph_alloc_page_vector(num_pages, GFP_NOFS); + if (IS_ERR(pages)) + return PTR_ERR(pages); + ret = striped_read(inode, off, len, pages, + num_pages, checkeof, 0, 0); + if (ret > 0) { + int l, k = 0; + size_t left = len = ret; + + while (left) { + void __user *data = i->iov[0].iov_base + + i->iov_offset; + l = min(i->iov[0].iov_len - i->iov_offset, + left); + + ret = ceph_copy_page_vector_to_user(&pages[k], + data, off, + l); + if (ret > 0) { + iov_iter_advance(i, ret); + left -= ret; + off += ret; + k = calc_pages_for(iocb->ki_pos, + len - left + 1) - 1; + BUG_ON(k >= num_pages && left); + } else + break; + } + } + ceph_release_page_vector(pages, num_pages); + } - if (ret >= 0 && (file->f_flags & O_DIRECT) == 0) - ret = ceph_copy_page_vector_to_user(pages, data, off, ret); - if (ret >= 0) - *poff = off + ret; + if (off > iocb->ki_pos) { + ret = off - iocb->ki_pos; + iocb->ki_pos = off; + } -done: - if (file->f_flags & O_DIRECT) - ceph_put_page_vector(pages, num_pages, true); - else - ceph_release_page_vector(pages, num_pages); dout("sync_read result %d\n", ret); return ret; } @@ -489,83 +532,79 @@ static void ceph_sync_write_unsafe(struct ceph_osd_request *req, bool unsafe) } } + /* - * Synchronous write, straight from __user pointer or user pages (if - * O_DIRECT). + * Synchronous write, straight from __user pointer or user pages. * * If write spans object boundary, just do multiple writes. (For a * correct atomic write, we should e.g. take write locks on all * objects, rollback on failure, etc.) */ -static ssize_t ceph_sync_write(struct file *file, const char __user *data, - size_t left, loff_t pos, loff_t *ppos) +static ssize_t +ceph_sync_direct_write(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, size_t count) { + struct file *file = iocb->ki_filp; struct inode *inode = file_inode(file); struct ceph_inode_info *ci = ceph_inode(inode); struct ceph_fs_client *fsc = ceph_inode_to_client(inode); struct ceph_snap_context *snapc; struct ceph_vino vino; struct ceph_osd_request *req; - int num_ops = 1; struct page **pages; int num_pages; - u64 len; int written = 0; int flags; int check_caps = 0; - int page_align, io_align; - unsigned long buf_align; + int page_align; int ret; struct timespec mtime = CURRENT_TIME; - bool own_pages = false; + loff_t pos = iocb->ki_pos; + struct iov_iter i; if (ceph_snap(file_inode(file)) != CEPH_NOSNAP) return -EROFS; - dout("sync_write on file %p %lld~%u %s\n", file, pos, - (unsigned)left, (file->f_flags & O_DIRECT) ? "O_DIRECT" : ""); + dout("sync_direct_write on file %p %lld~%u\n", file, pos, + (unsigned)count); - ret = filemap_write_and_wait_range(inode->i_mapping, pos, pos + left); + ret = filemap_write_and_wait_range(inode->i_mapping, pos, pos + count); if (ret < 0) return ret; ret = invalidate_inode_pages2_range(inode->i_mapping, pos >> PAGE_CACHE_SHIFT, - (pos + left) >> PAGE_CACHE_SHIFT); + (pos + count) >> PAGE_CACHE_SHIFT); if (ret < 0) dout("invalidate_inode_pages2_range returned %d\n", ret); flags = CEPH_OSD_FLAG_ORDERSNAP | CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE; - if ((file->f_flags & (O_SYNC|O_DIRECT)) == 0) - flags |= CEPH_OSD_FLAG_ACK; - else - num_ops++; /* Also include a 'startsync' command. */ - - /* - * we may need to do multiple writes here if we span an object - * boundary. this isn't atomic, unfortunately. :( - */ -more: - io_align = pos & ~PAGE_MASK; - buf_align = (unsigned long)data & ~PAGE_MASK; - len = left; - snapc = ci->i_snap_realm->cached_context; - vino = ceph_vino(inode); - req = ceph_osdc_new_request(&fsc->client->osdc, &ci->i_layout, - vino, pos, &len, num_ops, - CEPH_OSD_OP_WRITE, flags, snapc, - ci->i_truncate_seq, ci->i_truncate_size, - false); - if (IS_ERR(req)) - return PTR_ERR(req); + iov_iter_init(&i, iov, nr_segs, count, 0); + + while (iov_iter_count(&i) > 0) { + void __user *data = i.iov->iov_base + i.iov_offset; + u64 len = i.iov->iov_len - i.iov_offset; + + page_align = (unsigned long)data & ~PAGE_MASK; + + snapc = ci->i_snap_realm->cached_context; + vino = ceph_vino(inode); + req = ceph_osdc_new_request(&fsc->client->osdc, &ci->i_layout, + vino, pos, &len, + 2,/*include a 'startsync' command*/ + CEPH_OSD_OP_WRITE, flags, snapc, + ci->i_truncate_seq, + ci->i_truncate_size, + false); + if (IS_ERR(req)) { + ret = PTR_ERR(req); + goto out; + } - /* write from beginning of first page, regardless of io alignment */ - page_align = file->f_flags & O_DIRECT ? buf_align : io_align; - num_pages = calc_pages_for(page_align, len); - if (file->f_flags & O_DIRECT) { + num_pages = calc_pages_for(page_align, len); pages = ceph_get_direct_page_vector(data, num_pages, false); if (IS_ERR(pages)) { ret = PTR_ERR(pages); @@ -577,60 +616,175 @@ more: * may block. */ truncate_inode_pages_range(inode->i_mapping, pos, - (pos+len) | (PAGE_CACHE_SIZE-1)); - } else { + (pos+len) | (PAGE_CACHE_SIZE-1)); + osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, + false, false); + + /* BUG_ON(vino.snap != CEPH_NOSNAP); */ + ceph_osdc_build_request(req, pos, snapc, vino.snap, &mtime); + + ret = ceph_osdc_start_request(&fsc->client->osdc, req, false); + if (!ret) + ret = ceph_osdc_wait_request(&fsc->client->osdc, req); + + ceph_put_page_vector(pages, num_pages, false); + +out: + ceph_osdc_put_request(req); + if (ret == 0) { + pos += len; + written += len; + iov_iter_advance(&i, (size_t)len); + + if (pos > i_size_read(inode)) { + check_caps = ceph_inode_set_size(inode, pos); + if (check_caps) + ceph_check_caps(ceph_inode(inode), + CHECK_CAPS_AUTHONLY, + NULL); + } + } else + break; + } + + if (ret != -EOLDSNAPC && written > 0) { + iocb->ki_pos = pos; + ret = written; + } + return ret; +} + + +/* + * Synchronous write, straight from __user pointer or user pages. + * + * If write spans object boundary, just do multiple writes. (For a + * correct atomic write, we should e.g. take write locks on all + * objects, rollback on failure, etc.) + */ +static ssize_t ceph_sync_write(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, size_t count) +{ + struct file *file = iocb->ki_filp; + struct inode *inode = file_inode(file); + struct ceph_inode_info *ci = ceph_inode(inode); + struct ceph_fs_client *fsc = ceph_inode_to_client(inode); + struct ceph_snap_context *snapc; + struct ceph_vino vino; + struct ceph_osd_request *req; + struct page **pages; + u64 len; + int num_pages; + int written = 0; + int flags; + int check_caps = 0; + int ret; + struct timespec mtime = CURRENT_TIME; + loff_t pos = iocb->ki_pos; + struct iov_iter i; + + if (ceph_snap(file_inode(file)) != CEPH_NOSNAP) + return -EROFS; + + dout("sync_write on file %p %lld~%u\n", file, pos, (unsigned)count); + + ret = filemap_write_and_wait_range(inode->i_mapping, pos, pos + count); + if (ret < 0) + return ret; + + ret = invalidate_inode_pages2_range(inode->i_mapping, + pos >> PAGE_CACHE_SHIFT, + (pos + count) >> PAGE_CACHE_SHIFT); + if (ret < 0) + dout("invalidate_inode_pages2_range returned %d\n", ret); + + flags = CEPH_OSD_FLAG_ORDERSNAP | + CEPH_OSD_FLAG_ONDISK | + CEPH_OSD_FLAG_WRITE | + CEPH_OSD_FLAG_ACK; + + iov_iter_init(&i, iov, nr_segs, count, 0); + + while ((len = iov_iter_count(&i)) > 0) { + size_t left; + int n; + + snapc = ci->i_snap_realm->cached_context; + vino = ceph_vino(inode); + req = ceph_osdc_new_request(&fsc->client->osdc, &ci->i_layout, + vino, pos, &len, 1, + CEPH_OSD_OP_WRITE, flags, snapc, + ci->i_truncate_seq, + ci->i_truncate_size, + false); + if (IS_ERR(req)) { + ret = PTR_ERR(req); + goto out; + } + + /* + * write from beginning of first page, + * regardless of io alignment + */ + num_pages = (len + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT; + pages = ceph_alloc_page_vector(num_pages, GFP_NOFS); if (IS_ERR(pages)) { ret = PTR_ERR(pages); goto out; } - ret = ceph_copy_user_to_page_vector(pages, data, pos, len); + + left = len; + for (n = 0; n < num_pages; n++) { + size_t plen = min_t(size_t, left, PAGE_SIZE); + ret = iov_iter_copy_from_user(pages[n], &i, 0, plen); + if (ret != plen) { + ret = -EFAULT; + break; + } + left -= ret; + iov_iter_advance(&i, ret); + } + if (ret < 0) { ceph_release_page_vector(pages, num_pages); goto out; } - if ((file->f_flags & O_SYNC) == 0) { - /* get a second commit callback */ - req->r_unsafe_callback = ceph_sync_write_unsafe; - req->r_inode = inode; - own_pages = true; - } - } - osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, - false, own_pages); + /* get a second commit callback */ + req->r_unsafe_callback = ceph_sync_write_unsafe; + req->r_inode = inode; - /* BUG_ON(vino.snap != CEPH_NOSNAP); */ - ceph_osdc_build_request(req, pos, snapc, vino.snap, &mtime); + osd_req_op_extent_osd_data_pages(req, 0, pages, len, 0, + false, true); - ret = ceph_osdc_start_request(&fsc->client->osdc, req, false); - if (!ret) - ret = ceph_osdc_wait_request(&fsc->client->osdc, req); + /* BUG_ON(vino.snap != CEPH_NOSNAP); */ + ceph_osdc_build_request(req, pos, snapc, vino.snap, &mtime); - if (file->f_flags & O_DIRECT) - ceph_put_page_vector(pages, num_pages, false); - else if (file->f_flags & O_SYNC) - ceph_release_page_vector(pages, num_pages); + ret = ceph_osdc_start_request(&fsc->client->osdc, req, false); + if (!ret) + ret = ceph_osdc_wait_request(&fsc->client->osdc, req); out: - ceph_osdc_put_request(req); - if (ret == 0) { - pos += len; - written += len; - left -= len; - data += len; - if (left) - goto more; + ceph_osdc_put_request(req); + if (ret == 0) { + pos += len; + written += len; + + if (pos > i_size_read(inode)) { + check_caps = ceph_inode_set_size(inode, pos); + if (check_caps) + ceph_check_caps(ceph_inode(inode), + CHECK_CAPS_AUTHONLY, + NULL); + } + } else + break; + } + if (ret != -EOLDSNAPC && written > 0) { ret = written; - *ppos = pos; - if (pos > i_size_read(inode)) - check_caps = ceph_inode_set_size(inode, pos); - if (check_caps) - ceph_check_caps(ceph_inode(inode), CHECK_CAPS_AUTHONLY, - NULL); - } else if (ret != -EOLDSNAPC && written > 0) { - ret = written; + iocb->ki_pos = pos; } return ret; } @@ -647,55 +801,84 @@ static ssize_t ceph_aio_read(struct kiocb *iocb, const struct iovec *iov, { struct file *filp = iocb->ki_filp; struct ceph_file_info *fi = filp->private_data; - loff_t *ppos = &iocb->ki_pos; - size_t len = iov->iov_len; + size_t len = iocb->ki_nbytes; struct inode *inode = file_inode(filp); struct ceph_inode_info *ci = ceph_inode(inode); - void __user *base = iov->iov_base; ssize_t ret; int want, got = 0; int checkeof = 0, read = 0; - dout("aio_read %p %llx.%llx %llu~%u trying to get caps on %p\n", - inode, ceph_vinop(inode), pos, (unsigned)len, inode); again: + dout("aio_read %p %llx.%llx %llu~%u trying to get caps on %p\n", + inode, ceph_vinop(inode), iocb->ki_pos, (unsigned)len, inode); + if (fi->fmode & CEPH_FILE_MODE_LAZY) want = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO; else want = CEPH_CAP_FILE_CACHE; ret = ceph_get_caps(ci, CEPH_CAP_FILE_RD, want, &got, -1); if (ret < 0) - goto out; - dout("aio_read %p %llx.%llx %llu~%u got cap refs on %s\n", - inode, ceph_vinop(inode), pos, (unsigned)len, - ceph_cap_string(got)); + return ret; if ((got & (CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO)) == 0 || (iocb->ki_filp->f_flags & O_DIRECT) || - (fi->flags & CEPH_F_SYNC)) + (fi->flags & CEPH_F_SYNC)) { + struct iov_iter i; + + dout("aio_sync_read %p %llx.%llx %llu~%u got cap refs on %s\n", + inode, ceph_vinop(inode), iocb->ki_pos, (unsigned)len, + ceph_cap_string(got)); + + if (!read) { + ret = generic_segment_checks(iov, &nr_segs, + &len, VERIFY_WRITE); + if (ret) + goto out; + } + + iov_iter_init(&i, iov, nr_segs, len, read); + /* hmm, this isn't really async... */ - ret = ceph_sync_read(filp, base, len, ppos, &checkeof); - else - ret = generic_file_aio_read(iocb, iov, nr_segs, pos); + ret = ceph_sync_read(iocb, &i, &checkeof); + } else { + /* + * We can't modify the content of iov, + * so we only read from beginning. + */ + if (read) { + iocb->ki_pos = pos; + len = iocb->ki_nbytes; + read = 0; + } + dout("aio_read %p %llx.%llx %llu~%u got cap refs on %s\n", + inode, ceph_vinop(inode), pos, (unsigned)len, + ceph_cap_string(got)); + ret = generic_file_aio_read(iocb, iov, nr_segs, pos); + } out: dout("aio_read %p %llx.%llx dropping cap refs on %s = %d\n", inode, ceph_vinop(inode), ceph_cap_string(got), (int)ret); ceph_put_cap_refs(ci, got); if (checkeof && ret >= 0) { - int statret = ceph_do_getattr(inode, CEPH_STAT_CAP_SIZE); + int statret = ceph_do_getattr(inode, + CEPH_STAT_CAP_SIZE); /* hit EOF or hole? */ - if (statret == 0 && *ppos < inode->i_size) { - dout("aio_read sync_read hit hole, ppos %lld < size %lld, reading more\n", *ppos, inode->i_size); + if (statret == 0 && iocb->ki_pos < inode->i_size && + ret < len) { + dout("sync_read hit hole, ppos %lld < size %lld" + ", reading more\n", iocb->ki_pos, + inode->i_size); + read += ret; - base += ret; len -= ret; checkeof = 0; goto again; } } + if (ret >= 0) ret += read; @@ -772,11 +955,13 @@ retry_snap: inode, ceph_vinop(inode), pos, count, ceph_cap_string(got)); if ((got & (CEPH_CAP_FILE_BUFFER|CEPH_CAP_FILE_LAZYIO)) == 0 || - (iocb->ki_filp->f_flags & O_DIRECT) || - (fi->flags & CEPH_F_SYNC)) { + (file->f_flags & O_DIRECT) || (fi->flags & CEPH_F_SYNC)) { mutex_unlock(&inode->i_mutex); - written = ceph_sync_write(file, iov->iov_base, count, - pos, &iocb->ki_pos); + if (file->f_flags & O_DIRECT) + written = ceph_sync_direct_write(iocb, iov, + nr_segs, count); + else + written = ceph_sync_write(iocb, iov, nr_segs, count); if (written == -EOLDSNAPC) { dout("aio_write %p %llx.%llx %llu~%u" "got EOLDSNAPC, retrying\n", @@ -786,6 +971,7 @@ retry_snap: goto retry_snap; } } else { + loff_t old_size = inode->i_size; /* * No need to acquire the i_truncate_mutex. Because * the MDS revokes Fwb caps before sending truncate @@ -796,6 +982,8 @@ retry_snap: written = generic_file_buffered_write(iocb, iov, nr_segs, pos, &iocb->ki_pos, count, 0); + if (inode->i_size > old_size) + ceph_fscache_update_objectsize(inode); mutex_unlock(&inode->i_mutex); } @@ -1018,7 +1206,7 @@ static long ceph_fallocate(struct file *file, int mode, loff_t offset, loff_t length) { struct ceph_file_info *fi = file->private_data; - struct inode *inode = file->f_dentry->d_inode; + struct inode *inode = file_inode(file); struct ceph_inode_info *ci = ceph_inode(inode); struct ceph_osd_client *osdc = &ceph_inode_to_client(inode)->client->osdc; diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 278fd2891288..0b0728e5be2d 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -9,6 +9,7 @@ #include <linux/namei.h> #include <linux/writeback.h> #include <linux/vmalloc.h> +#include <linux/posix_acl.h> #include "super.h" #include "mds_client.h" @@ -95,6 +96,8 @@ const struct inode_operations ceph_file_iops = { .getxattr = ceph_getxattr, .listxattr = ceph_listxattr, .removexattr = ceph_removexattr, + .get_acl = ceph_get_acl, + .set_acl = ceph_set_acl, }; @@ -335,12 +338,10 @@ struct inode *ceph_alloc_inode(struct super_block *sb) ci->i_hold_caps_min = 0; ci->i_hold_caps_max = 0; INIT_LIST_HEAD(&ci->i_cap_delay_list); - ci->i_cap_exporting_mds = 0; - ci->i_cap_exporting_mseq = 0; - ci->i_cap_exporting_issued = 0; INIT_LIST_HEAD(&ci->i_cap_snaps); ci->i_head_snapc = NULL; ci->i_snap_caps = 0; + ci->i_cap_exporting_issued = 0; for (i = 0; i < CEPH_FILE_MODE_NUM; i++) ci->i_nr_by_mode[i] = 0; @@ -436,6 +437,16 @@ void ceph_destroy_inode(struct inode *inode) call_rcu(&inode->i_rcu, ceph_i_callback); } +int ceph_drop_inode(struct inode *inode) +{ + /* + * Positve dentry and corresponding inode are always accompanied + * in MDS reply. So no need to keep inode in the cache after + * dropping all its aliases. + */ + return 1; +} + /* * Helpers to fill in size, ctime, mtime, and atime. We have to be * careful because either the client or MDS may have more up to date @@ -648,14 +659,6 @@ static int fill_inode(struct inode *inode, le32_to_cpu(info->time_warp_seq), &ctime, &mtime, &atime); - /* only update max_size on auth cap */ - if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && - ci->i_max_size != le64_to_cpu(info->max_size)) { - dout("max_size %lld -> %llu\n", ci->i_max_size, - le64_to_cpu(info->max_size)); - ci->i_max_size = le64_to_cpu(info->max_size); - } - ci->i_layout = info->layout; inode->i_blkbits = fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1; @@ -670,6 +673,7 @@ static int fill_inode(struct inode *inode, memcpy(ci->i_xattrs.blob->vec.iov_base, iinfo->xattr_data, iinfo->xattr_len); ci->i_xattrs.version = le64_to_cpu(info->xattr_version); + ceph_forget_all_cached_acls(inode); xattr_blob = NULL; } @@ -743,6 +747,14 @@ static int fill_inode(struct inode *inode, ci->i_max_offset = 2; } no_change: + /* only update max_size on auth cap */ + if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && + ci->i_max_size != le64_to_cpu(info->max_size)) { + dout("max_size %lld -> %llu\n", ci->i_max_size, + le64_to_cpu(info->max_size)); + ci->i_max_size = le64_to_cpu(info->max_size); + } + spin_unlock(&ci->i_ceph_lock); /* queue truncate if we saw i_size decrease */ @@ -1032,10 +1044,59 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req, session, req->r_request_started, -1, &req->r_caps_reservation); if (err < 0) - return err; + goto done; } else { WARN_ON_ONCE(1); } + + if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME) { + struct qstr dname; + struct dentry *dn, *parent; + + BUG_ON(!rinfo->head->is_target); + BUG_ON(req->r_dentry); + + parent = d_find_any_alias(dir); + BUG_ON(!parent); + + dname.name = rinfo->dname; + dname.len = rinfo->dname_len; + dname.hash = full_name_hash(dname.name, dname.len); + vino.ino = le64_to_cpu(rinfo->targeti.in->ino); + vino.snap = le64_to_cpu(rinfo->targeti.in->snapid); +retry_lookup: + dn = d_lookup(parent, &dname); + dout("d_lookup on parent=%p name=%.*s got %p\n", + parent, dname.len, dname.name, dn); + + if (!dn) { + dn = d_alloc(parent, &dname); + dout("d_alloc %p '%.*s' = %p\n", parent, + dname.len, dname.name, dn); + if (dn == NULL) { + dput(parent); + err = -ENOMEM; + goto done; + } + err = ceph_init_dentry(dn); + if (err < 0) { + dput(dn); + dput(parent); + goto done; + } + } else if (dn->d_inode && + (ceph_ino(dn->d_inode) != vino.ino || + ceph_snap(dn->d_inode) != vino.snap)) { + dout(" dn %p points to wrong inode %p\n", + dn, dn->d_inode); + d_delete(dn); + dput(dn); + goto retry_lookup; + } + + req->r_dentry = dn; + dput(parent); + } } if (rinfo->head->is_target) { @@ -1051,7 +1112,7 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req, err = fill_inode(in, &rinfo->targeti, NULL, session, req->r_request_started, - (le32_to_cpu(rinfo->head->result) == 0) ? + (!req->r_aborted && rinfo->head->result == 0) ? req->r_fmode : -1, &req->r_caps_reservation); if (err < 0) { @@ -1454,7 +1515,8 @@ static void ceph_invalidate_work(struct work_struct *work) dout("invalidate_pages %p gen %d revoking %d\n", inode, ci->i_rdcache_gen, ci->i_rdcache_revoking); if (ci->i_rdcache_revoking != ci->i_rdcache_gen) { - /* nevermind! */ + if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) + check = 1; spin_unlock(&ci->i_ceph_lock); mutex_unlock(&ci->i_truncate_mutex); goto out; @@ -1475,13 +1537,14 @@ static void ceph_invalidate_work(struct work_struct *work) dout("invalidate_pages %p gen %d raced, now %d revoking %d\n", inode, orig_gen, ci->i_rdcache_gen, ci->i_rdcache_revoking); + if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) + check = 1; } spin_unlock(&ci->i_ceph_lock); mutex_unlock(&ci->i_truncate_mutex); - +out: if (check) ceph_check_caps(ci, 0, NULL); -out: iput(inode); } @@ -1611,7 +1674,6 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr) { struct inode *inode = dentry->d_inode; struct ceph_inode_info *ci = ceph_inode(inode); - struct inode *parent_inode; const unsigned int ia_valid = attr->ia_valid; struct ceph_mds_request *req; struct ceph_mds_client *mdsc = ceph_sb_to_client(dentry->d_sb)->mdsc; @@ -1675,6 +1737,7 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr) dirtied |= CEPH_CAP_AUTH_EXCL; } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || attr->ia_mode != inode->i_mode) { + inode->i_mode = attr->ia_mode; req->r_args.setattr.mode = cpu_to_le32(attr->ia_mode); mask |= CEPH_SETATTR_MODE; release |= CEPH_CAP_AUTH_SHARED; @@ -1790,15 +1853,19 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr) if (inode_dirty_flags) __mark_inode_dirty(inode, inode_dirty_flags); + if (ia_valid & ATTR_MODE) { + err = posix_acl_chmod(inode, attr->ia_mode); + if (err) + goto out_put; + } + if (mask) { req->r_inode = inode; ihold(inode); req->r_inode_drop = release; req->r_args.setattr.mask = cpu_to_le32(mask); req->r_num_caps = 1; - parent_inode = ceph_get_dentry_parent_inode(dentry); - err = ceph_mdsc_do_request(mdsc, parent_inode, req); - iput(parent_inode); + err = ceph_mdsc_do_request(mdsc, NULL, req); } dout("setattr %p result=%d (%s locally, %d remote)\n", inode, err, ceph_cap_string(dirtied), mask); @@ -1809,6 +1876,7 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr) return err; out: spin_unlock(&ci->i_ceph_lock); +out_put: ceph_mdsc_put_request(req); return err; } diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c index 669622fd1ae3..efbe08289292 100644 --- a/fs/ceph/ioctl.c +++ b/fs/ceph/ioctl.c @@ -64,7 +64,6 @@ static long __validate_layout(struct ceph_mds_client *mdsc, static long ceph_ioctl_set_layout(struct file *file, void __user *arg) { struct inode *inode = file_inode(file); - struct inode *parent_inode; struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; struct ceph_mds_request *req; struct ceph_ioctl_layout l; @@ -121,9 +120,7 @@ static long ceph_ioctl_set_layout(struct file *file, void __user *arg) cpu_to_le32(l.object_size); req->r_args.setlayout.layout.fl_pg_pool = cpu_to_le32(l.data_pool); - parent_inode = ceph_get_dentry_parent_inode(file->f_dentry); - err = ceph_mdsc_do_request(mdsc, parent_inode, req); - iput(parent_inode); + err = ceph_mdsc_do_request(mdsc, NULL, req); ceph_mdsc_put_request(req); return err; } @@ -183,6 +180,8 @@ static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg) struct ceph_inode_info *ci = ceph_inode(inode); struct ceph_osd_client *osdc = &ceph_sb_to_client(inode->i_sb)->client->osdc; + struct ceph_object_locator oloc; + struct ceph_object_id oid; u64 len = 1, olen; u64 tmp; struct ceph_pg pgid; @@ -211,8 +210,10 @@ static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg) snprintf(dl.object_name, sizeof(dl.object_name), "%llx.%08llx", ceph_ino(inode), dl.object_no); - r = ceph_calc_ceph_pg(&pgid, dl.object_name, osdc->osdmap, - ceph_file_layout_pg_pool(ci->i_layout)); + oloc.pool = ceph_file_layout_pg_pool(ci->i_layout); + ceph_oid_set_name(&oid, dl.object_name); + + r = ceph_oloc_oid_to_pg(osdc->osdmap, &oloc, &oid, &pgid); if (r < 0) { up_read(&osdc->map_sem); return r; diff --git a/fs/ceph/locks.c b/fs/ceph/locks.c index ae6d14e82b0f..d94ba0df9f4d 100644 --- a/fs/ceph/locks.c +++ b/fs/ceph/locks.c @@ -2,11 +2,31 @@ #include <linux/file.h> #include <linux/namei.h> +#include <linux/random.h> #include "super.h" #include "mds_client.h" #include <linux/ceph/pagelist.h> +static u64 lock_secret; + +static inline u64 secure_addr(void *addr) +{ + u64 v = lock_secret ^ (u64)(unsigned long)addr; + /* + * Set the most significant bit, so that MDS knows the 'owner' + * is sufficient to identify the owner of lock. (old code uses + * both 'owner' and 'pid') + */ + v |= (1ULL << 63); + return v; +} + +void __init ceph_flock_init(void) +{ + get_random_bytes(&lock_secret, sizeof(lock_secret)); +} + /** * Implement fcntl and flock locking functions. */ @@ -14,11 +34,11 @@ static int ceph_lock_message(u8 lock_type, u16 operation, struct file *file, int cmd, u8 wait, struct file_lock *fl) { struct inode *inode = file_inode(file); - struct ceph_mds_client *mdsc = - ceph_sb_to_client(inode->i_sb)->mdsc; + struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; struct ceph_mds_request *req; int err; u64 length = 0; + u64 owner; req = ceph_mdsc_create_request(mdsc, operation, USE_AUTH_MDS); if (IS_ERR(req)) @@ -32,25 +52,27 @@ static int ceph_lock_message(u8 lock_type, u16 operation, struct file *file, else length = fl->fl_end - fl->fl_start + 1; - dout("ceph_lock_message: rule: %d, op: %d, pid: %llu, start: %llu, " - "length: %llu, wait: %d, type: %d", (int)lock_type, - (int)operation, (u64)fl->fl_pid, fl->fl_start, - length, wait, fl->fl_type); + if (lock_type == CEPH_LOCK_FCNTL) + owner = secure_addr(fl->fl_owner); + else + owner = secure_addr(fl->fl_file); + + dout("ceph_lock_message: rule: %d, op: %d, owner: %llx, pid: %llu, " + "start: %llu, length: %llu, wait: %d, type: %d", (int)lock_type, + (int)operation, owner, (u64)fl->fl_pid, fl->fl_start, length, + wait, fl->fl_type); req->r_args.filelock_change.rule = lock_type; req->r_args.filelock_change.type = cmd; + req->r_args.filelock_change.owner = cpu_to_le64(owner); req->r_args.filelock_change.pid = cpu_to_le64((u64)fl->fl_pid); - /* This should be adjusted, but I'm not sure if - namespaces actually get id numbers*/ - req->r_args.filelock_change.pid_namespace = - cpu_to_le64((u64)(unsigned long)fl->fl_nspid); req->r_args.filelock_change.start = cpu_to_le64(fl->fl_start); req->r_args.filelock_change.length = cpu_to_le64(length); req->r_args.filelock_change.wait = wait; err = ceph_mdsc_do_request(mdsc, inode, req); - if ( operation == CEPH_MDS_OP_GETFILELOCK){ + if (operation == CEPH_MDS_OP_GETFILELOCK) { fl->fl_pid = le64_to_cpu(req->r_reply_info.filelock_reply->pid); if (CEPH_LOCK_SHARED == req->r_reply_info.filelock_reply->type) fl->fl_type = F_RDLCK; @@ -87,14 +109,19 @@ int ceph_lock(struct file *file, int cmd, struct file_lock *fl) u8 wait = 0; u16 op = CEPH_MDS_OP_SETFILELOCK; - fl->fl_nspid = get_pid(task_tgid(current)); - dout("ceph_lock, fl_pid:%d", fl->fl_pid); + if (!(fl->fl_flags & FL_POSIX)) + return -ENOLCK; + /* No mandatory locks */ + if (__mandatory_lock(file->f_mapping->host) && fl->fl_type != F_UNLCK) + return -ENOLCK; + + dout("ceph_lock, fl_owner: %p", fl->fl_owner); /* set wait bit as appropriate, then make command as Ceph expects it*/ - if (F_SETLKW == cmd) - wait = 1; - if (F_GETLK == cmd) + if (IS_GETLK(cmd)) op = CEPH_MDS_OP_GETFILELOCK; + else if (IS_SETLKW(cmd)) + wait = 1; if (F_RDLCK == fl->fl_type) lock_cmd = CEPH_LOCK_SHARED; @@ -105,7 +132,7 @@ int ceph_lock(struct file *file, int cmd, struct file_lock *fl) err = ceph_lock_message(CEPH_LOCK_FCNTL, op, file, lock_cmd, wait, fl); if (!err) { - if ( op != CEPH_MDS_OP_GETFILELOCK ){ + if (op != CEPH_MDS_OP_GETFILELOCK) { dout("mds locked, locking locally"); err = posix_lock_file(file, fl, NULL); if (err && (CEPH_MDS_OP_SETFILELOCK == op)) { @@ -131,20 +158,22 @@ int ceph_flock(struct file *file, int cmd, struct file_lock *fl) { u8 lock_cmd; int err; - u8 wait = 1; - - fl->fl_nspid = get_pid(task_tgid(current)); - dout("ceph_flock, fl_pid:%d", fl->fl_pid); - - /* set wait bit, then clear it out of cmd*/ - if (cmd & LOCK_NB) - wait = 0; - cmd = cmd & (LOCK_SH | LOCK_EX | LOCK_UN); - /* set command sequence that Ceph wants to see: - shared lock, exclusive lock, or unlock */ - if (LOCK_SH == cmd) + u8 wait = 0; + + if (!(fl->fl_flags & FL_FLOCK)) + return -ENOLCK; + /* No mandatory locks */ + if (__mandatory_lock(file->f_mapping->host) && fl->fl_type != F_UNLCK) + return -ENOLCK; + + dout("ceph_flock, fl_file: %p", fl->fl_file); + + if (IS_SETLKW(cmd)) + wait = 1; + + if (F_RDLCK == fl->fl_type) lock_cmd = CEPH_LOCK_SHARED; - else if (LOCK_EX == cmd) + else if (F_WRLCK == fl->fl_type) lock_cmd = CEPH_LOCK_EXCL; else lock_cmd = CEPH_LOCK_UNLOCK; @@ -280,13 +309,14 @@ int lock_to_ceph_filelock(struct file_lock *lock, struct ceph_filelock *cephlock) { int err = 0; - cephlock->start = cpu_to_le64(lock->fl_start); cephlock->length = cpu_to_le64(lock->fl_end - lock->fl_start + 1); cephlock->client = cpu_to_le64(0); - cephlock->pid = cpu_to_le64(lock->fl_pid); - cephlock->pid_namespace = - cpu_to_le64((u64)(unsigned long)lock->fl_nspid); + cephlock->pid = cpu_to_le64((u64)lock->fl_pid); + if (lock->fl_flags & FL_POSIX) + cephlock->owner = cpu_to_le64(secure_addr(lock->fl_owner)); + else + cephlock->owner = cpu_to_le64(secure_addr(lock->fl_file)); switch (lock->fl_type) { case F_RDLCK: diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index d90861f45210..2b4d093d0563 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -3,6 +3,7 @@ #include <linux/fs.h> #include <linux/wait.h> #include <linux/slab.h> +#include <linux/gfp.h> #include <linux/sched.h> #include <linux/debugfs.h> #include <linux/seq_file.h> @@ -63,7 +64,7 @@ static const struct ceph_connection_operations mds_con_ops; */ static int parse_reply_info_in(void **p, void *end, struct ceph_mds_reply_info_in *info, - int features) + u64 features) { int err = -EIO; @@ -98,7 +99,7 @@ bad: */ static int parse_reply_info_trace(void **p, void *end, struct ceph_mds_reply_info_parsed *info, - int features) + u64 features) { int err; @@ -145,7 +146,7 @@ out_bad: */ static int parse_reply_info_dir(void **p, void *end, struct ceph_mds_reply_info_parsed *info, - int features) + u64 features) { u32 num, i = 0; int err; @@ -165,21 +166,18 @@ static int parse_reply_info_dir(void **p, void *end, if (num == 0) goto done; - /* alloc large array */ - info->dir_nr = num; - info->dir_in = kcalloc(num, sizeof(*info->dir_in) + - sizeof(*info->dir_dname) + - sizeof(*info->dir_dname_len) + - sizeof(*info->dir_dlease), - GFP_NOFS); - if (info->dir_in == NULL) { - err = -ENOMEM; - goto out_bad; - } + BUG_ON(!info->dir_in); info->dir_dname = (void *)(info->dir_in + num); info->dir_dname_len = (void *)(info->dir_dname + num); info->dir_dlease = (void *)(info->dir_dname_len + num); + if ((unsigned long)(info->dir_dlease + num) > + (unsigned long)info->dir_in + info->dir_buf_size) { + pr_err("dir contents are larger than expected\n"); + WARN_ON(1); + goto bad; + } + info->dir_nr = num; while (num) { /* dentry */ ceph_decode_need(p, end, sizeof(u32)*2, bad); @@ -217,7 +215,7 @@ out_bad: */ static int parse_reply_info_filelock(void **p, void *end, struct ceph_mds_reply_info_parsed *info, - int features) + u64 features) { if (*p + sizeof(*info->filelock_reply) > end) goto bad; @@ -238,7 +236,7 @@ bad: */ static int parse_reply_info_create(void **p, void *end, struct ceph_mds_reply_info_parsed *info, - int features) + u64 features) { if (features & CEPH_FEATURE_REPLY_CREATE_INODE) { if (*p == end) { @@ -262,7 +260,7 @@ bad: */ static int parse_reply_info_extra(void **p, void *end, struct ceph_mds_reply_info_parsed *info, - int features) + u64 features) { if (info->head->op == CEPH_MDS_OP_GETFILELOCK) return parse_reply_info_filelock(p, end, info, features); @@ -280,7 +278,7 @@ static int parse_reply_info_extra(void **p, void *end, */ static int parse_reply_info(struct ceph_msg *msg, struct ceph_mds_reply_info_parsed *info, - int features) + u64 features) { void *p, *end; u32 len; @@ -327,7 +325,9 @@ out_bad: static void destroy_reply_info(struct ceph_mds_reply_info_parsed *info) { - kfree(info->dir_in); + if (!info->dir_in) + return; + free_pages((unsigned long)info->dir_in, get_order(info->dir_buf_size)); } @@ -512,12 +512,11 @@ void ceph_mdsc_release_request(struct kref *kref) struct ceph_mds_request *req = container_of(kref, struct ceph_mds_request, r_kref); + destroy_reply_info(&req->r_reply_info); if (req->r_request) ceph_msg_put(req->r_request); - if (req->r_reply) { + if (req->r_reply) ceph_msg_put(req->r_reply); - destroy_reply_info(&req->r_reply_info); - } if (req->r_inode) { ceph_put_cap_refs(ceph_inode(req->r_inode), CEPH_CAP_PIN); iput(req->r_inode); @@ -528,7 +527,9 @@ void ceph_mdsc_release_request(struct kref *kref) iput(req->r_target_inode); if (req->r_dentry) dput(req->r_dentry); - if (req->r_old_dentry) { + if (req->r_old_dentry) + dput(req->r_old_dentry); + if (req->r_old_dentry_dir) { /* * track (and drop pins for) r_old_dentry_dir * separately, since r_old_dentry's d_parent may have @@ -537,7 +538,6 @@ void ceph_mdsc_release_request(struct kref *kref) */ ceph_put_cap_refs(ceph_inode(req->r_old_dentry_dir), CEPH_CAP_PIN); - dput(req->r_old_dentry); iput(req->r_old_dentry_dir); } kfree(req->r_path1); @@ -713,14 +713,15 @@ static int __choose_mds(struct ceph_mds_client *mdsc, struct dentry *dn = get_nonsnap_parent(parent); inode = dn->d_inode; dout("__choose_mds using nonsnap parent %p\n", inode); - } else if (req->r_dentry->d_inode) { + } else { /* dentry target */ inode = req->r_dentry->d_inode; - } else { - /* dir + name */ - inode = dir; - hash = ceph_dentry_hash(dir, req->r_dentry); - is_hash = true; + if (!inode || mode == USE_AUTH_MDS) { + /* dir + name */ + inode = dir; + hash = ceph_dentry_hash(dir, req->r_dentry); + is_hash = true; + } } } @@ -846,35 +847,56 @@ static int __open_session(struct ceph_mds_client *mdsc, * * called under mdsc->mutex */ +static struct ceph_mds_session * +__open_export_target_session(struct ceph_mds_client *mdsc, int target) +{ + struct ceph_mds_session *session; + + session = __ceph_lookup_mds_session(mdsc, target); + if (!session) { + session = register_session(mdsc, target); + if (IS_ERR(session)) + return session; + } + if (session->s_state == CEPH_MDS_SESSION_NEW || + session->s_state == CEPH_MDS_SESSION_CLOSING) + __open_session(mdsc, session); + + return session; +} + +struct ceph_mds_session * +ceph_mdsc_open_export_target_session(struct ceph_mds_client *mdsc, int target) +{ + struct ceph_mds_session *session; + + dout("open_export_target_session to mds%d\n", target); + + mutex_lock(&mdsc->mutex); + session = __open_export_target_session(mdsc, target); + mutex_unlock(&mdsc->mutex); + + return session; +} + static void __open_export_target_sessions(struct ceph_mds_client *mdsc, struct ceph_mds_session *session) { struct ceph_mds_info *mi; struct ceph_mds_session *ts; int i, mds = session->s_mds; - int target; if (mds >= mdsc->mdsmap->m_max_mds) return; + mi = &mdsc->mdsmap->m_info[mds]; dout("open_export_target_sessions for mds%d (%d targets)\n", session->s_mds, mi->num_export_targets); for (i = 0; i < mi->num_export_targets; i++) { - target = mi->export_targets[i]; - ts = __ceph_lookup_mds_session(mdsc, target); - if (!ts) { - ts = register_session(mdsc, target); - if (IS_ERR(ts)) - return; - } - if (session->s_state == CEPH_MDS_SESSION_NEW || - session->s_state == CEPH_MDS_SESSION_CLOSING) - __open_session(mdsc, session); - else - dout(" mds%d target mds%d %p is %s\n", session->s_mds, - i, ts, session_state_name(ts->s_state)); - ceph_put_mds_session(ts); + ts = __open_export_target_session(mdsc, mi->export_targets[i]); + if (!IS_ERR(ts)) + ceph_put_mds_session(ts); } } @@ -1136,6 +1158,21 @@ static int send_renew_caps(struct ceph_mds_client *mdsc, return 0; } +static int send_flushmsg_ack(struct ceph_mds_client *mdsc, + struct ceph_mds_session *session, u64 seq) +{ + struct ceph_msg *msg; + + dout("send_flushmsg_ack to mds%d (%s)s seq %lld\n", + session->s_mds, session_state_name(session->s_state), seq); + msg = create_session_msg(CEPH_SESSION_FLUSHMSG_ACK, seq); + if (!msg) + return -ENOMEM; + ceph_con_send(&session->s_con, msg); + return 0; +} + + /* * Note new cap ttl, and any transition from stale -> not stale (fresh?). * @@ -1214,7 +1251,7 @@ static int trim_caps_cb(struct inode *inode, struct ceph_cap *cap, void *arg) { struct ceph_mds_session *session = arg; struct ceph_inode_info *ci = ceph_inode(inode); - int used, oissued, mine; + int used, wanted, oissued, mine; if (session->s_trim_caps <= 0) return -1; @@ -1222,14 +1259,19 @@ static int trim_caps_cb(struct inode *inode, struct ceph_cap *cap, void *arg) spin_lock(&ci->i_ceph_lock); mine = cap->issued | cap->implemented; used = __ceph_caps_used(ci); + wanted = __ceph_caps_file_wanted(ci); oissued = __ceph_caps_issued_other(ci, cap); - dout("trim_caps_cb %p cap %p mine %s oissued %s used %s\n", + dout("trim_caps_cb %p cap %p mine %s oissued %s used %s wanted %s\n", inode, cap, ceph_cap_string(mine), ceph_cap_string(oissued), - ceph_cap_string(used)); - if (ci->i_dirty_caps) - goto out; /* dirty caps */ - if ((used & ~oissued) & mine) + ceph_cap_string(used), ceph_cap_string(wanted)); + if (cap == ci->i_auth_cap) { + if (ci->i_dirty_caps | ci->i_flushing_caps) + goto out; + if ((used | wanted) & CEPH_CAP_ANY_WR) + goto out; + } + if ((used | wanted) & ~oissued & mine) goto out; /* we need these caps */ session->s_trim_caps--; @@ -1269,6 +1311,9 @@ static int trim_caps(struct ceph_mds_client *mdsc, trim_caps - session->s_trim_caps); session->s_trim_caps = 0; } + + ceph_add_cap_releases(mdsc, session); + ceph_send_cap_releases(mdsc, session); return 0; } @@ -1419,15 +1464,18 @@ static void discard_cap_releases(struct ceph_mds_client *mdsc, dout("discard_cap_releases mds%d\n", session->s_mds); - /* zero out the in-progress message */ - msg = list_first_entry(&session->s_cap_releases, - struct ceph_msg, list_head); - head = msg->front.iov_base; - num = le32_to_cpu(head->num); - dout("discard_cap_releases mds%d %p %u\n", session->s_mds, msg, num); - head->num = cpu_to_le32(0); - msg->front.iov_len = sizeof(*head); - session->s_num_cap_releases += num; + if (!list_empty(&session->s_cap_releases)) { + /* zero out the in-progress message */ + msg = list_first_entry(&session->s_cap_releases, + struct ceph_msg, list_head); + head = msg->front.iov_base; + num = le32_to_cpu(head->num); + dout("discard_cap_releases mds%d %p %u\n", + session->s_mds, msg, num); + head->num = cpu_to_le32(0); + msg->front.iov_len = sizeof(*head); + session->s_num_cap_releases += num; + } /* requeue completed messages */ while (!list_empty(&session->s_cap_releases_done)) { @@ -1450,6 +1498,43 @@ static void discard_cap_releases(struct ceph_mds_client *mdsc, * requests */ +int ceph_alloc_readdir_reply_buffer(struct ceph_mds_request *req, + struct inode *dir) +{ + struct ceph_inode_info *ci = ceph_inode(dir); + struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; + struct ceph_mount_options *opt = req->r_mdsc->fsc->mount_options; + size_t size = sizeof(*rinfo->dir_in) + sizeof(*rinfo->dir_dname_len) + + sizeof(*rinfo->dir_dname) + sizeof(*rinfo->dir_dlease); + int order, num_entries; + + spin_lock(&ci->i_ceph_lock); + num_entries = ci->i_files + ci->i_subdirs; + spin_unlock(&ci->i_ceph_lock); + num_entries = max(num_entries, 1); + num_entries = min(num_entries, opt->max_readdir); + + order = get_order(size * num_entries); + while (order >= 0) { + rinfo->dir_in = (void*)__get_free_pages(GFP_NOFS | __GFP_NOWARN, + order); + if (rinfo->dir_in) + break; + order--; + } + if (!rinfo->dir_in) + return -ENOMEM; + + num_entries = (PAGE_SIZE << order) / size; + num_entries = min(num_entries, opt->max_readdir); + + rinfo->dir_buf_size = PAGE_SIZE << order; + req->r_num_caps = num_entries + 1; + req->r_args.readdir.max_entries = cpu_to_le32(num_entries); + req->r_args.readdir.max_bytes = cpu_to_le32(opt->max_readdir_bytes); + return 0; +} + /* * Create an mds request. */ @@ -2011,7 +2096,7 @@ int ceph_mdsc_do_request(struct ceph_mds_client *mdsc, ceph_get_cap_refs(ceph_inode(req->r_inode), CEPH_CAP_PIN); if (req->r_locked_dir) ceph_get_cap_refs(ceph_inode(req->r_locked_dir), CEPH_CAP_PIN); - if (req->r_old_dentry) + if (req->r_old_dentry_dir) ceph_get_cap_refs(ceph_inode(req->r_old_dentry_dir), CEPH_CAP_PIN); @@ -2156,26 +2241,16 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg) */ if (result == -ESTALE) { dout("got ESTALE on request %llu", req->r_tid); - if (!req->r_inode) { - /* do nothing; not an authority problem */ - } else if (req->r_direct_mode != USE_AUTH_MDS) { + if (req->r_direct_mode != USE_AUTH_MDS) { dout("not using auth, setting for that now"); req->r_direct_mode = USE_AUTH_MDS; __do_request(mdsc, req); mutex_unlock(&mdsc->mutex); goto out; } else { - struct ceph_inode_info *ci = ceph_inode(req->r_inode); - struct ceph_cap *cap = NULL; - - if (req->r_session) - cap = ceph_get_cap_for_mds(ci, - req->r_session->s_mds); - - dout("already using auth"); - if ((!cap || cap != ci->i_auth_cap) || - (cap->mseq != req->r_sent_on_mseq)) { - dout("but cap changed, so resending"); + int mds = __choose_mds(mdsc, req); + if (mds >= 0 && mds != req->r_session->s_mds) { + dout("but auth changed, so resending"); __do_request(mdsc, req); mutex_unlock(&mdsc->mutex); goto out; @@ -2400,6 +2475,10 @@ static void handle_session(struct ceph_mds_session *session, trim_caps(mdsc, session, le32_to_cpu(h->max_caps)); break; + case CEPH_SESSION_FLUSHMSG: + send_flushmsg_ack(mdsc, session, seq); + break; + default: pr_err("mdsc_handle_session bad op %d mds%d\n", op, mds); WARN_ON(1); diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h index 4c053d099ae4..e90cfccf93bd 100644 --- a/fs/ceph/mds_client.h +++ b/fs/ceph/mds_client.h @@ -67,6 +67,7 @@ struct ceph_mds_reply_info_parsed { /* for readdir results */ struct { struct ceph_mds_reply_dirfrag *dir_dir; + size_t dir_buf_size; int dir_nr; char **dir_dname; u32 *dir_dname_len; @@ -346,7 +347,8 @@ extern void ceph_mdsc_lease_release(struct ceph_mds_client *mdsc, struct dentry *dn); extern void ceph_invalidate_dir_request(struct ceph_mds_request *req); - +extern int ceph_alloc_readdir_reply_buffer(struct ceph_mds_request *req, + struct inode *dir); extern struct ceph_mds_request * ceph_mdsc_create_request(struct ceph_mds_client *mdsc, int op, int mode); extern void ceph_mdsc_submit_request(struct ceph_mds_client *mdsc, @@ -383,6 +385,8 @@ extern void ceph_mdsc_lease_send_msg(struct ceph_mds_session *session, extern void ceph_mdsc_handle_map(struct ceph_mds_client *mdsc, struct ceph_msg *msg); +extern struct ceph_mds_session * +ceph_mdsc_open_export_target_session(struct ceph_mds_client *mdsc, int target); extern void ceph_mdsc_open_export_target_sessions(struct ceph_mds_client *mdsc, struct ceph_mds_session *session); diff --git a/fs/ceph/strings.c b/fs/ceph/strings.c index 89fa4a940a0f..51cc23e48111 100644 --- a/fs/ceph/strings.c +++ b/fs/ceph/strings.c @@ -41,6 +41,8 @@ const char *ceph_session_op_name(int op) case CEPH_SESSION_RENEWCAPS: return "renewcaps"; case CEPH_SESSION_STALE: return "stale"; case CEPH_SESSION_RECALL_STATE: return "recall_state"; + case CEPH_SESSION_FLUSHMSG: return "flushmsg"; + case CEPH_SESSION_FLUSHMSG_ACK: return "flushmsg_ack"; } return "???"; } @@ -52,6 +54,7 @@ const char *ceph_mds_op_name(int op) case CEPH_MDS_OP_LOOKUPHASH: return "lookuphash"; case CEPH_MDS_OP_LOOKUPPARENT: return "lookupparent"; case CEPH_MDS_OP_LOOKUPINO: return "lookupino"; + case CEPH_MDS_OP_LOOKUPNAME: return "lookupname"; case CEPH_MDS_OP_GETATTR: return "getattr"; case CEPH_MDS_OP_SETXATTR: return "setxattr"; case CEPH_MDS_OP_SETATTR: return "setattr"; diff --git a/fs/ceph/super.c b/fs/ceph/super.c index 6a0951e43044..06150fd745ac 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -144,7 +144,11 @@ enum { Opt_ino32, Opt_noino32, Opt_fscache, - Opt_nofscache + Opt_nofscache, +#ifdef CONFIG_CEPH_FS_POSIX_ACL + Opt_acl, +#endif + Opt_noacl }; static match_table_t fsopt_tokens = { @@ -172,6 +176,10 @@ static match_table_t fsopt_tokens = { {Opt_noino32, "noino32"}, {Opt_fscache, "fsc"}, {Opt_nofscache, "nofsc"}, +#ifdef CONFIG_CEPH_FS_POSIX_ACL + {Opt_acl, "acl"}, +#endif + {Opt_noacl, "noacl"}, {-1, NULL} }; @@ -271,6 +279,14 @@ static int parse_fsopt_token(char *c, void *private) case Opt_nofscache: fsopt->flags &= ~CEPH_MOUNT_OPT_FSCACHE; break; +#ifdef CONFIG_CEPH_FS_POSIX_ACL + case Opt_acl: + fsopt->sb_flags |= MS_POSIXACL; + break; +#endif + case Opt_noacl: + fsopt->sb_flags &= ~MS_POSIXACL; + break; default: BUG_ON(token); } @@ -438,6 +454,13 @@ static int ceph_show_options(struct seq_file *m, struct dentry *root) else seq_puts(m, ",nofsc"); +#ifdef CONFIG_CEPH_FS_POSIX_ACL + if (fsopt->sb_flags & MS_POSIXACL) + seq_puts(m, ",acl"); + else + seq_puts(m, ",noacl"); +#endif + if (fsopt->wsize) seq_printf(m, ",wsize=%d", fsopt->wsize); if (fsopt->rsize != CEPH_RSIZE_DEFAULT) @@ -490,10 +513,10 @@ static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt, struct ceph_options *opt) { struct ceph_fs_client *fsc; - const unsigned supported_features = + const u64 supported_features = CEPH_FEATURE_FLOCK | CEPH_FEATURE_DIRLAYOUTHASH; - const unsigned required_features = 0; + const u64 required_features = 0; int page_count; size_t size; int err = -ENOMEM; @@ -686,6 +709,7 @@ static const struct super_operations ceph_super_ops = { .alloc_inode = ceph_alloc_inode, .destroy_inode = ceph_destroy_inode, .write_inode = ceph_write_inode, + .drop_inode = ceph_drop_inode, .sync_fs = ceph_sync_fs, .put_super = ceph_put_super, .show_options = ceph_show_options, @@ -819,6 +843,7 @@ static int ceph_set_super(struct super_block *s, void *data) s->s_flags = fsc->mount_options->sb_flags; s->s_maxbytes = 1ULL << 40; /* temp value until we get mdsmap */ + s->s_xattr = ceph_xattr_handlers; s->s_fs_info = fsc; fsc->sb = s; @@ -906,6 +931,10 @@ static struct dentry *ceph_mount(struct file_system_type *fs_type, struct ceph_options *opt = NULL; dout("ceph_mount\n"); + +#ifdef CONFIG_CEPH_FS_POSIX_ACL + flags |= MS_POSIXACL; +#endif err = parse_mount_options(&fsopt, &opt, flags, data, dev_name, &path); if (err < 0) { res = ERR_PTR(err); @@ -997,6 +1026,7 @@ static int __init init_ceph(void) if (ret) goto out; + ceph_flock_init(); ceph_xattr_init(); ret = register_filesystem(&ceph_fs_type); if (ret) diff --git a/fs/ceph/super.h b/fs/ceph/super.h index ef4ac38bb614..7866cd05a6bb 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -13,6 +13,7 @@ #include <linux/wait.h> #include <linux/writeback.h> #include <linux/slab.h> +#include <linux/posix_acl.h> #include <linux/ceph/libceph.h> @@ -287,14 +288,12 @@ struct ceph_inode_info { unsigned long i_hold_caps_min; /* jiffies */ unsigned long i_hold_caps_max; /* jiffies */ struct list_head i_cap_delay_list; /* for delayed cap release to mds */ - int i_cap_exporting_mds; /* to handle cap migration between */ - unsigned i_cap_exporting_mseq; /* mds's. */ - unsigned i_cap_exporting_issued; struct ceph_cap_reservation i_cap_migration_resv; struct list_head i_cap_snaps; /* snapped state pending flush to mds */ struct ceph_snap_context *i_head_snapc; /* set if wr_buffer_head > 0 or dirty|flushing caps */ unsigned i_snap_caps; /* cap bits for snapped files */ + unsigned i_cap_exporting_issued; int i_nr_by_mode[CEPH_FILE_MODE_NUM]; /* open file counts */ @@ -335,7 +334,6 @@ struct ceph_inode_info { u32 i_fscache_gen; /* sequence, for delayed fscache validate */ struct work_struct i_revalidate_work; #endif - struct inode vfs_inode; /* at end */ }; @@ -529,6 +527,8 @@ static inline int __ceph_caps_dirty(struct ceph_inode_info *ci) } extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask); +extern int __ceph_caps_revoking_other(struct ceph_inode_info *ci, + struct ceph_cap *ocap, int mask); extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask); extern int __ceph_caps_used(struct ceph_inode_info *ci); @@ -577,7 +577,7 @@ struct ceph_file_info { /* readdir: position within a frag */ unsigned offset; /* offset of last chunk, adjusted for . and .. */ - u64 next_offset; /* offset of next chunk (last_name's + 1) */ + unsigned next_offset; /* offset of next chunk (last_name's + 1) */ char *last_name; /* last entry in previous chunk */ struct dentry *dentry; /* next dentry (for dcache readdir) */ int dir_release_count; @@ -691,6 +691,7 @@ extern const struct inode_operations ceph_file_iops; extern struct inode *ceph_alloc_inode(struct super_block *sb); extern void ceph_destroy_inode(struct inode *inode); +extern int ceph_drop_inode(struct inode *inode); extern struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino); @@ -724,6 +725,9 @@ extern int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry, /* xattr.c */ extern int ceph_setxattr(struct dentry *, const char *, const void *, size_t, int); +int __ceph_setxattr(struct dentry *, const char *, const void *, size_t, int); +ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t); +int __ceph_removexattr(struct dentry *, const char *); extern ssize_t ceph_getxattr(struct dentry *, const char *, void *, size_t); extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); extern int ceph_removexattr(struct dentry *, const char *); @@ -732,6 +736,42 @@ extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); extern void __init ceph_xattr_init(void); extern void ceph_xattr_exit(void); +/* acl.c */ +extern const struct xattr_handler *ceph_xattr_handlers[]; + +#ifdef CONFIG_CEPH_FS_POSIX_ACL + +struct posix_acl *ceph_get_acl(struct inode *, int); +int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type); +int ceph_init_acl(struct dentry *, struct inode *, struct inode *); + +static inline void ceph_forget_all_cached_acls(struct inode *inode) +{ + forget_all_cached_acls(inode); +} + +#else + +#define ceph_get_acl NULL +#define ceph_set_acl NULL + +static inline int ceph_init_acl(struct dentry *dentry, struct inode *inode, + struct inode *dir) +{ + return 0; +} + +static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode) +{ + return 0; +} + +static inline void ceph_forget_all_cached_acls(struct inode *inode) +{ +} + +#endif + /* caps.c */ extern const char *ceph_cap_string(int c); extern void ceph_handle_caps(struct ceph_mds_session *session, @@ -744,6 +784,7 @@ extern int ceph_add_cap(struct inode *inode, extern void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release); extern void ceph_put_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap); +extern int ceph_is_any_caps(struct inode *inode); extern void __queue_cap_release(struct ceph_mds_session *session, u64 ino, u64 cap_id, u32 migrate_seq, u32 issue_seq); @@ -830,6 +871,7 @@ extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg); extern const struct export_operations ceph_export_ops; /* locks.c */ +extern __init void ceph_flock_init(void); extern int ceph_lock(struct file *file, int cmd, struct file_lock *fl); extern int ceph_flock(struct file *file, int cmd, struct file_lock *fl); extern void ceph_count_locks(struct inode *inode, int *p_num, int *f_num); diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c index be661d8f532a..c9c2b887381e 100644 --- a/fs/ceph/xattr.c +++ b/fs/ceph/xattr.c @@ -6,16 +6,33 @@ #include <linux/ceph/decode.h> #include <linux/xattr.h> +#include <linux/posix_acl_xattr.h> #include <linux/slab.h> #define XATTR_CEPH_PREFIX "ceph." #define XATTR_CEPH_PREFIX_LEN (sizeof (XATTR_CEPH_PREFIX) - 1) +static int __remove_xattr(struct ceph_inode_info *ci, + struct ceph_inode_xattr *xattr); + +/* + * List of handlers for synthetic system.* attributes. Other + * attributes are handled directly. + */ +const struct xattr_handler *ceph_xattr_handlers[] = { +#ifdef CONFIG_CEPH_FS_POSIX_ACL + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, +#endif + NULL, +}; + static bool ceph_is_valid_xattr(const char *name) { return !strncmp(name, XATTR_CEPH_PREFIX, XATTR_CEPH_PREFIX_LEN) || !strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) || + !strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN) || !strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) || !strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN); } @@ -47,32 +64,48 @@ static bool ceph_vxattrcb_layout_exists(struct ceph_inode_info *ci) } static size_t ceph_vxattrcb_layout(struct ceph_inode_info *ci, char *val, - size_t size) + size_t size) { int ret; struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb); struct ceph_osd_client *osdc = &fsc->client->osdc; s64 pool = ceph_file_layout_pg_pool(ci->i_layout); const char *pool_name; + char buf[128]; dout("ceph_vxattrcb_layout %p\n", &ci->vfs_inode); down_read(&osdc->map_sem); pool_name = ceph_pg_pool_name_by_id(osdc->osdmap, pool); - if (pool_name) - ret = snprintf(val, size, - "stripe_unit=%lld stripe_count=%lld object_size=%lld pool=%s", + if (pool_name) { + size_t len = strlen(pool_name); + ret = snprintf(buf, sizeof(buf), + "stripe_unit=%lld stripe_count=%lld object_size=%lld pool=", (unsigned long long)ceph_file_layout_su(ci->i_layout), (unsigned long long)ceph_file_layout_stripe_count(ci->i_layout), - (unsigned long long)ceph_file_layout_object_size(ci->i_layout), - pool_name); - else - ret = snprintf(val, size, + (unsigned long long)ceph_file_layout_object_size(ci->i_layout)); + if (!size) { + ret += len; + } else if (ret + len > size) { + ret = -ERANGE; + } else { + memcpy(val, buf, ret); + memcpy(val + ret, pool_name, len); + ret += len; + } + } else { + ret = snprintf(buf, sizeof(buf), "stripe_unit=%lld stripe_count=%lld object_size=%lld pool=%lld", (unsigned long long)ceph_file_layout_su(ci->i_layout), (unsigned long long)ceph_file_layout_stripe_count(ci->i_layout), (unsigned long long)ceph_file_layout_object_size(ci->i_layout), (unsigned long long)pool); - + if (size) { + if (ret <= size) + memcpy(val, buf, ret); + else + ret = -ERANGE; + } + } up_read(&osdc->map_sem); return ret; } @@ -198,7 +231,7 @@ static struct ceph_vxattr ceph_dir_vxattrs[] = { .name_size = sizeof("ceph.dir.layout"), .getxattr_cb = ceph_vxattrcb_layout, .readonly = false, - .hidden = false, + .hidden = true, .exists_cb = ceph_vxattrcb_layout_exists, }, XATTR_LAYOUT_FIELD(dir, layout, stripe_unit), @@ -225,7 +258,7 @@ static struct ceph_vxattr ceph_file_vxattrs[] = { .name_size = sizeof("ceph.file.layout"), .getxattr_cb = ceph_vxattrcb_layout, .readonly = false, - .hidden = false, + .hidden = true, .exists_cb = ceph_vxattrcb_layout_exists, }, XATTR_LAYOUT_FIELD(file, layout, stripe_unit), @@ -305,8 +338,7 @@ static struct ceph_vxattr *ceph_match_vxattr(struct inode *inode, static int __set_xattr(struct ceph_inode_info *ci, const char *name, int name_len, const char *val, int val_len, - int dirty, - int should_free_name, int should_free_val, + int flags, int update_xattr, struct ceph_inode_xattr **newxattr) { struct rb_node **p; @@ -335,12 +367,31 @@ static int __set_xattr(struct ceph_inode_info *ci, xattr = NULL; } + if (update_xattr) { + int err = 0; + if (xattr && (flags & XATTR_CREATE)) + err = -EEXIST; + else if (!xattr && (flags & XATTR_REPLACE)) + err = -ENODATA; + if (err) { + kfree(name); + kfree(val); + return err; + } + if (update_xattr < 0) { + if (xattr) + __remove_xattr(ci, xattr); + kfree(name); + return 0; + } + } + if (!xattr) { new = 1; xattr = *newxattr; xattr->name = name; xattr->name_len = name_len; - xattr->should_free_name = should_free_name; + xattr->should_free_name = update_xattr; ci->i_xattrs.count++; dout("__set_xattr count=%d\n", ci->i_xattrs.count); @@ -350,7 +401,7 @@ static int __set_xattr(struct ceph_inode_info *ci, if (xattr->should_free_val) kfree((void *)xattr->val); - if (should_free_name) { + if (update_xattr) { kfree((void *)name); name = xattr->name; } @@ -365,8 +416,8 @@ static int __set_xattr(struct ceph_inode_info *ci, xattr->val = ""; xattr->val_len = val_len; - xattr->dirty = dirty; - xattr->should_free_val = (val && should_free_val); + xattr->dirty = update_xattr; + xattr->should_free_val = (val && update_xattr); if (new) { rb_link_node(&xattr->node, parent, p); @@ -428,7 +479,7 @@ static int __remove_xattr(struct ceph_inode_info *ci, struct ceph_inode_xattr *xattr) { if (!xattr) - return -EOPNOTSUPP; + return -ENODATA; rb_erase(&xattr->node, &ci->i_xattrs.index); @@ -574,7 +625,7 @@ start: p += len; err = __set_xattr(ci, name, namelen, val, len, - 0, 0, 0, &xattrs[numattr]); + 0, 0, &xattrs[numattr]); if (err < 0) goto bad; @@ -663,10 +714,9 @@ void __ceph_build_xattrs_blob(struct ceph_inode_info *ci) } } -ssize_t ceph_getxattr(struct dentry *dentry, const char *name, void *value, +ssize_t __ceph_getxattr(struct inode *inode, const char *name, void *value, size_t size) { - struct inode *inode = dentry->d_inode; struct ceph_inode_info *ci = ceph_inode(inode); int err; struct ceph_inode_xattr *xattr; @@ -675,7 +725,6 @@ ssize_t ceph_getxattr(struct dentry *dentry, const char *name, void *value, if (!ceph_is_valid_xattr(name)) return -ENODATA; - /* let's see if a virtual xattr was requested */ vxattr = ceph_match_vxattr(inode, name); if (vxattr && !(vxattr->exists_cb && !vxattr->exists_cb(ci))) { @@ -725,6 +774,15 @@ out: return err; } +ssize_t ceph_getxattr(struct dentry *dentry, const char *name, void *value, + size_t size) +{ + if (!strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN)) + return generic_getxattr(dentry, name, value, size); + + return __ceph_getxattr(dentry->d_inode, name, value, size); +} + ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size) { struct inode *inode = dentry->d_inode; @@ -800,7 +858,6 @@ static int ceph_sync_setxattr(struct dentry *dentry, const char *name, struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb); struct inode *inode = dentry->d_inode; struct ceph_inode_info *ci = ceph_inode(inode); - struct inode *parent_inode; struct ceph_mds_request *req; struct ceph_mds_client *mdsc = fsc->mdsc; int err; @@ -829,6 +886,9 @@ static int ceph_sync_setxattr(struct dentry *dentry, const char *name, dout("setxattr value=%.*s\n", (int)size, value); + if (!value) + flags |= CEPH_XATTR_REMOVE; + /* do request */ req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETXATTR, USE_AUTH_MDS); @@ -848,9 +908,7 @@ static int ceph_sync_setxattr(struct dentry *dentry, const char *name, req->r_data_len = size; dout("xattr.ver (before): %lld\n", ci->i_xattrs.version); - parent_inode = ceph_get_dentry_parent_inode(dentry); - err = ceph_mdsc_do_request(mdsc, parent_inode, req); - iput(parent_inode); + err = ceph_mdsc_do_request(mdsc, NULL, req); ceph_mdsc_put_request(req); dout("xattr.ver (after): %lld\n", ci->i_xattrs.version); @@ -863,15 +921,15 @@ out: return err; } -int ceph_setxattr(struct dentry *dentry, const char *name, - const void *value, size_t size, int flags) +int __ceph_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags) { struct inode *inode = dentry->d_inode; struct ceph_vxattr *vxattr; struct ceph_inode_info *ci = ceph_inode(inode); int issued; int err; - int dirty; + int dirty = 0; int name_len = strlen(name); int val_len = size; char *newname = NULL; @@ -879,9 +937,6 @@ int ceph_setxattr(struct dentry *dentry, const char *name, struct ceph_inode_xattr *xattr = NULL; int required_blob_size; - if (ceph_snap(inode) != CEPH_NOSNAP) - return -EROFS; - if (!ceph_is_valid_xattr(name)) return -EOPNOTSUPP; @@ -935,12 +990,14 @@ retry: goto retry; } - err = __set_xattr(ci, newname, name_len, newval, - val_len, 1, 1, 1, &xattr); + err = __set_xattr(ci, newname, name_len, newval, val_len, + flags, value ? 1 : -1, &xattr); - dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL); - ci->i_xattrs.dirty = true; - inode->i_ctime = CURRENT_TIME; + if (!err) { + dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL); + ci->i_xattrs.dirty = true; + inode->i_ctime = CURRENT_TIME; + } spin_unlock(&ci->i_ceph_lock); if (dirty) @@ -958,12 +1015,23 @@ out: return err; } +int ceph_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags) +{ + if (ceph_snap(dentry->d_inode) != CEPH_NOSNAP) + return -EROFS; + + if (!strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN)) + return generic_setxattr(dentry, name, value, size, flags); + + return __ceph_setxattr(dentry, name, value, size, flags); +} + static int ceph_send_removexattr(struct dentry *dentry, const char *name) { struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb); struct ceph_mds_client *mdsc = fsc->mdsc; struct inode *inode = dentry->d_inode; - struct inode *parent_inode; struct ceph_mds_request *req; int err; @@ -977,14 +1045,12 @@ static int ceph_send_removexattr(struct dentry *dentry, const char *name) req->r_num_caps = 1; req->r_path2 = kstrdup(name, GFP_NOFS); - parent_inode = ceph_get_dentry_parent_inode(dentry); - err = ceph_mdsc_do_request(mdsc, parent_inode, req); - iput(parent_inode); + err = ceph_mdsc_do_request(mdsc, NULL, req); ceph_mdsc_put_request(req); return err; } -int ceph_removexattr(struct dentry *dentry, const char *name) +int __ceph_removexattr(struct dentry *dentry, const char *name) { struct inode *inode = dentry->d_inode; struct ceph_vxattr *vxattr; @@ -994,9 +1060,6 @@ int ceph_removexattr(struct dentry *dentry, const char *name) int required_blob_size; int dirty; - if (ceph_snap(inode) != CEPH_NOSNAP) - return -EROFS; - if (!ceph_is_valid_xattr(name)) return -EOPNOTSUPP; @@ -1053,3 +1116,13 @@ out: return err; } +int ceph_removexattr(struct dentry *dentry, const char *name) +{ + if (ceph_snap(dentry->d_inode) != CEPH_NOSNAP) + return -EROFS; + + if (!strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN)) + return generic_removexattr(dentry, name); + + return __ceph_removexattr(dentry, name); +} diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c index 51f5e0ee7237..7ff866dbb89e 100644 --- a/fs/cifs/cifsacl.c +++ b/fs/cifs/cifsacl.c @@ -865,8 +865,8 @@ static int build_sec_desc(struct cifs_ntsd *pntsd, struct cifs_ntsd *pnntsd, return rc; } -static struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb, - __u16 fid, u32 *pacllen) +struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb, + const struct cifs_fid *cifsfid, u32 *pacllen) { struct cifs_ntsd *pntsd = NULL; unsigned int xid; @@ -877,7 +877,8 @@ static struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb, return ERR_CAST(tlink); xid = get_xid(); - rc = CIFSSMBGetCIFSACL(xid, tlink_tcon(tlink), fid, &pntsd, pacllen); + rc = CIFSSMBGetCIFSACL(xid, tlink_tcon(tlink), cifsfid->netfid, &pntsd, + pacllen); free_xid(xid); cifs_put_tlink(tlink); @@ -895,9 +896,10 @@ static struct cifs_ntsd *get_cifs_acl_by_path(struct cifs_sb_info *cifs_sb, int oplock = 0; unsigned int xid; int rc, create_options = 0; - __u16 fid; struct cifs_tcon *tcon; struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); + struct cifs_fid fid; + struct cifs_open_parms oparms; if (IS_ERR(tlink)) return ERR_CAST(tlink); @@ -908,12 +910,19 @@ static struct cifs_ntsd *get_cifs_acl_by_path(struct cifs_sb_info *cifs_sb, if (backup_cred(cifs_sb)) create_options |= CREATE_OPEN_BACKUP_INTENT; - rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, READ_CONTROL, - create_options, &fid, &oplock, NULL, cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); + oparms.tcon = tcon; + oparms.cifs_sb = cifs_sb; + oparms.desired_access = READ_CONTROL; + oparms.create_options = create_options; + oparms.disposition = FILE_OPEN; + oparms.path = path; + oparms.fid = &fid; + oparms.reconnect = false; + + rc = CIFS_open(xid, &oparms, &oplock, NULL); if (!rc) { - rc = CIFSSMBGetCIFSACL(xid, tcon, fid, &pntsd, pacllen); - CIFSSMBClose(xid, tcon, fid); + rc = CIFSSMBGetCIFSACL(xid, tcon, fid.netfid, &pntsd, pacllen); + CIFSSMBClose(xid, tcon, fid.netfid); } cifs_put_tlink(tlink); @@ -938,7 +947,7 @@ struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *cifs_sb, if (!open_file) return get_cifs_acl_by_path(cifs_sb, path, pacllen); - pntsd = get_cifs_acl_by_fid(cifs_sb, open_file->fid.netfid, pacllen); + pntsd = get_cifs_acl_by_fid(cifs_sb, &open_file->fid, pacllen); cifsFileInfo_put(open_file); return pntsd; } @@ -950,10 +959,11 @@ int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen, int oplock = 0; unsigned int xid; int rc, access_flags, create_options = 0; - __u16 fid; struct cifs_tcon *tcon; struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); + struct cifs_fid fid; + struct cifs_open_parms oparms; if (IS_ERR(tlink)) return PTR_ERR(tlink); @@ -969,18 +979,25 @@ int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen, else access_flags = WRITE_DAC; - rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, access_flags, - create_options, &fid, &oplock, NULL, cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); + oparms.tcon = tcon; + oparms.cifs_sb = cifs_sb; + oparms.desired_access = access_flags; + oparms.create_options = create_options; + oparms.disposition = FILE_OPEN; + oparms.path = path; + oparms.fid = &fid; + oparms.reconnect = false; + + rc = CIFS_open(xid, &oparms, &oplock, NULL); if (rc) { cifs_dbg(VFS, "Unable to open file to set ACL\n"); goto out; } - rc = CIFSSMBSetCIFSACL(xid, tcon, fid, pnntsd, acllen, aclflag); + rc = CIFSSMBSetCIFSACL(xid, tcon, fid.netfid, pnntsd, acllen, aclflag); cifs_dbg(NOISY, "SetCIFSACL rc = %d\n", rc); - CIFSSMBClose(xid, tcon, fid); + CIFSSMBClose(xid, tcon, fid.netfid); out: free_xid(xid); cifs_put_tlink(tlink); @@ -990,19 +1007,31 @@ out: /* Translate the CIFS ACL (simlar to NTFS ACL) for a file into mode bits */ int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr, - struct inode *inode, const char *path, const __u16 *pfid) + struct inode *inode, const char *path, + const struct cifs_fid *pfid) { struct cifs_ntsd *pntsd = NULL; u32 acllen = 0; int rc = 0; + struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); + struct cifs_tcon *tcon; cifs_dbg(NOISY, "converting ACL to mode for %s\n", path); - if (pfid) - pntsd = get_cifs_acl_by_fid(cifs_sb, *pfid, &acllen); - else - pntsd = get_cifs_acl(cifs_sb, inode, path, &acllen); + if (IS_ERR(tlink)) + return PTR_ERR(tlink); + tcon = tlink_tcon(tlink); + if (pfid && (tcon->ses->server->ops->get_acl_by_fid)) + pntsd = tcon->ses->server->ops->get_acl_by_fid(cifs_sb, pfid, + &acllen); + else if (tcon->ses->server->ops->get_acl) + pntsd = tcon->ses->server->ops->get_acl(cifs_sb, inode, path, + &acllen); + else { + cifs_put_tlink(tlink); + return -EOPNOTSUPP; + } /* if we can retrieve the ACL, now parse Access Control Entries, ACEs */ if (IS_ERR(pntsd)) { rc = PTR_ERR(pntsd); @@ -1014,6 +1043,8 @@ cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr, cifs_dbg(VFS, "parse sec desc failed rc = %d\n", rc); } + cifs_put_tlink(tlink); + return rc; } @@ -1027,15 +1058,30 @@ id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 nmode, __u32 secdesclen = 0; struct cifs_ntsd *pntsd = NULL; /* acl obtained from server */ struct cifs_ntsd *pnntsd = NULL; /* modified acl to be sent to server */ + struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); + struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); + struct cifs_tcon *tcon; + + if (IS_ERR(tlink)) + return PTR_ERR(tlink); + tcon = tlink_tcon(tlink); cifs_dbg(NOISY, "set ACL from mode for %s\n", path); /* Get the security descriptor */ - pntsd = get_cifs_acl(CIFS_SB(inode->i_sb), inode, path, &secdesclen); + + if (tcon->ses->server->ops->get_acl == NULL) { + cifs_put_tlink(tlink); + return -EOPNOTSUPP; + } + + pntsd = tcon->ses->server->ops->get_acl(cifs_sb, inode, path, + &secdesclen); if (IS_ERR(pntsd)) { rc = PTR_ERR(pntsd); cifs_dbg(VFS, "%s: error %d getting sec desc\n", __func__, rc); - goto out; + cifs_put_tlink(tlink); + return rc; } /* @@ -1048,6 +1094,7 @@ id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 nmode, pnntsd = kmalloc(secdesclen, GFP_KERNEL); if (!pnntsd) { kfree(pntsd); + cifs_put_tlink(tlink); return -ENOMEM; } @@ -1056,14 +1103,18 @@ id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 nmode, cifs_dbg(NOISY, "build_sec_desc rc: %d\n", rc); + if (tcon->ses->server->ops->set_acl == NULL) + rc = -EOPNOTSUPP; + if (!rc) { /* Set the security descriptor */ - rc = set_cifs_acl(pnntsd, secdesclen, inode, path, aclflag); + rc = tcon->ses->server->ops->set_acl(pnntsd, secdesclen, inode, + path, aclflag); cifs_dbg(NOISY, "set_cifs_acl rc: %d\n", rc); } + cifs_put_tlink(tlink); kfree(pnntsd); kfree(pntsd); -out: return rc; } diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 849f6132b327..2c70cbe35d39 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -286,7 +286,7 @@ cifs_destroy_inode(struct inode *inode) static void cifs_evict_inode(struct inode *inode) { - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); cifs_fscache_release_inode_cookie(inode); } @@ -541,6 +541,7 @@ static int cifs_show_stats(struct seq_file *s, struct dentry *root) static int cifs_remount(struct super_block *sb, int *flags, char *data) { + sync_filesystem(sb); *flags |= MS_NODIRATIME; return 0; } @@ -1005,7 +1006,7 @@ cifs_init_once(void *inode) init_rwsem(&cifsi->lock_sem); } -static int +static int __init cifs_init_inodecache(void) { cifs_inode_cachep = kmem_cache_create("cifs_inode_cache", diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index f918a998a087..c0f3718b77a8 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -323,7 +323,8 @@ struct smb_version_operations { /* async read from the server */ int (*async_readv)(struct cifs_readdata *); /* async write to the server */ - int (*async_writev)(struct cifs_writedata *); + int (*async_writev)(struct cifs_writedata *, + void (*release)(struct kref *)); /* sync read from the server */ int (*sync_read)(const unsigned int, struct cifsFileInfo *, struct cifs_io_parms *, unsigned int *, char **, @@ -370,8 +371,12 @@ struct smb_version_operations { void (*new_lease_key)(struct cifs_fid *); int (*generate_signingkey)(struct cifs_ses *); int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *); - int (*query_mf_symlink)(const unsigned char *, char *, unsigned int *, - struct cifs_sb_info *, unsigned int); + int (*query_mf_symlink)(unsigned int, struct cifs_tcon *, + struct cifs_sb_info *, const unsigned char *, + char *, unsigned int *); + int (*create_mf_symlink)(unsigned int, struct cifs_tcon *, + struct cifs_sb_info *, const unsigned char *, + char *, unsigned int *); /* if we can do cache read operations */ bool (*is_read_op)(__u32); /* set oplock level for the inode */ @@ -385,6 +390,18 @@ struct smb_version_operations { struct cifsFileInfo *target_file, u64 src_off, u64 len, u64 dest_off); int (*validate_negotiate)(const unsigned int, struct cifs_tcon *); + ssize_t (*query_all_EAs)(const unsigned int, struct cifs_tcon *, + const unsigned char *, const unsigned char *, char *, + size_t, const struct nls_table *, int); + int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *, + const char *, const void *, const __u16, + const struct nls_table *, int); + struct cifs_ntsd * (*get_acl)(struct cifs_sb_info *, struct inode *, + const char *, u32 *); + struct cifs_ntsd * (*get_acl_by_fid)(struct cifs_sb_info *, + const struct cifs_fid *, u32 *); + int (*set_acl)(struct cifs_ntsd *, __u32, struct inode *, const char *, + int); }; struct smb_version_values { @@ -496,7 +513,7 @@ struct cifs_mnt_data { static inline unsigned int get_rfc1002_length(void *buf) { - return be32_to_cpu(*((__be32 *)buf)); + return be32_to_cpu(*((__be32 *)buf)) & 0xffffff; } static inline void @@ -1054,7 +1071,7 @@ struct cifs_writedata { unsigned int pagesz; unsigned int tailsz; unsigned int nr_pages; - struct page *pages[1]; + struct page *pages[]; }; /* diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index 2c29db6a247e..acc4ee8ed075 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -151,7 +151,7 @@ extern struct inode *cifs_iget(struct super_block *sb, extern int cifs_get_inode_info(struct inode **inode, const char *full_path, FILE_ALL_INFO *data, struct super_block *sb, - int xid, const __u16 *fid); + int xid, const struct cifs_fid *fid); extern int cifs_get_inode_info_unix(struct inode **pinode, const unsigned char *search_path, struct super_block *sb, unsigned int xid); @@ -162,11 +162,13 @@ extern int cifs_rename_pending_delete(const char *full_path, const unsigned int xid); extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr, struct inode *inode, - const char *path, const __u16 *pfid); + const char *path, const struct cifs_fid *pfid); extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64, kuid_t, kgid_t); extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *, const char *, u32 *); +extern struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *, + const struct cifs_fid *, u32 *); extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *, const char *, int); @@ -362,11 +364,8 @@ extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, const struct nls_table *nls_codepage); extern int CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid); -extern int CIFSSMBOpen(const unsigned int xid, struct cifs_tcon *tcon, - const char *fileName, const int disposition, - const int access_flags, const int omode, - __u16 *netfid, int *pOplock, FILE_ALL_INFO *, - const struct nls_table *nls_codepage, int remap); +extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, + int *oplock, FILE_ALL_INFO *buf); extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, const char *fileName, const int disposition, const int access_flags, const int omode, @@ -476,8 +475,8 @@ extern int CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, const int netfid, __u64 *pExtAttrBits, __u64 *pMask); extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb); -extern bool CIFSCouldBeMFSymlink(const struct cifs_fattr *fattr); -extern int CIFSCheckMFSymlink(unsigned int xid, struct cifs_tcon *tcon, +extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr); +extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr, const unsigned char *path); @@ -491,12 +490,18 @@ void cifs_readdata_release(struct kref *refcount); int cifs_async_readv(struct cifs_readdata *rdata); int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid); -int cifs_async_writev(struct cifs_writedata *wdata); +int cifs_async_writev(struct cifs_writedata *wdata, + void (*release)(struct kref *kref)); void cifs_writev_complete(struct work_struct *work); struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete); void cifs_writedata_release(struct kref *refcount); -int open_query_close_cifs_symlink(const unsigned char *path, char *pbuf, - unsigned int *pbytes_read, struct cifs_sb_info *cifs_sb, - unsigned int xid); +int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + const unsigned char *path, char *pbuf, + unsigned int *pbytes_read); +int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + const unsigned char *path, char *pbuf, + unsigned int *pbytes_written); #endif /* _CIFSPROTO_H */ diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index d707edb6b852..f3264bd7a83d 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -1273,104 +1273,124 @@ OldOpenRetry: } int -CIFSSMBOpen(const unsigned int xid, struct cifs_tcon *tcon, - const char *fileName, const int openDisposition, - const int access_flags, const int create_options, __u16 *netfid, - int *pOplock, FILE_ALL_INFO *pfile_info, - const struct nls_table *nls_codepage, int remap) +CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock, + FILE_ALL_INFO *buf) { int rc = -EACCES; - OPEN_REQ *pSMB = NULL; - OPEN_RSP *pSMBr = NULL; + OPEN_REQ *req = NULL; + OPEN_RSP *rsp = NULL; int bytes_returned; int name_len; __u16 count; + struct cifs_sb_info *cifs_sb = oparms->cifs_sb; + struct cifs_tcon *tcon = oparms->tcon; + int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; + const struct nls_table *nls = cifs_sb->local_nls; + int create_options = oparms->create_options; + int desired_access = oparms->desired_access; + int disposition = oparms->disposition; + const char *path = oparms->path; openRetry: - rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, - (void **) &pSMBr); + rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req, + (void **)&rsp); if (rc) return rc; - pSMB->AndXCommand = 0xFF; /* none */ + /* no commands go after this */ + req->AndXCommand = 0xFF; - if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { - count = 1; /* account for one byte pad to word boundary */ - name_len = - cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), - fileName, PATH_MAX, nls_codepage, remap); - name_len++; /* trailing null */ + if (req->hdr.Flags2 & SMBFLG2_UNICODE) { + /* account for one byte pad to word boundary */ + count = 1; + name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1), + path, PATH_MAX, nls, remap); + /* trailing null */ + name_len++; name_len *= 2; - pSMB->NameLength = cpu_to_le16(name_len); - } else { /* BB improve check for buffer overruns BB */ - count = 0; /* no pad */ - name_len = strnlen(fileName, PATH_MAX); - name_len++; /* trailing null */ - pSMB->NameLength = cpu_to_le16(name_len); - strncpy(pSMB->fileName, fileName, name_len); + req->NameLength = cpu_to_le16(name_len); + } else { + /* BB improve check for buffer overruns BB */ + /* no pad */ + count = 0; + name_len = strnlen(path, PATH_MAX); + /* trailing null */ + name_len++; + req->NameLength = cpu_to_le16(name_len); + strncpy(req->fileName, path, name_len); } - if (*pOplock & REQ_OPLOCK) - pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); - else if (*pOplock & REQ_BATCHOPLOCK) - pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); - pSMB->DesiredAccess = cpu_to_le32(access_flags); - pSMB->AllocationSize = 0; - /* set file as system file if special file such - as fifo and server expecting SFU style and - no Unix extensions */ + + if (*oplock & REQ_OPLOCK) + req->OpenFlags = cpu_to_le32(REQ_OPLOCK); + else if (*oplock & REQ_BATCHOPLOCK) + req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); + + req->DesiredAccess = cpu_to_le32(desired_access); + req->AllocationSize = 0; + + /* + * Set file as system file if special file such as fifo and server + * expecting SFU style and no Unix extensions. + */ if (create_options & CREATE_OPTION_SPECIAL) - pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); + req->FileAttributes = cpu_to_le32(ATTR_SYSTEM); else - pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); + req->FileAttributes = cpu_to_le32(ATTR_NORMAL); - /* XP does not handle ATTR_POSIX_SEMANTICS */ - /* but it helps speed up case sensitive checks for other - servers such as Samba */ + /* + * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case + * sensitive checks for other servers such as Samba. + */ if (tcon->ses->capabilities & CAP_UNIX) - pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); + req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); if (create_options & CREATE_OPTION_READONLY) - pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); + req->FileAttributes |= cpu_to_le32(ATTR_READONLY); + + req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); + req->CreateDisposition = cpu_to_le32(disposition); + req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); - pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); - pSMB->CreateDisposition = cpu_to_le32(openDisposition); - pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); /* BB Expirement with various impersonation levels and verify */ - pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); - pSMB->SecurityFlags = - SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; + req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); + req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY; count += name_len; - inc_rfc1001_len(pSMB, count); + inc_rfc1001_len(req, count); - pSMB->ByteCount = cpu_to_le16(count); - /* long_op set to 1 to allow for oplock break timeouts */ - rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, - (struct smb_hdr *)pSMBr, &bytes_returned, 0); + req->ByteCount = cpu_to_le16(count); + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req, + (struct smb_hdr *)rsp, &bytes_returned, 0); cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); if (rc) { cifs_dbg(FYI, "Error in Open = %d\n", rc); - } else { - *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ - *netfid = pSMBr->Fid; /* cifs fid stays in le */ - /* Let caller know file was created so we can set the mode. */ - /* Do we care about the CreateAction in any other cases? */ - if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) - *pOplock |= CIFS_CREATE_ACTION; - if (pfile_info) { - memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, - 36 /* CreationTime to Attributes */); - /* the file_info buf is endian converted by caller */ - pfile_info->AllocationSize = pSMBr->AllocationSize; - pfile_info->EndOfFile = pSMBr->EndOfFile; - pfile_info->NumberOfLinks = cpu_to_le32(1); - pfile_info->DeletePending = 0; - } + cifs_buf_release(req); + if (rc == -EAGAIN) + goto openRetry; + return rc; } - cifs_buf_release(pSMB); - if (rc == -EAGAIN) - goto openRetry; + /* 1 byte no need to le_to_cpu */ + *oplock = rsp->OplockLevel; + /* cifs fid stays in le */ + oparms->fid->netfid = rsp->Fid; + + /* Let caller know file was created so we can set the mode. */ + /* Do we care about the CreateAction in any other cases? */ + if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction) + *oplock |= CIFS_CREATE_ACTION; + + if (buf) { + /* copy from CreationTime to Attributes */ + memcpy((char *)buf, (char *)&rsp->CreationTime, 36); + /* the file_info buf is endian converted by caller */ + buf->AllocationSize = rsp->AllocationSize; + buf->EndOfFile = rsp->EndOfFile; + buf->NumberOfLinks = cpu_to_le32(1); + buf->DeletePending = 0; + } + + cifs_buf_release(req); return rc; } @@ -1890,7 +1910,7 @@ cifs_writev_requeue(struct cifs_writedata *wdata) do { server = tlink_tcon(wdata->cfile->tlink)->ses->server; - rc = server->ops->async_writev(wdata); + rc = server->ops->async_writev(wdata, cifs_writedata_release); } while (rc == -EAGAIN); for (i = 0; i < wdata->nr_pages; i++) { @@ -1942,15 +1962,9 @@ cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) { struct cifs_writedata *wdata; - /* this would overflow */ - if (nr_pages == 0) { - cifs_dbg(VFS, "%s: called with nr_pages == 0!\n", __func__); - return NULL; - } - /* writedata + number of page pointers */ wdata = kzalloc(sizeof(*wdata) + - sizeof(struct page *) * (nr_pages - 1), GFP_NOFS); + sizeof(struct page *) * nr_pages, GFP_NOFS); if (wdata != NULL) { kref_init(&wdata->refcount); INIT_LIST_HEAD(&wdata->list); @@ -2011,7 +2025,8 @@ cifs_writev_callback(struct mid_q_entry *mid) /* cifs_async_writev - send an async write, and set up mid to handle result */ int -cifs_async_writev(struct cifs_writedata *wdata) +cifs_async_writev(struct cifs_writedata *wdata, + void (*release)(struct kref *kref)) { int rc = -EACCES; WRITE_REQ *smb = NULL; @@ -2085,7 +2100,7 @@ cifs_async_writev(struct cifs_writedata *wdata) if (rc == 0) cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); else - kref_put(&wdata->refcount, cifs_writedata_release); + kref_put(&wdata->refcount, release); async_writev_out: cifs_small_buf_release(smb); diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c index a514e0a65f69..3db0c5fd9a11 100644 --- a/fs/cifs/dir.c +++ b/fs/cifs/dir.c @@ -378,7 +378,7 @@ cifs_create_get_file_info: xid); else { rc = cifs_get_inode_info(&newinode, full_path, buf, inode->i_sb, - xid, &fid->netfid); + xid, fid); if (newinode) { if (server->ops->set_lease_key) server->ops->set_lease_key(newinode, fid); @@ -565,12 +565,13 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode, int create_options = CREATE_NOT_DIR | CREATE_OPTION_SPECIAL; struct cifs_sb_info *cifs_sb; struct tcon_link *tlink; - struct cifs_tcon *pTcon; + struct cifs_tcon *tcon; struct cifs_io_parms io_parms; char *full_path = NULL; struct inode *newinode = NULL; int oplock = 0; - u16 fileHandle; + struct cifs_fid fid; + struct cifs_open_parms oparms; FILE_ALL_INFO *buf = NULL; unsigned int bytes_written; struct win_dev *pdev; @@ -583,7 +584,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode, if (IS_ERR(tlink)) return PTR_ERR(tlink); - pTcon = tlink_tcon(tlink); + tcon = tlink_tcon(tlink); xid = get_xid(); @@ -593,7 +594,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode, goto mknod_out; } - if (pTcon->unix_ext) { + if (tcon->unix_ext) { struct cifs_unix_set_info_args args = { .mode = mode & ~current_umask(), .ctime = NO_CHANGE_64, @@ -608,7 +609,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode, args.uid = INVALID_UID; /* no change */ args.gid = INVALID_GID; /* no change */ } - rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, &args, + rc = CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); @@ -640,42 +641,44 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode, if (backup_cred(cifs_sb)) create_options |= CREATE_OPEN_BACKUP_INTENT; - rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_CREATE, - GENERIC_WRITE, create_options, - &fileHandle, &oplock, buf, cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); + oparms.tcon = tcon; + oparms.cifs_sb = cifs_sb; + oparms.desired_access = GENERIC_WRITE; + oparms.create_options = create_options; + oparms.disposition = FILE_CREATE; + oparms.path = full_path; + oparms.fid = &fid; + oparms.reconnect = false; + + rc = CIFS_open(xid, &oparms, &oplock, buf); if (rc) goto mknod_out; - /* BB Do not bother to decode buf since no local inode yet to put - * timestamps in, but we can reuse it safely */ + /* + * BB Do not bother to decode buf since no local inode yet to put + * timestamps in, but we can reuse it safely. + */ pdev = (struct win_dev *)buf; - io_parms.netfid = fileHandle; + io_parms.netfid = fid.netfid; io_parms.pid = current->tgid; - io_parms.tcon = pTcon; + io_parms.tcon = tcon; io_parms.offset = 0; io_parms.length = sizeof(struct win_dev); if (S_ISCHR(mode)) { memcpy(pdev->type, "IntxCHR", 8); - pdev->major = - cpu_to_le64(MAJOR(device_number)); - pdev->minor = - cpu_to_le64(MINOR(device_number)); - rc = CIFSSMBWrite(xid, &io_parms, - &bytes_written, (char *)pdev, - NULL, 0); + pdev->major = cpu_to_le64(MAJOR(device_number)); + pdev->minor = cpu_to_le64(MINOR(device_number)); + rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, (char *)pdev, + NULL, 0); } else if (S_ISBLK(mode)) { memcpy(pdev->type, "IntxBLK", 8); - pdev->major = - cpu_to_le64(MAJOR(device_number)); - pdev->minor = - cpu_to_le64(MINOR(device_number)); - rc = CIFSSMBWrite(xid, &io_parms, - &bytes_written, (char *)pdev, - NULL, 0); + pdev->major = cpu_to_le64(MAJOR(device_number)); + pdev->minor = cpu_to_le64(MINOR(device_number)); + rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, (char *)pdev, + NULL, 0); } /* else if (S_ISFIFO) */ - CIFSSMBClose(xid, pTcon, fileHandle); + CIFSSMBClose(xid, tcon, fid.netfid); d_drop(direntry); /* FIXME: add code here to set EAs */ diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 5a5a87240fe2..216d7e99f921 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -244,7 +244,7 @@ cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb, xid); else rc = cifs_get_inode_info(&inode, full_path, buf, inode->i_sb, - xid, &fid->netfid); + xid, fid); out: kfree(buf); @@ -678,7 +678,7 @@ cifs_reopen_file(struct cifsFileInfo *cfile, bool can_flush) /* * Can not refresh inode by passing in file_info buf to be returned by - * CIFSSMBOpen and then calling get_inode_info with returned buf since + * ops->open and then calling get_inode_info with returned buf since * file might have write behind data that needs to be flushed and server * version of file size can be stale. If we knew for sure that inode was * not dirty locally we could do this. @@ -2043,7 +2043,8 @@ retry: } wdata->pid = wdata->cfile->pid; server = tlink_tcon(wdata->cfile->tlink)->ses->server; - rc = server->ops->async_writev(wdata); + rc = server->ops->async_writev(wdata, + cifs_writedata_release); } while (wbc->sync_mode == WB_SYNC_ALL && rc == -EAGAIN); for (i = 0; i < nr_pages; ++i) @@ -2331,9 +2332,20 @@ size_t get_numpages(const size_t wsize, const size_t len, size_t *cur_len) } static void -cifs_uncached_writev_complete(struct work_struct *work) +cifs_uncached_writedata_release(struct kref *refcount) { int i; + struct cifs_writedata *wdata = container_of(refcount, + struct cifs_writedata, refcount); + + for (i = 0; i < wdata->nr_pages; i++) + put_page(wdata->pages[i]); + cifs_writedata_release(refcount); +} + +static void +cifs_uncached_writev_complete(struct work_struct *work) +{ struct cifs_writedata *wdata = container_of(work, struct cifs_writedata, work); struct inode *inode = wdata->cfile->dentry->d_inode; @@ -2347,12 +2359,7 @@ cifs_uncached_writev_complete(struct work_struct *work) complete(&wdata->done); - if (wdata->result != -EAGAIN) { - for (i = 0; i < wdata->nr_pages; i++) - put_page(wdata->pages[i]); - } - - kref_put(&wdata->refcount, cifs_writedata_release); + kref_put(&wdata->refcount, cifs_uncached_writedata_release); } /* attempt to send write to server, retry on any -EAGAIN errors */ @@ -2370,7 +2377,8 @@ cifs_uncached_retry_writev(struct cifs_writedata *wdata) if (rc != 0) continue; } - rc = server->ops->async_writev(wdata); + rc = server->ops->async_writev(wdata, + cifs_uncached_writedata_release); } while (rc == -EAGAIN); return rc; @@ -2381,7 +2389,7 @@ cifs_iovec_write(struct file *file, const struct iovec *iov, unsigned long nr_segs, loff_t *poffset) { unsigned long nr_pages, i; - size_t copied, len, cur_len; + size_t bytes, copied, len, cur_len; ssize_t total_written = 0; loff_t offset; struct iov_iter it; @@ -2436,14 +2444,45 @@ cifs_iovec_write(struct file *file, const struct iovec *iov, save_len = cur_len; for (i = 0; i < nr_pages; i++) { - copied = min_t(const size_t, cur_len, PAGE_SIZE); + bytes = min_t(const size_t, cur_len, PAGE_SIZE); copied = iov_iter_copy_from_user(wdata->pages[i], &it, - 0, copied); + 0, bytes); cur_len -= copied; iov_iter_advance(&it, copied); + /* + * If we didn't copy as much as we expected, then that + * may mean we trod into an unmapped area. Stop copying + * at that point. On the next pass through the big + * loop, we'll likely end up getting a zero-length + * write and bailing out of it. + */ + if (copied < bytes) + break; } cur_len = save_len - cur_len; + /* + * If we have no data to send, then that probably means that + * the copy above failed altogether. That's most likely because + * the address in the iovec was bogus. Set the rc to -EFAULT, + * free anything we allocated and bail out. + */ + if (!cur_len) { + for (i = 0; i < nr_pages; i++) + put_page(wdata->pages[i]); + kfree(wdata); + rc = -EFAULT; + break; + } + + /* + * i + 1 now represents the number of pages we actually used in + * the copy phase above. Bring nr_pages down to that, and free + * any pages that we didn't use. + */ + for ( ; nr_pages > i + 1; nr_pages--) + put_page(wdata->pages[nr_pages - 1]); + wdata->sync_mode = WB_SYNC_ALL; wdata->nr_pages = nr_pages; wdata->offset = (__u64)offset; @@ -2454,7 +2493,8 @@ cifs_iovec_write(struct file *file, const struct iovec *iov, wdata->tailsz = cur_len - ((nr_pages - 1) * PAGE_SIZE); rc = cifs_uncached_retry_writev(wdata); if (rc) { - kref_put(&wdata->refcount, cifs_writedata_release); + kref_put(&wdata->refcount, + cifs_uncached_writedata_release); break; } @@ -2496,7 +2536,7 @@ restart_loop: } } list_del_init(&wdata->list); - kref_put(&wdata->refcount, cifs_writedata_release); + kref_put(&wdata->refcount, cifs_uncached_writedata_release); } if (total_written > 0) @@ -2539,31 +2579,19 @@ cifs_writev(struct kiocb *iocb, const struct iovec *iov, struct cifsInodeInfo *cinode = CIFS_I(inode); struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server; ssize_t rc = -EACCES; + loff_t lock_pos = pos; - BUG_ON(iocb->ki_pos != pos); - + if (file->f_flags & O_APPEND) + lock_pos = i_size_read(inode); /* * We need to hold the sem to be sure nobody modifies lock list * with a brlock that prevents writing. */ down_read(&cinode->lock_sem); - if (!cifs_find_lock_conflict(cfile, pos, iov_length(iov, nr_segs), + if (!cifs_find_lock_conflict(cfile, lock_pos, iov_length(iov, nr_segs), server->vals->exclusive_lock_type, NULL, - CIFS_WRITE_OP)) { - mutex_lock(&inode->i_mutex); - rc = __generic_file_aio_write(iocb, iov, nr_segs, - &iocb->ki_pos); - mutex_unlock(&inode->i_mutex); - } - - if (rc > 0) { - ssize_t err; - - err = generic_write_sync(file, pos, rc); - if (err < 0 && rc > 0) - rc = err; - } - + CIFS_WRITE_OP)) + rc = generic_file_aio_write(iocb, iov, nr_segs, pos); up_read(&cinode->lock_sem); return rc; } @@ -3085,6 +3113,7 @@ cifs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) static struct vm_operations_struct cifs_file_vm_ops = { .fault = filemap_fault, + .map_pages = filemap_map_pages, .page_mkwrite = cifs_page_mkwrite, .remap_pages = generic_file_remap_pages, }; diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 49719b8228e5..aadc2b68678b 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -383,10 +383,10 @@ int cifs_get_inode_info_unix(struct inode **pinode, /* check for Minshall+French symlinks */ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) { - int tmprc = CIFSCheckMFSymlink(xid, tcon, cifs_sb, &fattr, - full_path); + int tmprc = check_mf_symlink(xid, tcon, cifs_sb, &fattr, + full_path); if (tmprc) - cifs_dbg(FYI, "CIFSCheckMFSymlink: %d\n", tmprc); + cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc); } if (*pinode == NULL) { @@ -404,18 +404,20 @@ int cifs_get_inode_info_unix(struct inode **pinode, } static int -cifs_sfu_type(struct cifs_fattr *fattr, const unsigned char *path, +cifs_sfu_type(struct cifs_fattr *fattr, const char *path, struct cifs_sb_info *cifs_sb, unsigned int xid) { int rc; int oplock = 0; - __u16 netfid; struct tcon_link *tlink; struct cifs_tcon *tcon; + struct cifs_fid fid; + struct cifs_open_parms oparms; struct cifs_io_parms io_parms; char buf[24]; unsigned int bytes_read; char *pbuf; + int buf_type = CIFS_NO_BUFFER; pbuf = buf; @@ -436,62 +438,69 @@ cifs_sfu_type(struct cifs_fattr *fattr, const unsigned char *path, return PTR_ERR(tlink); tcon = tlink_tcon(tlink); - rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, GENERIC_READ, - CREATE_NOT_DIR, &netfid, &oplock, NULL, - cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); - if (rc == 0) { - int buf_type = CIFS_NO_BUFFER; - /* Read header */ - io_parms.netfid = netfid; - io_parms.pid = current->tgid; - io_parms.tcon = tcon; - io_parms.offset = 0; - io_parms.length = 24; - rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf, - &buf_type); - if ((rc == 0) && (bytes_read >= 8)) { - if (memcmp("IntxBLK", pbuf, 8) == 0) { - cifs_dbg(FYI, "Block device\n"); - fattr->cf_mode |= S_IFBLK; - fattr->cf_dtype = DT_BLK; - if (bytes_read == 24) { - /* we have enough to decode dev num */ - __u64 mjr; /* major */ - __u64 mnr; /* minor */ - mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); - mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); - fattr->cf_rdev = MKDEV(mjr, mnr); - } - } else if (memcmp("IntxCHR", pbuf, 8) == 0) { - cifs_dbg(FYI, "Char device\n"); - fattr->cf_mode |= S_IFCHR; - fattr->cf_dtype = DT_CHR; - if (bytes_read == 24) { - /* we have enough to decode dev num */ - __u64 mjr; /* major */ - __u64 mnr; /* minor */ - mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); - mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); - fattr->cf_rdev = MKDEV(mjr, mnr); - } - } else if (memcmp("IntxLNK", pbuf, 7) == 0) { - cifs_dbg(FYI, "Symlink\n"); - fattr->cf_mode |= S_IFLNK; - fattr->cf_dtype = DT_LNK; - } else { - fattr->cf_mode |= S_IFREG; /* file? */ - fattr->cf_dtype = DT_REG; - rc = -EOPNOTSUPP; + oparms.tcon = tcon; + oparms.cifs_sb = cifs_sb; + oparms.desired_access = GENERIC_READ; + oparms.create_options = CREATE_NOT_DIR; + oparms.disposition = FILE_OPEN; + oparms.path = path; + oparms.fid = &fid; + oparms.reconnect = false; + + rc = CIFS_open(xid, &oparms, &oplock, NULL); + if (rc) { + cifs_put_tlink(tlink); + return rc; + } + + /* Read header */ + io_parms.netfid = fid.netfid; + io_parms.pid = current->tgid; + io_parms.tcon = tcon; + io_parms.offset = 0; + io_parms.length = 24; + + rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf, &buf_type); + if ((rc == 0) && (bytes_read >= 8)) { + if (memcmp("IntxBLK", pbuf, 8) == 0) { + cifs_dbg(FYI, "Block device\n"); + fattr->cf_mode |= S_IFBLK; + fattr->cf_dtype = DT_BLK; + if (bytes_read == 24) { + /* we have enough to decode dev num */ + __u64 mjr; /* major */ + __u64 mnr; /* minor */ + mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); + mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); + fattr->cf_rdev = MKDEV(mjr, mnr); } + } else if (memcmp("IntxCHR", pbuf, 8) == 0) { + cifs_dbg(FYI, "Char device\n"); + fattr->cf_mode |= S_IFCHR; + fattr->cf_dtype = DT_CHR; + if (bytes_read == 24) { + /* we have enough to decode dev num */ + __u64 mjr; /* major */ + __u64 mnr; /* minor */ + mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); + mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); + fattr->cf_rdev = MKDEV(mjr, mnr); + } + } else if (memcmp("IntxLNK", pbuf, 7) == 0) { + cifs_dbg(FYI, "Symlink\n"); + fattr->cf_mode |= S_IFLNK; + fattr->cf_dtype = DT_LNK; } else { - fattr->cf_mode |= S_IFREG; /* then it is a file */ + fattr->cf_mode |= S_IFREG; /* file? */ fattr->cf_dtype = DT_REG; - rc = -EOPNOTSUPP; /* or some unknown SFU type */ + rc = -EOPNOTSUPP; } - CIFSSMBClose(xid, tcon, netfid); + } else { + fattr->cf_mode |= S_IFREG; /* then it is a file */ + fattr->cf_dtype = DT_REG; + rc = -EOPNOTSUPP; /* or some unknown SFU type */ } + CIFSSMBClose(xid, tcon, fid.netfid); cifs_put_tlink(tlink); return rc; } @@ -518,10 +527,15 @@ static int cifs_sfu_mode(struct cifs_fattr *fattr, const unsigned char *path, return PTR_ERR(tlink); tcon = tlink_tcon(tlink); - rc = CIFSSMBQAllEAs(xid, tcon, path, "SETFILEBITS", - ea_value, 4 /* size of buf */, cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); + if (tcon->ses->server->ops->query_all_EAs == NULL) { + cifs_put_tlink(tlink); + return -EOPNOTSUPP; + } + + rc = tcon->ses->server->ops->query_all_EAs(xid, tcon, path, + "SETFILEBITS", ea_value, 4 /* size of buf */, + cifs_sb->local_nls, + cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); cifs_put_tlink(tlink); if (rc < 0) return (int)rc; @@ -663,7 +677,7 @@ cgfi_exit: int cifs_get_inode_info(struct inode **inode, const char *full_path, FILE_ALL_INFO *data, struct super_block *sb, int xid, - const __u16 *fid) + const struct cifs_fid *fid) { bool validinum = false; __u16 srchflgs; @@ -800,10 +814,10 @@ cifs_get_inode_info(struct inode **inode, const char *full_path, /* check for Minshall+French symlinks */ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) { - tmprc = CIFSCheckMFSymlink(xid, tcon, cifs_sb, &fattr, - full_path); + tmprc = check_mf_symlink(xid, tcon, cifs_sb, &fattr, + full_path); if (tmprc) - cifs_dbg(FYI, "CIFSCheckMFSymlink: %d\n", tmprc); + cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc); } if (!*inode) { @@ -1032,7 +1046,8 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry, { int oplock = 0; int rc; - __u16 netfid; + struct cifs_fid fid; + struct cifs_open_parms oparms; struct inode *inode = dentry->d_inode; struct cifsInodeInfo *cifsInode = CIFS_I(inode); struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); @@ -1055,10 +1070,16 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry, goto out; } - rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN, - DELETE|FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR, - &netfid, &oplock, NULL, cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); + oparms.tcon = tcon; + oparms.cifs_sb = cifs_sb; + oparms.desired_access = DELETE | FILE_WRITE_ATTRIBUTES; + oparms.create_options = CREATE_NOT_DIR; + oparms.disposition = FILE_OPEN; + oparms.path = full_path; + oparms.fid = &fid; + oparms.reconnect = false; + + rc = CIFS_open(xid, &oparms, &oplock, NULL); if (rc != 0) goto out; @@ -1079,7 +1100,7 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry, goto out_close; } info_buf->Attributes = cpu_to_le32(dosattr); - rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid, + rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, fid.netfid, current->tgid); /* although we would like to mark the file hidden if that fails we will still try to rename it */ @@ -1090,7 +1111,8 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry, } /* rename the file */ - rc = CIFSSMBRenameOpenFile(xid, tcon, netfid, NULL, cifs_sb->local_nls, + rc = CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, NULL, + cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc != 0) { @@ -1100,7 +1122,7 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry, /* try to set DELETE_ON_CLOSE */ if (!cifsInode->delete_pending) { - rc = CIFSSMBSetFileDisposition(xid, tcon, true, netfid, + rc = CIFSSMBSetFileDisposition(xid, tcon, true, fid.netfid, current->tgid); /* * some samba versions return -ENOENT when we try to set the @@ -1120,7 +1142,7 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry, } out_close: - CIFSSMBClose(xid, tcon, netfid); + CIFSSMBClose(xid, tcon, fid.netfid); out: kfree(info_buf); cifs_put_tlink(tlink); @@ -1132,13 +1154,13 @@ out: * them anyway. */ undo_rename: - CIFSSMBRenameOpenFile(xid, tcon, netfid, dentry->d_name.name, + CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, dentry->d_name.name, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); undo_setattr: if (dosattr != origattr) { info_buf->Attributes = cpu_to_le32(origattr); - if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid, + if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, fid.netfid, current->tgid)) cifsInode->cifsAttrs = origattr; } @@ -1549,7 +1571,8 @@ cifs_do_rename(const unsigned int xid, struct dentry *from_dentry, struct tcon_link *tlink; struct cifs_tcon *tcon; struct TCP_Server_Info *server; - __u16 srcfid; + struct cifs_fid fid; + struct cifs_open_parms oparms; int oplock, rc; tlink = cifs_sb_tlink(cifs_sb); @@ -1576,17 +1599,23 @@ cifs_do_rename(const unsigned int xid, struct dentry *from_dentry, if (to_dentry->d_parent != from_dentry->d_parent) goto do_rename_exit; + oparms.tcon = tcon; + oparms.cifs_sb = cifs_sb; /* open the file to be renamed -- we need DELETE perms */ - rc = CIFSSMBOpen(xid, tcon, from_path, FILE_OPEN, DELETE, - CREATE_NOT_DIR, &srcfid, &oplock, NULL, - cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); + oparms.desired_access = DELETE; + oparms.create_options = CREATE_NOT_DIR; + oparms.disposition = FILE_OPEN; + oparms.path = from_path; + oparms.fid = &fid; + oparms.reconnect = false; + + rc = CIFS_open(xid, &oparms, &oplock, NULL); if (rc == 0) { - rc = CIFSSMBRenameOpenFile(xid, tcon, srcfid, + rc = CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, (const char *) to_dentry->d_name.name, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); - CIFSSMBClose(xid, tcon, srcfid); + CIFSSMBClose(xid, tcon, fid.netfid); } do_rename_exit: cifs_put_tlink(tlink); diff --git a/fs/cifs/link.c b/fs/cifs/link.c index 92aee08483a5..264ece71bdb2 100644 --- a/fs/cifs/link.c +++ b/fs/cifs/link.c @@ -29,6 +29,10 @@ #include "cifs_debug.h" #include "cifs_fs_sb.h" +/* + * M-F Symlink Functions - Begin + */ + #define CIFS_MF_SYMLINK_LEN_OFFSET (4+1) #define CIFS_MF_SYMLINK_MD5_OFFSET (CIFS_MF_SYMLINK_LEN_OFFSET+(4+1)) #define CIFS_MF_SYMLINK_LINK_OFFSET (CIFS_MF_SYMLINK_MD5_OFFSET+(32+1)) @@ -91,10 +95,8 @@ symlink_hash_err: } static int -CIFSParseMFSymlink(const u8 *buf, - unsigned int buf_len, - unsigned int *_link_len, - char **_link_str) +parse_mf_symlink(const u8 *buf, unsigned int buf_len, unsigned int *_link_len, + char **_link_str) { int rc; unsigned int link_len; @@ -137,7 +139,7 @@ CIFSParseMFSymlink(const u8 *buf, } static int -CIFSFormatMFSymlink(u8 *buf, unsigned int buf_len, const char *link_str) +format_mf_symlink(u8 *buf, unsigned int buf_len, const char *link_str) { int rc; unsigned int link_len; @@ -180,190 +182,94 @@ CIFSFormatMFSymlink(u8 *buf, unsigned int buf_len, const char *link_str) return 0; } +bool +couldbe_mf_symlink(const struct cifs_fattr *fattr) +{ + if (!S_ISREG(fattr->cf_mode)) + /* it's not a symlink */ + return false; + + if (fattr->cf_eof != CIFS_MF_SYMLINK_FILE_SIZE) + /* it's not a symlink */ + return false; + + return true; +} + static int -CIFSCreateMFSymLink(const unsigned int xid, struct cifs_tcon *tcon, - const char *fromName, const char *toName, - struct cifs_sb_info *cifs_sb) +create_mf_symlink(const unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, const char *fromName, + const char *toName) { int rc; - int oplock = 0; - int remap; - int create_options = CREATE_NOT_DIR; - __u16 netfid = 0; u8 *buf; unsigned int bytes_written = 0; - struct cifs_io_parms io_parms; - struct nls_table *nls_codepage; - - nls_codepage = cifs_sb->local_nls; - remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL); if (!buf) return -ENOMEM; - rc = CIFSFormatMFSymlink(buf, CIFS_MF_SYMLINK_FILE_SIZE, toName); - if (rc != 0) { - kfree(buf); - return rc; - } - - if (backup_cred(cifs_sb)) - create_options |= CREATE_OPEN_BACKUP_INTENT; - - rc = CIFSSMBOpen(xid, tcon, fromName, FILE_CREATE, GENERIC_WRITE, - create_options, &netfid, &oplock, NULL, - nls_codepage, remap); - if (rc != 0) { - kfree(buf); - return rc; - } - - io_parms.netfid = netfid; - io_parms.pid = current->tgid; - io_parms.tcon = tcon; - io_parms.offset = 0; - io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE; + rc = format_mf_symlink(buf, CIFS_MF_SYMLINK_FILE_SIZE, toName); + if (rc) + goto out; - rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, buf, NULL, 0); - CIFSSMBClose(xid, tcon, netfid); - kfree(buf); - if (rc != 0) - return rc; + rc = tcon->ses->server->ops->create_mf_symlink(xid, tcon, cifs_sb, + fromName, buf, &bytes_written); + if (rc) + goto out; if (bytes_written != CIFS_MF_SYMLINK_FILE_SIZE) - return -EIO; - - return 0; + rc = -EIO; +out: + kfree(buf); + return rc; } static int -CIFSQueryMFSymLink(const unsigned int xid, struct cifs_tcon *tcon, - const unsigned char *searchName, char **symlinkinfo, - const struct nls_table *nls_codepage, int remap) +query_mf_symlink(const unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, const unsigned char *path, + char **symlinkinfo) { int rc; - int oplock = 0; - __u16 netfid = 0; - u8 *buf; - char *pbuf; - unsigned int bytes_read = 0; - int buf_type = CIFS_NO_BUFFER; + u8 *buf = NULL; unsigned int link_len = 0; - struct cifs_io_parms io_parms; - FILE_ALL_INFO file_info; - - rc = CIFSSMBOpen(xid, tcon, searchName, FILE_OPEN, GENERIC_READ, - CREATE_NOT_DIR, &netfid, &oplock, &file_info, - nls_codepage, remap); - if (rc != 0) - return rc; - - if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) { - CIFSSMBClose(xid, tcon, netfid); - /* it's not a symlink */ - return -EINVAL; - } + unsigned int bytes_read = 0; buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL); if (!buf) return -ENOMEM; - pbuf = buf; - io_parms.netfid = netfid; - io_parms.pid = current->tgid; - io_parms.tcon = tcon; - io_parms.offset = 0; - io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE; - - rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf, &buf_type); - CIFSSMBClose(xid, tcon, netfid); - if (rc != 0) { - kfree(buf); - return rc; - } - - rc = CIFSParseMFSymlink(buf, bytes_read, &link_len, symlinkinfo); - kfree(buf); - if (rc != 0) - return rc; - - return 0; -} - -bool -CIFSCouldBeMFSymlink(const struct cifs_fattr *fattr) -{ - if (!(fattr->cf_mode & S_IFREG)) - /* it's not a symlink */ - return false; - if (fattr->cf_eof != CIFS_MF_SYMLINK_FILE_SIZE) - /* it's not a symlink */ - return false; - - return true; -} - -int -open_query_close_cifs_symlink(const unsigned char *path, char *pbuf, - unsigned int *pbytes_read, struct cifs_sb_info *cifs_sb, - unsigned int xid) -{ - int rc; - int oplock = 0; - __u16 netfid = 0; - struct tcon_link *tlink; - struct cifs_tcon *ptcon; - struct cifs_io_parms io_parms; - int buf_type = CIFS_NO_BUFFER; - FILE_ALL_INFO file_info; - - tlink = cifs_sb_tlink(cifs_sb); - if (IS_ERR(tlink)) - return PTR_ERR(tlink); - ptcon = tlink_tcon(tlink); + if (tcon->ses->server->ops->query_mf_symlink) + rc = tcon->ses->server->ops->query_mf_symlink(xid, tcon, + cifs_sb, path, buf, &bytes_read); + else + rc = -ENOSYS; - rc = CIFSSMBOpen(xid, ptcon, path, FILE_OPEN, GENERIC_READ, - CREATE_NOT_DIR, &netfid, &oplock, &file_info, - cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); - if (rc != 0) { - cifs_put_tlink(tlink); - return rc; - } + if (rc) + goto out; - if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) { - CIFSSMBClose(xid, ptcon, netfid); - cifs_put_tlink(tlink); - /* it's not a symlink */ - return rc; + if (bytes_read == 0) { /* not a symlink */ + rc = -EINVAL; + goto out; } - io_parms.netfid = netfid; - io_parms.pid = current->tgid; - io_parms.tcon = ptcon; - io_parms.offset = 0; - io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE; - - rc = CIFSSMBRead(xid, &io_parms, pbytes_read, &pbuf, &buf_type); - CIFSSMBClose(xid, ptcon, netfid); - cifs_put_tlink(tlink); + rc = parse_mf_symlink(buf, bytes_read, &link_len, symlinkinfo); +out: + kfree(buf); return rc; } - int -CIFSCheckMFSymlink(unsigned int xid, struct cifs_tcon *tcon, - struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr, - const unsigned char *path) +check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr, + const unsigned char *path) { int rc; u8 *buf = NULL; unsigned int link_len = 0; unsigned int bytes_read = 0; - if (!CIFSCouldBeMFSymlink(fattr)) + if (!couldbe_mf_symlink(fattr)) /* it's not a symlink */ return 0; @@ -372,8 +278,8 @@ CIFSCheckMFSymlink(unsigned int xid, struct cifs_tcon *tcon, return -ENOMEM; if (tcon->ses->server->ops->query_mf_symlink) - rc = tcon->ses->server->ops->query_mf_symlink(path, buf, - &bytes_read, cifs_sb, xid); + rc = tcon->ses->server->ops->query_mf_symlink(xid, tcon, + cifs_sb, path, buf, &bytes_read); else rc = -ENOSYS; @@ -383,7 +289,7 @@ CIFSCheckMFSymlink(unsigned int xid, struct cifs_tcon *tcon, if (bytes_read == 0) /* not a symlink */ goto out; - rc = CIFSParseMFSymlink(buf, bytes_read, &link_len, NULL); + rc = parse_mf_symlink(buf, bytes_read, &link_len, NULL); if (rc == -EINVAL) { /* it's not a symlink */ rc = 0; @@ -403,6 +309,95 @@ out: return rc; } +/* + * SMB 1.0 Protocol specific functions + */ + +int +cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, const unsigned char *path, + char *pbuf, unsigned int *pbytes_read) +{ + int rc; + int oplock = 0; + struct cifs_fid fid; + struct cifs_open_parms oparms; + struct cifs_io_parms io_parms; + int buf_type = CIFS_NO_BUFFER; + FILE_ALL_INFO file_info; + + oparms.tcon = tcon; + oparms.cifs_sb = cifs_sb; + oparms.desired_access = GENERIC_READ; + oparms.create_options = CREATE_NOT_DIR; + oparms.disposition = FILE_OPEN; + oparms.path = path; + oparms.fid = &fid; + oparms.reconnect = false; + + rc = CIFS_open(xid, &oparms, &oplock, &file_info); + if (rc) + return rc; + + if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) + /* it's not a symlink */ + goto out; + + io_parms.netfid = fid.netfid; + io_parms.pid = current->tgid; + io_parms.tcon = tcon; + io_parms.offset = 0; + io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE; + + rc = CIFSSMBRead(xid, &io_parms, pbytes_read, &pbuf, &buf_type); +out: + CIFSSMBClose(xid, tcon, fid.netfid); + return rc; +} + +int +cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, const unsigned char *path, + char *pbuf, unsigned int *pbytes_written) +{ + int rc; + int oplock = 0; + struct cifs_fid fid; + struct cifs_open_parms oparms; + struct cifs_io_parms io_parms; + int create_options = CREATE_NOT_DIR; + + if (backup_cred(cifs_sb)) + create_options |= CREATE_OPEN_BACKUP_INTENT; + + oparms.tcon = tcon; + oparms.cifs_sb = cifs_sb; + oparms.desired_access = GENERIC_WRITE; + oparms.create_options = create_options; + oparms.disposition = FILE_OPEN; + oparms.path = path; + oparms.fid = &fid; + oparms.reconnect = false; + + rc = CIFS_open(xid, &oparms, &oplock, NULL); + if (rc) + return rc; + + io_parms.netfid = fid.netfid; + io_parms.pid = current->tgid; + io_parms.tcon = tcon; + io_parms.offset = 0; + io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE; + + rc = CIFSSMBWrite(xid, &io_parms, pbytes_written, pbuf, NULL, 0); + CIFSSMBClose(xid, tcon, fid.netfid); + return rc; +} + +/* + * M-F Symlink Functions - End + */ + int cifs_hardlink(struct dentry *old_file, struct inode *inode, struct dentry *direntry) @@ -438,8 +433,10 @@ cifs_hardlink(struct dentry *old_file, struct inode *inode, CIFS_MOUNT_MAP_SPECIAL_CHR); else { server = tcon->ses->server; - if (!server->ops->create_hardlink) - return -ENOSYS; + if (!server->ops->create_hardlink) { + rc = -ENOSYS; + goto cifs_hl_exit; + } rc = server->ops->create_hardlink(xid, tcon, from_name, to_name, cifs_sb); if ((rc == -EIO) || (rc == -EINVAL)) @@ -530,15 +527,10 @@ cifs_follow_link(struct dentry *direntry, struct nameidata *nd) * and fallback to UNIX Extensions Symlinks. */ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) - rc = CIFSQueryMFSymLink(xid, tcon, full_path, &target_path, - cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); + rc = query_mf_symlink(xid, tcon, cifs_sb, full_path, + &target_path); - if ((rc != 0) && cap_unix(tcon->ses)) - rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, &target_path, - cifs_sb->local_nls); - else if (rc != 0 && server->ops->query_symlink) + if (rc != 0 && server->ops->query_symlink) rc = server->ops->query_symlink(xid, tcon, full_path, &target_path, cifs_sb); @@ -587,8 +579,7 @@ cifs_symlink(struct inode *inode, struct dentry *direntry, const char *symname) /* BB what if DFS and this volume is on different share? BB */ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) - rc = CIFSCreateMFSymLink(xid, pTcon, full_path, symname, - cifs_sb); + rc = create_mf_symlink(xid, pTcon, cifs_sb, full_path, symname); else if (pTcon->unix_ext) rc = CIFSUnixCreateSymLink(xid, pTcon, full_path, symname, cifs_sb->local_nls); diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c index 5940ecabbe6a..b15862e0f68c 100644 --- a/fs/cifs/readdir.c +++ b/fs/cifs/readdir.c @@ -749,7 +749,7 @@ static int cifs_filldir(char *find_entry, struct file *file, } if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) && - CIFSCouldBeMFSymlink(&fattr)) + couldbe_mf_symlink(&fattr)) /* * trying to get the type and mode can be slow, * so just call those regular files for now, and mark diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c index 5f5ba0dc2ee1..526fb89f9230 100644 --- a/fs/cifs/smb1ops.c +++ b/fs/cifs/smb1ops.c @@ -560,17 +560,24 @@ cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, if (!rc && (le32_to_cpu(data->Attributes) & ATTR_REPARSE)) { int tmprc; int oplock = 0; - __u16 netfid; + struct cifs_fid fid; + struct cifs_open_parms oparms; + + oparms.tcon = tcon; + oparms.cifs_sb = cifs_sb; + oparms.desired_access = FILE_READ_ATTRIBUTES; + oparms.create_options = 0; + oparms.disposition = FILE_OPEN; + oparms.path = full_path; + oparms.fid = &fid; + oparms.reconnect = false; /* Need to check if this is a symbolic link or not */ - tmprc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN, - FILE_READ_ATTRIBUTES, 0, &netfid, &oplock, - NULL, cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); + tmprc = CIFS_open(xid, &oparms, &oplock, NULL); if (tmprc == -EOPNOTSUPP) *symlink = true; else - CIFSSMBClose(xid, tcon, netfid); + CIFSSMBClose(xid, tcon, fid.netfid); } return rc; @@ -705,12 +712,7 @@ cifs_open_file(const unsigned int xid, struct cifs_open_parms *oparms, oparms->cifs_sb->local_nls, oparms->cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); - return CIFSSMBOpen(xid, oparms->tcon, oparms->path, - oparms->disposition, oparms->desired_access, - oparms->create_options, &oparms->fid->netfid, oplock, - buf, oparms->cifs_sb->local_nls, - oparms->cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); + return CIFS_open(xid, oparms, oplock, buf); } static void @@ -761,8 +763,9 @@ smb_set_file_info(struct inode *inode, const char *full_path, { int oplock = 0; int rc; - __u16 netfid; __u32 netpid; + struct cifs_fid fid; + struct cifs_open_parms oparms; struct cifsFileInfo *open_file; struct cifsInodeInfo *cinode = CIFS_I(inode); struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); @@ -772,7 +775,7 @@ smb_set_file_info(struct inode *inode, const char *full_path, /* if the file is already open for write, just use that fileid */ open_file = find_writable_file(cinode, true); if (open_file) { - netfid = open_file->fid.netfid; + fid.netfid = open_file->fid.netfid; netpid = open_file->pid; tcon = tlink_tcon(open_file->tlink); goto set_via_filehandle; @@ -796,12 +799,17 @@ smb_set_file_info(struct inode *inode, const char *full_path, goto out; } - cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n"); - rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN, - SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR, - &netfid, &oplock, NULL, cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); + oparms.tcon = tcon; + oparms.cifs_sb = cifs_sb; + oparms.desired_access = SYNCHRONIZE | FILE_WRITE_ATTRIBUTES; + oparms.create_options = CREATE_NOT_DIR; + oparms.disposition = FILE_OPEN; + oparms.path = full_path; + oparms.fid = &fid; + oparms.reconnect = false; + cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n"); + rc = CIFS_open(xid, &oparms, &oplock, NULL); if (rc != 0) { if (rc == -EIO) rc = -EINVAL; @@ -811,12 +819,12 @@ smb_set_file_info(struct inode *inode, const char *full_path, netpid = current->tgid; set_via_filehandle: - rc = CIFSSMBSetFileInfo(xid, tcon, buf, netfid, netpid); + rc = CIFSSMBSetFileInfo(xid, tcon, buf, fid.netfid, netpid); if (!rc) cinode->cifsAttrs = le32_to_cpu(buf->Attributes); if (open_file == NULL) - CIFSSMBClose(xid, tcon, netfid); + CIFSSMBClose(xid, tcon, fid.netfid); else cifsFileInfo_put(open_file); out: @@ -908,33 +916,80 @@ cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset, } static int +cifs_unix_dfs_readlink(const unsigned int xid, struct cifs_tcon *tcon, + const unsigned char *searchName, char **symlinkinfo, + const struct nls_table *nls_codepage) +{ +#ifdef CONFIG_CIFS_DFS_UPCALL + int rc; + unsigned int num_referrals = 0; + struct dfs_info3_param *referrals = NULL; + + rc = get_dfs_path(xid, tcon->ses, searchName, nls_codepage, + &num_referrals, &referrals, 0); + + if (!rc && num_referrals > 0) { + *symlinkinfo = kstrndup(referrals->node_name, + strlen(referrals->node_name), + GFP_KERNEL); + if (!*symlinkinfo) + rc = -ENOMEM; + free_dfs_info_array(referrals, num_referrals); + } + return rc; +#else /* No DFS support */ + return -EREMOTE; +#endif +} + +static int cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon, const char *full_path, char **target_path, struct cifs_sb_info *cifs_sb) { int rc; int oplock = 0; - __u16 netfid; + struct cifs_fid fid; + struct cifs_open_parms oparms; cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); - rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN, - FILE_READ_ATTRIBUTES, OPEN_REPARSE_POINT, &netfid, - &oplock, NULL, cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); + /* Check for unix extensions */ + if (cap_unix(tcon->ses)) { + rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, target_path, + cifs_sb->local_nls); + if (rc == -EREMOTE) + rc = cifs_unix_dfs_readlink(xid, tcon, full_path, + target_path, + cifs_sb->local_nls); + + goto out; + } + + oparms.tcon = tcon; + oparms.cifs_sb = cifs_sb; + oparms.desired_access = FILE_READ_ATTRIBUTES; + oparms.create_options = OPEN_REPARSE_POINT; + oparms.disposition = FILE_OPEN; + oparms.path = full_path; + oparms.fid = &fid; + oparms.reconnect = false; + + rc = CIFS_open(xid, &oparms, &oplock, NULL); if (rc) - return rc; + goto out; - rc = CIFSSMBQuerySymLink(xid, tcon, netfid, target_path, + rc = CIFSSMBQuerySymLink(xid, tcon, fid.netfid, target_path, cifs_sb->local_nls); - if (rc) { - CIFSSMBClose(xid, tcon, netfid); - return rc; - } + if (rc) + goto out_close; convert_delimiter(*target_path, '/'); - CIFSSMBClose(xid, tcon, netfid); - cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path); +out_close: + CIFSSMBClose(xid, tcon, fid.netfid); +out: + if (!rc) + cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path); return rc; } @@ -1009,8 +1064,18 @@ struct smb_version_operations smb1_operations = { .mand_lock = cifs_mand_lock, .mand_unlock_range = cifs_unlock_range, .push_mand_locks = cifs_push_mandatory_locks, - .query_mf_symlink = open_query_close_cifs_symlink, + .query_mf_symlink = cifs_query_mf_symlink, + .create_mf_symlink = cifs_create_mf_symlink, .is_read_op = cifs_is_read_op, +#ifdef CONFIG_CIFS_XATTR + .query_all_EAs = CIFSSMBQAllEAs, + .set_EA = CIFSSMBSetEA, +#endif /* CIFS_XATTR */ +#ifdef CONFIG_CIFS_ACL + .get_acl = get_cifs_acl, + .get_acl_by_fid = get_cifs_acl_by_fid, + .set_acl = set_cifs_acl, +#endif /* CIFS_ACL */ }; struct smb_version_values smb1_values = { diff --git a/fs/cifs/smb2glob.h b/fs/cifs/smb2glob.h index c38350851b08..bc0bb9c34f72 100644 --- a/fs/cifs/smb2glob.h +++ b/fs/cifs/smb2glob.h @@ -57,4 +57,7 @@ #define SMB2_CMACAES_SIZE (16) #define SMB3_SIGNKEY_SIZE (16) +/* Maximum buffer size value we can send with 1 credit */ +#define SMB2_MAX_BUFFER_SIZE 65536 + #endif /* _SMB2_GLOB_H */ diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 757da3e54d3d..192f51a12cf1 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -182,11 +182,8 @@ smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info) /* start with specified wsize, or default */ wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE; wsize = min_t(unsigned int, wsize, server->max_write); - /* - * limit write size to 2 ** 16, because we don't support multicredit - * requests now. - */ - wsize = min_t(unsigned int, wsize, 2 << 15); + /* set it to the maximum buffer size value we can send with 1 credit */ + wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE); return wsize; } @@ -200,11 +197,8 @@ smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info) /* start with specified rsize, or default */ rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE; rsize = min_t(unsigned int, rsize, server->max_read); - /* - * limit write size to 2 ** 16, because we don't support multicredit - * requests now. - */ - rsize = min_t(unsigned int, rsize, 2 << 15); + /* set it to the maximum buffer size value we can send with 1 credit */ + rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE); return rsize; } diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 2013234b73ad..860344701067 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -413,7 +413,9 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses) /* SMB2 only has an extended negflavor */ server->negflavor = CIFS_NEGFLAVOR_EXTENDED; - server->maxBuf = le32_to_cpu(rsp->MaxTransactSize); + /* set it to the maximum buffer size value we can send with 1 credit */ + server->maxBuf = min_t(unsigned int, le32_to_cpu(rsp->MaxTransactSize), + SMB2_MAX_BUFFER_SIZE); server->max_read = le32_to_cpu(rsp->MaxReadSize); server->max_write = le32_to_cpu(rsp->MaxWriteSize); /* BB Do we need to validate the SecurityMode? */ @@ -1890,7 +1892,8 @@ smb2_writev_callback(struct mid_q_entry *mid) /* smb2_async_writev - send an async write, and set up mid to handle result */ int -smb2_async_writev(struct cifs_writedata *wdata) +smb2_async_writev(struct cifs_writedata *wdata, + void (*release)(struct kref *kref)) { int rc = -EACCES; struct smb2_write_req *req = NULL; @@ -1938,7 +1941,7 @@ smb2_async_writev(struct cifs_writedata *wdata) smb2_writev_callback, wdata, 0); if (rc) { - kref_put(&wdata->refcount, cifs_writedata_release); + kref_put(&wdata->refcount, release); cifs_stats_fail_inc(tcon, SMB2_WRITE_HE); } diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h index 93adc64666f3..0ce48db20a65 100644 --- a/fs/cifs/smb2proto.h +++ b/fs/cifs/smb2proto.h @@ -123,7 +123,8 @@ extern int SMB2_get_srv_num(const unsigned int xid, struct cifs_tcon *tcon, extern int smb2_async_readv(struct cifs_readdata *rdata); extern int SMB2_read(const unsigned int xid, struct cifs_io_parms *io_parms, unsigned int *nbytes, char **buf, int *buf_type); -extern int smb2_async_writev(struct cifs_writedata *wdata); +extern int smb2_async_writev(struct cifs_writedata *wdata, + void (*release)(struct kref *kref)); extern int SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms, unsigned int *nbytes, struct kvec *iov, int n_vec); extern int SMB2_echo(struct TCP_Server_Info *server); diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c index b37570952846..18cd5650a5fc 100644 --- a/fs/cifs/transport.c +++ b/fs/cifs/transport.c @@ -270,6 +270,26 @@ cifs_rqst_page_to_kvec(struct smb_rqst *rqst, unsigned int idx, iov->iov_len = rqst->rq_pagesz; } +static unsigned long +rqst_len(struct smb_rqst *rqst) +{ + unsigned int i; + struct kvec *iov = rqst->rq_iov; + unsigned long buflen = 0; + + /* total up iov array first */ + for (i = 0; i < rqst->rq_nvec; i++) + buflen += iov[i].iov_len; + + /* add in the page array if there is one */ + if (rqst->rq_npages) { + buflen += rqst->rq_pagesz * (rqst->rq_npages - 1); + buflen += rqst->rq_tailsz; + } + + return buflen; +} + static int smb_send_rqst(struct TCP_Server_Info *server, struct smb_rqst *rqst) { @@ -277,6 +297,7 @@ smb_send_rqst(struct TCP_Server_Info *server, struct smb_rqst *rqst) struct kvec *iov = rqst->rq_iov; int n_vec = rqst->rq_nvec; unsigned int smb_buf_length = get_rfc1002_length(iov[0].iov_base); + unsigned long send_length; unsigned int i; size_t total_len = 0, sent; struct socket *ssocket = server->ssocket; @@ -285,6 +306,14 @@ smb_send_rqst(struct TCP_Server_Info *server, struct smb_rqst *rqst) if (ssocket == NULL) return -ENOTSOCK; + /* sanity check send length */ + send_length = rqst_len(rqst); + if (send_length != smb_buf_length + 4) { + WARN(1, "Send length mismatch(send_length=%lu smb_buf_length=%u)\n", + send_length, smb_buf_length); + return -EIO; + } + cifs_dbg(FYI, "Sending smb: smb_len=%u\n", smb_buf_length); dump_smb(iov[0].iov_base, iov[0].iov_len); diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c index 09afda4cc58e..5ac836a86b18 100644 --- a/fs/cifs/xattr.c +++ b/fs/cifs/xattr.c @@ -82,9 +82,11 @@ int cifs_removexattr(struct dentry *direntry, const char *ea_name) goto remove_ea_exit; ea_name += XATTR_USER_PREFIX_LEN; /* skip past user. prefix */ - rc = CIFSSMBSetEA(xid, pTcon, full_path, ea_name, NULL, - (__u16)0, cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); + if (pTcon->ses->server->ops->set_EA) + rc = pTcon->ses->server->ops->set_EA(xid, pTcon, + full_path, ea_name, NULL, (__u16)0, + cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & + CIFS_MOUNT_MAP_SPECIAL_CHR); } remove_ea_exit: kfree(full_path); @@ -149,18 +151,22 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name, cifs_dbg(FYI, "attempt to set cifs inode metadata\n"); ea_name += XATTR_USER_PREFIX_LEN; /* skip past user. prefix */ - rc = CIFSSMBSetEA(xid, pTcon, full_path, ea_name, ea_value, - (__u16)value_size, cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); + if (pTcon->ses->server->ops->set_EA) + rc = pTcon->ses->server->ops->set_EA(xid, pTcon, + full_path, ea_name, ea_value, (__u16)value_size, + cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & + CIFS_MOUNT_MAP_SPECIAL_CHR); } else if (strncmp(ea_name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN) == 0) { if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) goto set_ea_exit; ea_name += XATTR_OS2_PREFIX_LEN; /* skip past os2. prefix */ - rc = CIFSSMBSetEA(xid, pTcon, full_path, ea_name, ea_value, - (__u16)value_size, cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); + if (pTcon->ses->server->ops->set_EA) + rc = pTcon->ses->server->ops->set_EA(xid, pTcon, + full_path, ea_name, ea_value, (__u16)value_size, + cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & + CIFS_MOUNT_MAP_SPECIAL_CHR); } else if (strncmp(ea_name, CIFS_XATTR_CIFS_ACL, strlen(CIFS_XATTR_CIFS_ACL)) == 0) { #ifdef CONFIG_CIFS_ACL @@ -170,8 +176,12 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name, rc = -ENOMEM; } else { memcpy(pacl, ea_value, value_size); - rc = set_cifs_acl(pacl, value_size, - direntry->d_inode, full_path, CIFS_ACL_DACL); + if (pTcon->ses->server->ops->set_acl) + rc = pTcon->ses->server->ops->set_acl(pacl, + value_size, direntry->d_inode, + full_path, CIFS_ACL_DACL); + else + rc = -EOPNOTSUPP; if (rc == 0) /* force revalidate of the inode */ CIFS_I(direntry->d_inode)->time = 0; kfree(pacl); @@ -272,17 +282,21 @@ ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name, /* revalidate/getattr then populate from inode */ } /* BB add else when above is implemented */ ea_name += XATTR_USER_PREFIX_LEN; /* skip past user. prefix */ - rc = CIFSSMBQAllEAs(xid, pTcon, full_path, ea_name, ea_value, - buf_size, cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); + if (pTcon->ses->server->ops->query_all_EAs) + rc = pTcon->ses->server->ops->query_all_EAs(xid, pTcon, + full_path, ea_name, ea_value, buf_size, + cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & + CIFS_MOUNT_MAP_SPECIAL_CHR); } else if (strncmp(ea_name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN) == 0) { if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) goto get_ea_exit; ea_name += XATTR_OS2_PREFIX_LEN; /* skip past os2. prefix */ - rc = CIFSSMBQAllEAs(xid, pTcon, full_path, ea_name, ea_value, - buf_size, cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); + if (pTcon->ses->server->ops->query_all_EAs) + rc = pTcon->ses->server->ops->query_all_EAs(xid, pTcon, + full_path, ea_name, ea_value, buf_size, + cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & + CIFS_MOUNT_MAP_SPECIAL_CHR); } else if (strncmp(ea_name, POSIX_ACL_XATTR_ACCESS, strlen(POSIX_ACL_XATTR_ACCESS)) == 0) { #ifdef CONFIG_CIFS_POSIX @@ -313,8 +327,11 @@ ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name, u32 acllen; struct cifs_ntsd *pacl; - pacl = get_cifs_acl(cifs_sb, direntry->d_inode, - full_path, &acllen); + if (pTcon->ses->server->ops->get_acl == NULL) + goto get_ea_exit; /* rc already EOPNOTSUPP */ + + pacl = pTcon->ses->server->ops->get_acl(cifs_sb, + direntry->d_inode, full_path, &acllen); if (IS_ERR(pacl)) { rc = PTR_ERR(pacl); cifs_dbg(VFS, "%s: error %zd getting sec desc\n", @@ -400,11 +417,12 @@ ssize_t cifs_listxattr(struct dentry *direntry, char *data, size_t buf_size) /* if proc/fs/cifs/streamstoxattr is set then search server for EAs or streams to returns as xattrs */ - rc = CIFSSMBQAllEAs(xid, pTcon, full_path, NULL, data, - buf_size, cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); + if (pTcon->ses->server->ops->query_all_EAs) + rc = pTcon->ses->server->ops->query_all_EAs(xid, pTcon, + full_path, NULL, data, buf_size, + cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & + CIFS_MOUNT_MAP_SPECIAL_CHR); list_ea_exit: kfree(full_path); free_xid(xid); diff --git a/fs/coda/coda_int.h b/fs/coda/coda_int.h index b7143cf783ac..381c993b1427 100644 --- a/fs/coda/coda_int.h +++ b/fs/coda/coda_int.h @@ -10,7 +10,7 @@ extern int coda_hard; extern int coda_fake_statfs; void coda_destroy_inodecache(void); -int coda_init_inodecache(void); +int __init coda_init_inodecache(void); int coda_fsync(struct file *coda_file, loff_t start, loff_t end, int datasync); void coda_sysctl_init(void); void coda_sysctl_clean(void); diff --git a/fs/coda/inode.c b/fs/coda/inode.c index 506de34a4ef3..d9c7751f10ac 100644 --- a/fs/coda/inode.c +++ b/fs/coda/inode.c @@ -73,7 +73,7 @@ static void init_once(void *foo) inode_init_once(&ei->vfs_inode); } -int coda_init_inodecache(void) +int __init coda_init_inodecache(void) { coda_inode_cachep = kmem_cache_create("coda_inode_cache", sizeof(struct coda_inode_info), @@ -96,6 +96,7 @@ void coda_destroy_inodecache(void) static int coda_remount(struct super_block *sb, int *flags, char *data) { + sync_filesystem(sb); *flags |= MS_NOATIME; return 0; } @@ -250,7 +251,7 @@ static void coda_put_super(struct super_block *sb) static void coda_evict_inode(struct inode *inode) { - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); coda_cache_clear_inode(inode); } diff --git a/fs/compat.c b/fs/compat.c index 6af20de2c1a3..ca926ad0430c 100644 --- a/fs/compat.c +++ b/fs/compat.c @@ -72,8 +72,8 @@ int compat_printk(const char *fmt, ...) * Not all architectures have sys_utime, so implement this in terms * of sys_utimes. */ -asmlinkage long compat_sys_utime(const char __user *filename, - struct compat_utimbuf __user *t) +COMPAT_SYSCALL_DEFINE2(utime, const char __user *, filename, + struct compat_utimbuf __user *, t) { struct timespec tv[2]; @@ -87,13 +87,13 @@ asmlinkage long compat_sys_utime(const char __user *filename, return do_utimes(AT_FDCWD, filename, t ? tv : NULL, 0); } -asmlinkage long compat_sys_utimensat(unsigned int dfd, const char __user *filename, struct compat_timespec __user *t, int flags) +COMPAT_SYSCALL_DEFINE4(utimensat, unsigned int, dfd, const char __user *, filename, struct compat_timespec __user *, t, int, flags) { struct timespec tv[2]; if (t) { - if (get_compat_timespec(&tv[0], &t[0]) || - get_compat_timespec(&tv[1], &t[1])) + if (compat_get_timespec(&tv[0], &t[0]) || + compat_get_timespec(&tv[1], &t[1])) return -EFAULT; if (tv[0].tv_nsec == UTIME_OMIT && tv[1].tv_nsec == UTIME_OMIT) @@ -102,7 +102,7 @@ asmlinkage long compat_sys_utimensat(unsigned int dfd, const char __user *filena return do_utimes(dfd, filename, t ? tv : NULL, flags); } -asmlinkage long compat_sys_futimesat(unsigned int dfd, const char __user *filename, struct compat_timeval __user *t) +COMPAT_SYSCALL_DEFINE3(futimesat, unsigned int, dfd, const char __user *, filename, struct compat_timeval __user *, t) { struct timespec tv[2]; @@ -121,7 +121,7 @@ asmlinkage long compat_sys_futimesat(unsigned int dfd, const char __user *filena return do_utimes(dfd, filename, t ? tv : NULL, 0); } -asmlinkage long compat_sys_utimes(const char __user *filename, struct compat_timeval __user *t) +COMPAT_SYSCALL_DEFINE2(utimes, const char __user *, filename, struct compat_timeval __user *, t) { return compat_sys_futimesat(AT_FDCWD, filename, t); } @@ -159,8 +159,8 @@ static int cp_compat_stat(struct kstat *stat, struct compat_stat __user *ubuf) return copy_to_user(ubuf, &tmp, sizeof(tmp)) ? -EFAULT : 0; } -asmlinkage long compat_sys_newstat(const char __user * filename, - struct compat_stat __user *statbuf) +COMPAT_SYSCALL_DEFINE2(newstat, const char __user *, filename, + struct compat_stat __user *, statbuf) { struct kstat stat; int error; @@ -171,8 +171,8 @@ asmlinkage long compat_sys_newstat(const char __user * filename, return cp_compat_stat(&stat, statbuf); } -asmlinkage long compat_sys_newlstat(const char __user * filename, - struct compat_stat __user *statbuf) +COMPAT_SYSCALL_DEFINE2(newlstat, const char __user *, filename, + struct compat_stat __user *, statbuf) { struct kstat stat; int error; @@ -184,9 +184,9 @@ asmlinkage long compat_sys_newlstat(const char __user * filename, } #ifndef __ARCH_WANT_STAT64 -asmlinkage long compat_sys_newfstatat(unsigned int dfd, - const char __user *filename, - struct compat_stat __user *statbuf, int flag) +COMPAT_SYSCALL_DEFINE4(newfstatat, unsigned int, dfd, + const char __user *, filename, + struct compat_stat __user *, statbuf, int, flag) { struct kstat stat; int error; @@ -198,8 +198,8 @@ asmlinkage long compat_sys_newfstatat(unsigned int dfd, } #endif -asmlinkage long compat_sys_newfstat(unsigned int fd, - struct compat_stat __user * statbuf) +COMPAT_SYSCALL_DEFINE2(newfstat, unsigned int, fd, + struct compat_stat __user *, statbuf) { struct kstat stat; int error = vfs_fstat(fd, &stat); @@ -247,7 +247,7 @@ static int put_compat_statfs(struct compat_statfs __user *ubuf, struct kstatfs * * The following statfs calls are copies of code from fs/statfs.c and * should be checked against those from time to time */ -asmlinkage long compat_sys_statfs(const char __user *pathname, struct compat_statfs __user *buf) +COMPAT_SYSCALL_DEFINE2(statfs, const char __user *, pathname, struct compat_statfs __user *, buf) { struct kstatfs tmp; int error = user_statfs(pathname, &tmp); @@ -256,7 +256,7 @@ asmlinkage long compat_sys_statfs(const char __user *pathname, struct compat_sta return error; } -asmlinkage long compat_sys_fstatfs(unsigned int fd, struct compat_statfs __user *buf) +COMPAT_SYSCALL_DEFINE2(fstatfs, unsigned int, fd, struct compat_statfs __user *, buf) { struct kstatfs tmp; int error = fd_statfs(fd, &tmp); @@ -298,7 +298,7 @@ static int put_compat_statfs64(struct compat_statfs64 __user *ubuf, struct kstat return 0; } -asmlinkage long compat_sys_statfs64(const char __user *pathname, compat_size_t sz, struct compat_statfs64 __user *buf) +COMPAT_SYSCALL_DEFINE3(statfs64, const char __user *, pathname, compat_size_t, sz, struct compat_statfs64 __user *, buf) { struct kstatfs tmp; int error; @@ -312,7 +312,7 @@ asmlinkage long compat_sys_statfs64(const char __user *pathname, compat_size_t s return error; } -asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, struct compat_statfs64 __user *buf) +COMPAT_SYSCALL_DEFINE3(fstatfs64, unsigned int, fd, compat_size_t, sz, struct compat_statfs64 __user *, buf) { struct kstatfs tmp; int error; @@ -331,7 +331,7 @@ asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, struct c * Given how simple this syscall is that apporach is more maintainable * than the various conversion hacks. */ -asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u) +COMPAT_SYSCALL_DEFINE2(ustat, unsigned, dev, struct compat_ustat __user *, u) { struct compat_ustat tmp; struct kstatfs sbuf; @@ -399,12 +399,28 @@ static int put_compat_flock64(struct flock *kfl, struct compat_flock64 __user *u } #endif -asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd, - unsigned long arg) +static unsigned int +convert_fcntl_cmd(unsigned int cmd) +{ + switch (cmd) { + case F_GETLK64: + return F_GETLK; + case F_SETLK64: + return F_SETLK; + case F_SETLKW64: + return F_SETLKW; + } + + return cmd; +} + +COMPAT_SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned int, cmd, + compat_ulong_t, arg) { mm_segment_t old_fs; struct flock f; long ret; + unsigned int conv_cmd; switch (cmd) { case F_GETLK: @@ -441,16 +457,18 @@ asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd, case F_GETLK64: case F_SETLK64: case F_SETLKW64: + case F_GETLKP: + case F_SETLKP: + case F_SETLKPW: ret = get_compat_flock64(&f, compat_ptr(arg)); if (ret != 0) break; old_fs = get_fs(); set_fs(KERNEL_DS); - ret = sys_fcntl(fd, (cmd == F_GETLK64) ? F_GETLK : - ((cmd == F_SETLK64) ? F_SETLK : F_SETLKW), - (unsigned long)&f); + conv_cmd = convert_fcntl_cmd(cmd); + ret = sys_fcntl(fd, conv_cmd, (unsigned long)&f); set_fs(old_fs); - if (cmd == F_GETLK64 && ret == 0) { + if ((conv_cmd == F_GETLK || conv_cmd == F_GETLKP) && ret == 0) { /* need to return lock information - see above for commentary */ if (f.l_start > COMPAT_LOFF_T_MAX) ret = -EOVERFLOW; @@ -468,16 +486,22 @@ asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd, return ret; } -asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd, - unsigned long arg) +COMPAT_SYSCALL_DEFINE3(fcntl, unsigned int, fd, unsigned int, cmd, + compat_ulong_t, arg) { - if ((cmd == F_GETLK64) || (cmd == F_SETLK64) || (cmd == F_SETLKW64)) + switch (cmd) { + case F_GETLK64: + case F_SETLK64: + case F_SETLKW64: + case F_GETLKP: + case F_SETLKP: + case F_SETLKPW: return -EINVAL; + } return compat_sys_fcntl64(fd, cmd, arg); } -asmlinkage long -compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p) +COMPAT_SYSCALL_DEFINE2(io_setup, unsigned, nr_reqs, u32 __user *, ctx32p) { long ret; aio_context_t ctx64; @@ -496,32 +520,24 @@ compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p) return ret; } -asmlinkage long -compat_sys_io_getevents(aio_context_t ctx_id, - unsigned long min_nr, - unsigned long nr, - struct io_event __user *events, - struct compat_timespec __user *timeout) +COMPAT_SYSCALL_DEFINE5(io_getevents, compat_aio_context_t, ctx_id, + compat_long_t, min_nr, + compat_long_t, nr, + struct io_event __user *, events, + struct compat_timespec __user *, timeout) { - long ret; struct timespec t; struct timespec __user *ut = NULL; - ret = -EFAULT; - if (unlikely(!access_ok(VERIFY_WRITE, events, - nr * sizeof(struct io_event)))) - goto out; if (timeout) { - if (get_compat_timespec(&t, timeout)) - goto out; + if (compat_get_timespec(&t, timeout)) + return -EFAULT; ut = compat_alloc_user_space(sizeof(*ut)); if (copy_to_user(ut, &t, sizeof(t)) ) - goto out; + return -EFAULT; } - ret = sys_io_getevents(ctx_id, min_nr, nr, events, ut); -out: - return ret; + return sys_io_getevents(ctx_id, min_nr, nr, events, ut); } /* A write operation does a read from user space and vice versa */ @@ -617,8 +633,8 @@ copy_iocb(long nr, u32 __user *ptr32, struct iocb __user * __user *ptr64) #define MAX_AIO_SUBMITS (PAGE_SIZE/sizeof(struct iocb *)) -asmlinkage long -compat_sys_io_submit(aio_context_t ctx_id, int nr, u32 __user *iocb) +COMPAT_SYSCALL_DEFINE3(io_submit, compat_aio_context_t, ctx_id, + int, nr, u32 __user *, iocb) { struct iocb __user * __user *iocb64; long ret; @@ -770,10 +786,10 @@ static int do_nfs4_super_data_conv(void *raw_data) #define NCPFS_NAME "ncpfs" #define NFS4_NAME "nfs4" -asmlinkage long compat_sys_mount(const char __user * dev_name, - const char __user * dir_name, - const char __user * type, unsigned long flags, - const void __user * data) +COMPAT_SYSCALL_DEFINE5(mount, const char __user *, dev_name, + const char __user *, dir_name, + const char __user *, type, compat_ulong_t, flags, + const void __user *, data) { char *kernel_type; unsigned long data_page; @@ -869,8 +885,8 @@ efault: return -EFAULT; } -asmlinkage long compat_sys_old_readdir(unsigned int fd, - struct compat_old_linux_dirent __user *dirent, unsigned int count) +COMPAT_SYSCALL_DEFINE3(old_readdir, unsigned int, fd, + struct compat_old_linux_dirent __user *, dirent, unsigned int, count) { int error; struct fd f = fdget(fd); @@ -948,8 +964,8 @@ efault: return -EFAULT; } -asmlinkage long compat_sys_getdents(unsigned int fd, - struct compat_linux_dirent __user *dirent, unsigned int count) +COMPAT_SYSCALL_DEFINE3(getdents, unsigned int, fd, + struct compat_linux_dirent __user *, dirent, unsigned int, count) { struct fd f; struct compat_linux_dirent __user * lastdirent; @@ -981,7 +997,7 @@ asmlinkage long compat_sys_getdents(unsigned int fd, return error; } -#ifndef __ARCH_OMIT_COMPAT_SYS_GETDENTS64 +#ifdef __ARCH_WANT_COMPAT_SYS_GETDENTS64 struct compat_getdents_callback64 { struct dir_context ctx; @@ -1033,8 +1049,8 @@ efault: return -EFAULT; } -asmlinkage long compat_sys_getdents64(unsigned int fd, - struct linux_dirent64 __user * dirent, unsigned int count) +COMPAT_SYSCALL_DEFINE3(getdents64, unsigned int, fd, + struct linux_dirent64 __user *, dirent, unsigned int, count) { struct fd f; struct linux_dirent64 __user * lastdirent; @@ -1066,7 +1082,7 @@ asmlinkage long compat_sys_getdents64(unsigned int fd, fdput(f); return error; } -#endif /* ! __ARCH_OMIT_COMPAT_SYS_GETDENTS64 */ +#endif /* __ARCH_WANT_COMPAT_SYS_GETDENTS64 */ /* * Exactly like fs/open.c:sys_open(), except that it doesn't set the @@ -1287,9 +1303,9 @@ out_nofds: return ret; } -asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, - compat_ulong_t __user *outp, compat_ulong_t __user *exp, - struct compat_timeval __user *tvp) +COMPAT_SYSCALL_DEFINE5(select, int, n, compat_ulong_t __user *, inp, + compat_ulong_t __user *, outp, compat_ulong_t __user *, exp, + struct compat_timeval __user *, tvp) { struct timespec end_time, *to = NULL; struct compat_timeval tv; @@ -1320,7 +1336,7 @@ struct compat_sel_arg_struct { compat_uptr_t tvp; }; -asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg) +COMPAT_SYSCALL_DEFINE1(old_select, struct compat_sel_arg_struct __user *, arg) { struct compat_sel_arg_struct a; @@ -1381,9 +1397,9 @@ static long do_compat_pselect(int n, compat_ulong_t __user *inp, return ret; } -asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp, - compat_ulong_t __user *outp, compat_ulong_t __user *exp, - struct compat_timespec __user *tsp, void __user *sig) +COMPAT_SYSCALL_DEFINE6(pselect6, int, n, compat_ulong_t __user *, inp, + compat_ulong_t __user *, outp, compat_ulong_t __user *, exp, + struct compat_timespec __user *, tsp, void __user *, sig) { compat_size_t sigsetsize = 0; compat_uptr_t up = 0; @@ -1400,9 +1416,9 @@ asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp, sigsetsize); } -asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds, - unsigned int nfds, struct compat_timespec __user *tsp, - const compat_sigset_t __user *sigmask, compat_size_t sigsetsize) +COMPAT_SYSCALL_DEFINE5(ppoll, struct pollfd __user *, ufds, + unsigned int, nfds, struct compat_timespec __user *, tsp, + const compat_sigset_t __user *, sigmask, compat_size_t, sigsetsize) { compat_sigset_t ss32; sigset_t ksigmask, sigsaved; diff --git a/fs/compat_binfmt_elf.c b/fs/compat_binfmt_elf.c index a81147e2e4ef..4d24d17bcfc1 100644 --- a/fs/compat_binfmt_elf.c +++ b/fs/compat_binfmt_elf.c @@ -88,6 +88,11 @@ static void cputime_to_compat_timeval(const cputime_t cputime, #define ELF_HWCAP COMPAT_ELF_HWCAP #endif +#ifdef COMPAT_ELF_HWCAP2 +#undef ELF_HWCAP2 +#define ELF_HWCAP2 COMPAT_ELF_HWCAP2 +#endif + #ifdef COMPAT_ARCH_DLINFO #undef ARCH_DLINFO #define ARCH_DLINFO COMPAT_ARCH_DLINFO diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index dc52e13d58e0..e82289047272 100644 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@ -680,7 +680,8 @@ static int do_i2c_rdwr_ioctl(unsigned int fd, unsigned int cmd, struct i2c_msg __user *tmsgs; struct i2c_msg32 __user *umsgs; compat_caddr_t datap; - int nmsgs, i; + u32 nmsgs; + int i; if (get_user(nmsgs, &udata->nmsgs)) return -EFAULT; @@ -1537,9 +1538,10 @@ static int compat_ioctl_check_table(unsigned int xcmd) return ioctl_pointer[i] == xcmd; } -asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, - unsigned long arg) +COMPAT_SYSCALL_DEFINE3(ioctl, unsigned int, fd, unsigned int, cmd, + compat_ulong_t, arg32) { + unsigned long arg = arg32; struct fd f = fdget(fd); int error = -EBADF; if (!f.file) diff --git a/fs/coredump.c b/fs/coredump.c index bc3fbcd32558..e3ad709a4232 100644 --- a/fs/coredump.c +++ b/fs/coredump.c @@ -40,7 +40,6 @@ #include <trace/events/task.h> #include "internal.h" -#include "coredump.h" #include <trace/events/sched.h> diff --git a/fs/coredump.h b/fs/coredump.h deleted file mode 100644 index e39ff072110d..000000000000 --- a/fs/coredump.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef _FS_COREDUMP_H -#define _FS_COREDUMP_H - -extern int __get_dumpable(unsigned long mm_flags); - -#endif diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c index e501ac3a49ff..ddcfe590b8a8 100644 --- a/fs/cramfs/inode.c +++ b/fs/cramfs/inode.c @@ -17,14 +17,30 @@ #include <linux/init.h> #include <linux/string.h> #include <linux/blkdev.h> -#include <linux/cramfs_fs.h> #include <linux/slab.h> -#include <linux/cramfs_fs_sb.h> #include <linux/vfs.h> #include <linux/mutex.h> - +#include <uapi/linux/cramfs_fs.h> #include <asm/uaccess.h> +#include "internal.h" + +/* + * cramfs super-block data in memory + */ +struct cramfs_sb_info { + unsigned long magic; + unsigned long size; + unsigned long blocks; + unsigned long files; + unsigned long flags; +}; + +static inline struct cramfs_sb_info *CRAMFS_SB(struct super_block *sb) +{ + return sb->s_fs_info; +} + static const struct super_operations cramfs_ops; static const struct inode_operations cramfs_dir_inode_operations; static const struct file_operations cramfs_directory_operations; @@ -179,8 +195,7 @@ static void *cramfs_read(struct super_block *sb, unsigned int offset, unsigned i struct page *page = NULL; if (blocknr + i < devsize) { - page = read_mapping_page_async(mapping, blocknr + i, - NULL); + page = read_mapping_page(mapping, blocknr + i, NULL); /* synchronous error? */ if (IS_ERR(page)) page = NULL; @@ -219,14 +234,16 @@ static void *cramfs_read(struct super_block *sb, unsigned int offset, unsigned i return read_buffers[buffer] + offset; } -static void cramfs_put_super(struct super_block *sb) +static void cramfs_kill_sb(struct super_block *sb) { - kfree(sb->s_fs_info); - sb->s_fs_info = NULL; + struct cramfs_sb_info *sbi = CRAMFS_SB(sb); + kill_block_super(sb); + kfree(sbi); } static int cramfs_remount(struct super_block *sb, int *flags, char *data) { + sync_filesystem(sb); *flags |= MS_RDONLY; return 0; } @@ -261,7 +278,7 @@ static int cramfs_fill_super(struct super_block *sb, void *data, int silent) if (super.magic == CRAMFS_MAGIC_WEND) { if (!silent) printk(KERN_ERR "cramfs: wrong endianness\n"); - goto out; + return -EINVAL; } /* check at 512 byte offset */ @@ -273,20 +290,20 @@ static int cramfs_fill_super(struct super_block *sb, void *data, int silent) printk(KERN_ERR "cramfs: wrong endianness\n"); else if (!silent) printk(KERN_ERR "cramfs: wrong magic\n"); - goto out; + return -EINVAL; } } /* get feature flags first */ if (super.flags & ~CRAMFS_SUPPORTED_FLAGS) { printk(KERN_ERR "cramfs: unsupported filesystem features\n"); - goto out; + return -EINVAL; } /* Check that the root inode is in a sane state */ if (!S_ISDIR(super.root.mode)) { printk(KERN_ERR "cramfs: root is not a directory\n"); - goto out; + return -EINVAL; } /* correct strange, hard-coded permissions of mkcramfs */ super.root.mode |= (S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH); @@ -310,22 +327,18 @@ static int cramfs_fill_super(struct super_block *sb, void *data, int silent) (root_offset != 512 + sizeof(struct cramfs_super)))) { printk(KERN_ERR "cramfs: bad root offset %lu\n", root_offset); - goto out; + return -EINVAL; } /* Set it all up.. */ sb->s_op = &cramfs_ops; root = get_cramfs_inode(sb, &super.root, 0); if (IS_ERR(root)) - goto out; + return PTR_ERR(root); sb->s_root = d_make_root(root); if (!sb->s_root) - goto out; + return -ENOMEM; return 0; -out: - kfree(sbi); - sb->s_fs_info = NULL; - return -EINVAL; } static int cramfs_statfs(struct dentry *dentry, struct kstatfs *buf) @@ -550,7 +563,6 @@ static const struct inode_operations cramfs_dir_inode_operations = { }; static const struct super_operations cramfs_ops = { - .put_super = cramfs_put_super, .remount_fs = cramfs_remount, .statfs = cramfs_statfs, }; @@ -565,7 +577,7 @@ static struct file_system_type cramfs_fs_type = { .owner = THIS_MODULE, .name = "cramfs", .mount = cramfs_mount, - .kill_sb = kill_block_super, + .kill_sb = cramfs_kill_sb, .fs_flags = FS_REQUIRES_DEV, }; MODULE_ALIAS_FS("cramfs"); diff --git a/fs/cramfs/internal.h b/fs/cramfs/internal.h new file mode 100644 index 000000000000..349d71272157 --- /dev/null +++ b/fs/cramfs/internal.h @@ -0,0 +1,4 @@ +/* Uncompression interfaces to the underlying zlib */ +int cramfs_uncompress_block(void *dst, int dstlen, void *src, int srclen); +int cramfs_uncompress_init(void); +void cramfs_uncompress_exit(void); diff --git a/fs/cramfs/uncompress.c b/fs/cramfs/uncompress.c index 023329800d2e..1760c1b84d97 100644 --- a/fs/cramfs/uncompress.c +++ b/fs/cramfs/uncompress.c @@ -19,7 +19,7 @@ #include <linux/errno.h> #include <linux/vmalloc.h> #include <linux/zlib.h> -#include <linux/cramfs_fs.h> +#include "internal.h" static z_stream stream; static int initialized; diff --git a/fs/dcache.c b/fs/dcache.c index cb4a10690868..40707d88a945 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -2483,12 +2483,14 @@ static void switch_names(struct dentry *dentry, struct dentry *target) dentry->d_name.name = dentry->d_iname; } else { /* - * Both are internal. Just copy target to dentry + * Both are internal. */ - memcpy(dentry->d_iname, target->d_name.name, - target->d_name.len + 1); - dentry->d_name.len = target->d_name.len; - return; + unsigned int i; + BUILD_BUG_ON(!IS_ALIGNED(DNAME_INLINE_LEN, sizeof(long))); + for (i = 0; i < DNAME_INLINE_LEN / sizeof(long); i++) { + swap(((long *) &dentry->d_iname)[i], + ((long *) &target->d_iname)[i]); + } } } swap(dentry->d_name.len, target->d_name.len); @@ -2545,13 +2547,15 @@ static void dentry_unlock_parents_for_move(struct dentry *dentry, * __d_move - move a dentry * @dentry: entry to move * @target: new dentry + * @exchange: exchange the two dentries * * Update the dcache to reflect the move of a file name. Negative * dcache entries should not be moved in this way. Caller must hold * rename_lock, the i_mutex of the source and target directories, * and the sb->s_vfs_rename_mutex if they differ. See lock_rename(). */ -static void __d_move(struct dentry * dentry, struct dentry * target) +static void __d_move(struct dentry *dentry, struct dentry *target, + bool exchange) { if (!dentry->d_inode) printk(KERN_WARNING "VFS: moving negative dcache entry\n"); @@ -2573,8 +2577,15 @@ static void __d_move(struct dentry * dentry, struct dentry * target) __d_drop(dentry); __d_rehash(dentry, d_hash(target->d_parent, target->d_name.hash)); - /* Unhash the target: dput() will then get rid of it */ + /* + * Unhash the target (d_delete() is not usable here). If exchanging + * the two dentries, then rehash onto the other's hash queue. + */ __d_drop(target); + if (exchange) { + __d_rehash(target, + d_hash(dentry->d_parent, dentry->d_name.hash)); + } list_del(&dentry->d_u.d_child); list_del(&target->d_u.d_child); @@ -2601,6 +2612,8 @@ static void __d_move(struct dentry * dentry, struct dentry * target) write_seqcount_end(&dentry->d_seq); dentry_unlock_parents_for_move(dentry, target); + if (exchange) + fsnotify_d_move(target); spin_unlock(&target->d_lock); fsnotify_d_move(dentry); spin_unlock(&dentry->d_lock); @@ -2618,11 +2631,30 @@ static void __d_move(struct dentry * dentry, struct dentry * target) void d_move(struct dentry *dentry, struct dentry *target) { write_seqlock(&rename_lock); - __d_move(dentry, target); + __d_move(dentry, target, false); write_sequnlock(&rename_lock); } EXPORT_SYMBOL(d_move); +/* + * d_exchange - exchange two dentries + * @dentry1: first dentry + * @dentry2: second dentry + */ +void d_exchange(struct dentry *dentry1, struct dentry *dentry2) +{ + write_seqlock(&rename_lock); + + WARN_ON(!dentry1->d_inode); + WARN_ON(!dentry2->d_inode); + WARN_ON(IS_ROOT(dentry1)); + WARN_ON(IS_ROOT(dentry2)); + + __d_move(dentry1, dentry2, true); + + write_sequnlock(&rename_lock); +} + /** * d_ancestor - search for an ancestor * @p1: ancestor dentry @@ -2670,7 +2702,7 @@ static struct dentry *__d_unalias(struct inode *inode, m2 = &alias->d_parent->d_inode->i_mutex; out_unalias: if (likely(!d_mountpoint(alias))) { - __d_move(alias, dentry); + __d_move(alias, dentry, false); ret = alias; } out_err: @@ -2833,9 +2865,9 @@ static int prepend_name(char **buffer, int *buflen, struct qstr *name) u32 dlen = ACCESS_ONCE(name->len); char *p; - if (*buflen < dlen + 1) - return -ENAMETOOLONG; *buflen -= dlen + 1; + if (*buflen < 0) + return -ENAMETOOLONG; p = *buffer -= dlen + 1; *p++ = '/'; while (dlen--) { @@ -3112,30 +3144,33 @@ char *simple_dname(struct dentry *dentry, char *buffer, int buflen) end = ERR_PTR(-ENAMETOOLONG); return end; } +EXPORT_SYMBOL(simple_dname); /* * Write full pathname from the root of the filesystem into the buffer. */ -static char *__dentry_path(struct dentry *dentry, char *buf, int buflen) +static char *__dentry_path(struct dentry *d, char *buf, int buflen) { + struct dentry *dentry; char *end, *retval; int len, seq = 0; int error = 0; + if (buflen < 2) + goto Elong; + rcu_read_lock(); restart: + dentry = d; end = buf + buflen; len = buflen; prepend(&end, &len, "\0", 1); - if (buflen < 1) - goto Elong; /* Get '/' right */ retval = end-1; *retval = '/'; read_seqbegin_or_lock(&rename_lock, &seq); while (!IS_ROOT(dentry)) { struct dentry *parent = dentry->d_parent; - int error; prefetch(parent); error = prepend_name(&end, &len, &dentry->d_name); diff --git a/fs/dcookies.c b/fs/dcookies.c index ab5954b50267..ac44a69fbea9 100644 --- a/fs/dcookies.c +++ b/fs/dcookies.c @@ -204,7 +204,7 @@ out: } #ifdef CONFIG_COMPAT -COMPAT_SYSCALL_DEFINE4(lookup_dcookie, u32, w0, u32, w1, char __user *, buf, size_t, len) +COMPAT_SYSCALL_DEFINE4(lookup_dcookie, u32, w0, u32, w1, char __user *, buf, compat_size_t, len) { #ifdef __BIG_ENDIAN return sys_lookup_dcookie(((u64)w0 << 32) | w1, buf, len); diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c index 9c0444cccbe1..8c41b52da358 100644 --- a/fs/debugfs/inode.c +++ b/fs/debugfs/inode.c @@ -218,6 +218,7 @@ static int debugfs_remount(struct super_block *sb, int *flags, char *data) int err; struct debugfs_fs_info *fsi = sb->s_fs_info; + sync_filesystem(sb); err = debugfs_parse_options(data, &fsi->mount_opts); if (err) goto fail; @@ -358,7 +359,7 @@ exit: * @name: a pointer to a string containing the name of the file to create. * @mode: the permission that the file should have. * @parent: a pointer to the parent dentry for this file. This should be a - * directory dentry if set. If this paramater is NULL, then the + * directory dentry if set. If this parameter is NULL, then the * file will be created in the root of the debugfs filesystem. * @data: a pointer to something that the caller will want to get to later * on. The inode.i_private pointer will point to this value on @@ -400,7 +401,7 @@ EXPORT_SYMBOL_GPL(debugfs_create_file); * @name: a pointer to a string containing the name of the directory to * create. * @parent: a pointer to the parent dentry for this file. This should be a - * directory dentry if set. If this paramater is NULL, then the + * directory dentry if set. If this parameter is NULL, then the * directory will be created in the root of the debugfs filesystem. * * This function creates a directory in debugfs with the given name. @@ -425,7 +426,7 @@ EXPORT_SYMBOL_GPL(debugfs_create_dir); * @name: a pointer to a string containing the name of the symbolic link to * create. * @parent: a pointer to the parent dentry for this symbolic link. This - * should be a directory dentry if set. If this paramater is NULL, + * should be a directory dentry if set. If this parameter is NULL, * then the symbolic link will be created in the root of the debugfs * filesystem. * @target: a pointer to a string containing the path to the target of the diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c index a726b9f29cb7..c71038079b47 100644 --- a/fs/devpts/inode.c +++ b/fs/devpts/inode.c @@ -313,6 +313,7 @@ static int devpts_remount(struct super_block *sb, int *flags, char *data) struct pts_fs_info *fsi = DEVPTS_SB(sb); struct pts_mount_opts *opts = &fsi->mount_opts; + sync_filesystem(sb); err = parse_mount_options(data, PARSE_REMOUNT, opts); /* diff --git a/fs/direct-io.c b/fs/direct-io.c index 0e04142d5962..31ba0935e32e 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -375,7 +375,7 @@ dio_bio_alloc(struct dio *dio, struct dio_submit *sdio, bio = bio_alloc(GFP_KERNEL, nr_vecs); bio->bi_bdev = bdev; - bio->bi_sector = first_sector; + bio->bi_iter.bi_sector = first_sector; if (dio->is_async) bio->bi_end_io = dio_bio_end_aio; else @@ -664,7 +664,6 @@ static inline int dio_new_bio(struct dio *dio, struct dio_submit *sdio, goto out; sector = start_sector << (sdio->blkbits - 9); nr_pages = min(sdio->pages_in_io, bio_get_nr_vecs(map_bh->b_bdev)); - nr_pages = min(nr_pages, BIO_MAX_PAGES); BUG_ON(nr_pages <= 0); dio_bio_alloc(dio, sdio, map_bh->b_bdev, sector, nr_pages); sdio->boundary = 0; @@ -719,7 +718,7 @@ static inline int dio_send_cur_page(struct dio *dio, struct dio_submit *sdio, if (sdio->bio) { loff_t cur_offset = sdio->cur_page_fs_offset; loff_t bio_next_offset = sdio->logical_offset_in_bio + - sdio->bio->bi_size; + sdio->bio->bi_iter.bi_size; /* * See whether this new request is contiguous with the old. @@ -1194,13 +1193,19 @@ do_blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode, } /* - * For file extending writes updating i_size before data - * writeouts complete can expose uninitialized blocks. So - * even for AIO, we need to wait for i/o to complete before - * returning in this case. + * For file extending writes updating i_size before data writeouts + * complete can expose uninitialized blocks in dumb filesystems. + * In that case we need to wait for I/O completion even if asked + * for an asynchronous write. */ - dio->is_async = !is_sync_kiocb(iocb) && !((rw & WRITE) && - (end > i_size_read(inode))); + if (is_sync_kiocb(iocb)) + dio->is_async = false; + else if (!(dio->flags & DIO_ASYNC_EXTEND) && + (rw & WRITE) && end > i_size_read(inode)) + dio->is_async = false; + else + dio->is_async = true; + dio->inode = inode; dio->rw = rw; diff --git a/fs/dlm/ast.c b/fs/dlm/ast.c index 0e90f0c91b93..dcea1e37a1b7 100644 --- a/fs/dlm/ast.c +++ b/fs/dlm/ast.c @@ -14,6 +14,7 @@ #include "dlm_internal.h" #include "lock.h" #include "user.h" +#include "ast.h" static uint64_t dlm_cb_seq; static DEFINE_SPINLOCK(dlm_cb_seq_spin); @@ -308,6 +309,6 @@ void dlm_callback_resume(struct dlm_ls *ls) mutex_unlock(&ls->ls_cb_mutex); if (count) - log_debug(ls, "dlm_callback_resume %d", count); + log_rinfo(ls, "dlm_callback_resume %d", count); } diff --git a/fs/dlm/dir.c b/fs/dlm/dir.c index 278a75cda446..d975851a7e1e 100644 --- a/fs/dlm/dir.c +++ b/fs/dlm/dir.c @@ -68,7 +68,7 @@ int dlm_recover_directory(struct dlm_ls *ls) uint16_t namelen; unsigned int count = 0, count_match = 0, count_bad = 0, count_add = 0; - log_debug(ls, "dlm_recover_directory"); + log_rinfo(ls, "dlm_recover_directory"); if (dlm_no_directory(ls)) goto out_status; @@ -189,7 +189,7 @@ int dlm_recover_directory(struct dlm_ls *ls) error = 0; dlm_set_recover_status(ls, DLM_RS_DIR); - log_debug(ls, "dlm_recover_directory %u in %u new", + log_rinfo(ls, "dlm_recover_directory %u in %u new", count, count_add); out_free: kfree(last_name); diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h index e7665c31f7b1..5eff6ea3e27f 100644 --- a/fs/dlm/dlm_internal.h +++ b/fs/dlm/dlm_internal.h @@ -65,6 +65,8 @@ struct dlm_mhandle; printk(KERN_ERR "dlm: "fmt"\n" , ##args) #define log_error(ls, fmt, args...) \ printk(KERN_ERR "dlm: %s: " fmt "\n", (ls)->ls_name , ##args) +#define log_rinfo(ls, fmt, args...) \ + printk(KERN_INFO "dlm: %s: " fmt "\n", (ls)->ls_name , ##args); #define log_debug(ls, fmt, args...) \ do { \ diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c index e223a911a834..83f3d5520307 100644 --- a/fs/dlm/lock.c +++ b/fs/dlm/lock.c @@ -687,6 +687,7 @@ static int find_rsb_dir(struct dlm_ls *ls, char *name, int len, log_error(ls, "find_rsb new from_other %d dir %d our %d %s", from_nodeid, dir_nodeid, our_nodeid, r->res_name); dlm_free_rsb(r); + r = NULL; error = -ENOTBLK; goto out_unlock; } @@ -5462,7 +5463,7 @@ void dlm_recover_purge(struct dlm_ls *ls) up_write(&ls->ls_root_sem); if (lkb_count) - log_debug(ls, "dlm_recover_purge %u locks for %u nodes", + log_rinfo(ls, "dlm_recover_purge %u locks for %u nodes", lkb_count, nodes_count); } @@ -5536,7 +5537,7 @@ void dlm_recover_grant(struct dlm_ls *ls) } if (lkb_count) - log_debug(ls, "dlm_recover_grant %u locks on %u resources", + log_rinfo(ls, "dlm_recover_grant %u locks on %u resources", lkb_count, rsb_count); } @@ -5695,7 +5696,7 @@ int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc) put_rsb(r); out: if (error && error != -EEXIST) - log_debug(ls, "dlm_recover_master_copy remote %d %x error %d", + log_rinfo(ls, "dlm_recover_master_copy remote %d %x error %d", from_nodeid, remid, error); rl->rl_result = cpu_to_le32(error); return error; diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c index d5abafd56a6d..04d6398c1f1c 100644 --- a/fs/dlm/lockspace.c +++ b/fs/dlm/lockspace.c @@ -190,7 +190,7 @@ static int do_uevent(struct dlm_ls *ls, int in) else kobject_uevent(&ls->ls_kobj, KOBJ_OFFLINE); - log_debug(ls, "%s the lockspace group...", in ? "joining" : "leaving"); + log_rinfo(ls, "%s the lockspace group...", in ? "joining" : "leaving"); /* dlm_controld will see the uevent, do the necessary group management and then write to sysfs to wake us */ @@ -198,7 +198,7 @@ static int do_uevent(struct dlm_ls *ls, int in) error = wait_event_interruptible(ls->ls_uevent_wait, test_and_clear_bit(LSFL_UEVENT_WAIT, &ls->ls_flags)); - log_debug(ls, "group event done %d %d", error, ls->ls_uevent_result); + log_rinfo(ls, "group event done %d %d", error, ls->ls_uevent_result); if (error) goto out; @@ -640,7 +640,7 @@ static int new_lockspace(const char *name, const char *cluster, dlm_create_debug_file(ls); - log_debug(ls, "join complete"); + log_rinfo(ls, "join complete"); *lockspace = ls; return 0; @@ -835,7 +835,7 @@ static int release_lockspace(struct dlm_ls *ls, int force) dlm_clear_members(ls); dlm_clear_members_gone(ls); kfree(ls->ls_node_array); - log_debug(ls, "release_lockspace final free"); + log_rinfo(ls, "release_lockspace final free"); kobject_put(&ls->ls_kobj); /* The ls structure will be freed when the kobject is done with */ diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c index d90909ec6aa6..3190ca973dd6 100644 --- a/fs/dlm/lowcomms.c +++ b/fs/dlm/lowcomms.c @@ -649,6 +649,7 @@ static void process_sctp_notification(struct connection *con, struct msghdr *msg, char *buf) { union sctp_notification *sn = (union sctp_notification *)buf; + struct linger linger; switch (sn->sn_header.sn_type) { case SCTP_SEND_FAILED: @@ -713,11 +714,11 @@ static void process_sctp_notification(struct connection *con, return; /* Peel off a new sock */ - sctp_lock_sock(con->sock->sk); + lock_sock(con->sock->sk); ret = sctp_do_peeloff(con->sock->sk, sn->sn_assoc_change.sac_assoc_id, &new_con->sock); - sctp_release_sock(con->sock->sk); + release_sock(con->sock->sk); if (ret < 0) { log_print("Can't peel off a socket for " "connection %d to node %d: err=%d", @@ -727,6 +728,13 @@ static void process_sctp_notification(struct connection *con, } add_sock(new_con->sock, new_con); + linger.l_onoff = 1; + linger.l_linger = 0; + ret = kernel_setsockopt(new_con->sock, SOL_SOCKET, SO_LINGER, + (char *)&linger, sizeof(linger)); + if (ret < 0) + log_print("set socket option SO_LINGER failed"); + log_print("connecting to %d sctp association %d", nodeid, (int)sn->sn_assoc_change.sac_assoc_id); diff --git a/fs/dlm/member.c b/fs/dlm/member.c index 476557b54921..9c47f1c14a8b 100644 --- a/fs/dlm/member.c +++ b/fs/dlm/member.c @@ -60,18 +60,15 @@ void dlm_slots_copy_out(struct dlm_ls *ls, struct dlm_rcom *rc) #define SLOT_DEBUG_LINE 128 -static void log_debug_slots(struct dlm_ls *ls, uint32_t gen, int num_slots, - struct rcom_slot *ro0, struct dlm_slot *array, - int array_size) +static void log_slots(struct dlm_ls *ls, uint32_t gen, int num_slots, + struct rcom_slot *ro0, struct dlm_slot *array, + int array_size) { char line[SLOT_DEBUG_LINE]; int len = SLOT_DEBUG_LINE - 1; int pos = 0; int ret, i; - if (!dlm_config.ci_log_debug) - return; - memset(line, 0, sizeof(line)); if (array) { @@ -95,7 +92,7 @@ static void log_debug_slots(struct dlm_ls *ls, uint32_t gen, int num_slots, } } - log_debug(ls, "generation %u slots %d%s", gen, num_slots, line); + log_rinfo(ls, "generation %u slots %d%s", gen, num_slots, line); } int dlm_slots_copy_in(struct dlm_ls *ls) @@ -129,7 +126,7 @@ int dlm_slots_copy_in(struct dlm_ls *ls) ro->ro_slot = le16_to_cpu(ro->ro_slot); } - log_debug_slots(ls, gen, num_slots, ro0, NULL, 0); + log_slots(ls, gen, num_slots, ro0, NULL, 0); list_for_each_entry(memb, &ls->ls_nodes, list) { for (i = 0, ro = ro0; i < num_slots; i++, ro++) { @@ -274,7 +271,7 @@ int dlm_slots_assign(struct dlm_ls *ls, int *num_slots, int *slots_size, gen++; - log_debug_slots(ls, gen, num, NULL, array, array_size); + log_slots(ls, gen, num, NULL, array, array_size); max_slots = (dlm_config.ci_buffer_size - sizeof(struct dlm_rcom) - sizeof(struct rcom_config)) / sizeof(struct rcom_slot); @@ -447,7 +444,7 @@ static int ping_members(struct dlm_ls *ls) break; } if (error) - log_debug(ls, "ping_members aborted %d last nodeid %d", + log_rinfo(ls, "ping_members aborted %d last nodeid %d", error, ls->ls_recover_nodeid); return error; } @@ -539,7 +536,7 @@ int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv, int *neg_out) count as a negative change so the "neg" recovery steps will happen */ list_for_each_entry(memb, &ls->ls_nodes_gone, list) { - log_debug(ls, "prev removed member %d", memb->nodeid); + log_rinfo(ls, "prev removed member %d", memb->nodeid); neg++; } @@ -551,10 +548,10 @@ int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv, int *neg_out) continue; if (!node) { - log_debug(ls, "remove member %d", memb->nodeid); + log_rinfo(ls, "remove member %d", memb->nodeid); } else { /* removed and re-added */ - log_debug(ls, "remove member %d comm_seq %u %u", + log_rinfo(ls, "remove member %d comm_seq %u %u", memb->nodeid, memb->comm_seq, node->comm_seq); } @@ -571,7 +568,7 @@ int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv, int *neg_out) if (dlm_is_member(ls, node->nodeid)) continue; dlm_add_member(ls, node); - log_debug(ls, "add member %d", node->nodeid); + log_rinfo(ls, "add member %d", node->nodeid); } list_for_each_entry(memb, &ls->ls_nodes, list) { @@ -591,7 +588,7 @@ int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv, int *neg_out) complete(&ls->ls_members_done); } - log_debug(ls, "dlm_recover_members %d nodes", ls->ls_num_nodes); + log_rinfo(ls, "dlm_recover_members %d nodes", ls->ls_num_nodes); return error; } diff --git a/fs/dlm/recover.c b/fs/dlm/recover.c index a6bc63f6e31b..eaea789bf97d 100644 --- a/fs/dlm/recover.c +++ b/fs/dlm/recover.c @@ -526,7 +526,7 @@ int dlm_recover_masters(struct dlm_ls *ls) int nodir = dlm_no_directory(ls); int error; - log_debug(ls, "dlm_recover_masters"); + log_rinfo(ls, "dlm_recover_masters"); down_read(&ls->ls_root_sem); list_for_each_entry(r, &ls->ls_root_list, res_root_list) { @@ -552,7 +552,7 @@ int dlm_recover_masters(struct dlm_ls *ls) } up_read(&ls->ls_root_sem); - log_debug(ls, "dlm_recover_masters %u of %u", count, total); + log_rinfo(ls, "dlm_recover_masters %u of %u", count, total); error = dlm_wait_function(ls, &recover_idr_empty); out: @@ -685,7 +685,7 @@ int dlm_recover_locks(struct dlm_ls *ls) } up_read(&ls->ls_root_sem); - log_debug(ls, "dlm_recover_locks %d out", count); + log_rinfo(ls, "dlm_recover_locks %d out", count); error = dlm_wait_function(ls, &recover_list_empty); out: @@ -883,7 +883,7 @@ void dlm_recover_rsbs(struct dlm_ls *ls) up_read(&ls->ls_root_sem); if (count) - log_debug(ls, "dlm_recover_rsbs %d done", count); + log_rinfo(ls, "dlm_recover_rsbs %d done", count); } /* Create a single list of all root rsb's to be used during recovery */ @@ -950,6 +950,6 @@ void dlm_clear_toss(struct dlm_ls *ls) } if (count) - log_debug(ls, "dlm_clear_toss %u done", count); + log_rinfo(ls, "dlm_clear_toss %u done", count); } diff --git a/fs/dlm/recoverd.c b/fs/dlm/recoverd.c index 32f9f8926ec3..6859b4bf971e 100644 --- a/fs/dlm/recoverd.c +++ b/fs/dlm/recoverd.c @@ -55,7 +55,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) unsigned long start; int error, neg = 0; - log_debug(ls, "dlm_recover %llu", (unsigned long long)rv->seq); + log_rinfo(ls, "dlm_recover %llu", (unsigned long long)rv->seq); mutex_lock(&ls->ls_recoverd_active); @@ -76,7 +76,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) error = dlm_recover_members(ls, rv, &neg); if (error) { - log_debug(ls, "dlm_recover_members error %d", error); + log_rinfo(ls, "dlm_recover_members error %d", error); goto fail; } @@ -90,7 +90,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) error = dlm_recover_members_wait(ls); if (error) { - log_debug(ls, "dlm_recover_members_wait error %d", error); + log_rinfo(ls, "dlm_recover_members_wait error %d", error); goto fail; } @@ -103,7 +103,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) error = dlm_recover_directory(ls); if (error) { - log_debug(ls, "dlm_recover_directory error %d", error); + log_rinfo(ls, "dlm_recover_directory error %d", error); goto fail; } @@ -111,11 +111,11 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) error = dlm_recover_directory_wait(ls); if (error) { - log_debug(ls, "dlm_recover_directory_wait error %d", error); + log_rinfo(ls, "dlm_recover_directory_wait error %d", error); goto fail; } - log_debug(ls, "dlm_recover_directory %u out %u messages", + log_rinfo(ls, "dlm_recover_directory %u out %u messages", ls->ls_recover_dir_sent_res, ls->ls_recover_dir_sent_msg); /* @@ -144,7 +144,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) error = dlm_recover_masters(ls); if (error) { - log_debug(ls, "dlm_recover_masters error %d", error); + log_rinfo(ls, "dlm_recover_masters error %d", error); goto fail; } @@ -154,7 +154,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) error = dlm_recover_locks(ls); if (error) { - log_debug(ls, "dlm_recover_locks error %d", error); + log_rinfo(ls, "dlm_recover_locks error %d", error); goto fail; } @@ -162,11 +162,11 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) error = dlm_recover_locks_wait(ls); if (error) { - log_debug(ls, "dlm_recover_locks_wait error %d", error); + log_rinfo(ls, "dlm_recover_locks_wait error %d", error); goto fail; } - log_debug(ls, "dlm_recover_locks %u in", + log_rinfo(ls, "dlm_recover_locks %u in", ls->ls_recover_locks_in); /* @@ -186,7 +186,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) error = dlm_recover_locks_wait(ls); if (error) { - log_debug(ls, "dlm_recover_locks_wait error %d", error); + log_rinfo(ls, "dlm_recover_locks_wait error %d", error); goto fail; } } @@ -205,7 +205,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) error = dlm_recover_done_wait(ls); if (error) { - log_debug(ls, "dlm_recover_done_wait error %d", error); + log_rinfo(ls, "dlm_recover_done_wait error %d", error); goto fail; } @@ -217,25 +217,25 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) error = enable_locking(ls, rv->seq); if (error) { - log_debug(ls, "enable_locking error %d", error); + log_rinfo(ls, "enable_locking error %d", error); goto fail; } error = dlm_process_requestqueue(ls); if (error) { - log_debug(ls, "dlm_process_requestqueue error %d", error); + log_rinfo(ls, "dlm_process_requestqueue error %d", error); goto fail; } error = dlm_recover_waiters_post(ls); if (error) { - log_debug(ls, "dlm_recover_waiters_post error %d", error); + log_rinfo(ls, "dlm_recover_waiters_post error %d", error); goto fail; } dlm_recover_grant(ls); - log_debug(ls, "dlm_recover %llu generation %u done: %u ms", + log_rinfo(ls, "dlm_recover %llu generation %u done: %u ms", (unsigned long long)rv->seq, ls->ls_generation, jiffies_to_msecs(jiffies - start)); mutex_unlock(&ls->ls_recoverd_active); @@ -245,7 +245,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) fail: dlm_release_root_list(ls); - log_debug(ls, "dlm_recover %llu error %d", + log_rinfo(ls, "dlm_recover %llu error %d", (unsigned long long)rv->seq, error); mutex_unlock(&ls->ls_recoverd_active); return error; diff --git a/fs/drop_caches.c b/fs/drop_caches.c index 9fd702f5bfb2..9280202e488c 100644 --- a/fs/drop_caches.c +++ b/fs/drop_caches.c @@ -59,10 +59,22 @@ int drop_caches_sysctl_handler(ctl_table *table, int write, if (ret) return ret; if (write) { - if (sysctl_drop_caches & 1) + static int stfu; + + if (sysctl_drop_caches & 1) { iterate_supers(drop_pagecache_sb, NULL); - if (sysctl_drop_caches & 2) + count_vm_event(DROP_PAGECACHE); + } + if (sysctl_drop_caches & 2) { drop_slab(); + count_vm_event(DROP_SLAB); + } + if (!stfu) { + pr_info("%s (%d): drop_caches: %d\n", + current->comm, task_pid_nr(current), + sysctl_drop_caches); + } + stfu |= sysctl_drop_caches & 4; } return 0; } diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c index c36c44824471..d4a9431ec73c 100644 --- a/fs/ecryptfs/inode.c +++ b/fs/ecryptfs/inode.c @@ -641,7 +641,7 @@ ecryptfs_rename(struct inode *old_dir, struct dentry *old_dentry, } rc = vfs_rename(lower_old_dir_dentry->d_inode, lower_old_dentry, lower_new_dir_dentry->d_inode, lower_new_dentry, - NULL); + NULL, 0); if (rc) goto out_lock; if (target_inode) @@ -659,19 +659,17 @@ out_lock: return rc; } -static int ecryptfs_readlink_lower(struct dentry *dentry, char **buf, - size_t *bufsiz) +static char *ecryptfs_readlink_lower(struct dentry *dentry, size_t *bufsiz) { struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry); char *lower_buf; + char *buf; mm_segment_t old_fs; int rc; lower_buf = kmalloc(PATH_MAX, GFP_KERNEL); - if (!lower_buf) { - rc = -ENOMEM; - goto out; - } + if (!lower_buf) + return ERR_PTR(-ENOMEM); old_fs = get_fs(); set_fs(get_ds()); rc = lower_dentry->d_inode->i_op->readlink(lower_dentry, @@ -680,21 +678,18 @@ static int ecryptfs_readlink_lower(struct dentry *dentry, char **buf, set_fs(old_fs); if (rc < 0) goto out; - rc = ecryptfs_decode_and_decrypt_filename(buf, bufsiz, dentry->d_sb, + rc = ecryptfs_decode_and_decrypt_filename(&buf, bufsiz, dentry->d_sb, lower_buf, rc); out: kfree(lower_buf); - return rc; + return rc ? ERR_PTR(rc) : buf; } static void *ecryptfs_follow_link(struct dentry *dentry, struct nameidata *nd) { - char *buf; - size_t len = PATH_MAX; - int rc; - - rc = ecryptfs_readlink_lower(dentry, &buf, &len); - if (rc) + size_t len; + char *buf = ecryptfs_readlink_lower(dentry, &len); + if (IS_ERR(buf)) goto out; fsstack_copy_attr_atime(dentry->d_inode, ecryptfs_dentry_to_lower(dentry)->d_inode); @@ -1003,10 +998,12 @@ static int ecryptfs_getattr_link(struct vfsmount *mnt, struct dentry *dentry, char *target; size_t targetsiz; - rc = ecryptfs_readlink_lower(dentry, &target, &targetsiz); - if (!rc) { + target = ecryptfs_readlink_lower(dentry, &targetsiz); + if (!IS_ERR(target)) { kfree(target); stat->size = targetsiz; + } else { + rc = PTR_ERR(target); } } return rc; diff --git a/fs/ecryptfs/super.c b/fs/ecryptfs/super.c index e879cf8ff0b1..afa1b81c3418 100644 --- a/fs/ecryptfs/super.c +++ b/fs/ecryptfs/super.c @@ -132,7 +132,7 @@ static int ecryptfs_statfs(struct dentry *dentry, struct kstatfs *buf) */ static void ecryptfs_evict_inode(struct inode *inode) { - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); iput(ecryptfs_inode_to_lower(inode)); } diff --git a/fs/efivarfs/file.c b/fs/efivarfs/file.c index 8dd524f32284..cdb2971192a5 100644 --- a/fs/efivarfs/file.c +++ b/fs/efivarfs/file.c @@ -21,7 +21,7 @@ static ssize_t efivarfs_file_write(struct file *file, u32 attributes; struct inode *inode = file->f_mapping->host; unsigned long datasize = count - sizeof(attributes); - ssize_t bytes = 0; + ssize_t bytes; bool set = false; if (count < sizeof(attributes)) @@ -33,14 +33,9 @@ static ssize_t efivarfs_file_write(struct file *file, if (attributes & ~(EFI_VARIABLE_MASK)) return -EINVAL; - data = kmalloc(datasize, GFP_KERNEL); - if (!data) - return -ENOMEM; - - if (copy_from_user(data, userbuf + sizeof(attributes), datasize)) { - bytes = -EFAULT; - goto out; - } + data = memdup_user(userbuf + sizeof(attributes), datasize); + if (IS_ERR(data)) + return PTR_ERR(data); bytes = efivar_entry_set_get_size(var, attributes, &datasize, data, &set); diff --git a/fs/efs/super.c b/fs/efs/super.c index c6f57a74a559..3befcc9f5d63 100644 --- a/fs/efs/super.c +++ b/fs/efs/super.c @@ -26,11 +26,18 @@ static struct dentry *efs_mount(struct file_system_type *fs_type, return mount_bdev(fs_type, flags, dev_name, data, efs_fill_super); } +static void efs_kill_sb(struct super_block *s) +{ + struct efs_sb_info *sbi = SUPER_INFO(s); + kill_block_super(s); + kfree(sbi); +} + static struct file_system_type efs_fs_type = { .owner = THIS_MODULE, .name = "efs", .mount = efs_mount, - .kill_sb = kill_block_super, + .kill_sb = efs_kill_sb, .fs_flags = FS_REQUIRES_DEV, }; MODULE_ALIAS_FS("efs"); @@ -84,7 +91,7 @@ static void init_once(void *foo) inode_init_once(&ei->vfs_inode); } -static int init_inodecache(void) +static int __init init_inodecache(void) { efs_inode_cachep = kmem_cache_create("efs_inode_cache", sizeof(struct efs_inode_info), @@ -105,14 +112,9 @@ static void destroy_inodecache(void) kmem_cache_destroy(efs_inode_cachep); } -static void efs_put_super(struct super_block *s) -{ - kfree(s->s_fs_info); - s->s_fs_info = NULL; -} - static int efs_remount(struct super_block *sb, int *flags, char *data) { + sync_filesystem(sb); *flags |= MS_RDONLY; return 0; } @@ -120,7 +122,6 @@ static int efs_remount(struct super_block *sb, int *flags, char *data) static const struct super_operations efs_superblock_operations = { .alloc_inode = efs_alloc_inode, .destroy_inode = efs_destroy_inode, - .put_super = efs_put_super, .statfs = efs_statfs, .remount_fs = efs_remount, }; @@ -259,7 +260,6 @@ static int efs_fill_super(struct super_block *s, void *d, int silent) struct efs_sb_info *sb; struct buffer_head *bh; struct inode *root; - int ret = -EINVAL; sb = kzalloc(sizeof(struct efs_sb_info), GFP_KERNEL); if (!sb) @@ -270,7 +270,7 @@ static int efs_fill_super(struct super_block *s, void *d, int silent) if (!sb_set_blocksize(s, EFS_BLOCKSIZE)) { printk(KERN_ERR "EFS: device does not support %d byte blocks\n", EFS_BLOCKSIZE); - goto out_no_fs_ul; + return -EINVAL; } /* read the vh (volume header) block */ @@ -278,7 +278,7 @@ static int efs_fill_super(struct super_block *s, void *d, int silent) if (!bh) { printk(KERN_ERR "EFS: cannot read volume header\n"); - goto out_no_fs_ul; + return -EINVAL; } /* @@ -290,13 +290,13 @@ static int efs_fill_super(struct super_block *s, void *d, int silent) brelse(bh); if (sb->fs_start == -1) { - goto out_no_fs_ul; + return -EINVAL; } bh = sb_bread(s, sb->fs_start + EFS_SUPER); if (!bh) { printk(KERN_ERR "EFS: cannot read superblock\n"); - goto out_no_fs_ul; + return -EINVAL; } if (efs_validate_super(sb, (struct efs_super *) bh->b_data)) { @@ -304,7 +304,7 @@ static int efs_fill_super(struct super_block *s, void *d, int silent) printk(KERN_WARNING "EFS: invalid superblock at block %u\n", sb->fs_start + EFS_SUPER); #endif brelse(bh); - goto out_no_fs_ul; + return -EINVAL; } brelse(bh); @@ -319,24 +319,16 @@ static int efs_fill_super(struct super_block *s, void *d, int silent) root = efs_iget(s, EFS_ROOTINODE); if (IS_ERR(root)) { printk(KERN_ERR "EFS: get root inode failed\n"); - ret = PTR_ERR(root); - goto out_no_fs; + return PTR_ERR(root); } s->s_root = d_make_root(root); if (!(s->s_root)) { printk(KERN_ERR "EFS: get root dentry failed\n"); - ret = -ENOMEM; - goto out_no_fs; + return -ENOMEM; } return 0; - -out_no_fs_ul: -out_no_fs: - s->s_fs_info = NULL; - kfree(sb); - return ret; } static int efs_statfs(struct dentry *dentry, struct kstatfs *buf) { diff --git a/fs/eventfd.c b/fs/eventfd.c index 35470d9b96e6..d6a88e7812f3 100644 --- a/fs/eventfd.c +++ b/fs/eventfd.c @@ -349,15 +349,12 @@ EXPORT_SYMBOL_GPL(eventfd_fget); */ struct eventfd_ctx *eventfd_ctx_fdget(int fd) { - struct file *file; struct eventfd_ctx *ctx; - - file = eventfd_fget(fd); - if (IS_ERR(file)) - return (struct eventfd_ctx *) file; - ctx = eventfd_ctx_get(file->private_data); - fput(file); - + struct fd f = fdget(fd); + if (!f.file) + return ERR_PTR(-EBADF); + ctx = eventfd_ctx_fileget(f.file); + fdput(f); return ctx; } EXPORT_SYMBOL_GPL(eventfd_ctx_fdget); diff --git a/fs/exec.c b/fs/exec.c index 7ea097f6b341..9e81c630dfa7 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -26,6 +26,7 @@ #include <linux/file.h> #include <linux/fdtable.h> #include <linux/mm.h> +#include <linux/vmacache.h> #include <linux/stat.h> #include <linux/fcntl.h> #include <linux/swap.h> @@ -62,7 +63,6 @@ #include <trace/events/task.h> #include "internal.h" -#include "coredump.h" #include <trace/events/sched.h> @@ -98,6 +98,7 @@ static inline void put_binfmt(struct linux_binfmt * fmt) module_put(fmt->module); } +#ifdef CONFIG_USELIB /* * Note that a shared library must be both readable and executable due to * security reasons. @@ -157,6 +158,7 @@ exit: out: return error; } +#endif /* #ifdef CONFIG_USELIB */ #ifdef CONFIG_MMU /* @@ -749,11 +751,10 @@ EXPORT_SYMBOL(setup_arg_pages); #endif /* CONFIG_MMU */ -struct file *open_exec(const char *name) +static struct file *do_open_exec(struct filename *name) { struct file *file; int err; - struct filename tmp = { .name = name }; static const struct open_flags open_exec_flags = { .open_flag = O_LARGEFILE | O_RDONLY | __FMODE_EXEC, .acc_mode = MAY_EXEC | MAY_OPEN, @@ -761,7 +762,7 @@ struct file *open_exec(const char *name) .lookup_flags = LOOKUP_FOLLOW, }; - file = do_filp_open(AT_FDCWD, &tmp, &open_exec_flags); + file = do_filp_open(AT_FDCWD, name, &open_exec_flags); if (IS_ERR(file)) goto out; @@ -785,6 +786,12 @@ exit: fput(file); return ERR_PTR(err); } + +struct file *open_exec(const char *name) +{ + struct filename tmp = { .name = name }; + return do_open_exec(&tmp); +} EXPORT_SYMBOL(open_exec); int kernel_read(struct file *file, loff_t offset, @@ -816,7 +823,7 @@ EXPORT_SYMBOL(read_code); static int exec_mmap(struct mm_struct *mm) { struct task_struct *tsk; - struct mm_struct * old_mm, *active_mm; + struct mm_struct *old_mm, *active_mm; /* Notify parent that we're no longer interested in the old VM */ tsk = current; @@ -842,8 +849,9 @@ static int exec_mmap(struct mm_struct *mm) tsk->mm = mm; tsk->active_mm = mm; activate_mm(active_mm, mm); + tsk->mm->vmacache_seqnum = 0; + vmacache_flush(tsk); task_unlock(tsk); - arch_pick_mmap_layout(mm); if (old_mm) { up_read(&old_mm->mmap_sem); BUG_ON(active_mm != old_mm); @@ -1038,7 +1046,7 @@ EXPORT_SYMBOL_GPL(get_task_comm); * so that a new one can be started */ -void set_task_comm(struct task_struct *tsk, char *buf) +void set_task_comm(struct task_struct *tsk, const char *buf) { task_lock(tsk); trace_task_rename(tsk, buf); @@ -1047,21 +1055,6 @@ void set_task_comm(struct task_struct *tsk, char *buf) perf_event_comm(tsk); } -static void filename_to_taskname(char *tcomm, const char *fn, unsigned int len) -{ - int i, ch; - - /* Copies the binary name from after last slash */ - for (i = 0; (ch = *(fn++)) != '\0';) { - if (ch == '/') - i = 0; /* overwrite what we wrote */ - else - if (i < len - 1) - tcomm[i++] = ch; - } - tcomm[i] = '\0'; -} - int flush_old_exec(struct linux_binprm * bprm) { int retval; @@ -1075,8 +1068,6 @@ int flush_old_exec(struct linux_binprm * bprm) goto out; set_mm_exe_file(bprm->mm, bprm->file); - - filename_to_taskname(bprm->tcomm, bprm->filename, sizeof(bprm->tcomm)); /* * Release all of the old mmap stuff */ @@ -1088,8 +1079,8 @@ int flush_old_exec(struct linux_binprm * bprm) bprm->mm = NULL; /* We're using it now */ set_fs(USER_DS); - current->flags &= - ~(PF_RANDOMIZE | PF_FORKNOEXEC | PF_KTHREAD | PF_NOFREEZE); + current->flags &= ~(PF_RANDOMIZE | PF_FORKNOEXEC | PF_KTHREAD | + PF_NOFREEZE | PF_NO_SETAFFINITY); flush_thread(); current->personality &= ~bprm->per_clear; @@ -1119,7 +1110,7 @@ void setup_new_exec(struct linux_binprm * bprm) else set_dumpable(current->mm, suid_dumpable); - set_task_comm(current, bprm->tcomm); + set_task_comm(current, kbasename(bprm->filename)); /* Set the new mm task size. We have to do that late because it may * depend on TIF_32BIT which is only updated in flush_thread() on @@ -1139,9 +1130,7 @@ void setup_new_exec(struct linux_binprm * bprm) /* An exec changes our domain. We are no longer part of the thread group */ - current->self_exec_id++; - flush_signal_handlers(current, 0); do_close_on_exec(current->files); } @@ -1166,13 +1155,17 @@ int prepare_bprm_creds(struct linux_binprm *bprm) return -ENOMEM; } -void free_bprm(struct linux_binprm *bprm) +static void free_bprm(struct linux_binprm *bprm) { free_arg_pages(bprm); if (bprm->cred) { mutex_unlock(¤t->signal->cred_guard_mutex); abort_creds(bprm->cred); } + if (bprm->file) { + allow_write_access(bprm->file); + fput(bprm->file); + } /* If a binfmt changed the interp, free it. */ if (bprm->interp != bprm->filename) kfree(bprm->interp); @@ -1224,11 +1217,10 @@ EXPORT_SYMBOL(install_exec_creds); * - the caller must hold ->cred_guard_mutex to protect against * PTRACE_ATTACH */ -static int check_unsafe_exec(struct linux_binprm *bprm) +static void check_unsafe_exec(struct linux_binprm *bprm) { struct task_struct *p = current, *t; unsigned n_fs; - int res = 0; if (p->ptrace) { if (p->ptrace & PT_PTRACE_CAP) @@ -1244,31 +1236,25 @@ static int check_unsafe_exec(struct linux_binprm *bprm) if (current->no_new_privs) bprm->unsafe |= LSM_UNSAFE_NO_NEW_PRIVS; + t = p; n_fs = 1; spin_lock(&p->fs->lock); rcu_read_lock(); - for (t = next_thread(p); t != p; t = next_thread(t)) { + while_each_thread(p, t) { if (t->fs == p->fs) n_fs++; } rcu_read_unlock(); - if (p->fs->users > n_fs) { + if (p->fs->users > n_fs) bprm->unsafe |= LSM_UNSAFE_SHARE; - } else { - res = -EAGAIN; - if (!p->fs->in_exec) { - p->fs->in_exec = 1; - res = 1; - } - } + else + p->fs->in_exec = 1; spin_unlock(&p->fs->lock); - - return res; } -/* - * Fill the binprm structure from the inode. +/* + * Fill the binprm structure from the inode. * Check permissions, then read the first 128 (BINPRM_BUF_SIZE) bytes * * This may be called multiple times for binary chains (scripts for example). @@ -1430,14 +1416,7 @@ static int exec_binprm(struct linux_binprm *bprm) audit_bprm(bprm); trace_sched_process_exec(current, old_pid, bprm); ptrace_event(PTRACE_EVENT_EXEC, old_vpid); - current->did_exec = 1; proc_exec_connector(current); - - if (bprm->file) { - allow_write_access(bprm->file); - fput(bprm->file); - bprm->file = NULL; /* to catch use-after-free */ - } } return ret; @@ -1446,16 +1425,18 @@ static int exec_binprm(struct linux_binprm *bprm) /* * sys_execve() executes a new program. */ -static int do_execve_common(const char *filename, +static int do_execve_common(struct filename *filename, struct user_arg_ptr argv, struct user_arg_ptr envp) { struct linux_binprm *bprm; struct file *file; struct files_struct *displaced; - bool clear_in_exec; int retval; + if (IS_ERR(filename)) + return PTR_ERR(filename); + /* * We move the actual failure in case of RLIMIT_NPROC excess from * set*uid() to execve() because too many poorly written programs @@ -1485,13 +1466,10 @@ static int do_execve_common(const char *filename, if (retval) goto out_free; - retval = check_unsafe_exec(bprm); - if (retval < 0) - goto out_free; - clear_in_exec = retval; + check_unsafe_exec(bprm); current->in_execve = 1; - file = open_exec(filename); + file = do_open_exec(filename); retval = PTR_ERR(file); if (IS_ERR(file)) goto out_unmark; @@ -1499,12 +1477,11 @@ static int do_execve_common(const char *filename, sched_exec(); bprm->file = file; - bprm->filename = filename; - bprm->interp = filename; + bprm->filename = bprm->interp = filename->name; retval = bprm_mm_init(bprm); if (retval) - goto out_file; + goto out_unmark; bprm->argc = count(argv, MAX_ARG_STRINGS); if ((retval = bprm->argc) < 0) @@ -1541,6 +1518,7 @@ static int do_execve_common(const char *filename, acct_update_integrals(current); task_numa_free(current); free_bprm(bprm); + putname(filename); if (displaced) put_files_struct(displaced); return retval; @@ -1551,15 +1529,8 @@ out: mmput(bprm->mm); } -out_file: - if (bprm->file) { - allow_write_access(bprm->file); - fput(bprm->file); - } - out_unmark: - if (clear_in_exec) - current->fs->in_exec = 0; + current->fs->in_exec = 0; current->in_execve = 0; out_free: @@ -1569,10 +1540,11 @@ out_files: if (displaced) reset_files_struct(displaced); out_ret: + putname(filename); return retval; } -int do_execve(const char *filename, +int do_execve(struct filename *filename, const char __user *const __user *__argv, const char __user *const __user *__envp) { @@ -1582,7 +1554,7 @@ int do_execve(const char *filename, } #ifdef CONFIG_COMPAT -static int compat_do_execve(const char *filename, +static int compat_do_execve(struct filename *filename, const compat_uptr_t __user *__argv, const compat_uptr_t __user *__envp) { @@ -1609,67 +1581,22 @@ void set_binfmt(struct linux_binfmt *new) if (new) __module_get(new->module); } - EXPORT_SYMBOL(set_binfmt); /* - * set_dumpable converts traditional three-value dumpable to two flags and - * stores them into mm->flags. It modifies lower two bits of mm->flags, but - * these bits are not changed atomically. So get_dumpable can observe the - * intermediate state. To avoid doing unexpected behavior, get get_dumpable - * return either old dumpable or new one by paying attention to the order of - * modifying the bits. - * - * dumpable | mm->flags (binary) - * old new | initial interim final - * ---------+----------------------- - * 0 1 | 00 01 01 - * 0 2 | 00 10(*) 11 - * 1 0 | 01 00 00 - * 1 2 | 01 11 11 - * 2 0 | 11 10(*) 00 - * 2 1 | 11 11 01 - * - * (*) get_dumpable regards interim value of 10 as 11. + * set_dumpable stores three-value SUID_DUMP_* into mm->flags. */ void set_dumpable(struct mm_struct *mm, int value) { - switch (value) { - case SUID_DUMP_DISABLE: - clear_bit(MMF_DUMPABLE, &mm->flags); - smp_wmb(); - clear_bit(MMF_DUMP_SECURELY, &mm->flags); - break; - case SUID_DUMP_USER: - set_bit(MMF_DUMPABLE, &mm->flags); - smp_wmb(); - clear_bit(MMF_DUMP_SECURELY, &mm->flags); - break; - case SUID_DUMP_ROOT: - set_bit(MMF_DUMP_SECURELY, &mm->flags); - smp_wmb(); - set_bit(MMF_DUMPABLE, &mm->flags); - break; - } -} + unsigned long old, new; -int __get_dumpable(unsigned long mm_flags) -{ - int ret; - - ret = mm_flags & MMF_DUMPABLE_MASK; - return (ret > SUID_DUMP_USER) ? SUID_DUMP_ROOT : ret; -} + if (WARN_ON((unsigned)value > SUID_DUMP_ROOT)) + return; -/* - * This returns the actual value of the suid_dumpable flag. For things - * that are using this for checking for privilege transitions, it must - * test against SUID_DUMP_USER rather than treating it as a boolean - * value. - */ -int get_dumpable(struct mm_struct *mm) -{ - return __get_dumpable(mm->flags); + do { + old = ACCESS_ONCE(mm->flags); + new = (old & ~MMF_DUMPABLE_MASK) | value; + } while (cmpxchg(&mm->flags, old, new) != old); } SYSCALL_DEFINE3(execve, @@ -1677,25 +1604,13 @@ SYSCALL_DEFINE3(execve, const char __user *const __user *, argv, const char __user *const __user *, envp) { - struct filename *path = getname(filename); - int error = PTR_ERR(path); - if (!IS_ERR(path)) { - error = do_execve(path->name, argv, envp); - putname(path); - } - return error; + return do_execve(getname(filename), argv, envp); } #ifdef CONFIG_COMPAT -asmlinkage long compat_sys_execve(const char __user * filename, - const compat_uptr_t __user * argv, - const compat_uptr_t __user * envp) +COMPAT_SYSCALL_DEFINE3(execve, const char __user *, filename, + const compat_uptr_t __user *, argv, + const compat_uptr_t __user *, envp) { - struct filename *path = getname(filename); - int error = PTR_ERR(path); - if (!IS_ERR(path)) { - error = compat_do_execve(path->name, argv, envp); - putname(path); - } - return error; + return compat_do_execve(getname(filename), argv, envp); } #endif diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c index a52a5d23c30b..d1c244d67667 100644 --- a/fs/exofs/inode.c +++ b/fs/exofs/inode.c @@ -577,7 +577,7 @@ static struct page *__r4w_get_page(void *priv, u64 offset, bool *uptodate) if (offset >= i_size) { *uptodate = true; - EXOFS_DBGMSG("offset >= i_size index=0x%lx\n", index); + EXOFS_DBGMSG2("offset >= i_size index=0x%lx\n", index); return ZERO_PAGE(0); } @@ -596,10 +596,10 @@ static struct page *__r4w_get_page(void *priv, u64 offset, bool *uptodate) *uptodate = true; else *uptodate = PageUptodate(page); - EXOFS_DBGMSG("index=0x%lx uptodate=%d\n", index, *uptodate); + EXOFS_DBGMSG2("index=0x%lx uptodate=%d\n", index, *uptodate); return page; } else { - EXOFS_DBGMSG("YES that_locked_page index=0x%lx\n", + EXOFS_DBGMSG2("YES that_locked_page index=0x%lx\n", pcol->that_locked_page->index); *uptodate = true; return pcol->that_locked_page; @@ -611,11 +611,11 @@ static void __r4w_put_page(void *priv, struct page *page) struct page_collect *pcol = priv; if ((pcol->that_locked_page != page) && (ZERO_PAGE(0) != page)) { - EXOFS_DBGMSG("index=0x%lx\n", page->index); + EXOFS_DBGMSG2("index=0x%lx\n", page->index); page_cache_release(page); return; } - EXOFS_DBGMSG("that_locked_page index=0x%lx\n", + EXOFS_DBGMSG2("that_locked_page index=0x%lx\n", ZERO_PAGE(0) == page ? -1 : page->index); } @@ -961,6 +961,14 @@ static void exofs_invalidatepage(struct page *page, unsigned int offset, WARN_ON(1); } + + /* TODO: Should be easy enough to do proprly */ +static ssize_t exofs_direct_IO(int rw, struct kiocb *iocb, + const struct iovec *iov, loff_t offset, unsigned long nr_segs) +{ + return 0; +} + const struct address_space_operations exofs_aops = { .readpage = exofs_readpage, .readpages = exofs_readpages, @@ -974,7 +982,7 @@ const struct address_space_operations exofs_aops = { /* Not implemented Yet */ .bmap = NULL, /* TODO: use osd's OSD_ACT_READ_MAP */ - .direct_IO = NULL, /* TODO: Should be trivial to do */ + .direct_IO = exofs_direct_IO, /* With these NULL has special meaning or default is not exported */ .get_xip_mem = NULL, @@ -1010,7 +1018,7 @@ static int _do_truncate(struct inode *inode, loff_t newsize) if (likely(!ret)) truncate_setsize(inode, newsize); - EXOFS_DBGMSG("(0x%lx) size=0x%llx ret=>%d\n", + EXOFS_DBGMSG2("(0x%lx) size=0x%llx ret=>%d\n", inode->i_ino, newsize, ret); return ret; } @@ -1094,14 +1102,13 @@ static int exofs_get_inode(struct super_block *sb, struct exofs_i_info *oi, /* If object is lost on target we might as well enable it's * delete. */ - if ((ret == -ENOENT) || (ret == -EINVAL)) - ret = 0; + ret = 0; goto out; } ret = extract_attr_from_ios(ios, &attrs[0]); if (ret) { - EXOFS_ERR("%s: extract_attr of inode_data failed\n", __func__); + EXOFS_ERR("%s: extract_attr 0 of inode failed\n", __func__); goto out; } WARN_ON(attrs[0].len != EXOFS_INO_ATTR_SIZE); @@ -1109,7 +1116,7 @@ static int exofs_get_inode(struct super_block *sb, struct exofs_i_info *oi, ret = extract_attr_from_ios(ios, &attrs[1]); if (ret) { - EXOFS_ERR("%s: extract_attr of inode_data failed\n", __func__); + EXOFS_ERR("%s: extract_attr 1 of inode failed\n", __func__); goto out; } if (attrs[1].len) { @@ -1124,7 +1131,7 @@ static int exofs_get_inode(struct super_block *sb, struct exofs_i_info *oi, ret = extract_attr_from_ios(ios, &attrs[2]); if (ret) { - EXOFS_ERR("%s: extract_attr of inode_data failed\n", __func__); + EXOFS_ERR("%s: extract_attr 2 of inode failed\n", __func__); goto out; } if (attrs[2].len) { @@ -1479,7 +1486,7 @@ void exofs_evict_inode(struct inode *inode) struct ore_io_state *ios; int ret; - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); /* TODO: should do better here */ if (inode->i_nlink || is_bad_inode(inode)) diff --git a/fs/exofs/ore.c b/fs/exofs/ore.c index b74422888604..dae884694bd9 100644 --- a/fs/exofs/ore.c +++ b/fs/exofs/ore.c @@ -103,7 +103,7 @@ int ore_verify_layout(unsigned total_comps, struct ore_layout *layout) layout->max_io_length = (BIO_MAX_PAGES_KMALLOC * PAGE_SIZE - layout->stripe_unit) * - layout->group_width; + (layout->group_width - layout->parity); if (layout->parity) { unsigned stripe_length = (layout->group_width - layout->parity) * @@ -286,7 +286,8 @@ int ore_get_rw_state(struct ore_layout *layout, struct ore_components *oc, if (length) { ore_calc_stripe_info(layout, offset, length, &ios->si); ios->length = ios->si.length; - ios->nr_pages = (ios->length + PAGE_SIZE - 1) / PAGE_SIZE; + ios->nr_pages = ((ios->offset & (PAGE_SIZE - 1)) + + ios->length + PAGE_SIZE - 1) / PAGE_SIZE; if (layout->parity) _ore_post_alloc_raid_stuff(ios); } @@ -430,8 +431,12 @@ int ore_check_io(struct ore_io_state *ios, ore_on_dev_error on_dev_error) if (likely(!ret)) continue; - if (OSD_ERR_PRI_CLEAR_PAGES == osi.osd_err_pri) { - /* start read offset passed endof file */ + if ((OSD_ERR_PRI_CLEAR_PAGES == osi.osd_err_pri) && + per_dev->bio) { + /* start read offset passed endof file. + * Note: if we do not have bio it means read-attributes + * In this case we should return error to caller. + */ _clear_bio(per_dev->bio); ORE_DBGMSG("start read offset passed end of file " "offset=0x%llx, length=0x%llx\n", @@ -536,6 +541,7 @@ void ore_calc_stripe_info(struct ore_layout *layout, u64 file_offset, u64 H = LmodS - G * T; u32 N = div_u64(H, U); + u32 Nlast; /* "H - (N * U)" is just "H % U" so it's bound to u32 */ u32 C = (u32)(H - (N * U)) / stripe_unit + G * group_width; @@ -568,6 +574,10 @@ void ore_calc_stripe_info(struct ore_layout *layout, u64 file_offset, si->length = T - H; if (si->length > length) si->length = length; + + Nlast = div_u64(H + si->length + U - 1, U); + si->maxdevUnits = Nlast - N; + si->M = M; } EXPORT_SYMBOL(ore_calc_stripe_info); @@ -583,13 +593,16 @@ int _ore_add_stripe_unit(struct ore_io_state *ios, unsigned *cur_pg, int ret; if (per_dev->bio == NULL) { - unsigned pages_in_stripe = ios->layout->group_width * - (ios->layout->stripe_unit / PAGE_SIZE); - unsigned nr_pages = ios->nr_pages * ios->layout->group_width / - (ios->layout->group_width - - ios->layout->parity); - unsigned bio_size = (nr_pages + pages_in_stripe) / - ios->layout->group_width; + unsigned bio_size; + + if (!ios->reading) { + bio_size = ios->si.maxdevUnits; + } else { + bio_size = (ios->si.maxdevUnits + 1) * + (ios->layout->group_width - ios->layout->parity) / + ios->layout->group_width; + } + bio_size *= (ios->layout->stripe_unit / PAGE_SIZE); per_dev->bio = bio_kmalloc(GFP_KERNEL, bio_size); if (unlikely(!per_dev->bio)) { @@ -609,8 +622,12 @@ int _ore_add_stripe_unit(struct ore_io_state *ios, unsigned *cur_pg, added_len = bio_add_pc_page(q, per_dev->bio, pages[pg], pglen, pgbase); if (unlikely(pglen != added_len)) { - ORE_DBGMSG("Failed bio_add_pc_page bi_vcnt=%u\n", - per_dev->bio->bi_vcnt); + /* If bi_vcnt == bi_max then this is a SW BUG */ + ORE_DBGMSG("Failed bio_add_pc_page bi_vcnt=0x%x " + "bi_max=0x%x BIO_MAX=0x%x cur_len=0x%x\n", + per_dev->bio->bi_vcnt, + per_dev->bio->bi_max_vecs, + BIO_MAX_PAGES_KMALLOC, cur_len); ret = -ENOMEM; goto out; } @@ -1098,7 +1115,7 @@ int ore_truncate(struct ore_layout *layout, struct ore_components *oc, size_attr->attr = g_attr_logical_length; size_attr->attr.val_ptr = &size_attr->newsize; - ORE_DBGMSG("trunc(0x%llx) obj_offset=0x%llx dev=%d\n", + ORE_DBGMSG2("trunc(0x%llx) obj_offset=0x%llx dev=%d\n", _LLU(oc->comps->obj.id), _LLU(obj_size), i); ret = _truncate_mirrors(ios, i * ios->layout->mirrors_p1, &size_attr->attr); diff --git a/fs/exofs/ore_raid.c b/fs/exofs/ore_raid.c index 7682b970d0f1..4e2c032ab8a1 100644 --- a/fs/exofs/ore_raid.c +++ b/fs/exofs/ore_raid.c @@ -21,12 +21,12 @@ #undef ORE_DBGMSG2 #define ORE_DBGMSG2 ORE_DBGMSG -struct page *_raid_page_alloc(void) +static struct page *_raid_page_alloc(void) { return alloc_page(GFP_KERNEL); } -void _raid_page_free(struct page *p) +static void _raid_page_free(struct page *p) { __free_page(p); } diff --git a/fs/exofs/super.c b/fs/exofs/super.c index 9d9763328734..ed73ed8ebbee 100644 --- a/fs/exofs/super.c +++ b/fs/exofs/super.c @@ -543,7 +543,7 @@ static int exofs_devs_2_odi(struct exofs_dt_device_info *dt_dev, return !(odi->systemid_len || odi->osdname_len); } -int __alloc_dev_table(struct exofs_sb_info *sbi, unsigned numdevs, +static int __alloc_dev_table(struct exofs_sb_info *sbi, unsigned numdevs, struct exofs_dev **peds) { struct __alloc_ore_devs_and_exofs_devs { diff --git a/fs/ext2/acl.c b/fs/ext2/acl.c index 110b6b371a4e..27695e6f4e46 100644 --- a/fs/ext2/acl.c +++ b/fs/ext2/acl.c @@ -4,7 +4,6 @@ * Copyright (C) 2001-2003 Andreas Gruenbacher, <agruen@suse.de> */ -#include <linux/capability.h> #include <linux/init.h> #include <linux/sched.h> #include <linux/slab.h> @@ -148,13 +147,6 @@ ext2_get_acl(struct inode *inode, int type) struct posix_acl *acl; int retval; - if (!test_opt(inode->i_sb, POSIX_ACL)) - return NULL; - - acl = get_cached_acl(inode, type); - if (acl != ACL_NOT_CACHED) - return acl; - switch (type) { case ACL_TYPE_ACCESS: name_index = EXT2_XATTR_INDEX_POSIX_ACL_ACCESS; @@ -189,19 +181,14 @@ ext2_get_acl(struct inode *inode, int type) /* * inode->i_mutex: down */ -static int -ext2_set_acl(struct inode *inode, int type, struct posix_acl *acl) +int +ext2_set_acl(struct inode *inode, struct posix_acl *acl, int type) { int name_index; void *value = NULL; size_t size = 0; int error; - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - if (!test_opt(inode->i_sb, POSIX_ACL)) - return 0; - switch(type) { case ACL_TYPE_ACCESS: name_index = EXT2_XATTR_INDEX_POSIX_ACL_ACCESS; @@ -250,169 +237,21 @@ ext2_set_acl(struct inode *inode, int type, struct posix_acl *acl) int ext2_init_acl(struct inode *inode, struct inode *dir) { - struct posix_acl *acl = NULL; - int error = 0; - - if (!S_ISLNK(inode->i_mode)) { - if (test_opt(dir->i_sb, POSIX_ACL)) { - acl = ext2_get_acl(dir, ACL_TYPE_DEFAULT); - if (IS_ERR(acl)) - return PTR_ERR(acl); - } - if (!acl) - inode->i_mode &= ~current_umask(); - } - if (test_opt(inode->i_sb, POSIX_ACL) && acl) { - if (S_ISDIR(inode->i_mode)) { - error = ext2_set_acl(inode, ACL_TYPE_DEFAULT, acl); - if (error) - goto cleanup; - } - error = posix_acl_create(&acl, GFP_KERNEL, &inode->i_mode); - if (error < 0) - return error; - if (error > 0) { - /* This is an extended ACL */ - error = ext2_set_acl(inode, ACL_TYPE_ACCESS, acl); - } - } -cleanup: - posix_acl_release(acl); - return error; -} - -/* - * Does chmod for an inode that may have an Access Control List. The - * inode->i_mode field must be updated to the desired value by the caller - * before calling this function. - * Returns 0 on success, or a negative error number. - * - * We change the ACL rather than storing some ACL entries in the file - * mode permission bits (which would be more efficient), because that - * would break once additional permissions (like ACL_APPEND, ACL_DELETE - * for directories) are added. There are no more bits available in the - * file mode. - * - * inode->i_mutex: down - */ -int -ext2_acl_chmod(struct inode *inode) -{ - struct posix_acl *acl; - int error; + struct posix_acl *default_acl, *acl; + int error; - if (!test_opt(inode->i_sb, POSIX_ACL)) - return 0; - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - acl = ext2_get_acl(inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl) || !acl) - return PTR_ERR(acl); - error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); + error = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl); if (error) return error; - error = ext2_set_acl(inode, ACL_TYPE_ACCESS, acl); - posix_acl_release(acl); - return error; -} -/* - * Extended attribut handlers - */ -static size_t -ext2_xattr_list_acl_access(struct dentry *dentry, char *list, size_t list_size, - const char *name, size_t name_len, int type) -{ - const size_t size = sizeof(POSIX_ACL_XATTR_ACCESS); - - if (!test_opt(dentry->d_sb, POSIX_ACL)) - return 0; - if (list && size <= list_size) - memcpy(list, POSIX_ACL_XATTR_ACCESS, size); - return size; -} - -static size_t -ext2_xattr_list_acl_default(struct dentry *dentry, char *list, size_t list_size, - const char *name, size_t name_len, int type) -{ - const size_t size = sizeof(POSIX_ACL_XATTR_DEFAULT); - - if (!test_opt(dentry->d_sb, POSIX_ACL)) - return 0; - if (list && size <= list_size) - memcpy(list, POSIX_ACL_XATTR_DEFAULT, size); - return size; -} - -static int -ext2_xattr_get_acl(struct dentry *dentry, const char *name, void *buffer, - size_t size, int type) -{ - struct posix_acl *acl; - int error; - - if (strcmp(name, "") != 0) - return -EINVAL; - if (!test_opt(dentry->d_sb, POSIX_ACL)) - return -EOPNOTSUPP; - - acl = ext2_get_acl(dentry->d_inode, type); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl == NULL) - return -ENODATA; - error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size); - posix_acl_release(acl); - - return error; -} - -static int -ext2_xattr_set_acl(struct dentry *dentry, const char *name, const void *value, - size_t size, int flags, int type) -{ - struct posix_acl *acl; - int error; - - if (strcmp(name, "") != 0) - return -EINVAL; - if (!test_opt(dentry->d_sb, POSIX_ACL)) - return -EOPNOTSUPP; - if (!inode_owner_or_capable(dentry->d_inode)) - return -EPERM; - - if (value) { - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (IS_ERR(acl)) - return PTR_ERR(acl); - else if (acl) { - error = posix_acl_valid(acl); - if (error) - goto release_and_out; - } - } else - acl = NULL; - - error = ext2_set_acl(dentry->d_inode, type, acl); - -release_and_out: - posix_acl_release(acl); + if (default_acl) { + error = ext2_set_acl(inode, default_acl, ACL_TYPE_DEFAULT); + posix_acl_release(default_acl); + } + if (acl) { + if (!error) + error = ext2_set_acl(inode, acl, ACL_TYPE_ACCESS); + posix_acl_release(acl); + } return error; } - -const struct xattr_handler ext2_xattr_acl_access_handler = { - .prefix = POSIX_ACL_XATTR_ACCESS, - .flags = ACL_TYPE_ACCESS, - .list = ext2_xattr_list_acl_access, - .get = ext2_xattr_get_acl, - .set = ext2_xattr_set_acl, -}; - -const struct xattr_handler ext2_xattr_acl_default_handler = { - .prefix = POSIX_ACL_XATTR_DEFAULT, - .flags = ACL_TYPE_DEFAULT, - .list = ext2_xattr_list_acl_default, - .get = ext2_xattr_get_acl, - .set = ext2_xattr_set_acl, -}; diff --git a/fs/ext2/acl.h b/fs/ext2/acl.h index 503bfb0ed79b..44937f9fcf32 100644 --- a/fs/ext2/acl.h +++ b/fs/ext2/acl.h @@ -55,7 +55,7 @@ static inline int ext2_acl_count(size_t size) /* acl.c */ extern struct posix_acl *ext2_get_acl(struct inode *inode, int type); -extern int ext2_acl_chmod (struct inode *); +extern int ext2_set_acl(struct inode *inode, struct posix_acl *acl, int type); extern int ext2_init_acl (struct inode *, struct inode *); #else @@ -63,12 +63,6 @@ extern int ext2_init_acl (struct inode *, struct inode *); #define ext2_get_acl NULL #define ext2_set_acl NULL -static inline int -ext2_acl_chmod (struct inode *inode) -{ - return 0; -} - static inline int ext2_init_acl (struct inode *inode, struct inode *dir) { return 0; diff --git a/fs/ext2/file.c b/fs/ext2/file.c index a5b3a5db3120..44c36e590765 100644 --- a/fs/ext2/file.c +++ b/fs/ext2/file.c @@ -103,5 +103,6 @@ const struct inode_operations ext2_file_inode_operations = { #endif .setattr = ext2_setattr, .get_acl = ext2_get_acl, + .set_acl = ext2_set_acl, .fiemap = ext2_fiemap, }; diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c index 7cadd823bb31..7d66fb0e4cca 100644 --- a/fs/ext2/ialloc.c +++ b/fs/ext2/ialloc.c @@ -284,7 +284,7 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent) int best_ndir = inodes_per_group; int best_group = -1; - get_random_bytes(&group, sizeof(group)); + group = prandom_u32(); parent_group = (unsigned)group % ngroups; for (i = 0; i < ngroups; i++) { group = (parent_group + i) % ngroups; diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index 8a337640a46a..b1d2a4675d42 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -78,7 +78,7 @@ void ext2_evict_inode(struct inode * inode) dquot_drop(inode); } - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); if (want_delete) { sb_start_intwrite(inode->i_sb); @@ -1566,7 +1566,7 @@ int ext2_setattr(struct dentry *dentry, struct iattr *iattr) } setattr_copy(inode, iattr); if (iattr->ia_valid & ATTR_MODE) - error = ext2_acl_chmod(inode); + error = posix_acl_chmod(inode, inode->i_mode); mark_inode_dirty(inode); return error; diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c index 256dd5f4c1c4..c268d0af1db9 100644 --- a/fs/ext2/namei.c +++ b/fs/ext2/namei.c @@ -421,6 +421,7 @@ const struct inode_operations ext2_dir_inode_operations = { #endif .setattr = ext2_setattr, .get_acl = ext2_get_acl, + .set_acl = ext2_set_acl, .tmpfile = ext2_tmpfile, }; @@ -433,4 +434,5 @@ const struct inode_operations ext2_special_inode_operations = { #endif .setattr = ext2_setattr, .get_acl = ext2_get_acl, + .set_acl = ext2_set_acl, }; diff --git a/fs/ext2/super.c b/fs/ext2/super.c index 20d6697bd638..3750031cfa2f 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -192,7 +192,7 @@ static void init_once(void *foo) inode_init_once(&ei->vfs_inode); } -static int init_inodecache(void) +static int __init init_inodecache(void) { ext2_inode_cachep = kmem_cache_create("ext2_inode_cache", sizeof(struct ext2_inode_info), @@ -1254,6 +1254,7 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data) unsigned long old_sb_flags; int err; + sync_filesystem(sb); spin_lock(&sbi->s_lock); /* Store the old options */ diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c index 2d7557db3ae8..91426141c33a 100644 --- a/fs/ext2/xattr.c +++ b/fs/ext2/xattr.c @@ -103,8 +103,8 @@ static struct mb_cache *ext2_xattr_cache; static const struct xattr_handler *ext2_xattr_handler_map[] = { [EXT2_XATTR_INDEX_USER] = &ext2_xattr_user_handler, #ifdef CONFIG_EXT2_FS_POSIX_ACL - [EXT2_XATTR_INDEX_POSIX_ACL_ACCESS] = &ext2_xattr_acl_access_handler, - [EXT2_XATTR_INDEX_POSIX_ACL_DEFAULT] = &ext2_xattr_acl_default_handler, + [EXT2_XATTR_INDEX_POSIX_ACL_ACCESS] = &posix_acl_access_xattr_handler, + [EXT2_XATTR_INDEX_POSIX_ACL_DEFAULT] = &posix_acl_default_xattr_handler, #endif [EXT2_XATTR_INDEX_TRUSTED] = &ext2_xattr_trusted_handler, #ifdef CONFIG_EXT2_FS_SECURITY @@ -116,8 +116,8 @@ const struct xattr_handler *ext2_xattr_handlers[] = { &ext2_xattr_user_handler, &ext2_xattr_trusted_handler, #ifdef CONFIG_EXT2_FS_POSIX_ACL - &ext2_xattr_acl_access_handler, - &ext2_xattr_acl_default_handler, + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, #endif #ifdef CONFIG_EXT2_FS_SECURITY &ext2_xattr_security_handler, diff --git a/fs/ext2/xattr.h b/fs/ext2/xattr.h index 5e41cccff762..60edf298644e 100644 --- a/fs/ext2/xattr.h +++ b/fs/ext2/xattr.h @@ -57,8 +57,6 @@ struct ext2_xattr_entry { extern const struct xattr_handler ext2_xattr_user_handler; extern const struct xattr_handler ext2_xattr_trusted_handler; -extern const struct xattr_handler ext2_xattr_acl_access_handler; -extern const struct xattr_handler ext2_xattr_acl_default_handler; extern const struct xattr_handler ext2_xattr_security_handler; extern ssize_t ext2_listxattr(struct dentry *, char *, size_t); diff --git a/fs/ext2/xattr_security.c b/fs/ext2/xattr_security.c index cfedb2cb0d8c..c0ebc4db8849 100644 --- a/fs/ext2/xattr_security.c +++ b/fs/ext2/xattr_security.c @@ -42,8 +42,8 @@ ext2_xattr_security_set(struct dentry *dentry, const char *name, value, size, flags); } -int ext2_initxattrs(struct inode *inode, const struct xattr *xattr_array, - void *fs_info) +static int ext2_initxattrs(struct inode *inode, const struct xattr *xattr_array, + void *fs_info) { const struct xattr *xattr; int err = 0; diff --git a/fs/ext3/acl.c b/fs/ext3/acl.c index dbb5ad59a7fc..8bbaf5bcf982 100644 --- a/fs/ext3/acl.c +++ b/fs/ext3/acl.c @@ -145,13 +145,6 @@ ext3_get_acl(struct inode *inode, int type) struct posix_acl *acl; int retval; - if (!test_opt(inode->i_sb, POSIX_ACL)) - return NULL; - - acl = get_cached_acl(inode, type); - if (acl != ACL_NOT_CACHED) - return acl; - switch (type) { case ACL_TYPE_ACCESS: name_index = EXT3_XATTR_INDEX_POSIX_ACL_ACCESS; @@ -190,7 +183,7 @@ ext3_get_acl(struct inode *inode, int type) * inode->i_mutex: down unless called from ext3_new_inode */ static int -ext3_set_acl(handle_t *handle, struct inode *inode, int type, +__ext3_set_acl(handle_t *handle, struct inode *inode, int type, struct posix_acl *acl) { int name_index; @@ -198,9 +191,6 @@ ext3_set_acl(handle_t *handle, struct inode *inode, int type, size_t size = 0; int error; - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - switch(type) { case ACL_TYPE_ACCESS: name_index = EXT3_XATTR_INDEX_POSIX_ACL_ACCESS; @@ -243,204 +233,49 @@ ext3_set_acl(handle_t *handle, struct inode *inode, int type, return error; } -/* - * Initialize the ACLs of a new inode. Called from ext3_new_inode. - * - * dir->i_mutex: down - * inode->i_mutex: up (access to inode is still exclusive) - */ int -ext3_init_acl(handle_t *handle, struct inode *inode, struct inode *dir) +ext3_set_acl(struct inode *inode, struct posix_acl *acl, int type) { - struct posix_acl *acl = NULL; - int error = 0; - - if (!S_ISLNK(inode->i_mode)) { - if (test_opt(dir->i_sb, POSIX_ACL)) { - acl = ext3_get_acl(dir, ACL_TYPE_DEFAULT); - if (IS_ERR(acl)) - return PTR_ERR(acl); - } - if (!acl) - inode->i_mode &= ~current_umask(); - } - if (test_opt(inode->i_sb, POSIX_ACL) && acl) { - if (S_ISDIR(inode->i_mode)) { - error = ext3_set_acl(handle, inode, - ACL_TYPE_DEFAULT, acl); - if (error) - goto cleanup; - } - error = posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); - if (error < 0) - return error; - - if (error > 0) { - /* This is an extended ACL */ - error = ext3_set_acl(handle, inode, ACL_TYPE_ACCESS, acl); - } - } -cleanup: - posix_acl_release(acl); - return error; -} - -/* - * Does chmod for an inode that may have an Access Control List. The - * inode->i_mode field must be updated to the desired value by the caller - * before calling this function. - * Returns 0 on success, or a negative error number. - * - * We change the ACL rather than storing some ACL entries in the file - * mode permission bits (which would be more efficient), because that - * would break once additional permissions (like ACL_APPEND, ACL_DELETE - * for directories) are added. There are no more bits available in the - * file mode. - * - * inode->i_mutex: down - */ -int -ext3_acl_chmod(struct inode *inode) -{ - struct posix_acl *acl; handle_t *handle; - int retries = 0; - int error; + int error, retries = 0; - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - if (!test_opt(inode->i_sb, POSIX_ACL)) - return 0; - acl = ext3_get_acl(inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl) || !acl) - return PTR_ERR(acl); - error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); - if (error) - return error; retry: - handle = ext3_journal_start(inode, - EXT3_DATA_TRANS_BLOCKS(inode->i_sb)); - if (IS_ERR(handle)) { - error = PTR_ERR(handle); - ext3_std_error(inode->i_sb, error); - goto out; - } - error = ext3_set_acl(handle, inode, ACL_TYPE_ACCESS, acl); + handle = ext3_journal_start(inode, EXT3_DATA_TRANS_BLOCKS(inode->i_sb)); + if (IS_ERR(handle)) + return PTR_ERR(handle); + error = __ext3_set_acl(handle, inode, type, acl); ext3_journal_stop(handle); - if (error == -ENOSPC && - ext3_should_retry_alloc(inode->i_sb, &retries)) + if (error == -ENOSPC && ext3_should_retry_alloc(inode->i_sb, &retries)) goto retry; -out: - posix_acl_release(acl); return error; } /* - * Extended attribute handlers + * Initialize the ACLs of a new inode. Called from ext3_new_inode. + * + * dir->i_mutex: down + * inode->i_mutex: up (access to inode is still exclusive) */ -static size_t -ext3_xattr_list_acl_access(struct dentry *dentry, char *list, size_t list_len, - const char *name, size_t name_len, int type) -{ - const size_t size = sizeof(POSIX_ACL_XATTR_ACCESS); - - if (!test_opt(dentry->d_sb, POSIX_ACL)) - return 0; - if (list && size <= list_len) - memcpy(list, POSIX_ACL_XATTR_ACCESS, size); - return size; -} - -static size_t -ext3_xattr_list_acl_default(struct dentry *dentry, char *list, size_t list_len, - const char *name, size_t name_len, int type) -{ - const size_t size = sizeof(POSIX_ACL_XATTR_DEFAULT); - - if (!test_opt(dentry->d_sb, POSIX_ACL)) - return 0; - if (list && size <= list_len) - memcpy(list, POSIX_ACL_XATTR_DEFAULT, size); - return size; -} - -static int -ext3_xattr_get_acl(struct dentry *dentry, const char *name, void *buffer, - size_t size, int type) +int +ext3_init_acl(handle_t *handle, struct inode *inode, struct inode *dir) { - struct posix_acl *acl; + struct posix_acl *default_acl, *acl; int error; - if (strcmp(name, "") != 0) - return -EINVAL; - if (!test_opt(dentry->d_sb, POSIX_ACL)) - return -EOPNOTSUPP; - - acl = ext3_get_acl(dentry->d_inode, type); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl == NULL) - return -ENODATA; - error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size); - posix_acl_release(acl); - - return error; -} - -static int -ext3_xattr_set_acl(struct dentry *dentry, const char *name, const void *value, - size_t size, int flags, int type) -{ - struct inode *inode = dentry->d_inode; - handle_t *handle; - struct posix_acl *acl; - int error, retries = 0; - - if (strcmp(name, "") != 0) - return -EINVAL; - if (!test_opt(inode->i_sb, POSIX_ACL)) - return -EOPNOTSUPP; - if (!inode_owner_or_capable(inode)) - return -EPERM; - - if (value) { - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (IS_ERR(acl)) - return PTR_ERR(acl); - else if (acl) { - error = posix_acl_valid(acl); - if (error) - goto release_and_out; - } - } else - acl = NULL; - -retry: - handle = ext3_journal_start(inode, EXT3_DATA_TRANS_BLOCKS(inode->i_sb)); - if (IS_ERR(handle)) - return PTR_ERR(handle); - error = ext3_set_acl(handle, inode, type, acl); - ext3_journal_stop(handle); - if (error == -ENOSPC && ext3_should_retry_alloc(inode->i_sb, &retries)) - goto retry; + error = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl); + if (error) + return error; -release_and_out: - posix_acl_release(acl); + if (default_acl) { + error = __ext3_set_acl(handle, inode, ACL_TYPE_DEFAULT, + default_acl); + posix_acl_release(default_acl); + } + if (acl) { + if (!error) + error = __ext3_set_acl(handle, inode, ACL_TYPE_ACCESS, + acl); + posix_acl_release(acl); + } return error; } - -const struct xattr_handler ext3_xattr_acl_access_handler = { - .prefix = POSIX_ACL_XATTR_ACCESS, - .flags = ACL_TYPE_ACCESS, - .list = ext3_xattr_list_acl_access, - .get = ext3_xattr_get_acl, - .set = ext3_xattr_set_acl, -}; - -const struct xattr_handler ext3_xattr_acl_default_handler = { - .prefix = POSIX_ACL_XATTR_DEFAULT, - .flags = ACL_TYPE_DEFAULT, - .list = ext3_xattr_list_acl_default, - .get = ext3_xattr_get_acl, - .set = ext3_xattr_set_acl, -}; diff --git a/fs/ext3/acl.h b/fs/ext3/acl.h index dbc921e458c5..ea1c69edab9e 100644 --- a/fs/ext3/acl.h +++ b/fs/ext3/acl.h @@ -55,18 +55,13 @@ static inline int ext3_acl_count(size_t size) /* acl.c */ extern struct posix_acl *ext3_get_acl(struct inode *inode, int type); -extern int ext3_acl_chmod (struct inode *); +extern int ext3_set_acl(struct inode *inode, struct posix_acl *acl, int type); extern int ext3_init_acl (handle_t *, struct inode *, struct inode *); #else /* CONFIG_EXT3_FS_POSIX_ACL */ #include <linux/sched.h> #define ext3_get_acl NULL - -static inline int -ext3_acl_chmod(struct inode *inode) -{ - return 0; -} +#define ext3_set_acl NULL static inline int ext3_init_acl(handle_t *handle, struct inode *inode, struct inode *dir) diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c index 22548f56197b..158b5d4ce067 100644 --- a/fs/ext3/balloc.c +++ b/fs/ext3/balloc.c @@ -1727,10 +1727,7 @@ allocated: percpu_counter_sub(&sbi->s_freeblocks_counter, num); BUFFER_TRACE(gdp_bh, "journal_dirty_metadata for group descriptor"); - err = ext3_journal_dirty_metadata(handle, gdp_bh); - if (!fatal) - fatal = err; - + fatal = ext3_journal_dirty_metadata(handle, gdp_bh); if (fatal) goto out; diff --git a/fs/ext3/dir.c b/fs/ext3/dir.c index bafdd48eefde..17742eed2c16 100644 --- a/fs/ext3/dir.c +++ b/fs/ext3/dir.c @@ -275,7 +275,7 @@ static inline loff_t ext3_get_htree_eof(struct file *filp) * NOTE: offsets obtained *before* ext3_set_inode_flag(dir, EXT3_INODE_INDEX) * will be invalid once the directory was converted into a dx directory */ -loff_t ext3_dir_llseek(struct file *file, loff_t offset, int whence) +static loff_t ext3_dir_llseek(struct file *file, loff_t offset, int whence) { struct inode *inode = file->f_mapping->host; int dx_dir = is_dx_dir(inode); @@ -309,43 +309,17 @@ struct fname { */ static void free_rb_tree_fname(struct rb_root *root) { - struct rb_node *n = root->rb_node; - struct rb_node *parent; - struct fname *fname; - - while (n) { - /* Do the node's children first */ - if (n->rb_left) { - n = n->rb_left; - continue; - } - if (n->rb_right) { - n = n->rb_right; - continue; - } - /* - * The node has no children; free it, and then zero - * out parent's link to it. Finally go to the - * beginning of the loop and try to free the parent - * node. - */ - parent = rb_parent(n); - fname = rb_entry(n, struct fname, rb_hash); - while (fname) { - struct fname * old = fname; + struct fname *fname, *next; + + rbtree_postorder_for_each_entry_safe(fname, next, root, rb_hash) + do { + struct fname *old = fname; fname = fname->next; - kfree (old); - } - if (!parent) - *root = RB_ROOT; - else if (parent->rb_left == n) - parent->rb_left = NULL; - else if (parent->rb_right == n) - parent->rb_right = NULL; - n = parent; - } -} + kfree(old); + } while (fname); + *root = RB_ROOT; +} static struct dir_private_info *ext3_htree_create_dir_info(struct file *filp, loff_t pos) diff --git a/fs/ext3/file.c b/fs/ext3/file.c index 25cb413277e9..aad05311392a 100644 --- a/fs/ext3/file.c +++ b/fs/ext3/file.c @@ -75,6 +75,7 @@ const struct inode_operations ext3_file_inode_operations = { .removexattr = generic_removexattr, #endif .get_acl = ext3_get_acl, + .set_acl = ext3_set_acl, .fiemap = ext3_fiemap, }; diff --git a/fs/ext3/ialloc.c b/fs/ext3/ialloc.c index 082afd78b107..a1b810230cc5 100644 --- a/fs/ext3/ialloc.c +++ b/fs/ext3/ialloc.c @@ -215,7 +215,7 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent) int best_ndir = inodes_per_group; int best_group = -1; - get_random_bytes(&group, sizeof(group)); + group = prandom_u32(); parent_group = (unsigned)group % ngroups; for (i = 0; i < ngroups; i++) { group = (parent_group + i) % ngroups; diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c index 2bd85486b879..f5157d0d1b43 100644 --- a/fs/ext3/inode.c +++ b/fs/ext3/inode.c @@ -228,7 +228,7 @@ void ext3_evict_inode (struct inode *inode) log_wait_commit(journal, commit_tid); filemap_write_and_wait(&inode->i_data); } - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); ext3_discard_reservation(inode); rsv = ei->i_block_alloc_info; @@ -1559,56 +1559,17 @@ static int buffer_unmapped(handle_t *handle, struct buffer_head *bh) } /* - * Note that we always start a transaction even if we're not journalling - * data. This is to preserve ordering: any hole instantiation within - * __block_write_full_page -> ext3_get_block() should be journalled - * along with the data so we don't crash and then get metadata which + * Note that whenever we need to map blocks we start a transaction even if + * we're not journalling data. This is to preserve ordering: any hole + * instantiation within __block_write_full_page -> ext3_get_block() should be + * journalled along with the data so we don't crash and then get metadata which * refers to old data. * * In all journalling modes block_write_full_page() will start the I/O. * - * Problem: - * - * ext3_writepage() -> kmalloc() -> __alloc_pages() -> page_launder() -> - * ext3_writepage() - * - * Similar for: - * - * ext3_file_write() -> generic_file_write() -> __alloc_pages() -> ... - * - * Same applies to ext3_get_block(). We will deadlock on various things like - * lock_journal and i_truncate_mutex. - * - * Setting PF_MEMALLOC here doesn't work - too many internal memory - * allocations fail. - * - * 16May01: If we're reentered then journal_current_handle() will be - * non-zero. We simply *return*. - * - * 1 July 2001: @@@ FIXME: - * In journalled data mode, a data buffer may be metadata against the - * current transaction. But the same file is part of a shared mapping - * and someone does a writepage() on it. - * - * We will move the buffer onto the async_data list, but *after* it has - * been dirtied. So there's a small window where we have dirty data on - * BJ_Metadata. - * - * Note that this only applies to the last partial page in the file. The - * bit which block_write_full_page() uses prepare/commit for. (That's - * broken code anyway: it's wrong for msync()). - * - * It's a rare case: affects the final partial page, for journalled data - * where the file is subject to bith write() and writepage() in the same - * transction. To fix it we'll need a custom block_write_full_page(). - * We'll probably need that anyway for journalling writepage() output. - * * We don't honour synchronous mounts for writepage(). That would be * disastrous. Any write() or metadata operation will sync the fs for * us. - * - * AKPM2: if all the page's buffers are mapped to disk and !data=journal, - * we don't need to open a transaction here. */ static int ext3_ordered_writepage(struct page *page, struct writeback_control *wbc) @@ -1673,12 +1634,9 @@ static int ext3_ordered_writepage(struct page *page, * block_write_full_page() succeeded. Otherwise they are unmapped, * and generally junk. */ - if (ret == 0) { - err = walk_page_buffers(handle, page_bufs, 0, PAGE_CACHE_SIZE, + if (ret == 0) + ret = walk_page_buffers(handle, page_bufs, 0, PAGE_CACHE_SIZE, NULL, journal_dirty_data_fn); - if (!ret) - ret = err; - } walk_page_buffers(handle, page_bufs, 0, PAGE_CACHE_SIZE, NULL, bput_one); err = ext3_journal_stop(handle); @@ -1925,6 +1883,8 @@ retry: * and pretend the write failed... */ ext3_truncate_failed_direct_write(inode); ret = PTR_ERR(handle); + if (inode->i_nlink) + ext3_orphan_del(NULL, inode); goto out; } if (inode->i_nlink) @@ -3212,21 +3172,20 @@ out_brelse: * * We are called from a few places: * - * - Within generic_file_write() for O_SYNC files. + * - Within generic_file_aio_write() -> generic_write_sync() for O_SYNC files. * Here, there will be no transaction running. We wait for any running * transaction to commit. * - * - Within sys_sync(), kupdate and such. - * We wait on commit, if tol to. + * - Within flush work (for sys_sync(), kupdate and such). + * We wait on commit, if told to. * - * - Within prune_icache() (PF_MEMALLOC == true) - * Here we simply return. We can't afford to block kswapd on the - * journal commit. + * - Within iput_final() -> write_inode_now() + * We wait on commit, if told to. * * In all cases it is actually safe for us to return without doing anything, * because the inode has been copied into a raw inode buffer in - * ext3_mark_inode_dirty(). This is a correctness thing for O_SYNC and for - * knfsd. + * ext3_mark_inode_dirty(). This is a correctness thing for WB_SYNC_ALL + * writeback. * * Note that we are absolutely dependent upon all inode dirtiers doing the * right thing: they *must* call mark_inode_dirty() after dirtying info in @@ -3238,13 +3197,13 @@ out_brelse: * stuff(); * inode->i_size = expr; * - * is in error because a kswapd-driven write_inode() could occur while - * `stuff()' is running, and the new i_size will be lost. Plus the inode - * will no longer be on the superblock's dirty inode list. + * is in error because write_inode() could occur while `stuff()' is running, + * and the new i_size will be lost. Plus the inode will no longer be on the + * superblock's dirty inode list. */ int ext3_write_inode(struct inode *inode, struct writeback_control *wbc) { - if (current->flags & PF_MEMALLOC) + if (WARN_ON_ONCE(current->flags & PF_MEMALLOC)) return 0; if (ext3_journal_current_handle()) { @@ -3253,7 +3212,12 @@ int ext3_write_inode(struct inode *inode, struct writeback_control *wbc) return -EIO; } - if (wbc->sync_mode != WB_SYNC_ALL) + /* + * No need to force transaction in WB_SYNC_NONE mode. Also + * ext3_sync_fs() will force the commit after everything is + * written. + */ + if (wbc->sync_mode != WB_SYNC_ALL || wbc->for_sync) return 0; return ext3_force_commit(inode->i_sb); @@ -3365,7 +3329,7 @@ int ext3_setattr(struct dentry *dentry, struct iattr *attr) mark_inode_dirty(inode); if (ia_valid & ATTR_MODE) - rc = ext3_acl_chmod(inode); + rc = posix_acl_chmod(inode, inode->i_mode); err_out: ext3_std_error(inode->i_sb, error); diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c index f8cde46de9cd..f197736dccfa 100644 --- a/fs/ext3/namei.c +++ b/fs/ext3/namei.c @@ -2569,6 +2569,7 @@ const struct inode_operations ext3_dir_inode_operations = { .removexattr = generic_removexattr, #endif .get_acl = ext3_get_acl, + .set_acl = ext3_set_acl, }; const struct inode_operations ext3_special_inode_operations = { @@ -2580,4 +2581,5 @@ const struct inode_operations ext3_special_inode_operations = { .removexattr = generic_removexattr, #endif .get_acl = ext3_get_acl, + .set_acl = ext3_set_acl, }; diff --git a/fs/ext3/super.c b/fs/ext3/super.c index 37fd31ed16e7..08cdfe5461e3 100644 --- a/fs/ext3/super.c +++ b/fs/ext3/super.c @@ -527,7 +527,7 @@ static void init_once(void *foo) inode_init_once(&ei->vfs_inode); } -static int init_inodecache(void) +static int __init init_inodecache(void) { ext3_inode_cachep = kmem_cache_create("ext3_inode_cache", sizeof(struct ext3_inode_info), @@ -2649,6 +2649,8 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data) int i; #endif + sync_filesystem(sb); + /* Store the original options */ old_sb_flags = sb->s_flags; old_opts.s_mount_opt = sbi->s_mount_opt; diff --git a/fs/ext3/xattr.c b/fs/ext3/xattr.c index b1fc96383e08..c6874be6d58b 100644 --- a/fs/ext3/xattr.c +++ b/fs/ext3/xattr.c @@ -102,8 +102,8 @@ static struct mb_cache *ext3_xattr_cache; static const struct xattr_handler *ext3_xattr_handler_map[] = { [EXT3_XATTR_INDEX_USER] = &ext3_xattr_user_handler, #ifdef CONFIG_EXT3_FS_POSIX_ACL - [EXT3_XATTR_INDEX_POSIX_ACL_ACCESS] = &ext3_xattr_acl_access_handler, - [EXT3_XATTR_INDEX_POSIX_ACL_DEFAULT] = &ext3_xattr_acl_default_handler, + [EXT3_XATTR_INDEX_POSIX_ACL_ACCESS] = &posix_acl_access_xattr_handler, + [EXT3_XATTR_INDEX_POSIX_ACL_DEFAULT] = &posix_acl_default_xattr_handler, #endif [EXT3_XATTR_INDEX_TRUSTED] = &ext3_xattr_trusted_handler, #ifdef CONFIG_EXT3_FS_SECURITY @@ -115,8 +115,8 @@ const struct xattr_handler *ext3_xattr_handlers[] = { &ext3_xattr_user_handler, &ext3_xattr_trusted_handler, #ifdef CONFIG_EXT3_FS_POSIX_ACL - &ext3_xattr_acl_access_handler, - &ext3_xattr_acl_default_handler, + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, #endif #ifdef CONFIG_EXT3_FS_SECURITY &ext3_xattr_security_handler, diff --git a/fs/ext3/xattr.h b/fs/ext3/xattr.h index 2be4f69bfa64..32e93ebf8031 100644 --- a/fs/ext3/xattr.h +++ b/fs/ext3/xattr.h @@ -60,8 +60,6 @@ struct ext3_xattr_entry { extern const struct xattr_handler ext3_xattr_user_handler; extern const struct xattr_handler ext3_xattr_trusted_handler; -extern const struct xattr_handler ext3_xattr_acl_access_handler; -extern const struct xattr_handler ext3_xattr_acl_default_handler; extern const struct xattr_handler ext3_xattr_security_handler; extern ssize_t ext3_listxattr(struct dentry *, char *, size_t); diff --git a/fs/ext3/xattr_security.c b/fs/ext3/xattr_security.c index 3387664ad70e..722c2bf9645d 100644 --- a/fs/ext3/xattr_security.c +++ b/fs/ext3/xattr_security.c @@ -43,8 +43,9 @@ ext3_xattr_security_set(struct dentry *dentry, const char *name, name, value, size, flags); } -int ext3_initxattrs(struct inode *inode, const struct xattr *xattr_array, - void *fs_info) +static int ext3_initxattrs(struct inode *inode, + const struct xattr *xattr_array, + void *fs_info) { const struct xattr *xattr; handle_t *handle = fs_info; diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c index 39a54a0e9fe4..d40c8dbbb0d6 100644 --- a/fs/ext4/acl.c +++ b/fs/ext4/acl.c @@ -152,13 +152,6 @@ ext4_get_acl(struct inode *inode, int type) struct posix_acl *acl; int retval; - if (!test_opt(inode->i_sb, POSIX_ACL)) - return NULL; - - acl = get_cached_acl(inode, type); - if (acl != ACL_NOT_CACHED) - return acl; - switch (type) { case ACL_TYPE_ACCESS: name_index = EXT4_XATTR_INDEX_POSIX_ACL_ACCESS; @@ -196,7 +189,7 @@ ext4_get_acl(struct inode *inode, int type) * inode->i_mutex: down unless called from ext4_new_inode */ static int -ext4_set_acl(handle_t *handle, struct inode *inode, int type, +__ext4_set_acl(handle_t *handle, struct inode *inode, int type, struct posix_acl *acl) { int name_index; @@ -204,9 +197,6 @@ ext4_set_acl(handle_t *handle, struct inode *inode, int type, size_t size = 0; int error; - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - switch (type) { case ACL_TYPE_ACCESS: name_index = EXT4_XATTR_INDEX_POSIX_ACL_ACCESS; @@ -248,208 +238,51 @@ ext4_set_acl(handle_t *handle, struct inode *inode, int type, return error; } -/* - * Initialize the ACLs of a new inode. Called from ext4_new_inode. - * - * dir->i_mutex: down - * inode->i_mutex: up (access to inode is still exclusive) - */ int -ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir) +ext4_set_acl(struct inode *inode, struct posix_acl *acl, int type) { - struct posix_acl *acl = NULL; - int error = 0; - - if (!S_ISLNK(inode->i_mode)) { - if (test_opt(dir->i_sb, POSIX_ACL)) { - acl = ext4_get_acl(dir, ACL_TYPE_DEFAULT); - if (IS_ERR(acl)) - return PTR_ERR(acl); - } - if (!acl) - inode->i_mode &= ~current_umask(); - } - if (test_opt(inode->i_sb, POSIX_ACL) && acl) { - if (S_ISDIR(inode->i_mode)) { - error = ext4_set_acl(handle, inode, - ACL_TYPE_DEFAULT, acl); - if (error) - goto cleanup; - } - error = posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); - if (error < 0) - return error; - - if (error > 0) { - /* This is an extended ACL */ - error = ext4_set_acl(handle, inode, ACL_TYPE_ACCESS, acl); - } - } -cleanup: - posix_acl_release(acl); - return error; -} - -/* - * Does chmod for an inode that may have an Access Control List. The - * inode->i_mode field must be updated to the desired value by the caller - * before calling this function. - * Returns 0 on success, or a negative error number. - * - * We change the ACL rather than storing some ACL entries in the file - * mode permission bits (which would be more efficient), because that - * would break once additional permissions (like ACL_APPEND, ACL_DELETE - * for directories) are added. There are no more bits available in the - * file mode. - * - * inode->i_mutex: down - */ -int -ext4_acl_chmod(struct inode *inode) -{ - struct posix_acl *acl; handle_t *handle; - int retries = 0; - int error; - + int error, retries = 0; - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - if (!test_opt(inode->i_sb, POSIX_ACL)) - return 0; - acl = ext4_get_acl(inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl) || !acl) - return PTR_ERR(acl); - error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); - if (error) - return error; retry: handle = ext4_journal_start(inode, EXT4_HT_XATTR, ext4_jbd2_credits_xattr(inode)); - if (IS_ERR(handle)) { - error = PTR_ERR(handle); - ext4_std_error(inode->i_sb, error); - goto out; - } - error = ext4_set_acl(handle, inode, ACL_TYPE_ACCESS, acl); + if (IS_ERR(handle)) + return PTR_ERR(handle); + + error = __ext4_set_acl(handle, inode, type, acl); ext4_journal_stop(handle); - if (error == -ENOSPC && - ext4_should_retry_alloc(inode->i_sb, &retries)) + if (error == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries)) goto retry; -out: - posix_acl_release(acl); return error; } /* - * Extended attribute handlers + * Initialize the ACLs of a new inode. Called from ext4_new_inode. + * + * dir->i_mutex: down + * inode->i_mutex: up (access to inode is still exclusive) */ -static size_t -ext4_xattr_list_acl_access(struct dentry *dentry, char *list, size_t list_len, - const char *name, size_t name_len, int type) -{ - const size_t size = sizeof(POSIX_ACL_XATTR_ACCESS); - - if (!test_opt(dentry->d_sb, POSIX_ACL)) - return 0; - if (list && size <= list_len) - memcpy(list, POSIX_ACL_XATTR_ACCESS, size); - return size; -} - -static size_t -ext4_xattr_list_acl_default(struct dentry *dentry, char *list, size_t list_len, - const char *name, size_t name_len, int type) -{ - const size_t size = sizeof(POSIX_ACL_XATTR_DEFAULT); - - if (!test_opt(dentry->d_sb, POSIX_ACL)) - return 0; - if (list && size <= list_len) - memcpy(list, POSIX_ACL_XATTR_DEFAULT, size); - return size; -} - -static int -ext4_xattr_get_acl(struct dentry *dentry, const char *name, void *buffer, - size_t size, int type) +int +ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir) { - struct posix_acl *acl; + struct posix_acl *default_acl, *acl; int error; - if (strcmp(name, "") != 0) - return -EINVAL; - if (!test_opt(dentry->d_sb, POSIX_ACL)) - return -EOPNOTSUPP; - - acl = ext4_get_acl(dentry->d_inode, type); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl == NULL) - return -ENODATA; - error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size); - posix_acl_release(acl); - - return error; -} - -static int -ext4_xattr_set_acl(struct dentry *dentry, const char *name, const void *value, - size_t size, int flags, int type) -{ - struct inode *inode = dentry->d_inode; - handle_t *handle; - struct posix_acl *acl; - int error, retries = 0; - - if (strcmp(name, "") != 0) - return -EINVAL; - if (!test_opt(inode->i_sb, POSIX_ACL)) - return -EOPNOTSUPP; - if (!inode_owner_or_capable(inode)) - return -EPERM; - - if (value) { - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (IS_ERR(acl)) - return PTR_ERR(acl); - else if (acl) { - error = posix_acl_valid(acl); - if (error) - goto release_and_out; - } - } else - acl = NULL; + error = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl); + if (error) + return error; -retry: - handle = ext4_journal_start(inode, EXT4_HT_XATTR, - ext4_jbd2_credits_xattr(inode)); - if (IS_ERR(handle)) { - error = PTR_ERR(handle); - goto release_and_out; + if (default_acl) { + error = __ext4_set_acl(handle, inode, ACL_TYPE_DEFAULT, + default_acl); + posix_acl_release(default_acl); + } + if (acl) { + if (!error) + error = __ext4_set_acl(handle, inode, ACL_TYPE_ACCESS, + acl); + posix_acl_release(acl); } - error = ext4_set_acl(handle, inode, type, acl); - ext4_journal_stop(handle); - if (error == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries)) - goto retry; - -release_and_out: - posix_acl_release(acl); return error; } - -const struct xattr_handler ext4_xattr_acl_access_handler = { - .prefix = POSIX_ACL_XATTR_ACCESS, - .flags = ACL_TYPE_ACCESS, - .list = ext4_xattr_list_acl_access, - .get = ext4_xattr_get_acl, - .set = ext4_xattr_set_acl, -}; - -const struct xattr_handler ext4_xattr_acl_default_handler = { - .prefix = POSIX_ACL_XATTR_DEFAULT, - .flags = ACL_TYPE_DEFAULT, - .list = ext4_xattr_list_acl_default, - .get = ext4_xattr_get_acl, - .set = ext4_xattr_set_acl, -}; diff --git a/fs/ext4/acl.h b/fs/ext4/acl.h index 18cb39ed7c7b..da2c79577d72 100644 --- a/fs/ext4/acl.h +++ b/fs/ext4/acl.h @@ -55,18 +55,13 @@ static inline int ext4_acl_count(size_t size) /* acl.c */ struct posix_acl *ext4_get_acl(struct inode *inode, int type); -extern int ext4_acl_chmod(struct inode *); +int ext4_set_acl(struct inode *inode, struct posix_acl *acl, int type); extern int ext4_init_acl(handle_t *, struct inode *, struct inode *); #else /* CONFIG_EXT4_FS_POSIX_ACL */ #include <linux/sched.h> #define ext4_get_acl NULL - -static inline int -ext4_acl_chmod(struct inode *inode) -{ - return 0; -} +#define ext4_set_acl NULL static inline int ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir) diff --git a/fs/ext4/block_validity.c b/fs/ext4/block_validity.c index 3f11656bd72e..41eb9dcfac7e 100644 --- a/fs/ext4/block_validity.c +++ b/fs/ext4/block_validity.c @@ -180,37 +180,12 @@ int ext4_setup_system_zone(struct super_block *sb) /* Called when the filesystem is unmounted */ void ext4_release_system_zone(struct super_block *sb) { - struct rb_node *n = EXT4_SB(sb)->system_blks.rb_node; - struct rb_node *parent; - struct ext4_system_zone *entry; + struct ext4_system_zone *entry, *n; - while (n) { - /* Do the node's children first */ - if (n->rb_left) { - n = n->rb_left; - continue; - } - if (n->rb_right) { - n = n->rb_right; - continue; - } - /* - * The node has no children; free it, and then zero - * out parent's link to it. Finally go to the - * beginning of the loop and try to free the parent - * node. - */ - parent = rb_parent(n); - entry = rb_entry(n, struct ext4_system_zone, node); + rbtree_postorder_for_each_entry_safe(entry, n, + &EXT4_SB(sb)->system_blks, node) kmem_cache_free(ext4_system_zone_cachep, entry); - if (!parent) - EXT4_SB(sb)->system_blks = RB_ROOT; - else if (parent->rb_left == n) - parent->rb_left = NULL; - else if (parent->rb_right == n) - parent->rb_right = NULL; - n = parent; - } + EXT4_SB(sb)->system_blks = RB_ROOT; } diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c index 680bb3388919..d638c57e996e 100644 --- a/fs/ext4/dir.c +++ b/fs/ext4/dir.c @@ -353,41 +353,16 @@ struct fname { */ static void free_rb_tree_fname(struct rb_root *root) { - struct rb_node *n = root->rb_node; - struct rb_node *parent; - struct fname *fname; - - while (n) { - /* Do the node's children first */ - if (n->rb_left) { - n = n->rb_left; - continue; - } - if (n->rb_right) { - n = n->rb_right; - continue; - } - /* - * The node has no children; free it, and then zero - * out parent's link to it. Finally go to the - * beginning of the loop and try to free the parent - * node. - */ - parent = rb_parent(n); - fname = rb_entry(n, struct fname, rb_hash); + struct fname *fname, *next; + + rbtree_postorder_for_each_entry_safe(fname, next, root, rb_hash) while (fname) { struct fname *old = fname; fname = fname->next; kfree(old); } - if (!parent) - *root = RB_ROOT; - else if (parent->rb_left == n) - parent->rb_left = NULL; - else if (parent->rb_right == n) - parent->rb_right = NULL; - n = parent; - } + + *root = RB_ROOT; } diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index ece55565b9cd..f1c65dc7cc0a 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -31,6 +31,7 @@ #include <linux/percpu_counter.h> #include <linux/ratelimit.h> #include <crypto/hash.h> +#include <linux/falloc.h> #ifdef __KERNEL__ #include <linux/compat.h> #endif @@ -567,6 +568,8 @@ enum { #define EXT4_GET_BLOCKS_NO_LOCK 0x0100 /* Do not put hole in extent cache */ #define EXT4_GET_BLOCKS_NO_PUT_HOLE 0x0200 + /* Convert written extents to unwritten */ +#define EXT4_GET_BLOCKS_CONVERT_UNWRITTEN 0x0400 /* * The bit position of these flags must not overlap with any of the @@ -771,6 +774,8 @@ do { \ if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime)) \ (einode)->xtime.tv_sec = \ (signed)le32_to_cpu((raw_inode)->xtime); \ + else \ + (einode)->xtime.tv_sec = 0; \ if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime ## _extra)) \ ext4_decode_extra_time(&(einode)->xtime, \ raw_inode->xtime ## _extra); \ @@ -996,6 +1001,8 @@ struct ext4_inode_info { #define EXT4_MOUNT2_STD_GROUP_SIZE 0x00000002 /* We have standard group size of blocksize * 8 blocks */ +#define EXT4_MOUNT2_HURD_COMPAT 0x00000004 /* Support HURD-castrated + file systems */ #define clear_opt(sb, opt) EXT4_SB(sb)->s_mount_opt &= \ ~EXT4_MOUNT_##opt @@ -1324,6 +1331,7 @@ struct ext4_sb_info { struct list_head s_es_lru; unsigned long s_es_last_sorted; struct percpu_counter s_extent_cache_cnt; + struct mb_cache *s_mb_cache; spinlock_t s_es_lru_lock ____cacheline_aligned_in_smp; /* Ratelimit ext4 messages. */ @@ -2131,8 +2139,6 @@ extern int ext4_writepage_trans_blocks(struct inode *); extern int ext4_chunk_trans_blocks(struct inode *, int nrblocks); extern int ext4_block_truncate_page(handle_t *handle, struct address_space *mapping, loff_t from); -extern int ext4_block_zero_page_range(handle_t *handle, - struct address_space *mapping, loff_t from, loff_t length); extern int ext4_zero_partial_blocks(handle_t *handle, struct inode *inode, loff_t lstart, loff_t lend); extern int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); @@ -2755,6 +2761,7 @@ extern int ext4_find_delalloc_cluster(struct inode *inode, ext4_lblk_t lblk); extern int ext4_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, __u64 start, __u64 len); extern int ext4_ext_precache(struct inode *inode); +extern int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len); /* move_extent.c */ extern void ext4_double_down_write_data_sem(struct inode *first, @@ -2764,6 +2771,8 @@ extern void ext4_double_up_write_data_sem(struct inode *orig_inode, extern int ext4_move_extents(struct file *o_filp, struct file *d_filp, __u64 start_orig, __u64 start_donor, __u64 len, __u64 *moved_len); +extern int mext_next_extent(struct inode *inode, struct ext4_ext_path *path, + struct ext4_extent **extent); /* page-io.c */ extern int __init ext4_init_pageio(void); diff --git a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c index 3fe29de832c8..c3fb607413ed 100644 --- a/fs/ext4/ext4_jbd2.c +++ b/fs/ext4/ext4_jbd2.c @@ -259,6 +259,16 @@ int __ext4_handle_dirty_metadata(const char *where, unsigned int line, if (WARN_ON_ONCE(err)) { ext4_journal_abort_handle(where, line, __func__, bh, handle, err); + if (inode == NULL) { + pr_err("EXT4: jbd2_journal_dirty_metadata " + "failed: handle type %u started at " + "line %u, credits %u/%u, errcode %d", + handle->h_type, + handle->h_line_no, + handle->h_requested_credits, + handle->h_buffer_credits, err); + return err; + } ext4_error_inode(inode, where, line, bh->b_blocknr, "journal_dirty_metadata failed: " diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 3384dc4bed40..82df3ce9874a 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -37,7 +37,6 @@ #include <linux/quotaops.h> #include <linux/string.h> #include <linux/slab.h> -#include <linux/falloc.h> #include <asm/uaccess.h> #include <linux/fiemap.h> #include "ext4_jbd2.h" @@ -1691,7 +1690,7 @@ ext4_can_extents_be_merged(struct inode *inode, struct ext4_extent *ex1, * the extent that was written properly split out and conversion to * initialized is trivial. */ - if (ext4_ext_is_uninitialized(ex1) || ext4_ext_is_uninitialized(ex2)) + if (ext4_ext_is_uninitialized(ex1) != ext4_ext_is_uninitialized(ex2)) return 0; ext1_ee_len = ext4_ext_get_actual_len(ex1); @@ -1708,6 +1707,11 @@ ext4_can_extents_be_merged(struct inode *inode, struct ext4_extent *ex1, */ if (ext1_ee_len + ext2_ee_len > EXT_INIT_MAX_LEN) return 0; + if (ext4_ext_is_uninitialized(ex1) && + (ext4_test_inode_state(inode, EXT4_STATE_DIO_UNWRITTEN) || + atomic_read(&EXT4_I(inode)->i_unwritten) || + (ext1_ee_len + ext2_ee_len > EXT_UNINIT_MAX_LEN))) + return 0; #ifdef AGGRESSIVE_TEST if (ext1_ee_len >= 4) return 0; @@ -1731,7 +1735,7 @@ static int ext4_ext_try_to_merge_right(struct inode *inode, { struct ext4_extent_header *eh; unsigned int depth, len; - int merge_done = 0; + int merge_done = 0, uninit; depth = ext_depth(inode); BUG_ON(path[depth].p_hdr == NULL); @@ -1741,8 +1745,11 @@ static int ext4_ext_try_to_merge_right(struct inode *inode, if (!ext4_can_extents_be_merged(inode, ex, ex + 1)) break; /* merge with next extent! */ + uninit = ext4_ext_is_uninitialized(ex); ex->ee_len = cpu_to_le16(ext4_ext_get_actual_len(ex) + ext4_ext_get_actual_len(ex + 1)); + if (uninit) + ext4_ext_mark_uninitialized(ex); if (ex + 1 < EXT_LAST_EXTENT(eh)) { len = (EXT_LAST_EXTENT(eh) - ex - 1) @@ -1896,7 +1903,7 @@ int ext4_ext_insert_extent(handle_t *handle, struct inode *inode, struct ext4_ext_path *npath = NULL; int depth, len, err; ext4_lblk_t next; - int mb_flags = 0; + int mb_flags = 0, uninit; if (unlikely(ext4_ext_get_actual_len(newext) == 0)) { EXT4_ERROR_INODE(inode, "ext4_ext_get_actual_len(newext) == 0"); @@ -1946,9 +1953,11 @@ int ext4_ext_insert_extent(handle_t *handle, struct inode *inode, path + depth); if (err) return err; - + uninit = ext4_ext_is_uninitialized(ex); ex->ee_len = cpu_to_le16(ext4_ext_get_actual_len(ex) + ext4_ext_get_actual_len(newext)); + if (uninit) + ext4_ext_mark_uninitialized(ex); eh = path[depth].p_hdr; nearex = ex; goto merge; @@ -1971,10 +1980,13 @@ prepend: if (err) return err; + uninit = ext4_ext_is_uninitialized(ex); ex->ee_block = newext->ee_block; ext4_ext_store_pblock(ex, ext4_ext_pblock(newext)); ex->ee_len = cpu_to_le16(ext4_ext_get_actual_len(ex) + ext4_ext_get_actual_len(newext)); + if (uninit) + ext4_ext_mark_uninitialized(ex); eh = path[depth].p_hdr; nearex = ex; goto merge; @@ -2585,6 +2597,27 @@ ext4_ext_rm_leaf(handle_t *handle, struct inode *inode, ex_ee_block = le32_to_cpu(ex->ee_block); ex_ee_len = ext4_ext_get_actual_len(ex); + /* + * If we're starting with an extent other than the last one in the + * node, we need to see if it shares a cluster with the extent to + * the right (towards the end of the file). If its leftmost cluster + * is this extent's rightmost cluster and it is not cluster aligned, + * we'll mark it as a partial that is not to be deallocated. + */ + + if (ex != EXT_LAST_EXTENT(eh)) { + ext4_fsblk_t current_pblk, right_pblk; + long long current_cluster, right_cluster; + + current_pblk = ext4_ext_pblock(ex) + ex_ee_len - 1; + current_cluster = (long long)EXT4_B2C(sbi, current_pblk); + right_pblk = ext4_ext_pblock(ex + 1); + right_cluster = (long long)EXT4_B2C(sbi, right_pblk); + if (current_cluster == right_cluster && + EXT4_PBLK_COFF(sbi, right_pblk)) + *partial_cluster = -right_cluster; + } + trace_ext4_ext_rm_leaf(inode, start, ex, *partial_cluster); while (ex >= EXT_FIRST_EXTENT(eh) && @@ -2710,10 +2743,15 @@ ext4_ext_rm_leaf(handle_t *handle, struct inode *inode, err = ext4_ext_correct_indexes(handle, inode, path); /* - * Free the partial cluster only if the current extent does not - * reference it. Otherwise we might free used cluster. + * If there's a partial cluster and at least one extent remains in + * the leaf, free the partial cluster if it isn't shared with the + * current extent. If there's a partial cluster and no extents + * remain in the leaf, it can't be freed here. It can only be + * freed when it's possible to determine if it's not shared with + * any other extent - when the next leaf is processed or when space + * removal is complete. */ - if (*partial_cluster > 0 && + if (*partial_cluster > 0 && eh->eh_entries && (EXT4_B2C(sbi, ext4_ext_pblock(ex) + ex_ee_len - 1) != *partial_cluster)) { int flags = get_default_free_blocks_flags(inode); @@ -3477,7 +3515,7 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, WARN_ON(map->m_lblk < ee_block); /* * It is safe to convert extent to initialized via explicit - * zeroout only if extent is fully insde i_size or new_size. + * zeroout only if extent is fully inside i_size or new_size. */ split_flag |= ee_block + ee_len <= eof_block ? EXT4_EXT_MAY_ZEROOUT : 0; @@ -3569,6 +3607,8 @@ out: * b> Splits in two extents: Write is happening at either end of the extent * c> Splits in three extents: Somone is writing in middle of the extent * + * This works the same way in the case of initialized -> unwritten conversion. + * * One of more index blocks maybe needed if the extent tree grow after * the uninitialized extent split. To prevent ENOSPC occur at the IO * complete, we need to split the uninitialized extent before DIO submit @@ -3579,7 +3619,7 @@ out: * * Returns the size of uninitialized extent to be written on success. */ -static int ext4_split_unwritten_extents(handle_t *handle, +static int ext4_split_convert_extents(handle_t *handle, struct inode *inode, struct ext4_map_blocks *map, struct ext4_ext_path *path, @@ -3591,9 +3631,9 @@ static int ext4_split_unwritten_extents(handle_t *handle, unsigned int ee_len; int split_flag = 0, depth; - ext_debug("ext4_split_unwritten_extents: inode %lu, logical" - "block %llu, max_blocks %u\n", inode->i_ino, - (unsigned long long)map->m_lblk, map->m_len); + ext_debug("%s: inode %lu, logical block %llu, max_blocks %u\n", + __func__, inode->i_ino, + (unsigned long long)map->m_lblk, map->m_len); eof_block = (inode->i_size + inode->i_sb->s_blocksize - 1) >> inode->i_sb->s_blocksize_bits; @@ -3608,14 +3648,73 @@ static int ext4_split_unwritten_extents(handle_t *handle, ee_block = le32_to_cpu(ex->ee_block); ee_len = ext4_ext_get_actual_len(ex); - split_flag |= ee_block + ee_len <= eof_block ? EXT4_EXT_MAY_ZEROOUT : 0; - split_flag |= EXT4_EXT_MARK_UNINIT2; - if (flags & EXT4_GET_BLOCKS_CONVERT) - split_flag |= EXT4_EXT_DATA_VALID2; + /* Convert to unwritten */ + if (flags & EXT4_GET_BLOCKS_CONVERT_UNWRITTEN) { + split_flag |= EXT4_EXT_DATA_VALID1; + /* Convert to initialized */ + } else if (flags & EXT4_GET_BLOCKS_CONVERT) { + split_flag |= ee_block + ee_len <= eof_block ? + EXT4_EXT_MAY_ZEROOUT : 0; + split_flag |= (EXT4_EXT_MARK_UNINIT2 | EXT4_EXT_DATA_VALID2); + } flags |= EXT4_GET_BLOCKS_PRE_IO; return ext4_split_extent(handle, inode, path, map, split_flag, flags); } +static int ext4_convert_initialized_extents(handle_t *handle, + struct inode *inode, + struct ext4_map_blocks *map, + struct ext4_ext_path *path) +{ + struct ext4_extent *ex; + ext4_lblk_t ee_block; + unsigned int ee_len; + int depth; + int err = 0; + + depth = ext_depth(inode); + ex = path[depth].p_ext; + ee_block = le32_to_cpu(ex->ee_block); + ee_len = ext4_ext_get_actual_len(ex); + + ext_debug("%s: inode %lu, logical" + "block %llu, max_blocks %u\n", __func__, inode->i_ino, + (unsigned long long)ee_block, ee_len); + + if (ee_block != map->m_lblk || ee_len > map->m_len) { + err = ext4_split_convert_extents(handle, inode, map, path, + EXT4_GET_BLOCKS_CONVERT_UNWRITTEN); + if (err < 0) + goto out; + ext4_ext_drop_refs(path); + path = ext4_ext_find_extent(inode, map->m_lblk, path, 0); + if (IS_ERR(path)) { + err = PTR_ERR(path); + goto out; + } + depth = ext_depth(inode); + ex = path[depth].p_ext; + } + + err = ext4_ext_get_access(handle, inode, path + depth); + if (err) + goto out; + /* first mark the extent as uninitialized */ + ext4_ext_mark_uninitialized(ex); + + /* note: ext4_ext_correct_indexes() isn't needed here because + * borders are not changed + */ + ext4_ext_try_to_merge(handle, inode, path, ex); + + /* Mark modified extent as dirty */ + err = ext4_ext_dirty(handle, inode, path + path->p_depth); +out: + ext4_ext_show_leaf(inode, path); + return err; +} + + static int ext4_convert_unwritten_extents_endio(handle_t *handle, struct inode *inode, struct ext4_map_blocks *map, @@ -3649,8 +3748,8 @@ static int ext4_convert_unwritten_extents_endio(handle_t *handle, inode->i_ino, (unsigned long long)ee_block, ee_len, (unsigned long long)map->m_lblk, map->m_len); #endif - err = ext4_split_unwritten_extents(handle, inode, map, path, - EXT4_GET_BLOCKS_CONVERT); + err = ext4_split_convert_extents(handle, inode, map, path, + EXT4_GET_BLOCKS_CONVERT); if (err < 0) goto out; ext4_ext_drop_refs(path); @@ -3851,6 +3950,38 @@ get_reserved_cluster_alloc(struct inode *inode, ext4_lblk_t lblk_start, } static int +ext4_ext_convert_initialized_extent(handle_t *handle, struct inode *inode, + struct ext4_map_blocks *map, + struct ext4_ext_path *path, int flags, + unsigned int allocated, ext4_fsblk_t newblock) +{ + int ret = 0; + int err = 0; + + /* + * Make sure that the extent is no bigger than we support with + * uninitialized extent + */ + if (map->m_len > EXT_UNINIT_MAX_LEN) + map->m_len = EXT_UNINIT_MAX_LEN / 2; + + ret = ext4_convert_initialized_extents(handle, inode, map, + path); + if (ret >= 0) { + ext4_update_inode_fsync_trans(handle, inode, 1); + err = check_eofblocks_fl(handle, inode, map->m_lblk, + path, map->m_len); + } else + err = ret; + map->m_flags |= EXT4_MAP_UNWRITTEN; + if (allocated > map->m_len) + allocated = map->m_len; + map->m_len = allocated; + + return err ? err : allocated; +} + +static int ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode, struct ext4_map_blocks *map, struct ext4_ext_path *path, int flags, @@ -3877,8 +4008,8 @@ ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode, /* get_block() before submit the IO, split the extent */ if ((flags & EXT4_GET_BLOCKS_PRE_IO)) { - ret = ext4_split_unwritten_extents(handle, inode, map, - path, flags); + ret = ext4_split_convert_extents(handle, inode, map, + path, flags | EXT4_GET_BLOCKS_CONVERT); if (ret <= 0) goto out; /* @@ -3906,6 +4037,7 @@ ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode, } else err = ret; map->m_flags |= EXT4_MAP_MAPPED; + map->m_pblk = newblock; if (allocated > map->m_len) allocated = map->m_len; map->m_len = allocated; @@ -3992,10 +4124,6 @@ out1: map->m_pblk = newblock; map->m_len = allocated; out2: - if (path) { - ext4_ext_drop_refs(path); - kfree(path); - } return err ? err : allocated; } @@ -4127,7 +4255,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, struct ext4_extent newex, *ex, *ex2; struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); ext4_fsblk_t newblock = 0; - int free_on_err = 0, err = 0, depth; + int free_on_err = 0, err = 0, depth, ret; unsigned int allocated = 0, offset = 0; unsigned int allocated_clusters = 0; struct ext4_allocation_request ar; @@ -4169,6 +4297,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, ext4_fsblk_t ee_start = ext4_ext_pblock(ex); unsigned short ee_len; + /* * Uninitialized extents are treated as holes, except that * we split out initialized portions during a write. @@ -4185,13 +4314,27 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, ext_debug("%u fit into %u:%d -> %llu\n", map->m_lblk, ee_block, ee_len, newblock); - if (!ext4_ext_is_uninitialized(ex)) + /* + * If the extent is initialized check whether the + * caller wants to convert it to unwritten. + */ + if ((!ext4_ext_is_uninitialized(ex)) && + (flags & EXT4_GET_BLOCKS_CONVERT_UNWRITTEN)) { + allocated = ext4_ext_convert_initialized_extent( + handle, inode, map, path, flags, + allocated, newblock); + goto out2; + } else if (!ext4_ext_is_uninitialized(ex)) goto out; - allocated = ext4_ext_handle_uninitialized_extents( + ret = ext4_ext_handle_uninitialized_extents( handle, inode, map, path, flags, allocated, newblock); - goto out3; + if (ret < 0) + err = ret; + else + allocated = ret; + goto out2; } } @@ -4472,7 +4615,6 @@ out2: kfree(path); } -out3: trace_ext4_ext_map_blocks_exit(inode, flags, map, err ? err : allocated); ext4_es_lru_add(inode); @@ -4513,34 +4655,200 @@ retry: ext4_std_error(inode->i_sb, err); } -static void ext4_falloc_update_inode(struct inode *inode, - int mode, loff_t new_size, int update_ctime) +static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset, + ext4_lblk_t len, int flags, int mode) { - struct timespec now; + struct inode *inode = file_inode(file); + handle_t *handle; + int ret = 0; + int ret2 = 0; + int retries = 0; + struct ext4_map_blocks map; + unsigned int credits; - if (update_ctime) { - now = current_fs_time(inode->i_sb); - if (!timespec_equal(&inode->i_ctime, &now)) - inode->i_ctime = now; + map.m_lblk = offset; + /* + * Don't normalize the request if it can fit in one extent so + * that it doesn't get unnecessarily split into multiple + * extents. + */ + if (len <= EXT_UNINIT_MAX_LEN) + flags |= EXT4_GET_BLOCKS_NO_NORMALIZE; + + /* + * credits to insert 1 extent into extent tree + */ + credits = ext4_chunk_trans_blocks(inode, len); + +retry: + while (ret >= 0 && ret < len) { + map.m_lblk = map.m_lblk + ret; + map.m_len = len = len - ret; + handle = ext4_journal_start(inode, EXT4_HT_MAP_BLOCKS, + credits); + if (IS_ERR(handle)) { + ret = PTR_ERR(handle); + break; + } + ret = ext4_map_blocks(handle, inode, &map, flags); + if (ret <= 0) { + ext4_debug("inode #%lu: block %u: len %u: " + "ext4_ext_map_blocks returned %d", + inode->i_ino, map.m_lblk, + map.m_len, ret); + ext4_mark_inode_dirty(handle, inode); + ret2 = ext4_journal_stop(handle); + break; + } + ret2 = ext4_journal_stop(handle); + if (ret2) + break; } + if (ret == -ENOSPC && + ext4_should_retry_alloc(inode->i_sb, &retries)) { + ret = 0; + goto retry; + } + + return ret > 0 ? ret2 : ret; +} + +static long ext4_zero_range(struct file *file, loff_t offset, + loff_t len, int mode) +{ + struct inode *inode = file_inode(file); + handle_t *handle = NULL; + unsigned int max_blocks; + loff_t new_size = 0; + int ret = 0; + int flags; + int partial; + loff_t start, end; + ext4_lblk_t lblk; + struct address_space *mapping = inode->i_mapping; + unsigned int blkbits = inode->i_blkbits; + + trace_ext4_zero_range(inode, offset, len, mode); + + /* + * Write out all dirty pages to avoid race conditions + * Then release them. + */ + if (mapping->nrpages && mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) { + ret = filemap_write_and_wait_range(mapping, offset, + offset + len - 1); + if (ret) + return ret; + } + /* - * Update only when preallocation was requested beyond - * the file size. + * Round up offset. This is not fallocate, we neet to zero out + * blocks, so convert interior block aligned part of the range to + * unwritten and possibly manually zero out unaligned parts of the + * range. */ - if (!(mode & FALLOC_FL_KEEP_SIZE)) { + start = round_up(offset, 1 << blkbits); + end = round_down((offset + len), 1 << blkbits); + + if (start < offset || end > offset + len) + return -EINVAL; + partial = (offset + len) & ((1 << blkbits) - 1); + + lblk = start >> blkbits; + max_blocks = (end >> blkbits); + if (max_blocks < lblk) + max_blocks = 0; + else + max_blocks -= lblk; + + flags = EXT4_GET_BLOCKS_CREATE_UNINIT_EXT | + EXT4_GET_BLOCKS_CONVERT_UNWRITTEN; + if (mode & FALLOC_FL_KEEP_SIZE) + flags |= EXT4_GET_BLOCKS_KEEP_SIZE; + + mutex_lock(&inode->i_mutex); + + /* + * Indirect files do not support unwritten extnets + */ + if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) { + ret = -EOPNOTSUPP; + goto out_mutex; + } + + if (!(mode & FALLOC_FL_KEEP_SIZE) && + offset + len > i_size_read(inode)) { + new_size = offset + len; + ret = inode_newsize_ok(inode, new_size); + if (ret) + goto out_mutex; + /* + * If we have a partial block after EOF we have to allocate + * the entire block. + */ + if (partial) + max_blocks += 1; + } + + if (max_blocks > 0) { + + /* Now release the pages and zero block aligned part of pages*/ + truncate_pagecache_range(inode, start, end - 1); + + /* Wait all existing dio workers, newcomers will block on i_mutex */ + ext4_inode_block_unlocked_dio(inode); + inode_dio_wait(inode); + + /* + * Remove entire range from the extent status tree. + */ + ret = ext4_es_remove_extent(inode, lblk, max_blocks); + if (ret) + goto out_dio; + + ret = ext4_alloc_file_blocks(file, lblk, max_blocks, flags, + mode); + if (ret) + goto out_dio; + } + + handle = ext4_journal_start(inode, EXT4_HT_MISC, 4); + if (IS_ERR(handle)) { + ret = PTR_ERR(handle); + ext4_std_error(inode->i_sb, ret); + goto out_dio; + } + + inode->i_mtime = inode->i_ctime = ext4_current_time(inode); + + if (new_size) { if (new_size > i_size_read(inode)) i_size_write(inode, new_size); if (new_size > EXT4_I(inode)->i_disksize) ext4_update_i_disksize(inode, new_size); } else { /* - * Mark that we allocate beyond EOF so the subsequent truncate - * can proceed even if the new size is the same as i_size. - */ - if (new_size > i_size_read(inode)) + * Mark that we allocate beyond EOF so the subsequent truncate + * can proceed even if the new size is the same as i_size. + */ + if ((offset + len) > i_size_read(inode)) ext4_set_inode_flag(inode, EXT4_INODE_EOFBLOCKS); } + ext4_mark_inode_dirty(handle, inode); + + /* Zero out partial block at the edges of the range */ + ret = ext4_zero_partial_blocks(handle, inode, offset, len); + + if (file->f_flags & O_SYNC) + ext4_handle_sync(handle); + + ext4_journal_stop(handle); +out_dio: + ext4_inode_resume_unlocked_dio(inode); +out_mutex: + mutex_unlock(&inode->i_mutex); + return ret; } /* @@ -4554,22 +4862,25 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len) { struct inode *inode = file_inode(file); handle_t *handle; - loff_t new_size; + loff_t new_size = 0; unsigned int max_blocks; int ret = 0; - int ret2 = 0; - int retries = 0; int flags; - struct ext4_map_blocks map; - unsigned int credits, blkbits = inode->i_blkbits; + ext4_lblk_t lblk; + struct timespec tv; + unsigned int blkbits = inode->i_blkbits; /* Return error if mode is not supported */ - if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) + if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | + FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE)) return -EOPNOTSUPP; if (mode & FALLOC_FL_PUNCH_HOLE) return ext4_punch_hole(inode, offset, len); + if (mode & FALLOC_FL_COLLAPSE_RANGE) + return ext4_collapse_range(inode, offset, len); + ret = ext4_convert_inline_data(inode); if (ret) return ret; @@ -4581,83 +4892,66 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len) if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) return -EOPNOTSUPP; + if (mode & FALLOC_FL_ZERO_RANGE) + return ext4_zero_range(file, offset, len, mode); + trace_ext4_fallocate_enter(inode, offset, len, mode); - map.m_lblk = offset >> blkbits; + lblk = offset >> blkbits; /* * We can't just convert len to max_blocks because * If blocksize = 4096 offset = 3072 and len = 2048 */ max_blocks = (EXT4_BLOCK_ALIGN(len + offset, blkbits) >> blkbits) - - map.m_lblk; - /* - * credits to insert 1 extent into extent tree - */ - credits = ext4_chunk_trans_blocks(inode, max_blocks); - mutex_lock(&inode->i_mutex); - ret = inode_newsize_ok(inode, (len + offset)); - if (ret) { - mutex_unlock(&inode->i_mutex); - trace_ext4_fallocate_exit(inode, offset, max_blocks, ret); - return ret; - } + - lblk; + flags = EXT4_GET_BLOCKS_CREATE_UNINIT_EXT; if (mode & FALLOC_FL_KEEP_SIZE) flags |= EXT4_GET_BLOCKS_KEEP_SIZE; - /* - * Don't normalize the request if it can fit in one extent so - * that it doesn't get unnecessarily split into multiple - * extents. - */ - if (len <= EXT_UNINIT_MAX_LEN << blkbits) - flags |= EXT4_GET_BLOCKS_NO_NORMALIZE; -retry: - while (ret >= 0 && ret < max_blocks) { - map.m_lblk = map.m_lblk + ret; - map.m_len = max_blocks = max_blocks - ret; - handle = ext4_journal_start(inode, EXT4_HT_MAP_BLOCKS, - credits); - if (IS_ERR(handle)) { - ret = PTR_ERR(handle); - break; - } - ret = ext4_map_blocks(handle, inode, &map, flags); - if (ret <= 0) { -#ifdef EXT4FS_DEBUG - ext4_warning(inode->i_sb, - "inode #%lu: block %u: len %u: " - "ext4_ext_map_blocks returned %d", - inode->i_ino, map.m_lblk, - map.m_len, ret); -#endif - ext4_mark_inode_dirty(handle, inode); - ret2 = ext4_journal_stop(handle); - break; - } - if ((map.m_lblk + ret) >= (EXT4_BLOCK_ALIGN(offset + len, - blkbits) >> blkbits)) - new_size = offset + len; - else - new_size = ((loff_t) map.m_lblk + ret) << blkbits; + mutex_lock(&inode->i_mutex); - ext4_falloc_update_inode(inode, mode, new_size, - (map.m_flags & EXT4_MAP_NEW)); - ext4_mark_inode_dirty(handle, inode); - if ((file->f_flags & O_SYNC) && ret >= max_blocks) - ext4_handle_sync(handle); - ret2 = ext4_journal_stop(handle); - if (ret2) - break; + if (!(mode & FALLOC_FL_KEEP_SIZE) && + offset + len > i_size_read(inode)) { + new_size = offset + len; + ret = inode_newsize_ok(inode, new_size); + if (ret) + goto out; } - if (ret == -ENOSPC && - ext4_should_retry_alloc(inode->i_sb, &retries)) { - ret = 0; - goto retry; + + ret = ext4_alloc_file_blocks(file, lblk, max_blocks, flags, mode); + if (ret) + goto out; + + handle = ext4_journal_start(inode, EXT4_HT_INODE, 2); + if (IS_ERR(handle)) + goto out; + + tv = inode->i_ctime = ext4_current_time(inode); + + if (new_size) { + if (new_size > i_size_read(inode)) { + i_size_write(inode, new_size); + inode->i_mtime = tv; + } + if (new_size > EXT4_I(inode)->i_disksize) + ext4_update_i_disksize(inode, new_size); + } else { + /* + * Mark that we allocate beyond EOF so the subsequent truncate + * can proceed even if the new size is the same as i_size. + */ + if ((offset + len) > i_size_read(inode)) + ext4_set_inode_flag(inode, EXT4_INODE_EOFBLOCKS); } + ext4_mark_inode_dirty(handle, inode); + if (file->f_flags & O_SYNC) + ext4_handle_sync(handle); + + ext4_journal_stop(handle); +out: mutex_unlock(&inode->i_mutex); - trace_ext4_fallocate_exit(inode, offset, max_blocks, - ret > 0 ? ret2 : ret); - return ret > 0 ? ret2 : ret; + trace_ext4_fallocate_exit(inode, offset, max_blocks, ret); + return ret; } /* @@ -4868,3 +5162,304 @@ int ext4_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, ext4_es_lru_add(inode); return error; } + +/* + * ext4_access_path: + * Function to access the path buffer for marking it dirty. + * It also checks if there are sufficient credits left in the journal handle + * to update path. + */ +static int +ext4_access_path(handle_t *handle, struct inode *inode, + struct ext4_ext_path *path) +{ + int credits, err; + + if (!ext4_handle_valid(handle)) + return 0; + + /* + * Check if need to extend journal credits + * 3 for leaf, sb, and inode plus 2 (bmap and group + * descriptor) for each block group; assume two block + * groups + */ + if (handle->h_buffer_credits < 7) { + credits = ext4_writepage_trans_blocks(inode); + err = ext4_ext_truncate_extend_restart(handle, inode, credits); + /* EAGAIN is success */ + if (err && err != -EAGAIN) + return err; + } + + err = ext4_ext_get_access(handle, inode, path); + return err; +} + +/* + * ext4_ext_shift_path_extents: + * Shift the extents of a path structure lying between path[depth].p_ext + * and EXT_LAST_EXTENT(path[depth].p_hdr) downwards, by subtracting shift + * from starting block for each extent. + */ +static int +ext4_ext_shift_path_extents(struct ext4_ext_path *path, ext4_lblk_t shift, + struct inode *inode, handle_t *handle, + ext4_lblk_t *start) +{ + int depth, err = 0; + struct ext4_extent *ex_start, *ex_last; + bool update = 0; + depth = path->p_depth; + + while (depth >= 0) { + if (depth == path->p_depth) { + ex_start = path[depth].p_ext; + if (!ex_start) + return -EIO; + + ex_last = EXT_LAST_EXTENT(path[depth].p_hdr); + if (!ex_last) + return -EIO; + + err = ext4_access_path(handle, inode, path + depth); + if (err) + goto out; + + if (ex_start == EXT_FIRST_EXTENT(path[depth].p_hdr)) + update = 1; + + *start = ex_last->ee_block + + ext4_ext_get_actual_len(ex_last); + + while (ex_start <= ex_last) { + ex_start->ee_block -= shift; + if (ex_start > + EXT_FIRST_EXTENT(path[depth].p_hdr)) { + if (ext4_ext_try_to_merge_right(inode, + path, ex_start - 1)) + ex_last--; + } + ex_start++; + } + err = ext4_ext_dirty(handle, inode, path + depth); + if (err) + goto out; + + if (--depth < 0 || !update) + break; + } + + /* Update index too */ + err = ext4_access_path(handle, inode, path + depth); + if (err) + goto out; + + path[depth].p_idx->ei_block -= shift; + err = ext4_ext_dirty(handle, inode, path + depth); + if (err) + goto out; + + /* we are done if current index is not a starting index */ + if (path[depth].p_idx != EXT_FIRST_INDEX(path[depth].p_hdr)) + break; + + depth--; + } + +out: + return err; +} + +/* + * ext4_ext_shift_extents: + * All the extents which lies in the range from start to the last allocated + * block for the file are shifted downwards by shift blocks. + * On success, 0 is returned, error otherwise. + */ +static int +ext4_ext_shift_extents(struct inode *inode, handle_t *handle, + ext4_lblk_t start, ext4_lblk_t shift) +{ + struct ext4_ext_path *path; + int ret = 0, depth; + struct ext4_extent *extent; + ext4_lblk_t stop_block, current_block; + ext4_lblk_t ex_start, ex_end; + + /* Let path point to the last extent */ + path = ext4_ext_find_extent(inode, EXT_MAX_BLOCKS - 1, NULL, 0); + if (IS_ERR(path)) + return PTR_ERR(path); + + depth = path->p_depth; + extent = path[depth].p_ext; + if (!extent) { + ext4_ext_drop_refs(path); + kfree(path); + return ret; + } + + stop_block = extent->ee_block + ext4_ext_get_actual_len(extent); + ext4_ext_drop_refs(path); + kfree(path); + + /* Nothing to shift, if hole is at the end of file */ + if (start >= stop_block) + return ret; + + /* + * Don't start shifting extents until we make sure the hole is big + * enough to accomodate the shift. + */ + path = ext4_ext_find_extent(inode, start - 1, NULL, 0); + depth = path->p_depth; + extent = path[depth].p_ext; + ex_start = extent->ee_block; + ex_end = extent->ee_block + ext4_ext_get_actual_len(extent); + ext4_ext_drop_refs(path); + kfree(path); + + if ((start == ex_start && shift > ex_start) || + (shift > start - ex_end)) + return -EINVAL; + + /* Its safe to start updating extents */ + while (start < stop_block) { + path = ext4_ext_find_extent(inode, start, NULL, 0); + if (IS_ERR(path)) + return PTR_ERR(path); + depth = path->p_depth; + extent = path[depth].p_ext; + current_block = extent->ee_block; + if (start > current_block) { + /* Hole, move to the next extent */ + ret = mext_next_extent(inode, path, &extent); + if (ret != 0) { + ext4_ext_drop_refs(path); + kfree(path); + if (ret == 1) + ret = 0; + break; + } + } + ret = ext4_ext_shift_path_extents(path, shift, inode, + handle, &start); + ext4_ext_drop_refs(path); + kfree(path); + if (ret) + break; + } + + return ret; +} + +/* + * ext4_collapse_range: + * This implements the fallocate's collapse range functionality for ext4 + * Returns: 0 and non-zero on error. + */ +int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) +{ + struct super_block *sb = inode->i_sb; + ext4_lblk_t punch_start, punch_stop; + handle_t *handle; + unsigned int credits; + loff_t new_size; + int ret; + + BUG_ON(offset + len > i_size_read(inode)); + + /* Collapse range works only on fs block size aligned offsets. */ + if (offset & (EXT4_BLOCK_SIZE(sb) - 1) || + len & (EXT4_BLOCK_SIZE(sb) - 1)) + return -EINVAL; + + if (!S_ISREG(inode->i_mode)) + return -EOPNOTSUPP; + + trace_ext4_collapse_range(inode, offset, len); + + punch_start = offset >> EXT4_BLOCK_SIZE_BITS(sb); + punch_stop = (offset + len) >> EXT4_BLOCK_SIZE_BITS(sb); + + /* Write out all dirty pages */ + ret = filemap_write_and_wait_range(inode->i_mapping, offset, -1); + if (ret) + return ret; + + /* Take mutex lock */ + mutex_lock(&inode->i_mutex); + + /* It's not possible punch hole on append only file */ + if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) { + ret = -EPERM; + goto out_mutex; + } + + if (IS_SWAPFILE(inode)) { + ret = -ETXTBSY; + goto out_mutex; + } + + /* Currently just for extent based files */ + if (!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) { + ret = -EOPNOTSUPP; + goto out_mutex; + } + + truncate_pagecache_range(inode, offset, -1); + + /* Wait for existing dio to complete */ + ext4_inode_block_unlocked_dio(inode); + inode_dio_wait(inode); + + credits = ext4_writepage_trans_blocks(inode); + handle = ext4_journal_start(inode, EXT4_HT_TRUNCATE, credits); + if (IS_ERR(handle)) { + ret = PTR_ERR(handle); + goto out_dio; + } + + down_write(&EXT4_I(inode)->i_data_sem); + ext4_discard_preallocations(inode); + + ret = ext4_es_remove_extent(inode, punch_start, + EXT_MAX_BLOCKS - punch_start - 1); + if (ret) { + up_write(&EXT4_I(inode)->i_data_sem); + goto out_stop; + } + + ret = ext4_ext_remove_space(inode, punch_start, punch_stop - 1); + if (ret) { + up_write(&EXT4_I(inode)->i_data_sem); + goto out_stop; + } + + ret = ext4_ext_shift_extents(inode, handle, punch_stop, + punch_stop - punch_start); + if (ret) { + up_write(&EXT4_I(inode)->i_data_sem); + goto out_stop; + } + + new_size = i_size_read(inode) - len; + truncate_setsize(inode, new_size); + EXT4_I(inode)->i_disksize = new_size; + + ext4_discard_preallocations(inode); + up_write(&EXT4_I(inode)->i_data_sem); + if (IS_SYNC(inode)) + ext4_handle_sync(handle); + inode->i_mtime = inode->i_ctime = ext4_current_time(inode); + ext4_mark_inode_dirty(handle, inode); + +out_stop: + ext4_journal_stop(handle); +out_dio: + ext4_inode_resume_unlocked_dio(inode); +out_mutex: + mutex_unlock(&inode->i_mutex); + return ret; +} diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c index 3981ff783950..0a014a7194b2 100644 --- a/fs/ext4/extents_status.c +++ b/fs/ext4/extents_status.c @@ -184,7 +184,7 @@ static void ext4_es_print_tree(struct inode *inode) while (node) { struct extent_status *es; es = rb_entry(node, struct extent_status, rb_node); - printk(KERN_DEBUG " [%u/%u) %llu %llx", + printk(KERN_DEBUG " [%u/%u) %llu %x", es->es_lblk, es->es_len, ext4_es_pblock(es), ext4_es_status(es)); node = rb_next(node); @@ -445,8 +445,8 @@ static void ext4_es_insert_extent_ext_check(struct inode *inode, pr_warn("ES insert assertion failed for " "inode: %lu we can find an extent " "at block [%d/%d/%llu/%c], but we " - "want to add an delayed/hole extent " - "[%d/%d/%llu/%llx]\n", + "want to add a delayed/hole extent " + "[%d/%d/%llu/%x]\n", inode->i_ino, ee_block, ee_len, ee_start, ee_status ? 'u' : 'w', es->es_lblk, es->es_len, @@ -486,8 +486,8 @@ static void ext4_es_insert_extent_ext_check(struct inode *inode, if (!ext4_es_is_delayed(es) && !ext4_es_is_hole(es)) { pr_warn("ES insert assertion failed for inode: %lu " "can't find an extent at block %d but we want " - "to add an written/unwritten extent " - "[%d/%d/%llu/%llx]\n", inode->i_ino, + "to add a written/unwritten extent " + "[%d/%d/%llu/%x]\n", inode->i_ino, es->es_lblk, es->es_lblk, es->es_len, ext4_es_pblock(es), ext4_es_status(es)); } @@ -524,7 +524,7 @@ static void ext4_es_insert_extent_ind_check(struct inode *inode, */ pr_warn("ES insert assertion failed for inode: %lu " "We can find blocks but we want to add a " - "delayed/hole extent [%d/%d/%llu/%llx]\n", + "delayed/hole extent [%d/%d/%llu/%x]\n", inode->i_ino, es->es_lblk, es->es_len, ext4_es_pblock(es), ext4_es_status(es)); return; @@ -554,7 +554,7 @@ static void ext4_es_insert_extent_ind_check(struct inode *inode, if (ext4_es_is_written(es)) { pr_warn("ES insert assertion failed for inode: %lu " "We can't find the block but we want to add " - "an written extent [%d/%d/%llu/%llx]\n", + "a written extent [%d/%d/%llu/%x]\n", inode->i_ino, es->es_lblk, es->es_len, ext4_es_pblock(es), ext4_es_status(es)); return; @@ -658,8 +658,7 @@ int ext4_es_insert_extent(struct inode *inode, ext4_lblk_t lblk, newes.es_lblk = lblk; newes.es_len = len; - ext4_es_store_pblock(&newes, pblk); - ext4_es_store_status(&newes, status); + ext4_es_store_pblock_status(&newes, pblk, status); trace_ext4_es_insert_extent(inode, &newes); ext4_es_insert_extent_check(inode, &newes); @@ -699,8 +698,7 @@ void ext4_es_cache_extent(struct inode *inode, ext4_lblk_t lblk, newes.es_lblk = lblk; newes.es_len = len; - ext4_es_store_pblock(&newes, pblk); - ext4_es_store_status(&newes, status); + ext4_es_store_pblock_status(&newes, pblk, status); trace_ext4_es_cache_extent(inode, &newes); if (!len) @@ -812,13 +810,13 @@ retry: newes.es_lblk = end + 1; newes.es_len = len2; + block = 0x7FDEADBEEF; if (ext4_es_is_written(&orig_es) || - ext4_es_is_unwritten(&orig_es)) { + ext4_es_is_unwritten(&orig_es)) block = ext4_es_pblock(&orig_es) + orig_es.es_len - len2; - ext4_es_store_pblock(&newes, block); - } - ext4_es_store_status(&newes, ext4_es_status(&orig_es)); + ext4_es_store_pblock_status(&newes, block, + ext4_es_status(&orig_es)); err = __es_insert_extent(inode, &newes); if (err) { es->es_lblk = orig_es.es_lblk; diff --git a/fs/ext4/extents_status.h b/fs/ext4/extents_status.h index 167f4ab8ecc3..f1b62a419920 100644 --- a/fs/ext4/extents_status.h +++ b/fs/ext4/extents_status.h @@ -129,6 +129,15 @@ static inline void ext4_es_store_status(struct extent_status *es, (es->es_pblk & ~ES_MASK)); } +static inline void ext4_es_store_pblock_status(struct extent_status *es, + ext4_fsblk_t pb, + unsigned int status) +{ + es->es_pblk = (((ext4_fsblk_t) + (status & EXTENT_STATUS_FLAGS) << ES_SHIFT) | + (pb & ~ES_MASK)); +} + extern void ext4_es_register_shrinker(struct ext4_sb_info *sbi); extern void ext4_es_unregister_shrinker(struct ext4_sb_info *sbi); extern void ext4_es_lru_add(struct inode *inode); diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 3da21945ff1f..4e508fc83dcf 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -152,8 +152,8 @@ ext4_file_dio_write(struct kiocb *iocb, const struct iovec *iov, if (ret > 0) { ssize_t err; - err = generic_write_sync(file, pos, ret); - if (err < 0 && ret > 0) + err = generic_write_sync(file, iocb->ki_pos - ret, ret); + if (err < 0) ret = err; } blk_finish_plug(&plug); @@ -200,6 +200,7 @@ ext4_file_write(struct kiocb *iocb, const struct iovec *iov, static const struct vm_operations_struct ext4_file_vm_ops = { .fault = filemap_fault, + .map_pages = filemap_map_pages, .page_mkwrite = ext4_page_mkwrite, .remap_pages = generic_file_remap_pages, }; @@ -617,6 +618,7 @@ const struct inode_operations ext4_file_inode_operations = { .listxattr = ext4_listxattr, .removexattr = generic_removexattr, .get_acl = ext4_get_acl, + .set_acl = ext4_set_acl, .fiemap = ext4_fiemap, }; diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c index bae987549dc3..82edf5b93352 100644 --- a/fs/ext4/inline.c +++ b/fs/ext4/inline.c @@ -849,15 +849,16 @@ int ext4_da_write_inline_data_begin(struct address_space *mapping, handle_t *handle; struct page *page; struct ext4_iloc iloc; + int retries; ret = ext4_get_inode_loc(inode, &iloc); if (ret) return ret; +retry_journal: handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); if (IS_ERR(handle)) { ret = PTR_ERR(handle); - handle = NULL; goto out; } @@ -867,7 +868,7 @@ int ext4_da_write_inline_data_begin(struct address_space *mapping, if (inline_size >= pos + len) { ret = ext4_prepare_inline_data(handle, inode, pos + len); if (ret && ret != -ENOSPC) - goto out; + goto out_journal; } if (ret == -ENOSPC) { @@ -875,6 +876,10 @@ int ext4_da_write_inline_data_begin(struct address_space *mapping, inode, flags, fsdata); + ext4_journal_stop(handle); + if (ret == -ENOSPC && + ext4_should_retry_alloc(inode->i_sb, &retries)) + goto retry_journal; goto out; } @@ -887,7 +892,7 @@ int ext4_da_write_inline_data_begin(struct address_space *mapping, page = grab_cache_page_write_begin(mapping, 0, flags); if (!page) { ret = -ENOMEM; - goto out; + goto out_journal; } down_read(&EXT4_I(inode)->xattr_sem); @@ -904,16 +909,15 @@ int ext4_da_write_inline_data_begin(struct address_space *mapping, up_read(&EXT4_I(inode)->xattr_sem); *pagep = page; - handle = NULL; brelse(iloc.bh); return 1; out_release_page: up_read(&EXT4_I(inode)->xattr_sem); unlock_page(page); page_cache_release(page); +out_journal: + ext4_journal_stop(handle); out: - if (handle) - ext4_journal_stop(handle); brelse(iloc.bh); return ret; } @@ -1837,7 +1841,6 @@ int ext4_try_to_evict_inline_data(handle_t *handle, { int error; struct ext4_xattr_entry *entry; - struct ext4_xattr_ibody_header *header; struct ext4_inode *raw_inode; struct ext4_iloc iloc; @@ -1846,7 +1849,6 @@ int ext4_try_to_evict_inline_data(handle_t *handle, return error; raw_inode = ext4_raw_inode(&iloc); - header = IHDR(inode, raw_inode); entry = (struct ext4_xattr_entry *)((void *)raw_inode + EXT4_I(inode)->i_inline_off); if (EXT4_XATTR_LEN(entry->e_name_len) + @@ -1924,9 +1926,11 @@ void ext4_inline_data_truncate(struct inode *inode, int *has_inline) } /* Clear the content within i_blocks. */ - if (i_size < EXT4_MIN_INLINE_DATA_SIZE) - memset(ext4_raw_inode(&is.iloc)->i_block + i_size, 0, - EXT4_MIN_INLINE_DATA_SIZE - i_size); + if (i_size < EXT4_MIN_INLINE_DATA_SIZE) { + void *p = (void *) ext4_raw_inode(&is.iloc)->i_block; + memset(p + i_size, 0, + EXT4_MIN_INLINE_DATA_SIZE - i_size); + } EXT4_I(inode)->i_inline_size = i_size < EXT4_MIN_INLINE_DATA_SIZE ? diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 61d49ff22c81..5b0d2c7d5408 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -38,6 +38,7 @@ #include <linux/slab.h> #include <linux/ratelimit.h> #include <linux/aio.h> +#include <linux/bitops.h> #include "ext4_jbd2.h" #include "xattr.h" @@ -144,8 +145,8 @@ static int ext4_meta_trans_blocks(struct inode *inode, int lblocks, */ static int ext4_inode_is_fast_symlink(struct inode *inode) { - int ea_blocks = EXT4_I(inode)->i_file_acl ? - (inode->i_sb->s_blocksize >> 9) : 0; + int ea_blocks = EXT4_I(inode)->i_file_acl ? + EXT4_CLUSTER_SIZE(inode->i_sb) >> 9 : 0; return (S_ISLNK(inode->i_mode) && inode->i_blocks - ea_blocks == 0); } @@ -214,7 +215,7 @@ void ext4_evict_inode(struct inode *inode) jbd2_complete_transaction(journal, commit_tid); filemap_write_and_wait(&inode->i_data); } - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); WARN_ON(atomic_read(&EXT4_I(inode)->i_ioend_count)); goto no_delete; @@ -225,7 +226,7 @@ void ext4_evict_inode(struct inode *inode) if (ext4_should_order_data(inode)) ext4_begin_ordered_truncate(inode, 0); - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); WARN_ON(atomic_read(&EXT4_I(inode)->i_ioend_count)); if (is_bad_inode(inode)) @@ -503,6 +504,7 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode, { struct extent_status es; int retval; + int ret = 0; #ifdef ES_AGGRESSIVE_TEST struct ext4_map_blocks orig_map; @@ -514,6 +516,12 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode, "logical block %lu\n", inode->i_ino, flags, map->m_len, (unsigned long) map->m_lblk); + /* + * ext4_map_blocks returns an int, and m_len is an unsigned int + */ + if (unlikely(map->m_len > INT_MAX)) + map->m_len = INT_MAX; + /* Lookup extent status tree firstly */ if (ext4_es_lookup_extent(inode, map->m_lblk, &es)) { ext4_es_lru_add(inode); @@ -552,7 +560,6 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode, EXT4_GET_BLOCKS_KEEP_SIZE); } if (retval > 0) { - int ret; unsigned int status; if (unlikely(retval != map->m_len)) { @@ -579,7 +586,7 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode, found: if (retval > 0 && map->m_flags & EXT4_MAP_MAPPED) { - int ret = check_block_validity(inode, map); + ret = check_block_validity(inode, map); if (ret != 0) return ret; } @@ -596,7 +603,13 @@ found: * with buffer head unmapped. */ if (retval > 0 && map->m_flags & EXT4_MAP_MAPPED) - return retval; + /* + * If we need to convert extent to unwritten + * we continue and do the actual work in + * ext4_ext_map_blocks() + */ + if (!(flags & EXT4_GET_BLOCKS_CONVERT_UNWRITTEN)) + return retval; /* * Here we clear m_flags because after allocating an new extent, @@ -652,7 +665,6 @@ found: ext4_clear_inode_state(inode, EXT4_STATE_DELALLOC_RESERVED); if (retval > 0) { - int ret; unsigned int status; if (unlikely(retval != map->m_len)) { @@ -687,7 +699,7 @@ found: has_zeroout: up_write((&EXT4_I(inode)->i_data_sem)); if (retval > 0 && map->m_flags & EXT4_MAP_MAPPED) { - int ret = check_block_validity(inode, map); + ret = check_block_validity(inode, map); if (ret != 0) return ret; } @@ -1772,7 +1784,7 @@ static int __ext4_journalled_writepage(struct page *page, ret = err; if (!ext4_has_inline_data(inode)) - ext4_walk_page_buffers(handle, page_bufs, 0, len, + ext4_walk_page_buffers(NULL, page_bufs, 0, len, NULL, bput_one); ext4_set_inode_state(inode, EXT4_STATE_JDATA); out: @@ -3312,33 +3324,13 @@ void ext4_set_aops(struct inode *inode) } /* - * ext4_block_truncate_page() zeroes out a mapping from file offset `from' - * up to the end of the block which corresponds to `from'. - * This required during truncate. We need to physically zero the tail end - * of that block so it doesn't yield old data if the file is later grown. - */ -int ext4_block_truncate_page(handle_t *handle, - struct address_space *mapping, loff_t from) -{ - unsigned offset = from & (PAGE_CACHE_SIZE-1); - unsigned length; - unsigned blocksize; - struct inode *inode = mapping->host; - - blocksize = inode->i_sb->s_blocksize; - length = blocksize - (offset & (blocksize - 1)); - - return ext4_block_zero_page_range(handle, mapping, from, length); -} - -/* * ext4_block_zero_page_range() zeros out a mapping of length 'length' * starting from file offset 'from'. The range to be zero'd must * be contained with in one block. If the specified range exceeds * the end of the block it will be shortened to end of the block * that cooresponds to 'from' */ -int ext4_block_zero_page_range(handle_t *handle, +static int ext4_block_zero_page_range(handle_t *handle, struct address_space *mapping, loff_t from, loff_t length) { ext4_fsblk_t index = from >> PAGE_CACHE_SHIFT; @@ -3428,6 +3420,26 @@ unlock: return err; } +/* + * ext4_block_truncate_page() zeroes out a mapping from file offset `from' + * up to the end of the block which corresponds to `from'. + * This required during truncate. We need to physically zero the tail end + * of that block so it doesn't yield old data if the file is later grown. + */ +int ext4_block_truncate_page(handle_t *handle, + struct address_space *mapping, loff_t from) +{ + unsigned offset = from & (PAGE_CACHE_SIZE-1); + unsigned length; + unsigned blocksize; + struct inode *inode = mapping->host; + + blocksize = inode->i_sb->s_blocksize; + length = blocksize - (offset & (blocksize - 1)); + + return ext4_block_zero_page_range(handle, mapping, from, length); +} + int ext4_zero_partial_blocks(handle_t *handle, struct inode *inode, loff_t lstart, loff_t length) { @@ -3501,12 +3513,7 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length) if (!S_ISREG(inode->i_mode)) return -EOPNOTSUPP; - if (EXT4_SB(sb)->s_cluster_ratio > 1) { - /* TODO: Add support for bigalloc file systems */ - return -EOPNOTSUPP; - } - - trace_ext4_punch_hole(inode, offset, length); + trace_ext4_punch_hole(inode, offset, length, 0); /* * Write out all dirty pages to avoid race conditions @@ -3613,6 +3620,12 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length) up_write(&EXT4_I(inode)->i_data_sem); if (IS_SYNC(inode)) ext4_handle_sync(handle); + + /* Now release the pages again to reduce race window */ + if (last_block_offset > first_block_offset) + truncate_pagecache_range(inode, first_block_offset, + last_block_offset); + inode->i_mtime = inode->i_ctime = ext4_current_time(inode); ext4_mark_inode_dirty(handle, inode); out_stop: @@ -3686,7 +3699,7 @@ void ext4_truncate(struct inode *inode) /* * There is a possibility that we're either freeing the inode - * or it completely new indode. In those cases we might not + * or it's a completely new inode. In those cases we might not * have i_mutex locked because it's not necessary. */ if (!(inode->i_state & (I_NEW|I_FREEING))) @@ -3926,18 +3939,20 @@ int ext4_get_inode_loc(struct inode *inode, struct ext4_iloc *iloc) void ext4_set_inode_flags(struct inode *inode) { unsigned int flags = EXT4_I(inode)->i_flags; + unsigned int new_fl = 0; - inode->i_flags &= ~(S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC); if (flags & EXT4_SYNC_FL) - inode->i_flags |= S_SYNC; + new_fl |= S_SYNC; if (flags & EXT4_APPEND_FL) - inode->i_flags |= S_APPEND; + new_fl |= S_APPEND; if (flags & EXT4_IMMUTABLE_FL) - inode->i_flags |= S_IMMUTABLE; + new_fl |= S_IMMUTABLE; if (flags & EXT4_NOATIME_FL) - inode->i_flags |= S_NOATIME; + new_fl |= S_NOATIME; if (flags & EXT4_DIRSYNC_FL) - inode->i_flags |= S_DIRSYNC; + new_fl |= S_DIRSYNC; + inode_set_flags(inode, new_fl, + S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC); } /* Propagate flags from i_flags to EXT4_I(inode)->i_flags */ @@ -4156,11 +4171,13 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) EXT4_INODE_GET_XTIME(i_atime, inode, raw_inode); EXT4_EINODE_GET_XTIME(i_crtime, ei, raw_inode); - inode->i_version = le32_to_cpu(raw_inode->i_disk_version); - if (EXT4_INODE_SIZE(inode->i_sb) > EXT4_GOOD_OLD_INODE_SIZE) { - if (EXT4_FITS_IN_INODE(raw_inode, ei, i_version_hi)) - inode->i_version |= - (__u64)(le32_to_cpu(raw_inode->i_version_hi)) << 32; + if (likely(!test_opt2(inode->i_sb, HURD_COMPAT))) { + inode->i_version = le32_to_cpu(raw_inode->i_disk_version); + if (EXT4_INODE_SIZE(inode->i_sb) > EXT4_GOOD_OLD_INODE_SIZE) { + if (EXT4_FITS_IN_INODE(raw_inode, ei, i_version_hi)) + inode->i_version |= + (__u64)(le32_to_cpu(raw_inode->i_version_hi)) << 32; + } } ret = 0; @@ -4330,8 +4347,7 @@ static int ext4_do_update_inode(handle_t *handle, goto out_brelse; raw_inode->i_dtime = cpu_to_le32(ei->i_dtime); raw_inode->i_flags = cpu_to_le32(ei->i_flags & 0xFFFFFFFF); - if (EXT4_SB(inode->i_sb)->s_es->s_creator_os != - cpu_to_le32(EXT4_OS_HURD)) + if (likely(!test_opt2(inode->i_sb, HURD_COMPAT))) raw_inode->i_file_acl_high = cpu_to_le16(ei->i_file_acl >> 32); raw_inode->i_file_acl_lo = cpu_to_le32(ei->i_file_acl); @@ -4376,12 +4392,15 @@ static int ext4_do_update_inode(handle_t *handle, raw_inode->i_block[block] = ei->i_data[block]; } - raw_inode->i_disk_version = cpu_to_le32(inode->i_version); - if (ei->i_extra_isize) { - if (EXT4_FITS_IN_INODE(raw_inode, ei, i_version_hi)) - raw_inode->i_version_hi = - cpu_to_le32(inode->i_version >> 32); - raw_inode->i_extra_isize = cpu_to_le16(ei->i_extra_isize); + if (likely(!test_opt2(inode->i_sb, HURD_COMPAT))) { + raw_inode->i_disk_version = cpu_to_le32(inode->i_version); + if (ei->i_extra_isize) { + if (EXT4_FITS_IN_INODE(raw_inode, ei, i_version_hi)) + raw_inode->i_version_hi = + cpu_to_le32(inode->i_version >> 32); + raw_inode->i_extra_isize = + cpu_to_le16(ei->i_extra_isize); + } } ext4_inode_csum_set(inode, raw_inode, ei); @@ -4448,7 +4467,12 @@ int ext4_write_inode(struct inode *inode, struct writeback_control *wbc) return -EIO; } - if (wbc->sync_mode != WB_SYNC_ALL) + /* + * No need to force transaction in WB_SYNC_NONE mode. Also + * ext4_sync_fs() will force the commit after everything is + * written. + */ + if (wbc->sync_mode != WB_SYNC_ALL || wbc->for_sync) return 0; err = ext4_force_commit(inode->i_sb); @@ -4458,7 +4482,11 @@ int ext4_write_inode(struct inode *inode, struct writeback_control *wbc) err = __ext4_get_inode_loc(inode, &iloc, 0); if (err) return err; - if (wbc->sync_mode == WB_SYNC_ALL) + /* + * sync(2) will flush the whole buffer cache. No need to do + * it here separately for each inode. + */ + if (wbc->sync_mode == WB_SYNC_ALL && !wbc->for_sync) sync_dirty_buffer(iloc.bh); if (buffer_req(iloc.bh) && !buffer_uptodate(iloc.bh)) { EXT4_ERROR_INODE_BLOCK(inode, iloc.bh->b_blocknr, @@ -4586,6 +4614,10 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr) if (attr->ia_size > sbi->s_bitmap_maxbytes) return -EFBIG; } + + if (IS_I_VERSION(inode) && attr->ia_size != inode->i_size) + inode_inc_iversion(inode); + if (S_ISREG(inode->i_mode) && (attr->ia_size < inode->i_size)) { if (ext4_should_order_data(inode)) { @@ -4663,7 +4695,7 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr) ext4_orphan_del(NULL, inode); if (!rc && (ia_valid & ATTR_MODE)) - rc = ext4_acl_chmod(inode); + rc = posix_acl_chmod(inode, inode->i_mode); err_out: ext4_std_error(inode->i_sb, error); diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 60589b60e9b0..0f2252ec274d 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -101,28 +101,18 @@ static long swap_inode_boot_loader(struct super_block *sb, handle_t *handle; int err; struct inode *inode_bl; - struct ext4_inode_info *ei; struct ext4_inode_info *ei_bl; - struct ext4_sb_info *sbi; + struct ext4_sb_info *sbi = EXT4_SB(sb); - if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode)) { - err = -EINVAL; - goto swap_boot_out; - } - - if (!inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN)) { - err = -EPERM; - goto swap_boot_out; - } + if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode)) + return -EINVAL; - sbi = EXT4_SB(sb); - ei = EXT4_I(inode); + if (!inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN)) + return -EPERM; inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO); - if (IS_ERR(inode_bl)) { - err = PTR_ERR(inode_bl); - goto swap_boot_out; - } + if (IS_ERR(inode_bl)) + return PTR_ERR(inode_bl); ei_bl = EXT4_I(inode_bl); filemap_flush(inode->i_mapping); @@ -144,7 +134,7 @@ static long swap_inode_boot_loader(struct super_block *sb, handle = ext4_journal_start(inode_bl, EXT4_HT_MOVE_EXTENTS, 2); if (IS_ERR(handle)) { err = -EINVAL; - goto swap_boot_out; + goto journal_err_out; } /* Protect extent tree against block allocations via delalloc */ @@ -197,19 +187,14 @@ static long swap_inode_boot_loader(struct super_block *sb, ext4_mark_inode_dirty(handle, inode); } } - ext4_journal_stop(handle); - ext4_double_up_write_data_sem(inode, inode_bl); +journal_err_out: ext4_inode_resume_unlocked_dio(inode); ext4_inode_resume_unlocked_dio(inode_bl); - unlock_two_nondirectories(inode, inode_bl); - iput(inode_bl); - -swap_boot_out: return err; } diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 04a5c7504be9..a888cac76e9c 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -1808,6 +1808,7 @@ int ext4_mb_find_by_goal(struct ext4_allocation_context *ac, ext4_lock_group(ac->ac_sb, group); max = mb_find_extent(e4b, ac->ac_g_ex.fe_start, ac->ac_g_ex.fe_len, &ex); + ex.fe_logical = 0xDEADFA11; /* debug value */ if (max >= ac->ac_g_ex.fe_len && ac->ac_g_ex.fe_len == sbi->s_stripe) { ext4_fsblk_t start; @@ -1936,7 +1937,7 @@ void ext4_mb_complex_scan_group(struct ext4_allocation_context *ac, */ break; } - + ex.fe_logical = 0xDEADC0DE; /* debug value */ ext4_mb_measure_extent(ac, &ex, e4b); i += ex.fe_len; @@ -1977,6 +1978,7 @@ void ext4_mb_scan_aligned(struct ext4_allocation_context *ac, max = mb_find_extent(e4b, i, sbi->s_stripe, &ex); if (max >= sbi->s_stripe) { ac->ac_found++; + ex.fe_logical = 0xDEADF00D; /* debug value */ ac->ac_b_ex = ex; ext4_mb_use_best_found(ac, e4b); break; @@ -4006,8 +4008,7 @@ static void ext4_mb_show_ac(struct ext4_allocation_context *ac) (unsigned long)ac->ac_b_ex.fe_len, (unsigned long)ac->ac_b_ex.fe_logical, (int)ac->ac_criteria); - ext4_msg(ac->ac_sb, KERN_ERR, "%lu scanned, %d found", - ac->ac_ex_scanned, ac->ac_found); + ext4_msg(ac->ac_sb, KERN_ERR, "%d found", ac->ac_found); ext4_msg(ac->ac_sb, KERN_ERR, "groups: "); ngroups = ext4_get_groups_count(sb); for (i = 0; i < ngroups; i++) { diff --git a/fs/ext4/mballoc.h b/fs/ext4/mballoc.h index 08481ee84cd5..d634e183b4d4 100644 --- a/fs/ext4/mballoc.h +++ b/fs/ext4/mballoc.h @@ -48,7 +48,7 @@ extern ushort ext4_mballoc_debug; } \ } while (0) #else -#define mb_debug(n, fmt, a...) +#define mb_debug(n, fmt, a...) no_printk(fmt, ## a) #endif #define EXT4_MB_HISTORY_ALLOC 1 /* allocation */ @@ -175,8 +175,6 @@ struct ext4_allocation_context { /* copy of the best found extent taken before preallocation efforts */ struct ext4_free_extent ac_f_ex; - /* number of iterations done. we have to track to limit searching */ - unsigned long ac_ex_scanned; __u16 ac_groups_scanned; __u16 ac_found; __u16 ac_tail; diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c index 773b503bd18c..58ee7dc87669 100644 --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -76,7 +76,7 @@ copy_extent_status(struct ext4_extent *src, struct ext4_extent *dest) * ext4_ext_path structure refers to the last extent, or a negative error * value on failure. */ -static int +int mext_next_extent(struct inode *inode, struct ext4_ext_path *path, struct ext4_extent **extent) { @@ -861,8 +861,7 @@ mext_page_mkuptodate(struct page *page, unsigned from, unsigned to) } if (!buffer_mapped(bh)) { zero_user(page, block_start, blocksize); - if (!err) - set_buffer_uptodate(bh); + set_buffer_uptodate(bh); continue; } } diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 5a0408d7b114..1cb84f78909e 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -1425,9 +1425,8 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsi return ERR_PTR(-EIO); } if (unlikely(ino == dir->i_ino)) { - EXT4_ERROR_INODE(dir, "'%.*s' linked to parent dir", - dentry->d_name.len, - dentry->d_name.name); + EXT4_ERROR_INODE(dir, "'%pd' linked to parent dir", + dentry); return ERR_PTR(-EIO); } inode = ext4_iget(dir->i_sb, ino); @@ -3001,6 +3000,154 @@ static struct buffer_head *ext4_get_first_dir_block(handle_t *handle, return ext4_get_first_inline_block(inode, parent_de, retval); } +struct ext4_renament { + struct inode *dir; + struct dentry *dentry; + struct inode *inode; + bool is_dir; + int dir_nlink_delta; + + /* entry for "dentry" */ + struct buffer_head *bh; + struct ext4_dir_entry_2 *de; + int inlined; + + /* entry for ".." in inode if it's a directory */ + struct buffer_head *dir_bh; + struct ext4_dir_entry_2 *parent_de; + int dir_inlined; +}; + +static int ext4_rename_dir_prepare(handle_t *handle, struct ext4_renament *ent) +{ + int retval; + + ent->dir_bh = ext4_get_first_dir_block(handle, ent->inode, + &retval, &ent->parent_de, + &ent->dir_inlined); + if (!ent->dir_bh) + return retval; + if (le32_to_cpu(ent->parent_de->inode) != ent->dir->i_ino) + return -EIO; + BUFFER_TRACE(ent->dir_bh, "get_write_access"); + return ext4_journal_get_write_access(handle, ent->dir_bh); +} + +static int ext4_rename_dir_finish(handle_t *handle, struct ext4_renament *ent, + unsigned dir_ino) +{ + int retval; + + ent->parent_de->inode = cpu_to_le32(dir_ino); + BUFFER_TRACE(ent->dir_bh, "call ext4_handle_dirty_metadata"); + if (!ent->dir_inlined) { + if (is_dx(ent->inode)) { + retval = ext4_handle_dirty_dx_node(handle, + ent->inode, + ent->dir_bh); + } else { + retval = ext4_handle_dirty_dirent_node(handle, + ent->inode, + ent->dir_bh); + } + } else { + retval = ext4_mark_inode_dirty(handle, ent->inode); + } + if (retval) { + ext4_std_error(ent->dir->i_sb, retval); + return retval; + } + return 0; +} + +static int ext4_setent(handle_t *handle, struct ext4_renament *ent, + unsigned ino, unsigned file_type) +{ + int retval; + + BUFFER_TRACE(ent->bh, "get write access"); + retval = ext4_journal_get_write_access(handle, ent->bh); + if (retval) + return retval; + ent->de->inode = cpu_to_le32(ino); + if (EXT4_HAS_INCOMPAT_FEATURE(ent->dir->i_sb, + EXT4_FEATURE_INCOMPAT_FILETYPE)) + ent->de->file_type = file_type; + ent->dir->i_version++; + ent->dir->i_ctime = ent->dir->i_mtime = + ext4_current_time(ent->dir); + ext4_mark_inode_dirty(handle, ent->dir); + BUFFER_TRACE(ent->bh, "call ext4_handle_dirty_metadata"); + if (!ent->inlined) { + retval = ext4_handle_dirty_dirent_node(handle, + ent->dir, ent->bh); + if (unlikely(retval)) { + ext4_std_error(ent->dir->i_sb, retval); + return retval; + } + } + brelse(ent->bh); + ent->bh = NULL; + + return 0; +} + +static int ext4_find_delete_entry(handle_t *handle, struct inode *dir, + const struct qstr *d_name) +{ + int retval = -ENOENT; + struct buffer_head *bh; + struct ext4_dir_entry_2 *de; + + bh = ext4_find_entry(dir, d_name, &de, NULL); + if (bh) { + retval = ext4_delete_entry(handle, dir, de, bh); + brelse(bh); + } + return retval; +} + +static void ext4_rename_delete(handle_t *handle, struct ext4_renament *ent) +{ + int retval; + /* + * ent->de could have moved from under us during htree split, so make + * sure that we are deleting the right entry. We might also be pointing + * to a stale entry in the unused part of ent->bh so just checking inum + * and the name isn't enough. + */ + if (le32_to_cpu(ent->de->inode) != ent->inode->i_ino || + ent->de->name_len != ent->dentry->d_name.len || + strncmp(ent->de->name, ent->dentry->d_name.name, + ent->de->name_len)) { + retval = ext4_find_delete_entry(handle, ent->dir, + &ent->dentry->d_name); + } else { + retval = ext4_delete_entry(handle, ent->dir, ent->de, ent->bh); + if (retval == -ENOENT) { + retval = ext4_find_delete_entry(handle, ent->dir, + &ent->dentry->d_name); + } + } + + if (retval) { + ext4_warning(ent->dir->i_sb, + "Deleting old file (%lu), %d, error=%d", + ent->dir->i_ino, ent->dir->i_nlink, retval); + } +} + +static void ext4_update_dir_count(handle_t *handle, struct ext4_renament *ent) +{ + if (ent->dir_nlink_delta) { + if (ent->dir_nlink_delta == -1) + ext4_dec_count(handle, ent->dir); + else + ext4_inc_count(handle, ent->dir); + ext4_mark_inode_dirty(handle, ent->dir); + } +} + /* * Anybody can rename anything with this: the permission checks are left to the * higher-level routines. @@ -3013,198 +3160,267 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry) { handle_t *handle = NULL; - struct inode *old_inode, *new_inode; - struct buffer_head *old_bh, *new_bh, *dir_bh; - struct ext4_dir_entry_2 *old_de, *new_de; + struct ext4_renament old = { + .dir = old_dir, + .dentry = old_dentry, + .inode = old_dentry->d_inode, + }; + struct ext4_renament new = { + .dir = new_dir, + .dentry = new_dentry, + .inode = new_dentry->d_inode, + }; int retval; - int inlined = 0, new_inlined = 0; - struct ext4_dir_entry_2 *parent_de; - dquot_initialize(old_dir); - dquot_initialize(new_dir); - - old_bh = new_bh = dir_bh = NULL; + dquot_initialize(old.dir); + dquot_initialize(new.dir); /* Initialize quotas before so that eventual writes go * in separate transaction */ - if (new_dentry->d_inode) - dquot_initialize(new_dentry->d_inode); + if (new.inode) + dquot_initialize(new.inode); - old_bh = ext4_find_entry(old_dir, &old_dentry->d_name, &old_de, NULL); + old.bh = ext4_find_entry(old.dir, &old.dentry->d_name, &old.de, NULL); /* * Check for inode number is _not_ due to possible IO errors. * We might rmdir the source, keep it as pwd of some process * and merrily kill the link to whatever was created under the * same name. Goodbye sticky bit ;-< */ - old_inode = old_dentry->d_inode; retval = -ENOENT; - if (!old_bh || le32_to_cpu(old_de->inode) != old_inode->i_ino) + if (!old.bh || le32_to_cpu(old.de->inode) != old.inode->i_ino) goto end_rename; - new_inode = new_dentry->d_inode; - new_bh = ext4_find_entry(new_dir, &new_dentry->d_name, - &new_de, &new_inlined); - if (new_bh) { - if (!new_inode) { - brelse(new_bh); - new_bh = NULL; + new.bh = ext4_find_entry(new.dir, &new.dentry->d_name, + &new.de, &new.inlined); + if (new.bh) { + if (!new.inode) { + brelse(new.bh); + new.bh = NULL; } } - if (new_inode && !test_opt(new_dir->i_sb, NO_AUTO_DA_ALLOC)) - ext4_alloc_da_blocks(old_inode); + if (new.inode && !test_opt(new.dir->i_sb, NO_AUTO_DA_ALLOC)) + ext4_alloc_da_blocks(old.inode); - handle = ext4_journal_start(old_dir, EXT4_HT_DIR, - (2 * EXT4_DATA_TRANS_BLOCKS(old_dir->i_sb) + + handle = ext4_journal_start(old.dir, EXT4_HT_DIR, + (2 * EXT4_DATA_TRANS_BLOCKS(old.dir->i_sb) + EXT4_INDEX_EXTRA_TRANS_BLOCKS + 2)); if (IS_ERR(handle)) return PTR_ERR(handle); - if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) + if (IS_DIRSYNC(old.dir) || IS_DIRSYNC(new.dir)) ext4_handle_sync(handle); - if (S_ISDIR(old_inode->i_mode)) { - if (new_inode) { + if (S_ISDIR(old.inode->i_mode)) { + if (new.inode) { retval = -ENOTEMPTY; - if (!empty_dir(new_inode)) + if (!empty_dir(new.inode)) + goto end_rename; + } else { + retval = -EMLINK; + if (new.dir != old.dir && EXT4_DIR_LINK_MAX(new.dir)) goto end_rename; } - retval = -EIO; - dir_bh = ext4_get_first_dir_block(handle, old_inode, - &retval, &parent_de, - &inlined); - if (!dir_bh) - goto end_rename; - if (le32_to_cpu(parent_de->inode) != old_dir->i_ino) - goto end_rename; - retval = -EMLINK; - if (!new_inode && new_dir != old_dir && - EXT4_DIR_LINK_MAX(new_dir)) - goto end_rename; - BUFFER_TRACE(dir_bh, "get_write_access"); - retval = ext4_journal_get_write_access(handle, dir_bh); + retval = ext4_rename_dir_prepare(handle, &old); if (retval) goto end_rename; } - if (!new_bh) { - retval = ext4_add_entry(handle, new_dentry, old_inode); + if (!new.bh) { + retval = ext4_add_entry(handle, new.dentry, old.inode); if (retval) goto end_rename; } else { - BUFFER_TRACE(new_bh, "get write access"); - retval = ext4_journal_get_write_access(handle, new_bh); + retval = ext4_setent(handle, &new, + old.inode->i_ino, old.de->file_type); if (retval) goto end_rename; - new_de->inode = cpu_to_le32(old_inode->i_ino); - if (EXT4_HAS_INCOMPAT_FEATURE(new_dir->i_sb, - EXT4_FEATURE_INCOMPAT_FILETYPE)) - new_de->file_type = old_de->file_type; - new_dir->i_version++; - new_dir->i_ctime = new_dir->i_mtime = - ext4_current_time(new_dir); - ext4_mark_inode_dirty(handle, new_dir); - BUFFER_TRACE(new_bh, "call ext4_handle_dirty_metadata"); - if (!new_inlined) { - retval = ext4_handle_dirty_dirent_node(handle, - new_dir, new_bh); - if (unlikely(retval)) { - ext4_std_error(new_dir->i_sb, retval); - goto end_rename; - } - } - brelse(new_bh); - new_bh = NULL; } /* * Like most other Unix systems, set the ctime for inodes on a * rename. */ - old_inode->i_ctime = ext4_current_time(old_inode); - ext4_mark_inode_dirty(handle, old_inode); + old.inode->i_ctime = ext4_current_time(old.inode); + ext4_mark_inode_dirty(handle, old.inode); /* * ok, that's it */ - if (le32_to_cpu(old_de->inode) != old_inode->i_ino || - old_de->name_len != old_dentry->d_name.len || - strncmp(old_de->name, old_dentry->d_name.name, old_de->name_len) || - (retval = ext4_delete_entry(handle, old_dir, - old_de, old_bh)) == -ENOENT) { - /* old_de could have moved from under us during htree split, so - * make sure that we are deleting the right entry. We might - * also be pointing to a stale entry in the unused part of - * old_bh so just checking inum and the name isn't enough. */ - struct buffer_head *old_bh2; - struct ext4_dir_entry_2 *old_de2; - - old_bh2 = ext4_find_entry(old_dir, &old_dentry->d_name, - &old_de2, NULL); - if (old_bh2) { - retval = ext4_delete_entry(handle, old_dir, - old_de2, old_bh2); - brelse(old_bh2); - } + ext4_rename_delete(handle, &old); + + if (new.inode) { + ext4_dec_count(handle, new.inode); + new.inode->i_ctime = ext4_current_time(new.inode); } - if (retval) { - ext4_warning(old_dir->i_sb, - "Deleting old file (%lu), %d, error=%d", - old_dir->i_ino, old_dir->i_nlink, retval); - } - - if (new_inode) { - ext4_dec_count(handle, new_inode); - new_inode->i_ctime = ext4_current_time(new_inode); - } - old_dir->i_ctime = old_dir->i_mtime = ext4_current_time(old_dir); - ext4_update_dx_flag(old_dir); - if (dir_bh) { - parent_de->inode = cpu_to_le32(new_dir->i_ino); - BUFFER_TRACE(dir_bh, "call ext4_handle_dirty_metadata"); - if (!inlined) { - if (is_dx(old_inode)) { - retval = ext4_handle_dirty_dx_node(handle, - old_inode, - dir_bh); - } else { - retval = ext4_handle_dirty_dirent_node(handle, - old_inode, dir_bh); - } - } else { - retval = ext4_mark_inode_dirty(handle, old_inode); - } - if (retval) { - ext4_std_error(old_dir->i_sb, retval); + old.dir->i_ctime = old.dir->i_mtime = ext4_current_time(old.dir); + ext4_update_dx_flag(old.dir); + if (old.dir_bh) { + retval = ext4_rename_dir_finish(handle, &old, new.dir->i_ino); + if (retval) goto end_rename; - } - ext4_dec_count(handle, old_dir); - if (new_inode) { + + ext4_dec_count(handle, old.dir); + if (new.inode) { /* checked empty_dir above, can't have another parent, * ext4_dec_count() won't work for many-linked dirs */ - clear_nlink(new_inode); + clear_nlink(new.inode); } else { - ext4_inc_count(handle, new_dir); - ext4_update_dx_flag(new_dir); - ext4_mark_inode_dirty(handle, new_dir); + ext4_inc_count(handle, new.dir); + ext4_update_dx_flag(new.dir); + ext4_mark_inode_dirty(handle, new.dir); } } - ext4_mark_inode_dirty(handle, old_dir); - if (new_inode) { - ext4_mark_inode_dirty(handle, new_inode); - if (!new_inode->i_nlink) - ext4_orphan_add(handle, new_inode); + ext4_mark_inode_dirty(handle, old.dir); + if (new.inode) { + ext4_mark_inode_dirty(handle, new.inode); + if (!new.inode->i_nlink) + ext4_orphan_add(handle, new.inode); } retval = 0; end_rename: - brelse(dir_bh); - brelse(old_bh); - brelse(new_bh); + brelse(old.dir_bh); + brelse(old.bh); + brelse(new.bh); if (handle) ext4_journal_stop(handle); return retval; } +static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry, + struct inode *new_dir, struct dentry *new_dentry) +{ + handle_t *handle = NULL; + struct ext4_renament old = { + .dir = old_dir, + .dentry = old_dentry, + .inode = old_dentry->d_inode, + }; + struct ext4_renament new = { + .dir = new_dir, + .dentry = new_dentry, + .inode = new_dentry->d_inode, + }; + u8 new_file_type; + int retval; + + dquot_initialize(old.dir); + dquot_initialize(new.dir); + + old.bh = ext4_find_entry(old.dir, &old.dentry->d_name, + &old.de, &old.inlined); + /* + * Check for inode number is _not_ due to possible IO errors. + * We might rmdir the source, keep it as pwd of some process + * and merrily kill the link to whatever was created under the + * same name. Goodbye sticky bit ;-< + */ + retval = -ENOENT; + if (!old.bh || le32_to_cpu(old.de->inode) != old.inode->i_ino) + goto end_rename; + + new.bh = ext4_find_entry(new.dir, &new.dentry->d_name, + &new.de, &new.inlined); + + /* RENAME_EXCHANGE case: old *and* new must both exist */ + if (!new.bh || le32_to_cpu(new.de->inode) != new.inode->i_ino) + goto end_rename; + + handle = ext4_journal_start(old.dir, EXT4_HT_DIR, + (2 * EXT4_DATA_TRANS_BLOCKS(old.dir->i_sb) + + 2 * EXT4_INDEX_EXTRA_TRANS_BLOCKS + 2)); + if (IS_ERR(handle)) + return PTR_ERR(handle); + + if (IS_DIRSYNC(old.dir) || IS_DIRSYNC(new.dir)) + ext4_handle_sync(handle); + + if (S_ISDIR(old.inode->i_mode)) { + old.is_dir = true; + retval = ext4_rename_dir_prepare(handle, &old); + if (retval) + goto end_rename; + } + if (S_ISDIR(new.inode->i_mode)) { + new.is_dir = true; + retval = ext4_rename_dir_prepare(handle, &new); + if (retval) + goto end_rename; + } + + /* + * Other than the special case of overwriting a directory, parents' + * nlink only needs to be modified if this is a cross directory rename. + */ + if (old.dir != new.dir && old.is_dir != new.is_dir) { + old.dir_nlink_delta = old.is_dir ? -1 : 1; + new.dir_nlink_delta = -old.dir_nlink_delta; + retval = -EMLINK; + if ((old.dir_nlink_delta > 0 && EXT4_DIR_LINK_MAX(old.dir)) || + (new.dir_nlink_delta > 0 && EXT4_DIR_LINK_MAX(new.dir))) + goto end_rename; + } + + new_file_type = new.de->file_type; + retval = ext4_setent(handle, &new, old.inode->i_ino, old.de->file_type); + if (retval) + goto end_rename; + + retval = ext4_setent(handle, &old, new.inode->i_ino, new_file_type); + if (retval) + goto end_rename; + + /* + * Like most other Unix systems, set the ctime for inodes on a + * rename. + */ + old.inode->i_ctime = ext4_current_time(old.inode); + new.inode->i_ctime = ext4_current_time(new.inode); + ext4_mark_inode_dirty(handle, old.inode); + ext4_mark_inode_dirty(handle, new.inode); + + if (old.dir_bh) { + retval = ext4_rename_dir_finish(handle, &old, new.dir->i_ino); + if (retval) + goto end_rename; + } + if (new.dir_bh) { + retval = ext4_rename_dir_finish(handle, &new, old.dir->i_ino); + if (retval) + goto end_rename; + } + ext4_update_dir_count(handle, &old); + ext4_update_dir_count(handle, &new); + retval = 0; + +end_rename: + brelse(old.dir_bh); + brelse(new.dir_bh); + brelse(old.bh); + brelse(new.bh); + if (handle) + ext4_journal_stop(handle); + return retval; +} + +static int ext4_rename2(struct inode *old_dir, struct dentry *old_dentry, + struct inode *new_dir, struct dentry *new_dentry, + unsigned int flags) +{ + if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE)) + return -EINVAL; + + if (flags & RENAME_EXCHANGE) { + return ext4_cross_rename(old_dir, old_dentry, + new_dir, new_dentry); + } + /* + * Existence checking was done by the VFS, otherwise "RENAME_NOREPLACE" + * is equivalent to regular rename. + */ + return ext4_rename(old_dir, old_dentry, new_dir, new_dentry); +} + /* * directories can handle most operations... */ @@ -3219,12 +3435,14 @@ const struct inode_operations ext4_dir_inode_operations = { .mknod = ext4_mknod, .tmpfile = ext4_tmpfile, .rename = ext4_rename, + .rename2 = ext4_rename2, .setattr = ext4_setattr, .setxattr = generic_setxattr, .getxattr = generic_getxattr, .listxattr = ext4_listxattr, .removexattr = generic_removexattr, .get_acl = ext4_get_acl, + .set_acl = ext4_set_acl, .fiemap = ext4_fiemap, }; @@ -3235,4 +3453,5 @@ const struct inode_operations ext4_special_inode_operations = { .listxattr = ext4_listxattr, .removexattr = generic_removexattr, .get_acl = ext4_get_acl, + .set_acl = ext4_set_acl, }; diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index d488f80ee32d..ab95508e3d40 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -65,9 +65,9 @@ static void ext4_finish_bio(struct bio *bio) { int i; int error = !test_bit(BIO_UPTODATE, &bio->bi_flags); + struct bio_vec *bvec; - for (i = 0; i < bio->bi_vcnt; i++) { - struct bio_vec *bvec = &bio->bi_io_vec[i]; + bio_for_each_segment_all(bvec, bio, i) { struct page *page = bvec->bv_page; struct buffer_head *bh, *head; unsigned bio_start = bvec->bv_offset; @@ -298,7 +298,7 @@ ext4_io_end_t *ext4_get_io_end(ext4_io_end_t *io_end) static void ext4_end_bio(struct bio *bio, int error) { ext4_io_end_t *io_end = bio->bi_private; - sector_t bi_sector = bio->bi_sector; + sector_t bi_sector = bio->bi_iter.bi_sector; BUG_ON(!io_end); bio->bi_end_io = NULL; @@ -366,7 +366,7 @@ static int io_submit_init_bio(struct ext4_io_submit *io, bio = bio_alloc(GFP_NOIO, min(nvecs, BIO_MAX_PAGES)); if (!bio) return -ENOMEM; - bio->bi_sector = bh->b_blocknr * (bh->b_size >> 9); + bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9); bio->bi_bdev = bh->b_bdev; bio->bi_end_io = ext4_end_bio; bio->bi_private = ext4_get_io_end(io->io_end); diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index c5adbb318a90..f3b84cd9de56 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -243,6 +243,7 @@ static int ext4_alloc_group_tables(struct super_block *sb, ext4_group_t group; ext4_group_t last_group; unsigned overhead; + __u16 uninit_mask = (flexbg_size > 1) ? ~EXT4_BG_BLOCK_UNINIT : ~0; BUG_ON(flex_gd->count == 0 || group_data == NULL); @@ -266,7 +267,7 @@ next_group: src_group++; for (; src_group <= last_group; src_group++) { overhead = ext4_group_overhead_blocks(sb, src_group); - if (overhead != 0) + if (overhead == 0) last_blk += group_data[src_group - group].blocks_count; else break; @@ -280,8 +281,7 @@ next_group: group = ext4_get_group_number(sb, start_blk - 1); group -= group_data[0].group; group_data[group].free_blocks_count--; - if (flexbg_size > 1) - flex_gd->bg_flags[group] &= ~EXT4_BG_BLOCK_UNINIT; + flex_gd->bg_flags[group] &= uninit_mask; } /* Allocate inode bitmaps */ @@ -292,22 +292,30 @@ next_group: group = ext4_get_group_number(sb, start_blk - 1); group -= group_data[0].group; group_data[group].free_blocks_count--; - if (flexbg_size > 1) - flex_gd->bg_flags[group] &= ~EXT4_BG_BLOCK_UNINIT; + flex_gd->bg_flags[group] &= uninit_mask; } /* Allocate inode tables */ for (; it_index < flex_gd->count; it_index++) { - if (start_blk + EXT4_SB(sb)->s_itb_per_group > last_blk) + unsigned int itb = EXT4_SB(sb)->s_itb_per_group; + ext4_fsblk_t next_group_start; + + if (start_blk + itb > last_blk) goto next_group; group_data[it_index].inode_table = start_blk; - group = ext4_get_group_number(sb, start_blk - 1); + group = ext4_get_group_number(sb, start_blk); + next_group_start = ext4_group_first_block_no(sb, group + 1); group -= group_data[0].group; - group_data[group].free_blocks_count -= - EXT4_SB(sb)->s_itb_per_group; - if (flexbg_size > 1) - flex_gd->bg_flags[group] &= ~EXT4_BG_BLOCK_UNINIT; + if (start_blk + itb > next_group_start) { + flex_gd->bg_flags[group + 1] &= uninit_mask; + overhead = start_blk + itb - next_group_start; + group_data[group + 1].free_blocks_count -= overhead; + itb -= overhead; + } + + group_data[group].free_blocks_count -= itb; + flex_gd->bg_flags[group] &= uninit_mask; start_blk += EXT4_SB(sb)->s_itb_per_group; } @@ -401,7 +409,7 @@ static int set_flexbg_block_bitmap(struct super_block *sb, handle_t *handle, start = ext4_group_first_block_no(sb, group); group -= flex_gd->groups[0].group; - count2 = sb->s_blocksize * 8 - (block - start); + count2 = EXT4_BLOCKS_PER_GROUP(sb) - (block - start); if (count2 > count) count2 = count; @@ -620,7 +628,7 @@ handle_ib: if (err) goto out; count = group_table_count[j]; - start = group_data[i].block_bitmap; + start = (&group_data[i].block_bitmap)[j]; block = start; } diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 1f7784de05b6..f3c667091618 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -59,6 +59,7 @@ static struct kset *ext4_kset; static struct ext4_lazy_init *ext4_li_info; static struct mutex ext4_li_mtx; static struct ext4_features *ext4_feat; +static int ext4_mballoc_ready; static int ext4_load_journal(struct super_block *, struct ext4_super_block *, unsigned long journal_devnum); @@ -845,6 +846,10 @@ static void ext4_put_super(struct super_block *sb) invalidate_bdev(sbi->journal_bdev); ext4_blkdev_remove(sbi); } + if (sbi->s_mb_cache) { + ext4_xattr_destroy_cache(sbi->s_mb_cache); + sbi->s_mb_cache = NULL; + } if (sbi->s_mmp_tsk) kthread_stop(sbi->s_mmp_tsk); sb->s_fs_info = NULL; @@ -940,7 +945,7 @@ static void init_once(void *foo) inode_init_once(&ei->vfs_inode); } -static int init_inodecache(void) +static int __init init_inodecache(void) { ext4_inode_cachep = kmem_cache_create("ext4_inode_cache", sizeof(struct ext4_inode_info), @@ -3575,6 +3580,16 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) "feature flags set on rev 0 fs, " "running e2fsck is recommended"); + if (es->s_creator_os == cpu_to_le32(EXT4_OS_HURD)) { + set_opt2(sb, HURD_COMPAT); + if (EXT4_HAS_INCOMPAT_FEATURE(sb, + EXT4_FEATURE_INCOMPAT_64BIT)) { + ext4_msg(sb, KERN_ERR, + "The Hurd can't support 64-bit file systems"); + goto failed_mount; + } + } + if (IS_EXT2_SB(sb)) { if (ext2_feature_set_ok(sb)) ext4_msg(sb, KERN_INFO, "mounting ext2 file system " @@ -3695,16 +3710,22 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) for (i = 0; i < 4; i++) sbi->s_hash_seed[i] = le32_to_cpu(es->s_hash_seed[i]); sbi->s_def_hash_version = es->s_def_hash_version; - i = le32_to_cpu(es->s_flags); - if (i & EXT2_FLAGS_UNSIGNED_HASH) - sbi->s_hash_unsigned = 3; - else if ((i & EXT2_FLAGS_SIGNED_HASH) == 0) { + if (EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_DIR_INDEX)) { + i = le32_to_cpu(es->s_flags); + if (i & EXT2_FLAGS_UNSIGNED_HASH) + sbi->s_hash_unsigned = 3; + else if ((i & EXT2_FLAGS_SIGNED_HASH) == 0) { #ifdef __CHAR_UNSIGNED__ - es->s_flags |= cpu_to_le32(EXT2_FLAGS_UNSIGNED_HASH); - sbi->s_hash_unsigned = 3; + if (!(sb->s_flags & MS_RDONLY)) + es->s_flags |= + cpu_to_le32(EXT2_FLAGS_UNSIGNED_HASH); + sbi->s_hash_unsigned = 3; #else - es->s_flags |= cpu_to_le32(EXT2_FLAGS_SIGNED_HASH); + if (!(sb->s_flags & MS_RDONLY)) + es->s_flags |= + cpu_to_le32(EXT2_FLAGS_SIGNED_HASH); #endif + } } /* Handle clustersize */ @@ -4004,6 +4025,14 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) percpu_counter_set(&sbi->s_dirtyclusters_counter, 0); no_journal: + if (ext4_mballoc_ready) { + sbi->s_mb_cache = ext4_xattr_create_cache(sb->s_id); + if (!sbi->s_mb_cache) { + ext4_msg(sb, KERN_ERR, "Failed to create an mb_cache"); + goto failed_mount_wq; + } + } + /* * Get the # of file system overhead blocks from the * superblock if present. @@ -4829,6 +4858,9 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data) } if (*flags & MS_RDONLY) { + err = sync_filesystem(sb); + if (err < 0) + goto restore_opts; err = dquot_suspend(sb, -1); if (err < 0) goto restore_opts; @@ -5510,11 +5542,9 @@ static int __init ext4_init_fs(void) err = ext4_init_mballoc(); if (err) - goto out3; - - err = ext4_init_xattr(); - if (err) goto out2; + else + ext4_mballoc_ready = 1; err = init_inodecache(); if (err) goto out1; @@ -5530,10 +5560,9 @@ out: unregister_as_ext3(); destroy_inodecache(); out1: - ext4_exit_xattr(); -out2: + ext4_mballoc_ready = 0; ext4_exit_mballoc(); -out3: +out2: ext4_exit_feat_adverts(); out4: if (ext4_proc_root) @@ -5556,7 +5585,6 @@ static void __exit ext4_exit_fs(void) unregister_as_ext3(); unregister_filesystem(&ext4_fs_type); destroy_inodecache(); - ext4_exit_xattr(); ext4_exit_mballoc(); ext4_exit_feat_adverts(); remove_proc_entry("fs/ext4", NULL); diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index 1423c4816a47..1f5cf5880718 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -81,7 +81,7 @@ # define ea_bdebug(bh, fmt, ...) no_printk(fmt, ##__VA_ARGS__) #endif -static void ext4_xattr_cache_insert(struct buffer_head *); +static void ext4_xattr_cache_insert(struct mb_cache *, struct buffer_head *); static struct buffer_head *ext4_xattr_cache_find(struct inode *, struct ext4_xattr_header *, struct mb_cache_entry **); @@ -90,13 +90,11 @@ static void ext4_xattr_rehash(struct ext4_xattr_header *, static int ext4_xattr_list(struct dentry *dentry, char *buffer, size_t buffer_size); -static struct mb_cache *ext4_xattr_cache; - static const struct xattr_handler *ext4_xattr_handler_map[] = { [EXT4_XATTR_INDEX_USER] = &ext4_xattr_user_handler, #ifdef CONFIG_EXT4_FS_POSIX_ACL - [EXT4_XATTR_INDEX_POSIX_ACL_ACCESS] = &ext4_xattr_acl_access_handler, - [EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT] = &ext4_xattr_acl_default_handler, + [EXT4_XATTR_INDEX_POSIX_ACL_ACCESS] = &posix_acl_access_xattr_handler, + [EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT] = &posix_acl_default_xattr_handler, #endif [EXT4_XATTR_INDEX_TRUSTED] = &ext4_xattr_trusted_handler, #ifdef CONFIG_EXT4_FS_SECURITY @@ -108,8 +106,8 @@ const struct xattr_handler *ext4_xattr_handlers[] = { &ext4_xattr_user_handler, &ext4_xattr_trusted_handler, #ifdef CONFIG_EXT4_FS_POSIX_ACL - &ext4_xattr_acl_access_handler, - &ext4_xattr_acl_default_handler, + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, #endif #ifdef CONFIG_EXT4_FS_SECURITY &ext4_xattr_security_handler, @@ -117,6 +115,9 @@ const struct xattr_handler *ext4_xattr_handlers[] = { NULL }; +#define EXT4_GET_MB_CACHE(inode) (((struct ext4_sb_info *) \ + inode->i_sb->s_fs_info)->s_mb_cache) + static __le32 ext4_xattr_block_csum(struct inode *inode, sector_t block_nr, struct ext4_xattr_header *hdr) @@ -265,6 +266,7 @@ ext4_xattr_block_get(struct inode *inode, int name_index, const char *name, struct ext4_xattr_entry *entry; size_t size; int error; + struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode); ea_idebug(inode, "name=%d.%s, buffer=%p, buffer_size=%ld", name_index, name, buffer, (long)buffer_size); @@ -286,7 +288,7 @@ bad_block: error = -EIO; goto cleanup; } - ext4_xattr_cache_insert(bh); + ext4_xattr_cache_insert(ext4_mb_cache, bh); entry = BFIRST(bh); error = ext4_xattr_find_entry(&entry, name_index, name, bh->b_size, 1); if (error == -EIO) @@ -409,6 +411,7 @@ ext4_xattr_block_list(struct dentry *dentry, char *buffer, size_t buffer_size) struct inode *inode = dentry->d_inode; struct buffer_head *bh = NULL; int error; + struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode); ea_idebug(inode, "buffer=%p, buffer_size=%ld", buffer, (long)buffer_size); @@ -430,7 +433,7 @@ ext4_xattr_block_list(struct dentry *dentry, char *buffer, size_t buffer_size) error = -EIO; goto cleanup; } - ext4_xattr_cache_insert(bh); + ext4_xattr_cache_insert(ext4_mb_cache, bh); error = ext4_xattr_list_entries(dentry, BFIRST(bh), buffer, buffer_size); cleanup: @@ -526,8 +529,9 @@ ext4_xattr_release_block(handle_t *handle, struct inode *inode, { struct mb_cache_entry *ce = NULL; int error = 0; + struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode); - ce = mb_cache_entry_get(ext4_xattr_cache, bh->b_bdev, bh->b_blocknr); + ce = mb_cache_entry_get(ext4_mb_cache, bh->b_bdev, bh->b_blocknr); error = ext4_journal_get_write_access(handle, bh); if (error) goto out; @@ -567,12 +571,13 @@ static size_t ext4_xattr_free_space(struct ext4_xattr_entry *last, size_t *min_offs, void *base, int *total) { for (; !IS_LAST_ENTRY(last); last = EXT4_XATTR_NEXT(last)) { - *total += EXT4_XATTR_LEN(last->e_name_len); if (!last->e_value_block && last->e_value_size) { size_t offs = le16_to_cpu(last->e_value_offs); if (offs < *min_offs) *min_offs = offs; } + if (total) + *total += EXT4_XATTR_LEN(last->e_name_len); } return (*min_offs - ((void *)last - base) - sizeof(__u32)); } @@ -745,13 +750,14 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode, struct ext4_xattr_search *s = &bs->s; struct mb_cache_entry *ce = NULL; int error = 0; + struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode); #define header(x) ((struct ext4_xattr_header *)(x)) if (i->value && i->value_len > sb->s_blocksize) return -ENOSPC; if (s->base) { - ce = mb_cache_entry_get(ext4_xattr_cache, bs->bh->b_bdev, + ce = mb_cache_entry_get(ext4_mb_cache, bs->bh->b_bdev, bs->bh->b_blocknr); error = ext4_journal_get_write_access(handle, bs->bh); if (error) @@ -769,7 +775,8 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode, if (!IS_LAST_ENTRY(s->first)) ext4_xattr_rehash(header(s->base), s->here); - ext4_xattr_cache_insert(bs->bh); + ext4_xattr_cache_insert(ext4_mb_cache, + bs->bh); } unlock_buffer(bs->bh); if (error == -EIO) @@ -905,7 +912,7 @@ getblk_failed: memcpy(new_bh->b_data, s->base, new_bh->b_size); set_buffer_uptodate(new_bh); unlock_buffer(new_bh); - ext4_xattr_cache_insert(new_bh); + ext4_xattr_cache_insert(ext4_mb_cache, new_bh); error = ext4_handle_dirty_xattr_block(handle, inode, new_bh); if (error) @@ -1228,7 +1235,7 @@ int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize, struct ext4_xattr_block_find *bs = NULL; char *buffer = NULL, *b_entry_name = NULL; size_t min_offs, free; - int total_ino, total_blk; + int total_ino; void *base, *start, *end; int extra_isize = 0, error = 0, tried_min_extra_isize = 0; int s_min_extra_isize = le16_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_min_extra_isize); @@ -1286,8 +1293,7 @@ retry: first = BFIRST(bh); end = bh->b_data + bh->b_size; min_offs = end - base; - free = ext4_xattr_free_space(first, &min_offs, base, - &total_blk); + free = ext4_xattr_free_space(first, &min_offs, base, NULL); if (free < new_extra_isize) { if (!tried_min_extra_isize && s_min_extra_isize) { tried_min_extra_isize++; @@ -1495,13 +1501,13 @@ ext4_xattr_put_super(struct super_block *sb) * Returns 0, or a negative error number on failure. */ static void -ext4_xattr_cache_insert(struct buffer_head *bh) +ext4_xattr_cache_insert(struct mb_cache *ext4_mb_cache, struct buffer_head *bh) { __u32 hash = le32_to_cpu(BHDR(bh)->h_hash); struct mb_cache_entry *ce; int error; - ce = mb_cache_entry_alloc(ext4_xattr_cache, GFP_NOFS); + ce = mb_cache_entry_alloc(ext4_mb_cache, GFP_NOFS); if (!ce) { ea_bdebug(bh, "out of memory"); return; @@ -1573,12 +1579,13 @@ ext4_xattr_cache_find(struct inode *inode, struct ext4_xattr_header *header, { __u32 hash = le32_to_cpu(header->h_hash); struct mb_cache_entry *ce; + struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode); if (!header->h_hash) return NULL; /* never share */ ea_idebug(inode, "looking for cached blocks [%x]", (int)hash); again: - ce = mb_cache_entry_find_first(ext4_xattr_cache, inode->i_sb->s_bdev, + ce = mb_cache_entry_find_first(ext4_mb_cache, inode->i_sb->s_bdev, hash); while (ce) { struct buffer_head *bh; @@ -1676,19 +1683,17 @@ static void ext4_xattr_rehash(struct ext4_xattr_header *header, #undef BLOCK_HASH_SHIFT -int __init -ext4_init_xattr(void) +#define HASH_BUCKET_BITS 10 + +struct mb_cache * +ext4_xattr_create_cache(char *name) { - ext4_xattr_cache = mb_cache_create("ext4_xattr", 6); - if (!ext4_xattr_cache) - return -ENOMEM; - return 0; + return mb_cache_create(name, HASH_BUCKET_BITS); } -void -ext4_exit_xattr(void) +void ext4_xattr_destroy_cache(struct mb_cache *cache) { - if (ext4_xattr_cache) - mb_cache_destroy(ext4_xattr_cache); - ext4_xattr_cache = NULL; + if (cache) + mb_cache_destroy(cache); } + diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h index c767dbdd7fc4..29bedf5589f6 100644 --- a/fs/ext4/xattr.h +++ b/fs/ext4/xattr.h @@ -96,8 +96,6 @@ struct ext4_xattr_ibody_find { extern const struct xattr_handler ext4_xattr_user_handler; extern const struct xattr_handler ext4_xattr_trusted_handler; -extern const struct xattr_handler ext4_xattr_acl_access_handler; -extern const struct xattr_handler ext4_xattr_acl_default_handler; extern const struct xattr_handler ext4_xattr_security_handler; extern ssize_t ext4_listxattr(struct dentry *, char *, size_t); @@ -112,9 +110,6 @@ extern void ext4_xattr_put_super(struct super_block *); extern int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize, struct ext4_inode *raw_inode, handle_t *handle); -extern int __init ext4_init_xattr(void); -extern void ext4_exit_xattr(void); - extern const struct xattr_handler *ext4_xattr_handlers[]; extern int ext4_xattr_ibody_find(struct inode *inode, struct ext4_xattr_info *i, @@ -126,6 +121,9 @@ extern int ext4_xattr_ibody_inline_set(handle_t *handle, struct inode *inode, struct ext4_xattr_info *i, struct ext4_xattr_ibody_find *is); +extern struct mb_cache *ext4_xattr_create_cache(char *name); +extern void ext4_xattr_destroy_cache(struct mb_cache *); + #ifdef CONFIG_EXT4_FS_SECURITY extern int ext4_init_security(handle_t *handle, struct inode *inode, struct inode *dir, const struct qstr *qstr); diff --git a/fs/f2fs/Makefile b/fs/f2fs/Makefile index 27a0820340b9..2e35da12d292 100644 --- a/fs/f2fs/Makefile +++ b/fs/f2fs/Makefile @@ -1,6 +1,6 @@ obj-$(CONFIG_F2FS_FS) += f2fs.o -f2fs-y := dir.o file.o inode.o namei.o hash.o super.o +f2fs-y := dir.o file.o inode.o namei.o hash.o super.o inline.o f2fs-y += checkpoint.o gc.o data.o node.o segment.o recovery.o f2fs-$(CONFIG_F2FS_STAT_FS) += debug.o f2fs-$(CONFIG_F2FS_FS_XATTR) += xattr.o diff --git a/fs/f2fs/acl.c b/fs/f2fs/acl.c index d0fc287efeff..e93e4ec7d165 100644 --- a/fs/f2fs/acl.c +++ b/fs/f2fs/acl.c @@ -17,9 +17,6 @@ #include "xattr.h" #include "acl.h" -#define get_inode_mode(i) ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \ - (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) - static inline size_t f2fs_acl_size(int count) { if (count <= 4) { @@ -167,25 +164,17 @@ fail: struct posix_acl *f2fs_get_acl(struct inode *inode, int type) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); int name_index = F2FS_XATTR_INDEX_POSIX_ACL_DEFAULT; void *value = NULL; struct posix_acl *acl; int retval; - if (!test_opt(sbi, POSIX_ACL)) - return NULL; - - acl = get_cached_acl(inode, type); - if (acl != ACL_NOT_CACHED) - return acl; - if (type == ACL_TYPE_ACCESS) name_index = F2FS_XATTR_INDEX_POSIX_ACL_ACCESS; retval = f2fs_getxattr(inode, name_index, "", NULL, 0); if (retval > 0) { - value = kmalloc(retval, GFP_KERNEL); + value = kmalloc(retval, GFP_F2FS_ZERO); if (!value) return ERR_PTR(-ENOMEM); retval = f2fs_getxattr(inode, name_index, "", value, retval); @@ -205,20 +194,20 @@ struct posix_acl *f2fs_get_acl(struct inode *inode, int type) return acl; } -static int f2fs_set_acl(struct inode *inode, int type, +static int __f2fs_set_acl(struct inode *inode, int type, struct posix_acl *acl, struct page *ipage) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); struct f2fs_inode_info *fi = F2FS_I(inode); int name_index; void *value = NULL; size_t size = 0; int error; - if (!test_opt(sbi, POSIX_ACL)) - return 0; - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; + if (acl) { + error = posix_acl_valid(acl); + if (error < 0) + return error; + } switch (type) { case ACL_TYPE_ACCESS: @@ -261,154 +250,31 @@ static int f2fs_set_acl(struct inode *inode, int type, return error; } -int f2fs_init_acl(struct inode *inode, struct inode *dir, struct page *ipage) +int f2fs_set_acl(struct inode *inode, struct posix_acl *acl, int type) { - struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); - struct posix_acl *acl = NULL; - int error = 0; - - if (!S_ISLNK(inode->i_mode)) { - if (test_opt(sbi, POSIX_ACL)) { - acl = f2fs_get_acl(dir, ACL_TYPE_DEFAULT); - if (IS_ERR(acl)) - return PTR_ERR(acl); - } - if (!acl) - inode->i_mode &= ~current_umask(); - } - - if (!test_opt(sbi, POSIX_ACL) || !acl) - goto cleanup; - - if (S_ISDIR(inode->i_mode)) { - error = f2fs_set_acl(inode, ACL_TYPE_DEFAULT, acl, ipage); - if (error) - goto cleanup; - } - error = posix_acl_create(&acl, GFP_KERNEL, &inode->i_mode); - if (error < 0) - return error; - if (error > 0) - error = f2fs_set_acl(inode, ACL_TYPE_ACCESS, acl, ipage); -cleanup: - posix_acl_release(acl); - return error; + return __f2fs_set_acl(inode, type, acl, NULL); } -int f2fs_acl_chmod(struct inode *inode) +int f2fs_init_acl(struct inode *inode, struct inode *dir, struct page *ipage) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); - struct posix_acl *acl; - int error; - umode_t mode = get_inode_mode(inode); - - if (!test_opt(sbi, POSIX_ACL)) - return 0; - if (S_ISLNK(mode)) - return -EOPNOTSUPP; - - acl = f2fs_get_acl(inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl) || !acl) - return PTR_ERR(acl); + struct posix_acl *default_acl, *acl; + int error = 0; - error = posix_acl_chmod(&acl, GFP_KERNEL, mode); + error = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl); if (error) return error; - error = f2fs_set_acl(inode, ACL_TYPE_ACCESS, acl, NULL); - posix_acl_release(acl); - return error; -} - -static size_t f2fs_xattr_list_acl(struct dentry *dentry, char *list, - size_t list_size, const char *name, size_t name_len, int type) -{ - struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb); - const char *xname = POSIX_ACL_XATTR_DEFAULT; - size_t size; - - if (!test_opt(sbi, POSIX_ACL)) - return 0; - - if (type == ACL_TYPE_ACCESS) - xname = POSIX_ACL_XATTR_ACCESS; - - size = strlen(xname) + 1; - if (list && size <= list_size) - memcpy(list, xname, size); - return size; -} - -static int f2fs_xattr_get_acl(struct dentry *dentry, const char *name, - void *buffer, size_t size, int type) -{ - struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb); - struct posix_acl *acl; - int error; - - if (strcmp(name, "") != 0) - return -EINVAL; - if (!test_opt(sbi, POSIX_ACL)) - return -EOPNOTSUPP; - - acl = f2fs_get_acl(dentry->d_inode, type); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (!acl) - return -ENODATA; - error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size); - posix_acl_release(acl); - - return error; -} - -static int f2fs_xattr_set_acl(struct dentry *dentry, const char *name, - const void *value, size_t size, int flags, int type) -{ - struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb); - struct inode *inode = dentry->d_inode; - struct posix_acl *acl = NULL; - int error; - - if (strcmp(name, "") != 0) - return -EINVAL; - if (!test_opt(sbi, POSIX_ACL)) - return -EOPNOTSUPP; - if (!inode_owner_or_capable(inode)) - return -EPERM; - - if (value) { - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl) { - error = posix_acl_valid(acl); - if (error) - goto release_and_out; - } - } else { - acl = NULL; + if (default_acl) { + error = __f2fs_set_acl(inode, ACL_TYPE_DEFAULT, default_acl, + ipage); + posix_acl_release(default_acl); + } + if (acl) { + if (error) + error = __f2fs_set_acl(inode, ACL_TYPE_ACCESS, acl, + ipage); + posix_acl_release(acl); } - error = f2fs_set_acl(inode, type, acl, NULL); - -release_and_out: - posix_acl_release(acl); return error; } - -const struct xattr_handler f2fs_xattr_acl_default_handler = { - .prefix = POSIX_ACL_XATTR_DEFAULT, - .flags = ACL_TYPE_DEFAULT, - .list = f2fs_xattr_list_acl, - .get = f2fs_xattr_get_acl, - .set = f2fs_xattr_set_acl, -}; - -const struct xattr_handler f2fs_xattr_acl_access_handler = { - .prefix = POSIX_ACL_XATTR_ACCESS, - .flags = ACL_TYPE_ACCESS, - .list = f2fs_xattr_list_acl, - .get = f2fs_xattr_get_acl, - .set = f2fs_xattr_set_acl, -}; diff --git a/fs/f2fs/acl.h b/fs/f2fs/acl.h index 49633131e038..e0864651cdc1 100644 --- a/fs/f2fs/acl.h +++ b/fs/f2fs/acl.h @@ -37,18 +37,13 @@ struct f2fs_acl_header { #ifdef CONFIG_F2FS_FS_POSIX_ACL extern struct posix_acl *f2fs_get_acl(struct inode *, int); -extern int f2fs_acl_chmod(struct inode *); +extern int f2fs_set_acl(struct inode *inode, struct posix_acl *acl, int type); extern int f2fs_init_acl(struct inode *, struct inode *, struct page *); #else #define f2fs_check_acl NULL #define f2fs_get_acl NULL #define f2fs_set_acl NULL -static inline int f2fs_acl_chmod(struct inode *inode) -{ - return 0; -} - static inline int f2fs_init_acl(struct inode *inode, struct inode *dir, struct page *page) { diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 5716e5eb4e8e..4aa521aa9bc3 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -30,17 +30,15 @@ static struct kmem_cache *inode_entry_slab; */ struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) { - struct address_space *mapping = sbi->meta_inode->i_mapping; + struct address_space *mapping = META_MAPPING(sbi); struct page *page = NULL; repeat: - page = grab_cache_page(mapping, index); + page = grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS); if (!page) { cond_resched(); goto repeat; } - /* We wait writeback only inside grab_meta_page() */ - wait_on_page_writeback(page); SetPageUptodate(page); return page; } @@ -50,7 +48,7 @@ repeat: */ struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) { - struct address_space *mapping = sbi->meta_inode->i_mapping; + struct address_space *mapping = META_MAPPING(sbi); struct page *page; repeat: page = grab_cache_page(mapping, index); @@ -61,11 +59,12 @@ repeat: if (PageUptodate(page)) goto out; - if (f2fs_readpage(sbi, page, index, READ_SYNC)) + if (f2fs_submit_page_bio(sbi, page, index, + READ_SYNC | REQ_META | REQ_PRIO)) goto repeat; lock_page(page); - if (page->mapping != mapping) { + if (unlikely(page->mapping != mapping)) { f2fs_put_page(page, 1); goto repeat; } @@ -74,54 +73,142 @@ out: return page; } +inline int get_max_meta_blks(struct f2fs_sb_info *sbi, int type) +{ + switch (type) { + case META_NAT: + return NM_I(sbi)->max_nid / NAT_ENTRY_PER_BLOCK; + case META_SIT: + return SIT_BLK_CNT(sbi); + case META_SSA: + case META_CP: + return 0; + default: + BUG(); + } +} + +/* + * Readahead CP/NAT/SIT/SSA pages + */ +int ra_meta_pages(struct f2fs_sb_info *sbi, int start, int nrpages, int type) +{ + block_t prev_blk_addr = 0; + struct page *page; + int blkno = start; + int max_blks = get_max_meta_blks(sbi, type); + + struct f2fs_io_info fio = { + .type = META, + .rw = READ_SYNC | REQ_META | REQ_PRIO + }; + + for (; nrpages-- > 0; blkno++) { + block_t blk_addr; + + switch (type) { + case META_NAT: + /* get nat block addr */ + if (unlikely(blkno >= max_blks)) + blkno = 0; + blk_addr = current_nat_addr(sbi, + blkno * NAT_ENTRY_PER_BLOCK); + break; + case META_SIT: + /* get sit block addr */ + if (unlikely(blkno >= max_blks)) + goto out; + blk_addr = current_sit_addr(sbi, + blkno * SIT_ENTRY_PER_BLOCK); + if (blkno != start && prev_blk_addr + 1 != blk_addr) + goto out; + prev_blk_addr = blk_addr; + break; + case META_SSA: + case META_CP: + /* get ssa/cp block addr */ + blk_addr = blkno; + break; + default: + BUG(); + } + + page = grab_cache_page(META_MAPPING(sbi), blk_addr); + if (!page) + continue; + if (PageUptodate(page)) { + mark_page_accessed(page); + f2fs_put_page(page, 1); + continue; + } + + f2fs_submit_page_mbio(sbi, page, blk_addr, &fio); + mark_page_accessed(page); + f2fs_put_page(page, 0); + } +out: + f2fs_submit_merged_bio(sbi, META, READ); + return blkno - start; +} + static int f2fs_write_meta_page(struct page *page, struct writeback_control *wbc) { struct inode *inode = page->mapping->host; struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); - /* Should not write any meta pages, if any IO error was occurred */ - if (wbc->for_reclaim || sbi->por_doing || - is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ERROR_FLAG)) { - dec_page_count(sbi, F2FS_DIRTY_META); - wbc->pages_skipped++; - set_page_dirty(page); - return AOP_WRITEPAGE_ACTIVATE; - } + if (unlikely(sbi->por_doing)) + goto redirty_out; + if (wbc->for_reclaim) + goto redirty_out; - wait_on_page_writeback(page); + /* Should not write any meta pages, if any IO error was occurred */ + if (unlikely(is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ERROR_FLAG))) + goto no_write; + f2fs_wait_on_page_writeback(page, META); write_meta_page(sbi, page); +no_write: dec_page_count(sbi, F2FS_DIRTY_META); unlock_page(page); return 0; + +redirty_out: + dec_page_count(sbi, F2FS_DIRTY_META); + wbc->pages_skipped++; + account_page_redirty(page); + set_page_dirty(page); + return AOP_WRITEPAGE_ACTIVATE; } static int f2fs_write_meta_pages(struct address_space *mapping, struct writeback_control *wbc) { struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb); - struct block_device *bdev = sbi->sb->s_bdev; - long written; - - if (wbc->for_kupdate) - return 0; + long diff, written; - if (get_pages(sbi, F2FS_DIRTY_META) == 0) - return 0; + /* collect a number of dirty meta pages and write together */ + if (wbc->for_kupdate || + get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META)) + goto skip_write; /* if mounting is failed, skip writing node pages */ mutex_lock(&sbi->cp_mutex); - written = sync_meta_pages(sbi, META, bio_get_nr_vecs(bdev)); + diff = nr_pages_to_write(sbi, META, wbc); + written = sync_meta_pages(sbi, META, wbc->nr_to_write); mutex_unlock(&sbi->cp_mutex); - wbc->nr_to_write -= written; + wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff); + return 0; + +skip_write: + wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META); return 0; } long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, long nr_to_write) { - struct address_space *mapping = sbi->meta_inode->i_mapping; + struct address_space *mapping = META_MAPPING(sbi); pgoff_t index = 0, end = LONG_MAX; struct pagevec pvec; long nwritten = 0; @@ -136,20 +223,33 @@ long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, PAGECACHE_TAG_DIRTY, min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); - if (nr_pages == 0) + if (unlikely(nr_pages == 0)) break; for (i = 0; i < nr_pages; i++) { struct page *page = pvec.pages[i]; + lock_page(page); - f2fs_bug_on(page->mapping != mapping); - f2fs_bug_on(!PageDirty(page)); - clear_page_dirty_for_io(page); + + if (unlikely(page->mapping != mapping)) { +continue_unlock: + unlock_page(page); + continue; + } + if (!PageDirty(page)) { + /* someone wrote it for us */ + goto continue_unlock; + } + + if (!clear_page_dirty_for_io(page)) + goto continue_unlock; + if (f2fs_write_meta_page(page, &wbc)) { unlock_page(page); break; } - if (nwritten++ >= nr_to_write) + nwritten++; + if (unlikely(nwritten >= nr_to_write)) break; } pagevec_release(&pvec); @@ -157,7 +257,7 @@ long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, } if (nwritten) - f2fs_submit_bio(sbi, type, nr_to_write == LONG_MAX); + f2fs_submit_merged_bio(sbi, type, WRITE); return nwritten; } @@ -186,59 +286,50 @@ const struct address_space_operations f2fs_meta_aops = { int acquire_orphan_inode(struct f2fs_sb_info *sbi) { - unsigned int max_orphans; int err = 0; - /* - * considering 512 blocks in a segment 5 blocks are needed for cp - * and log segment summaries. Remaining blocks are used to keep - * orphan entries with the limitation one reserved segment - * for cp pack we can have max 1020*507 orphan entries - */ - max_orphans = (sbi->blocks_per_seg - 5) * F2FS_ORPHANS_PER_BLOCK; - mutex_lock(&sbi->orphan_inode_mutex); - if (sbi->n_orphans >= max_orphans) + spin_lock(&sbi->orphan_inode_lock); + if (unlikely(sbi->n_orphans >= sbi->max_orphans)) err = -ENOSPC; else sbi->n_orphans++; - mutex_unlock(&sbi->orphan_inode_mutex); + spin_unlock(&sbi->orphan_inode_lock); + return err; } void release_orphan_inode(struct f2fs_sb_info *sbi) { - mutex_lock(&sbi->orphan_inode_mutex); + spin_lock(&sbi->orphan_inode_lock); f2fs_bug_on(sbi->n_orphans == 0); sbi->n_orphans--; - mutex_unlock(&sbi->orphan_inode_mutex); + spin_unlock(&sbi->orphan_inode_lock); } void add_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) { - struct list_head *head, *this; - struct orphan_inode_entry *new = NULL, *orphan = NULL; + struct list_head *head; + struct orphan_inode_entry *new, *orphan; - mutex_lock(&sbi->orphan_inode_mutex); + new = f2fs_kmem_cache_alloc(orphan_entry_slab, GFP_ATOMIC); + new->ino = ino; + + spin_lock(&sbi->orphan_inode_lock); head = &sbi->orphan_inode_list; - list_for_each(this, head) { - orphan = list_entry(this, struct orphan_inode_entry, list); - if (orphan->ino == ino) - goto out; + list_for_each_entry(orphan, head, list) { + if (orphan->ino == ino) { + spin_unlock(&sbi->orphan_inode_lock); + kmem_cache_free(orphan_entry_slab, new); + return; + } + if (orphan->ino > ino) break; - orphan = NULL; } - new = f2fs_kmem_cache_alloc(orphan_entry_slab, GFP_ATOMIC); - new->ino = ino; - - /* add new_oentry into list which is sorted by inode number */ - if (orphan) - list_add(&new->list, this->prev); - else - list_add_tail(&new->list, head); -out: - mutex_unlock(&sbi->orphan_inode_mutex); + /* add new orphan entry into list which is sorted by inode number */ + list_add_tail(&new->list, &orphan->list); + spin_unlock(&sbi->orphan_inode_lock); } void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) @@ -246,18 +337,19 @@ void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) struct list_head *head; struct orphan_inode_entry *orphan; - mutex_lock(&sbi->orphan_inode_mutex); + spin_lock(&sbi->orphan_inode_lock); head = &sbi->orphan_inode_list; list_for_each_entry(orphan, head, list) { if (orphan->ino == ino) { list_del(&orphan->list); - kmem_cache_free(orphan_entry_slab, orphan); f2fs_bug_on(sbi->n_orphans == 0); sbi->n_orphans--; - break; + spin_unlock(&sbi->orphan_inode_lock); + kmem_cache_free(orphan_entry_slab, orphan); + return; } } - mutex_unlock(&sbi->orphan_inode_mutex); + spin_unlock(&sbi->orphan_inode_lock); } static void recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) @@ -270,17 +362,19 @@ static void recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) iput(inode); } -int recover_orphan_inodes(struct f2fs_sb_info *sbi) +void recover_orphan_inodes(struct f2fs_sb_info *sbi) { block_t start_blk, orphan_blkaddr, i, j; if (!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG)) - return 0; + return; sbi->por_doing = true; start_blk = __start_cp_addr(sbi) + 1; orphan_blkaddr = __start_sum_addr(sbi) - 1; + ra_meta_pages(sbi, start_blk, orphan_blkaddr, META_CP); + for (i = 0; i < orphan_blkaddr; i++) { struct page *page = get_meta_page(sbi, start_blk + i); struct f2fs_orphan_block *orphan_blk; @@ -295,29 +389,39 @@ int recover_orphan_inodes(struct f2fs_sb_info *sbi) /* clear Orphan Flag */ clear_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG); sbi->por_doing = false; - return 0; + return; } static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) { - struct list_head *head, *this, *next; + struct list_head *head; struct f2fs_orphan_block *orphan_blk = NULL; - struct page *page = NULL; unsigned int nentries = 0; - unsigned short index = 1; - unsigned short orphan_blocks; - - orphan_blocks = (unsigned short)((sbi->n_orphans + + unsigned short index; + unsigned short orphan_blocks = (unsigned short)((sbi->n_orphans + (F2FS_ORPHANS_PER_BLOCK - 1)) / F2FS_ORPHANS_PER_BLOCK); + struct page *page = NULL; + struct orphan_inode_entry *orphan = NULL; - mutex_lock(&sbi->orphan_inode_mutex); + for (index = 0; index < orphan_blocks; index++) + grab_meta_page(sbi, start_blk + index); + + index = 1; + spin_lock(&sbi->orphan_inode_lock); head = &sbi->orphan_inode_list; /* loop for each orphan inode entry and write them in Jornal block */ - list_for_each_safe(this, next, head) { - struct orphan_inode_entry *orphan; + list_for_each_entry(orphan, head, list) { + if (!page) { + page = find_get_page(META_MAPPING(sbi), start_blk++); + f2fs_bug_on(!page); + orphan_blk = + (struct f2fs_orphan_block *)page_address(page); + memset(orphan_blk, 0, sizeof(*orphan_blk)); + f2fs_put_page(page, 0); + } - orphan = list_entry(this, struct orphan_inode_entry, list); + orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino); if (nentries == F2FS_ORPHANS_PER_BLOCK) { /* @@ -331,29 +435,20 @@ static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) set_page_dirty(page); f2fs_put_page(page, 1); index++; - start_blk++; nentries = 0; page = NULL; } - if (page) - goto page_exist; + } - page = grab_meta_page(sbi, start_blk); - orphan_blk = (struct f2fs_orphan_block *)page_address(page); - memset(orphan_blk, 0, sizeof(*orphan_blk)); -page_exist: - orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino); + if (page) { + orphan_blk->blk_addr = cpu_to_le16(index); + orphan_blk->blk_count = cpu_to_le16(orphan_blocks); + orphan_blk->entry_count = cpu_to_le32(nentries); + set_page_dirty(page); + f2fs_put_page(page, 1); } - if (!page) - goto end; - orphan_blk->blk_addr = cpu_to_le16(index); - orphan_blk->blk_count = cpu_to_le16(orphan_blocks); - orphan_blk->entry_count = cpu_to_le32(nentries); - set_page_dirty(page); - f2fs_put_page(page, 1); -end: - mutex_unlock(&sbi->orphan_inode_mutex); + spin_unlock(&sbi->orphan_inode_lock); } static struct page *validate_checkpoint(struct f2fs_sb_info *sbi, @@ -428,7 +523,8 @@ int get_valid_checkpoint(struct f2fs_sb_info *sbi) cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version); /* The second checkpoint pack should start at the next segment */ - cp_start_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg); + cp_start_blk_no += ((unsigned long long)1) << + le32_to_cpu(fsb->log_blocks_per_seg); cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version); if (cp1 && cp2) { @@ -460,14 +556,12 @@ static int __add_dirty_inode(struct inode *inode, struct dir_inode_entry *new) { struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); struct list_head *head = &sbi->dir_inode_list; - struct list_head *this; + struct dir_inode_entry *entry; - list_for_each(this, head) { - struct dir_inode_entry *entry; - entry = list_entry(this, struct dir_inode_entry, list); - if (entry->inode == inode) + list_for_each_entry(entry, head, list) + if (unlikely(entry->inode == inode)) return -EEXIST; - } + list_add_tail(&new->list, head); stat_inc_dirty_dir(sbi); return 0; @@ -477,6 +571,7 @@ void set_dirty_dir_page(struct inode *inode, struct page *page) { struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); struct dir_inode_entry *new; + int ret = 0; if (!S_ISDIR(inode->i_mode)) return; @@ -486,13 +581,13 @@ void set_dirty_dir_page(struct inode *inode, struct page *page) INIT_LIST_HEAD(&new->list); spin_lock(&sbi->dir_inode_lock); - if (__add_dirty_inode(inode, new)) - kmem_cache_free(inode_entry_slab, new); - - inc_page_count(sbi, F2FS_DIRTY_DENTS); + ret = __add_dirty_inode(inode, new); inode_inc_dirty_dents(inode); SetPagePrivate(page); spin_unlock(&sbi->dir_inode_lock); + + if (ret) + kmem_cache_free(inode_entry_slab, new); } void add_dirty_dir_inode(struct inode *inode) @@ -500,43 +595,47 @@ void add_dirty_dir_inode(struct inode *inode) struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); struct dir_inode_entry *new = f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); + int ret = 0; new->inode = inode; INIT_LIST_HEAD(&new->list); spin_lock(&sbi->dir_inode_lock); - if (__add_dirty_inode(inode, new)) - kmem_cache_free(inode_entry_slab, new); + ret = __add_dirty_inode(inode, new); spin_unlock(&sbi->dir_inode_lock); + + if (ret) + kmem_cache_free(inode_entry_slab, new); } void remove_dirty_dir_inode(struct inode *inode) { struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); - struct list_head *head = &sbi->dir_inode_list; - struct list_head *this; + struct list_head *head; + struct dir_inode_entry *entry; if (!S_ISDIR(inode->i_mode)) return; spin_lock(&sbi->dir_inode_lock); - if (atomic_read(&F2FS_I(inode)->dirty_dents)) { + if (get_dirty_dents(inode)) { spin_unlock(&sbi->dir_inode_lock); return; } - list_for_each(this, head) { - struct dir_inode_entry *entry; - entry = list_entry(this, struct dir_inode_entry, list); + head = &sbi->dir_inode_list; + list_for_each_entry(entry, head, list) { if (entry->inode == inode) { list_del(&entry->list); - kmem_cache_free(inode_entry_slab, entry); stat_dec_dirty_dir(sbi); - break; + spin_unlock(&sbi->dir_inode_lock); + kmem_cache_free(inode_entry_slab, entry); + goto done; } } spin_unlock(&sbi->dir_inode_lock); +done: /* Only from the recovery routine */ if (is_inode_flag_set(F2FS_I(inode), FI_DELAY_IPUT)) { clear_inode_flag(F2FS_I(inode), FI_DELAY_IPUT); @@ -546,14 +645,15 @@ void remove_dirty_dir_inode(struct inode *inode) struct inode *check_dirty_dir_inode(struct f2fs_sb_info *sbi, nid_t ino) { - struct list_head *head = &sbi->dir_inode_list; - struct list_head *this; + + struct list_head *head; struct inode *inode = NULL; + struct dir_inode_entry *entry; spin_lock(&sbi->dir_inode_lock); - list_for_each(this, head) { - struct dir_inode_entry *entry; - entry = list_entry(this, struct dir_inode_entry, list); + + head = &sbi->dir_inode_list; + list_for_each_entry(entry, head, list) { if (entry->inode->i_ino == ino) { inode = entry->inode; break; @@ -565,11 +665,13 @@ struct inode *check_dirty_dir_inode(struct f2fs_sb_info *sbi, nid_t ino) void sync_dirty_dir_inodes(struct f2fs_sb_info *sbi) { - struct list_head *head = &sbi->dir_inode_list; + struct list_head *head; struct dir_inode_entry *entry; struct inode *inode; retry: spin_lock(&sbi->dir_inode_lock); + + head = &sbi->dir_inode_list; if (list_empty(head)) { spin_unlock(&sbi->dir_inode_lock); return; @@ -578,14 +680,14 @@ retry: inode = igrab(entry->inode); spin_unlock(&sbi->dir_inode_lock); if (inode) { - filemap_flush(inode->i_mapping); + filemap_fdatawrite(inode->i_mapping); iput(inode); } else { /* * We should submit bio, since it exists several * wribacking dentry pages in the freeing inode. */ - f2fs_submit_bio(sbi, DATA, true); + f2fs_submit_merged_bio(sbi, DATA, WRITE); } goto retry; } @@ -760,8 +862,8 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) /* wait for previous submitted node/meta pages writeback */ wait_on_all_pages_writeback(sbi); - filemap_fdatawait_range(sbi->node_inode->i_mapping, 0, LONG_MAX); - filemap_fdatawait_range(sbi->meta_inode->i_mapping, 0, LONG_MAX); + filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LONG_MAX); + filemap_fdatawait_range(META_MAPPING(sbi), 0, LONG_MAX); /* update user_block_counts */ sbi->last_valid_block_count = sbi->total_valid_block_count; @@ -770,7 +872,7 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) /* Here, we only have one bio having CP pack */ sync_meta_pages(sbi, META_FLUSH, LONG_MAX); - if (!is_set_ckpt_flags(ckpt, CP_ERROR_FLAG)) { + if (unlikely(!is_set_ckpt_flags(ckpt, CP_ERROR_FLAG))) { clear_prefree_segments(sbi); F2FS_RESET_SB_DIRT(sbi); } @@ -791,9 +893,9 @@ void write_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) trace_f2fs_write_checkpoint(sbi->sb, is_umount, "finish block_ops"); - f2fs_submit_bio(sbi, DATA, true); - f2fs_submit_bio(sbi, NODE, true); - f2fs_submit_bio(sbi, META, true); + f2fs_submit_merged_bio(sbi, DATA, WRITE); + f2fs_submit_merged_bio(sbi, NODE, WRITE); + f2fs_submit_merged_bio(sbi, META, WRITE); /* * update checkpoint pack index @@ -813,25 +915,34 @@ void write_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) unblock_operations(sbi); mutex_unlock(&sbi->cp_mutex); + stat_inc_cp_count(sbi->stat_info); trace_f2fs_write_checkpoint(sbi->sb, is_umount, "finish checkpoint"); } void init_orphan_info(struct f2fs_sb_info *sbi) { - mutex_init(&sbi->orphan_inode_mutex); + spin_lock_init(&sbi->orphan_inode_lock); INIT_LIST_HEAD(&sbi->orphan_inode_list); sbi->n_orphans = 0; + /* + * considering 512 blocks in a segment 8 blocks are needed for cp + * and log segment summaries. Remaining blocks are used to keep + * orphan entries with the limitation one reserved segment + * for cp pack we can have max 1020*504 orphan entries + */ + sbi->max_orphans = (sbi->blocks_per_seg - 2 - NR_CURSEG_TYPE) + * F2FS_ORPHANS_PER_BLOCK; } int __init create_checkpoint_caches(void) { orphan_entry_slab = f2fs_kmem_cache_create("f2fs_orphan_entry", - sizeof(struct orphan_inode_entry), NULL); - if (unlikely(!orphan_entry_slab)) + sizeof(struct orphan_inode_entry)); + if (!orphan_entry_slab) return -ENOMEM; inode_entry_slab = f2fs_kmem_cache_create("f2fs_dirty_dir_entry", - sizeof(struct dir_inode_entry), NULL); - if (unlikely(!inode_entry_slab)) { + sizeof(struct dir_inode_entry)); + if (!inode_entry_slab) { kmem_cache_destroy(orphan_entry_slab); return -ENOMEM; } diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index aa3438c571fa..45abd60e2bff 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -24,6 +24,190 @@ #include "segment.h" #include <trace/events/f2fs.h> +static void f2fs_read_end_io(struct bio *bio, int err) +{ + struct bio_vec *bvec; + int i; + + bio_for_each_segment_all(bvec, bio, i) { + struct page *page = bvec->bv_page; + + if (!err) { + SetPageUptodate(page); + } else { + ClearPageUptodate(page); + SetPageError(page); + } + unlock_page(page); + } + bio_put(bio); +} + +static void f2fs_write_end_io(struct bio *bio, int err) +{ + struct f2fs_sb_info *sbi = bio->bi_private; + struct bio_vec *bvec; + int i; + + bio_for_each_segment_all(bvec, bio, i) { + struct page *page = bvec->bv_page; + + if (unlikely(err)) { + SetPageError(page); + set_bit(AS_EIO, &page->mapping->flags); + f2fs_stop_checkpoint(sbi); + } + end_page_writeback(page); + dec_page_count(sbi, F2FS_WRITEBACK); + } + + if (sbi->wait_io) { + complete(sbi->wait_io); + sbi->wait_io = NULL; + } + + if (!get_pages(sbi, F2FS_WRITEBACK) && + !list_empty(&sbi->cp_wait.task_list)) + wake_up(&sbi->cp_wait); + + bio_put(bio); +} + +/* + * Low-level block read/write IO operations. + */ +static struct bio *__bio_alloc(struct f2fs_sb_info *sbi, block_t blk_addr, + int npages, bool is_read) +{ + struct bio *bio; + + /* No failure on bio allocation */ + bio = bio_alloc(GFP_NOIO, npages); + + bio->bi_bdev = sbi->sb->s_bdev; + bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(sbi, blk_addr); + bio->bi_end_io = is_read ? f2fs_read_end_io : f2fs_write_end_io; + bio->bi_private = sbi; + + return bio; +} + +static void __submit_merged_bio(struct f2fs_bio_info *io) +{ + struct f2fs_io_info *fio = &io->fio; + int rw; + + if (!io->bio) + return; + + rw = fio->rw; + + if (is_read_io(rw)) { + trace_f2fs_submit_read_bio(io->sbi->sb, rw, + fio->type, io->bio); + submit_bio(rw, io->bio); + } else { + trace_f2fs_submit_write_bio(io->sbi->sb, rw, + fio->type, io->bio); + /* + * META_FLUSH is only from the checkpoint procedure, and we + * should wait this metadata bio for FS consistency. + */ + if (fio->type == META_FLUSH) { + DECLARE_COMPLETION_ONSTACK(wait); + io->sbi->wait_io = &wait; + submit_bio(rw, io->bio); + wait_for_completion(&wait); + } else { + submit_bio(rw, io->bio); + } + } + + io->bio = NULL; +} + +void f2fs_submit_merged_bio(struct f2fs_sb_info *sbi, + enum page_type type, int rw) +{ + enum page_type btype = PAGE_TYPE_OF_BIO(type); + struct f2fs_bio_info *io; + + io = is_read_io(rw) ? &sbi->read_io : &sbi->write_io[btype]; + + down_write(&io->io_rwsem); + + /* change META to META_FLUSH in the checkpoint procedure */ + if (type >= META_FLUSH) { + io->fio.type = META_FLUSH; + io->fio.rw = WRITE_FLUSH_FUA | REQ_META | REQ_PRIO; + } + __submit_merged_bio(io); + up_write(&io->io_rwsem); +} + +/* + * Fill the locked page with data located in the block address. + * Return unlocked page. + */ +int f2fs_submit_page_bio(struct f2fs_sb_info *sbi, struct page *page, + block_t blk_addr, int rw) +{ + struct bio *bio; + + trace_f2fs_submit_page_bio(page, blk_addr, rw); + + /* Allocate a new bio */ + bio = __bio_alloc(sbi, blk_addr, 1, is_read_io(rw)); + + if (bio_add_page(bio, page, PAGE_CACHE_SIZE, 0) < PAGE_CACHE_SIZE) { + bio_put(bio); + f2fs_put_page(page, 1); + return -EFAULT; + } + + submit_bio(rw, bio); + return 0; +} + +void f2fs_submit_page_mbio(struct f2fs_sb_info *sbi, struct page *page, + block_t blk_addr, struct f2fs_io_info *fio) +{ + enum page_type btype = PAGE_TYPE_OF_BIO(fio->type); + struct f2fs_bio_info *io; + bool is_read = is_read_io(fio->rw); + + io = is_read ? &sbi->read_io : &sbi->write_io[btype]; + + verify_block_addr(sbi, blk_addr); + + down_write(&io->io_rwsem); + + if (!is_read) + inc_page_count(sbi, F2FS_WRITEBACK); + + if (io->bio && (io->last_block_in_bio != blk_addr - 1 || + io->fio.rw != fio->rw)) + __submit_merged_bio(io); +alloc_new: + if (io->bio == NULL) { + int bio_blocks = MAX_BIO_BLOCKS(max_hw_blocks(sbi)); + + io->bio = __bio_alloc(sbi, blk_addr, bio_blocks, is_read); + io->fio = *fio; + } + + if (bio_add_page(io->bio, page, PAGE_CACHE_SIZE, 0) < + PAGE_CACHE_SIZE) { + __submit_merged_bio(io); + goto alloc_new; + } + + io->last_block_in_bio = blk_addr; + + up_write(&io->io_rwsem); + trace_f2fs_submit_page_mbio(page, fio->rw, fio->type, blk_addr); +} + /* * Lock ordering for the change of data block address: * ->data_page @@ -37,7 +221,7 @@ static void __set_data_blkaddr(struct dnode_of_data *dn, block_t new_addr) struct page *node_page = dn->node_page; unsigned int ofs_in_node = dn->ofs_in_node; - f2fs_wait_on_page_writeback(node_page, NODE, false); + f2fs_wait_on_page_writeback(node_page, NODE); rn = F2FS_NODE(node_page); @@ -51,19 +235,39 @@ int reserve_new_block(struct dnode_of_data *dn) { struct f2fs_sb_info *sbi = F2FS_SB(dn->inode->i_sb); - if (is_inode_flag_set(F2FS_I(dn->inode), FI_NO_ALLOC)) + if (unlikely(is_inode_flag_set(F2FS_I(dn->inode), FI_NO_ALLOC))) return -EPERM; - if (!inc_valid_block_count(sbi, dn->inode, 1)) + if (unlikely(!inc_valid_block_count(sbi, dn->inode, 1))) return -ENOSPC; trace_f2fs_reserve_new_block(dn->inode, dn->nid, dn->ofs_in_node); __set_data_blkaddr(dn, NEW_ADDR); dn->data_blkaddr = NEW_ADDR; + mark_inode_dirty(dn->inode); sync_inode_page(dn); return 0; } +int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index) +{ + bool need_put = dn->inode_page ? false : true; + int err; + + /* if inode_page exists, index should be zero */ + f2fs_bug_on(!need_put && index); + + err = get_dnode_of_data(dn, index, ALLOC_NODE); + if (err) + return err; + + if (dn->data_blkaddr == NULL_ADDR) + err = reserve_new_block(dn); + if (err || need_put) + f2fs_put_dnode(dn); + return err; +} + static int check_extent_cache(struct inode *inode, pgoff_t pgofs, struct buffer_head *bh_result) { @@ -71,6 +275,9 @@ static int check_extent_cache(struct inode *inode, pgoff_t pgofs, pgoff_t start_fofs, end_fofs; block_t start_blkaddr; + if (is_inode_flag_set(fi, FI_NO_EXTENT)) + return 0; + read_lock(&fi->ext.ext_lock); if (fi->ext.len == 0) { read_unlock(&fi->ext.ext_lock); @@ -109,6 +316,7 @@ void update_extent_cache(block_t blk_addr, struct dnode_of_data *dn) struct f2fs_inode_info *fi = F2FS_I(dn->inode); pgoff_t fofs, start_fofs, end_fofs; block_t start_blkaddr, end_blkaddr; + int need_update = true; f2fs_bug_on(blk_addr == NEW_ADDR); fofs = start_bidx_of_node(ofs_of_node(dn->node_page), fi) + @@ -117,6 +325,9 @@ void update_extent_cache(block_t blk_addr, struct dnode_of_data *dn) /* Update the page address in the parent node */ __set_data_blkaddr(dn, blk_addr); + if (is_inode_flag_set(fi, FI_NO_EXTENT)) + return; + write_lock(&fi->ext.ext_lock); start_fofs = fi->ext.fofs; @@ -163,14 +374,21 @@ void update_extent_cache(block_t blk_addr, struct dnode_of_data *dn) fofs - start_fofs + 1; fi->ext.len -= fofs - start_fofs + 1; } - goto end_update; + } else { + need_update = false; } - write_unlock(&fi->ext.ext_lock); - return; + /* Finally, if the extent is very fragmented, let's drop the cache. */ + if (fi->ext.len < F2FS_MIN_EXTENT_LEN) { + fi->ext.len = 0; + set_inode_flag(fi, FI_NO_EXTENT); + need_update = true; + } end_update: write_unlock(&fi->ext.ext_lock); - sync_inode_page(dn); + if (need_update) + sync_inode_page(dn); + return; } struct page *find_data_page(struct inode *inode, pgoff_t index, bool sync) @@ -196,7 +414,7 @@ struct page *find_data_page(struct inode *inode, pgoff_t index, bool sync) return ERR_PTR(-ENOENT); /* By fallocate(), there is no cached page, but with NEW_ADDR */ - if (dn.data_blkaddr == NEW_ADDR) + if (unlikely(dn.data_blkaddr == NEW_ADDR)) return ERR_PTR(-EINVAL); page = grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS); @@ -208,11 +426,14 @@ struct page *find_data_page(struct inode *inode, pgoff_t index, bool sync) return page; } - err = f2fs_readpage(sbi, page, dn.data_blkaddr, + err = f2fs_submit_page_bio(sbi, page, dn.data_blkaddr, sync ? READ_SYNC : READA); + if (err) + return ERR_PTR(err); + if (sync) { wait_on_page_locked(page); - if (!PageUptodate(page)) { + if (unlikely(!PageUptodate(page))) { f2fs_put_page(page, 0); return ERR_PTR(-EIO); } @@ -246,7 +467,7 @@ repeat: } f2fs_put_dnode(&dn); - if (dn.data_blkaddr == NULL_ADDR) { + if (unlikely(dn.data_blkaddr == NULL_ADDR)) { f2fs_put_page(page, 1); return ERR_PTR(-ENOENT); } @@ -266,16 +487,16 @@ repeat: return page; } - err = f2fs_readpage(sbi, page, dn.data_blkaddr, READ_SYNC); + err = f2fs_submit_page_bio(sbi, page, dn.data_blkaddr, READ_SYNC); if (err) return ERR_PTR(err); lock_page(page); - if (!PageUptodate(page)) { + if (unlikely(!PageUptodate(page))) { f2fs_put_page(page, 1); return ERR_PTR(-EIO); } - if (page->mapping != mapping) { + if (unlikely(page->mapping != mapping)) { f2fs_put_page(page, 1); goto repeat; } @@ -286,12 +507,12 @@ repeat: * Caller ensures that this data page is never allocated. * A new zero-filled data page is allocated in the page cache. * - * Also, caller should grab and release a mutex by calling mutex_lock_op() and - * mutex_unlock_op(). - * Note that, npage is set only by make_empty_dir. + * Also, caller should grab and release a rwsem by calling f2fs_lock_op() and + * f2fs_unlock_op(). + * Note that, ipage is set only by make_empty_dir. */ struct page *get_new_data_page(struct inode *inode, - struct page *npage, pgoff_t index, bool new_i_size) + struct page *ipage, pgoff_t index, bool new_i_size) { struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); struct address_space *mapping = inode->i_mapping; @@ -299,24 +520,16 @@ struct page *get_new_data_page(struct inode *inode, struct dnode_of_data dn; int err; - set_new_dnode(&dn, inode, npage, npage, 0); - err = get_dnode_of_data(&dn, index, ALLOC_NODE); + set_new_dnode(&dn, inode, ipage, NULL, 0); + err = f2fs_reserve_block(&dn, index); if (err) return ERR_PTR(err); - - if (dn.data_blkaddr == NULL_ADDR) { - if (reserve_new_block(&dn)) { - if (!npage) - f2fs_put_dnode(&dn); - return ERR_PTR(-ENOSPC); - } - } - if (!npage) - f2fs_put_dnode(&dn); repeat: page = grab_cache_page(mapping, index); - if (!page) - return ERR_PTR(-ENOMEM); + if (!page) { + err = -ENOMEM; + goto put_err; + } if (PageUptodate(page)) return page; @@ -325,15 +538,18 @@ repeat: zero_user_segment(page, 0, PAGE_CACHE_SIZE); SetPageUptodate(page); } else { - err = f2fs_readpage(sbi, page, dn.data_blkaddr, READ_SYNC); + err = f2fs_submit_page_bio(sbi, page, dn.data_blkaddr, + READ_SYNC); if (err) - return ERR_PTR(err); + goto put_err; + lock_page(page); - if (!PageUptodate(page)) { + if (unlikely(!PageUptodate(page))) { f2fs_put_page(page, 1); - return ERR_PTR(-EIO); + err = -EIO; + goto put_err; } - if (page->mapping != mapping) { + if (unlikely(page->mapping != mapping)) { f2fs_put_page(page, 1); goto repeat; } @@ -344,140 +560,187 @@ repeat: i_size_write(inode, ((index + 1) << PAGE_CACHE_SHIFT)); /* Only the directory inode sets new_i_size */ set_inode_flag(F2FS_I(inode), FI_UPDATE_DIR); - mark_inode_dirty_sync(inode); } return page; -} - -static void read_end_io(struct bio *bio, int err) -{ - const int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); - struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1; - - do { - struct page *page = bvec->bv_page; - - if (--bvec >= bio->bi_io_vec) - prefetchw(&bvec->bv_page->flags); - if (uptodate) { - SetPageUptodate(page); - } else { - ClearPageUptodate(page); - SetPageError(page); - } - unlock_page(page); - } while (bvec >= bio->bi_io_vec); - bio_put(bio); +put_err: + f2fs_put_dnode(&dn); + return ERR_PTR(err); } -/* - * Fill the locked page with data located in the block address. - * Return unlocked page. - */ -int f2fs_readpage(struct f2fs_sb_info *sbi, struct page *page, - block_t blk_addr, int type) +static int __allocate_data_block(struct dnode_of_data *dn) { - struct block_device *bdev = sbi->sb->s_bdev; - struct bio *bio; + struct f2fs_sb_info *sbi = F2FS_SB(dn->inode->i_sb); + struct f2fs_summary sum; + block_t new_blkaddr; + struct node_info ni; + int type; - trace_f2fs_readpage(page, blk_addr, type); + if (unlikely(is_inode_flag_set(F2FS_I(dn->inode), FI_NO_ALLOC))) + return -EPERM; + if (unlikely(!inc_valid_block_count(sbi, dn->inode, 1))) + return -ENOSPC; - down_read(&sbi->bio_sem); + __set_data_blkaddr(dn, NEW_ADDR); + dn->data_blkaddr = NEW_ADDR; - /* Allocate a new bio */ - bio = f2fs_bio_alloc(bdev, 1); + get_node_info(sbi, dn->nid, &ni); + set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); - /* Initialize the bio */ - bio->bi_sector = SECTOR_FROM_BLOCK(sbi, blk_addr); - bio->bi_end_io = read_end_io; + type = CURSEG_WARM_DATA; - if (bio_add_page(bio, page, PAGE_CACHE_SIZE, 0) < PAGE_CACHE_SIZE) { - bio_put(bio); - up_read(&sbi->bio_sem); - f2fs_put_page(page, 1); - return -EFAULT; - } + allocate_data_block(sbi, NULL, NULL_ADDR, &new_blkaddr, &sum, type); - submit_bio(type, bio); - up_read(&sbi->bio_sem); + /* direct IO doesn't use extent cache to maximize the performance */ + set_inode_flag(F2FS_I(dn->inode), FI_NO_EXTENT); + update_extent_cache(new_blkaddr, dn); + clear_inode_flag(F2FS_I(dn->inode), FI_NO_EXTENT); + + dn->data_blkaddr = new_blkaddr; return 0; } /* - * This function should be used by the data read flow only where it - * does not check the "create" flag that indicates block allocation. - * The reason for this special functionality is to exploit VFS readahead - * mechanism. + * get_data_block() now supported readahead/bmap/rw direct_IO with mapped bh. + * If original data blocks are allocated, then give them to blockdev. + * Otherwise, + * a. preallocate requested block addresses + * b. do not use extent cache for better performance + * c. give the block addresses to blockdev */ -static int get_data_block_ro(struct inode *inode, sector_t iblock, +static int get_data_block(struct inode *inode, sector_t iblock, struct buffer_head *bh_result, int create) { + struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); unsigned int blkbits = inode->i_sb->s_blocksize_bits; unsigned maxblocks = bh_result->b_size >> blkbits; struct dnode_of_data dn; - pgoff_t pgofs; - int err; + int mode = create ? ALLOC_NODE : LOOKUP_NODE_RA; + pgoff_t pgofs, end_offset; + int err = 0, ofs = 1; + bool allocated = false; /* Get the page offset from the block offset(iblock) */ pgofs = (pgoff_t)(iblock >> (PAGE_CACHE_SHIFT - blkbits)); - if (check_extent_cache(inode, pgofs, bh_result)) { - trace_f2fs_get_data_block(inode, iblock, bh_result, 0); - return 0; - } + if (check_extent_cache(inode, pgofs, bh_result)) + goto out; + + if (create) + f2fs_lock_op(sbi); /* When reading holes, we need its node page */ set_new_dnode(&dn, inode, NULL, NULL, 0); - err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA); + err = get_dnode_of_data(&dn, pgofs, mode); if (err) { - trace_f2fs_get_data_block(inode, iblock, bh_result, err); - return (err == -ENOENT) ? 0 : err; + if (err == -ENOENT) + err = 0; + goto unlock_out; + } + if (dn.data_blkaddr == NEW_ADDR) + goto put_out; + + if (dn.data_blkaddr != NULL_ADDR) { + map_bh(bh_result, inode->i_sb, dn.data_blkaddr); + } else if (create) { + err = __allocate_data_block(&dn); + if (err) + goto put_out; + allocated = true; + map_bh(bh_result, inode->i_sb, dn.data_blkaddr); + } else { + goto put_out; } - /* It does not support data allocation */ - f2fs_bug_on(create); + end_offset = IS_INODE(dn.node_page) ? + ADDRS_PER_INODE(F2FS_I(inode)) : ADDRS_PER_BLOCK; + bh_result->b_size = (((size_t)1) << blkbits); + dn.ofs_in_node++; + pgofs++; + +get_next: + if (dn.ofs_in_node >= end_offset) { + if (allocated) + sync_inode_page(&dn); + allocated = false; + f2fs_put_dnode(&dn); - if (dn.data_blkaddr != NEW_ADDR && dn.data_blkaddr != NULL_ADDR) { - int i; - unsigned int end_offset; + set_new_dnode(&dn, inode, NULL, NULL, 0); + err = get_dnode_of_data(&dn, pgofs, mode); + if (err) { + if (err == -ENOENT) + err = 0; + goto unlock_out; + } + if (dn.data_blkaddr == NEW_ADDR) + goto put_out; end_offset = IS_INODE(dn.node_page) ? - ADDRS_PER_INODE(F2FS_I(inode)) : - ADDRS_PER_BLOCK; - - clear_buffer_new(bh_result); + ADDRS_PER_INODE(F2FS_I(inode)) : ADDRS_PER_BLOCK; + } + if (maxblocks > (bh_result->b_size >> blkbits)) { + block_t blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); + if (blkaddr == NULL_ADDR && create) { + err = __allocate_data_block(&dn); + if (err) + goto sync_out; + allocated = true; + blkaddr = dn.data_blkaddr; + } /* Give more consecutive addresses for the read ahead */ - for (i = 0; i < end_offset - dn.ofs_in_node; i++) - if (((datablock_addr(dn.node_page, - dn.ofs_in_node + i)) - != (dn.data_blkaddr + i)) || maxblocks == i) - break; - map_bh(bh_result, inode->i_sb, dn.data_blkaddr); - bh_result->b_size = (i << blkbits); + if (blkaddr == (bh_result->b_blocknr + ofs)) { + ofs++; + dn.ofs_in_node++; + pgofs++; + bh_result->b_size += (((size_t)1) << blkbits); + goto get_next; + } } +sync_out: + if (allocated) + sync_inode_page(&dn); +put_out: f2fs_put_dnode(&dn); - trace_f2fs_get_data_block(inode, iblock, bh_result, 0); - return 0; +unlock_out: + if (create) + f2fs_unlock_op(sbi); +out: + trace_f2fs_get_data_block(inode, iblock, bh_result, err); + return err; } static int f2fs_read_data_page(struct file *file, struct page *page) { - return mpage_readpage(page, get_data_block_ro); + struct inode *inode = page->mapping->host; + int ret; + + /* If the file has inline data, try to read it directlly */ + if (f2fs_has_inline_data(inode)) + ret = f2fs_read_inline_data(inode, page); + else + ret = mpage_readpage(page, get_data_block); + + return ret; } static int f2fs_read_data_pages(struct file *file, struct address_space *mapping, struct list_head *pages, unsigned nr_pages) { - return mpage_readpages(mapping, pages, nr_pages, get_data_block_ro); + struct inode *inode = file->f_mapping->host; + + /* If the file has inline data, skip readpages */ + if (f2fs_has_inline_data(inode)) + return 0; + + return mpage_readpages(mapping, pages, nr_pages, get_data_block); } -int do_write_data_page(struct page *page) +int do_write_data_page(struct page *page, struct f2fs_io_info *fio) { struct inode *inode = page->mapping->host; - block_t old_blk_addr, new_blk_addr; + block_t old_blkaddr, new_blkaddr; struct dnode_of_data dn; int err = 0; @@ -486,10 +749,10 @@ int do_write_data_page(struct page *page) if (err) return err; - old_blk_addr = dn.data_blkaddr; + old_blkaddr = dn.data_blkaddr; /* This page is already truncated */ - if (old_blk_addr == NULL_ADDR) + if (old_blkaddr == NULL_ADDR) goto out_writepage; set_page_writeback(page); @@ -498,15 +761,13 @@ int do_write_data_page(struct page *page) * If current allocation needs SSR, * it had better in-place writes for updated data. */ - if (unlikely(old_blk_addr != NEW_ADDR && + if (unlikely(old_blkaddr != NEW_ADDR && !is_cold_data(page) && need_inplace_update(inode))) { - rewrite_data_page(F2FS_SB(inode->i_sb), page, - old_blk_addr); + rewrite_data_page(page, old_blkaddr, fio); } else { - write_data_page(inode, page, &dn, - old_blk_addr, &new_blk_addr); - update_extent_cache(new_blk_addr, &dn); + write_data_page(page, &dn, &new_blkaddr, fio); + update_extent_cache(new_blkaddr, &dn); } out_writepage: f2fs_put_dnode(&dn); @@ -521,9 +782,13 @@ static int f2fs_write_data_page(struct page *page, loff_t i_size = i_size_read(inode); const pgoff_t end_index = ((unsigned long long) i_size) >> PAGE_CACHE_SHIFT; - unsigned offset; + unsigned offset = 0; bool need_balance_fs = false; int err = 0; + struct f2fs_io_info fio = { + .type = DATA, + .rw = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : WRITE, + }; if (page->index < end_index) goto write; @@ -534,38 +799,36 @@ static int f2fs_write_data_page(struct page *page, */ offset = i_size & (PAGE_CACHE_SIZE - 1); if ((page->index >= end_index + 1) || !offset) { - if (S_ISDIR(inode->i_mode)) { - dec_page_count(sbi, F2FS_DIRTY_DENTS); - inode_dec_dirty_dents(inode); - } + inode_dec_dirty_dents(inode); goto out; } zero_user_segment(page, offset, PAGE_CACHE_SIZE); write: - if (sbi->por_doing) { - err = AOP_WRITEPAGE_ACTIVATE; + if (unlikely(sbi->por_doing)) goto redirty_out; - } /* Dentry blocks are controlled by checkpoint */ if (S_ISDIR(inode->i_mode)) { - dec_page_count(sbi, F2FS_DIRTY_DENTS); inode_dec_dirty_dents(inode); - err = do_write_data_page(page); - } else { - f2fs_lock_op(sbi); - err = do_write_data_page(page); - f2fs_unlock_op(sbi); - need_balance_fs = true; + err = do_write_data_page(page, &fio); + goto done; } - if (err == -ENOENT) - goto out; - else if (err) + + if (!wbc->for_reclaim) + need_balance_fs = true; + else if (has_not_enough_free_secs(sbi, 0)) goto redirty_out; - if (wbc->for_reclaim) - f2fs_submit_bio(sbi, DATA, true); + f2fs_lock_op(sbi); + if (f2fs_has_inline_data(inode) || f2fs_may_inline(inode)) + err = f2fs_write_inline_data(inode, page, offset); + else + err = do_write_data_page(page, &fio); + f2fs_unlock_op(sbi); +done: + if (err && err != -ENOENT) + goto redirty_out; clear_cold_data(page); out: @@ -576,12 +839,11 @@ out: redirty_out: wbc->pages_skipped++; + account_page_redirty(page); set_page_dirty(page); - return err; + return AOP_WRITEPAGE_ACTIVATE; } -#define MAX_DESIRED_PAGES_WP 4096 - static int __f2fs_writepage(struct page *page, struct writeback_control *wbc, void *data) { @@ -598,17 +860,17 @@ static int f2fs_write_data_pages(struct address_space *mapping, struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); bool locked = false; int ret; - long excess_nrtw = 0, desired_nrtw; + long diff; /* deal with chardevs and other special file */ if (!mapping->a_ops->writepage) return 0; - if (wbc->nr_to_write < MAX_DESIRED_PAGES_WP) { - desired_nrtw = MAX_DESIRED_PAGES_WP; - excess_nrtw = desired_nrtw - wbc->nr_to_write; - wbc->nr_to_write = desired_nrtw; - } + if (S_ISDIR(inode->i_mode) && wbc->sync_mode == WB_SYNC_NONE && + get_dirty_dents(inode) < nr_pages_to_skip(sbi, DATA)) + goto skip_write; + + diff = nr_pages_to_write(sbi, DATA, wbc); if (!S_ISDIR(inode->i_mode)) { mutex_lock(&sbi->writepages); @@ -617,12 +879,17 @@ static int f2fs_write_data_pages(struct address_space *mapping, ret = write_cache_pages(mapping, wbc, __f2fs_writepage, mapping); if (locked) mutex_unlock(&sbi->writepages); - f2fs_submit_bio(sbi, DATA, (wbc->sync_mode == WB_SYNC_ALL)); + + f2fs_submit_merged_bio(sbi, DATA, WRITE); remove_dirty_dir_inode(inode); - wbc->nr_to_write -= excess_nrtw; + wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); return ret; + +skip_write: + wbc->pages_skipped += get_dirty_dents(inode); + return 0; } static int f2fs_write_begin(struct file *file, struct address_space *mapping, @@ -638,27 +905,28 @@ static int f2fs_write_begin(struct file *file, struct address_space *mapping, f2fs_balance_fs(sbi); repeat: + err = f2fs_convert_inline_data(inode, pos + len); + if (err) + return err; + page = grab_cache_page_write_begin(mapping, index, flags); if (!page) return -ENOMEM; *pagep = page; - f2fs_lock_op(sbi); + if (f2fs_has_inline_data(inode) && (pos + len) <= MAX_INLINE_DATA) + goto inline_data; + f2fs_lock_op(sbi); set_new_dnode(&dn, inode, NULL, NULL, 0); - err = get_dnode_of_data(&dn, index, ALLOC_NODE); - if (err) - goto err; - - if (dn.data_blkaddr == NULL_ADDR) - err = reserve_new_block(&dn); - - f2fs_put_dnode(&dn); - if (err) - goto err; - + err = f2fs_reserve_block(&dn, index); f2fs_unlock_op(sbi); + if (err) { + f2fs_put_page(page, 1); + return err; + } +inline_data: if ((len == PAGE_CACHE_SIZE) || PageUptodate(page)) return 0; @@ -674,15 +942,25 @@ repeat: if (dn.data_blkaddr == NEW_ADDR) { zero_user_segment(page, 0, PAGE_CACHE_SIZE); } else { - err = f2fs_readpage(sbi, page, dn.data_blkaddr, READ_SYNC); - if (err) - return err; + if (f2fs_has_inline_data(inode)) { + err = f2fs_read_inline_data(inode, page); + if (err) { + page_cache_release(page); + return err; + } + } else { + err = f2fs_submit_page_bio(sbi, page, dn.data_blkaddr, + READ_SYNC); + if (err) + return err; + } + lock_page(page); - if (!PageUptodate(page)) { + if (unlikely(!PageUptodate(page))) { f2fs_put_page(page, 1); return -EIO; } - if (page->mapping != mapping) { + if (unlikely(page->mapping != mapping)) { f2fs_put_page(page, 1); goto repeat; } @@ -691,11 +969,6 @@ out: SetPageUptodate(page); clear_cold_data(page); return 0; - -err: - f2fs_unlock_op(sbi); - f2fs_put_page(page, 1); - return err; } static int f2fs_write_end(struct file *file, @@ -714,34 +987,51 @@ static int f2fs_write_end(struct file *file, update_inode_page(inode); } - unlock_page(page); - page_cache_release(page); + f2fs_put_page(page, 1); return copied; } +static int check_direct_IO(struct inode *inode, int rw, + const struct iovec *iov, loff_t offset, unsigned long nr_segs) +{ + unsigned blocksize_mask = inode->i_sb->s_blocksize - 1; + int i; + + if (rw == READ) + return 0; + + if (offset & blocksize_mask) + return -EINVAL; + + for (i = 0; i < nr_segs; i++) + if (iov[i].iov_len & blocksize_mask) + return -EINVAL; + return 0; +} + static ssize_t f2fs_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov, loff_t offset, unsigned long nr_segs) { struct file *file = iocb->ki_filp; struct inode *inode = file->f_mapping->host; - if (rw == WRITE) + /* Let buffer I/O handle the inline data case. */ + if (f2fs_has_inline_data(inode)) + return 0; + + if (check_direct_IO(inode, rw, iov, offset, nr_segs)) return 0; - /* Needs synchronization with the cleaner */ return blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs, - get_data_block_ro); + get_data_block); } static void f2fs_invalidate_data_page(struct page *page, unsigned int offset, unsigned int length) { struct inode *inode = page->mapping->host; - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); - if (S_ISDIR(inode->i_mode) && PageDirty(page)) { - dec_page_count(sbi, F2FS_DIRTY_DENTS); + if (PageDirty(page)) inode_dec_dirty_dents(inode); - } ClearPagePrivate(page); } @@ -759,6 +1049,8 @@ static int f2fs_set_data_page_dirty(struct page *page) trace_f2fs_set_page_dirty(page, DATA); SetPageUptodate(page); + mark_inode_dirty(inode); + if (!PageDirty(page)) { __set_page_dirty_nobuffers(page); set_dirty_dir_page(inode, page); @@ -769,7 +1061,7 @@ static int f2fs_set_data_page_dirty(struct page *page) static sector_t f2fs_bmap(struct address_space *mapping, sector_t block) { - return generic_block_bmap(mapping, block, get_data_block_ro); + return generic_block_bmap(mapping, block, get_data_block); } const struct address_space_operations f2fs_dblock_aops = { diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c index a84b0a8e6854..b52c12cf5873 100644 --- a/fs/f2fs/debug.c +++ b/fs/f2fs/debug.c @@ -24,7 +24,7 @@ #include "gc.h" static LIST_HEAD(f2fs_stat_list); -static struct dentry *debugfs_root; +static struct dentry *f2fs_debugfs_root; static DEFINE_MUTEX(f2fs_stat_mutex); static void update_general_status(struct f2fs_sb_info *sbi) @@ -45,14 +45,15 @@ static void update_general_status(struct f2fs_sb_info *sbi) si->valid_count = valid_user_blocks(sbi); si->valid_node_count = valid_node_count(sbi); si->valid_inode_count = valid_inode_count(sbi); + si->inline_inode = sbi->inline_inode; si->utilization = utilization(sbi); si->free_segs = free_segments(sbi); si->free_secs = free_sections(sbi); si->prefree_count = prefree_segments(sbi); si->dirty_count = dirty_segments(sbi); - si->node_pages = sbi->node_inode->i_mapping->nrpages; - si->meta_pages = sbi->meta_inode->i_mapping->nrpages; + si->node_pages = NODE_MAPPING(sbi)->nrpages; + si->meta_pages = META_MAPPING(sbi)->nrpages; si->nats = NM_I(sbi)->nat_cnt; si->sits = SIT_I(sbi)->dirty_sentries; si->fnids = NM_I(sbi)->fcnt; @@ -85,7 +86,6 @@ static void update_sit_info(struct f2fs_sb_info *sbi) { struct f2fs_stat_info *si = F2FS_STAT(sbi); unsigned int blks_per_sec, hblks_per_sec, total_vblocks, bimodal, dist; - struct sit_info *sit_i = SIT_I(sbi); unsigned int segno, vblocks; int ndirty = 0; @@ -93,7 +93,6 @@ static void update_sit_info(struct f2fs_sb_info *sbi) total_vblocks = 0; blks_per_sec = sbi->segs_per_sec * (1 << sbi->log_blocks_per_seg); hblks_per_sec = blks_per_sec / 2; - mutex_lock(&sit_i->sentry_lock); for (segno = 0; segno < TOTAL_SEGS(sbi); segno += sbi->segs_per_sec) { vblocks = get_valid_blocks(sbi, segno, sbi->segs_per_sec); dist = abs(vblocks - hblks_per_sec); @@ -104,7 +103,6 @@ static void update_sit_info(struct f2fs_sb_info *sbi) ndirty++; } } - mutex_unlock(&sit_i->sentry_lock); dist = TOTAL_SECS(sbi) * hblks_per_sec * hblks_per_sec / 100; si->bimodal = bimodal / dist; if (si->dirty_count) @@ -165,9 +163,9 @@ get_cache: /* free nids */ si->cache_mem = NM_I(sbi)->fcnt; si->cache_mem += NM_I(sbi)->nat_cnt; - npages = sbi->node_inode->i_mapping->nrpages; + npages = NODE_MAPPING(sbi)->nrpages; si->cache_mem += npages << PAGE_CACHE_SHIFT; - npages = sbi->meta_inode->i_mapping->nrpages; + npages = META_MAPPING(sbi)->nrpages; si->cache_mem += npages << PAGE_CACHE_SHIFT; si->cache_mem += sbi->n_orphans * sizeof(struct orphan_inode_entry); si->cache_mem += sbi->n_dirty_dirs * sizeof(struct dir_inode_entry); @@ -200,6 +198,8 @@ static int stat_show(struct seq_file *s, void *v) seq_printf(s, "Other: %u)\n - Data: %u\n", si->valid_node_count - si->valid_inode_count, si->valid_count - si->valid_node_count); + seq_printf(s, " - Inline_data Inode: %u\n", + si->inline_inode); seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n", si->main_area_segs, si->main_area_sections, si->main_area_zones); @@ -233,6 +233,7 @@ static int stat_show(struct seq_file *s, void *v) si->dirty_count); seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n", si->prefree_count, si->free_segs, si->free_secs); + seq_printf(s, "CP calls: %d\n", si->cp_count); seq_printf(s, "GC calls: %d (BG: %d)\n", si->call_count, si->bg_gc); seq_printf(s, " - data segments : %d\n", si->data_segs); @@ -242,17 +243,17 @@ static int stat_show(struct seq_file *s, void *v) seq_printf(s, " - node blocks : %d\n", si->node_blks); seq_printf(s, "\nExtent Hit Ratio: %d / %d\n", si->hit_ext, si->total_ext); - seq_printf(s, "\nBalancing F2FS Async:\n"); - seq_printf(s, " - nodes %4d in %4d\n", + seq_puts(s, "\nBalancing F2FS Async:\n"); + seq_printf(s, " - nodes: %4d in %4d\n", si->ndirty_node, si->node_pages); - seq_printf(s, " - dents %4d in dirs:%4d\n", + seq_printf(s, " - dents: %4d in dirs:%4d\n", si->ndirty_dent, si->ndirty_dirs); - seq_printf(s, " - meta %4d in %4d\n", + seq_printf(s, " - meta: %4d in %4d\n", si->ndirty_meta, si->meta_pages); - seq_printf(s, " - NATs %5d > %lu\n", - si->nats, NM_WOUT_THRESHOLD); - seq_printf(s, " - SITs: %5d\n - free_nids: %5d\n", - si->sits, si->fnids); + seq_printf(s, " - NATs: %9d\n - SITs: %9d\n", + si->nats, si->sits); + seq_printf(s, " - free_nids: %9d\n", + si->fnids); seq_puts(s, "\nDistribution of User Blocks:"); seq_puts(s, " [ valid | invalid | free ]\n"); seq_puts(s, " ["); @@ -340,14 +341,32 @@ void f2fs_destroy_stats(struct f2fs_sb_info *sbi) void __init f2fs_create_root_stats(void) { - debugfs_root = debugfs_create_dir("f2fs", NULL); - if (debugfs_root) - debugfs_create_file("status", S_IRUGO, debugfs_root, - NULL, &stat_fops); + struct dentry *file; + + f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL); + if (!f2fs_debugfs_root) + goto bail; + + file = debugfs_create_file("status", S_IRUGO, f2fs_debugfs_root, + NULL, &stat_fops); + if (!file) + goto free_debugfs_dir; + + return; + +free_debugfs_dir: + debugfs_remove(f2fs_debugfs_root); + +bail: + f2fs_debugfs_root = NULL; + return; } void f2fs_destroy_root_stats(void) { - debugfs_remove_recursive(debugfs_root); - debugfs_root = NULL; + if (!f2fs_debugfs_root) + return; + + debugfs_remove_recursive(f2fs_debugfs_root); + f2fs_debugfs_root = NULL; } diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index 594fc1bb64ef..972fd0ef230f 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -21,12 +21,12 @@ static unsigned long dir_blocks(struct inode *inode) >> PAGE_CACHE_SHIFT; } -static unsigned int dir_buckets(unsigned int level) +static unsigned int dir_buckets(unsigned int level, int dir_level) { if (level < MAX_DIR_HASH_DEPTH / 2) - return 1 << level; + return 1 << (level + dir_level); else - return 1 << ((MAX_DIR_HASH_DEPTH / 2) - 1); + return 1 << ((MAX_DIR_HASH_DEPTH / 2 + dir_level) - 1); } static unsigned int bucket_blocks(unsigned int level) @@ -65,13 +65,14 @@ static void set_de_type(struct f2fs_dir_entry *de, struct inode *inode) de->file_type = f2fs_type_by_mode[(mode & S_IFMT) >> S_SHIFT]; } -static unsigned long dir_block_index(unsigned int level, unsigned int idx) +static unsigned long dir_block_index(unsigned int level, + int dir_level, unsigned int idx) { unsigned long i; unsigned long bidx = 0; for (i = 0; i < level; i++) - bidx += dir_buckets(i) * bucket_blocks(i); + bidx += dir_buckets(i, dir_level) * bucket_blocks(i); bidx += idx * bucket_blocks(level); return bidx; } @@ -93,16 +94,21 @@ static struct f2fs_dir_entry *find_in_block(struct page *dentry_page, f2fs_hash_t namehash, struct page **res_page) { struct f2fs_dir_entry *de; - unsigned long bit_pos, end_pos, next_pos; + unsigned long bit_pos = 0; struct f2fs_dentry_block *dentry_blk = kmap(dentry_page); - int slots; + const void *dentry_bits = &dentry_blk->dentry_bitmap; + int max_len = 0; - bit_pos = find_next_bit_le(&dentry_blk->dentry_bitmap, - NR_DENTRY_IN_BLOCK, 0); while (bit_pos < NR_DENTRY_IN_BLOCK) { + if (!test_bit_le(bit_pos, dentry_bits)) { + if (bit_pos == 0) + max_len = 1; + else if (!test_bit_le(bit_pos - 1, dentry_bits)) + max_len++; + bit_pos++; + continue; + } de = &dentry_blk->dentry[bit_pos]; - slots = GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); - if (early_match_name(name, namelen, namehash, de)) { if (!memcmp(dentry_blk->filename[bit_pos], name, namelen)) { @@ -110,20 +116,18 @@ static struct f2fs_dir_entry *find_in_block(struct page *dentry_page, goto found; } } - next_pos = bit_pos + slots; - bit_pos = find_next_bit_le(&dentry_blk->dentry_bitmap, - NR_DENTRY_IN_BLOCK, next_pos); - if (bit_pos >= NR_DENTRY_IN_BLOCK) - end_pos = NR_DENTRY_IN_BLOCK; - else - end_pos = bit_pos; - if (*max_slots < end_pos - next_pos) - *max_slots = end_pos - next_pos; + if (max_len > *max_slots) { + *max_slots = max_len; + max_len = 0; + } + bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); } de = NULL; kunmap(dentry_page); found: + if (max_len > *max_slots) + *max_slots = max_len; return de; } @@ -141,10 +145,11 @@ static struct f2fs_dir_entry *find_in_level(struct inode *dir, f2fs_bug_on(level > MAX_DIR_HASH_DEPTH); - nbucket = dir_buckets(level); + nbucket = dir_buckets(level, F2FS_I(dir)->i_dir_level); nblock = bucket_blocks(level); - bidx = dir_block_index(level, le32_to_cpu(namehash) % nbucket); + bidx = dir_block_index(level, F2FS_I(dir)->i_dir_level, + le32_to_cpu(namehash) % nbucket); end_block = bidx + nblock; for (; bidx < end_block; bidx++) { @@ -190,9 +195,6 @@ struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir, unsigned int max_depth; unsigned int level; - if (namelen > F2FS_NAME_LEN) - return NULL; - if (npages == 0) return NULL; @@ -251,7 +253,7 @@ void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de, struct page *page, struct inode *inode) { lock_page(page); - wait_on_page_writeback(page); + f2fs_wait_on_page_writeback(page, DATA); de->ino = cpu_to_le32(inode->i_ino); set_de_type(de, inode); kunmap(page); @@ -259,20 +261,17 @@ void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de, dir->i_mtime = dir->i_ctime = CURRENT_TIME; mark_inode_dirty(dir); - /* update parent inode number before releasing dentry page */ - F2FS_I(inode)->i_pino = dir->i_ino; - f2fs_put_page(page, 1); } static void init_dent_inode(const struct qstr *name, struct page *ipage) { - struct f2fs_node *rn; + struct f2fs_inode *ri; /* copy name info. to this inode page */ - rn = F2FS_NODE(ipage); - rn->i.i_namelen = cpu_to_le32(name->len); - memcpy(rn->i.i_name, name->name, name->len); + ri = F2FS_INODE(ipage); + ri->i_namelen = cpu_to_le32(name->len); + memcpy(ri->i_name, name->name, name->len); set_page_dirty(ipage); } @@ -348,19 +347,16 @@ static struct page *init_inode_metadata(struct inode *inode, err = f2fs_init_acl(inode, dir, page); if (err) - goto error; + goto put_error; err = f2fs_init_security(inode, dir, name, page); if (err) - goto error; - - wait_on_page_writeback(page); + goto put_error; } else { page = get_node_page(F2FS_SB(dir->i_sb), inode->i_ino); if (IS_ERR(page)) return page; - wait_on_page_writeback(page); set_cold_node(inode, page); } @@ -376,8 +372,13 @@ static struct page *init_inode_metadata(struct inode *inode, } return page; -error: +put_error: f2fs_put_page(page, 1); + /* once the failed inode becomes a bad inode, i_mode is S_IFREG */ + truncate_inode_pages(&inode->i_data, 0); + truncate_blocks(inode, 0); + remove_dirty_dir_inode(inode); +error: remove_inode_page(inode); return ERR_PTR(err); } @@ -393,16 +394,13 @@ static void update_parent_metadata(struct inode *dir, struct inode *inode, clear_inode_flag(F2FS_I(inode), FI_NEW_INODE); } dir->i_mtime = dir->i_ctime = CURRENT_TIME; + mark_inode_dirty(dir); + if (F2FS_I(dir)->i_current_depth != current_depth) { F2FS_I(dir)->i_current_depth = current_depth; set_inode_flag(F2FS_I(dir), FI_UPDATE_DIR); } - if (is_inode_flag_set(F2FS_I(dir), FI_UPDATE_DIR)) - update_inode_page(dir); - else - mark_inode_dirty(dir); - if (is_inode_flag_set(F2FS_I(inode), FI_INC_LINK)) clear_inode_flag(F2FS_I(inode), FI_INC_LINK); } @@ -432,10 +430,11 @@ next: } /* - * Caller should grab and release a mutex by calling mutex_lock_op() and - * mutex_unlock_op(). + * Caller should grab and release a rwsem by calling f2fs_lock_op() and + * f2fs_unlock_op(). */ -int __f2fs_add_link(struct inode *dir, const struct qstr *name, struct inode *inode) +int __f2fs_add_link(struct inode *dir, const struct qstr *name, + struct inode *inode) { unsigned int bit_pos; unsigned int level; @@ -461,17 +460,18 @@ int __f2fs_add_link(struct inode *dir, const struct qstr *name, struct inode *in } start: - if (current_depth == MAX_DIR_HASH_DEPTH) + if (unlikely(current_depth == MAX_DIR_HASH_DEPTH)) return -ENOSPC; /* Increase the depth, if required */ if (level == current_depth) ++current_depth; - nbucket = dir_buckets(level); + nbucket = dir_buckets(level, F2FS_I(dir)->i_dir_level); nblock = bucket_blocks(level); - bidx = dir_block_index(level, (le32_to_cpu(dentry_hash) % nbucket)); + bidx = dir_block_index(level, F2FS_I(dir)->i_dir_level, + (le32_to_cpu(dentry_hash) % nbucket)); for (block = bidx; block <= (bidx + nblock - 1); block++) { dentry_page = get_new_data_page(dir, NULL, block, true); @@ -491,8 +491,9 @@ start: ++level; goto start; add_dentry: - wait_on_page_writeback(dentry_page); + f2fs_wait_on_page_writeback(dentry_page, DATA); + down_write(&F2FS_I(inode)->i_sem); page = init_inode_metadata(inode, dir, name); if (IS_ERR(page)) { err = PTR_ERR(page); @@ -515,7 +516,12 @@ add_dentry: update_parent_metadata(dir, inode, current_depth); fail: - clear_inode_flag(F2FS_I(dir), FI_UPDATE_DIR); + up_write(&F2FS_I(inode)->i_sem); + + if (is_inode_flag_set(F2FS_I(dir), FI_UPDATE_DIR)) { + update_inode_page(dir); + clear_inode_flag(F2FS_I(dir), FI_UPDATE_DIR); + } kunmap(dentry_page); f2fs_put_page(dentry_page, 1); return err; @@ -532,13 +538,12 @@ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page, unsigned int bit_pos; struct address_space *mapping = page->mapping; struct inode *dir = mapping->host; - struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len)); void *kaddr = page_address(page); int i; lock_page(page); - wait_on_page_writeback(page); + f2fs_wait_on_page_writeback(page, DATA); dentry_blk = (struct f2fs_dentry_block *)kaddr; bit_pos = dentry - (struct f2fs_dir_entry *)dentry_blk->dentry; @@ -554,20 +559,22 @@ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page, dir->i_ctime = dir->i_mtime = CURRENT_TIME; - if (inode && S_ISDIR(inode->i_mode)) { - drop_nlink(dir); - update_inode_page(dir); - } else { - mark_inode_dirty(dir); - } - if (inode) { + struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); + + down_write(&F2FS_I(inode)->i_sem); + + if (S_ISDIR(inode->i_mode)) { + drop_nlink(dir); + update_inode_page(dir); + } inode->i_ctime = CURRENT_TIME; drop_nlink(inode); if (S_ISDIR(inode->i_mode)) { drop_nlink(inode); i_size_write(inode, 0); } + up_write(&F2FS_I(inode)->i_sem); update_inode_page(inode); if (inode->i_nlink == 0) @@ -580,7 +587,6 @@ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page, truncate_hole(dir, page->index, page->index + 1); clear_page_dirty_for_io(page); ClearPageUptodate(page); - dec_page_count(sbi, F2FS_DIRTY_DENTS); inode_dec_dirty_dents(dir); } f2fs_put_page(page, 1); @@ -636,7 +642,7 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx) bit_pos = ((unsigned long)ctx->pos % NR_DENTRY_IN_BLOCK); - for ( ; n < npages; n++) { + for (; n < npages; n++) { dentry_page = get_lock_data_page(inode, n); if (IS_ERR(dentry_page)) continue; diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 89dc7508faf2..2ecac8312359 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -22,8 +22,10 @@ #ifdef CONFIG_F2FS_CHECK_FS #define f2fs_bug_on(condition) BUG_ON(condition) +#define f2fs_down_write(x, y) down_write_nest_lock(x, y) #else #define f2fs_bug_on(condition) +#define f2fs_down_write(x, y) down_write(x) #endif /* @@ -37,6 +39,8 @@ #define F2FS_MOUNT_POSIX_ACL 0x00000020 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040 #define F2FS_MOUNT_INLINE_XATTR 0x00000080 +#define F2FS_MOUNT_INLINE_DATA 0x00000100 +#define F2FS_MOUNT_FLUSH_MERGE 0x00000200 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option) #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option) @@ -85,6 +89,16 @@ enum { SIT_BITMAP }; +/* + * For CP/NAT/SIT/SSA readahead + */ +enum { + META_CP, + META_NAT, + META_SIT, + META_SSA +}; + /* for the list of orphan inodes */ struct orphan_inode_entry { struct list_head list; /* list head */ @@ -97,6 +111,13 @@ struct dir_inode_entry { struct inode *inode; /* vfs inode pointer */ }; +/* for the list of blockaddresses to be discarded */ +struct discard_entry { + struct list_head list; /* list head */ + block_t blkaddr; /* block address to be discarded */ + int len; /* # of consecutive blocks of the discard */ +}; + /* for the list of fsync inodes, used only during recovery */ struct fsync_inode_entry { struct list_head list; /* list head */ @@ -155,13 +176,15 @@ enum { LOOKUP_NODE, /* look up a node without readahead */ LOOKUP_NODE_RA, /* * look up a node with readahead called - * by get_datablock_ro. + * by get_data_block. */ }; #define F2FS_LINK_MAX 32000 /* maximum link count per file */ /* for in-memory extent cache entry */ +#define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */ + struct extent_info { rwlock_t ext_lock; /* rwlock for consistency */ unsigned int fofs; /* start offset in a file */ @@ -175,16 +198,20 @@ struct extent_info { #define FADVISE_COLD_BIT 0x01 #define FADVISE_LOST_PINO_BIT 0x02 +#define DEF_DIR_LEVEL 0 + struct f2fs_inode_info { struct inode vfs_inode; /* serve a vfs inode */ unsigned long i_flags; /* keep an inode flags for ioctl */ unsigned char i_advise; /* use to give file attribute hints */ + unsigned char i_dir_level; /* use for dentry level for large dir */ unsigned int i_current_depth; /* use only in directory structure */ unsigned int i_pino; /* parent inode number */ umode_t i_acl_mode; /* keep file acl mode temporarily */ /* Use below internally in f2fs*/ unsigned long flags; /* use to pass per-file flags */ + struct rw_semaphore i_sem; /* protect fi info */ atomic_t dirty_dents; /* # of dirty dentry pages */ f2fs_hash_t chash; /* hash value of given file name */ unsigned int clevel; /* maximum level of given file name */ @@ -217,6 +244,7 @@ struct f2fs_nm_info { block_t nat_blkaddr; /* base disk address of NAT */ nid_t max_nid; /* maximum possible node ids */ nid_t next_scan_nid; /* the next nid to be scanned */ + unsigned int ram_thresh; /* control the memory footprint */ /* NAT cache management */ struct radix_tree_root nat_root;/* root of the nat entry cache */ @@ -226,6 +254,7 @@ struct f2fs_nm_info { struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */ /* free node ids management */ + struct radix_tree_root free_nid_root;/* root of the free_nid cache */ struct list_head free_nid_list; /* a list for free nids */ spinlock_t free_nid_list_lock; /* protect free nid list */ unsigned int fcnt; /* the number of free node id */ @@ -288,6 +317,12 @@ enum { NO_CHECK_TYPE }; +struct flush_cmd { + struct flush_cmd *next; + struct completion wait; + int ret; +}; + struct f2fs_sm_info { struct sit_info *sit_info; /* whole segment information */ struct free_segmap_info *free_info; /* free segment information */ @@ -308,6 +343,22 @@ struct f2fs_sm_info { /* a threshold to reclaim prefree segments */ unsigned int rec_prefree_segments; + + /* for small discard management */ + struct list_head discard_list; /* 4KB discard list */ + int nr_discards; /* # of discards in the list */ + int max_discards; /* max. discards to be issued */ + + unsigned int ipu_policy; /* in-place-update policy */ + unsigned int min_ipu_util; /* in-place-update threshold */ + + /* for flush command control */ + struct task_struct *f2fs_issue_flush; /* flush thread */ + wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */ + struct flush_cmd *issue_list; /* list for command issue */ + struct flush_cmd *dispatch_list; /* list for command dispatch */ + spinlock_t issue_lock; /* for issue list lock */ + struct flush_cmd *issue_tail; /* list tail of issue list */ }; /* @@ -338,6 +389,7 @@ enum count_type { * with waiting the bio's completion * ... Only can be used with META. */ +#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) enum page_type { DATA, NODE, @@ -346,6 +398,20 @@ enum page_type { META_FLUSH, }; +struct f2fs_io_info { + enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ + int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */ +}; + +#define is_read_io(rw) (((rw) & 1) == READ) +struct f2fs_bio_info { + struct f2fs_sb_info *sbi; /* f2fs superblock */ + struct bio *bio; /* bios to merge */ + sector_t last_block_in_bio; /* last block number */ + struct f2fs_io_info fio; /* store buffered io info. */ + struct rw_semaphore io_rwsem; /* blocking op for bio */ +}; + struct f2fs_sb_info { struct super_block *sb; /* pointer to VFS super block */ struct proc_dir_entry *s_proc; /* proc entry */ @@ -359,9 +425,11 @@ struct f2fs_sb_info { /* for segment-related operations */ struct f2fs_sm_info *sm_info; /* segment manager */ - struct bio *bio[NR_PAGE_TYPE]; /* bios to merge */ - sector_t last_block_in_bio[NR_PAGE_TYPE]; /* last block number */ - struct rw_semaphore bio_sem; /* IO semaphore */ + + /* for bio operations */ + struct f2fs_bio_info read_io; /* for read bios */ + struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ + struct completion *wait_io; /* for completion bios */ /* for checkpoint */ struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ @@ -371,13 +439,13 @@ struct f2fs_sb_info { struct mutex node_write; /* locking node writes */ struct mutex writepages; /* mutex for writepages() */ bool por_doing; /* recovery is doing or not */ - bool on_build_free_nids; /* build_free_nids is doing */ wait_queue_head_t cp_wait; /* for orphan inode management */ struct list_head orphan_inode_list; /* orphan inode list */ - struct mutex orphan_inode_mutex; /* for orphan inode list */ + spinlock_t orphan_inode_lock; /* for orphan inode list */ unsigned int n_orphans; /* # of orphan inodes */ + unsigned int max_orphans; /* max orphan inodes */ /* for directory inode management */ struct list_head dir_inode_list; /* dir inode list */ @@ -399,6 +467,7 @@ struct f2fs_sb_info { unsigned int total_valid_node_count; /* valid node block count */ unsigned int total_valid_inode_count; /* valid inode count */ int active_logs; /* # of active logs */ + int dir_level; /* directory level */ block_t user_block_count; /* # of user blocks */ block_t total_valid_block_count; /* # of valid blocks */ @@ -414,6 +483,9 @@ struct f2fs_sb_info { struct f2fs_gc_kthread *gc_thread; /* GC thread */ unsigned int cur_victim_sec; /* current victim section num */ + /* maximum # of trials to find a victim segment for SSR and GC */ + unsigned int max_victim_search; + /* * for stat information. * one is for the LFS mode, and the other is for the SSR mode. @@ -423,6 +495,7 @@ struct f2fs_sb_info { unsigned int segment_count[2]; /* # of allocated segments */ unsigned int block_count[2]; /* # of allocated blocks */ int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ + int inline_inode; /* # of inline_data inodes */ int bg_gc; /* background gc calls */ unsigned int n_dirty_dirs; /* # of dir inodes */ #endif @@ -462,6 +535,11 @@ static inline struct f2fs_node *F2FS_NODE(struct page *page) return (struct f2fs_node *)page_address(page); } +static inline struct f2fs_inode *F2FS_INODE(struct page *page) +{ + return &((struct f2fs_node *)page_address(page))->i; +} + static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) { return (struct f2fs_nm_info *)(sbi->nm_info); @@ -487,6 +565,16 @@ static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); } +static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi) +{ + return sbi->meta_inode->i_mapping; +} + +static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi) +{ + return sbi->node_inode->i_mapping; +} + static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi) { sbi->s_dirty = 1; @@ -534,7 +622,7 @@ static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) { - down_write_nest_lock(&sbi->cp_rwsem, &sbi->cp_mutex); + f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex); } static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) @@ -548,7 +636,7 @@ static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) { WARN_ON((nid >= NM_I(sbi)->max_nid)); - if (nid >= NM_I(sbi)->max_nid) + if (unlikely(nid >= NM_I(sbi)->max_nid)) return -EINVAL; return 0; } @@ -561,9 +649,14 @@ static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) static inline int F2FS_HAS_BLOCKS(struct inode *inode) { if (F2FS_I(inode)->i_xattr_nid) - return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1); + return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1; else - return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS); + return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS; +} + +static inline bool f2fs_has_xattr_block(unsigned int ofs) +{ + return ofs == XATTR_NODE_OFFSET; } static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, @@ -574,7 +667,7 @@ static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, spin_lock(&sbi->stat_lock); valid_block_count = sbi->total_valid_block_count + (block_t)count; - if (valid_block_count > sbi->user_block_count) { + if (unlikely(valid_block_count > sbi->user_block_count)) { spin_unlock(&sbi->stat_lock); return false; } @@ -585,7 +678,7 @@ static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, return true; } -static inline int dec_valid_block_count(struct f2fs_sb_info *sbi, +static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, struct inode *inode, blkcnt_t count) { @@ -595,7 +688,6 @@ static inline int dec_valid_block_count(struct f2fs_sb_info *sbi, inode->i_blocks -= count; sbi->total_valid_block_count -= (block_t)count; spin_unlock(&sbi->stat_lock); - return 0; } static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) @@ -606,6 +698,7 @@ static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) static inline void inode_inc_dirty_dents(struct inode *inode) { + inc_page_count(F2FS_SB(inode->i_sb), F2FS_DIRTY_DENTS); atomic_inc(&F2FS_I(inode)->dirty_dents); } @@ -616,6 +709,10 @@ static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) static inline void inode_dec_dirty_dents(struct inode *inode) { + if (!S_ISDIR(inode->i_mode)) + return; + + dec_page_count(F2FS_SB(inode->i_sb), F2FS_DIRTY_DENTS); atomic_dec(&F2FS_I(inode)->dirty_dents); } @@ -624,6 +721,11 @@ static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) return atomic_read(&sbi->nr_pages[count_type]); } +static inline int get_dirty_dents(struct inode *inode) +{ + return atomic_read(&F2FS_I(inode)->dirty_dents); +} + static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) { unsigned int pages_per_sec = sbi->segs_per_sec * @@ -634,11 +736,7 @@ static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) { - block_t ret; - spin_lock(&sbi->stat_lock); - ret = sbi->total_valid_block_count; - spin_unlock(&sbi->stat_lock); - return ret; + return sbi->total_valid_block_count; } static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) @@ -686,61 +784,55 @@ static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) } static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, - struct inode *inode, - unsigned int count) + struct inode *inode) { block_t valid_block_count; unsigned int valid_node_count; spin_lock(&sbi->stat_lock); - valid_block_count = sbi->total_valid_block_count + (block_t)count; - sbi->alloc_valid_block_count += (block_t)count; - valid_node_count = sbi->total_valid_node_count + count; - - if (valid_block_count > sbi->user_block_count) { + valid_block_count = sbi->total_valid_block_count + 1; + if (unlikely(valid_block_count > sbi->user_block_count)) { spin_unlock(&sbi->stat_lock); return false; } - if (valid_node_count > sbi->total_node_count) { + valid_node_count = sbi->total_valid_node_count + 1; + if (unlikely(valid_node_count > sbi->total_node_count)) { spin_unlock(&sbi->stat_lock); return false; } if (inode) - inode->i_blocks += count; - sbi->total_valid_node_count = valid_node_count; - sbi->total_valid_block_count = valid_block_count; + inode->i_blocks++; + + sbi->alloc_valid_block_count++; + sbi->total_valid_node_count++; + sbi->total_valid_block_count++; spin_unlock(&sbi->stat_lock); return true; } static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, - struct inode *inode, - unsigned int count) + struct inode *inode) { spin_lock(&sbi->stat_lock); - f2fs_bug_on(sbi->total_valid_block_count < count); - f2fs_bug_on(sbi->total_valid_node_count < count); - f2fs_bug_on(inode->i_blocks < count); + f2fs_bug_on(!sbi->total_valid_block_count); + f2fs_bug_on(!sbi->total_valid_node_count); + f2fs_bug_on(!inode->i_blocks); - inode->i_blocks -= count; - sbi->total_valid_node_count -= count; - sbi->total_valid_block_count -= (block_t)count; + inode->i_blocks--; + sbi->total_valid_node_count--; + sbi->total_valid_block_count--; spin_unlock(&sbi->stat_lock); } static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) { - unsigned int ret; - spin_lock(&sbi->stat_lock); - ret = sbi->total_valid_node_count; - spin_unlock(&sbi->stat_lock); - return ret; + return sbi->total_valid_node_count; } static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) @@ -751,27 +843,22 @@ static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) spin_unlock(&sbi->stat_lock); } -static inline int dec_valid_inode_count(struct f2fs_sb_info *sbi) +static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) { spin_lock(&sbi->stat_lock); f2fs_bug_on(!sbi->total_valid_inode_count); sbi->total_valid_inode_count--; spin_unlock(&sbi->stat_lock); - return 0; } static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) { - unsigned int ret; - spin_lock(&sbi->stat_lock); - ret = sbi->total_valid_inode_count; - spin_unlock(&sbi->stat_lock); - return ret; + return sbi->total_valid_inode_count; } static inline void f2fs_put_page(struct page *page, int unlock) { - if (!page || IS_ERR(page)) + if (!page) return; if (unlock) { @@ -792,9 +879,9 @@ static inline void f2fs_put_dnode(struct dnode_of_data *dn) } static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, - size_t size, void (*ctor)(void *)) + size_t size) { - return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, ctor); + return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL); } static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, @@ -876,7 +963,9 @@ enum { FI_NO_ALLOC, /* should not allocate any blocks */ FI_UPDATE_DIR, /* should update inode block for consistency */ FI_DELAY_IPUT, /* used for the recovery */ + FI_NO_EXTENT, /* not to use the extent cache */ FI_INLINE_XATTR, /* used for inline xattr */ + FI_INLINE_DATA, /* used for inline data*/ }; static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) @@ -914,6 +1003,8 @@ static inline void get_inline_info(struct f2fs_inode_info *fi, { if (ri->i_inline & F2FS_INLINE_XATTR) set_inode_flag(fi, FI_INLINE_XATTR); + if (ri->i_inline & F2FS_INLINE_DATA) + set_inode_flag(fi, FI_INLINE_DATA); } static inline void set_raw_inline(struct f2fs_inode_info *fi, @@ -923,41 +1014,69 @@ static inline void set_raw_inline(struct f2fs_inode_info *fi, if (is_inode_flag_set(fi, FI_INLINE_XATTR)) ri->i_inline |= F2FS_INLINE_XATTR; + if (is_inode_flag_set(fi, FI_INLINE_DATA)) + ri->i_inline |= F2FS_INLINE_DATA; +} + +static inline int f2fs_has_inline_xattr(struct inode *inode) +{ + return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR); } static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi) { - if (is_inode_flag_set(fi, FI_INLINE_XATTR)) + if (f2fs_has_inline_xattr(&fi->vfs_inode)) return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; return DEF_ADDRS_PER_INODE; } static inline void *inline_xattr_addr(struct page *page) { - struct f2fs_inode *ri; - ri = (struct f2fs_inode *)page_address(page); + struct f2fs_inode *ri = F2FS_INODE(page); return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS]); } static inline int inline_xattr_size(struct inode *inode) { - if (is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR)) + if (f2fs_has_inline_xattr(inode)) return F2FS_INLINE_XATTR_ADDRS << 2; else return 0; } +static inline int f2fs_has_inline_data(struct inode *inode) +{ + return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA); +} + +static inline void *inline_data_addr(struct page *page) +{ + struct f2fs_inode *ri = F2FS_INODE(page); + return (void *)&(ri->i_addr[1]); +} + static inline int f2fs_readonly(struct super_block *sb) { return sb->s_flags & MS_RDONLY; } +static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi) +{ + set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); + sbi->sb->s_flags |= MS_RDONLY; +} + +#define get_inode_mode(i) \ + ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \ + (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) + /* * file.c */ int f2fs_sync_file(struct file *, loff_t, loff_t, int); void truncate_data_blocks(struct dnode_of_data *); +int truncate_blocks(struct inode *, u64); void f2fs_truncate(struct inode *); int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); int f2fs_setattr(struct dentry *, struct iattr *); @@ -973,7 +1092,7 @@ void f2fs_set_inode_flags(struct inode *); struct inode *f2fs_iget(struct super_block *, unsigned long); int try_to_free_nats(struct f2fs_sb_info *, int); void update_inode(struct inode *, struct page *); -int update_inode_page(struct inode *); +void update_inode_page(struct inode *); int f2fs_write_inode(struct inode *, struct writeback_control *); void f2fs_evict_inode(struct inode *); @@ -1022,12 +1141,13 @@ struct dnode_of_data; struct node_info; int is_checkpointed_node(struct f2fs_sb_info *, nid_t); +bool fsync_mark_done(struct f2fs_sb_info *, nid_t); void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); int truncate_inode_blocks(struct inode *, pgoff_t); int truncate_xattr_node(struct inode *, struct page *); int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); -int remove_inode_page(struct inode *); +void remove_inode_page(struct inode *); struct page *new_inode_page(struct inode *, const struct qstr *); struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); void ra_node_page(struct f2fs_sb_info *, nid_t); @@ -1040,6 +1160,7 @@ void alloc_nid_done(struct f2fs_sb_info *, nid_t); void alloc_nid_failed(struct f2fs_sb_info *, nid_t); void recover_node_page(struct f2fs_sb_info *, struct page *, struct f2fs_summary *, struct node_info *, block_t); +bool recover_xattr_data(struct inode *, struct page *, block_t); int recover_inode_page(struct f2fs_sb_info *, struct page *); int restore_node_summary(struct f2fs_sb_info *, unsigned int, struct f2fs_summary_block *); @@ -1054,24 +1175,26 @@ void destroy_node_manager_caches(void); */ void f2fs_balance_fs(struct f2fs_sb_info *); void f2fs_balance_fs_bg(struct f2fs_sb_info *); +int f2fs_issue_flush(struct f2fs_sb_info *); void invalidate_blocks(struct f2fs_sb_info *, block_t); +void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t); void clear_prefree_segments(struct f2fs_sb_info *); int npages_for_summary_flush(struct f2fs_sb_info *); void allocate_new_segments(struct f2fs_sb_info *); struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); -struct bio *f2fs_bio_alloc(struct block_device *, int); -void f2fs_submit_bio(struct f2fs_sb_info *, enum page_type, bool); -void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool); void write_meta_page(struct f2fs_sb_info *, struct page *); -void write_node_page(struct f2fs_sb_info *, struct page *, unsigned int, - block_t, block_t *); -void write_data_page(struct inode *, struct page *, struct dnode_of_data*, - block_t, block_t *); -void rewrite_data_page(struct f2fs_sb_info *, struct page *, block_t); +void write_node_page(struct f2fs_sb_info *, struct page *, + struct f2fs_io_info *, unsigned int, block_t, block_t *); +void write_data_page(struct page *, struct dnode_of_data *, block_t *, + struct f2fs_io_info *); +void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *); void recover_data_page(struct f2fs_sb_info *, struct page *, struct f2fs_summary *, block_t, block_t); void rewrite_node_page(struct f2fs_sb_info *, struct page *, struct f2fs_summary *, block_t, block_t); +void allocate_data_block(struct f2fs_sb_info *, struct page *, + block_t, block_t *, struct f2fs_summary *, int); +void f2fs_wait_on_page_writeback(struct page *, enum page_type); void write_data_summaries(struct f2fs_sb_info *, block_t); void write_node_summaries(struct f2fs_sb_info *, block_t); int lookup_journal_in_cursum(struct f2fs_summary_block *, @@ -1079,18 +1202,21 @@ int lookup_journal_in_cursum(struct f2fs_summary_block *, void flush_sit_entries(struct f2fs_sb_info *); int build_segment_manager(struct f2fs_sb_info *); void destroy_segment_manager(struct f2fs_sb_info *); +int __init create_segment_manager_caches(void); +void destroy_segment_manager_caches(void); /* * checkpoint.c */ struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); +int ra_meta_pages(struct f2fs_sb_info *, int, int, int); long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); int acquire_orphan_inode(struct f2fs_sb_info *); void release_orphan_inode(struct f2fs_sb_info *); void add_orphan_inode(struct f2fs_sb_info *, nid_t); void remove_orphan_inode(struct f2fs_sb_info *, nid_t); -int recover_orphan_inodes(struct f2fs_sb_info *); +void recover_orphan_inodes(struct f2fs_sb_info *); int get_valid_checkpoint(struct f2fs_sb_info *); void set_dirty_dir_page(struct inode *, struct page *); void add_dirty_dir_inode(struct inode *); @@ -1105,13 +1231,17 @@ void destroy_checkpoint_caches(void); /* * data.c */ +void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int); +int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int); +void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t, + struct f2fs_io_info *); int reserve_new_block(struct dnode_of_data *); +int f2fs_reserve_block(struct dnode_of_data *, pgoff_t); void update_extent_cache(block_t, struct dnode_of_data *); struct page *find_data_page(struct inode *, pgoff_t, bool); struct page *get_lock_data_page(struct inode *, pgoff_t); struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); -int f2fs_readpage(struct f2fs_sb_info *, struct page *, block_t, int); -int do_write_data_page(struct page *); +int do_write_data_page(struct page *, struct f2fs_io_info *); /* * gc.c @@ -1144,13 +1274,13 @@ struct f2fs_stat_info { int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; int nats, sits, fnids; int total_count, utilization; - int bg_gc; + int bg_gc, inline_inode; unsigned int valid_count, valid_node_count, valid_inode_count; unsigned int bimodal, avg_vblocks; int util_free, util_valid, util_invalid; int rsvd_segs, overp_segs; int dirty_count, node_pages, meta_pages; - int prefree_count, call_count; + int prefree_count, call_count, cp_count; int tot_segs, node_segs, data_segs, free_segs, free_secs; int tot_blks, data_blks, node_blks; int curseg[NR_CURSEG_TYPE]; @@ -1164,15 +1294,27 @@ struct f2fs_stat_info { static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) { - return (struct f2fs_stat_info*)sbi->stat_info; + return (struct f2fs_stat_info *)sbi->stat_info; } +#define stat_inc_cp_count(si) ((si)->cp_count++) #define stat_inc_call_count(si) ((si)->call_count++) #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++) #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++) +#define stat_inc_inline_inode(inode) \ + do { \ + if (f2fs_has_inline_data(inode)) \ + ((F2FS_SB(inode->i_sb))->inline_inode++); \ + } while (0) +#define stat_dec_inline_inode(inode) \ + do { \ + if (f2fs_has_inline_data(inode)) \ + ((F2FS_SB(inode->i_sb))->inline_inode--); \ + } while (0) + #define stat_inc_seg_type(sbi, curseg) \ ((sbi)->segment_count[(curseg)->alloc_type]++) #define stat_inc_block_count(sbi, curseg) \ @@ -1210,12 +1352,15 @@ void f2fs_destroy_stats(struct f2fs_sb_info *); void __init f2fs_create_root_stats(void); void f2fs_destroy_root_stats(void); #else +#define stat_inc_cp_count(si) #define stat_inc_call_count(si) #define stat_inc_bggc_count(si) #define stat_inc_dirty_dir(sbi) #define stat_dec_dirty_dir(sbi) #define stat_inc_total_hit(sb) #define stat_inc_read_hit(sb) +#define stat_inc_inline_inode(inode) +#define stat_dec_inline_inode(inode) #define stat_inc_seg_type(sbi, curseg) #define stat_inc_block_count(sbi, curseg) #define stat_inc_seg_count(si, type) @@ -1238,4 +1383,13 @@ extern const struct address_space_operations f2fs_meta_aops; extern const struct inode_operations f2fs_dir_inode_operations; extern const struct inode_operations f2fs_symlink_inode_operations; extern const struct inode_operations f2fs_special_inode_operations; + +/* + * inline.c + */ +bool f2fs_may_inline(struct inode *); +int f2fs_read_inline_data(struct inode *, struct page *); +int f2fs_convert_inline_data(struct inode *, pgoff_t); +int f2fs_write_inline_data(struct inode *, struct page *, unsigned int); +int recover_inline_data(struct inode *, struct page *); #endif diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 7d714f4972d5..60e7d5448a1d 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -33,7 +33,6 @@ static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma, struct page *page = vmf->page; struct inode *inode = file_inode(vma->vm_file); struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); - block_t old_blk_addr; struct dnode_of_data dn; int err; @@ -44,30 +43,16 @@ static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma, /* block allocation */ f2fs_lock_op(sbi); set_new_dnode(&dn, inode, NULL, NULL, 0); - err = get_dnode_of_data(&dn, page->index, ALLOC_NODE); - if (err) { - f2fs_unlock_op(sbi); - goto out; - } - - old_blk_addr = dn.data_blkaddr; - - if (old_blk_addr == NULL_ADDR) { - err = reserve_new_block(&dn); - if (err) { - f2fs_put_dnode(&dn); - f2fs_unlock_op(sbi); - goto out; - } - } - f2fs_put_dnode(&dn); + err = f2fs_reserve_block(&dn, page->index); f2fs_unlock_op(sbi); + if (err) + goto out; file_update_time(vma->vm_file); lock_page(page); - if (page->mapping != inode->i_mapping || + if (unlikely(page->mapping != inode->i_mapping || page_offset(page) > i_size_read(inode) || - !PageUptodate(page)) { + !PageUptodate(page))) { unlock_page(page); err = -EFAULT; goto out; @@ -91,7 +76,7 @@ static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma, trace_f2fs_vm_page_mkwrite(page, DATA); mapped: /* fill the page */ - wait_on_page_writeback(page); + f2fs_wait_on_page_writeback(page, DATA); out: sb_end_pagefault(inode->i_sb); return block_page_mkwrite_return(err); @@ -99,6 +84,7 @@ out: static const struct vm_operations_struct f2fs_file_vm_ops = { .fault = filemap_fault, + .map_pages = filemap_map_pages, .page_mkwrite = f2fs_vm_page_mkwrite, .remap_pages = generic_file_remap_pages, }; @@ -126,6 +112,7 @@ static int get_parent_ino(struct inode *inode, nid_t *pino) int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) { struct inode *inode = file->f_mapping->host; + struct f2fs_inode_info *fi = F2FS_I(inode); struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); int ret = 0; bool need_cp = false; @@ -135,7 +122,7 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) .for_reclaim = 0, }; - if (f2fs_readonly(inode->i_sb)) + if (unlikely(f2fs_readonly(inode->i_sb))) return 0; trace_f2fs_sync_file_enter(inode); @@ -148,7 +135,7 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) /* guarantee free sections for fsync */ f2fs_balance_fs(sbi); - mutex_lock(&inode->i_mutex); + down_read(&fi->i_sem); /* * Both of fdatasync() and fsync() are able to be recovered from @@ -165,25 +152,33 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) else if (F2FS_I(inode)->xattr_ver == cur_cp_version(F2FS_CKPT(sbi))) need_cp = true; + up_read(&fi->i_sem); + if (need_cp) { nid_t pino; - F2FS_I(inode)->xattr_ver = 0; - /* all the dirty node pages should be flushed for POR */ ret = f2fs_sync_fs(inode->i_sb, 1); + + down_write(&fi->i_sem); + F2FS_I(inode)->xattr_ver = 0; if (file_wrong_pino(inode) && inode->i_nlink == 1 && get_parent_ino(inode, &pino)) { F2FS_I(inode)->i_pino = pino; file_got_pino(inode); + up_write(&fi->i_sem); mark_inode_dirty_sync(inode); ret = f2fs_write_inode(inode, NULL); if (ret) goto out; + } else { + up_write(&fi->i_sem); } } else { /* if there is no written node page, write its inode page */ while (!sync_node_pages(sbi, inode->i_ino, &wbc)) { + if (fsync_mark_done(sbi, inode->i_ino)) + goto out; mark_inode_dirty_sync(inode); ret = f2fs_write_inode(inode, NULL); if (ret) @@ -192,10 +187,9 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) ret = wait_on_node_pages_writeback(sbi, inode->i_ino); if (ret) goto out; - ret = blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL); + ret = f2fs_issue_flush(F2FS_SB(inode->i_sb)); } out: - mutex_unlock(&inode->i_mutex); trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); return ret; } @@ -217,7 +211,7 @@ int truncate_data_blocks_range(struct dnode_of_data *dn, int count) raw_node = F2FS_NODE(dn->node_page); addr = blkaddr_in_node(raw_node) + ofs; - for ( ; count > 0; count--, addr++, dn->ofs_in_node++) { + for (; count > 0; count--, addr++, dn->ofs_in_node++) { block_t blkaddr = le32_to_cpu(*addr); if (blkaddr == NULL_ADDR) continue; @@ -256,31 +250,34 @@ static void truncate_partial_data_page(struct inode *inode, u64 from) return; lock_page(page); - if (page->mapping != inode->i_mapping) { + if (unlikely(page->mapping != inode->i_mapping)) { f2fs_put_page(page, 1); return; } - wait_on_page_writeback(page); + f2fs_wait_on_page_writeback(page, DATA); zero_user(page, offset, PAGE_CACHE_SIZE - offset); set_page_dirty(page); f2fs_put_page(page, 1); } -static int truncate_blocks(struct inode *inode, u64 from) +int truncate_blocks(struct inode *inode, u64 from) { struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); unsigned int blocksize = inode->i_sb->s_blocksize; struct dnode_of_data dn; pgoff_t free_from; - int count = 0; - int err; + int count = 0, err = 0; trace_f2fs_truncate_blocks_enter(inode, from); + if (f2fs_has_inline_data(inode)) + goto done; + free_from = (pgoff_t) ((from + blocksize - 1) >> (sbi->log_blocksize)); f2fs_lock_op(sbi); + set_new_dnode(&dn, inode, NULL, NULL, 0); err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE); if (err) { @@ -308,7 +305,7 @@ static int truncate_blocks(struct inode *inode, u64 from) free_next: err = truncate_inode_blocks(inode, free_from); f2fs_unlock_op(sbi); - +done: /* lastly zero out the first data page */ truncate_partial_data_page(inode, from); @@ -382,6 +379,10 @@ int f2fs_setattr(struct dentry *dentry, struct iattr *attr) if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size != i_size_read(inode)) { + err = f2fs_convert_inline_data(inode, attr->ia_size); + if (err) + return err; + truncate_setsize(inode, attr->ia_size); f2fs_truncate(inode); f2fs_balance_fs(F2FS_SB(inode->i_sb)); @@ -390,7 +391,7 @@ int f2fs_setattr(struct dentry *dentry, struct iattr *attr) __setattr_copy(inode, attr); if (attr->ia_valid & ATTR_MODE) { - err = f2fs_acl_chmod(inode); + err = posix_acl_chmod(inode, get_inode_mode(inode)); if (err || is_inode_flag_set(fi, FI_ACL_MODE)) { inode->i_mode = fi->i_acl_mode; clear_inode_flag(fi, FI_ACL_MODE); @@ -405,6 +406,7 @@ const struct inode_operations f2fs_file_inode_operations = { .getattr = f2fs_getattr, .setattr = f2fs_setattr, .get_acl = f2fs_get_acl, + .set_acl = f2fs_set_acl, #ifdef CONFIG_F2FS_FS_XATTR .setxattr = generic_setxattr, .getxattr = generic_getxattr, @@ -429,7 +431,7 @@ static void fill_zero(struct inode *inode, pgoff_t index, f2fs_unlock_op(sbi); if (!IS_ERR(page)) { - wait_on_page_writeback(page); + f2fs_wait_on_page_writeback(page, DATA); zero_user(page, start, len); set_page_dirty(page); f2fs_put_page(page, 1); @@ -459,12 +461,16 @@ int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) return 0; } -static int punch_hole(struct inode *inode, loff_t offset, loff_t len, int mode) +static int punch_hole(struct inode *inode, loff_t offset, loff_t len) { pgoff_t pg_start, pg_end; loff_t off_start, off_end; int ret = 0; + ret = f2fs_convert_inline_data(inode, MAX_INLINE_DATA + 1); + if (ret) + return ret; + pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT; pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT; @@ -499,12 +505,6 @@ static int punch_hole(struct inode *inode, loff_t offset, loff_t len, int mode) } } - if (!(mode & FALLOC_FL_KEEP_SIZE) && - i_size_read(inode) <= (offset + len)) { - i_size_write(inode, offset); - mark_inode_dirty(inode); - } - return ret; } @@ -521,6 +521,10 @@ static int expand_inode_data(struct inode *inode, loff_t offset, if (ret) return ret; + ret = f2fs_convert_inline_data(inode, offset + len); + if (ret) + return ret; + pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT; pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT; @@ -532,22 +536,10 @@ static int expand_inode_data(struct inode *inode, loff_t offset, f2fs_lock_op(sbi); set_new_dnode(&dn, inode, NULL, NULL, 0); - ret = get_dnode_of_data(&dn, index, ALLOC_NODE); - if (ret) { - f2fs_unlock_op(sbi); - break; - } - - if (dn.data_blkaddr == NULL_ADDR) { - ret = reserve_new_block(&dn); - if (ret) { - f2fs_put_dnode(&dn); - f2fs_unlock_op(sbi); - break; - } - } - f2fs_put_dnode(&dn); + ret = f2fs_reserve_block(&dn, index); f2fs_unlock_op(sbi); + if (ret) + break; if (pg_start == pg_end) new_size = offset + len; @@ -577,8 +569,10 @@ static long f2fs_fallocate(struct file *file, int mode, if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) return -EOPNOTSUPP; + mutex_lock(&inode->i_mutex); + if (mode & FALLOC_FL_PUNCH_HOLE) - ret = punch_hole(inode, offset, len, mode); + ret = punch_hole(inode, offset, len); else ret = expand_inode_data(inode, offset, len, mode); @@ -586,6 +580,9 @@ static long f2fs_fallocate(struct file *file, int mode, inode->i_mtime = inode->i_ctime = CURRENT_TIME; mark_inode_dirty(inode); } + + mutex_unlock(&inode->i_mutex); + trace_f2fs_fallocate(inode, mode, offset, len, ret); return ret; } diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index b7ad1ec7e4cc..b90dbe55403a 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -119,7 +119,6 @@ int start_gc_thread(struct f2fs_sb_info *sbi) kfree(gc_th); sbi->gc_thread = NULL; } - out: return err; } @@ -164,8 +163,8 @@ static void select_policy(struct f2fs_sb_info *sbi, int gc_type, p->ofs_unit = sbi->segs_per_sec; } - if (p->max_search > MAX_VICTIM_SEARCH) - p->max_search = MAX_VICTIM_SEARCH; + if (p->max_search > sbi->max_victim_search) + p->max_search = sbi->max_victim_search; p->offset = sbi->last_victim[p->gc_mode]; } @@ -429,7 +428,7 @@ next_step: /* set page dirty and write it */ if (gc_type == FG_GC) { - f2fs_wait_on_page_writeback(node_page, NODE, true); + f2fs_wait_on_page_writeback(node_page, NODE); set_page_dirty(node_page); } else { if (!PageWriteback(node_page)) @@ -521,23 +520,23 @@ static int check_dnode(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, static void move_data_page(struct inode *inode, struct page *page, int gc_type) { + struct f2fs_io_info fio = { + .type = DATA, + .rw = WRITE_SYNC, + }; + if (gc_type == BG_GC) { if (PageWriteback(page)) goto out; set_page_dirty(page); set_cold_data(page); } else { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + f2fs_wait_on_page_writeback(page, DATA); - f2fs_wait_on_page_writeback(page, DATA, true); - - if (clear_page_dirty_for_io(page) && - S_ISDIR(inode->i_mode)) { - dec_page_count(sbi, F2FS_DIRTY_DENTS); + if (clear_page_dirty_for_io(page)) inode_dec_dirty_dents(inode); - } set_cold_data(page); - do_write_data_page(page); + do_write_data_page(page, &fio); clear_cold_data(page); } out: @@ -631,7 +630,7 @@ next_iput: goto next_step; if (gc_type == FG_GC) { - f2fs_submit_bio(sbi, DATA, true); + f2fs_submit_merged_bio(sbi, DATA, WRITE); /* * In the case of FG_GC, it'd be better to reclaim this victim @@ -664,8 +663,6 @@ static void do_garbage_collect(struct f2fs_sb_info *sbi, unsigned int segno, /* read segment summary of victim */ sum_page = get_sum_page(sbi, segno); - if (IS_ERR(sum_page)) - return; blk_start_plug(&plug); @@ -697,7 +694,9 @@ int f2fs_gc(struct f2fs_sb_info *sbi) INIT_LIST_HEAD(&ilist); gc_more: - if (!(sbi->sb->s_flags & MS_ACTIVE)) + if (unlikely(!(sbi->sb->s_flags & MS_ACTIVE))) + goto stop; + if (unlikely(is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ERROR_FLAG))) goto stop; if (gc_type == BG_GC && has_not_enough_free_secs(sbi, nfree)) { @@ -709,6 +708,11 @@ gc_more: goto stop; ret = 0; + /* readahead multi ssa blocks those have contiguous address */ + if (sbi->segs_per_sec > 1) + ra_meta_pages(sbi, GET_SUM_BLOCK(sbi, segno), sbi->segs_per_sec, + META_SSA); + for (i = 0; i < sbi->segs_per_sec; i++) do_garbage_collect(sbi, segno + i, &ilist, gc_type); @@ -738,7 +742,7 @@ void build_gc_manager(struct f2fs_sb_info *sbi) int __init create_gc_caches(void) { winode_slab = f2fs_kmem_cache_create("f2fs_gc_inodes", - sizeof(struct inode_entry), NULL); + sizeof(struct inode_entry)); if (!winode_slab) return -ENOMEM; return 0; diff --git a/fs/f2fs/gc.h b/fs/f2fs/gc.h index 507056d22205..5d5eb6047bf4 100644 --- a/fs/f2fs/gc.h +++ b/fs/f2fs/gc.h @@ -20,7 +20,7 @@ #define LIMIT_FREE_BLOCK 40 /* percentage over invalid + free space */ /* Search max. number of dirty segments to select a victim segment */ -#define MAX_VICTIM_SEARCH 4096 /* covers 8GB */ +#define DEF_MAX_VICTIM_SEARCH 4096 /* covers 8GB */ struct f2fs_gc_kthread { struct task_struct *f2fs_gc_task; diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c new file mode 100644 index 000000000000..383db1fabcf4 --- /dev/null +++ b/fs/f2fs/inline.c @@ -0,0 +1,224 @@ +/* + * fs/f2fs/inline.c + * Copyright (c) 2013, Intel Corporation + * Authors: Huajun Li <huajun.li@intel.com> + * Haicheng Li <haicheng.li@intel.com> + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/fs.h> +#include <linux/f2fs_fs.h> + +#include "f2fs.h" + +bool f2fs_may_inline(struct inode *inode) +{ + struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + block_t nr_blocks; + loff_t i_size; + + if (!test_opt(sbi, INLINE_DATA)) + return false; + + nr_blocks = F2FS_I(inode)->i_xattr_nid ? 3 : 2; + if (inode->i_blocks > nr_blocks) + return false; + + i_size = i_size_read(inode); + if (i_size > MAX_INLINE_DATA) + return false; + + return true; +} + +int f2fs_read_inline_data(struct inode *inode, struct page *page) +{ + struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct page *ipage; + void *src_addr, *dst_addr; + + if (page->index) { + zero_user_segment(page, 0, PAGE_CACHE_SIZE); + goto out; + } + + ipage = get_node_page(sbi, inode->i_ino); + if (IS_ERR(ipage)) { + unlock_page(page); + return PTR_ERR(ipage); + } + + zero_user_segment(page, MAX_INLINE_DATA, PAGE_CACHE_SIZE); + + /* Copy the whole inline data block */ + src_addr = inline_data_addr(ipage); + dst_addr = kmap(page); + memcpy(dst_addr, src_addr, MAX_INLINE_DATA); + kunmap(page); + f2fs_put_page(ipage, 1); + +out: + SetPageUptodate(page); + unlock_page(page); + + return 0; +} + +static int __f2fs_convert_inline_data(struct inode *inode, struct page *page) +{ + int err; + struct page *ipage; + struct dnode_of_data dn; + void *src_addr, *dst_addr; + block_t new_blk_addr; + struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_io_info fio = { + .type = DATA, + .rw = WRITE_SYNC | REQ_PRIO, + }; + + f2fs_lock_op(sbi); + ipage = get_node_page(sbi, inode->i_ino); + if (IS_ERR(ipage)) + return PTR_ERR(ipage); + + /* + * i_addr[0] is not used for inline data, + * so reserving new block will not destroy inline data + */ + set_new_dnode(&dn, inode, ipage, NULL, 0); + err = f2fs_reserve_block(&dn, 0); + if (err) { + f2fs_unlock_op(sbi); + return err; + } + + zero_user_segment(page, MAX_INLINE_DATA, PAGE_CACHE_SIZE); + + /* Copy the whole inline data block */ + src_addr = inline_data_addr(ipage); + dst_addr = kmap(page); + memcpy(dst_addr, src_addr, MAX_INLINE_DATA); + kunmap(page); + SetPageUptodate(page); + + /* write data page to try to make data consistent */ + set_page_writeback(page); + write_data_page(page, &dn, &new_blk_addr, &fio); + update_extent_cache(new_blk_addr, &dn); + f2fs_wait_on_page_writeback(page, DATA); + + /* clear inline data and flag after data writeback */ + zero_user_segment(ipage, INLINE_DATA_OFFSET, + INLINE_DATA_OFFSET + MAX_INLINE_DATA); + clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA); + stat_dec_inline_inode(inode); + + sync_inode_page(&dn); + f2fs_put_dnode(&dn); + f2fs_unlock_op(sbi); + return err; +} + +int f2fs_convert_inline_data(struct inode *inode, pgoff_t to_size) +{ + struct page *page; + int err; + + if (!f2fs_has_inline_data(inode)) + return 0; + else if (to_size <= MAX_INLINE_DATA) + return 0; + + page = grab_cache_page_write_begin(inode->i_mapping, 0, AOP_FLAG_NOFS); + if (!page) + return -ENOMEM; + + err = __f2fs_convert_inline_data(inode, page); + f2fs_put_page(page, 1); + return err; +} + +int f2fs_write_inline_data(struct inode *inode, + struct page *page, unsigned size) +{ + void *src_addr, *dst_addr; + struct page *ipage; + struct dnode_of_data dn; + int err; + + set_new_dnode(&dn, inode, NULL, NULL, 0); + err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); + if (err) + return err; + ipage = dn.inode_page; + + zero_user_segment(ipage, INLINE_DATA_OFFSET, + INLINE_DATA_OFFSET + MAX_INLINE_DATA); + src_addr = kmap(page); + dst_addr = inline_data_addr(ipage); + memcpy(dst_addr, src_addr, size); + kunmap(page); + + /* Release the first data block if it is allocated */ + if (!f2fs_has_inline_data(inode)) { + truncate_data_blocks_range(&dn, 1); + set_inode_flag(F2FS_I(inode), FI_INLINE_DATA); + stat_inc_inline_inode(inode); + } + + sync_inode_page(&dn); + f2fs_put_dnode(&dn); + + return 0; +} + +int recover_inline_data(struct inode *inode, struct page *npage) +{ + struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_inode *ri = NULL; + void *src_addr, *dst_addr; + struct page *ipage; + + /* + * The inline_data recovery policy is as follows. + * [prev.] [next] of inline_data flag + * o o -> recover inline_data + * o x -> remove inline_data, and then recover data blocks + * x o -> remove inline_data, and then recover inline_data + * x x -> recover data blocks + */ + if (IS_INODE(npage)) + ri = F2FS_INODE(npage); + + if (f2fs_has_inline_data(inode) && + ri && ri->i_inline & F2FS_INLINE_DATA) { +process_inline: + ipage = get_node_page(sbi, inode->i_ino); + f2fs_bug_on(IS_ERR(ipage)); + + src_addr = inline_data_addr(npage); + dst_addr = inline_data_addr(ipage); + memcpy(dst_addr, src_addr, MAX_INLINE_DATA); + update_inode(inode, ipage); + f2fs_put_page(ipage, 1); + return -1; + } + + if (f2fs_has_inline_data(inode)) { + ipage = get_node_page(sbi, inode->i_ino); + f2fs_bug_on(IS_ERR(ipage)); + zero_user_segment(ipage, INLINE_DATA_OFFSET, + INLINE_DATA_OFFSET + MAX_INLINE_DATA); + clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA); + update_inode(inode, ipage); + f2fs_put_page(ipage, 1); + } else if (ri && ri->i_inline & F2FS_INLINE_DATA) { + truncate_blocks(inode, 0); + set_inode_flag(F2FS_I(inode), FI_INLINE_DATA); + goto process_inline; + } + return 0; +} diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c index d0eaa9faeca0..ee829d360468 100644 --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -42,9 +42,11 @@ static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri) if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { if (ri->i_addr[0]) - inode->i_rdev = old_decode_dev(le32_to_cpu(ri->i_addr[0])); + inode->i_rdev = + old_decode_dev(le32_to_cpu(ri->i_addr[0])); else - inode->i_rdev = new_decode_dev(le32_to_cpu(ri->i_addr[1])); + inode->i_rdev = + new_decode_dev(le32_to_cpu(ri->i_addr[1])); } } @@ -52,11 +54,13 @@ static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri) { if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { if (old_valid_dev(inode->i_rdev)) { - ri->i_addr[0] = cpu_to_le32(old_encode_dev(inode->i_rdev)); + ri->i_addr[0] = + cpu_to_le32(old_encode_dev(inode->i_rdev)); ri->i_addr[1] = 0; } else { ri->i_addr[0] = 0; - ri->i_addr[1] = cpu_to_le32(new_encode_dev(inode->i_rdev)); + ri->i_addr[1] = + cpu_to_le32(new_encode_dev(inode->i_rdev)); ri->i_addr[2] = 0; } } @@ -67,7 +71,6 @@ static int do_read_inode(struct inode *inode) struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); struct f2fs_inode_info *fi = F2FS_I(inode); struct page *node_page; - struct f2fs_node *rn; struct f2fs_inode *ri; /* Check if ino is within scope */ @@ -81,8 +84,7 @@ static int do_read_inode(struct inode *inode) if (IS_ERR(node_page)) return PTR_ERR(node_page); - rn = F2FS_NODE(node_page); - ri = &(rn->i); + ri = F2FS_INODE(node_page); inode->i_mode = le16_to_cpu(ri->i_mode); i_uid_write(inode, le32_to_cpu(ri->i_uid)); @@ -105,6 +107,7 @@ static int do_read_inode(struct inode *inode) fi->flags = 0; fi->i_advise = ri->i_advise; fi->i_pino = le32_to_cpu(ri->i_pino); + fi->i_dir_level = ri->i_dir_level; get_extent_info(&fi->ext, ri->i_ext); get_inline_info(fi, ri); @@ -175,13 +178,11 @@ bad_inode: void update_inode(struct inode *inode, struct page *node_page) { - struct f2fs_node *rn; struct f2fs_inode *ri; - f2fs_wait_on_page_writeback(node_page, NODE, false); + f2fs_wait_on_page_writeback(node_page, NODE); - rn = F2FS_NODE(node_page); - ri = &(rn->i); + ri = F2FS_INODE(node_page); ri->i_mode = cpu_to_le16(inode->i_mode); ri->i_advise = F2FS_I(inode)->i_advise; @@ -204,6 +205,7 @@ void update_inode(struct inode *inode, struct page *node_page) ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags); ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino); ri->i_generation = cpu_to_le32(inode->i_generation); + ri->i_dir_level = F2FS_I(inode)->i_dir_level; __set_inode_rdev(inode, ri); set_cold_node(inode, node_page); @@ -212,24 +214,29 @@ void update_inode(struct inode *inode, struct page *node_page) clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE); } -int update_inode_page(struct inode *inode) +void update_inode_page(struct inode *inode) { struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); struct page *node_page; - +retry: node_page = get_node_page(sbi, inode->i_ino); - if (IS_ERR(node_page)) - return PTR_ERR(node_page); - + if (IS_ERR(node_page)) { + int err = PTR_ERR(node_page); + if (err == -ENOMEM) { + cond_resched(); + goto retry; + } else if (err != -ENOENT) { + f2fs_stop_checkpoint(sbi); + } + return; + } update_inode(inode, node_page); f2fs_put_page(node_page, 1); - return 0; } int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) { struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); - int ret; if (inode->i_ino == F2FS_NODE_INO(sbi) || inode->i_ino == F2FS_META_INO(sbi)) @@ -243,13 +250,13 @@ int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) * during the urgent cleaning time when runing out of free sections. */ f2fs_lock_op(sbi); - ret = update_inode_page(inode); + update_inode_page(inode); f2fs_unlock_op(sbi); if (wbc) f2fs_balance_fs(sbi); - return ret; + return 0; } /* @@ -260,13 +267,13 @@ void f2fs_evict_inode(struct inode *inode) struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); trace_f2fs_evict_inode(inode); - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); if (inode->i_ino == F2FS_NODE_INO(sbi) || inode->i_ino == F2FS_META_INO(sbi)) goto no_delete; - f2fs_bug_on(atomic_read(&F2FS_I(inode)->dirty_dents)); + f2fs_bug_on(get_dirty_dents(inode)); remove_dirty_dir_inode(inode); if (inode->i_nlink || is_bad_inode(inode)) @@ -281,6 +288,7 @@ void f2fs_evict_inode(struct inode *inode) f2fs_lock_op(sbi); remove_inode_page(inode); + stat_dec_inline_inode(inode); f2fs_unlock_op(sbi); sb_end_intwrite(inode->i_sb); diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c index 575adac17f8b..a9409d19dfd4 100644 --- a/fs/f2fs/namei.c +++ b/fs/f2fs/namei.c @@ -207,6 +207,8 @@ static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry, inode = f2fs_iget(dir->i_sb, ino); if (IS_ERR(inode)) return ERR_CAST(inode); + + stat_inc_inline_inode(inode); } return d_splice_alias(inode, dentry); @@ -424,11 +426,18 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, } f2fs_set_link(new_dir, new_entry, new_page, old_inode); + down_write(&F2FS_I(old_inode)->i_sem); + F2FS_I(old_inode)->i_pino = new_dir->i_ino; + up_write(&F2FS_I(old_inode)->i_sem); new_inode->i_ctime = CURRENT_TIME; + down_write(&F2FS_I(new_inode)->i_sem); if (old_dir_entry) drop_nlink(new_inode); drop_nlink(new_inode); + up_write(&F2FS_I(new_inode)->i_sem); + + mark_inode_dirty(new_inode); if (!new_inode->i_nlink) add_orphan_inode(sbi, new_inode->i_ino); @@ -457,11 +466,16 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, if (old_dir != new_dir) { f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir); + down_write(&F2FS_I(old_inode)->i_sem); + F2FS_I(old_inode)->i_pino = new_dir->i_ino; + up_write(&F2FS_I(old_inode)->i_sem); + update_inode_page(old_inode); } else { kunmap(old_dir_page); f2fs_put_page(old_dir_page, 0); } drop_nlink(old_dir); + mark_inode_dirty(old_dir); update_inode_page(old_dir); } @@ -496,6 +510,7 @@ const struct inode_operations f2fs_dir_inode_operations = { .getattr = f2fs_getattr, .setattr = f2fs_setattr, .get_acl = f2fs_get_acl, + .set_acl = f2fs_set_acl, #ifdef CONFIG_F2FS_FS_XATTR .setxattr = generic_setxattr, .getxattr = generic_getxattr, @@ -522,6 +537,7 @@ const struct inode_operations f2fs_special_inode_operations = { .getattr = f2fs_getattr, .setattr = f2fs_setattr, .get_acl = f2fs_get_acl, + .set_acl = f2fs_set_acl, #ifdef CONFIG_F2FS_FS_XATTR .setxattr = generic_setxattr, .getxattr = generic_getxattr, diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 4ac4150d421d..a161e955c4c8 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -21,9 +21,27 @@ #include "segment.h" #include <trace/events/f2fs.h> +#define on_build_free_nids(nmi) mutex_is_locked(&nm_i->build_lock) + static struct kmem_cache *nat_entry_slab; static struct kmem_cache *free_nid_slab; +static inline bool available_free_memory(struct f2fs_nm_info *nm_i, int type) +{ + struct sysinfo val; + unsigned long mem_size = 0; + + si_meminfo(&val); + if (type == FREE_NIDS) + mem_size = nm_i->fcnt * sizeof(struct free_nid); + else if (type == NAT_ENTRIES) + mem_size += nm_i->nat_cnt * sizeof(struct nat_entry); + mem_size >>= 12; + + /* give 50:50 memory for free nids and nat caches respectively */ + return (mem_size < ((val.totalram * nm_i->ram_thresh) >> 11)); +} + static void clear_node_page_dirty(struct page *page) { struct address_space *mapping = page->mapping; @@ -82,40 +100,6 @@ static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) return dst_page; } -/* - * Readahead NAT pages - */ -static void ra_nat_pages(struct f2fs_sb_info *sbi, int nid) -{ - struct address_space *mapping = sbi->meta_inode->i_mapping; - struct f2fs_nm_info *nm_i = NM_I(sbi); - struct blk_plug plug; - struct page *page; - pgoff_t index; - int i; - - blk_start_plug(&plug); - - for (i = 0; i < FREE_NID_PAGES; i++, nid += NAT_ENTRY_PER_BLOCK) { - if (nid >= nm_i->max_nid) - nid = 0; - index = current_nat_addr(sbi, nid); - - page = grab_cache_page(mapping, index); - if (!page) - continue; - if (PageUptodate(page)) { - f2fs_put_page(page, 1); - continue; - } - if (f2fs_readpage(sbi, page, index, READ)) - continue; - - f2fs_put_page(page, 0); - } - blk_finish_plug(&plug); -} - static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) { return radix_tree_lookup(&nm_i->nat_root, n); @@ -149,6 +133,20 @@ int is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) return is_cp; } +bool fsync_mark_done(struct f2fs_sb_info *sbi, nid_t nid) +{ + struct f2fs_nm_info *nm_i = NM_I(sbi); + struct nat_entry *e; + bool fsync_done = false; + + read_lock(&nm_i->nat_tree_lock); + e = __lookup_nat_cache(nm_i, nid); + if (e) + fsync_done = e->fsync_done; + read_unlock(&nm_i->nat_tree_lock); + return fsync_done; +} + static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid) { struct nat_entry *new; @@ -162,6 +160,7 @@ static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid) } memset(new, 0, sizeof(struct nat_entry)); nat_set_nid(new, nid); + new->checkpointed = true; list_add_tail(&new->list, &nm_i->nat_entries); nm_i->nat_cnt++; return new; @@ -183,13 +182,12 @@ retry: nat_set_blkaddr(e, le32_to_cpu(ne->block_addr)); nat_set_ino(e, le32_to_cpu(ne->ino)); nat_set_version(e, ne->version); - e->checkpointed = true; } write_unlock(&nm_i->nat_tree_lock); } static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, - block_t new_blkaddr) + block_t new_blkaddr, bool fsync_done) { struct f2fs_nm_info *nm_i = NM_I(sbi); struct nat_entry *e; @@ -203,7 +201,6 @@ retry: goto retry; } e->ni = *ni; - e->checkpointed = true; f2fs_bug_on(ni->blk_addr == NEW_ADDR); } else if (new_blkaddr == NEW_ADDR) { /* @@ -215,9 +212,6 @@ retry: f2fs_bug_on(ni->blk_addr != NULL_ADDR); } - if (new_blkaddr == NEW_ADDR) - e->checkpointed = false; - /* sanity check */ f2fs_bug_on(nat_get_blkaddr(e) != ni->blk_addr); f2fs_bug_on(nat_get_blkaddr(e) == NULL_ADDR && @@ -237,6 +231,11 @@ retry: /* change address */ nat_set_blkaddr(e, new_blkaddr); __set_nat_cache_dirty(nm_i, e); + + /* update fsync_mark if its inode nat entry is still alive */ + e = __lookup_nat_cache(nm_i, ni->ino); + if (e) + e->fsync_done = fsync_done; write_unlock(&nm_i->nat_tree_lock); } @@ -244,7 +243,7 @@ int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) { struct f2fs_nm_info *nm_i = NM_I(sbi); - if (nm_i->nat_cnt <= NM_WOUT_THRESHOLD) + if (available_free_memory(nm_i, NAT_ENTRIES)) return 0; write_lock(&nm_i->nat_tree_lock); @@ -391,8 +390,8 @@ got: /* * Caller should call f2fs_put_dnode(dn). - * Also, it should grab and release a mutex by calling mutex_lock_op() and - * mutex_unlock_op() only if ro is not set RDONLY_NODE. + * Also, it should grab and release a rwsem by calling f2fs_lock_op() and + * f2fs_unlock_op() only if ro is not set RDONLY_NODE. * In the case of RDONLY_NODE, we don't need to care about mutex. */ int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) @@ -502,8 +501,8 @@ static void truncate_node(struct dnode_of_data *dn) /* Deallocate node address */ invalidate_blocks(sbi, ni.blk_addr); - dec_valid_node_count(sbi, dn->inode, 1); - set_node_addr(sbi, &ni, NULL_ADDR); + dec_valid_node_count(sbi, dn->inode); + set_node_addr(sbi, &ni, NULL_ADDR, false); if (dn->nid == dn->inode->i_ino) { remove_orphan_inode(sbi, dn->nid); @@ -516,6 +515,10 @@ invalidate: F2FS_SET_SB_DIRT(sbi); f2fs_put_page(dn->node_page, 1); + + invalidate_mapping_pages(NODE_MAPPING(sbi), + dn->node_page->index, dn->node_page->index); + dn->node_page = NULL; trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); } @@ -631,19 +634,19 @@ static int truncate_partial_nodes(struct dnode_of_data *dn, return 0; /* get indirect nodes in the path */ - for (i = 0; i < depth - 1; i++) { + for (i = 0; i < idx + 1; i++) { /* refernece count'll be increased */ pages[i] = get_node_page(sbi, nid[i]); if (IS_ERR(pages[i])) { - depth = i + 1; err = PTR_ERR(pages[i]); + idx = i - 1; goto fail; } nid[i + 1] = get_nid(pages[i], offset[i + 1], false); } /* free direct nodes linked to a partial indirect node */ - for (i = offset[depth - 1]; i < NIDS_PER_BLOCK; i++) { + for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { child_nid = get_nid(pages[idx], i, false); if (!child_nid) continue; @@ -654,7 +657,7 @@ static int truncate_partial_nodes(struct dnode_of_data *dn, set_nid(pages[idx], i, 0, false); } - if (offset[depth - 1] == 0) { + if (offset[idx + 1] == 0) { dn->node_page = pages[idx]; dn->nid = nid[idx]; truncate_node(dn); @@ -662,9 +665,10 @@ static int truncate_partial_nodes(struct dnode_of_data *dn, f2fs_put_page(pages[idx], 1); } offset[idx]++; - offset[depth - 1] = 0; + offset[idx + 1] = 0; + idx--; fail: - for (i = depth - 3; i >= 0; i--) + for (i = idx; i >= 0; i--) f2fs_put_page(pages[i], 1); trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); @@ -678,11 +682,10 @@ fail: int truncate_inode_blocks(struct inode *inode, pgoff_t from) { struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); - struct address_space *node_mapping = sbi->node_inode->i_mapping; int err = 0, cont = 1; int level, offset[4], noffset[4]; unsigned int nofs = 0; - struct f2fs_node *rn; + struct f2fs_inode *ri; struct dnode_of_data dn; struct page *page; @@ -699,7 +702,7 @@ restart: set_new_dnode(&dn, inode, page, NULL, 0); unlock_page(page); - rn = F2FS_NODE(page); + ri = F2FS_INODE(page); switch (level) { case 0: case 1: @@ -709,7 +712,7 @@ restart: nofs = noffset[1]; if (!offset[level - 1]) goto skip_partial; - err = truncate_partial_nodes(&dn, &rn->i, offset, level); + err = truncate_partial_nodes(&dn, ri, offset, level); if (err < 0 && err != -ENOENT) goto fail; nofs += 1 + NIDS_PER_BLOCK; @@ -718,7 +721,7 @@ restart: nofs = 5 + 2 * NIDS_PER_BLOCK; if (!offset[level - 1]) goto skip_partial; - err = truncate_partial_nodes(&dn, &rn->i, offset, level); + err = truncate_partial_nodes(&dn, ri, offset, level); if (err < 0 && err != -ENOENT) goto fail; break; @@ -728,7 +731,7 @@ restart: skip_partial: while (cont) { - dn.nid = le32_to_cpu(rn->i.i_nid[offset[0] - NODE_DIR1_BLOCK]); + dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); switch (offset[0]) { case NODE_DIR1_BLOCK: case NODE_DIR2_BLOCK: @@ -751,14 +754,14 @@ skip_partial: if (err < 0 && err != -ENOENT) goto fail; if (offset[1] == 0 && - rn->i.i_nid[offset[0] - NODE_DIR1_BLOCK]) { + ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { lock_page(page); - if (page->mapping != node_mapping) { + if (unlikely(page->mapping != NODE_MAPPING(sbi))) { f2fs_put_page(page, 1); goto restart; } - wait_on_page_writeback(page); - rn->i.i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; + f2fs_wait_on_page_writeback(page, NODE); + ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; set_page_dirty(page); unlock_page(page); } @@ -794,38 +797,34 @@ int truncate_xattr_node(struct inode *inode, struct page *page) set_new_dnode(&dn, inode, page, npage, nid); if (page) - dn.inode_page_locked = 1; + dn.inode_page_locked = true; truncate_node(&dn); return 0; } /* - * Caller should grab and release a mutex by calling mutex_lock_op() and - * mutex_unlock_op(). + * Caller should grab and release a rwsem by calling f2fs_lock_op() and + * f2fs_unlock_op(). */ -int remove_inode_page(struct inode *inode) +void remove_inode_page(struct inode *inode) { struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); struct page *page; nid_t ino = inode->i_ino; struct dnode_of_data dn; - int err; page = get_node_page(sbi, ino); if (IS_ERR(page)) - return PTR_ERR(page); + return; - err = truncate_xattr_node(inode, page); - if (err) { + if (truncate_xattr_node(inode, page)) { f2fs_put_page(page, 1); - return err; + return; } - /* 0 is possible, after f2fs_new_inode() is failed */ f2fs_bug_on(inode->i_blocks != 0 && inode->i_blocks != 1); set_new_dnode(&dn, inode, page, page, ino); truncate_node(&dn); - return 0; } struct page *new_inode_page(struct inode *inode, const struct qstr *name) @@ -843,19 +842,19 @@ struct page *new_node_page(struct dnode_of_data *dn, unsigned int ofs, struct page *ipage) { struct f2fs_sb_info *sbi = F2FS_SB(dn->inode->i_sb); - struct address_space *mapping = sbi->node_inode->i_mapping; struct node_info old_ni, new_ni; struct page *page; int err; - if (is_inode_flag_set(F2FS_I(dn->inode), FI_NO_ALLOC)) + if (unlikely(is_inode_flag_set(F2FS_I(dn->inode), FI_NO_ALLOC))) return ERR_PTR(-EPERM); - page = grab_cache_page(mapping, dn->nid); + page = grab_cache_page_write_begin(NODE_MAPPING(sbi), + dn->nid, AOP_FLAG_NOFS); if (!page) return ERR_PTR(-ENOMEM); - if (!inc_valid_node_count(sbi, dn->inode, 1)) { + if (unlikely(!inc_valid_node_count(sbi, dn->inode))) { err = -ENOSPC; goto fail; } @@ -866,14 +865,14 @@ struct page *new_node_page(struct dnode_of_data *dn, f2fs_bug_on(old_ni.blk_addr != NULL_ADDR); new_ni = old_ni; new_ni.ino = dn->inode->i_ino; - set_node_addr(sbi, &new_ni, NEW_ADDR); + set_node_addr(sbi, &new_ni, NEW_ADDR, false); fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); set_cold_node(dn->inode, page); SetPageUptodate(page); set_page_dirty(page); - if (ofs == XATTR_NODE_OFFSET) + if (f2fs_has_xattr_block(ofs)) F2FS_I(dn->inode)->i_xattr_nid = dn->nid; dn->node_page = page; @@ -898,14 +897,14 @@ fail: * LOCKED_PAGE: f2fs_put_page(page, 1) * error: nothing */ -static int read_node_page(struct page *page, int type) +static int read_node_page(struct page *page, int rw) { struct f2fs_sb_info *sbi = F2FS_SB(page->mapping->host->i_sb); struct node_info ni; get_node_info(sbi, page->index, &ni); - if (ni.blk_addr == NULL_ADDR) { + if (unlikely(ni.blk_addr == NULL_ADDR)) { f2fs_put_page(page, 1); return -ENOENT; } @@ -913,7 +912,7 @@ static int read_node_page(struct page *page, int type) if (PageUptodate(page)) return LOCKED_PAGE; - return f2fs_readpage(sbi, page, ni.blk_addr, type); + return f2fs_submit_page_bio(sbi, page, ni.blk_addr, rw); } /* @@ -921,18 +920,17 @@ static int read_node_page(struct page *page, int type) */ void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) { - struct address_space *mapping = sbi->node_inode->i_mapping; struct page *apage; int err; - apage = find_get_page(mapping, nid); + apage = find_get_page(NODE_MAPPING(sbi), nid); if (apage && PageUptodate(apage)) { f2fs_put_page(apage, 0); return; } f2fs_put_page(apage, 0); - apage = grab_cache_page(mapping, nid); + apage = grab_cache_page(NODE_MAPPING(sbi), nid); if (!apage) return; @@ -945,11 +943,11 @@ void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) { - struct address_space *mapping = sbi->node_inode->i_mapping; struct page *page; int err; repeat: - page = grab_cache_page(mapping, nid); + page = grab_cache_page_write_begin(NODE_MAPPING(sbi), + nid, AOP_FLAG_NOFS); if (!page) return ERR_PTR(-ENOMEM); @@ -960,16 +958,15 @@ repeat: goto got_it; lock_page(page); - if (!PageUptodate(page)) { + if (unlikely(!PageUptodate(page) || nid != nid_of_node(page))) { f2fs_put_page(page, 1); return ERR_PTR(-EIO); } - if (page->mapping != mapping) { + if (unlikely(page->mapping != NODE_MAPPING(sbi))) { f2fs_put_page(page, 1); goto repeat; } got_it: - f2fs_bug_on(nid != nid_of_node(page)); mark_page_accessed(page); return page; } @@ -981,7 +978,6 @@ got_it: struct page *get_node_page_ra(struct page *parent, int start) { struct f2fs_sb_info *sbi = F2FS_SB(parent->mapping->host->i_sb); - struct address_space *mapping = sbi->node_inode->i_mapping; struct blk_plug plug; struct page *page; int err, i, end; @@ -992,7 +988,7 @@ struct page *get_node_page_ra(struct page *parent, int start) if (!nid) return ERR_PTR(-ENOENT); repeat: - page = grab_cache_page(mapping, nid); + page = grab_cache_page(NODE_MAPPING(sbi), nid); if (!page) return ERR_PTR(-ENOMEM); @@ -1017,12 +1013,12 @@ repeat: blk_finish_plug(&plug); lock_page(page); - if (page->mapping != mapping) { + if (unlikely(page->mapping != NODE_MAPPING(sbi))) { f2fs_put_page(page, 1); goto repeat; } page_hit: - if (!PageUptodate(page)) { + if (unlikely(!PageUptodate(page))) { f2fs_put_page(page, 1); return ERR_PTR(-EIO); } @@ -1048,7 +1044,6 @@ void sync_inode_page(struct dnode_of_data *dn) int sync_node_pages(struct f2fs_sb_info *sbi, nid_t ino, struct writeback_control *wbc) { - struct address_space *mapping = sbi->node_inode->i_mapping; pgoff_t index, end; struct pagevec pvec; int step = ino ? 2 : 0; @@ -1062,7 +1057,7 @@ next_step: while (index <= end) { int i, nr_pages; - nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, + nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY, min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); if (nr_pages == 0) @@ -1095,7 +1090,7 @@ next_step: else if (!trylock_page(page)) continue; - if (unlikely(page->mapping != mapping)) { + if (unlikely(page->mapping != NODE_MAPPING(sbi))) { continue_unlock: unlock_page(page); continue; @@ -1122,7 +1117,7 @@ continue_unlock: set_fsync_mark(page, 0); set_dentry_mark(page, 0); } - mapping->a_ops->writepage(page, wbc); + NODE_MAPPING(sbi)->a_ops->writepage(page, wbc); wrote++; if (--wbc->nr_to_write == 0) @@ -1143,35 +1138,35 @@ continue_unlock: } if (wrote) - f2fs_submit_bio(sbi, NODE, wbc->sync_mode == WB_SYNC_ALL); - + f2fs_submit_merged_bio(sbi, NODE, WRITE); return nwritten; } int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) { - struct address_space *mapping = sbi->node_inode->i_mapping; pgoff_t index = 0, end = LONG_MAX; struct pagevec pvec; - int nr_pages; int ret2 = 0, ret = 0; pagevec_init(&pvec, 0); - while ((index <= end) && - (nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, - PAGECACHE_TAG_WRITEBACK, - min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1)) != 0) { - unsigned i; + + while (index <= end) { + int i, nr_pages; + nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, + PAGECACHE_TAG_WRITEBACK, + min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); + if (nr_pages == 0) + break; for (i = 0; i < nr_pages; i++) { struct page *page = pvec.pages[i]; /* until radix tree lookup accepts end_index */ - if (page->index > end) + if (unlikely(page->index > end)) continue; if (ino && ino_of_node(page) == ino) { - wait_on_page_writeback(page); + f2fs_wait_on_page_writeback(page, NODE); if (TestClearPageError(page)) ret = -EIO; } @@ -1180,9 +1175,9 @@ int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) cond_resched(); } - if (test_and_clear_bit(AS_ENOSPC, &mapping->flags)) + if (unlikely(test_and_clear_bit(AS_ENOSPC, &NODE_MAPPING(sbi)->flags))) ret2 = -ENOSPC; - if (test_and_clear_bit(AS_EIO, &mapping->flags)) + if (unlikely(test_and_clear_bit(AS_EIO, &NODE_MAPPING(sbi)->flags))) ret2 = -EIO; if (!ret) ret = ret2; @@ -1196,11 +1191,15 @@ static int f2fs_write_node_page(struct page *page, nid_t nid; block_t new_addr; struct node_info ni; + struct f2fs_io_info fio = { + .type = NODE, + .rw = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : WRITE, + }; - if (sbi->por_doing) + if (unlikely(sbi->por_doing)) goto redirty_out; - wait_on_page_writeback(page); + f2fs_wait_on_page_writeback(page, NODE); /* get old block addr of this node page */ nid = nid_of_node(page); @@ -1209,7 +1208,7 @@ static int f2fs_write_node_page(struct page *page, get_node_info(sbi, nid, &ni); /* This page is already truncated */ - if (ni.blk_addr == NULL_ADDR) { + if (unlikely(ni.blk_addr == NULL_ADDR)) { dec_page_count(sbi, F2FS_DIRTY_NODES); unlock_page(page); return 0; @@ -1220,8 +1219,8 @@ static int f2fs_write_node_page(struct page *page, mutex_lock(&sbi->node_write); set_page_writeback(page); - write_node_page(sbi, page, nid, ni.blk_addr, &new_addr); - set_node_addr(sbi, &ni, new_addr); + write_node_page(sbi, page, &fio, nid, ni.blk_addr, &new_addr); + set_node_addr(sbi, &ni, new_addr, is_fsync_dnode(page)); dec_page_count(sbi, F2FS_DIRTY_NODES); mutex_unlock(&sbi->node_write); unlock_page(page); @@ -1230,34 +1229,32 @@ static int f2fs_write_node_page(struct page *page, redirty_out: dec_page_count(sbi, F2FS_DIRTY_NODES); wbc->pages_skipped++; + account_page_redirty(page); set_page_dirty(page); return AOP_WRITEPAGE_ACTIVATE; } -/* - * It is very important to gather dirty pages and write at once, so that we can - * submit a big bio without interfering other data writes. - * Be default, 512 pages (2MB) * 3 node types, is more reasonable. - */ -#define COLLECT_DIRTY_NODES 1536 static int f2fs_write_node_pages(struct address_space *mapping, struct writeback_control *wbc) { struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb); - long nr_to_write = wbc->nr_to_write; + long diff; /* balancing f2fs's metadata in background */ f2fs_balance_fs_bg(sbi); /* collect a number of dirty node pages and write together */ - if (get_pages(sbi, F2FS_DIRTY_NODES) < COLLECT_DIRTY_NODES) - return 0; + if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) + goto skip_write; - /* if mounting is failed, skip writing node pages */ - wbc->nr_to_write = 3 * max_hw_blocks(sbi); + diff = nr_pages_to_write(sbi, NODE, wbc); + wbc->sync_mode = WB_SYNC_NONE; sync_node_pages(sbi, 0, wbc); - wbc->nr_to_write = nr_to_write - (3 * max_hw_blocks(sbi) - - wbc->nr_to_write); + wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); + return 0; + +skip_write: + wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); return 0; } @@ -1305,22 +1302,17 @@ const struct address_space_operations f2fs_node_aops = { .releasepage = f2fs_release_node_page, }; -static struct free_nid *__lookup_free_nid_list(nid_t n, struct list_head *head) +static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, + nid_t n) { - struct list_head *this; - struct free_nid *i; - list_for_each(this, head) { - i = list_entry(this, struct free_nid, list); - if (i->nid == n) - return i; - } - return NULL; + return radix_tree_lookup(&nm_i->free_nid_root, n); } -static void __del_from_free_nid_list(struct free_nid *i) +static void __del_from_free_nid_list(struct f2fs_nm_info *nm_i, + struct free_nid *i) { list_del(&i->list); - kmem_cache_free(free_nid_slab, i); + radix_tree_delete(&nm_i->free_nid_root, i->nid); } static int add_free_nid(struct f2fs_nm_info *nm_i, nid_t nid, bool build) @@ -1329,18 +1321,19 @@ static int add_free_nid(struct f2fs_nm_info *nm_i, nid_t nid, bool build) struct nat_entry *ne; bool allocated = false; - if (nm_i->fcnt > 2 * MAX_FREE_NIDS) + if (!available_free_memory(nm_i, FREE_NIDS)) return -1; /* 0 nid should not be used */ - if (nid == 0) + if (unlikely(nid == 0)) return 0; if (build) { /* do not add allocated nids */ read_lock(&nm_i->nat_tree_lock); ne = __lookup_nat_cache(nm_i, nid); - if (ne && nat_get_blkaddr(ne) != NULL_ADDR) + if (ne && + (!ne->checkpointed || nat_get_blkaddr(ne) != NULL_ADDR)) allocated = true; read_unlock(&nm_i->nat_tree_lock); if (allocated) @@ -1352,7 +1345,7 @@ static int add_free_nid(struct f2fs_nm_info *nm_i, nid_t nid, bool build) i->state = NID_NEW; spin_lock(&nm_i->free_nid_list_lock); - if (__lookup_free_nid_list(nid, &nm_i->free_nid_list)) { + if (radix_tree_insert(&nm_i->free_nid_root, i->nid, i)) { spin_unlock(&nm_i->free_nid_list_lock); kmem_cache_free(free_nid_slab, i); return 0; @@ -1366,13 +1359,19 @@ static int add_free_nid(struct f2fs_nm_info *nm_i, nid_t nid, bool build) static void remove_free_nid(struct f2fs_nm_info *nm_i, nid_t nid) { struct free_nid *i; + bool need_free = false; + spin_lock(&nm_i->free_nid_list_lock); - i = __lookup_free_nid_list(nid, &nm_i->free_nid_list); + i = __lookup_free_nid_list(nm_i, nid); if (i && i->state == NID_NEW) { - __del_from_free_nid_list(i); + __del_from_free_nid_list(nm_i, i); nm_i->fcnt--; + need_free = true; } spin_unlock(&nm_i->free_nid_list_lock); + + if (need_free) + kmem_cache_free(free_nid_slab, i); } static void scan_nat_page(struct f2fs_nm_info *nm_i, @@ -1386,7 +1385,7 @@ static void scan_nat_page(struct f2fs_nm_info *nm_i, for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { - if (start_nid >= nm_i->max_nid) + if (unlikely(start_nid >= nm_i->max_nid)) break; blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); @@ -1411,7 +1410,7 @@ static void build_free_nids(struct f2fs_sb_info *sbi) return; /* readahead nat pages to be scanned */ - ra_nat_pages(sbi, nid); + ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, META_NAT); while (1) { struct page *page = get_current_nat_page(sbi, nid); @@ -1420,7 +1419,7 @@ static void build_free_nids(struct f2fs_sb_info *sbi) f2fs_put_page(page, 1); nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); - if (nid >= nm_i->max_nid) + if (unlikely(nid >= nm_i->max_nid)) nid = 0; if (i++ == FREE_NID_PAGES) @@ -1452,21 +1451,18 @@ bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) { struct f2fs_nm_info *nm_i = NM_I(sbi); struct free_nid *i = NULL; - struct list_head *this; retry: - if (sbi->total_valid_node_count + 1 >= nm_i->max_nid) + if (unlikely(sbi->total_valid_node_count + 1 >= nm_i->max_nid)) return false; spin_lock(&nm_i->free_nid_list_lock); /* We should not use stale free nids created by build_free_nids */ - if (nm_i->fcnt && !sbi->on_build_free_nids) { + if (nm_i->fcnt && !on_build_free_nids(nm_i)) { f2fs_bug_on(list_empty(&nm_i->free_nid_list)); - list_for_each(this, &nm_i->free_nid_list) { - i = list_entry(this, struct free_nid, list); + list_for_each_entry(i, &nm_i->free_nid_list, list) if (i->state == NID_NEW) break; - } f2fs_bug_on(i->state != NID_NEW); *nid = i->nid; @@ -1479,9 +1475,7 @@ retry: /* Let's scan nat pages and its caches to get free nids */ mutex_lock(&nm_i->build_lock); - sbi->on_build_free_nids = true; build_free_nids(sbi); - sbi->on_build_free_nids = false; mutex_unlock(&nm_i->build_lock); goto retry; } @@ -1495,10 +1489,12 @@ void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) struct free_nid *i; spin_lock(&nm_i->free_nid_list_lock); - i = __lookup_free_nid_list(nid, &nm_i->free_nid_list); + i = __lookup_free_nid_list(nm_i, nid); f2fs_bug_on(!i || i->state != NID_ALLOC); - __del_from_free_nid_list(i); + __del_from_free_nid_list(nm_i, i); spin_unlock(&nm_i->free_nid_list_lock); + + kmem_cache_free(free_nid_slab, i); } /* @@ -1508,20 +1504,25 @@ void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) { struct f2fs_nm_info *nm_i = NM_I(sbi); struct free_nid *i; + bool need_free = false; if (!nid) return; spin_lock(&nm_i->free_nid_list_lock); - i = __lookup_free_nid_list(nid, &nm_i->free_nid_list); + i = __lookup_free_nid_list(nm_i, nid); f2fs_bug_on(!i || i->state != NID_ALLOC); - if (nm_i->fcnt > 2 * MAX_FREE_NIDS) { - __del_from_free_nid_list(i); + if (!available_free_memory(nm_i, FREE_NIDS)) { + __del_from_free_nid_list(nm_i, i); + need_free = true; } else { i->state = NID_NEW; nm_i->fcnt++; } spin_unlock(&nm_i->free_nid_list_lock); + + if (need_free) + kmem_cache_free(free_nid_slab, i); } void recover_node_page(struct f2fs_sb_info *sbi, struct page *page, @@ -1529,19 +1530,91 @@ void recover_node_page(struct f2fs_sb_info *sbi, struct page *page, block_t new_blkaddr) { rewrite_node_page(sbi, page, sum, ni->blk_addr, new_blkaddr); - set_node_addr(sbi, ni, new_blkaddr); + set_node_addr(sbi, ni, new_blkaddr, false); clear_node_page_dirty(page); } +void recover_inline_xattr(struct inode *inode, struct page *page) +{ + struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + void *src_addr, *dst_addr; + size_t inline_size; + struct page *ipage; + struct f2fs_inode *ri; + + if (!f2fs_has_inline_xattr(inode)) + return; + + if (!IS_INODE(page)) + return; + + ri = F2FS_INODE(page); + if (!(ri->i_inline & F2FS_INLINE_XATTR)) + return; + + ipage = get_node_page(sbi, inode->i_ino); + f2fs_bug_on(IS_ERR(ipage)); + + dst_addr = inline_xattr_addr(ipage); + src_addr = inline_xattr_addr(page); + inline_size = inline_xattr_size(inode); + + memcpy(dst_addr, src_addr, inline_size); + + update_inode(inode, ipage); + f2fs_put_page(ipage, 1); +} + +bool recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr) +{ + struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; + nid_t new_xnid = nid_of_node(page); + struct node_info ni; + + recover_inline_xattr(inode, page); + + if (!f2fs_has_xattr_block(ofs_of_node(page))) + return false; + + /* 1: invalidate the previous xattr nid */ + if (!prev_xnid) + goto recover_xnid; + + /* Deallocate node address */ + get_node_info(sbi, prev_xnid, &ni); + f2fs_bug_on(ni.blk_addr == NULL_ADDR); + invalidate_blocks(sbi, ni.blk_addr); + dec_valid_node_count(sbi, inode); + set_node_addr(sbi, &ni, NULL_ADDR, false); + +recover_xnid: + /* 2: allocate new xattr nid */ + if (unlikely(!inc_valid_node_count(sbi, inode))) + f2fs_bug_on(1); + + remove_free_nid(NM_I(sbi), new_xnid); + get_node_info(sbi, new_xnid, &ni); + ni.ino = inode->i_ino; + set_node_addr(sbi, &ni, NEW_ADDR, false); + F2FS_I(inode)->i_xattr_nid = new_xnid; + + /* 3: update xattr blkaddr */ + refresh_sit_entry(sbi, NEW_ADDR, blkaddr); + set_node_addr(sbi, &ni, blkaddr, false); + + update_inode_page(inode); + return true; +} + int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) { - struct address_space *mapping = sbi->node_inode->i_mapping; - struct f2fs_node *src, *dst; + struct f2fs_inode *src, *dst; nid_t ino = ino_of_node(page); struct node_info old_ni, new_ni; struct page *ipage; - ipage = grab_cache_page(mapping, ino); + ipage = grab_cache_page(NODE_MAPPING(sbi), ino); if (!ipage) return -ENOMEM; @@ -1552,67 +1625,104 @@ int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) SetPageUptodate(ipage); fill_node_footer(ipage, ino, ino, 0, true); - src = F2FS_NODE(page); - dst = F2FS_NODE(ipage); + src = F2FS_INODE(page); + dst = F2FS_INODE(ipage); - memcpy(dst, src, (unsigned long)&src->i.i_ext - (unsigned long)&src->i); - dst->i.i_size = 0; - dst->i.i_blocks = cpu_to_le64(1); - dst->i.i_links = cpu_to_le32(1); - dst->i.i_xattr_nid = 0; + memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); + dst->i_size = 0; + dst->i_blocks = cpu_to_le64(1); + dst->i_links = cpu_to_le32(1); + dst->i_xattr_nid = 0; new_ni = old_ni; new_ni.ino = ino; - if (!inc_valid_node_count(sbi, NULL, 1)) + if (unlikely(!inc_valid_node_count(sbi, NULL))) WARN_ON(1); - set_node_addr(sbi, &new_ni, NEW_ADDR); + set_node_addr(sbi, &new_ni, NEW_ADDR, false); inc_valid_inode_count(sbi); f2fs_put_page(ipage, 1); return 0; } +/* + * ra_sum_pages() merge contiguous pages into one bio and submit. + * these pre-readed pages are linked in pages list. + */ +static int ra_sum_pages(struct f2fs_sb_info *sbi, struct list_head *pages, + int start, int nrpages) +{ + struct page *page; + int page_idx = start; + struct f2fs_io_info fio = { + .type = META, + .rw = READ_SYNC | REQ_META | REQ_PRIO + }; + + for (; page_idx < start + nrpages; page_idx++) { + /* alloc temporal page for read node summary info*/ + page = alloc_page(GFP_F2FS_ZERO); + if (!page) + break; + + lock_page(page); + page->index = page_idx; + list_add_tail(&page->lru, pages); + } + + list_for_each_entry(page, pages, lru) + f2fs_submit_page_mbio(sbi, page, page->index, &fio); + + f2fs_submit_merged_bio(sbi, META, READ); + + return page_idx - start; +} + int restore_node_summary(struct f2fs_sb_info *sbi, unsigned int segno, struct f2fs_summary_block *sum) { struct f2fs_node *rn; struct f2fs_summary *sum_entry; - struct page *page; + struct page *page, *tmp; block_t addr; - int i, last_offset; - - /* alloc temporal page for read node */ - page = alloc_page(GFP_NOFS | __GFP_ZERO); - if (!page) - return -ENOMEM; - lock_page(page); + int bio_blocks = MAX_BIO_BLOCKS(max_hw_blocks(sbi)); + int i, last_offset, nrpages, err = 0; + LIST_HEAD(page_list); /* scan the node segment */ last_offset = sbi->blocks_per_seg; addr = START_BLOCK(sbi, segno); sum_entry = &sum->entries[0]; - for (i = 0; i < last_offset; i++, sum_entry++) { - /* - * In order to read next node page, - * we must clear PageUptodate flag. - */ - ClearPageUptodate(page); + for (i = 0; !err && i < last_offset; i += nrpages, addr += nrpages) { + nrpages = min(last_offset - i, bio_blocks); - if (f2fs_readpage(sbi, page, addr, READ_SYNC)) - goto out; + /* read ahead node pages */ + nrpages = ra_sum_pages(sbi, &page_list, addr, nrpages); + if (!nrpages) + return -ENOMEM; - lock_page(page); - rn = F2FS_NODE(page); - sum_entry->nid = rn->footer.nid; - sum_entry->version = 0; - sum_entry->ofs_in_node = 0; - addr++; + list_for_each_entry_safe(page, tmp, &page_list, lru) { + if (err) + goto skip; + + lock_page(page); + if (unlikely(!PageUptodate(page))) { + err = -EIO; + } else { + rn = F2FS_NODE(page); + sum_entry->nid = rn->footer.nid; + sum_entry->version = 0; + sum_entry->ofs_in_node = 0; + sum_entry++; + } + unlock_page(page); +skip: + list_del(&page->lru); + __free_pages(page, 0); + } } - unlock_page(page); -out: - __free_pages(page, 0); - return 0; + return err; } static bool flush_nats_in_journal(struct f2fs_sb_info *sbi) @@ -1667,7 +1777,7 @@ void flush_nat_entries(struct f2fs_sb_info *sbi) struct f2fs_nm_info *nm_i = NM_I(sbi); struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); struct f2fs_summary_block *sum = curseg->sum_blk; - struct list_head *cur, *n; + struct nat_entry *ne, *cur; struct page *page = NULL; struct f2fs_nat_block *nat_blk = NULL; nid_t start_nid = 0, end_nid = 0; @@ -1679,18 +1789,17 @@ void flush_nat_entries(struct f2fs_sb_info *sbi) mutex_lock(&curseg->curseg_mutex); /* 1) flush dirty nat caches */ - list_for_each_safe(cur, n, &nm_i->dirty_nat_entries) { - struct nat_entry *ne; + list_for_each_entry_safe(ne, cur, &nm_i->dirty_nat_entries, list) { nid_t nid; struct f2fs_nat_entry raw_ne; int offset = -1; block_t new_blkaddr; - ne = list_entry(cur, struct nat_entry, list); - nid = nat_get_nid(ne); - if (nat_get_blkaddr(ne) == NEW_ADDR) continue; + + nid = nat_get_nid(ne); + if (flushed) goto to_nat_page; @@ -1741,16 +1850,12 @@ flush_now: } else { write_lock(&nm_i->nat_tree_lock); __clear_nat_cache_dirty(nm_i, ne); - ne->checkpointed = true; write_unlock(&nm_i->nat_tree_lock); } } if (!flushed) mutex_unlock(&curseg->curseg_mutex); f2fs_put_page(page, 1); - - /* 2) shrink nat caches if necessary */ - try_to_free_nats(sbi, nm_i->nat_cnt - NM_WOUT_THRESHOLD); } static int init_node_manager(struct f2fs_sb_info *sbi) @@ -1765,10 +1870,14 @@ static int init_node_manager(struct f2fs_sb_info *sbi) /* segment_count_nat includes pair segment so divide to 2. */ nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); - nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nat_blocks; + + /* not used nids: 0, node, meta, (and root counted as valid node) */ + nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nat_blocks - 3; nm_i->fcnt = 0; nm_i->nat_cnt = 0; + nm_i->ram_thresh = DEF_RAM_THRESHOLD; + INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); INIT_LIST_HEAD(&nm_i->free_nid_list); INIT_RADIX_TREE(&nm_i->nat_root, GFP_ATOMIC); INIT_LIST_HEAD(&nm_i->nat_entries); @@ -1822,8 +1931,11 @@ void destroy_node_manager(struct f2fs_sb_info *sbi) spin_lock(&nm_i->free_nid_list_lock); list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { f2fs_bug_on(i->state == NID_ALLOC); - __del_from_free_nid_list(i); + __del_from_free_nid_list(nm_i, i); nm_i->fcnt--; + spin_unlock(&nm_i->free_nid_list_lock); + kmem_cache_free(free_nid_slab, i); + spin_lock(&nm_i->free_nid_list_lock); } f2fs_bug_on(nm_i->fcnt); spin_unlock(&nm_i->free_nid_list_lock); @@ -1833,11 +1945,9 @@ void destroy_node_manager(struct f2fs_sb_info *sbi) while ((found = __gang_lookup_nat_cache(nm_i, nid, NATVEC_SIZE, natvec))) { unsigned idx; - for (idx = 0; idx < found; idx++) { - struct nat_entry *e = natvec[idx]; - nid = nat_get_nid(e) + 1; - __del_from_nat_cache(nm_i, e); - } + nid = nat_get_nid(natvec[found - 1]) + 1; + for (idx = 0; idx < found; idx++) + __del_from_nat_cache(nm_i, natvec[idx]); } f2fs_bug_on(nm_i->nat_cnt); write_unlock(&nm_i->nat_tree_lock); @@ -1850,12 +1960,12 @@ void destroy_node_manager(struct f2fs_sb_info *sbi) int __init create_node_manager_caches(void) { nat_entry_slab = f2fs_kmem_cache_create("nat_entry", - sizeof(struct nat_entry), NULL); + sizeof(struct nat_entry)); if (!nat_entry_slab) return -ENOMEM; free_nid_slab = f2fs_kmem_cache_create("free_nid", - sizeof(struct free_nid), NULL); + sizeof(struct free_nid)); if (!free_nid_slab) { kmem_cache_destroy(nat_entry_slab); return -ENOMEM; diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h index 3496bb3e15dc..5decc1a375f0 100644 --- a/fs/f2fs/node.h +++ b/fs/f2fs/node.h @@ -17,14 +17,11 @@ /* # of pages to perform readahead before building free nids */ #define FREE_NID_PAGES 4 -/* maximum # of free node ids to produce during build_free_nids */ -#define MAX_FREE_NIDS (NAT_ENTRY_PER_BLOCK * FREE_NID_PAGES) - /* maximum readahead size for node during getting data blocks */ #define MAX_RA_NODE 128 -/* maximum cached nat entries to manage memory footprint */ -#define NM_WOUT_THRESHOLD (64 * NAT_ENTRY_PER_BLOCK) +/* control the memory footprint threshold (10MB per 1GB ram) */ +#define DEF_RAM_THRESHOLD 10 /* vector size for gang look-up from nat cache that consists of radix tree */ #define NATVEC_SIZE 64 @@ -45,6 +42,7 @@ struct node_info { struct nat_entry { struct list_head list; /* for clean or dirty nat list */ bool checkpointed; /* whether it is checkpointed or not */ + bool fsync_done; /* whether the latest node has fsync mark */ struct node_info ni; /* in-memory node information */ }; @@ -58,9 +56,15 @@ struct nat_entry { #define nat_set_version(nat, v) (nat->ni.version = v) #define __set_nat_cache_dirty(nm_i, ne) \ - list_move_tail(&ne->list, &nm_i->dirty_nat_entries); + do { \ + ne->checkpointed = false; \ + list_move_tail(&ne->list, &nm_i->dirty_nat_entries); \ + } while (0); #define __clear_nat_cache_dirty(nm_i, ne) \ - list_move_tail(&ne->list, &nm_i->nat_entries); + do { \ + ne->checkpointed = true; \ + list_move_tail(&ne->list, &nm_i->nat_entries); \ + } while (0); #define inc_node_version(version) (++version) static inline void node_info_from_raw_nat(struct node_info *ni, @@ -71,6 +75,11 @@ static inline void node_info_from_raw_nat(struct node_info *ni, ni->version = raw_ne->version; } +enum nid_type { + FREE_NIDS, /* indicates the free nid list */ + NAT_ENTRIES /* indicates the cached nat entry */ +}; + /* * For free nid mangement */ @@ -224,13 +233,19 @@ static inline block_t next_blkaddr_of_node(struct page *node_page) * | `- direct node (5 + N => 5 + 2N - 1) * `- double indirect node (5 + 2N) * `- indirect node (6 + 2N) - * `- direct node (x(N + 1)) + * `- direct node + * ...... + * `- indirect node ((6 + 2N) + x(N + 1)) + * `- direct node + * ...... + * `- indirect node ((6 + 2N) + (N - 1)(N + 1)) + * `- direct node */ static inline bool IS_DNODE(struct page *node_page) { unsigned int ofs = ofs_of_node(node_page); - if (ofs == XATTR_NODE_OFFSET) + if (f2fs_has_xattr_block(ofs)) return false; if (ofs == 3 || ofs == 4 + NIDS_PER_BLOCK || diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c index fdc81161f254..b1ae89f0f44e 100644 --- a/fs/f2fs/recovery.c +++ b/fs/f2fs/recovery.c @@ -27,21 +27,18 @@ bool space_for_roll_forward(struct f2fs_sb_info *sbi) static struct fsync_inode_entry *get_fsync_inode(struct list_head *head, nid_t ino) { - struct list_head *this; struct fsync_inode_entry *entry; - list_for_each(this, head) { - entry = list_entry(this, struct fsync_inode_entry, list); + list_for_each_entry(entry, head, list) if (entry->inode->i_ino == ino) return entry; - } + return NULL; } static int recover_dentry(struct page *ipage, struct inode *inode) { - struct f2fs_node *raw_node = F2FS_NODE(ipage); - struct f2fs_inode *raw_inode = &(raw_node->i); + struct f2fs_inode *raw_inode = F2FS_INODE(ipage); nid_t pino = le32_to_cpu(raw_inode->i_pino); struct f2fs_dir_entry *de; struct qstr name; @@ -62,6 +59,12 @@ static int recover_dentry(struct page *ipage, struct inode *inode) name.len = le32_to_cpu(raw_inode->i_namelen); name.name = raw_inode->i_name; + + if (unlikely(name.len > F2FS_NAME_LEN)) { + WARN_ON(1); + err = -ENAMETOOLONG; + goto out; + } retry: de = f2fs_find_entry(dir, &name, &page); if (de && inode->i_ino == le32_to_cpu(de->ino)) @@ -90,17 +93,16 @@ out_unmap_put: kunmap(page); f2fs_put_page(page, 0); out: - f2fs_msg(inode->i_sb, KERN_NOTICE, "recover_inode and its dentry: " - "ino = %x, name = %s, dir = %lx, err = %d", - ino_of_node(ipage), raw_inode->i_name, + f2fs_msg(inode->i_sb, KERN_NOTICE, + "%s: ino = %x, name = %s, dir = %lx, err = %d", + __func__, ino_of_node(ipage), raw_inode->i_name, IS_ERR(dir) ? 0 : dir->i_ino, err); return err; } static int recover_inode(struct inode *inode, struct page *node_page) { - struct f2fs_node *raw_node = F2FS_NODE(node_page); - struct f2fs_inode *raw_inode = &(raw_node->i); + struct f2fs_inode *raw_inode = F2FS_INODE(node_page); if (!IS_INODE(node_page)) return 0; @@ -132,7 +134,7 @@ static int find_fsync_dnodes(struct f2fs_sb_info *sbi, struct list_head *head) /* get node pages in the current segment */ curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); - blkaddr = START_BLOCK(sbi, curseg->segno) + curseg->next_blkoff; + blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); /* read node page */ page = alloc_page(GFP_F2FS_ZERO); @@ -143,9 +145,9 @@ static int find_fsync_dnodes(struct f2fs_sb_info *sbi, struct list_head *head) while (1) { struct fsync_inode_entry *entry; - err = f2fs_readpage(sbi, page, blkaddr, READ_SYNC); + err = f2fs_submit_page_bio(sbi, page, blkaddr, READ_SYNC); if (err) - goto out; + return err; lock_page(page); @@ -191,9 +193,10 @@ next: /* check next segment */ blkaddr = next_blkaddr_of_node(page); } + unlock_page(page); -out: __free_pages(page, 0); + return err; } @@ -213,13 +216,12 @@ static int check_index_in_prev_nodes(struct f2fs_sb_info *sbi, { struct seg_entry *sentry; unsigned int segno = GET_SEGNO(sbi, blkaddr); - unsigned short blkoff = GET_SEGOFF_FROM_SEG0(sbi, blkaddr) & - (sbi->blocks_per_seg - 1); + unsigned short blkoff = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); + struct f2fs_summary_block *sum_node; struct f2fs_summary sum; + struct page *sum_page, *node_page; nid_t ino, nid; - void *kaddr; struct inode *inode; - struct page *node_page; unsigned int offset; block_t bidx; int i; @@ -233,18 +235,15 @@ static int check_index_in_prev_nodes(struct f2fs_sb_info *sbi, struct curseg_info *curseg = CURSEG_I(sbi, i); if (curseg->segno == segno) { sum = curseg->sum_blk->entries[blkoff]; - break; + goto got_it; } } - if (i > CURSEG_COLD_DATA) { - struct page *sum_page = get_sum_page(sbi, segno); - struct f2fs_summary_block *sum_node; - kaddr = page_address(sum_page); - sum_node = (struct f2fs_summary_block *)kaddr; - sum = sum_node->entries[blkoff]; - f2fs_put_page(sum_page, 1); - } + sum_page = get_sum_page(sbi, segno); + sum_node = (struct f2fs_summary_block *)page_address(sum_page); + sum = sum_node->entries[blkoff]; + f2fs_put_page(sum_page, 1); +got_it: /* Use the locked dnode page and inode */ nid = le32_to_cpu(sum.nid); if (dn->inode->i_ino == nid) { @@ -293,6 +292,12 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode, struct node_info ni; int err = 0, recovered = 0; + if (recover_inline_data(inode, page)) + goto out; + + if (recover_xattr_data(inode, page, blkaddr)) + goto out; + start = start_bidx_of_node(ofs_of_node(page), fi); if (IS_INODE(page)) end = start + ADDRS_PER_INODE(fi); @@ -300,15 +305,16 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode, end = start + ADDRS_PER_BLOCK; f2fs_lock_op(sbi); + set_new_dnode(&dn, inode, NULL, NULL, 0); err = get_dnode_of_data(&dn, start, ALLOC_NODE); if (err) { f2fs_unlock_op(sbi); - return err; + goto out; } - wait_on_page_writeback(dn.node_page); + f2fs_wait_on_page_writeback(dn.node_page, NODE); get_node_info(sbi, dn.nid, &ni); f2fs_bug_on(ni.ino != ino_of_node(page)); @@ -356,10 +362,10 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode, err: f2fs_put_dnode(&dn); f2fs_unlock_op(sbi); - - f2fs_msg(sbi->sb, KERN_NOTICE, "recover_data: ino = %lx, " - "recovered_data = %d blocks, err = %d", - inode->i_ino, recovered, err); +out: + f2fs_msg(sbi->sb, KERN_NOTICE, + "recover_data: ino = %lx, recovered = %d blocks, err = %d", + inode->i_ino, recovered, err); return err; } @@ -377,7 +383,7 @@ static int recover_data(struct f2fs_sb_info *sbi, blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); /* read node page */ - page = alloc_page(GFP_NOFS | __GFP_ZERO); + page = alloc_page(GFP_F2FS_ZERO); if (!page) return -ENOMEM; @@ -386,9 +392,9 @@ static int recover_data(struct f2fs_sb_info *sbi, while (1) { struct fsync_inode_entry *entry; - err = f2fs_readpage(sbi, page, blkaddr, READ_SYNC); + err = f2fs_submit_page_bio(sbi, page, blkaddr, READ_SYNC); if (err) - goto out; + return err; lock_page(page); @@ -412,8 +418,8 @@ next: /* check next segment */ blkaddr = next_blkaddr_of_node(page); } + unlock_page(page); -out: __free_pages(page, 0); if (!err) @@ -428,8 +434,8 @@ int recover_fsync_data(struct f2fs_sb_info *sbi) bool need_writecp = false; fsync_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_inode_entry", - sizeof(struct fsync_inode_entry), NULL); - if (unlikely(!fsync_entry_slab)) + sizeof(struct fsync_inode_entry)); + if (!fsync_entry_slab) return -ENOMEM; INIT_LIST_HEAD(&inode_list); diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index fa284d397199..085f548be7a3 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -13,13 +13,166 @@ #include <linux/bio.h> #include <linux/blkdev.h> #include <linux/prefetch.h> +#include <linux/kthread.h> #include <linux/vmalloc.h> +#include <linux/swap.h> #include "f2fs.h" #include "segment.h" #include "node.h" #include <trace/events/f2fs.h> +#define __reverse_ffz(x) __reverse_ffs(~(x)) + +static struct kmem_cache *discard_entry_slab; +static struct kmem_cache *flush_cmd_slab; + +/* + * __reverse_ffs is copied from include/asm-generic/bitops/__ffs.h since + * MSB and LSB are reversed in a byte by f2fs_set_bit. + */ +static inline unsigned long __reverse_ffs(unsigned long word) +{ + int num = 0; + +#if BITS_PER_LONG == 64 + if ((word & 0xffffffff) == 0) { + num += 32; + word >>= 32; + } +#endif + if ((word & 0xffff) == 0) { + num += 16; + word >>= 16; + } + if ((word & 0xff) == 0) { + num += 8; + word >>= 8; + } + if ((word & 0xf0) == 0) + num += 4; + else + word >>= 4; + if ((word & 0xc) == 0) + num += 2; + else + word >>= 2; + if ((word & 0x2) == 0) + num += 1; + return num; +} + +/* + * __find_rev_next(_zero)_bit is copied from lib/find_next_bit.c becasue + * f2fs_set_bit makes MSB and LSB reversed in a byte. + * Example: + * LSB <--> MSB + * f2fs_set_bit(0, bitmap) => 0000 0001 + * f2fs_set_bit(7, bitmap) => 1000 0000 + */ +static unsigned long __find_rev_next_bit(const unsigned long *addr, + unsigned long size, unsigned long offset) +{ + const unsigned long *p = addr + BIT_WORD(offset); + unsigned long result = offset & ~(BITS_PER_LONG - 1); + unsigned long tmp; + unsigned long mask, submask; + unsigned long quot, rest; + + if (offset >= size) + return size; + + size -= result; + offset %= BITS_PER_LONG; + if (!offset) + goto aligned; + + tmp = *(p++); + quot = (offset >> 3) << 3; + rest = offset & 0x7; + mask = ~0UL << quot; + submask = (unsigned char)(0xff << rest) >> rest; + submask <<= quot; + mask &= submask; + tmp &= mask; + if (size < BITS_PER_LONG) + goto found_first; + if (tmp) + goto found_middle; + + size -= BITS_PER_LONG; + result += BITS_PER_LONG; +aligned: + while (size & ~(BITS_PER_LONG-1)) { + tmp = *(p++); + if (tmp) + goto found_middle; + result += BITS_PER_LONG; + size -= BITS_PER_LONG; + } + if (!size) + return result; + tmp = *p; +found_first: + tmp &= (~0UL >> (BITS_PER_LONG - size)); + if (tmp == 0UL) /* Are any bits set? */ + return result + size; /* Nope. */ +found_middle: + return result + __reverse_ffs(tmp); +} + +static unsigned long __find_rev_next_zero_bit(const unsigned long *addr, + unsigned long size, unsigned long offset) +{ + const unsigned long *p = addr + BIT_WORD(offset); + unsigned long result = offset & ~(BITS_PER_LONG - 1); + unsigned long tmp; + unsigned long mask, submask; + unsigned long quot, rest; + + if (offset >= size) + return size; + + size -= result; + offset %= BITS_PER_LONG; + if (!offset) + goto aligned; + + tmp = *(p++); + quot = (offset >> 3) << 3; + rest = offset & 0x7; + mask = ~(~0UL << quot); + submask = (unsigned char)~((unsigned char)(0xff << rest) >> rest); + submask <<= quot; + mask += submask; + tmp |= mask; + if (size < BITS_PER_LONG) + goto found_first; + if (~tmp) + goto found_middle; + + size -= BITS_PER_LONG; + result += BITS_PER_LONG; +aligned: + while (size & ~(BITS_PER_LONG - 1)) { + tmp = *(p++); + if (~tmp) + goto found_middle; + result += BITS_PER_LONG; + size -= BITS_PER_LONG; + } + if (!size) + return result; + tmp = *p; + +found_first: + tmp |= ~0UL << size; + if (tmp == ~0UL) /* Are any bits zero? */ + return result + size; /* Nope. */ +found_middle: + return result + __reverse_ffz(tmp); +} + /* * This function balances dirty node and dentry pages. * In addition, it controls garbage collection. @@ -44,6 +197,73 @@ void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi) f2fs_sync_fs(sbi->sb, true); } +static int issue_flush_thread(void *data) +{ + struct f2fs_sb_info *sbi = data; + struct f2fs_sm_info *sm_i = SM_I(sbi); + wait_queue_head_t *q = &sm_i->flush_wait_queue; +repeat: + if (kthread_should_stop()) + return 0; + + spin_lock(&sm_i->issue_lock); + if (sm_i->issue_list) { + sm_i->dispatch_list = sm_i->issue_list; + sm_i->issue_list = sm_i->issue_tail = NULL; + } + spin_unlock(&sm_i->issue_lock); + + if (sm_i->dispatch_list) { + struct bio *bio = bio_alloc(GFP_NOIO, 0); + struct flush_cmd *cmd, *next; + int ret; + + bio->bi_bdev = sbi->sb->s_bdev; + ret = submit_bio_wait(WRITE_FLUSH, bio); + + for (cmd = sm_i->dispatch_list; cmd; cmd = next) { + cmd->ret = ret; + next = cmd->next; + complete(&cmd->wait); + } + sm_i->dispatch_list = NULL; + } + + wait_event_interruptible(*q, kthread_should_stop() || sm_i->issue_list); + goto repeat; +} + +int f2fs_issue_flush(struct f2fs_sb_info *sbi) +{ + struct f2fs_sm_info *sm_i = SM_I(sbi); + struct flush_cmd *cmd; + int ret; + + if (!test_opt(sbi, FLUSH_MERGE)) + return blkdev_issue_flush(sbi->sb->s_bdev, GFP_KERNEL, NULL); + + cmd = f2fs_kmem_cache_alloc(flush_cmd_slab, GFP_ATOMIC); + cmd->next = NULL; + cmd->ret = 0; + init_completion(&cmd->wait); + + spin_lock(&sm_i->issue_lock); + if (sm_i->issue_list) + sm_i->issue_tail->next = cmd; + else + sm_i->issue_list = cmd; + sm_i->issue_tail = cmd; + spin_unlock(&sm_i->issue_lock); + + if (!sm_i->dispatch_list) + wake_up(&sm_i->flush_wait_queue); + + wait_for_completion(&cmd->wait); + ret = cmd->ret; + kmem_cache_free(flush_cmd_slab, cmd); + return ret; +} + static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, enum dirty_type dirty_type) { @@ -116,6 +336,56 @@ static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno) mutex_unlock(&dirty_i->seglist_lock); } +static void f2fs_issue_discard(struct f2fs_sb_info *sbi, + block_t blkstart, block_t blklen) +{ + sector_t start = SECTOR_FROM_BLOCK(sbi, blkstart); + sector_t len = SECTOR_FROM_BLOCK(sbi, blklen); + blkdev_issue_discard(sbi->sb->s_bdev, start, len, GFP_NOFS, 0); + trace_f2fs_issue_discard(sbi->sb, blkstart, blklen); +} + +static void add_discard_addrs(struct f2fs_sb_info *sbi, + unsigned int segno, struct seg_entry *se) +{ + struct list_head *head = &SM_I(sbi)->discard_list; + struct discard_entry *new; + int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); + int max_blocks = sbi->blocks_per_seg; + unsigned long *cur_map = (unsigned long *)se->cur_valid_map; + unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; + unsigned long dmap[entries]; + unsigned int start = 0, end = -1; + int i; + + if (!test_opt(sbi, DISCARD)) + return; + + /* zero block will be discarded through the prefree list */ + if (!se->valid_blocks || se->valid_blocks == max_blocks) + return; + + /* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */ + for (i = 0; i < entries; i++) + dmap[i] = (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i]; + + while (SM_I(sbi)->nr_discards <= SM_I(sbi)->max_discards) { + start = __find_rev_next_bit(dmap, max_blocks, end + 1); + if (start >= max_blocks) + break; + + end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1); + + new = f2fs_kmem_cache_alloc(discard_entry_slab, GFP_NOFS); + INIT_LIST_HEAD(&new->list); + new->blkaddr = START_BLOCK(sbi, segno) + start; + new->len = end - start; + + list_add_tail(&new->list, head); + SM_I(sbi)->nr_discards += end - start; + } +} + /* * Should call clear_prefree_segments after checkpoint is done. */ @@ -138,6 +408,8 @@ static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi) void clear_prefree_segments(struct f2fs_sb_info *sbi) { + struct list_head *head = &(SM_I(sbi)->discard_list); + struct discard_entry *entry, *this; struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); unsigned long *prefree_map = dirty_i->dirty_segmap[PRE]; unsigned int total_segs = TOTAL_SEGS(sbi); @@ -160,14 +432,18 @@ void clear_prefree_segments(struct f2fs_sb_info *sbi) if (!test_opt(sbi, DISCARD)) continue; - blkdev_issue_discard(sbi->sb->s_bdev, - START_BLOCK(sbi, start) << - sbi->log_sectors_per_block, - (1 << (sbi->log_sectors_per_block + - sbi->log_blocks_per_seg)) * (end - start), - GFP_NOFS, 0); + f2fs_issue_discard(sbi, START_BLOCK(sbi, start), + (end - start) << sbi->log_blocks_per_seg); } mutex_unlock(&dirty_i->seglist_lock); + + /* send small discards */ + list_for_each_entry_safe(entry, this, head, list) { + f2fs_issue_discard(sbi, entry->blkaddr, entry->len); + list_del(&entry->list); + SM_I(sbi)->nr_discards -= entry->len; + kmem_cache_free(discard_entry_slab, entry); + } } static void __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno) @@ -196,7 +472,7 @@ static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del) se = get_seg_entry(sbi, segno); new_vblocks = se->valid_blocks + del; - offset = GET_SEGOFF_FROM_SEG0(sbi, blkaddr) & (sbi->blocks_per_seg - 1); + offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); f2fs_bug_on((new_vblocks >> (sizeof(unsigned short) << 3) || (new_vblocks > sbi->blocks_per_seg))); @@ -225,12 +501,14 @@ static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del) get_sec_entry(sbi, segno)->valid_blocks += del; } -static void refresh_sit_entry(struct f2fs_sb_info *sbi, - block_t old_blkaddr, block_t new_blkaddr) +void refresh_sit_entry(struct f2fs_sb_info *sbi, block_t old, block_t new) { - update_sit_entry(sbi, new_blkaddr, 1); - if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) - update_sit_entry(sbi, old_blkaddr, -1); + update_sit_entry(sbi, new, 1); + if (GET_SEGNO(sbi, old) != NULL_SEGNO) + update_sit_entry(sbi, old, -1); + + locate_dirty_segment(sbi, GET_SEGNO(sbi, old)); + locate_dirty_segment(sbi, GET_SEGNO(sbi, new)); } void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr) @@ -459,13 +737,18 @@ static void __next_free_blkoff(struct f2fs_sb_info *sbi, struct curseg_info *seg, block_t start) { struct seg_entry *se = get_seg_entry(sbi, seg->segno); - block_t ofs; - for (ofs = start; ofs < sbi->blocks_per_seg; ofs++) { - if (!f2fs_test_bit(ofs, se->ckpt_valid_map) - && !f2fs_test_bit(ofs, se->cur_valid_map)) - break; - } - seg->next_blkoff = ofs; + int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); + unsigned long target_map[entries]; + unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; + unsigned long *cur_map = (unsigned long *)se->cur_valid_map; + int i, pos; + + for (i = 0; i < entries; i++) + target_map[i] = ckpt_map[i] | cur_map[i]; + + pos = __find_rev_next_zero_bit(target_map, sbi->blocks_per_seg, start); + + seg->next_blkoff = pos; } /* @@ -573,148 +856,6 @@ static const struct segment_allocation default_salloc_ops = { .allocate_segment = allocate_segment_by_default, }; -static void f2fs_end_io_write(struct bio *bio, int err) -{ - const int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); - struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1; - struct bio_private *p = bio->bi_private; - - do { - struct page *page = bvec->bv_page; - - if (--bvec >= bio->bi_io_vec) - prefetchw(&bvec->bv_page->flags); - if (!uptodate) { - SetPageError(page); - if (page->mapping) - set_bit(AS_EIO, &page->mapping->flags); - set_ckpt_flags(p->sbi->ckpt, CP_ERROR_FLAG); - p->sbi->sb->s_flags |= MS_RDONLY; - } - end_page_writeback(page); - dec_page_count(p->sbi, F2FS_WRITEBACK); - } while (bvec >= bio->bi_io_vec); - - if (p->is_sync) - complete(p->wait); - - if (!get_pages(p->sbi, F2FS_WRITEBACK) && - !list_empty(&p->sbi->cp_wait.task_list)) - wake_up(&p->sbi->cp_wait); - - kfree(p); - bio_put(bio); -} - -struct bio *f2fs_bio_alloc(struct block_device *bdev, int npages) -{ - struct bio *bio; - - /* No failure on bio allocation */ - bio = bio_alloc(GFP_NOIO, npages); - bio->bi_bdev = bdev; - bio->bi_private = NULL; - - return bio; -} - -static void do_submit_bio(struct f2fs_sb_info *sbi, - enum page_type type, bool sync) -{ - int rw = sync ? WRITE_SYNC : WRITE; - enum page_type btype = type > META ? META : type; - - if (type >= META_FLUSH) - rw = WRITE_FLUSH_FUA; - - if (btype == META) - rw |= REQ_META; - - if (sbi->bio[btype]) { - struct bio_private *p = sbi->bio[btype]->bi_private; - p->sbi = sbi; - sbi->bio[btype]->bi_end_io = f2fs_end_io_write; - - trace_f2fs_do_submit_bio(sbi->sb, btype, sync, sbi->bio[btype]); - - if (type == META_FLUSH) { - DECLARE_COMPLETION_ONSTACK(wait); - p->is_sync = true; - p->wait = &wait; - submit_bio(rw, sbi->bio[btype]); - wait_for_completion(&wait); - } else { - p->is_sync = false; - submit_bio(rw, sbi->bio[btype]); - } - sbi->bio[btype] = NULL; - } -} - -void f2fs_submit_bio(struct f2fs_sb_info *sbi, enum page_type type, bool sync) -{ - down_write(&sbi->bio_sem); - do_submit_bio(sbi, type, sync); - up_write(&sbi->bio_sem); -} - -static void submit_write_page(struct f2fs_sb_info *sbi, struct page *page, - block_t blk_addr, enum page_type type) -{ - struct block_device *bdev = sbi->sb->s_bdev; - int bio_blocks; - - verify_block_addr(sbi, blk_addr); - - down_write(&sbi->bio_sem); - - inc_page_count(sbi, F2FS_WRITEBACK); - - if (sbi->bio[type] && sbi->last_block_in_bio[type] != blk_addr - 1) - do_submit_bio(sbi, type, false); -alloc_new: - if (sbi->bio[type] == NULL) { - struct bio_private *priv; -retry: - priv = kmalloc(sizeof(struct bio_private), GFP_NOFS); - if (!priv) { - cond_resched(); - goto retry; - } - - bio_blocks = MAX_BIO_BLOCKS(max_hw_blocks(sbi)); - sbi->bio[type] = f2fs_bio_alloc(bdev, bio_blocks); - sbi->bio[type]->bi_sector = SECTOR_FROM_BLOCK(sbi, blk_addr); - sbi->bio[type]->bi_private = priv; - /* - * The end_io will be assigned at the sumbission phase. - * Until then, let bio_add_page() merge consecutive IOs as much - * as possible. - */ - } - - if (bio_add_page(sbi->bio[type], page, PAGE_CACHE_SIZE, 0) < - PAGE_CACHE_SIZE) { - do_submit_bio(sbi, type, false); - goto alloc_new; - } - - sbi->last_block_in_bio[type] = blk_addr; - - up_write(&sbi->bio_sem); - trace_f2fs_submit_write_page(page, blk_addr, type); -} - -void f2fs_wait_on_page_writeback(struct page *page, - enum page_type type, bool sync) -{ - struct f2fs_sb_info *sbi = F2FS_SB(page->mapping->host->i_sb); - if (PageWriteback(page)) { - f2fs_submit_bio(sbi, type, sync); - wait_on_page_writeback(page); - } -} - static bool __has_curseg_space(struct f2fs_sb_info *sbi, int type) { struct curseg_info *curseg = CURSEG_I(sbi, type); @@ -782,16 +923,14 @@ static int __get_segment_type(struct page *page, enum page_type p_type) return __get_segment_type_6(page, p_type); } -static void do_write_page(struct f2fs_sb_info *sbi, struct page *page, - block_t old_blkaddr, block_t *new_blkaddr, - struct f2fs_summary *sum, enum page_type p_type) +void allocate_data_block(struct f2fs_sb_info *sbi, struct page *page, + block_t old_blkaddr, block_t *new_blkaddr, + struct f2fs_summary *sum, int type) { struct sit_info *sit_i = SIT_I(sbi); struct curseg_info *curseg; unsigned int old_cursegno; - int type; - type = __get_segment_type(page, p_type); curseg = CURSEG_I(sbi, type); mutex_lock(&curseg->curseg_mutex); @@ -811,62 +950,75 @@ static void do_write_page(struct f2fs_sb_info *sbi, struct page *page, stat_inc_block_count(sbi, curseg); + if (!__has_curseg_space(sbi, type)) + sit_i->s_ops->allocate_segment(sbi, type, false); /* * SIT information should be updated before segment allocation, * since SSR needs latest valid block information. */ refresh_sit_entry(sbi, old_blkaddr, *new_blkaddr); - - if (!__has_curseg_space(sbi, type)) - sit_i->s_ops->allocate_segment(sbi, type, false); - locate_dirty_segment(sbi, old_cursegno); - locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr)); + mutex_unlock(&sit_i->sentry_lock); - if (p_type == NODE) + if (page && IS_NODESEG(type)) fill_node_footer_blkaddr(page, NEXT_FREE_BLKADDR(sbi, curseg)); - /* writeout dirty page into bdev */ - submit_write_page(sbi, page, *new_blkaddr, p_type); - mutex_unlock(&curseg->curseg_mutex); } +static void do_write_page(struct f2fs_sb_info *sbi, struct page *page, + block_t old_blkaddr, block_t *new_blkaddr, + struct f2fs_summary *sum, struct f2fs_io_info *fio) +{ + int type = __get_segment_type(page, fio->type); + + allocate_data_block(sbi, page, old_blkaddr, new_blkaddr, sum, type); + + /* writeout dirty page into bdev */ + f2fs_submit_page_mbio(sbi, page, *new_blkaddr, fio); +} + void write_meta_page(struct f2fs_sb_info *sbi, struct page *page) { + struct f2fs_io_info fio = { + .type = META, + .rw = WRITE_SYNC | REQ_META | REQ_PRIO + }; + set_page_writeback(page); - submit_write_page(sbi, page, page->index, META); + f2fs_submit_page_mbio(sbi, page, page->index, &fio); } void write_node_page(struct f2fs_sb_info *sbi, struct page *page, + struct f2fs_io_info *fio, unsigned int nid, block_t old_blkaddr, block_t *new_blkaddr) { struct f2fs_summary sum; set_summary(&sum, nid, 0, 0); - do_write_page(sbi, page, old_blkaddr, new_blkaddr, &sum, NODE); + do_write_page(sbi, page, old_blkaddr, new_blkaddr, &sum, fio); } -void write_data_page(struct inode *inode, struct page *page, - struct dnode_of_data *dn, block_t old_blkaddr, - block_t *new_blkaddr) +void write_data_page(struct page *page, struct dnode_of_data *dn, + block_t *new_blkaddr, struct f2fs_io_info *fio) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_SB(dn->inode->i_sb); struct f2fs_summary sum; struct node_info ni; - f2fs_bug_on(old_blkaddr == NULL_ADDR); + f2fs_bug_on(dn->data_blkaddr == NULL_ADDR); get_node_info(sbi, dn->nid, &ni); set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); - do_write_page(sbi, page, old_blkaddr, - new_blkaddr, &sum, DATA); + do_write_page(sbi, page, dn->data_blkaddr, new_blkaddr, &sum, fio); } -void rewrite_data_page(struct f2fs_sb_info *sbi, struct page *page, - block_t old_blk_addr) +void rewrite_data_page(struct page *page, block_t old_blkaddr, + struct f2fs_io_info *fio) { - submit_write_page(sbi, page, old_blk_addr, DATA); + struct inode *inode = page->mapping->host; + struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + f2fs_submit_page_mbio(sbi, page, old_blkaddr, fio); } void recover_data_page(struct f2fs_sb_info *sbi, @@ -902,14 +1054,11 @@ void recover_data_page(struct f2fs_sb_info *sbi, change_curseg(sbi, type, true); } - curseg->next_blkoff = GET_SEGOFF_FROM_SEG0(sbi, new_blkaddr) & - (sbi->blocks_per_seg - 1); + curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr); __add_sum_entry(sbi, type, sum); refresh_sit_entry(sbi, old_blkaddr, new_blkaddr); - locate_dirty_segment(sbi, old_cursegno); - locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr)); mutex_unlock(&sit_i->sentry_lock); mutex_unlock(&curseg->curseg_mutex); @@ -925,6 +1074,10 @@ void rewrite_node_page(struct f2fs_sb_info *sbi, unsigned int segno, old_cursegno; block_t next_blkaddr = next_blkaddr_of_node(page); unsigned int next_segno = GET_SEGNO(sbi, next_blkaddr); + struct f2fs_io_info fio = { + .type = NODE, + .rw = WRITE_SYNC, + }; curseg = CURSEG_I(sbi, type); @@ -939,8 +1092,7 @@ void rewrite_node_page(struct f2fs_sb_info *sbi, curseg->next_segno = segno; change_curseg(sbi, type, true); } - curseg->next_blkoff = GET_SEGOFF_FROM_SEG0(sbi, new_blkaddr) & - (sbi->blocks_per_seg - 1); + curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr); __add_sum_entry(sbi, type, sum); /* change the current log to the next block addr in advance */ @@ -948,22 +1100,54 @@ void rewrite_node_page(struct f2fs_sb_info *sbi, curseg->next_segno = next_segno; change_curseg(sbi, type, true); } - curseg->next_blkoff = GET_SEGOFF_FROM_SEG0(sbi, next_blkaddr) & - (sbi->blocks_per_seg - 1); + curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, next_blkaddr); /* rewrite node page */ set_page_writeback(page); - submit_write_page(sbi, page, new_blkaddr, NODE); - f2fs_submit_bio(sbi, NODE, true); + f2fs_submit_page_mbio(sbi, page, new_blkaddr, &fio); + f2fs_submit_merged_bio(sbi, NODE, WRITE); refresh_sit_entry(sbi, old_blkaddr, new_blkaddr); - locate_dirty_segment(sbi, old_cursegno); - locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr)); mutex_unlock(&sit_i->sentry_lock); mutex_unlock(&curseg->curseg_mutex); } +static inline bool is_merged_page(struct f2fs_sb_info *sbi, + struct page *page, enum page_type type) +{ + enum page_type btype = PAGE_TYPE_OF_BIO(type); + struct f2fs_bio_info *io = &sbi->write_io[btype]; + struct bio_vec *bvec; + int i; + + down_read(&io->io_rwsem); + if (!io->bio) + goto out; + + bio_for_each_segment_all(bvec, io->bio, i) { + if (page == bvec->bv_page) { + up_read(&io->io_rwsem); + return true; + } + } + +out: + up_read(&io->io_rwsem); + return false; +} + +void f2fs_wait_on_page_writeback(struct page *page, + enum page_type type) +{ + struct f2fs_sb_info *sbi = F2FS_SB(page->mapping->host->i_sb); + if (PageWriteback(page)) { + if (is_merged_page(sbi, page, type)) + f2fs_submit_merged_bio(sbi, type, WRITE); + wait_on_page_writeback(page); + } +} + static int read_compacted_summaries(struct f2fs_sb_info *sbi) { struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); @@ -1068,9 +1252,12 @@ static int read_normal_summaries(struct f2fs_sb_info *sbi, int type) ns->ofs_in_node = 0; } } else { - if (restore_node_summary(sbi, segno, sum)) { + int err; + + err = restore_node_summary(sbi, segno, sum); + if (err) { f2fs_put_page(new, 1); - return -EINVAL; + return err; } } } @@ -1091,6 +1278,7 @@ static int read_normal_summaries(struct f2fs_sb_info *sbi, int type) static int restore_curseg_summaries(struct f2fs_sb_info *sbi) { int type = CURSEG_HOT_DATA; + int err; if (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_COMPACT_SUM_FLAG)) { /* restore for compacted data summary */ @@ -1099,9 +1287,12 @@ static int restore_curseg_summaries(struct f2fs_sb_info *sbi) type = CURSEG_HOT_NODE; } - for (; type <= CURSEG_COLD_NODE; type++) - if (read_normal_summaries(sbi, type)) - return -EINVAL; + for (; type <= CURSEG_COLD_NODE; type++) { + err = read_normal_summaries(sbi, type); + if (err) + return err; + } + return 0; } @@ -1314,6 +1505,10 @@ void flush_sit_entries(struct f2fs_sb_info *sbi) sit_offset = SIT_ENTRY_OFFSET(sit_i, segno); + /* add discard candidates */ + if (SM_I(sbi)->nr_discards < SM_I(sbi)->max_discards) + add_discard_addrs(sbi, segno, se); + if (flushed) goto to_sit_page; @@ -1485,36 +1680,48 @@ static void build_sit_entries(struct f2fs_sb_info *sbi) struct sit_info *sit_i = SIT_I(sbi); struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); struct f2fs_summary_block *sum = curseg->sum_blk; - unsigned int start; - - for (start = 0; start < TOTAL_SEGS(sbi); start++) { - struct seg_entry *se = &sit_i->sentries[start]; - struct f2fs_sit_block *sit_blk; - struct f2fs_sit_entry sit; - struct page *page; - int i; + int sit_blk_cnt = SIT_BLK_CNT(sbi); + unsigned int i, start, end; + unsigned int readed, start_blk = 0; + int nrpages = MAX_BIO_BLOCKS(max_hw_blocks(sbi)); - mutex_lock(&curseg->curseg_mutex); - for (i = 0; i < sits_in_cursum(sum); i++) { - if (le32_to_cpu(segno_in_journal(sum, i)) == start) { - sit = sit_in_journal(sum, i); - mutex_unlock(&curseg->curseg_mutex); - goto got_it; + do { + readed = ra_meta_pages(sbi, start_blk, nrpages, META_SIT); + + start = start_blk * sit_i->sents_per_block; + end = (start_blk + readed) * sit_i->sents_per_block; + + for (; start < end && start < TOTAL_SEGS(sbi); start++) { + struct seg_entry *se = &sit_i->sentries[start]; + struct f2fs_sit_block *sit_blk; + struct f2fs_sit_entry sit; + struct page *page; + + mutex_lock(&curseg->curseg_mutex); + for (i = 0; i < sits_in_cursum(sum); i++) { + if (le32_to_cpu(segno_in_journal(sum, i)) + == start) { + sit = sit_in_journal(sum, i); + mutex_unlock(&curseg->curseg_mutex); + goto got_it; + } } - } - mutex_unlock(&curseg->curseg_mutex); - page = get_current_sit_page(sbi, start); - sit_blk = (struct f2fs_sit_block *)page_address(page); - sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)]; - f2fs_put_page(page, 1); + mutex_unlock(&curseg->curseg_mutex); + + page = get_current_sit_page(sbi, start); + sit_blk = (struct f2fs_sit_block *)page_address(page); + sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)]; + f2fs_put_page(page, 1); got_it: - check_block_count(sbi, start, &sit); - seg_info_from_raw_sit(se, &sit); - if (sbi->segs_per_sec > 1) { - struct sec_entry *e = get_sec_entry(sbi, start); - e->valid_blocks += se->valid_blocks; + check_block_count(sbi, start, &sit); + seg_info_from_raw_sit(se, &sit); + if (sbi->segs_per_sec > 1) { + struct sec_entry *e = get_sec_entry(sbi, start); + e->valid_blocks += se->valid_blocks; + } } - } + start_blk += readed; + } while (start_blk < sit_blk_cnt); } static void init_free_segmap(struct f2fs_sb_info *sbi) @@ -1625,6 +1832,7 @@ int build_segment_manager(struct f2fs_sb_info *sbi) { struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); + dev_t dev = sbi->sb->s_bdev->bd_dev; struct f2fs_sm_info *sm_info; int err; @@ -1643,7 +1851,24 @@ int build_segment_manager(struct f2fs_sb_info *sbi) sm_info->ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); sm_info->main_segments = le32_to_cpu(raw_super->segment_count_main); sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); - sm_info->rec_prefree_segments = DEF_RECLAIM_PREFREE_SEGMENTS; + sm_info->rec_prefree_segments = sm_info->main_segments * + DEF_RECLAIM_PREFREE_SEGMENTS / 100; + sm_info->ipu_policy = F2FS_IPU_DISABLE; + sm_info->min_ipu_util = DEF_MIN_IPU_UTIL; + + INIT_LIST_HEAD(&sm_info->discard_list); + sm_info->nr_discards = 0; + sm_info->max_discards = 0; + + if (test_opt(sbi, FLUSH_MERGE)) { + spin_lock_init(&sm_info->issue_lock); + init_waitqueue_head(&sm_info->flush_wait_queue); + + sm_info->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi, + "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev)); + if (IS_ERR(sm_info->f2fs_issue_flush)) + return PTR_ERR(sm_info->f2fs_issue_flush); + } err = build_sit_info(sbi); if (err) @@ -1753,6 +1978,8 @@ void destroy_segment_manager(struct f2fs_sb_info *sbi) struct f2fs_sm_info *sm_info = SM_I(sbi); if (!sm_info) return; + if (sm_info->f2fs_issue_flush) + kthread_stop(sm_info->f2fs_issue_flush); destroy_dirty_segmap(sbi); destroy_curseg(sbi); destroy_free_segmap(sbi); @@ -1760,3 +1987,24 @@ void destroy_segment_manager(struct f2fs_sb_info *sbi) sbi->sm_info = NULL; kfree(sm_info); } + +int __init create_segment_manager_caches(void) +{ + discard_entry_slab = f2fs_kmem_cache_create("discard_entry", + sizeof(struct discard_entry)); + if (!discard_entry_slab) + return -ENOMEM; + flush_cmd_slab = f2fs_kmem_cache_create("flush_command", + sizeof(struct flush_cmd)); + if (!flush_cmd_slab) { + kmem_cache_destroy(discard_entry_slab); + return -ENOMEM; + } + return 0; +} + +void destroy_segment_manager_caches(void) +{ + kmem_cache_destroy(discard_entry_slab); + kmem_cache_destroy(flush_cmd_slab); +} diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h index 269f690b4e24..7091204680f4 100644 --- a/fs/f2fs/segment.h +++ b/fs/f2fs/segment.h @@ -14,19 +14,14 @@ #define NULL_SEGNO ((unsigned int)(~0)) #define NULL_SECNO ((unsigned int)(~0)) -#define DEF_RECLAIM_PREFREE_SEGMENTS 100 /* 200MB of prefree segments */ +#define DEF_RECLAIM_PREFREE_SEGMENTS 5 /* 5% over total segments */ /* L: Logical segment # in volume, R: Relative segment # in main area */ #define GET_L2R_SEGNO(free_i, segno) (segno - free_i->start_segno) #define GET_R2L_SEGNO(free_i, segno) (segno + free_i->start_segno) -#define IS_DATASEG(t) \ - ((t == CURSEG_HOT_DATA) || (t == CURSEG_COLD_DATA) || \ - (t == CURSEG_WARM_DATA)) - -#define IS_NODESEG(t) \ - ((t == CURSEG_HOT_NODE) || (t == CURSEG_COLD_NODE) || \ - (t == CURSEG_WARM_NODE)) +#define IS_DATASEG(t) (t <= CURSEG_COLD_DATA) +#define IS_NODESEG(t) (t >= CURSEG_HOT_NODE) #define IS_CURSEG(sbi, seg) \ ((seg == CURSEG_I(sbi, CURSEG_HOT_DATA)->segno) || \ @@ -62,6 +57,9 @@ ((blk_addr) - SM_I(sbi)->seg0_blkaddr) #define GET_SEGNO_FROM_SEG0(sbi, blk_addr) \ (GET_SEGOFF_FROM_SEG0(sbi, blk_addr) >> sbi->log_blocks_per_seg) +#define GET_BLKOFF_FROM_SEG0(sbi, blk_addr) \ + (GET_SEGOFF_FROM_SEG0(sbi, blk_addr) & (sbi->blocks_per_seg - 1)) + #define GET_SEGNO(sbi, blk_addr) \ (((blk_addr == NULL_ADDR) || (blk_addr == NEW_ADDR)) ? \ NULL_SEGNO : GET_L2R_SEGNO(FREE_I(sbi), \ @@ -83,25 +81,20 @@ (segno / SIT_ENTRY_PER_BLOCK) #define START_SEGNO(sit_i, segno) \ (SIT_BLOCK_OFFSET(sit_i, segno) * SIT_ENTRY_PER_BLOCK) +#define SIT_BLK_CNT(sbi) \ + ((TOTAL_SEGS(sbi) + SIT_ENTRY_PER_BLOCK - 1) / SIT_ENTRY_PER_BLOCK) #define f2fs_bitmap_size(nr) \ (BITS_TO_LONGS(nr) * sizeof(unsigned long)) #define TOTAL_SEGS(sbi) (SM_I(sbi)->main_segments) #define TOTAL_SECS(sbi) (sbi->total_sections) #define SECTOR_FROM_BLOCK(sbi, blk_addr) \ - (blk_addr << ((sbi)->log_blocksize - F2FS_LOG_SECTOR_SIZE)) + (((sector_t)blk_addr) << (sbi)->log_sectors_per_block) #define SECTOR_TO_BLOCK(sbi, sectors) \ - (sectors >> ((sbi)->log_blocksize - F2FS_LOG_SECTOR_SIZE)) + (sectors >> (sbi)->log_sectors_per_block) #define MAX_BIO_BLOCKS(max_hw_blocks) \ (min((int)max_hw_blocks, BIO_MAX_PAGES)) -/* during checkpoint, bio_private is used to synchronize the last bio */ -struct bio_private { - struct f2fs_sb_info *sbi; - bool is_sync; - void *wait; -}; - /* * indicate a block allocation direction: RIGHT and LEFT. * RIGHT means allocating new sections towards the end of volume. @@ -387,26 +380,12 @@ static inline void get_sit_bitmap(struct f2fs_sb_info *sbi, static inline block_t written_block_count(struct f2fs_sb_info *sbi) { - struct sit_info *sit_i = SIT_I(sbi); - block_t vblocks; - - mutex_lock(&sit_i->sentry_lock); - vblocks = sit_i->written_valid_blocks; - mutex_unlock(&sit_i->sentry_lock); - - return vblocks; + return SIT_I(sbi)->written_valid_blocks; } static inline unsigned int free_segments(struct f2fs_sb_info *sbi) { - struct free_segmap_info *free_i = FREE_I(sbi); - unsigned int free_segs; - - read_lock(&free_i->segmap_lock); - free_segs = free_i->free_segments; - read_unlock(&free_i->segmap_lock); - - return free_segs; + return FREE_I(sbi)->free_segments; } static inline int reserved_segments(struct f2fs_sb_info *sbi) @@ -416,14 +395,7 @@ static inline int reserved_segments(struct f2fs_sb_info *sbi) static inline unsigned int free_sections(struct f2fs_sb_info *sbi) { - struct free_segmap_info *free_i = FREE_I(sbi); - unsigned int free_secs; - - read_lock(&free_i->segmap_lock); - free_secs = free_i->free_sections; - read_unlock(&free_i->segmap_lock); - - return free_secs; + return FREE_I(sbi)->free_sections; } static inline unsigned int prefree_segments(struct f2fs_sb_info *sbi) @@ -458,8 +430,8 @@ static inline int reserved_sections(struct f2fs_sb_info *sbi) static inline bool need_SSR(struct f2fs_sb_info *sbi) { - return ((prefree_segments(sbi) / sbi->segs_per_sec) - + free_sections(sbi) < overprovision_sections(sbi)); + return (prefree_segments(sbi) / sbi->segs_per_sec) + + free_sections(sbi) < overprovision_sections(sbi); } static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi, int freed) @@ -467,38 +439,71 @@ static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi, int freed) int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES); int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS); - if (sbi->por_doing) + if (unlikely(sbi->por_doing)) return false; - return ((free_sections(sbi) + freed) <= (node_secs + 2 * dent_secs + - reserved_sections(sbi))); + return (free_sections(sbi) + freed) <= (node_secs + 2 * dent_secs + + reserved_sections(sbi)); } static inline bool excess_prefree_segs(struct f2fs_sb_info *sbi) { - return (prefree_segments(sbi) > SM_I(sbi)->rec_prefree_segments); + return prefree_segments(sbi) > SM_I(sbi)->rec_prefree_segments; } static inline int utilization(struct f2fs_sb_info *sbi) { - return div_u64((u64)valid_user_blocks(sbi) * 100, sbi->user_block_count); + return div_u64((u64)valid_user_blocks(sbi) * 100, + sbi->user_block_count); } /* * Sometimes f2fs may be better to drop out-of-place update policy. - * So, if fs utilization is over MIN_IPU_UTIL, then f2fs tries to write - * data in the original place likewise other traditional file systems. - * But, currently set 100 in percentage, which means it is disabled. - * See below need_inplace_update(). + * And, users can control the policy through sysfs entries. + * There are five policies with triggering conditions as follows. + * F2FS_IPU_FORCE - all the time, + * F2FS_IPU_SSR - if SSR mode is activated, + * F2FS_IPU_UTIL - if FS utilization is over threashold, + * F2FS_IPU_SSR_UTIL - if SSR mode is activated and FS utilization is over + * threashold, + * F2FS_IPUT_DISABLE - disable IPU. (=default option) */ -#define MIN_IPU_UTIL 100 +#define DEF_MIN_IPU_UTIL 70 + +enum { + F2FS_IPU_FORCE, + F2FS_IPU_SSR, + F2FS_IPU_UTIL, + F2FS_IPU_SSR_UTIL, + F2FS_IPU_DISABLE, +}; + static inline bool need_inplace_update(struct inode *inode) { struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + + /* IPU can be done only for the user data */ if (S_ISDIR(inode->i_mode)) return false; - if (need_SSR(sbi) && utilization(sbi) > MIN_IPU_UTIL) + + switch (SM_I(sbi)->ipu_policy) { + case F2FS_IPU_FORCE: return true; + case F2FS_IPU_SSR: + if (need_SSR(sbi)) + return true; + break; + case F2FS_IPU_UTIL: + if (utilization(sbi) > SM_I(sbi)->min_ipu_util) + return true; + break; + case F2FS_IPU_SSR_UTIL: + if (need_SSR(sbi) && utilization(sbi) > SM_I(sbi)->min_ipu_util) + return true; + break; + case F2FS_IPU_DISABLE: + break; + } return false; } @@ -659,3 +664,46 @@ static inline unsigned int max_hw_blocks(struct f2fs_sb_info *sbi) struct request_queue *q = bdev_get_queue(bdev); return SECTOR_TO_BLOCK(sbi, queue_max_sectors(q)); } + +/* + * It is very important to gather dirty pages and write at once, so that we can + * submit a big bio without interfering other data writes. + * By default, 512 pages for directory data, + * 512 pages (2MB) * 3 for three types of nodes, and + * max_bio_blocks for meta are set. + */ +static inline int nr_pages_to_skip(struct f2fs_sb_info *sbi, int type) +{ + if (type == DATA) + return sbi->blocks_per_seg; + else if (type == NODE) + return 3 * sbi->blocks_per_seg; + else if (type == META) + return MAX_BIO_BLOCKS(max_hw_blocks(sbi)); + else + return 0; +} + +/* + * When writing pages, it'd better align nr_to_write for segment size. + */ +static inline long nr_pages_to_write(struct f2fs_sb_info *sbi, int type, + struct writeback_control *wbc) +{ + long nr_to_write, desired; + + if (wbc->sync_mode != WB_SYNC_NONE) + return 0; + + nr_to_write = wbc->nr_to_write; + + if (type == DATA) + desired = 4096; + else if (type == NODE) + desired = 3 * max_hw_blocks(sbi); + else + desired = MAX_BIO_BLOCKS(max_hw_blocks(sbi)); + + wbc->nr_to_write = desired; + return desired - nr_to_write; +} diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index bafff72de8e8..c756923a7302 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -50,6 +50,8 @@ enum { Opt_active_logs, Opt_disable_ext_identify, Opt_inline_xattr, + Opt_inline_data, + Opt_flush_merge, Opt_err, }; @@ -65,6 +67,8 @@ static match_table_t f2fs_tokens = { {Opt_active_logs, "active_logs=%u"}, {Opt_disable_ext_identify, "disable_ext_identify"}, {Opt_inline_xattr, "inline_xattr"}, + {Opt_inline_data, "inline_data"}, + {Opt_flush_merge, "flush_merge"}, {Opt_err, NULL}, }; @@ -72,6 +76,8 @@ static match_table_t f2fs_tokens = { enum { GC_THREAD, /* struct f2fs_gc_thread */ SM_INFO, /* struct f2fs_sm_info */ + NM_INFO, /* struct f2fs_nm_info */ + F2FS_SBI, /* struct f2fs_sb_info */ }; struct f2fs_attr { @@ -89,6 +95,10 @@ static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type) return (unsigned char *)sbi->gc_thread; else if (struct_type == SM_INFO) return (unsigned char *)SM_I(sbi); + else if (struct_type == NM_INFO) + return (unsigned char *)NM_I(sbi); + else if (struct_type == F2FS_SBI) + return (unsigned char *)sbi; return NULL; } @@ -175,6 +185,12 @@ F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time); F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time); F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_idle, gc_idle); F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments); +F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, max_small_discards, max_discards); +F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); +F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); +F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search); +F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level); #define ATTR_LIST(name) (&f2fs_attr_##name.attr) static struct attribute *f2fs_attrs[] = { @@ -183,6 +199,12 @@ static struct attribute *f2fs_attrs[] = { ATTR_LIST(gc_no_gc_sleep_time), ATTR_LIST(gc_idle), ATTR_LIST(reclaim_segments), + ATTR_LIST(max_small_discards), + ATTR_LIST(ipu_policy), + ATTR_LIST(min_ipu_util), + ATTR_LIST(max_victim_search), + ATTR_LIST(dir_level), + ATTR_LIST(ram_thresh), NULL, }; @@ -243,9 +265,9 @@ static int parse_options(struct super_block *sb, char *options) if (!name) return -ENOMEM; - if (!strncmp(name, "on", 2)) + if (strlen(name) == 2 && !strncmp(name, "on", 2)) set_opt(sbi, BG_GC); - else if (!strncmp(name, "off", 3)) + else if (strlen(name) == 3 && !strncmp(name, "off", 3)) clear_opt(sbi, BG_GC); else { kfree(name); @@ -311,6 +333,12 @@ static int parse_options(struct super_block *sb, char *options) case Opt_disable_ext_identify: set_opt(sbi, DISABLE_EXT_IDENTIFY); break; + case Opt_inline_data: + set_opt(sbi, INLINE_DATA); + break; + case Opt_flush_merge: + set_opt(sbi, FLUSH_MERGE); + break; default: f2fs_msg(sb, KERN_ERR, "Unrecognized mount option \"%s\" or missing value", @@ -325,7 +353,7 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb) { struct f2fs_inode_info *fi; - fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_NOFS | __GFP_ZERO); + fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO); if (!fi) return NULL; @@ -337,12 +365,16 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb) fi->i_current_depth = 1; fi->i_advise = 0; rwlock_init(&fi->ext.ext_lock); + init_rwsem(&fi->i_sem); set_inode_flag(fi, FI_NEW_INODE); if (test_opt(F2FS_SB(sb), INLINE_XATTR)) set_inode_flag(fi, FI_INLINE_XATTR); + /* Will be used by directory only */ + fi->i_dir_level = F2FS_SB(sb)->dir_level; + return &fi->vfs_inode; } @@ -508,7 +540,10 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root) #endif if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) seq_puts(seq, ",disable_ext_identify"); - + if (test_opt(sbi, INLINE_DATA)) + seq_puts(seq, ",inline_data"); + if (test_opt(sbi, FLUSH_MERGE)) + seq_puts(seq, ",flush_merge"); seq_printf(seq, ",active_logs=%u", sbi->active_logs); return 0; @@ -518,16 +553,26 @@ static int segment_info_seq_show(struct seq_file *seq, void *offset) { struct super_block *sb = seq->private; struct f2fs_sb_info *sbi = F2FS_SB(sb); - unsigned int total_segs = le32_to_cpu(sbi->raw_super->segment_count_main); + unsigned int total_segs = + le32_to_cpu(sbi->raw_super->segment_count_main); int i; + seq_puts(seq, "format: segment_type|valid_blocks\n" + "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); + for (i = 0; i < total_segs; i++) { - seq_printf(seq, "%u", get_valid_blocks(sbi, i, 1)); - if (i != 0 && (i % 10) == 0) - seq_puts(seq, "\n"); + struct seg_entry *se = get_seg_entry(sbi, i); + + if ((i % 10) == 0) + seq_printf(seq, "%-5d", i); + seq_printf(seq, "%d|%-3u", se->type, + get_valid_blocks(sbi, i, 1)); + if ((i % 10) == 9 || i == (total_segs - 1)) + seq_putc(seq, '\n'); else - seq_puts(seq, " "); + seq_putc(seq, ' '); } + return 0; } @@ -550,6 +595,8 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data) struct f2fs_mount_info org_mount_opt; int err, active_logs; + sync_filesystem(sb); + /* * Save the old mount options in case we * need to restore them. @@ -618,7 +665,9 @@ static struct inode *f2fs_nfs_get_inode(struct super_block *sb, struct f2fs_sb_info *sbi = F2FS_SB(sb); struct inode *inode; - if (ino < F2FS_ROOT_INO(sbi)) + if (unlikely(ino < F2FS_ROOT_INO(sbi))) + return ERR_PTR(-ESTALE); + if (unlikely(ino >= NM_I(sbi)->max_nid)) return ERR_PTR(-ESTALE); /* @@ -629,7 +678,7 @@ static struct inode *f2fs_nfs_get_inode(struct super_block *sb, inode = f2fs_iget(sb, ino); if (IS_ERR(inode)) return ERR_CAST(inode); - if (generation && inode->i_generation != generation) { + if (unlikely(generation && inode->i_generation != generation)) { /* we didn't find the right inode.. */ iput(inode); return ERR_PTR(-ESTALE); @@ -732,10 +781,10 @@ static int sanity_check_ckpt(struct f2fs_sb_info *sbi) fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); fsmeta += le32_to_cpu(raw_super->segment_count_ssa); - if (fsmeta >= total) + if (unlikely(fsmeta >= total)) return 1; - if (is_set_ckpt_flags(ckpt, CP_ERROR_FLAG)) { + if (unlikely(is_set_ckpt_flags(ckpt, CP_ERROR_FLAG))) { f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck"); return 1; } @@ -763,9 +812,12 @@ static void init_sb_info(struct f2fs_sb_info *sbi) sbi->node_ino_num = le32_to_cpu(raw_super->node_ino); sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino); sbi->cur_victim_sec = NULL_SECNO; + sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; for (i = 0; i < NR_COUNT_TYPE; i++) atomic_set(&sbi->nr_pages[i], 0); + + sbi->dir_level = DEF_DIR_LEVEL; } /* @@ -798,9 +850,10 @@ retry: /* sanity checking of raw super */ if (sanity_check_raw_super(sb, *raw_super)) { brelse(*raw_super_buf); - f2fs_msg(sb, KERN_ERR, "Can't find a valid F2FS filesystem " - "in %dth superblock", block + 1); - if(block == 0) { + f2fs_msg(sb, KERN_ERR, + "Can't find valid F2FS filesystem in %dth superblock", + block + 1); + if (block == 0) { block++; goto retry; } else { @@ -818,6 +871,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent) struct buffer_head *raw_super_buf; struct inode *root; long err = -EINVAL; + int i; /* allocate memory for f2fs-specific super block info */ sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); @@ -825,7 +879,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent) return -ENOMEM; /* set a block size */ - if (!sb_set_blocksize(sb, F2FS_BLKSIZE)) { + if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { f2fs_msg(sb, KERN_ERR, "unable to set blocksize"); goto free_sbi; } @@ -874,7 +928,16 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent) mutex_init(&sbi->node_write); sbi->por_doing = false; spin_lock_init(&sbi->stat_lock); - init_rwsem(&sbi->bio_sem); + + init_rwsem(&sbi->read_io.io_rwsem); + sbi->read_io.sbi = sbi; + sbi->read_io.bio = NULL; + for (i = 0; i < NR_PAGE_TYPE; i++) { + init_rwsem(&sbi->write_io[i].io_rwsem); + sbi->write_io[i].sbi = sbi; + sbi->write_io[i].bio = NULL; + } + init_rwsem(&sbi->cp_rwsem); init_waitqueue_head(&sbi->cp_wait); init_sb_info(sbi); @@ -939,9 +1002,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent) } /* if there are nt orphan nodes free them */ - err = -EINVAL; - if (recover_orphan_inodes(sbi)) - goto free_node_inode; + recover_orphan_inodes(sbi); /* read root inode and dentry */ root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); @@ -950,8 +1011,10 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent) err = PTR_ERR(root); goto free_node_inode; } - if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) + if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) { + err = -EINVAL; goto free_root_inode; + } sb->s_root = d_make_root(root); /* allocate root dentry */ if (!sb->s_root) { @@ -959,28 +1022,9 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent) goto free_root_inode; } - /* recover fsynced data */ - if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) { - err = recover_fsync_data(sbi); - if (err) - f2fs_msg(sb, KERN_ERR, - "Cannot recover all fsync data errno=%ld", err); - } - - /* - * If filesystem is not mounted as read-only then - * do start the gc_thread. - */ - if (!(sb->s_flags & MS_RDONLY)) { - /* After POR, we can run background GC thread.*/ - err = start_gc_thread(sbi); - if (err) - goto free_gc; - } - err = f2fs_build_stats(sbi); if (err) - goto free_gc; + goto free_root_inode; if (f2fs_proc_root) sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); @@ -1002,17 +1046,36 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent) err = kobject_init_and_add(&sbi->s_kobj, &f2fs_ktype, NULL, "%s", sb->s_id); if (err) - goto fail; + goto free_proc; + + /* recover fsynced data */ + if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) { + err = recover_fsync_data(sbi); + if (err) + f2fs_msg(sb, KERN_ERR, + "Cannot recover all fsync data errno=%ld", err); + } + /* + * If filesystem is not mounted as read-only then + * do start the gc_thread. + */ + if (!(sb->s_flags & MS_RDONLY)) { + /* After POR, we can run background GC thread.*/ + err = start_gc_thread(sbi); + if (err) + goto free_kobj; + } return 0; -fail: + +free_kobj: + kobject_del(&sbi->s_kobj); +free_proc: if (sbi->s_proc) { remove_proc_entry("segment_info", sbi->s_proc); remove_proc_entry(sb->s_id, f2fs_proc_root); } f2fs_destroy_stats(sbi); -free_gc: - stop_gc_thread(sbi); free_root_inode: dput(sb->s_root); sb->s_root = NULL; @@ -1052,8 +1115,8 @@ MODULE_ALIAS_FS("f2fs"); static int __init init_inodecache(void) { f2fs_inode_cachep = f2fs_kmem_cache_create("f2fs_inode_cache", - sizeof(struct f2fs_inode_info), NULL); - if (f2fs_inode_cachep == NULL) + sizeof(struct f2fs_inode_info)); + if (!f2fs_inode_cachep) return -ENOMEM; return 0; } @@ -1078,9 +1141,12 @@ static int __init init_f2fs_fs(void) err = create_node_manager_caches(); if (err) goto free_inodecache; - err = create_gc_caches(); + err = create_segment_manager_caches(); if (err) goto free_node_manager_caches; + err = create_gc_caches(); + if (err) + goto free_segment_manager_caches; err = create_checkpoint_caches(); if (err) goto free_gc_caches; @@ -1102,6 +1168,8 @@ free_checkpoint_caches: destroy_checkpoint_caches(); free_gc_caches: destroy_gc_caches(); +free_segment_manager_caches: + destroy_segment_manager_caches(); free_node_manager_caches: destroy_node_manager_caches(); free_inodecache: @@ -1117,6 +1185,7 @@ static void __exit exit_f2fs_fs(void) unregister_filesystem(&f2fs_fs_type); destroy_checkpoint_caches(); destroy_gc_caches(); + destroy_segment_manager_caches(); destroy_node_manager_caches(); destroy_inodecache(); kset_unregister(f2fs_kset); diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c index aa7a3f139fe5..503c2451131e 100644 --- a/fs/f2fs/xattr.c +++ b/fs/f2fs/xattr.c @@ -21,6 +21,7 @@ #include <linux/rwsem.h> #include <linux/f2fs_fs.h> #include <linux/security.h> +#include <linux/posix_acl_xattr.h> #include "f2fs.h" #include "xattr.h" @@ -216,8 +217,8 @@ const struct xattr_handler f2fs_xattr_security_handler = { static const struct xattr_handler *f2fs_xattr_handler_map[] = { [F2FS_XATTR_INDEX_USER] = &f2fs_xattr_user_handler, #ifdef CONFIG_F2FS_FS_POSIX_ACL - [F2FS_XATTR_INDEX_POSIX_ACL_ACCESS] = &f2fs_xattr_acl_access_handler, - [F2FS_XATTR_INDEX_POSIX_ACL_DEFAULT] = &f2fs_xattr_acl_default_handler, + [F2FS_XATTR_INDEX_POSIX_ACL_ACCESS] = &posix_acl_access_xattr_handler, + [F2FS_XATTR_INDEX_POSIX_ACL_DEFAULT] = &posix_acl_default_xattr_handler, #endif [F2FS_XATTR_INDEX_TRUSTED] = &f2fs_xattr_trusted_handler, #ifdef CONFIG_F2FS_FS_SECURITY @@ -229,8 +230,8 @@ static const struct xattr_handler *f2fs_xattr_handler_map[] = { const struct xattr_handler *f2fs_xattr_handlers[] = { &f2fs_xattr_user_handler, #ifdef CONFIG_F2FS_FS_POSIX_ACL - &f2fs_xattr_acl_access_handler, - &f2fs_xattr_acl_default_handler, + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, #endif &f2fs_xattr_trusted_handler, #ifdef CONFIG_F2FS_FS_SECURITY @@ -274,7 +275,7 @@ static void *read_all_xattrs(struct inode *inode, struct page *ipage) inline_size = inline_xattr_size(inode); - txattr_addr = kzalloc(inline_size + size, GFP_KERNEL); + txattr_addr = kzalloc(inline_size + size, GFP_F2FS_ZERO); if (!txattr_addr) return NULL; @@ -406,6 +407,8 @@ int f2fs_getxattr(struct inode *inode, int name_index, const char *name, if (name == NULL) return -EINVAL; name_len = strlen(name); + if (name_len > F2FS_NAME_LEN) + return -ERANGE; base_addr = read_all_xattrs(inode, NULL); if (!base_addr) @@ -522,7 +525,7 @@ static int __f2fs_setxattr(struct inode *inode, int name_index, if (found) free = free + ENTRY_SIZE(here); - if (free < newsize) { + if (unlikely(free < newsize)) { error = -ENOSPC; goto exit; } @@ -589,7 +592,10 @@ int f2fs_setxattr(struct inode *inode, int name_index, const char *name, f2fs_balance_fs(sbi); f2fs_lock_op(sbi); + /* protect xattr_ver */ + down_write(&F2FS_I(inode)->i_sem); err = __f2fs_setxattr(inode, name_index, name, value, value_len, ipage); + up_write(&F2FS_I(inode)->i_sem); f2fs_unlock_op(sbi); return err; diff --git a/fs/f2fs/xattr.h b/fs/f2fs/xattr.h index 02a08fb88a15..b21d9ebdeff3 100644 --- a/fs/f2fs/xattr.h +++ b/fs/f2fs/xattr.h @@ -108,8 +108,6 @@ struct f2fs_xattr_entry { #ifdef CONFIG_F2FS_FS_XATTR extern const struct xattr_handler f2fs_xattr_user_handler; extern const struct xattr_handler f2fs_xattr_trusted_handler; -extern const struct xattr_handler f2fs_xattr_acl_access_handler; -extern const struct xattr_handler f2fs_xattr_acl_default_handler; extern const struct xattr_handler f2fs_xattr_advise_handler; extern const struct xattr_handler f2fs_xattr_security_handler; diff --git a/fs/fat/inode.c b/fs/fat/inode.c index 854b578f6695..b3361fe2bcb5 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -490,7 +490,7 @@ EXPORT_SYMBOL_GPL(fat_build_inode); static void fat_evict_inode(struct inode *inode) { - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); if (!inode->i_nlink) { inode->i_size = 0; fat_truncate_blocks(inode, 0); @@ -635,6 +635,8 @@ static int fat_remount(struct super_block *sb, int *flags, char *data) struct msdos_sb_info *sbi = MSDOS_SB(sb); *flags |= MS_NODIRATIME | (sbi->options.isvfat ? 0 : MS_NOATIME); + sync_filesystem(sb); + /* make sure we update state on remount. */ new_rdonly = *flags & MS_RDONLY; if (new_rdonly != (sb->s_flags & MS_RDONLY)) { diff --git a/fs/fcntl.c b/fs/fcntl.c index ef6866592a0f..9ead1596399a 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -272,9 +272,19 @@ static long do_fcntl(int fd, unsigned int cmd, unsigned long arg, case F_SETFL: err = setfl(fd, filp, arg); break; +#if BITS_PER_LONG != 32 + /* 32-bit arches must use fcntl64() */ + case F_GETLKP: +#endif case F_GETLK: - err = fcntl_getlk(filp, (struct flock __user *) arg); + err = fcntl_getlk(filp, cmd, (struct flock __user *) arg); break; +#if BITS_PER_LONG != 32 + /* 32-bit arches must use fcntl64() */ + case F_SETLKP: + case F_SETLKPW: +#endif + /* Fallthrough */ case F_SETLK: case F_SETLKW: err = fcntl_setlk(fd, filp, cmd, (struct flock __user *) arg); @@ -388,17 +398,20 @@ SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned int, cmd, goto out1; switch (cmd) { - case F_GETLK64: - err = fcntl_getlk64(f.file, (struct flock64 __user *) arg); - break; - case F_SETLK64: - case F_SETLKW64: - err = fcntl_setlk64(fd, f.file, cmd, - (struct flock64 __user *) arg); - break; - default: - err = do_fcntl(fd, cmd, arg, f.file); - break; + case F_GETLK64: + case F_GETLKP: + err = fcntl_getlk64(f.file, cmd, (struct flock64 __user *) arg); + break; + case F_SETLK64: + case F_SETLKW64: + case F_SETLKP: + case F_SETLKPW: + err = fcntl_setlk64(fd, f.file, cmd, + (struct flock64 __user *) arg); + break; + default: + err = do_fcntl(fd, cmd, arg, f.file); + break; } out1: fdput(f); diff --git a/fs/file.c b/fs/file.c index 4a78f981557a..b61293badfb1 100644 --- a/fs/file.c +++ b/fs/file.c @@ -34,7 +34,7 @@ static void *alloc_fdmem(size_t size) * vmalloc() if the allocation size will be considered "large" by the VM. */ if (size <= (PAGE_SIZE << PAGE_ALLOC_COSTLY_ORDER)) { - void *data = kmalloc(size, GFP_KERNEL|__GFP_NOWARN); + void *data = kmalloc(size, GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY); if (data != NULL) return data; } @@ -348,21 +348,16 @@ out: return NULL; } -static void close_files(struct files_struct * files) +static struct fdtable *close_files(struct files_struct * files) { - int i, j; - struct fdtable *fdt; - - j = 0; - /* * It is safe to dereference the fd table without RCU or * ->file_lock because this is the last reference to the - * files structure. But use RCU to shut RCU-lockdep up. + * files structure. */ - rcu_read_lock(); - fdt = files_fdtable(files); - rcu_read_unlock(); + struct fdtable *fdt = rcu_dereference_raw(files->fdt); + int i, j = 0; + for (;;) { unsigned long set; i = j * BITS_PER_LONG; @@ -381,6 +376,8 @@ static void close_files(struct files_struct * files) set >>= 1; } } + + return fdt; } struct files_struct *get_files_struct(struct task_struct *task) @@ -398,14 +395,9 @@ struct files_struct *get_files_struct(struct task_struct *task) void put_files_struct(struct files_struct *files) { - struct fdtable *fdt; - if (atomic_dec_and_test(&files->count)) { - close_files(files); - /* not really needed, since nobody can see us */ - rcu_read_lock(); - fdt = files_fdtable(files); - rcu_read_unlock(); + struct fdtable *fdt = close_files(files); + /* free the arrays if they are not embedded */ if (fdt != &files->fdtab) __free_fdtable(fdt); @@ -505,7 +497,7 @@ repeat: error = fd; #if 1 /* Sanity check */ - if (rcu_dereference_raw(fdt->fd[fd]) != NULL) { + if (rcu_access_pointer(fdt->fd[fd]) != NULL) { printk(KERN_WARNING "alloc_fd: slot %d not NULL!\n", fd); rcu_assign_pointer(fdt->fd[fd], NULL); } @@ -645,16 +637,16 @@ void do_close_on_exec(struct files_struct *files) spin_unlock(&files->file_lock); } -struct file *fget(unsigned int fd) +static struct file *__fget(unsigned int fd, fmode_t mask) { - struct file *file; struct files_struct *files = current->files; + struct file *file; rcu_read_lock(); file = fcheck_files(files, fd); if (file) { /* File object ref couldn't be taken */ - if (file->f_mode & FMODE_PATH || + if ((file->f_mode & mask) || !atomic_long_inc_not_zero(&file->f_count)) file = NULL; } @@ -663,25 +655,16 @@ struct file *fget(unsigned int fd) return file; } +struct file *fget(unsigned int fd) +{ + return __fget(fd, FMODE_PATH); +} EXPORT_SYMBOL(fget); struct file *fget_raw(unsigned int fd) { - struct file *file; - struct files_struct *files = current->files; - - rcu_read_lock(); - file = fcheck_files(files, fd); - if (file) { - /* File object ref couldn't be taken */ - if (!atomic_long_inc_not_zero(&file->f_count)) - file = NULL; - } - rcu_read_unlock(); - - return file; + return __fget(fd, 0); } - EXPORT_SYMBOL(fget_raw); /* @@ -700,58 +683,54 @@ EXPORT_SYMBOL(fget_raw); * The fput_needed flag returned by fget_light should be passed to the * corresponding fput_light. */ -struct file *fget_light(unsigned int fd, int *fput_needed) +static unsigned long __fget_light(unsigned int fd, fmode_t mask) { - struct file *file; struct files_struct *files = current->files; + struct file *file; - *fput_needed = 0; if (atomic_read(&files->count) == 1) { - file = fcheck_files(files, fd); - if (file && (file->f_mode & FMODE_PATH)) - file = NULL; + file = __fcheck_files(files, fd); + if (!file || unlikely(file->f_mode & mask)) + return 0; + return (unsigned long)file; } else { - rcu_read_lock(); - file = fcheck_files(files, fd); - if (file) { - if (!(file->f_mode & FMODE_PATH) && - atomic_long_inc_not_zero(&file->f_count)) - *fput_needed = 1; - else - /* Didn't get the reference, someone's freed */ - file = NULL; - } - rcu_read_unlock(); + file = __fget(fd, mask); + if (!file) + return 0; + return FDPUT_FPUT | (unsigned long)file; } +} +unsigned long __fdget(unsigned int fd) +{ + return __fget_light(fd, FMODE_PATH); +} +EXPORT_SYMBOL(__fdget); - return file; +unsigned long __fdget_raw(unsigned int fd) +{ + return __fget_light(fd, 0); } -EXPORT_SYMBOL(fget_light); -struct file *fget_raw_light(unsigned int fd, int *fput_needed) +unsigned long __fdget_pos(unsigned int fd) { - struct file *file; - struct files_struct *files = current->files; + unsigned long v = __fdget(fd); + struct file *file = (struct file *)(v & ~3); - *fput_needed = 0; - if (atomic_read(&files->count) == 1) { - file = fcheck_files(files, fd); - } else { - rcu_read_lock(); - file = fcheck_files(files, fd); - if (file) { - if (atomic_long_inc_not_zero(&file->f_count)) - *fput_needed = 1; - else - /* Didn't get the reference, someone's freed */ - file = NULL; + if (file && (file->f_mode & FMODE_ATOMIC_POS)) { + if (file_count(file) > 1) { + v |= FDPUT_POS_UNLOCK; + mutex_lock(&file->f_pos_lock); } - rcu_read_unlock(); } - - return file; + return v; } +/* + * We only lock f_pos if we have threads or if the file might be + * shared with another process. In both cases we'll have an elevated + * file count (done either by fdget() or by fork()). + */ + void set_close_on_exec(unsigned int fd, int flag) { struct files_struct *files = current->files; diff --git a/fs/file_table.c b/fs/file_table.c index 5fff9030be34..01071c4d752e 100644 --- a/fs/file_table.c +++ b/fs/file_table.c @@ -135,6 +135,7 @@ struct file *get_empty_filp(void) atomic_long_set(&f->f_count, 1); rwlock_init(&f->f_owner.lock); spin_lock_init(&f->f_lock); + mutex_init(&f->f_pos_lock); eventpoll_init_file(f); /* f->f_version: 0 */ return f; @@ -234,7 +235,7 @@ static void __fput(struct file *file) * in the file cleanup chain. */ eventpoll_release(file); - locks_remove_flock(file); + locks_remove_file(file); if (unlikely(file->f_flags & FASYNC)) { if (file->f_op->fasync) diff --git a/fs/filesystems.c b/fs/filesystems.c index 92567d95ba6a..5797d45a78cb 100644 --- a/fs/filesystems.c +++ b/fs/filesystems.c @@ -121,6 +121,7 @@ int unregister_filesystem(struct file_system_type * fs) EXPORT_SYMBOL(unregister_filesystem); +#ifdef CONFIG_SYSFS_SYSCALL static int fs_index(const char __user * __name) { struct file_system_type * tmp; @@ -199,6 +200,7 @@ SYSCALL_DEFINE3(sysfs, int, option, unsigned long, arg1, unsigned long, arg2) } return retval; } +#endif int __init get_filesystem_list(char *buf) { diff --git a/fs/freevxfs/vxfs_inode.c b/fs/freevxfs/vxfs_inode.c index f47df72cef17..363e3ae25f6b 100644 --- a/fs/freevxfs/vxfs_inode.c +++ b/fs/freevxfs/vxfs_inode.c @@ -354,7 +354,7 @@ static void vxfs_i_callback(struct rcu_head *head) void vxfs_evict_inode(struct inode *ip) { - truncate_inode_pages(&ip->i_data, 0); + truncate_inode_pages_final(&ip->i_data); clear_inode(ip); call_rcu(&ip->i_rcu, vxfs_i_callback); } diff --git a/fs/freevxfs/vxfs_lookup.c b/fs/freevxfs/vxfs_lookup.c index 25d4099a4aea..99c7f0a37af4 100644 --- a/fs/freevxfs/vxfs_lookup.c +++ b/fs/freevxfs/vxfs_lookup.c @@ -192,7 +192,7 @@ vxfs_inode_by_name(struct inode *dip, struct dentry *dp) * vxfs_lookup - lookup pathname component * @dip: dir in which we lookup * @dp: dentry we lookup - * @nd: lookup nameidata + * @flags: lookup flags * * Description: * vxfs_lookup tries to lookup the pathname component described diff --git a/fs/freevxfs/vxfs_super.c b/fs/freevxfs/vxfs_super.c index e37eb274e492..7ca8c75d50d3 100644 --- a/fs/freevxfs/vxfs_super.c +++ b/fs/freevxfs/vxfs_super.c @@ -124,6 +124,7 @@ vxfs_statfs(struct dentry *dentry, struct kstatfs *bufp) static int vxfs_remount(struct super_block *sb, int *flags, char *data) { + sync_filesystem(sb); *flags |= MS_RDONLY; return 0; } diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index e0259a163f98..be568b7311d6 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -40,18 +40,13 @@ struct wb_writeback_work { long nr_pages; struct super_block *sb; - /* - * Write only inodes dirtied before this time. Don't forget to set - * older_than_this_is_set when you set this. - */ - unsigned long older_than_this; + unsigned long *older_than_this; enum writeback_sync_modes sync_mode; unsigned int tagged_writepages:1; unsigned int for_kupdate:1; unsigned int range_cyclic:1; unsigned int for_background:1; unsigned int for_sync:1; /* sync(2) WB_SYNC_ALL writeback */ - unsigned int older_than_this_is_set:1; enum wb_reason reason; /* why was writeback initiated? */ struct list_head list; /* pending work list */ @@ -94,16 +89,31 @@ static inline struct inode *wb_inode(struct list_head *head) #define CREATE_TRACE_POINTS #include <trace/events/writeback.h> +EXPORT_TRACEPOINT_SYMBOL_GPL(wbc_writepage); + +static void bdi_wakeup_thread(struct backing_dev_info *bdi) +{ + spin_lock_bh(&bdi->wb_lock); + if (test_bit(BDI_registered, &bdi->state)) + mod_delayed_work(bdi_wq, &bdi->wb.dwork, 0); + spin_unlock_bh(&bdi->wb_lock); +} + static void bdi_queue_work(struct backing_dev_info *bdi, struct wb_writeback_work *work) { trace_writeback_queue(bdi, work); spin_lock_bh(&bdi->wb_lock); + if (!test_bit(BDI_registered, &bdi->state)) { + if (work->done) + complete(work->done); + goto out_unlock; + } list_add_tail(&work->list, &bdi->work_list); - spin_unlock_bh(&bdi->wb_lock); - mod_delayed_work(bdi_wq, &bdi->wb.dwork, 0); +out_unlock: + spin_unlock_bh(&bdi->wb_lock); } static void @@ -119,7 +129,7 @@ __bdi_start_writeback(struct backing_dev_info *bdi, long nr_pages, work = kzalloc(sizeof(*work), GFP_ATOMIC); if (!work) { trace_writeback_nowork(bdi); - mod_delayed_work(bdi_wq, &bdi->wb.dwork, 0); + bdi_wakeup_thread(bdi); return; } @@ -166,7 +176,7 @@ void bdi_start_background_writeback(struct backing_dev_info *bdi) * writeback as soon as there is no other work to do. */ trace_writeback_wake_background(bdi); - mod_delayed_work(bdi_wq, &bdi->wb.dwork, 0); + bdi_wakeup_thread(bdi); } /* @@ -252,10 +262,10 @@ static int move_expired_inodes(struct list_head *delaying_queue, int do_sb_sort = 0; int moved = 0; - WARN_ON_ONCE(!work->older_than_this_is_set); while (!list_empty(delaying_queue)) { inode = wb_inode(delaying_queue->prev); - if (inode_dirtied_after(inode, work->older_than_this)) + if (work->older_than_this && + inode_dirtied_after(inode, *work->older_than_this)) break; list_move(&inode->i_wb_list, &tmp); moved++; @@ -742,8 +752,6 @@ static long writeback_inodes_wb(struct bdi_writeback *wb, long nr_pages, .sync_mode = WB_SYNC_NONE, .range_cyclic = 1, .reason = reason, - .older_than_this = jiffies, - .older_than_this_is_set = 1, }; spin_lock(&wb->list_lock); @@ -802,13 +810,12 @@ static long wb_writeback(struct bdi_writeback *wb, { unsigned long wb_start = jiffies; long nr_pages = work->nr_pages; + unsigned long oldest_jif; struct inode *inode; long progress; - if (!work->older_than_this_is_set) { - work->older_than_this = jiffies; - work->older_than_this_is_set = 1; - } + oldest_jif = jiffies; + work->older_than_this = &oldest_jif; spin_lock(&wb->list_lock); for (;;) { @@ -842,10 +849,10 @@ static long wb_writeback(struct bdi_writeback *wb, * safe. */ if (work->for_kupdate) { - work->older_than_this = jiffies - + oldest_jif = jiffies - msecs_to_jiffies(dirty_expire_interval * 10); } else if (work->for_background) - work->older_than_this = jiffies; + oldest_jif = jiffies; trace_writeback_start(wb->bdi, work); if (list_empty(&wb->b_io)) @@ -1025,7 +1032,7 @@ void bdi_writeback_workfn(struct work_struct *work) current->flags |= PF_SWAPWRITE; if (likely(!current_is_workqueue_rescuer() || - list_empty(&bdi->bdi_list))) { + !test_bit(BDI_registered, &bdi->state))) { /* * The normal path. Keep writing back @bdi until its * work_list is empty. Note that this path is also taken @@ -1047,10 +1054,10 @@ void bdi_writeback_workfn(struct work_struct *work) trace_writeback_pages_written(pages_written); } - if (!list_empty(&bdi->work_list) || - (wb_has_dirty_io(wb) && dirty_writeback_interval)) - queue_delayed_work(bdi_wq, &wb->dwork, - msecs_to_jiffies(dirty_writeback_interval * 10)); + if (!list_empty(&bdi->work_list)) + mod_delayed_work(bdi_wq, &wb->dwork, 0); + else if (wb_has_dirty_io(wb) && dirty_writeback_interval) + bdi_wakeup_thread_delayed(bdi); current->flags &= ~PF_SWAPWRITE; } @@ -1357,21 +1364,18 @@ EXPORT_SYMBOL(try_to_writeback_inodes_sb); /** * sync_inodes_sb - sync sb inode pages - * @sb: the superblock - * @older_than_this: timestamp + * @sb: the superblock * * This function writes and waits on any dirty inode belonging to this - * superblock that has been dirtied before given timestamp. + * super_block. */ -void sync_inodes_sb(struct super_block *sb, unsigned long older_than_this) +void sync_inodes_sb(struct super_block *sb) { DECLARE_COMPLETION_ONSTACK(done); struct wb_writeback_work work = { .sb = sb, .sync_mode = WB_SYNC_ALL, .nr_pages = LONG_MAX, - .older_than_this = older_than_this, - .older_than_this_is_set = 1, .range_cyclic = 0, .done = &done, .reason = WB_REASON_SYNC, diff --git a/fs/fscache/object-list.c b/fs/fscache/object-list.c index e1959efad64f..b5ebc2d7d80d 100644 --- a/fs/fscache/object-list.c +++ b/fs/fscache/object-list.c @@ -50,6 +50,8 @@ void fscache_objlist_add(struct fscache_object *obj) struct fscache_object *xobj; struct rb_node **p = &fscache_object_list.rb_node, *parent = NULL; + ASSERT(RB_EMPTY_NODE(&obj->objlist_link)); + write_lock(&fscache_object_list_lock); while (*p) { @@ -75,6 +77,9 @@ void fscache_objlist_add(struct fscache_object *obj) */ void fscache_objlist_remove(struct fscache_object *obj) { + if (RB_EMPTY_NODE(&obj->objlist_link)) + return; + write_lock(&fscache_object_list_lock); BUG_ON(RB_EMPTY_ROOT(&fscache_object_list)); diff --git a/fs/fscache/object.c b/fs/fscache/object.c index 53d35c504240..d3b4539f1651 100644 --- a/fs/fscache/object.c +++ b/fs/fscache/object.c @@ -314,6 +314,9 @@ void fscache_object_init(struct fscache_object *object, object->cache = cache; object->cookie = cookie; object->parent = NULL; +#ifdef CONFIG_FSCACHE_OBJECT_LIST + RB_CLEAR_NODE(&object->objlist_link); +#endif object->oob_event_mask = 0; for (t = object->oob_table; t->events; t++) diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c index b96a49b37d66..13b691a8a7d2 100644 --- a/fs/fuse/cuse.c +++ b/fs/fuse/cuse.c @@ -95,7 +95,7 @@ static ssize_t cuse_read(struct file *file, char __user *buf, size_t count, struct iovec iov = { .iov_base = buf, .iov_len = count }; struct fuse_io_priv io = { .async = 0, .file = file }; - return fuse_direct_io(&io, &iov, 1, count, &pos, 0); + return fuse_direct_io(&io, &iov, 1, count, &pos, FUSE_DIO_CUSE); } static ssize_t cuse_write(struct file *file, const char __user *buf, @@ -109,7 +109,8 @@ static ssize_t cuse_write(struct file *file, const char __user *buf, * No locking or generic_write_checks(), the server is * responsible for locking and sanity checks. */ - return fuse_direct_io(&io, &iov, 1, count, &pos, 1); + return fuse_direct_io(&io, &iov, 1, count, &pos, + FUSE_DIO_WRITE | FUSE_DIO_CUSE); } static int cuse_open(struct inode *inode, struct file *file) @@ -568,7 +569,7 @@ static ssize_t cuse_class_waiting_show(struct device *dev, return sprintf(buf, "%d\n", atomic_read(&cc->fc.num_waiting)); } -static DEVICE_ATTR(waiting, S_IFREG | 0400, cuse_class_waiting_show, NULL); +static DEVICE_ATTR(waiting, 0400, cuse_class_waiting_show, NULL); static ssize_t cuse_class_abort_store(struct device *dev, struct device_attribute *attr, @@ -579,7 +580,7 @@ static ssize_t cuse_class_abort_store(struct device *dev, fuse_abort_conn(&cc->fc); return count; } -static DEVICE_ATTR(abort, S_IFREG | 0200, NULL, cuse_class_abort_store); +static DEVICE_ATTR(abort, 0200, NULL, cuse_class_abort_store); static struct attribute *cuse_class_dev_attrs[] = { &dev_attr_waiting.attr, diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index ef74ad5fd362..0a648bb455ae 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -1296,22 +1296,6 @@ static ssize_t fuse_dev_read(struct kiocb *iocb, const struct iovec *iov, return fuse_dev_do_read(fc, file, &cs, iov_length(iov, nr_segs)); } -static int fuse_dev_pipe_buf_steal(struct pipe_inode_info *pipe, - struct pipe_buffer *buf) -{ - return 1; -} - -static const struct pipe_buf_operations fuse_dev_pipe_buf_ops = { - .can_merge = 0, - .map = generic_pipe_buf_map, - .unmap = generic_pipe_buf_unmap, - .confirm = generic_pipe_buf_confirm, - .release = generic_pipe_buf_release, - .steal = fuse_dev_pipe_buf_steal, - .get = generic_pipe_buf_get, -}; - static ssize_t fuse_dev_splice_read(struct file *in, loff_t *ppos, struct pipe_inode_info *pipe, size_t len, unsigned int flags) @@ -1358,7 +1342,11 @@ static ssize_t fuse_dev_splice_read(struct file *in, loff_t *ppos, buf->page = bufs[page_nr].page; buf->offset = bufs[page_nr].offset; buf->len = bufs[page_nr].len; - buf->ops = &fuse_dev_pipe_buf_ops; + /* + * Need to be careful about this. Having buf->ops in module + * code can Oops if the buffer persists after module unload. + */ + buf->ops = &nosteal_pipe_buf_ops; pipe->nrbufs++; page_nr++; @@ -1599,7 +1587,8 @@ static int fuse_notify_store(struct fuse_conn *fc, unsigned int size, this_num = min_t(unsigned, num, PAGE_CACHE_SIZE - offset); err = fuse_copy_page(cs, &page, offset, this_num, 0); - if (!err && offset == 0 && (num != 0 || file_size == end)) + if (!err && offset == 0 && + (this_num == PAGE_CACHE_SIZE || file_size == end)) SetPageUptodate(page); unlock_page(page); page_cache_release(page); diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index c3eb2c46c8f1..5b4e035b364c 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -112,6 +112,16 @@ void fuse_invalidate_attr(struct inode *inode) get_fuse_inode(inode)->i_time = 0; } +/** + * Mark the attributes as stale due to an atime change. Avoid the invalidate if + * atime is not used. + */ +void fuse_invalidate_atime(struct inode *inode) +{ + if (!IS_RDONLY(inode)) + fuse_invalidate_attr(inode); +} + /* * Just mark the entry as stale, so that a next attempt to look it up * will result in a new lookup call to userspace @@ -829,6 +839,14 @@ static void fuse_fillattr(struct inode *inode, struct fuse_attr *attr, struct kstat *stat) { unsigned int blkbits; + struct fuse_conn *fc = get_fuse_conn(inode); + + /* see the comment in fuse_change_attributes() */ + if (fc->writeback_cache && S_ISREG(inode->i_mode)) { + attr->size = i_size_read(inode); + attr->mtime = inode->i_mtime.tv_sec; + attr->mtimensec = inode->i_mtime.tv_nsec; + } stat->dev = inode->i_sb->s_dev; stat->ino = attr->ino; @@ -1371,7 +1389,7 @@ static int fuse_readdir(struct file *file, struct dir_context *ctx) } __free_page(page); - fuse_invalidate_attr(inode); /* atime changed */ + fuse_invalidate_atime(inode); return err; } @@ -1404,7 +1422,7 @@ static char *read_link(struct dentry *dentry) link[req->out.args[0].size] = '\0'; out: fuse_put_request(fc, req); - fuse_invalidate_attr(inode); /* atime changed */ + fuse_invalidate_atime(inode); return link; } @@ -1467,12 +1485,16 @@ static long fuse_dir_compat_ioctl(struct file *file, unsigned int cmd, FUSE_IOCTL_COMPAT | FUSE_IOCTL_DIR); } -static bool update_mtime(unsigned ivalid) +static bool update_mtime(unsigned ivalid, bool trust_local_mtime) { /* Always update if mtime is explicitly set */ if (ivalid & ATTR_MTIME_SET) return true; + /* Or if kernel i_mtime is the official one */ + if (trust_local_mtime) + return true; + /* If it's an open(O_TRUNC) or an ftruncate(), don't update */ if ((ivalid & ATTR_SIZE) && (ivalid & (ATTR_OPEN | ATTR_FILE))) return false; @@ -1481,7 +1503,8 @@ static bool update_mtime(unsigned ivalid) return true; } -static void iattr_to_fattr(struct iattr *iattr, struct fuse_setattr_in *arg) +static void iattr_to_fattr(struct iattr *iattr, struct fuse_setattr_in *arg, + bool trust_local_mtime) { unsigned ivalid = iattr->ia_valid; @@ -1500,11 +1523,11 @@ static void iattr_to_fattr(struct iattr *iattr, struct fuse_setattr_in *arg) if (!(ivalid & ATTR_ATIME_SET)) arg->valid |= FATTR_ATIME_NOW; } - if ((ivalid & ATTR_MTIME) && update_mtime(ivalid)) { + if ((ivalid & ATTR_MTIME) && update_mtime(ivalid, trust_local_mtime)) { arg->valid |= FATTR_MTIME; arg->mtime = iattr->ia_mtime.tv_sec; arg->mtimensec = iattr->ia_mtime.tv_nsec; - if (!(ivalid & ATTR_MTIME_SET)) + if (!(ivalid & ATTR_MTIME_SET) && !trust_local_mtime) arg->valid |= FATTR_MTIME_NOW; } } @@ -1553,6 +1576,63 @@ void fuse_release_nowrite(struct inode *inode) spin_unlock(&fc->lock); } +static void fuse_setattr_fill(struct fuse_conn *fc, struct fuse_req *req, + struct inode *inode, + struct fuse_setattr_in *inarg_p, + struct fuse_attr_out *outarg_p) +{ + req->in.h.opcode = FUSE_SETATTR; + req->in.h.nodeid = get_node_id(inode); + req->in.numargs = 1; + req->in.args[0].size = sizeof(*inarg_p); + req->in.args[0].value = inarg_p; + req->out.numargs = 1; + if (fc->minor < 9) + req->out.args[0].size = FUSE_COMPAT_ATTR_OUT_SIZE; + else + req->out.args[0].size = sizeof(*outarg_p); + req->out.args[0].value = outarg_p; +} + +/* + * Flush inode->i_mtime to the server + */ +int fuse_flush_mtime(struct file *file, bool nofail) +{ + struct inode *inode = file->f_mapping->host; + struct fuse_inode *fi = get_fuse_inode(inode); + struct fuse_conn *fc = get_fuse_conn(inode); + struct fuse_req *req = NULL; + struct fuse_setattr_in inarg; + struct fuse_attr_out outarg; + int err; + + if (nofail) { + req = fuse_get_req_nofail_nopages(fc, file); + } else { + req = fuse_get_req_nopages(fc); + if (IS_ERR(req)) + return PTR_ERR(req); + } + + memset(&inarg, 0, sizeof(inarg)); + memset(&outarg, 0, sizeof(outarg)); + + inarg.valid |= FATTR_MTIME; + inarg.mtime = inode->i_mtime.tv_sec; + inarg.mtimensec = inode->i_mtime.tv_nsec; + + fuse_setattr_fill(fc, req, inode, &inarg, &outarg); + fuse_request_send(fc, req); + err = req->out.h.error; + fuse_put_request(fc, req); + + if (!err) + clear_bit(FUSE_I_MTIME_DIRTY, &fi->state); + + return err; +} + /* * Set attributes, and at the same time refresh them. * @@ -1570,8 +1650,10 @@ int fuse_do_setattr(struct inode *inode, struct iattr *attr, struct fuse_setattr_in inarg; struct fuse_attr_out outarg; bool is_truncate = false; + bool is_wb = fc->writeback_cache; loff_t oldsize; int err; + bool trust_local_mtime = is_wb && S_ISREG(inode->i_mode); if (!(fc->flags & FUSE_DEFAULT_PERMISSIONS)) attr->ia_valid |= ATTR_FORCE; @@ -1600,7 +1682,7 @@ int fuse_do_setattr(struct inode *inode, struct iattr *attr, memset(&inarg, 0, sizeof(inarg)); memset(&outarg, 0, sizeof(outarg)); - iattr_to_fattr(attr, &inarg); + iattr_to_fattr(attr, &inarg, trust_local_mtime); if (file) { struct fuse_file *ff = file->private_data; inarg.valid |= FATTR_FH; @@ -1611,17 +1693,7 @@ int fuse_do_setattr(struct inode *inode, struct iattr *attr, inarg.valid |= FATTR_LOCKOWNER; inarg.lock_owner = fuse_lock_owner_id(fc, current->files); } - req->in.h.opcode = FUSE_SETATTR; - req->in.h.nodeid = get_node_id(inode); - req->in.numargs = 1; - req->in.args[0].size = sizeof(inarg); - req->in.args[0].value = &inarg; - req->out.numargs = 1; - if (fc->minor < 9) - req->out.args[0].size = FUSE_COMPAT_ATTR_OUT_SIZE; - else - req->out.args[0].size = sizeof(outarg); - req->out.args[0].value = &outarg; + fuse_setattr_fill(fc, req, inode, &inarg, &outarg); fuse_request_send(fc, req); err = req->out.h.error; fuse_put_request(fc, req); @@ -1638,10 +1710,18 @@ int fuse_do_setattr(struct inode *inode, struct iattr *attr, } spin_lock(&fc->lock); + /* the kernel maintains i_mtime locally */ + if (trust_local_mtime && (attr->ia_valid & ATTR_MTIME)) { + inode->i_mtime = attr->ia_mtime; + clear_bit(FUSE_I_MTIME_DIRTY, &fi->state); + } + fuse_change_attributes_common(inode, &outarg.attr, attr_timeout(&outarg)); oldsize = inode->i_size; - i_size_write(inode, outarg.attr.size); + /* see the comment in fuse_change_attributes() */ + if (!is_wb || is_truncate || !S_ISREG(inode->i_mode)) + i_size_write(inode, outarg.attr.size); if (is_truncate) { /* NOTE: this may release/reacquire fc->lock */ @@ -1653,7 +1733,8 @@ int fuse_do_setattr(struct inode *inode, struct iattr *attr, * Only call invalidate_inode_pages2() after removing * FUSE_NOWRITE, otherwise fuse_launder_page() would deadlock. */ - if (S_ISREG(inode->i_mode) && oldsize != outarg.attr.size) { + if ((is_truncate || !is_wb) && + S_ISREG(inode->i_mode) && oldsize != outarg.attr.size) { truncate_pagecache(inode, outarg.attr.size); invalidate_inode_pages2(inode->i_mapping); } @@ -1865,6 +1946,17 @@ static int fuse_removexattr(struct dentry *entry, const char *name) return err; } +static int fuse_update_time(struct inode *inode, struct timespec *now, + int flags) +{ + if (flags & S_MTIME) { + inode->i_mtime = *now; + set_bit(FUSE_I_MTIME_DIRTY, &get_fuse_inode(inode)->state); + BUG_ON(!S_ISREG(inode->i_mode)); + } + return 0; +} + static const struct inode_operations fuse_dir_inode_operations = { .lookup = fuse_lookup, .mkdir = fuse_mkdir, @@ -1904,6 +1996,7 @@ static const struct inode_operations fuse_common_inode_operations = { .getxattr = fuse_getxattr, .listxattr = fuse_listxattr, .removexattr = fuse_removexattr, + .update_time = fuse_update_time, }; static const struct inode_operations fuse_symlink_inode_operations = { diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 7e70506297bc..48992cac714b 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -127,7 +127,15 @@ static void fuse_file_put(struct fuse_file *ff, bool sync) if (atomic_dec_and_test(&ff->count)) { struct fuse_req *req = ff->reserved_req; - if (sync) { + if (ff->fc->no_open) { + /* + * Drop the release request when client does not + * implement 'open' + */ + req->background = 0; + path_put(&req->misc.release.path); + fuse_put_request(ff->fc, req); + } else if (sync) { req->background = 0; fuse_request_send(ff->fc, req); path_put(&req->misc.release.path); @@ -144,33 +152,58 @@ static void fuse_file_put(struct fuse_file *ff, bool sync) int fuse_do_open(struct fuse_conn *fc, u64 nodeid, struct file *file, bool isdir) { - struct fuse_open_out outarg; struct fuse_file *ff; - int err; int opcode = isdir ? FUSE_OPENDIR : FUSE_OPEN; ff = fuse_file_alloc(fc); if (!ff) return -ENOMEM; - err = fuse_send_open(fc, nodeid, file, opcode, &outarg); - if (err) { - fuse_file_free(ff); - return err; + ff->fh = 0; + ff->open_flags = FOPEN_KEEP_CACHE; /* Default for no-open */ + if (!fc->no_open || isdir) { + struct fuse_open_out outarg; + int err; + + err = fuse_send_open(fc, nodeid, file, opcode, &outarg); + if (!err) { + ff->fh = outarg.fh; + ff->open_flags = outarg.open_flags; + + } else if (err != -ENOSYS || isdir) { + fuse_file_free(ff); + return err; + } else { + fc->no_open = 1; + } } if (isdir) - outarg.open_flags &= ~FOPEN_DIRECT_IO; + ff->open_flags &= ~FOPEN_DIRECT_IO; - ff->fh = outarg.fh; ff->nodeid = nodeid; - ff->open_flags = outarg.open_flags; file->private_data = fuse_file_get(ff); return 0; } EXPORT_SYMBOL_GPL(fuse_do_open); +static void fuse_link_write_file(struct file *file) +{ + struct inode *inode = file_inode(file); + struct fuse_conn *fc = get_fuse_conn(inode); + struct fuse_inode *fi = get_fuse_inode(inode); + struct fuse_file *ff = file->private_data; + /* + * file may be written through mmap, so chain it onto the + * inodes's write_file list + */ + spin_lock(&fc->lock); + if (list_empty(&ff->write_entry)) + list_add(&ff->write_entry, &fi->write_files); + spin_unlock(&fc->lock); +} + void fuse_finish_open(struct inode *inode, struct file *file) { struct fuse_file *ff = file->private_data; @@ -191,6 +224,8 @@ void fuse_finish_open(struct inode *inode, struct file *file) spin_unlock(&fc->lock); fuse_invalidate_attr(inode); } + if ((file->f_mode & FMODE_WRITE) && fc->writeback_cache) + fuse_link_write_file(file); } int fuse_open_common(struct inode *inode, struct file *file, bool isdir) @@ -275,6 +310,15 @@ static int fuse_open(struct inode *inode, struct file *file) static int fuse_release(struct inode *inode, struct file *file) { + struct fuse_conn *fc = get_fuse_conn(inode); + + /* see fuse_vma_close() for !writeback_cache case */ + if (fc->writeback_cache) + filemap_write_and_wait(file->f_mapping); + + if (test_bit(FUSE_I_MTIME_DIRTY, &get_fuse_inode(inode)->state)) + fuse_flush_mtime(file, true); + fuse_release_common(file, FUSE_RELEASE); /* return value is ignored by VFS */ @@ -316,12 +360,13 @@ u64 fuse_lock_owner_id(struct fuse_conn *fc, fl_owner_t id) } /* - * Check if page is under writeback + * Check if any page in a range is under writeback * * This is currently done by walking the list of writepage requests * for the inode, which can be pretty inefficient. */ -static bool fuse_page_is_writeback(struct inode *inode, pgoff_t index) +static bool fuse_range_is_writeback(struct inode *inode, pgoff_t idx_from, + pgoff_t idx_to) { struct fuse_conn *fc = get_fuse_conn(inode); struct fuse_inode *fi = get_fuse_inode(inode); @@ -334,8 +379,8 @@ static bool fuse_page_is_writeback(struct inode *inode, pgoff_t index) BUG_ON(req->inode != inode); curr_index = req->misc.write.in.offset >> PAGE_CACHE_SHIFT; - if (curr_index <= index && - index < curr_index + req->num_pages) { + if (idx_from < curr_index + req->num_pages && + curr_index <= idx_to) { found = true; break; } @@ -345,6 +390,11 @@ static bool fuse_page_is_writeback(struct inode *inode, pgoff_t index) return found; } +static inline bool fuse_page_is_writeback(struct inode *inode, pgoff_t index) +{ + return fuse_range_is_writeback(inode, index, index); +} + /* * Wait for page writeback to be completed. * @@ -359,6 +409,21 @@ static int fuse_wait_on_page_writeback(struct inode *inode, pgoff_t index) return 0; } +/* + * Wait for all pending writepages on the inode to finish. + * + * This is currently done by blocking further writes with FUSE_NOWRITE + * and waiting for all sent writes to complete. + * + * This must be called under i_mutex, otherwise the FUSE_NOWRITE usage + * could conflict with truncation. + */ +static void fuse_sync_writes(struct inode *inode) +{ + fuse_set_nowrite(inode); + fuse_release_nowrite(inode); +} + static int fuse_flush(struct file *file, fl_owner_t id) { struct inode *inode = file_inode(file); @@ -374,6 +439,14 @@ static int fuse_flush(struct file *file, fl_owner_t id) if (fc->no_flush) return 0; + err = filemap_write_and_wait(file->f_mapping); + if (err) + return err; + + mutex_lock(&inode->i_mutex); + fuse_sync_writes(inode); + mutex_unlock(&inode->i_mutex); + req = fuse_get_req_nofail_nopages(fc, file); memset(&inarg, 0, sizeof(inarg)); inarg.fh = ff->fh; @@ -394,21 +467,6 @@ static int fuse_flush(struct file *file, fl_owner_t id) return err; } -/* - * Wait for all pending writepages on the inode to finish. - * - * This is currently done by blocking further writes with FUSE_NOWRITE - * and waiting for all sent writes to complete. - * - * This must be called under i_mutex, otherwise the FUSE_NOWRITE usage - * could conflict with truncation. - */ -static void fuse_sync_writes(struct inode *inode) -{ - fuse_set_nowrite(inode); - fuse_release_nowrite(inode); -} - int fuse_fsync_common(struct file *file, loff_t start, loff_t end, int datasync, int isdir) { @@ -442,6 +500,12 @@ int fuse_fsync_common(struct file *file, loff_t start, loff_t end, fuse_sync_writes(inode); + if (test_bit(FUSE_I_MTIME_DIRTY, &get_fuse_inode(inode)->state)) { + int err = fuse_flush_mtime(file, false); + if (err) + goto out; + } + req = fuse_get_req_nopages(fc); if (IS_ERR(req)) { err = PTR_ERR(req); @@ -638,7 +702,33 @@ static void fuse_read_update_size(struct inode *inode, loff_t size, spin_unlock(&fc->lock); } -static int fuse_readpage(struct file *file, struct page *page) +static void fuse_short_read(struct fuse_req *req, struct inode *inode, + u64 attr_ver) +{ + size_t num_read = req->out.args[0].size; + struct fuse_conn *fc = get_fuse_conn(inode); + + if (fc->writeback_cache) { + /* + * A hole in a file. Some data after the hole are in page cache, + * but have not reached the client fs yet. So, the hole is not + * present there. + */ + int i; + int start_idx = num_read >> PAGE_CACHE_SHIFT; + size_t off = num_read & (PAGE_CACHE_SIZE - 1); + + for (i = start_idx; i < req->num_pages; i++) { + zero_user_segment(req->pages[i], off, PAGE_CACHE_SIZE); + off = 0; + } + } else { + loff_t pos = page_offset(req->pages[0]) + num_read; + fuse_read_update_size(inode, pos, attr_ver); + } +} + +static int fuse_do_readpage(struct file *file, struct page *page) { struct fuse_io_priv io = { .async = 0, .file = file }; struct inode *inode = page->mapping->host; @@ -650,10 +740,6 @@ static int fuse_readpage(struct file *file, struct page *page) u64 attr_ver; int err; - err = -EIO; - if (is_bad_inode(inode)) - goto out; - /* * Page writeback can extend beyond the lifetime of the * page-cache page, so make sure we read a properly synced @@ -662,9 +748,8 @@ static int fuse_readpage(struct file *file, struct page *page) fuse_wait_on_page_writeback(inode, page->index); req = fuse_get_req(fc, 1); - err = PTR_ERR(req); if (IS_ERR(req)) - goto out; + return PTR_ERR(req); attr_ver = fuse_get_attr_version(fc); @@ -675,19 +760,33 @@ static int fuse_readpage(struct file *file, struct page *page) req->page_descs[0].length = count; num_read = fuse_send_read(req, &io, pos, count, NULL); err = req->out.h.error; - fuse_put_request(fc, req); if (!err) { /* * Short read means EOF. If file size is larger, truncate it */ if (num_read < count) - fuse_read_update_size(inode, pos + num_read, attr_ver); + fuse_short_read(req, inode, attr_ver); SetPageUptodate(page); } - fuse_invalidate_attr(inode); /* atime changed */ + fuse_put_request(fc, req); + + return err; +} + +static int fuse_readpage(struct file *file, struct page *page) +{ + struct inode *inode = page->mapping->host; + int err; + + err = -EIO; + if (is_bad_inode(inode)) + goto out; + + err = fuse_do_readpage(file, page); + fuse_invalidate_atime(inode); out: unlock_page(page); return err; @@ -709,14 +808,10 @@ static void fuse_readpages_end(struct fuse_conn *fc, struct fuse_req *req) /* * Short read means EOF. If file size is larger, truncate it */ - if (!req->out.h.error && num_read < count) { - loff_t pos; + if (!req->out.h.error && num_read < count) + fuse_short_read(req, inode, req->misc.read.attr_ver); - pos = page_offset(req->pages[0]) + num_read; - fuse_read_update_size(inode, pos, - req->misc.read.attr_ver); - } - fuse_invalidate_attr(inode); /* atime changed */ + fuse_invalidate_atime(inode); } for (i = 0; i < req->num_pages; i++) { @@ -905,16 +1000,21 @@ static size_t fuse_send_write(struct fuse_req *req, struct fuse_io_priv *io, return req->misc.write.out.size; } -void fuse_write_update_size(struct inode *inode, loff_t pos) +bool fuse_write_update_size(struct inode *inode, loff_t pos) { struct fuse_conn *fc = get_fuse_conn(inode); struct fuse_inode *fi = get_fuse_inode(inode); + bool ret = false; spin_lock(&fc->lock); fi->attr_version = ++fc->attr_version; - if (pos > inode->i_size) + if (pos > inode->i_size) { i_size_write(inode, pos); + ret = true; + } spin_unlock(&fc->lock); + + return ret; } static size_t fuse_send_write_pages(struct fuse_req *req, struct file *file, @@ -1099,6 +1199,15 @@ static ssize_t fuse_file_aio_write(struct kiocb *iocb, const struct iovec *iov, struct iov_iter i; loff_t endbyte = 0; + if (get_fuse_conn(inode)->writeback_cache) { + /* Update size (EOF optimization) and mode (SUID clearing) */ + err = fuse_update_attributes(mapping->host, NULL, file, NULL); + if (err) + return err; + + return generic_file_aio_write(iocb, iov, nr_segs, pos); + } + WARN_ON(iocb->ki_pos != pos); ocount = 0; @@ -1272,13 +1381,18 @@ static inline int fuse_iter_npages(const struct iov_iter *ii_p) ssize_t fuse_direct_io(struct fuse_io_priv *io, const struct iovec *iov, unsigned long nr_segs, size_t count, loff_t *ppos, - int write) + int flags) { + int write = flags & FUSE_DIO_WRITE; + int cuse = flags & FUSE_DIO_CUSE; struct file *file = io->file; + struct inode *inode = file->f_mapping->host; struct fuse_file *ff = file->private_data; struct fuse_conn *fc = ff->fc; size_t nmax = write ? fc->max_write : fc->max_read; loff_t pos = *ppos; + pgoff_t idx_from = pos >> PAGE_CACHE_SHIFT; + pgoff_t idx_to = (pos + count - 1) >> PAGE_CACHE_SHIFT; ssize_t res = 0; struct fuse_req *req; struct iov_iter ii; @@ -1292,6 +1406,14 @@ ssize_t fuse_direct_io(struct fuse_io_priv *io, const struct iovec *iov, if (IS_ERR(req)) return PTR_ERR(req); + if (!cuse && fuse_range_is_writeback(inode, idx_from, idx_to)) { + if (!write) + mutex_lock(&inode->i_mutex); + fuse_sync_writes(inode); + if (!write) + mutex_unlock(&inode->i_mutex); + } + while (count) { size_t nres; fl_owner_t owner = current->files; @@ -1380,7 +1502,8 @@ static ssize_t __fuse_direct_write(struct fuse_io_priv *io, res = generic_write_checks(file, ppos, &count, 0); if (!res) - res = fuse_direct_io(io, iov, nr_segs, count, ppos, 1); + res = fuse_direct_io(io, iov, nr_segs, count, ppos, + FUSE_DIO_WRITE); fuse_invalidate_attr(inode); @@ -1868,6 +1991,77 @@ out: return err; } +/* + * It's worthy to make sure that space is reserved on disk for the write, + * but how to implement it without killing performance need more thinking. + */ +static int fuse_write_begin(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned flags, + struct page **pagep, void **fsdata) +{ + pgoff_t index = pos >> PAGE_CACHE_SHIFT; + struct fuse_conn *fc = get_fuse_conn(file->f_dentry->d_inode); + struct page *page; + loff_t fsize; + int err = -ENOMEM; + + WARN_ON(!fc->writeback_cache); + + page = grab_cache_page_write_begin(mapping, index, flags); + if (!page) + goto error; + + fuse_wait_on_page_writeback(mapping->host, page->index); + + if (PageUptodate(page) || len == PAGE_CACHE_SIZE) + goto success; + /* + * Check if the start this page comes after the end of file, in which + * case the readpage can be optimized away. + */ + fsize = i_size_read(mapping->host); + if (fsize <= (pos & PAGE_CACHE_MASK)) { + size_t off = pos & ~PAGE_CACHE_MASK; + if (off) + zero_user_segment(page, 0, off); + goto success; + } + err = fuse_do_readpage(file, page); + if (err) + goto cleanup; +success: + *pagep = page; + return 0; + +cleanup: + unlock_page(page); + page_cache_release(page); +error: + return err; +} + +static int fuse_write_end(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned copied, + struct page *page, void *fsdata) +{ + struct inode *inode = page->mapping->host; + + if (!PageUptodate(page)) { + /* Zero any unwritten bytes at the end of the page */ + size_t endoff = (pos + copied) & ~PAGE_CACHE_MASK; + if (endoff) + zero_user_segment(page, endoff, PAGE_CACHE_SIZE); + SetPageUptodate(page); + } + + fuse_write_update_size(inode, pos + copied); + set_page_dirty(page); + unlock_page(page); + page_cache_release(page); + + return copied; +} + static int fuse_launder_page(struct page *page) { int err = 0; @@ -1923,26 +2117,16 @@ static int fuse_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) static const struct vm_operations_struct fuse_file_vm_ops = { .close = fuse_vma_close, .fault = filemap_fault, + .map_pages = filemap_map_pages, .page_mkwrite = fuse_page_mkwrite, .remap_pages = generic_file_remap_pages, }; static int fuse_file_mmap(struct file *file, struct vm_area_struct *vma) { - if ((vma->vm_flags & VM_SHARED) && (vma->vm_flags & VM_MAYWRITE)) { - struct inode *inode = file_inode(file); - struct fuse_conn *fc = get_fuse_conn(inode); - struct fuse_inode *fi = get_fuse_inode(inode); - struct fuse_file *ff = file->private_data; - /* - * file may be written through mmap, so chain it onto the - * inodes's write_file list - */ - spin_lock(&fc->lock); - if (list_empty(&ff->write_entry)) - list_add(&ff->write_entry, &fi->write_files); - spin_unlock(&fc->lock); - } + if ((vma->vm_flags & VM_SHARED) && (vma->vm_flags & VM_MAYWRITE)) + fuse_link_write_file(file); + file_accessed(file); vma->vm_ops = &fuse_file_vm_ops; return 0; @@ -2589,7 +2773,7 @@ static void fuse_register_polled_file(struct fuse_conn *fc, { spin_lock(&fc->lock); if (RB_EMPTY_NODE(&ff->polled_node)) { - struct rb_node **link, *parent; + struct rb_node **link, *uninitialized_var(parent); link = fuse_find_polled_node(fc, ff->kh, &parent); BUG_ON(*link); @@ -2710,6 +2894,9 @@ fuse_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov, inode = file->f_mapping->host; i_size = i_size_read(inode); + if ((rw == READ) && (offset > i_size)) + return 0; + /* optimization for short read */ if (async_dio && rw != WRITE && offset + count > i_size) { if (offset >= i_size) @@ -2830,8 +3017,16 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset, goto out; /* we could have extended the file */ - if (!(mode & FALLOC_FL_KEEP_SIZE)) - fuse_write_update_size(inode, offset + length); + if (!(mode & FALLOC_FL_KEEP_SIZE)) { + bool changed = fuse_write_update_size(inode, offset + length); + + if (changed && fc->writeback_cache) { + struct fuse_inode *fi = get_fuse_inode(inode); + + inode->i_mtime = current_fs_time(inode->i_sb); + set_bit(FUSE_I_MTIME_DIRTY, &fi->state); + } + } if (mode & FALLOC_FL_PUNCH_HOLE) truncate_pagecache_range(inode, offset, offset + length - 1); @@ -2895,6 +3090,8 @@ static const struct address_space_operations fuse_file_aops = { .set_page_dirty = __set_page_dirty_nobuffers, .bmap = fuse_bmap, .direct_IO = fuse_direct_IO, + .write_begin = fuse_write_begin, + .write_end = fuse_write_end, }; void fuse_init_file_inode(struct inode *inode) diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 7d2730912667..a257ed8ebee6 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -119,6 +119,8 @@ enum { FUSE_I_INIT_RDPLUS, /** An operation changing file size is in progress */ FUSE_I_SIZE_UNSTABLE, + /** i_mtime has been updated locally; a flush to userspace needed */ + FUSE_I_MTIME_DIRTY, }; struct fuse_conn; @@ -480,11 +482,17 @@ struct fuse_conn { /** Set if bdi is valid */ unsigned bdi_initialized:1; + /** write-back cache policy (default is write-through) */ + unsigned writeback_cache:1; + /* * The following bitfields are only for optimization purposes * and hence races in setting them will not cause malfunction */ + /** Is open/release not implemented by fs? */ + unsigned no_open:1; + /** Is fsync not implemented by fs? */ unsigned no_fsync:1; @@ -788,6 +796,8 @@ void fuse_invalidate_attr(struct inode *inode); void fuse_invalidate_entry_cache(struct dentry *entry); +void fuse_invalidate_atime(struct inode *inode); + /** * Acquire reference to fuse_conn */ @@ -858,9 +868,20 @@ int fuse_reverse_inval_entry(struct super_block *sb, u64 parent_nodeid, int fuse_do_open(struct fuse_conn *fc, u64 nodeid, struct file *file, bool isdir); + +/** + * fuse_direct_io() flags + */ + +/** If set, it is WRITE; otherwise - READ */ +#define FUSE_DIO_WRITE (1 << 0) + +/** CUSE pass fuse_direct_io() a file which f_mapping->host is not from FUSE */ +#define FUSE_DIO_CUSE (1 << 1) + ssize_t fuse_direct_io(struct fuse_io_priv *io, const struct iovec *iov, unsigned long nr_segs, size_t count, loff_t *ppos, - int write); + int flags); long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg, unsigned int flags); long fuse_ioctl_common(struct file *file, unsigned int cmd, @@ -868,7 +889,9 @@ long fuse_ioctl_common(struct file *file, unsigned int cmd, unsigned fuse_file_poll(struct file *file, poll_table *wait); int fuse_dev_release(struct inode *inode, struct file *file); -void fuse_write_update_size(struct inode *inode, loff_t pos); +bool fuse_write_update_size(struct inode *inode, loff_t pos); + +int fuse_flush_mtime(struct file *file, bool nofail); int fuse_do_setattr(struct inode *inode, struct iattr *attr, struct file *file); diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index d468643a68b2..8d611696fcad 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -123,7 +123,7 @@ static void fuse_destroy_inode(struct inode *inode) static void fuse_evict_inode(struct inode *inode) { - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); if (inode->i_sb->s_flags & MS_ACTIVE) { struct fuse_conn *fc = get_fuse_conn(inode); @@ -135,6 +135,7 @@ static void fuse_evict_inode(struct inode *inode) static int fuse_remount_fs(struct super_block *sb, int *flags, char *data) { + sync_filesystem(sb); if (*flags & MS_MANDLOCK) return -EINVAL; @@ -170,8 +171,11 @@ void fuse_change_attributes_common(struct inode *inode, struct fuse_attr *attr, inode->i_blocks = attr->blocks; inode->i_atime.tv_sec = attr->atime; inode->i_atime.tv_nsec = attr->atimensec; - inode->i_mtime.tv_sec = attr->mtime; - inode->i_mtime.tv_nsec = attr->mtimensec; + /* mtime from server may be stale due to local buffered write */ + if (!fc->writeback_cache || !S_ISREG(inode->i_mode)) { + inode->i_mtime.tv_sec = attr->mtime; + inode->i_mtime.tv_nsec = attr->mtimensec; + } inode->i_ctime.tv_sec = attr->ctime; inode->i_ctime.tv_nsec = attr->ctimensec; @@ -197,6 +201,7 @@ void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr, { struct fuse_conn *fc = get_fuse_conn(inode); struct fuse_inode *fi = get_fuse_inode(inode); + bool is_wb = fc->writeback_cache; loff_t oldsize; struct timespec old_mtime; @@ -211,10 +216,16 @@ void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr, fuse_change_attributes_common(inode, attr, attr_valid); oldsize = inode->i_size; - i_size_write(inode, attr->size); + /* + * In case of writeback_cache enabled, the cached writes beyond EOF + * extend local i_size without keeping userspace server in sync. So, + * attr->size coming from server can be stale. We cannot trust it. + */ + if (!is_wb || !S_ISREG(inode->i_mode)) + i_size_write(inode, attr->size); spin_unlock(&fc->lock); - if (S_ISREG(inode->i_mode)) { + if (!is_wb && S_ISREG(inode->i_mode)) { bool inval = false; if (oldsize != attr->size) { @@ -243,6 +254,8 @@ static void fuse_init_inode(struct inode *inode, struct fuse_attr *attr) { inode->i_mode = attr->mode & S_IFMT; inode->i_size = attr->size; + inode->i_mtime.tv_sec = attr->mtime; + inode->i_mtime.tv_nsec = attr->mtimensec; if (S_ISREG(inode->i_mode)) { fuse_init_common(inode); fuse_init_file_inode(inode); @@ -289,7 +302,9 @@ struct inode *fuse_iget(struct super_block *sb, u64 nodeid, return NULL; if ((inode->i_state & I_NEW)) { - inode->i_flags |= S_NOATIME|S_NOCMTIME; + inode->i_flags |= S_NOATIME; + if (!fc->writeback_cache || !S_ISREG(inode->i_mode)) + inode->i_flags |= S_NOCMTIME; inode->i_generation = generation; inode->i_data.backing_dev_info = &fc->bdi; fuse_init_inode(inode, attr); @@ -873,6 +888,8 @@ static void process_init_reply(struct fuse_conn *fc, struct fuse_req *req) } if (arg->flags & FUSE_ASYNC_DIO) fc->async_dio = 1; + if (arg->flags & FUSE_WRITEBACK_CACHE) + fc->writeback_cache = 1; } else { ra_pages = fc->max_read / PAGE_CACHE_SIZE; fc->no_lock = 1; @@ -900,7 +917,8 @@ static void fuse_send_init(struct fuse_conn *fc, struct fuse_req *req) FUSE_EXPORT_SUPPORT | FUSE_BIG_WRITES | FUSE_DONT_MASK | FUSE_SPLICE_WRITE | FUSE_SPLICE_MOVE | FUSE_SPLICE_READ | FUSE_FLOCK_LOCKS | FUSE_IOCTL_DIR | FUSE_AUTO_INVAL_DATA | - FUSE_DO_READDIRPLUS | FUSE_READDIRPLUS_AUTO | FUSE_ASYNC_DIO; + FUSE_DO_READDIRPLUS | FUSE_READDIRPLUS_AUTO | FUSE_ASYNC_DIO | + FUSE_WRITEBACK_CACHE; req->in.h.opcode = FUSE_INIT; req->in.numargs = 1; req->in.args[0].size = sizeof(*arg); diff --git a/fs/generic_acl.c b/fs/generic_acl.c deleted file mode 100644 index b3f3676796d3..000000000000 --- a/fs/generic_acl.c +++ /dev/null @@ -1,184 +0,0 @@ -/* - * (C) 2005 Andreas Gruenbacher <agruen@suse.de> - * - * This file is released under the GPL. - * - * Generic ACL support for in-memory filesystems. - */ - -#include <linux/sched.h> -#include <linux/gfp.h> -#include <linux/fs.h> -#include <linux/generic_acl.h> -#include <linux/posix_acl.h> -#include <linux/posix_acl_xattr.h> - - -static size_t -generic_acl_list(struct dentry *dentry, char *list, size_t list_size, - const char *name, size_t name_len, int type) -{ - struct posix_acl *acl; - const char *xname; - size_t size; - - acl = get_cached_acl(dentry->d_inode, type); - if (!acl) - return 0; - posix_acl_release(acl); - - switch (type) { - case ACL_TYPE_ACCESS: - xname = POSIX_ACL_XATTR_ACCESS; - break; - case ACL_TYPE_DEFAULT: - xname = POSIX_ACL_XATTR_DEFAULT; - break; - default: - return 0; - } - size = strlen(xname) + 1; - if (list && size <= list_size) - memcpy(list, xname, size); - return size; -} - -static int -generic_acl_get(struct dentry *dentry, const char *name, void *buffer, - size_t size, int type) -{ - struct posix_acl *acl; - int error; - - if (strcmp(name, "") != 0) - return -EINVAL; - - acl = get_cached_acl(dentry->d_inode, type); - if (!acl) - return -ENODATA; - error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size); - posix_acl_release(acl); - - return error; -} - -static int -generic_acl_set(struct dentry *dentry, const char *name, const void *value, - size_t size, int flags, int type) -{ - struct inode *inode = dentry->d_inode; - struct posix_acl *acl = NULL; - int error; - - if (strcmp(name, "") != 0) - return -EINVAL; - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - if (!inode_owner_or_capable(inode)) - return -EPERM; - if (value) { - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (IS_ERR(acl)) - return PTR_ERR(acl); - } - if (acl) { - error = posix_acl_valid(acl); - if (error) - goto failed; - switch (type) { - case ACL_TYPE_ACCESS: - error = posix_acl_equiv_mode(acl, &inode->i_mode); - if (error < 0) - goto failed; - inode->i_ctime = CURRENT_TIME; - if (error == 0) { - posix_acl_release(acl); - acl = NULL; - } - break; - case ACL_TYPE_DEFAULT: - if (!S_ISDIR(inode->i_mode)) { - error = -EINVAL; - goto failed; - } - break; - } - } - set_cached_acl(inode, type, acl); - error = 0; -failed: - posix_acl_release(acl); - return error; -} - -/** - * generic_acl_init - Take care of acl inheritance at @inode create time - * - * Files created inside a directory with a default ACL inherit the - * directory's default ACL. - */ -int -generic_acl_init(struct inode *inode, struct inode *dir) -{ - struct posix_acl *acl = NULL; - int error; - - if (!S_ISLNK(inode->i_mode)) - acl = get_cached_acl(dir, ACL_TYPE_DEFAULT); - if (acl) { - if (S_ISDIR(inode->i_mode)) - set_cached_acl(inode, ACL_TYPE_DEFAULT, acl); - error = posix_acl_create(&acl, GFP_KERNEL, &inode->i_mode); - if (error < 0) - return error; - if (error > 0) - set_cached_acl(inode, ACL_TYPE_ACCESS, acl); - } else { - inode->i_mode &= ~current_umask(); - } - error = 0; - - posix_acl_release(acl); - return error; -} - -/** - * generic_acl_chmod - change the access acl of @inode upon chmod() - * - * A chmod also changes the permissions of the owner, group/mask, and - * other ACL entries. - */ -int -generic_acl_chmod(struct inode *inode) -{ - struct posix_acl *acl; - int error = 0; - - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - acl = get_cached_acl(inode, ACL_TYPE_ACCESS); - if (acl) { - error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); - if (error) - return error; - set_cached_acl(inode, ACL_TYPE_ACCESS, acl); - posix_acl_release(acl); - } - return error; -} - -const struct xattr_handler generic_acl_access_handler = { - .prefix = POSIX_ACL_XATTR_ACCESS, - .flags = ACL_TYPE_ACCESS, - .list = generic_acl_list, - .get = generic_acl_get, - .set = generic_acl_set, -}; - -const struct xattr_handler generic_acl_default_handler = { - .prefix = POSIX_ACL_XATTR_DEFAULT, - .flags = ACL_TYPE_DEFAULT, - .list = generic_acl_list, - .get = generic_acl_get, - .set = generic_acl_set, -}; diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c index f69ac0af5496..3088e2a38e30 100644 --- a/fs/gfs2/acl.c +++ b/fs/gfs2/acl.c @@ -49,10 +49,6 @@ struct posix_acl *gfs2_get_acl(struct inode *inode, int type) if (!ip->i_eattr) return NULL; - acl = get_cached_acl(&ip->i_inode, type); - if (acl != ACL_NOT_CACHED) - return acl; - name = gfs2_acl_name(type); if (name == NULL) return ERR_PTR(-EINVAL); @@ -68,19 +64,7 @@ struct posix_acl *gfs2_get_acl(struct inode *inode, int type) return acl; } -static int gfs2_set_mode(struct inode *inode, umode_t mode) -{ - int error = 0; - - if (mode != inode->i_mode) { - inode->i_mode = mode; - mark_inode_dirty(inode); - } - - return error; -} - -static int gfs2_acl_set(struct inode *inode, int type, struct posix_acl *acl) +int gfs2_set_acl(struct inode *inode, struct posix_acl *acl, int type) { int error; int len; @@ -88,219 +72,50 @@ static int gfs2_acl_set(struct inode *inode, int type, struct posix_acl *acl) const char *name = gfs2_acl_name(type); BUG_ON(name == NULL); - len = posix_acl_to_xattr(&init_user_ns, acl, NULL, 0); - if (len == 0) - return 0; - data = kmalloc(len, GFP_NOFS); - if (data == NULL) - return -ENOMEM; - error = posix_acl_to_xattr(&init_user_ns, acl, data, len); - if (error < 0) - goto out; - error = __gfs2_xattr_set(inode, name, data, len, 0, GFS2_EATYPE_SYS); - if (!error) - set_cached_acl(inode, type, acl); -out: - kfree(data); - return error; -} - -int gfs2_acl_create(struct gfs2_inode *dip, struct inode *inode) -{ - struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); - struct posix_acl *acl; - umode_t mode = inode->i_mode; - int error = 0; - - if (!sdp->sd_args.ar_posix_acl) - return 0; - if (S_ISLNK(inode->i_mode)) - return 0; - - acl = gfs2_get_acl(&dip->i_inode, ACL_TYPE_DEFAULT); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (!acl) { - mode &= ~current_umask(); - return gfs2_set_mode(inode, mode); - } - - if (S_ISDIR(inode->i_mode)) { - error = gfs2_acl_set(inode, ACL_TYPE_DEFAULT, acl); - if (error) - goto out; - } - - error = posix_acl_create(&acl, GFP_NOFS, &mode); - if (error < 0) - return error; - - if (error == 0) - goto munge; - - error = gfs2_acl_set(inode, ACL_TYPE_ACCESS, acl); - if (error) - goto out; -munge: - error = gfs2_set_mode(inode, mode); -out: - posix_acl_release(acl); - return error; -} - -int gfs2_acl_chmod(struct gfs2_inode *ip, struct iattr *attr) -{ - struct inode *inode = &ip->i_inode; - struct posix_acl *acl; - char *data; - unsigned int len; - int error; - - acl = gfs2_get_acl(&ip->i_inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (!acl) - return gfs2_setattr_simple(inode, attr); - - error = posix_acl_chmod(&acl, GFP_NOFS, attr->ia_mode); - if (error) - return error; - - len = posix_acl_to_xattr(&init_user_ns, acl, NULL, 0); - data = kmalloc(len, GFP_NOFS); - error = -ENOMEM; - if (data == NULL) - goto out; - posix_acl_to_xattr(&init_user_ns, acl, data, len); - error = gfs2_xattr_acl_chmod(ip, attr, data); - kfree(data); - set_cached_acl(&ip->i_inode, ACL_TYPE_ACCESS, acl); - -out: - posix_acl_release(acl); - return error; -} - -static int gfs2_acl_type(const char *name) -{ - if (strcmp(name, GFS2_POSIX_ACL_ACCESS) == 0) - return ACL_TYPE_ACCESS; - if (strcmp(name, GFS2_POSIX_ACL_DEFAULT) == 0) - return ACL_TYPE_DEFAULT; - return -EINVAL; -} - -static int gfs2_xattr_system_get(struct dentry *dentry, const char *name, - void *buffer, size_t size, int xtype) -{ - struct inode *inode = dentry->d_inode; - struct gfs2_sbd *sdp = GFS2_SB(inode); - struct posix_acl *acl; - int type; - int error; - - if (!sdp->sd_args.ar_posix_acl) - return -EOPNOTSUPP; - - type = gfs2_acl_type(name); - if (type < 0) - return type; - - acl = gfs2_get_acl(inode, type); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl == NULL) - return -ENODATA; - - error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size); - posix_acl_release(acl); - - return error; -} - -static int gfs2_xattr_system_set(struct dentry *dentry, const char *name, - const void *value, size_t size, int flags, - int xtype) -{ - struct inode *inode = dentry->d_inode; - struct gfs2_sbd *sdp = GFS2_SB(inode); - struct posix_acl *acl = NULL; - int error = 0, type; - - if (!sdp->sd_args.ar_posix_acl) - return -EOPNOTSUPP; - type = gfs2_acl_type(name); - if (type < 0) - return type; - if (flags & XATTR_CREATE) - return -EINVAL; - if (type == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode)) - return value ? -EACCES : 0; - if (!uid_eq(current_fsuid(), inode->i_uid) && !capable(CAP_FOWNER)) - return -EPERM; - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - - if (!value) - goto set_acl; - - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (!acl) { - /* - * acl_set_file(3) may request that we set default ACLs with - * zero length -- defend (gracefully) against that here. - */ - goto out; - } - if (IS_ERR(acl)) { - error = PTR_ERR(acl); - goto out; - } - - error = posix_acl_valid(acl); - if (error) - goto out_release; - - error = -EINVAL; - if (acl->a_count > GFS2_ACL_MAX_ENTRIES) - goto out_release; + if (acl->a_count > GFS2_ACL_MAX_ENTRIES(GFS2_SB(inode))) + return -E2BIG; if (type == ACL_TYPE_ACCESS) { umode_t mode = inode->i_mode; + error = posix_acl_equiv_mode(acl, &mode); + if (error < 0) + return error; - if (error <= 0) { - posix_acl_release(acl); + if (error == 0) acl = NULL; - if (error < 0) - return error; + if (mode != inode->i_mode) { + inode->i_mode = mode; + mark_inode_dirty(inode); } - - error = gfs2_set_mode(inode, mode); - if (error) - goto out_release; } -set_acl: - error = __gfs2_xattr_set(inode, name, value, size, 0, GFS2_EATYPE_SYS); - if (!error) { - if (acl) - set_cached_acl(inode, type, acl); - else - forget_cached_acl(inode, type); + if (acl) { + len = posix_acl_to_xattr(&init_user_ns, acl, NULL, 0); + if (len == 0) + return 0; + data = kmalloc(len, GFP_NOFS); + if (data == NULL) + return -ENOMEM; + error = posix_acl_to_xattr(&init_user_ns, acl, data, len); + if (error < 0) + goto out; + } else { + data = NULL; + len = 0; } -out_release: - posix_acl_release(acl); + + error = __gfs2_xattr_set(inode, name, data, len, 0, GFS2_EATYPE_SYS); + if (error) + goto out; + + if (acl) + set_cached_acl(inode, type, acl); + else + forget_cached_acl(inode, type); out: + kfree(data); return error; } - -const struct xattr_handler gfs2_xattr_system_handler = { - .prefix = XATTR_SYSTEM_PREFIX, - .flags = GFS2_EATYPE_SYS, - .get = gfs2_xattr_system_get, - .set = gfs2_xattr_system_set, -}; - diff --git a/fs/gfs2/acl.h b/fs/gfs2/acl.h index 0da38dc7efec..2d65ec4cd4be 100644 --- a/fs/gfs2/acl.h +++ b/fs/gfs2/acl.h @@ -14,11 +14,9 @@ #define GFS2_POSIX_ACL_ACCESS "posix_acl_access" #define GFS2_POSIX_ACL_DEFAULT "posix_acl_default" -#define GFS2_ACL_MAX_ENTRIES 25 +#define GFS2_ACL_MAX_ENTRIES(sdp) ((300 << (sdp)->sd_sb.sb_bsize_shift) >> 12) extern struct posix_acl *gfs2_get_acl(struct inode *inode, int type); -extern int gfs2_acl_create(struct gfs2_inode *dip, struct inode *inode); -extern int gfs2_acl_chmod(struct gfs2_inode *ip, struct iattr *attr); -extern const struct xattr_handler gfs2_xattr_system_handler; +extern int gfs2_set_acl(struct inode *inode, struct posix_acl *acl, int type); #endif /* __ACL_DOT_H__ */ diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index 73f3e4ee4037..ce62dcac90b6 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -21,6 +21,7 @@ #include <linux/gfs2_ondisk.h> #include <linux/backing-dev.h> #include <linux/aio.h> +#include <trace/events/writeback.h> #include "gfs2.h" #include "incore.h" @@ -230,13 +231,11 @@ static int gfs2_writepages(struct address_space *mapping, static int gfs2_write_jdata_pagevec(struct address_space *mapping, struct writeback_control *wbc, struct pagevec *pvec, - int nr_pages, pgoff_t end) + int nr_pages, pgoff_t end, + pgoff_t *done_index) { struct inode *inode = mapping->host; struct gfs2_sbd *sdp = GFS2_SB(inode); - loff_t i_size = i_size_read(inode); - pgoff_t end_index = i_size >> PAGE_CACHE_SHIFT; - unsigned offset = i_size & (PAGE_CACHE_SIZE-1); unsigned nrblocks = nr_pages * (PAGE_CACHE_SIZE/inode->i_sb->s_blocksize); int i; int ret; @@ -248,40 +247,83 @@ static int gfs2_write_jdata_pagevec(struct address_space *mapping, for(i = 0; i < nr_pages; i++) { struct page *page = pvec->pages[i]; + /* + * At this point, the page may be truncated or + * invalidated (changing page->mapping to NULL), or + * even swizzled back from swapper_space to tmpfs file + * mapping. However, page->index will not change + * because we have a reference on the page. + */ + if (page->index > end) { + /* + * can't be range_cyclic (1st pass) because + * end == -1 in that case. + */ + ret = 1; + break; + } + + *done_index = page->index; + lock_page(page); if (unlikely(page->mapping != mapping)) { +continue_unlock: unlock_page(page); continue; } - if (!wbc->range_cyclic && page->index > end) { - ret = 1; - unlock_page(page); - continue; + if (!PageDirty(page)) { + /* someone wrote it for us */ + goto continue_unlock; } - if (wbc->sync_mode != WB_SYNC_NONE) - wait_on_page_writeback(page); - - if (PageWriteback(page) || - !clear_page_dirty_for_io(page)) { - unlock_page(page); - continue; + if (PageWriteback(page)) { + if (wbc->sync_mode != WB_SYNC_NONE) + wait_on_page_writeback(page); + else + goto continue_unlock; } - /* Is the page fully outside i_size? (truncate in progress) */ - if (page->index > end_index || (page->index == end_index && !offset)) { - page->mapping->a_ops->invalidatepage(page, 0, - PAGE_CACHE_SIZE); - unlock_page(page); - continue; - } + BUG_ON(PageWriteback(page)); + if (!clear_page_dirty_for_io(page)) + goto continue_unlock; + + trace_wbc_writepage(wbc, mapping->backing_dev_info); ret = __gfs2_jdata_writepage(page, wbc); + if (unlikely(ret)) { + if (ret == AOP_WRITEPAGE_ACTIVATE) { + unlock_page(page); + ret = 0; + } else { + + /* + * done_index is set past this page, + * so media errors will not choke + * background writeout for the entire + * file. This has consequences for + * range_cyclic semantics (ie. it may + * not be suitable for data integrity + * writeout). + */ + *done_index = page->index + 1; + ret = 1; + break; + } + } - if (ret || (--(wbc->nr_to_write) <= 0)) + /* + * We stop writing back only if we are not doing + * integrity sync. In case of integrity sync we have to + * keep going until we have written all the pages + * we tagged for writeback prior to entering this loop. + */ + if (--wbc->nr_to_write <= 0 && wbc->sync_mode == WB_SYNC_NONE) { ret = 1; + break; + } + } gfs2_trans_end(sdp); return ret; @@ -306,51 +348,69 @@ static int gfs2_write_cache_jdata(struct address_space *mapping, int done = 0; struct pagevec pvec; int nr_pages; + pgoff_t uninitialized_var(writeback_index); pgoff_t index; pgoff_t end; - int scanned = 0; + pgoff_t done_index; + int cycled; int range_whole = 0; + int tag; pagevec_init(&pvec, 0); if (wbc->range_cyclic) { - index = mapping->writeback_index; /* Start from prev offset */ + writeback_index = mapping->writeback_index; /* prev offset */ + index = writeback_index; + if (index == 0) + cycled = 1; + else + cycled = 0; end = -1; } else { index = wbc->range_start >> PAGE_CACHE_SHIFT; end = wbc->range_end >> PAGE_CACHE_SHIFT; if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) range_whole = 1; - scanned = 1; + cycled = 1; /* ignore range_cyclic tests */ } + if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) + tag = PAGECACHE_TAG_TOWRITE; + else + tag = PAGECACHE_TAG_DIRTY; retry: - while (!done && (index <= end) && - (nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, - PAGECACHE_TAG_DIRTY, - min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1))) { - scanned = 1; - ret = gfs2_write_jdata_pagevec(mapping, wbc, &pvec, nr_pages, end); + if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) + tag_pages_for_writeback(mapping, index, end); + done_index = index; + while (!done && (index <= end)) { + nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, tag, + min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); + if (nr_pages == 0) + break; + + ret = gfs2_write_jdata_pagevec(mapping, wbc, &pvec, nr_pages, end, &done_index); if (ret) done = 1; if (ret > 0) ret = 0; - pagevec_release(&pvec); cond_resched(); } - if (!scanned && !done) { + if (!cycled && !done) { /* + * range_cyclic: * We hit the last page and there is more work to be done: wrap * back to the start of the file */ - scanned = 1; + cycled = 1; index = 0; + end = writeback_index - 1; goto retry; } if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0)) - mapping->writeback_index = index; + mapping->writeback_index = done_index; + return ret; } @@ -1032,8 +1092,9 @@ static ssize_t gfs2_direct_IO(int rw, struct kiocb *iocb, unmap_shared_mapping_range(ip->i_inode.i_mapping, offset, len); rv = filemap_write_and_wait_range(mapping, lstart, end); if (rv) - return rv; - truncate_inode_pages_range(mapping, lstart, end); + goto out; + if (rw == WRITE) + truncate_inode_pages_range(mapping, lstart, end); } rv = __blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov, @@ -1080,30 +1141,22 @@ int gfs2_releasepage(struct page *page, gfp_t gfp_mask) bh = bh->b_this_page; } while(bh != head); spin_unlock(&sdp->sd_ail_lock); - gfs2_log_unlock(sdp); head = bh = page_buffers(page); do { - gfs2_log_lock(sdp); bd = bh->b_private; if (bd) { gfs2_assert_warn(sdp, bd->bd_bh == bh); - if (!list_empty(&bd->bd_list)) { - if (!buffer_pinned(bh)) - list_del_init(&bd->bd_list); - else - bd = NULL; - } - if (bd) - bd->bd_bh = NULL; + if (!list_empty(&bd->bd_list)) + list_del_init(&bd->bd_list); + bd->bd_bh = NULL; bh->b_private = NULL; - } - gfs2_log_unlock(sdp); - if (bd) kmem_cache_free(gfs2_bufdata_cachep, bd); + } bh = bh->b_this_page; } while (bh != head); + gfs2_log_unlock(sdp); return try_to_free_buffers(page); diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index fe0500c0af7a..c62d4b9f51dc 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -1328,6 +1328,121 @@ int gfs2_file_dealloc(struct gfs2_inode *ip) } /** + * gfs2_free_journal_extents - Free cached journal bmap info + * @jd: The journal + * + */ + +void gfs2_free_journal_extents(struct gfs2_jdesc *jd) +{ + struct gfs2_journal_extent *jext; + + while(!list_empty(&jd->extent_list)) { + jext = list_entry(jd->extent_list.next, struct gfs2_journal_extent, list); + list_del(&jext->list); + kfree(jext); + } +} + +/** + * gfs2_add_jextent - Add or merge a new extent to extent cache + * @jd: The journal descriptor + * @lblock: The logical block at start of new extent + * @pblock: The physical block at start of new extent + * @blocks: Size of extent in fs blocks + * + * Returns: 0 on success or -ENOMEM + */ + +static int gfs2_add_jextent(struct gfs2_jdesc *jd, u64 lblock, u64 dblock, u64 blocks) +{ + struct gfs2_journal_extent *jext; + + if (!list_empty(&jd->extent_list)) { + jext = list_entry(jd->extent_list.prev, struct gfs2_journal_extent, list); + if ((jext->dblock + jext->blocks) == dblock) { + jext->blocks += blocks; + return 0; + } + } + + jext = kzalloc(sizeof(struct gfs2_journal_extent), GFP_NOFS); + if (jext == NULL) + return -ENOMEM; + jext->dblock = dblock; + jext->lblock = lblock; + jext->blocks = blocks; + list_add_tail(&jext->list, &jd->extent_list); + jd->nr_extents++; + return 0; +} + +/** + * gfs2_map_journal_extents - Cache journal bmap info + * @sdp: The super block + * @jd: The journal to map + * + * Create a reusable "extent" mapping from all logical + * blocks to all physical blocks for the given journal. This will save + * us time when writing journal blocks. Most journals will have only one + * extent that maps all their logical blocks. That's because gfs2.mkfs + * arranges the journal blocks sequentially to maximize performance. + * So the extent would map the first block for the entire file length. + * However, gfs2_jadd can happen while file activity is happening, so + * those journals may not be sequential. Less likely is the case where + * the users created their own journals by mounting the metafs and + * laying it out. But it's still possible. These journals might have + * several extents. + * + * Returns: 0 on success, or error on failure + */ + +int gfs2_map_journal_extents(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd) +{ + u64 lblock = 0; + u64 lblock_stop; + struct gfs2_inode *ip = GFS2_I(jd->jd_inode); + struct buffer_head bh; + unsigned int shift = sdp->sd_sb.sb_bsize_shift; + u64 size; + int rc; + + lblock_stop = i_size_read(jd->jd_inode) >> shift; + size = (lblock_stop - lblock) << shift; + jd->nr_extents = 0; + WARN_ON(!list_empty(&jd->extent_list)); + + do { + bh.b_state = 0; + bh.b_blocknr = 0; + bh.b_size = size; + rc = gfs2_block_map(jd->jd_inode, lblock, &bh, 0); + if (rc || !buffer_mapped(&bh)) + goto fail; + rc = gfs2_add_jextent(jd, lblock, bh.b_blocknr, bh.b_size >> shift); + if (rc) + goto fail; + size -= bh.b_size; + lblock += (bh.b_size >> ip->i_inode.i_blkbits); + } while(size > 0); + + fs_info(sdp, "journal %d mapped with %u extents\n", jd->jd_jid, + jd->nr_extents); + return 0; + +fail: + fs_warn(sdp, "error %d mapping journal %u at offset %llu (extent %u)\n", + rc, jd->jd_jid, + (unsigned long long)(i_size_read(jd->jd_inode) - size), + jd->nr_extents); + fs_warn(sdp, "bmap=%d lblock=%llu block=%llu, state=0x%08lx, size=%llu\n", + rc, (unsigned long long)lblock, (unsigned long long)bh.b_blocknr, + bh.b_state, (unsigned long long)bh.b_size); + gfs2_free_journal_extents(jd); + return rc; +} + +/** * gfs2_write_alloc_required - figure out if a write will require an allocation * @ip: the file being written to * @offset: the offset to write to diff --git a/fs/gfs2/bmap.h b/fs/gfs2/bmap.h index 42fea03e2bd9..81ded5e2aaa2 100644 --- a/fs/gfs2/bmap.h +++ b/fs/gfs2/bmap.h @@ -55,5 +55,7 @@ extern int gfs2_truncatei_resume(struct gfs2_inode *ip); extern int gfs2_file_dealloc(struct gfs2_inode *ip); extern int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset, unsigned int len); +extern int gfs2_map_journal_extents(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd); +extern void gfs2_free_journal_extents(struct gfs2_jdesc *jd); #endif /* __BMAP_DOT_H__ */ diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index 2e5fc268d324..1a349f9a9685 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -53,6 +53,8 @@ * but never before the maximum hash table size has been reached. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/buffer_head.h> @@ -507,8 +509,8 @@ static int gfs2_check_dirent(struct gfs2_dirent *dent, unsigned int offset, goto error; return 0; error: - printk(KERN_WARNING "gfs2_check_dirent: %s (%s)\n", msg, - first ? "first in block" : "not first in block"); + pr_warn("%s: %s (%s)\n", + __func__, msg, first ? "first in block" : "not first in block"); return -EIO; } @@ -531,8 +533,7 @@ static int gfs2_dirent_offset(const void *buf) } return offset; wrong_type: - printk(KERN_WARNING "gfs2_scan_dirent: wrong block type %u\n", - be32_to_cpu(h->mh_type)); + pr_warn("%s: wrong block type %u\n", __func__, be32_to_cpu(h->mh_type)); return -1; } @@ -728,7 +729,7 @@ static int get_leaf(struct gfs2_inode *dip, u64 leaf_no, error = gfs2_meta_read(dip->i_gl, leaf_no, DIO_WAIT, bhp); if (!error && gfs2_metatype_check(GFS2_SB(&dip->i_inode), *bhp, GFS2_METATYPE_LF)) { - /* printk(KERN_INFO "block num=%llu\n", leaf_no); */ + /* pr_info("block num=%llu\n", leaf_no); */ error = -EIO; } @@ -834,6 +835,7 @@ static struct gfs2_leaf *new_leaf(struct inode *inode, struct buffer_head **pbh, struct gfs2_leaf *leaf; struct gfs2_dirent *dent; struct qstr name = { .name = "" }; + struct timespec tv = CURRENT_TIME; error = gfs2_alloc_blocks(ip, &bn, &n, 0, NULL); if (error) @@ -850,7 +852,11 @@ static struct gfs2_leaf *new_leaf(struct inode *inode, struct buffer_head **pbh, leaf->lf_entries = 0; leaf->lf_dirent_format = cpu_to_be32(GFS2_FORMAT_DE); leaf->lf_next = 0; - memset(leaf->lf_reserved, 0, sizeof(leaf->lf_reserved)); + leaf->lf_inode = cpu_to_be64(ip->i_no_addr); + leaf->lf_dist = cpu_to_be32(1); + leaf->lf_nsec = cpu_to_be32(tv.tv_nsec); + leaf->lf_sec = cpu_to_be64(tv.tv_sec); + memset(leaf->lf_reserved2, 0, sizeof(leaf->lf_reserved2)); dent = (struct gfs2_dirent *)(leaf+1); gfs2_qstr2dirent(&name, bh->b_size - sizeof(struct gfs2_leaf), dent); *pbh = bh; @@ -1001,7 +1007,8 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name) len = 1 << (dip->i_depth - be16_to_cpu(oleaf->lf_depth)); half_len = len >> 1; if (!half_len) { - printk(KERN_WARNING "i_depth %u lf_depth %u index %u\n", dip->i_depth, be16_to_cpu(oleaf->lf_depth), index); + pr_warn("i_depth %u lf_depth %u index %u\n", + dip->i_depth, be16_to_cpu(oleaf->lf_depth), index); gfs2_consist_inode(dip); error = -EIO; goto fail_brelse; @@ -1612,11 +1619,31 @@ out: return ret; } +/** + * dir_new_leaf - Add a new leaf onto hash chain + * @inode: The directory + * @name: The name we are adding + * + * This adds a new dir leaf onto an existing leaf when there is not + * enough space to add a new dir entry. This is a last resort after + * we've expanded the hash table to max size and also split existing + * leaf blocks, so it will only occur for very large directories. + * + * The dist parameter is set to 1 for leaf blocks directly attached + * to the hash table, 2 for one layer of indirection, 3 for two layers + * etc. We are thus able to tell the difference between an old leaf + * with dist set to zero (i.e. "don't know") and a new one where we + * set this information for debug/fsck purposes. + * + * Returns: 0 on success, or -ve on error + */ + static int dir_new_leaf(struct inode *inode, const struct qstr *name) { struct buffer_head *bh, *obh; struct gfs2_inode *ip = GFS2_I(inode); struct gfs2_leaf *leaf, *oleaf; + u32 dist = 1; int error; u32 index; u64 bn; @@ -1626,6 +1653,7 @@ static int dir_new_leaf(struct inode *inode, const struct qstr *name) if (error) return error; do { + dist++; oleaf = (struct gfs2_leaf *)obh->b_data; bn = be64_to_cpu(oleaf->lf_next); if (!bn) @@ -1643,6 +1671,7 @@ static int dir_new_leaf(struct inode *inode, const struct qstr *name) brelse(obh); return -ENOSPC; } + leaf->lf_dist = cpu_to_be32(dist); oleaf->lf_next = cpu_to_be64(bh->b_blocknr); brelse(bh); brelse(obh); @@ -1657,41 +1686,64 @@ static int dir_new_leaf(struct inode *inode, const struct qstr *name) return 0; } +static u16 gfs2_inode_ra_len(const struct gfs2_inode *ip) +{ + u64 where = ip->i_no_addr + 1; + if (ip->i_eattr == where) + return 1; + return 0; +} + /** * gfs2_dir_add - Add new filename into directory - * @dip: The GFS2 inode - * @filename: The new name - * @inode: The inode number of the entry - * @type: The type of the entry + * @inode: The directory inode + * @name: The new name + * @nip: The GFS2 inode to be linked in to the directory + * @da: The directory addition info + * + * If the call to gfs2_diradd_alloc_required resulted in there being + * no need to allocate any new directory blocks, then it will contain + * a pointer to the directory entry and the bh in which it resides. We + * can use that without having to repeat the search. If there was no + * free space, then we must now create more space. * * Returns: 0 on success, error code on failure */ int gfs2_dir_add(struct inode *inode, const struct qstr *name, - const struct gfs2_inode *nip) + const struct gfs2_inode *nip, struct gfs2_diradd *da) { struct gfs2_inode *ip = GFS2_I(inode); - struct buffer_head *bh; - struct gfs2_dirent *dent; + struct buffer_head *bh = da->bh; + struct gfs2_dirent *dent = da->dent; + struct timespec tv; struct gfs2_leaf *leaf; int error; while(1) { - dent = gfs2_dirent_search(inode, name, gfs2_dirent_find_space, - &bh); + if (da->bh == NULL) { + dent = gfs2_dirent_search(inode, name, + gfs2_dirent_find_space, &bh); + } if (dent) { if (IS_ERR(dent)) return PTR_ERR(dent); dent = gfs2_init_dirent(inode, dent, name, bh); gfs2_inum_out(nip, dent); dent->de_type = cpu_to_be16(IF2DT(nip->i_inode.i_mode)); + dent->de_rahead = cpu_to_be16(gfs2_inode_ra_len(nip)); + tv = CURRENT_TIME; if (ip->i_diskflags & GFS2_DIF_EXHASH) { leaf = (struct gfs2_leaf *)bh->b_data; be16_add_cpu(&leaf->lf_entries, 1); + leaf->lf_nsec = cpu_to_be32(tv.tv_nsec); + leaf->lf_sec = cpu_to_be64(tv.tv_sec); } + da->dent = NULL; + da->bh = NULL; brelse(bh); ip->i_entries++; - ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME; + ip->i_inode.i_mtime = ip->i_inode.i_ctime = tv; if (S_ISDIR(nip->i_inode.i_mode)) inc_nlink(&ip->i_inode); mark_inode_dirty(inode); @@ -1742,6 +1794,7 @@ int gfs2_dir_del(struct gfs2_inode *dip, const struct dentry *dentry) const struct qstr *name = &dentry->d_name; struct gfs2_dirent *dent, *prev = NULL; struct buffer_head *bh; + struct timespec tv = CURRENT_TIME; /* Returns _either_ the entry (if its first in block) or the previous entry otherwise */ @@ -1767,13 +1820,15 @@ int gfs2_dir_del(struct gfs2_inode *dip, const struct dentry *dentry) if (!entries) gfs2_consist_inode(dip); leaf->lf_entries = cpu_to_be16(--entries); + leaf->lf_nsec = cpu_to_be32(tv.tv_nsec); + leaf->lf_sec = cpu_to_be64(tv.tv_sec); } brelse(bh); if (!dip->i_entries) gfs2_consist_inode(dip); dip->i_entries--; - dip->i_inode.i_mtime = dip->i_inode.i_ctime = CURRENT_TIME; + dip->i_inode.i_mtime = dip->i_inode.i_ctime = tv; if (S_ISDIR(dentry->d_inode->i_mode)) drop_nlink(&dip->i_inode); mark_inode_dirty(&dip->i_inode); @@ -2017,22 +2072,36 @@ out: * gfs2_diradd_alloc_required - find if adding entry will require an allocation * @ip: the file being written to * @filname: the filename that's going to be added + * @da: The structure to return dir alloc info * - * Returns: 1 if alloc required, 0 if not, -ve on error + * Returns: 0 if ok, -ve on error */ -int gfs2_diradd_alloc_required(struct inode *inode, const struct qstr *name) +int gfs2_diradd_alloc_required(struct inode *inode, const struct qstr *name, + struct gfs2_diradd *da) { + struct gfs2_inode *ip = GFS2_I(inode); + struct gfs2_sbd *sdp = GFS2_SB(inode); + const unsigned int extra = sizeof(struct gfs2_dinode) - sizeof(struct gfs2_leaf); struct gfs2_dirent *dent; struct buffer_head *bh; + da->nr_blocks = 0; + da->bh = NULL; + da->dent = NULL; + dent = gfs2_dirent_search(inode, name, gfs2_dirent_find_space, &bh); if (!dent) { - return 1; + da->nr_blocks = sdp->sd_max_dirres; + if (!(ip->i_diskflags & GFS2_DIF_EXHASH) && + (GFS2_DIRENT_SIZE(name->len) < extra)) + da->nr_blocks = 1; + return 0; } if (IS_ERR(dent)) return PTR_ERR(dent); - brelse(bh); + da->bh = bh; + da->dent = dent; return 0; } diff --git a/fs/gfs2/dir.h b/fs/gfs2/dir.h index 4f03bbd1873f..126c65dda028 100644 --- a/fs/gfs2/dir.h +++ b/fs/gfs2/dir.h @@ -16,6 +16,14 @@ struct inode; struct gfs2_inode; struct gfs2_inum; +struct buffer_head; +struct gfs2_dirent; + +struct gfs2_diradd { + unsigned nr_blocks; + struct gfs2_dirent *dent; + struct buffer_head *bh; +}; extern struct inode *gfs2_dir_search(struct inode *dir, const struct qstr *filename, @@ -23,7 +31,13 @@ extern struct inode *gfs2_dir_search(struct inode *dir, extern int gfs2_dir_check(struct inode *dir, const struct qstr *filename, const struct gfs2_inode *ip); extern int gfs2_dir_add(struct inode *inode, const struct qstr *filename, - const struct gfs2_inode *ip); + const struct gfs2_inode *ip, struct gfs2_diradd *da); +static inline void gfs2_dir_no_add(struct gfs2_diradd *da) +{ + if (da->bh) + brelse(da->bh); + da->bh = NULL; +} extern int gfs2_dir_del(struct gfs2_inode *dip, const struct dentry *dentry); extern int gfs2_dir_read(struct inode *inode, struct dir_context *ctx, struct file_ra_state *f_ra); @@ -33,7 +47,8 @@ extern int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename, extern int gfs2_dir_exhash_dealloc(struct gfs2_inode *dip); extern int gfs2_diradd_alloc_required(struct inode *dir, - const struct qstr *filename); + const struct qstr *filename, + struct gfs2_diradd *da); extern int gfs2_dir_get_new_buffer(struct gfs2_inode *ip, u64 block, struct buffer_head **bhp); extern void gfs2_dir_hash_inval(struct gfs2_inode *ip); diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index efc078f0ee4e..80d67253623c 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -494,6 +494,7 @@ out: static const struct vm_operations_struct gfs2_vm_ops = { .fault = filemap_fault, + .map_pages = filemap_map_pages, .page_mkwrite = gfs2_page_mkwrite, .remap_pages = generic_file_remap_pages, }; @@ -811,6 +812,8 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset, loff_t bsize_mask = ~((loff_t)sdp->sd_sb.sb_bsize - 1); loff_t next = (offset + len - 1) >> sdp->sd_sb.sb_bsize_shift; loff_t max_chunk_size = UINT_MAX & bsize_mask; + struct gfs2_holder gh; + next = (next + 1) << sdp->sd_sb.sb_bsize_shift; /* We only support the FALLOC_FL_KEEP_SIZE mode */ @@ -831,8 +834,10 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset, if (error) return error; - gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &ip->i_gh); - error = gfs2_glock_nq(&ip->i_gh); + mutex_lock(&inode->i_mutex); + + gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); + error = gfs2_glock_nq(&gh); if (unlikely(error)) goto out_uninit; @@ -900,9 +905,10 @@ out_trans_fail: out_qunlock: gfs2_quota_unlock(ip); out_unlock: - gfs2_glock_dq(&ip->i_gh); + gfs2_glock_dq(&gh); out_uninit: - gfs2_holder_uninit(&ip->i_gh); + gfs2_holder_uninit(&gh); + mutex_unlock(&inode->i_mutex); return error; } diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 6f7a47c05259..aec7f73832f0 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -7,6 +7,8 @@ * of the GNU General Public License version 2. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/sched.h> #include <linux/slab.h> #include <linux/spinlock.h> @@ -468,7 +470,7 @@ retry: do_xmote(gl, gh, LM_ST_UNLOCKED); break; default: /* Everything else */ - printk(KERN_ERR "GFS2: wanted %u got %u\n", gl->gl_target, state); + pr_err("wanted %u got %u\n", gl->gl_target, state); GLOCK_BUG_ON(gl, 1); } spin_unlock(&gl->gl_spin); @@ -542,7 +544,7 @@ __acquires(&gl->gl_spin) /* lock_dlm */ ret = sdp->sd_lockstruct.ls_ops->lm_lock(gl, target, lck_flags); if (ret) { - printk(KERN_ERR "GFS2: lm_lock ret %d\n", ret); + pr_err("lm_lock ret %d\n", ret); GLOCK_BUG_ON(gl, 1); } } else { /* lock_nolock */ @@ -935,7 +937,7 @@ void gfs2_print_dbg(struct seq_file *seq, const char *fmt, ...) vaf.fmt = fmt; vaf.va = &args; - printk(KERN_ERR " %pV", &vaf); + pr_err("%pV", &vaf); } va_end(args); @@ -1010,13 +1012,13 @@ do_cancel: return; trap_recursive: - printk(KERN_ERR "original: %pSR\n", (void *)gh2->gh_ip); - printk(KERN_ERR "pid: %d\n", pid_nr(gh2->gh_owner_pid)); - printk(KERN_ERR "lock type: %d req lock state : %d\n", + pr_err("original: %pSR\n", (void *)gh2->gh_ip); + pr_err("pid: %d\n", pid_nr(gh2->gh_owner_pid)); + pr_err("lock type: %d req lock state : %d\n", gh2->gh_gl->gl_name.ln_type, gh2->gh_state); - printk(KERN_ERR "new: %pSR\n", (void *)gh->gh_ip); - printk(KERN_ERR "pid: %d\n", pid_nr(gh->gh_owner_pid)); - printk(KERN_ERR "lock type: %d req lock state : %d\n", + pr_err("new: %pSR\n", (void *)gh->gh_ip); + pr_err("pid: %d\n", pid_nr(gh->gh_owner_pid)); + pr_err("lock type: %d req lock state : %d\n", gh->gh_gl->gl_name.ln_type, gh->gh_state); gfs2_dump_glock(NULL, gl); BUG(); @@ -1045,9 +1047,13 @@ int gfs2_glock_nq(struct gfs2_holder *gh) spin_lock(&gl->gl_spin); add_to_queue(gh); - if ((LM_FLAG_NOEXP & gh->gh_flags) && - test_and_clear_bit(GLF_FROZEN, &gl->gl_flags)) + if (unlikely((LM_FLAG_NOEXP & gh->gh_flags) && + test_and_clear_bit(GLF_FROZEN, &gl->gl_flags))) { set_bit(GLF_REPLY_PENDING, &gl->gl_flags); + gl->gl_lockref.count++; + if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0) + gl->gl_lockref.count--; + } run_queue(gl, 1); spin_unlock(&gl->gl_spin); @@ -1552,13 +1558,11 @@ void gfs2_glock_thaw(struct gfs2_sbd *sdp) glock_hash_walk(thaw_glock, sdp); } -static int dump_glock(struct seq_file *seq, struct gfs2_glock *gl) +static void dump_glock(struct seq_file *seq, struct gfs2_glock *gl) { - int ret; spin_lock(&gl->gl_spin); - ret = gfs2_dump_glock(seq, gl); + gfs2_dump_glock(seq, gl); spin_unlock(&gl->gl_spin); - return ret; } static void dump_glock_func(struct gfs2_glock *gl) @@ -1647,10 +1651,9 @@ static const char *hflags2str(char *buf, unsigned flags, unsigned long iflags) * @seq: the seq_file struct * @gh: the glock holder * - * Returns: 0 on success, -ENOBUFS when we run out of space */ -static int dump_holder(struct seq_file *seq, const struct gfs2_holder *gh) +static void dump_holder(struct seq_file *seq, const struct gfs2_holder *gh) { struct task_struct *gh_owner = NULL; char flags_buf[32]; @@ -1666,7 +1669,6 @@ static int dump_holder(struct seq_file *seq, const struct gfs2_holder *gh) gh_owner ? gh_owner->comm : "(ended)", (void *)gh->gh_ip); rcu_read_unlock(); - return 0; } static const char *gflags2str(char *buf, const struct gfs2_glock *gl) @@ -1721,16 +1723,14 @@ static const char *gflags2str(char *buf, const struct gfs2_glock *gl) * example. The field's are n = number (id of the object), f = flags, * t = type, s = state, r = refcount, e = error, p = pid. * - * Returns: 0 on success, -ENOBUFS when we run out of space */ -int gfs2_dump_glock(struct seq_file *seq, const struct gfs2_glock *gl) +void gfs2_dump_glock(struct seq_file *seq, const struct gfs2_glock *gl) { const struct gfs2_glock_operations *glops = gl->gl_ops; unsigned long long dtime; const struct gfs2_holder *gh; char gflags_buf[32]; - int error = 0; dtime = jiffies - gl->gl_demote_time; dtime *= 1000000/HZ; /* demote time in uSec */ @@ -1747,15 +1747,11 @@ int gfs2_dump_glock(struct seq_file *seq, const struct gfs2_glock *gl) atomic_read(&gl->gl_revokes), (int)gl->gl_lockref.count, gl->gl_hold_time); - list_for_each_entry(gh, &gl->gl_holders, gh_list) { - error = dump_holder(seq, gh); - if (error) - goto out; - } + list_for_each_entry(gh, &gl->gl_holders, gh_list) + dump_holder(seq, gh); + if (gl->gl_state != LM_ST_UNLOCKED && glops->go_dump) - error = glops->go_dump(seq, gl); -out: - return error; + glops->go_dump(seq, gl); } static int gfs2_glstats_seq_show(struct seq_file *seq, void *iter_ptr) @@ -1953,7 +1949,8 @@ static void gfs2_glock_seq_stop(struct seq_file *seq, void *iter_ptr) static int gfs2_glock_seq_show(struct seq_file *seq, void *iter_ptr) { - return dump_glock(seq, iter_ptr); + dump_glock(seq, iter_ptr); + return 0; } static void *gfs2_sbstats_seq_start(struct seq_file *seq, loff_t *pos) diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h index 6647d77366ba..32572f71f027 100644 --- a/fs/gfs2/glock.h +++ b/fs/gfs2/glock.h @@ -199,7 +199,7 @@ extern int gfs2_glock_nq_num(struct gfs2_sbd *sdp, u64 number, struct gfs2_holder *gh); extern int gfs2_glock_nq_m(unsigned int num_gh, struct gfs2_holder *ghs); extern void gfs2_glock_dq_m(unsigned int num_gh, struct gfs2_holder *ghs); -extern int gfs2_dump_glock(struct seq_file *seq, const struct gfs2_glock *gl); +extern void gfs2_dump_glock(struct seq_file *seq, const struct gfs2_glock *gl); #define GLOCK_BUG_ON(gl,x) do { if (unlikely(x)) { gfs2_dump_glock(NULL, gl); BUG(); } } while(0) extern __printf(2, 3) void gfs2_print_dbg(struct seq_file *seq, const char *fmt, ...); diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index f88dcd925010..54b66809e818 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -82,6 +82,8 @@ static void gfs2_ail_empty_gl(struct gfs2_glock *gl) struct gfs2_trans tr; memset(&tr, 0, sizeof(tr)); + INIT_LIST_HEAD(&tr.tr_buf); + INIT_LIST_HEAD(&tr.tr_databuf); tr.tr_revokes = atomic_read(&gl->gl_ail_count); if (!tr.tr_revokes) @@ -133,7 +135,8 @@ void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync) static void rgrp_go_sync(struct gfs2_glock *gl) { - struct address_space *metamapping = gfs2_glock2aspace(gl); + struct gfs2_sbd *sdp = gl->gl_sbd; + struct address_space *mapping = &sdp->sd_aspace; struct gfs2_rgrpd *rgd; int error; @@ -141,10 +144,10 @@ static void rgrp_go_sync(struct gfs2_glock *gl) return; GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE); - gfs2_log_flush(gl->gl_sbd, gl); - filemap_fdatawrite(metamapping); - error = filemap_fdatawait(metamapping); - mapping_set_error(metamapping, error); + gfs2_log_flush(sdp, gl); + filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end); + error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end); + mapping_set_error(mapping, error); gfs2_ail_empty_gl(gl); spin_lock(&gl->gl_spin); @@ -166,11 +169,12 @@ static void rgrp_go_sync(struct gfs2_glock *gl) static void rgrp_go_inval(struct gfs2_glock *gl, int flags) { - struct address_space *mapping = gfs2_glock2aspace(gl); + struct gfs2_sbd *sdp = gl->gl_sbd; + struct address_space *mapping = &sdp->sd_aspace; WARN_ON_ONCE(!(flags & DIO_METADATA)); - gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count)); - truncate_inode_pages(mapping, 0); + gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count)); + truncate_inode_pages_range(mapping, gl->gl_vm.start, gl->gl_vm.end); if (gl->gl_object) { struct gfs2_rgrpd *rgd = (struct gfs2_rgrpd *)gl->gl_object; @@ -435,21 +439,19 @@ static int inode_go_lock(struct gfs2_holder *gh) * @seq: The iterator * @ip: the inode * - * Returns: 0 on success, -ENOBUFS when we run out of space */ -static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl) +static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl) { const struct gfs2_inode *ip = gl->gl_object; if (ip == NULL) - return 0; + return; gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n", (unsigned long long)ip->i_no_formal_ino, (unsigned long long)ip->i_no_addr, IF2DT(ip->i_inode.i_mode), ip->i_flags, (unsigned int)ip->i_diskflags, (unsigned long long)i_size_read(&ip->i_inode)); - return 0; } /** @@ -558,7 +560,7 @@ const struct gfs2_glock_operations gfs2_rgrp_glops = { .go_unlock = gfs2_rgrp_go_unlock, .go_dump = gfs2_rgrp_dump, .go_type = LM_TYPE_RGRP, - .go_flags = GLOF_ASPACE | GLOF_LVB, + .go_flags = GLOF_LVB, }; const struct gfs2_glock_operations gfs2_trans_glops = { diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index ba1ea67f4eeb..bdf70c18610c 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -52,7 +52,7 @@ struct gfs2_log_header_host { */ struct gfs2_log_operations { - void (*lo_before_commit) (struct gfs2_sbd *sdp); + void (*lo_before_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr); void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr); void (*lo_before_scan) (struct gfs2_jdesc *jd, struct gfs2_log_header_host *head, int pass); @@ -93,6 +93,7 @@ struct gfs2_rgrpd { struct gfs2_rgrp_lvb *rd_rgl; u32 rd_last_alloc; u32 rd_flags; + u32 rd_extfail_pt; /* extent failure point */ #define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */ #define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */ #define GFS2_RDF_ERROR 0x40000000 /* error in rg */ @@ -217,7 +218,7 @@ struct gfs2_glock_operations { int (*go_demote_ok) (const struct gfs2_glock *gl); int (*go_lock) (struct gfs2_holder *gh); void (*go_unlock) (struct gfs2_holder *gh); - int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl); + void (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl); void (*go_callback)(struct gfs2_glock *gl, bool remote); const int go_type; const unsigned long go_flags; @@ -350,7 +351,15 @@ struct gfs2_glock { atomic_t gl_ail_count; atomic_t gl_revokes; struct delayed_work gl_work; - struct work_struct gl_delete; + union { + /* For inode and iopen glocks only */ + struct work_struct gl_delete; + /* For rgrp glocks only */ + struct { + loff_t start; + loff_t end; + } gl_vm; + }; struct rcu_head gl_rcu; }; @@ -362,6 +371,7 @@ enum { GIF_ALLOC_FAILED = 2, GIF_SW_PAGED = 3, GIF_ORDERED = 4, + GIF_FREE_VFS_INODE = 5, }; struct gfs2_inode { @@ -419,10 +429,13 @@ enum { }; struct gfs2_quota_data { + struct hlist_bl_node qd_hlist; struct list_head qd_list; struct kqid qd_id; + struct gfs2_sbd *qd_sbd; struct lockref qd_lockref; struct list_head qd_lru; + unsigned qd_hash; unsigned long qd_flags; /* QDF_... */ @@ -441,6 +454,7 @@ struct gfs2_quota_data { u64 qd_sync_gen; unsigned long qd_last_warn; + struct rcu_head qd_rcu; }; struct gfs2_trans { @@ -449,11 +463,11 @@ struct gfs2_trans { unsigned int tr_blocks; unsigned int tr_revokes; unsigned int tr_reserved; + unsigned int tr_touched:1; + unsigned int tr_attached:1; struct gfs2_holder tr_t_gh; - int tr_touched; - int tr_attached; unsigned int tr_num_buf_new; unsigned int tr_num_databuf_new; @@ -463,6 +477,8 @@ struct gfs2_trans { unsigned int tr_num_revoke_rm; struct list_head tr_list; + struct list_head tr_databuf; + struct list_head tr_buf; unsigned int tr_first; struct list_head tr_ail1_list; @@ -470,7 +486,7 @@ struct gfs2_trans { }; struct gfs2_journal_extent { - struct list_head extent_list; + struct list_head list; unsigned int lblock; /* First logical block */ u64 dblock; /* First disk block */ @@ -480,6 +496,7 @@ struct gfs2_journal_extent { struct gfs2_jdesc { struct list_head jd_list; struct list_head extent_list; + unsigned int nr_extents; struct work_struct jd_work; struct inode *jd_inode; unsigned long jd_flags; @@ -487,6 +504,15 @@ struct gfs2_jdesc { unsigned int jd_jid; unsigned int jd_blocks; int jd_recover_error; + /* Replay stuff */ + + unsigned int jd_found_blocks; + unsigned int jd_found_revokes; + unsigned int jd_replayed_blocks; + + struct list_head jd_revoke_list; + unsigned int jd_replay_tail; + }; struct gfs2_statfs_change_host { @@ -720,30 +746,25 @@ struct gfs2_sbd { spinlock_t sd_trunc_lock; unsigned int sd_quota_slots; - unsigned int sd_quota_chunks; - unsigned char **sd_quota_bitmap; + unsigned long *sd_quota_bitmap; + spinlock_t sd_bitmap_lock; u64 sd_quota_sync_gen; /* Log stuff */ + struct address_space sd_aspace; + spinlock_t sd_log_lock; struct gfs2_trans *sd_log_tr; unsigned int sd_log_blks_reserved; - unsigned int sd_log_commited_buf; - unsigned int sd_log_commited_databuf; int sd_log_commited_revoke; atomic_t sd_log_pinned; - unsigned int sd_log_num_buf; unsigned int sd_log_num_revoke; - unsigned int sd_log_num_rg; - unsigned int sd_log_num_databuf; - struct list_head sd_log_le_buf; struct list_head sd_log_le_revoke; - struct list_head sd_log_le_databuf; struct list_head sd_log_le_ordered; spinlock_t sd_ordered_lock; @@ -771,15 +792,6 @@ struct gfs2_sbd { struct list_head sd_ail1_list; struct list_head sd_ail2_list; - /* Replay stuff */ - - struct list_head sd_revoke_list; - unsigned int sd_replay_tail; - - unsigned int sd_found_blocks; - unsigned int sd_found_revokes; - unsigned int sd_replayed_blocks; - /* For quiescing the filesystem */ struct gfs2_holder sd_freeze_gh; diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 7119504159f1..28cc7bf6575a 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -149,7 +149,7 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type, ip = GFS2_I(inode); if (!inode) - return ERR_PTR(-ENOBUFS); + return ERR_PTR(-ENOMEM); if (inode->i_state & I_NEW) { struct gfs2_sbd *sdp = GFS2_SB(inode); @@ -376,12 +376,11 @@ static void munge_mode_uid_gid(const struct gfs2_inode *dip, inode->i_gid = current_fsgid(); } -static int alloc_dinode(struct gfs2_inode *ip, u32 flags) +static int alloc_dinode(struct gfs2_inode *ip, u32 flags, unsigned *dblocks) { struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); - struct gfs2_alloc_parms ap = { .target = RES_DINODE, .aflags = flags, }; + struct gfs2_alloc_parms ap = { .target = *dblocks, .aflags = flags, }; int error; - int dblocks = 1; error = gfs2_quota_lock_check(ip); if (error) @@ -391,11 +390,11 @@ static int alloc_dinode(struct gfs2_inode *ip, u32 flags) if (error) goto out_quota; - error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS + RES_QUOTA, 0); + error = gfs2_trans_begin(sdp, (*dblocks * RES_RG_BIT) + RES_STATFS + RES_QUOTA, 0); if (error) goto out_ipreserv; - error = gfs2_alloc_blocks(ip, &ip->i_no_addr, &dblocks, 1, &ip->i_generation); + error = gfs2_alloc_blocks(ip, &ip->i_no_addr, dblocks, 1, &ip->i_generation); ip->i_no_formal_ino = ip->i_generation; ip->i_inode.i_ino = ip->i_no_addr; ip->i_goal = ip->i_no_addr; @@ -428,6 +427,33 @@ static void gfs2_init_dir(struct buffer_head *dibh, } /** + * gfs2_init_xattr - Initialise an xattr block for a new inode + * @ip: The inode in question + * + * This sets up an empty xattr block for a new inode, ready to + * take any ACLs, LSM xattrs, etc. + */ + +static void gfs2_init_xattr(struct gfs2_inode *ip) +{ + struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); + struct buffer_head *bh; + struct gfs2_ea_header *ea; + + bh = gfs2_meta_new(ip->i_gl, ip->i_eattr); + gfs2_trans_add_meta(ip->i_gl, bh); + gfs2_metatype_set(bh, GFS2_METATYPE_EA, GFS2_FORMAT_EA); + gfs2_buffer_clear_tail(bh, sizeof(struct gfs2_meta_header)); + + ea = GFS2_EA_BH2FIRST(bh); + ea->ea_rec_len = cpu_to_be32(sdp->sd_jbsize); + ea->ea_type = GFS2_EATYPE_UNUSED; + ea->ea_flags = GFS2_EAFLAG_LAST; + + brelse(bh); +} + +/** * init_dinode - Fill in a new dinode structure * @dip: The directory this inode is being created in * @ip: The inode @@ -469,14 +495,36 @@ static void init_dinode(struct gfs2_inode *dip, struct gfs2_inode *ip, brelse(dibh); } +/** + * gfs2_trans_da_blocks - Calculate number of blocks to link inode + * @dip: The directory we are linking into + * @da: The dir add information + * @nr_inodes: The number of inodes involved + * + * This calculate the number of blocks we need to reserve in a + * transaction to link @nr_inodes into a directory. In most cases + * @nr_inodes will be 2 (the directory plus the inode being linked in) + * but in case of rename, 4 may be required. + * + * Returns: Number of blocks + */ + +static unsigned gfs2_trans_da_blks(const struct gfs2_inode *dip, + const struct gfs2_diradd *da, + unsigned nr_inodes) +{ + return da->nr_blocks + gfs2_rg_blocks(dip, da->nr_blocks) + + (nr_inodes * RES_DINODE) + RES_QUOTA + RES_STATFS; +} + static int link_dinode(struct gfs2_inode *dip, const struct qstr *name, - struct gfs2_inode *ip, int arq) + struct gfs2_inode *ip, struct gfs2_diradd *da) { struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); - struct gfs2_alloc_parms ap = { .target = sdp->sd_max_dirres, }; + struct gfs2_alloc_parms ap = { .target = da->nr_blocks, }; int error; - if (arq) { + if (da->nr_blocks) { error = gfs2_quota_lock_check(dip); if (error) goto fail_quota_locks; @@ -485,10 +533,7 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name, if (error) goto fail_quota_locks; - error = gfs2_trans_begin(sdp, sdp->sd_max_dirres + - dip->i_rgd->rd_length + - 2 * RES_DINODE + - RES_STATFS + RES_QUOTA, 0); + error = gfs2_trans_begin(sdp, gfs2_trans_da_blks(dip, da, 2), 0); if (error) goto fail_ipreserv; } else { @@ -497,7 +542,7 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name, goto fail_quota_locks; } - error = gfs2_dir_add(&dip->i_inode, name, ip); + error = gfs2_dir_add(&dip->i_inode, name, ip, da); if (error) goto fail_end_trans; @@ -526,13 +571,6 @@ static int gfs2_initxattrs(struct inode *inode, const struct xattr *xattr_array, return err; } -static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip, - const struct qstr *qstr) -{ - return security_inode_init_security(&ip->i_inode, &dip->i_inode, qstr, - &gfs2_initxattrs, NULL); -} - /** * gfs2_create_inode - Create a new inode * @dir: The parent directory @@ -552,15 +590,17 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, unsigned int size, int excl, int *opened) { const struct qstr *name = &dentry->d_name; + struct posix_acl *default_acl, *acl; struct gfs2_holder ghs[2]; struct inode *inode = NULL; struct gfs2_inode *dip = GFS2_I(dir), *ip; struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); struct gfs2_glock *io_gl; struct dentry *d; - int error; + int error, free_vfs_inode = 0; u32 aflags = 0; - int arq; + unsigned blocks = 1; + struct gfs2_diradd da = { .bh = NULL, }; if (!name->len || name->len > GFS2_FNAMESIZE) return -ENAMETOOLONG; @@ -585,6 +625,9 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, error = PTR_ERR(inode); if (!IS_ERR(inode)) { d = d_splice_alias(inode, dentry); + error = PTR_ERR(d); + if (IS_ERR(d)) + goto fail_gunlock; error = 0; if (file) { if (S_ISREG(inode->i_mode)) { @@ -602,7 +645,7 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, goto fail_gunlock; } - arq = error = gfs2_diradd_alloc_required(dir, name); + error = gfs2_diradd_alloc_required(dir, name, &da); if (error < 0) goto fail_gunlock; @@ -611,10 +654,14 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, if (!inode) goto fail_gunlock; + error = posix_acl_create(dir, &mode, &default_acl, &acl); + if (error) + goto fail_free_vfs_inode; + ip = GFS2_I(inode); error = gfs2_rs_alloc(ip); if (error) - goto fail_free_inode; + goto fail_free_acls; inode->i_mode = mode; set_nlink(inode, S_ISDIR(mode) ? 2 : 1); @@ -649,10 +696,15 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, (dip->i_diskflags & GFS2_DIF_TOPDIR)) aflags |= GFS2_AF_ORLOV; - error = alloc_dinode(ip, aflags); + if (default_acl || acl) + blocks++; + + error = alloc_dinode(ip, aflags, &blocks); if (error) goto fail_free_inode; + gfs2_set_inode_blocks(inode, blocks); + error = gfs2_glock_get(sdp, ip->i_no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl); if (error) goto fail_free_inode; @@ -662,10 +714,14 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, if (error) goto fail_free_inode; - error = gfs2_trans_begin(sdp, RES_DINODE, 0); + error = gfs2_trans_begin(sdp, blocks, 0); if (error) goto fail_gunlock2; + if (blocks > 1) { + ip->i_eattr = ip->i_no_addr + 1; + gfs2_init_xattr(ip); + } init_dinode(dip, ip, symname); gfs2_trans_end(sdp); @@ -682,15 +738,25 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, gfs2_set_iop(inode); insert_inode_hash(inode); - error = gfs2_acl_create(dip, inode); + if (default_acl) { + error = gfs2_set_acl(inode, default_acl, ACL_TYPE_DEFAULT); + posix_acl_release(default_acl); + } + if (acl) { + if (!error) + error = gfs2_set_acl(inode, acl, ACL_TYPE_ACCESS); + posix_acl_release(acl); + } + if (error) goto fail_gunlock3; - error = gfs2_security_init(dip, ip, name); + error = security_inode_init_security(&ip->i_inode, &dip->i_inode, name, + &gfs2_initxattrs, NULL); if (error) goto fail_gunlock3; - error = link_dinode(dip, name, ip, arq); + error = link_dinode(dip, name, ip, &da); if (error) goto fail_gunlock3; @@ -716,14 +782,22 @@ fail_free_inode: if (ip->i_gl) gfs2_glock_put(ip->i_gl); gfs2_rs_delete(ip, NULL); - free_inode_nonrcu(inode); - inode = NULL; +fail_free_acls: + if (default_acl) + posix_acl_release(default_acl); + if (acl) + posix_acl_release(acl); +fail_free_vfs_inode: + free_vfs_inode = 1; fail_gunlock: + gfs2_dir_no_add(&da); gfs2_glock_dq_uninit(ghs); if (inode && !IS_ERR(inode)) { clear_nlink(inode); - mark_inode_dirty(inode); - set_bit(GIF_ALLOC_FAILED, &GFS2_I(inode)->i_flags); + if (!free_vfs_inode) + mark_inode_dirty(inode); + set_bit(free_vfs_inode ? GIF_FREE_VFS_INODE : GIF_ALLOC_FAILED, + &GFS2_I(inode)->i_flags); iput(inode); } fail: @@ -779,6 +853,11 @@ static struct dentry *__gfs2_lookup(struct inode *dir, struct dentry *dentry, } d = d_splice_alias(inode, dentry); + if (IS_ERR(d)) { + iput(inode); + gfs2_glock_dq_uninit(&gh); + return d; + } if (file && S_ISREG(inode->i_mode)) error = finish_open(file, dentry, gfs2_open_common, opened); @@ -817,7 +896,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir, struct gfs2_inode *ip = GFS2_I(inode); struct gfs2_holder ghs[2]; struct buffer_head *dibh; - int alloc_required; + struct gfs2_diradd da = { .bh = NULL, }; int error; if (S_ISDIR(inode->i_mode)) @@ -872,13 +951,12 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir, if (ip->i_inode.i_nlink == (u32)-1) goto out_gunlock; - alloc_required = error = gfs2_diradd_alloc_required(dir, &dentry->d_name); + error = gfs2_diradd_alloc_required(dir, &dentry->d_name, &da); if (error < 0) goto out_gunlock; - error = 0; - if (alloc_required) { - struct gfs2_alloc_parms ap = { .target = sdp->sd_max_dirres, }; + if (da.nr_blocks) { + struct gfs2_alloc_parms ap = { .target = da.nr_blocks, }; error = gfs2_quota_lock_check(dip); if (error) goto out_gunlock; @@ -887,10 +965,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir, if (error) goto out_gunlock_q; - error = gfs2_trans_begin(sdp, sdp->sd_max_dirres + - gfs2_rg_blocks(dip, sdp->sd_max_dirres) + - 2 * RES_DINODE + RES_STATFS + - RES_QUOTA, 0); + error = gfs2_trans_begin(sdp, gfs2_trans_da_blks(dip, &da, 2), 0); if (error) goto out_ipres; } else { @@ -903,7 +978,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir, if (error) goto out_end_trans; - error = gfs2_dir_add(dir, &dentry->d_name, ip); + error = gfs2_dir_add(dir, &dentry->d_name, ip, &da); if (error) goto out_brelse; @@ -919,12 +994,13 @@ out_brelse: out_end_trans: gfs2_trans_end(sdp); out_ipres: - if (alloc_required) + if (da.nr_blocks) gfs2_inplace_release(dip); out_gunlock_q: - if (alloc_required) + if (da.nr_blocks) gfs2_quota_unlock(dip); out_gunlock: + gfs2_dir_no_add(&da); gfs2_glock_dq(ghs + 1); out_child: gfs2_glock_dq(ghs); @@ -1218,6 +1294,10 @@ static int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to) } tmp = gfs2_lookupi(dir, &gfs2_qdotdot, 1); + if (!tmp) { + error = -ENOENT; + break; + } if (IS_ERR(tmp)) { error = PTR_ERR(tmp); break; @@ -1254,7 +1334,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, struct gfs2_rgrpd *nrgd; unsigned int num_gh; int dir_rename = 0; - int alloc_required = 0; + struct gfs2_diradd da = { .nr_blocks = 0, }; unsigned int x; int error; @@ -1388,14 +1468,14 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, goto out_gunlock; } - if (nip == NULL) - alloc_required = gfs2_diradd_alloc_required(ndir, &ndentry->d_name); - error = alloc_required; - if (error < 0) - goto out_gunlock; + if (nip == NULL) { + error = gfs2_diradd_alloc_required(ndir, &ndentry->d_name, &da); + if (error) + goto out_gunlock; + } - if (alloc_required) { - struct gfs2_alloc_parms ap = { .target = sdp->sd_max_dirres, }; + if (da.nr_blocks) { + struct gfs2_alloc_parms ap = { .target = da.nr_blocks, }; error = gfs2_quota_lock_check(ndip); if (error) goto out_gunlock; @@ -1404,10 +1484,8 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, if (error) goto out_gunlock_q; - error = gfs2_trans_begin(sdp, sdp->sd_max_dirres + - gfs2_rg_blocks(ndip, sdp->sd_max_dirres) + - 4 * RES_DINODE + 4 * RES_LEAF + - RES_STATFS + RES_QUOTA + 4, 0); + error = gfs2_trans_begin(sdp, gfs2_trans_da_blks(ndip, &da, 4) + + 4 * RES_LEAF + 4, 0); if (error) goto out_ipreserv; } else { @@ -1441,19 +1519,20 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry, if (error) goto out_end_trans; - error = gfs2_dir_add(ndir, &ndentry->d_name, ip); + error = gfs2_dir_add(ndir, &ndentry->d_name, ip, &da); if (error) goto out_end_trans; out_end_trans: gfs2_trans_end(sdp); out_ipreserv: - if (alloc_required) + if (da.nr_blocks) gfs2_inplace_release(ndip); out_gunlock_q: - if (alloc_required) + if (da.nr_blocks) gfs2_quota_unlock(ndip); out_gunlock: + gfs2_dir_no_add(&da); while (x--) { gfs2_glock_dq(ghs + x); gfs2_holder_uninit(ghs + x); @@ -1607,10 +1686,22 @@ static int setattr_chown(struct inode *inode, struct iattr *attr) if (!(attr->ia_valid & ATTR_GID) || gid_eq(ogid, ngid)) ogid = ngid = NO_GID_QUOTA_CHANGE; - error = gfs2_quota_lock(ip, nuid, ngid); + error = get_write_access(inode); if (error) return error; + error = gfs2_rs_alloc(ip); + if (error) + goto out; + + error = gfs2_rindex_update(sdp); + if (error) + goto out; + + error = gfs2_quota_lock(ip, nuid, ngid); + if (error) + goto out; + if (!uid_eq(ouid, NO_UID_QUOTA_CHANGE) || !gid_eq(ogid, NO_GID_QUOTA_CHANGE)) { error = gfs2_quota_check(ip, nuid, ngid); @@ -1637,6 +1728,8 @@ out_end_trans: gfs2_trans_end(sdp); out_gunlock_q: gfs2_quota_unlock(ip); +out: + put_write_access(inode); return error; } @@ -1678,10 +1771,11 @@ static int gfs2_setattr(struct dentry *dentry, struct iattr *attr) error = gfs2_setattr_size(inode, attr->ia_size); else if (attr->ia_valid & (ATTR_UID | ATTR_GID)) error = setattr_chown(inode, attr); - else if ((attr->ia_valid & ATTR_MODE) && IS_POSIXACL(inode)) - error = gfs2_acl_chmod(ip, attr); - else + else { error = gfs2_setattr_simple(inode, attr); + if (!error && attr->ia_valid & ATTR_MODE) + error = posix_acl_chmod(inode, inode->i_mode); + } out: if (!error) @@ -1841,6 +1935,7 @@ const struct inode_operations gfs2_file_iops = { .removexattr = gfs2_removexattr, .fiemap = gfs2_fiemap, .get_acl = gfs2_get_acl, + .set_acl = gfs2_set_acl, }; const struct inode_operations gfs2_dir_iops = { @@ -1862,6 +1957,7 @@ const struct inode_operations gfs2_dir_iops = { .removexattr = gfs2_removexattr, .fiemap = gfs2_fiemap, .get_acl = gfs2_get_acl, + .set_acl = gfs2_set_acl, .atomic_open = gfs2_atomic_open, }; @@ -1877,6 +1973,5 @@ const struct inode_operations gfs2_symlink_iops = { .listxattr = gfs2_listxattr, .removexattr = gfs2_removexattr, .fiemap = gfs2_fiemap, - .get_acl = gfs2_get_acl, }; diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c index 2a6ba06bee6f..c1eb555dc588 100644 --- a/fs/gfs2/lock_dlm.c +++ b/fs/gfs2/lock_dlm.c @@ -7,6 +7,8 @@ * of the GNU General Public License version 2. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/fs.h> #include <linux/dlm.h> #include <linux/slab.h> @@ -176,7 +178,7 @@ static void gdlm_bast(void *arg, int mode) gfs2_glock_cb(gl, LM_ST_SHARED); break; default: - printk(KERN_ERR "unknown bast mode %d", mode); + pr_err("unknown bast mode %d\n", mode); BUG(); } } @@ -195,7 +197,7 @@ static int make_mode(const unsigned int lmstate) case LM_ST_SHARED: return DLM_LOCK_PR; } - printk(KERN_ERR "unknown LM state %d", lmstate); + pr_err("unknown LM state %d\n", lmstate); BUG(); return -1; } @@ -308,7 +310,7 @@ static void gdlm_put_lock(struct gfs2_glock *gl) error = dlm_unlock(ls->ls_dlm, gl->gl_lksb.sb_lkid, DLM_LKF_VALBLK, NULL, gl); if (error) { - printk(KERN_ERR "gdlm_unlock %x,%llx err=%d\n", + pr_err("gdlm_unlock %x,%llx err=%d\n", gl->gl_name.ln_type, (unsigned long long)gl->gl_name.ln_number, error); return; @@ -1102,7 +1104,7 @@ static void gdlm_recover_slot(void *arg, struct dlm_slot *slot) } if (ls->ls_recover_submit[jid]) { - fs_info(sdp, "recover_slot jid %d gen %u prev %u", + fs_info(sdp, "recover_slot jid %d gen %u prev %u\n", jid, ls->ls_recover_block, ls->ls_recover_submit[jid]); } ls->ls_recover_submit[jid] = ls->ls_recover_block; diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index 9dcb9777a5f8..4a14d504ef83 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -18,6 +18,7 @@ #include <linux/kthread.h> #include <linux/freezer.h> #include <linux/bio.h> +#include <linux/blkdev.h> #include <linux/writeback.h> #include <linux/list_sort.h> @@ -145,8 +146,10 @@ void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc) { struct list_head *head = &sdp->sd_ail1_list; struct gfs2_trans *tr; + struct blk_plug plug; trace_gfs2_ail_flush(sdp, wbc, 1); + blk_start_plug(&plug); spin_lock(&sdp->sd_ail_lock); restart: list_for_each_entry_reverse(tr, head, tr_list) { @@ -156,6 +159,7 @@ restart: goto restart; } spin_unlock(&sdp->sd_ail_lock); + blk_finish_plug(&plug); trace_gfs2_ail_flush(sdp, wbc, 0); } @@ -410,24 +414,22 @@ static inline unsigned int log_distance(struct gfs2_sbd *sdp, unsigned int newer static unsigned int calc_reserved(struct gfs2_sbd *sdp) { unsigned int reserved = 0; - unsigned int mbuf_limit, metabufhdrs_needed; - unsigned int dbuf_limit, databufhdrs_needed; - unsigned int revokes = 0; + unsigned int mbuf; + unsigned int dbuf; + struct gfs2_trans *tr = sdp->sd_log_tr; - mbuf_limit = buf_limit(sdp); - metabufhdrs_needed = (sdp->sd_log_commited_buf + - (mbuf_limit - 1)) / mbuf_limit; - dbuf_limit = databuf_limit(sdp); - databufhdrs_needed = (sdp->sd_log_commited_databuf + - (dbuf_limit - 1)) / dbuf_limit; + if (tr) { + mbuf = tr->tr_num_buf_new - tr->tr_num_buf_rm; + dbuf = tr->tr_num_databuf_new - tr->tr_num_databuf_rm; + reserved = mbuf + dbuf; + /* Account for header blocks */ + reserved += DIV_ROUND_UP(mbuf, buf_limit(sdp)); + reserved += DIV_ROUND_UP(dbuf, databuf_limit(sdp)); + } if (sdp->sd_log_commited_revoke > 0) - revokes = gfs2_struct2blk(sdp, sdp->sd_log_commited_revoke, + reserved += gfs2_struct2blk(sdp, sdp->sd_log_commited_revoke, sizeof(u64)); - - reserved = sdp->sd_log_commited_buf + metabufhdrs_needed + - sdp->sd_log_commited_databuf + databufhdrs_needed + - revokes; /* One for the overall header */ if (reserved) reserved++; @@ -682,36 +684,25 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl) } trace_gfs2_log_flush(sdp, 1); + sdp->sd_log_flush_head = sdp->sd_log_head; + sdp->sd_log_flush_wrapped = 0; tr = sdp->sd_log_tr; if (tr) { sdp->sd_log_tr = NULL; INIT_LIST_HEAD(&tr->tr_ail1_list); INIT_LIST_HEAD(&tr->tr_ail2_list); + tr->tr_first = sdp->sd_log_flush_head; } - if (sdp->sd_log_num_buf != sdp->sd_log_commited_buf) { - printk(KERN_INFO "GFS2: log buf %u %u\n", sdp->sd_log_num_buf, - sdp->sd_log_commited_buf); - gfs2_assert_withdraw(sdp, 0); - } - if (sdp->sd_log_num_databuf != sdp->sd_log_commited_databuf) { - printk(KERN_INFO "GFS2: log databuf %u %u\n", - sdp->sd_log_num_databuf, sdp->sd_log_commited_databuf); - gfs2_assert_withdraw(sdp, 0); - } gfs2_assert_withdraw(sdp, sdp->sd_log_num_revoke == sdp->sd_log_commited_revoke); - sdp->sd_log_flush_head = sdp->sd_log_head; - sdp->sd_log_flush_wrapped = 0; - if (tr) - tr->tr_first = sdp->sd_log_flush_head; - gfs2_ordered_write(sdp); - lops_before_commit(sdp); + lops_before_commit(sdp, tr); gfs2_log_flush_bio(sdp, WRITE); if (sdp->sd_log_head != sdp->sd_log_flush_head) { + log_flush_wait(sdp); log_write_header(sdp, 0); } else if (sdp->sd_log_tail != current_tail(sdp) && !sdp->sd_log_idle){ atomic_dec(&sdp->sd_log_blks_free); /* Adjust for unreserved buffer */ @@ -723,8 +714,6 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl) gfs2_log_lock(sdp); sdp->sd_log_head = sdp->sd_log_flush_head; sdp->sd_log_blks_reserved = 0; - sdp->sd_log_commited_buf = 0; - sdp->sd_log_commited_databuf = 0; sdp->sd_log_commited_revoke = 0; spin_lock(&sdp->sd_ail_lock); @@ -740,34 +729,54 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl) kfree(tr); } +/** + * gfs2_merge_trans - Merge a new transaction into a cached transaction + * @old: Original transaction to be expanded + * @new: New transaction to be merged + */ + +static void gfs2_merge_trans(struct gfs2_trans *old, struct gfs2_trans *new) +{ + WARN_ON_ONCE(old->tr_attached != 1); + + old->tr_num_buf_new += new->tr_num_buf_new; + old->tr_num_databuf_new += new->tr_num_databuf_new; + old->tr_num_buf_rm += new->tr_num_buf_rm; + old->tr_num_databuf_rm += new->tr_num_databuf_rm; + old->tr_num_revoke += new->tr_num_revoke; + old->tr_num_revoke_rm += new->tr_num_revoke_rm; + + list_splice_tail_init(&new->tr_databuf, &old->tr_databuf); + list_splice_tail_init(&new->tr_buf, &old->tr_buf); +} + static void log_refund(struct gfs2_sbd *sdp, struct gfs2_trans *tr) { unsigned int reserved; unsigned int unused; + unsigned int maxres; gfs2_log_lock(sdp); - sdp->sd_log_commited_buf += tr->tr_num_buf_new - tr->tr_num_buf_rm; - sdp->sd_log_commited_databuf += tr->tr_num_databuf_new - - tr->tr_num_databuf_rm; - gfs2_assert_withdraw(sdp, (((int)sdp->sd_log_commited_buf) >= 0) || - (((int)sdp->sd_log_commited_databuf) >= 0)); + if (sdp->sd_log_tr) { + gfs2_merge_trans(sdp->sd_log_tr, tr); + } else if (tr->tr_num_buf_new || tr->tr_num_databuf_new) { + gfs2_assert_withdraw(sdp, tr->tr_t_gh.gh_gl); + sdp->sd_log_tr = tr; + tr->tr_attached = 1; + } + sdp->sd_log_commited_revoke += tr->tr_num_revoke - tr->tr_num_revoke_rm; reserved = calc_reserved(sdp); - gfs2_assert_withdraw(sdp, sdp->sd_log_blks_reserved + tr->tr_reserved >= reserved); - unused = sdp->sd_log_blks_reserved - reserved + tr->tr_reserved; + maxres = sdp->sd_log_blks_reserved + tr->tr_reserved; + gfs2_assert_withdraw(sdp, maxres >= reserved); + unused = maxres - reserved; atomic_add(unused, &sdp->sd_log_blks_free); trace_gfs2_log_blocks(sdp, unused); gfs2_assert_withdraw(sdp, atomic_read(&sdp->sd_log_blks_free) <= sdp->sd_jdesc->jd_blocks); sdp->sd_log_blks_reserved = reserved; - if (sdp->sd_log_tr == NULL && - (tr->tr_num_buf_new || tr->tr_num_databuf_new)) { - gfs2_assert_withdraw(sdp, tr->tr_t_gh.gh_gl); - sdp->sd_log_tr = tr; - tr->tr_attached = 1; - } gfs2_log_unlock(sdp); } @@ -807,10 +816,7 @@ void gfs2_log_shutdown(struct gfs2_sbd *sdp) down_write(&sdp->sd_log_flush_lock); gfs2_assert_withdraw(sdp, !sdp->sd_log_blks_reserved); - gfs2_assert_withdraw(sdp, !sdp->sd_log_num_buf); gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); - gfs2_assert_withdraw(sdp, !sdp->sd_log_num_rg); - gfs2_assert_withdraw(sdp, !sdp->sd_log_num_databuf); gfs2_assert_withdraw(sdp, list_empty(&sdp->sd_ail1_list)); sdp->sd_log_flush_head = sdp->sd_log_head; diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c index 010b9fb9fec6..a294d8d8bcd4 100644 --- a/fs/gfs2/lops.c +++ b/fs/gfs2/lops.c @@ -83,6 +83,7 @@ static void maybe_release_space(struct gfs2_bufdata *bd) bd->bd_bh->b_data + bi->bi_offset, bi->bi_len); clear_bit(GBF_FULL, &bi->bi_flags); rgd->rd_free_clone = rgd->rd_free; + rgd->rd_extfail_pt = rgd->rd_free; } /** @@ -145,8 +146,8 @@ static u64 gfs2_log_bmap(struct gfs2_sbd *sdp) struct gfs2_journal_extent *je; u64 block; - list_for_each_entry(je, &sdp->sd_jdesc->extent_list, extent_list) { - if (lbn >= je->lblock && lbn < je->lblock + je->blocks) { + list_for_each_entry(je, &sdp->sd_jdesc->extent_list, list) { + if ((lbn >= je->lblock) && (lbn < (je->lblock + je->blocks))) { block = je->dblock + lbn - je->lblock; gfs2_log_incr_head(sdp); return block; @@ -272,7 +273,7 @@ static struct bio *gfs2_log_alloc_bio(struct gfs2_sbd *sdp, u64 blkno) nrvecs = max(nrvecs/2, 1U); } - bio->bi_sector = blkno * (sb->s_blocksize >> 9); + bio->bi_iter.bi_sector = blkno * (sb->s_blocksize >> 9); bio->bi_bdev = sb->s_bdev; bio->bi_end_io = gfs2_end_log_write; bio->bi_private = sdp; @@ -490,44 +491,40 @@ static void gfs2_before_commit(struct gfs2_sbd *sdp, unsigned int limit, gfs2_log_unlock(sdp); } -static void buf_lo_before_commit(struct gfs2_sbd *sdp) +static void buf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) { unsigned int limit = buf_limit(sdp); /* 503 for 4k blocks */ - - gfs2_before_commit(sdp, limit, sdp->sd_log_num_buf, - &sdp->sd_log_le_buf, 0); + unsigned int nbuf; + if (tr == NULL) + return; + nbuf = tr->tr_num_buf_new - tr->tr_num_buf_rm; + gfs2_before_commit(sdp, limit, nbuf, &tr->tr_buf, 0); } static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) { - struct list_head *head = &sdp->sd_log_le_buf; + struct list_head *head; struct gfs2_bufdata *bd; - if (tr == NULL) { - gfs2_assert(sdp, list_empty(head)); + if (tr == NULL) return; - } + head = &tr->tr_buf; while (!list_empty(head)) { bd = list_entry(head->next, struct gfs2_bufdata, bd_list); list_del_init(&bd->bd_list); - sdp->sd_log_num_buf--; - gfs2_unpin(sdp, bd->bd_bh, tr); } - gfs2_assert_warn(sdp, !sdp->sd_log_num_buf); } static void buf_lo_before_scan(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head, int pass) { - struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); - if (pass != 0) return; - sdp->sd_found_blocks = 0; - sdp->sd_replayed_blocks = 0; + jd->jd_found_blocks = 0; + jd->jd_replayed_blocks = 0; } static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, @@ -550,9 +547,9 @@ static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { blkno = be64_to_cpu(*ptr++); - sdp->sd_found_blocks++; + jd->jd_found_blocks++; - if (gfs2_revoke_check(sdp, blkno, start)) + if (gfs2_revoke_check(jd, blkno, start)) continue; error = gfs2_replay_read_block(jd, start, &bh_log); @@ -573,7 +570,7 @@ static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, if (error) break; - sdp->sd_replayed_blocks++; + jd->jd_replayed_blocks++; } return error; @@ -588,8 +585,12 @@ static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, static void gfs2_meta_sync(struct gfs2_glock *gl) { struct address_space *mapping = gfs2_glock2aspace(gl); + struct gfs2_sbd *sdp = gl->gl_sbd; int error; + if (mapping == NULL) + mapping = &sdp->sd_aspace; + filemap_fdatawrite(mapping); error = filemap_fdatawait(mapping); @@ -612,10 +613,10 @@ static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) gfs2_meta_sync(ip->i_gl); fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", - jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); + jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); } -static void revoke_lo_before_commit(struct gfs2_sbd *sdp) +static void revoke_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) { struct gfs2_meta_header *mh; unsigned int offset; @@ -674,13 +675,11 @@ static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) static void revoke_lo_before_scan(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head, int pass) { - struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); - if (pass != 0) return; - sdp->sd_found_revokes = 0; - sdp->sd_replay_tail = head->lh_tail; + jd->jd_found_revokes = 0; + jd->jd_replay_tail = head->lh_tail; } static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, @@ -712,13 +711,13 @@ static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); - error = gfs2_revoke_add(sdp, blkno, start); + error = gfs2_revoke_add(jd, blkno, start); if (error < 0) { brelse(bh); return error; } else if (error) - sdp->sd_found_revokes++; + jd->jd_found_revokes++; if (!--revokes) break; @@ -738,16 +737,16 @@ static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); if (error) { - gfs2_revoke_clean(sdp); + gfs2_revoke_clean(jd); return; } if (pass != 1) return; fs_info(sdp, "jid=%u: Found %u revoke tags\n", - jd->jd_jid, sdp->sd_found_revokes); + jd->jd_jid, jd->jd_found_revokes); - gfs2_revoke_clean(sdp); + gfs2_revoke_clean(jd); } /** @@ -755,12 +754,14 @@ static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) * */ -static void databuf_lo_before_commit(struct gfs2_sbd *sdp) +static void databuf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) { - unsigned int limit = buf_limit(sdp) / 2; - - gfs2_before_commit(sdp, limit, sdp->sd_log_num_databuf, - &sdp->sd_log_le_databuf, 1); + unsigned int limit = databuf_limit(sdp); + unsigned int nbuf; + if (tr == NULL) + return; + nbuf = tr->tr_num_databuf_new - tr->tr_num_databuf_rm; + gfs2_before_commit(sdp, limit, nbuf, &tr->tr_databuf, 1); } static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, @@ -784,9 +785,9 @@ static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, blkno = be64_to_cpu(*ptr++); esc = be64_to_cpu(*ptr++); - sdp->sd_found_blocks++; + jd->jd_found_blocks++; - if (gfs2_revoke_check(sdp, blkno, start)) + if (gfs2_revoke_check(jd, blkno, start)) continue; error = gfs2_replay_read_block(jd, start, &bh_log); @@ -806,7 +807,7 @@ static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, brelse(bh_log); brelse(bh_ip); - sdp->sd_replayed_blocks++; + jd->jd_replayed_blocks++; } return error; @@ -830,26 +831,23 @@ static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) gfs2_meta_sync(ip->i_gl); fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", - jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); + jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); } static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) { - struct list_head *head = &sdp->sd_log_le_databuf; + struct list_head *head; struct gfs2_bufdata *bd; - if (tr == NULL) { - gfs2_assert(sdp, list_empty(head)); + if (tr == NULL) return; - } + head = &tr->tr_databuf; while (!list_empty(head)) { bd = list_entry(head->next, struct gfs2_bufdata, bd_list); list_del_init(&bd->bd_list); - sdp->sd_log_num_databuf--; gfs2_unpin(sdp, bd->bd_bh, tr); } - gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf); } diff --git a/fs/gfs2/lops.h b/fs/gfs2/lops.h index 9ca2e6438419..a65a7ba32ffd 100644 --- a/fs/gfs2/lops.h +++ b/fs/gfs2/lops.h @@ -46,12 +46,13 @@ static inline unsigned int databuf_limit(struct gfs2_sbd *sdp) return limit; } -static inline void lops_before_commit(struct gfs2_sbd *sdp) +static inline void lops_before_commit(struct gfs2_sbd *sdp, + struct gfs2_trans *tr) { int x; for (x = 0; gfs2_log_ops[x]; x++) if (gfs2_log_ops[x]->lo_before_commit) - gfs2_log_ops[x]->lo_before_commit(sdp); + gfs2_log_ops[x]->lo_before_commit(sdp, tr); } static inline void lops_after_commit(struct gfs2_sbd *sdp, diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c index 0650db2541ef..82b6ac829656 100644 --- a/fs/gfs2/main.c +++ b/fs/gfs2/main.c @@ -7,6 +7,8 @@ * of the GNU General Public License version 2. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/completion.h> @@ -76,6 +78,7 @@ static int __init init_gfs2_fs(void) gfs2_str2qstr(&gfs2_qdot, "."); gfs2_str2qstr(&gfs2_qdotdot, ".."); + gfs2_quota_hash_init(); error = gfs2_sys_init(); if (error) @@ -164,7 +167,7 @@ static int __init init_gfs2_fs(void) gfs2_register_debugfs(); - printk("GFS2 installed\n"); + pr_info("GFS2 installed\n"); return 0; diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c index 52f177be3bf8..2cf09b63a6b4 100644 --- a/fs/gfs2/meta_io.c +++ b/fs/gfs2/meta_io.c @@ -97,6 +97,11 @@ const struct address_space_operations gfs2_meta_aops = { .releasepage = gfs2_releasepage, }; +const struct address_space_operations gfs2_rgrp_aops = { + .writepage = gfs2_aspace_writepage, + .releasepage = gfs2_releasepage, +}; + /** * gfs2_getbuf - Get a buffer with a given address space * @gl: the glock @@ -116,6 +121,9 @@ struct buffer_head *gfs2_getbuf(struct gfs2_glock *gl, u64 blkno, int create) unsigned long index; unsigned int bufnum; + if (mapping == NULL) + mapping = &sdp->sd_aspace; + shift = PAGE_CACHE_SHIFT - sdp->sd_sb.sb_bsize_shift; index = blkno >> shift; /* convert block to page */ bufnum = blkno - (index << shift); /* block buf index within page */ @@ -264,15 +272,10 @@ void gfs2_remove_from_journal(struct buffer_head *bh, struct gfs2_trans *tr, int trace_gfs2_pin(bd, 0); atomic_dec(&sdp->sd_log_pinned); list_del_init(&bd->bd_list); - if (meta) { - gfs2_assert_warn(sdp, sdp->sd_log_num_buf); - sdp->sd_log_num_buf--; + if (meta) tr->tr_num_buf_rm++; - } else { - gfs2_assert_warn(sdp, sdp->sd_log_num_databuf); - sdp->sd_log_num_databuf--; + else tr->tr_num_databuf_rm++; - } tr->tr_touched = 1; was_pinned = 1; brelse(bh); diff --git a/fs/gfs2/meta_io.h b/fs/gfs2/meta_io.h index 4823b934208a..ac5d8027d335 100644 --- a/fs/gfs2/meta_io.h +++ b/fs/gfs2/meta_io.h @@ -38,12 +38,15 @@ static inline void gfs2_buffer_copy_tail(struct buffer_head *to_bh, } extern const struct address_space_operations gfs2_meta_aops; +extern const struct address_space_operations gfs2_rgrp_aops; static inline struct gfs2_sbd *gfs2_mapping2sbd(struct address_space *mapping) { struct inode *inode = mapping->host; if (mapping->a_ops == &gfs2_meta_aops) return (((struct gfs2_glock *)mapping) - 1)->gl_sbd; + else if (mapping->a_ops == &gfs2_rgrp_aops) + return container_of(mapping, struct gfs2_sbd, sd_aspace); else return inode->i_sb->s_fs_info; } diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index 52fa88314f5c..22f954051bb8 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -7,6 +7,8 @@ * of the GNU General Public License version 2. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/sched.h> #include <linux/slab.h> #include <linux/spinlock.h> @@ -36,6 +38,7 @@ #include "log.h" #include "quota.h" #include "dir.h" +#include "meta_io.h" #include "trace_gfs2.h" #define DO 0 @@ -62,6 +65,7 @@ static void gfs2_tune_init(struct gfs2_tune *gt) static struct gfs2_sbd *init_sbd(struct super_block *sb) { struct gfs2_sbd *sdp; + struct address_space *mapping; sdp = kzalloc(sizeof(struct gfs2_sbd), GFP_KERNEL); if (!sdp) @@ -97,12 +101,22 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb) init_waitqueue_head(&sdp->sd_quota_wait); INIT_LIST_HEAD(&sdp->sd_trunc_list); spin_lock_init(&sdp->sd_trunc_lock); + spin_lock_init(&sdp->sd_bitmap_lock); + + mapping = &sdp->sd_aspace; + + address_space_init_once(mapping); + mapping->a_ops = &gfs2_rgrp_aops; + mapping->host = sb->s_bdev->bd_inode; + mapping->flags = 0; + mapping_set_gfp_mask(mapping, GFP_NOFS); + mapping->private_data = NULL; + mapping->backing_dev_info = sb->s_bdi; + mapping->writeback_index = 0; spin_lock_init(&sdp->sd_log_lock); atomic_set(&sdp->sd_log_pinned, 0); - INIT_LIST_HEAD(&sdp->sd_log_le_buf); INIT_LIST_HEAD(&sdp->sd_log_le_revoke); - INIT_LIST_HEAD(&sdp->sd_log_le_databuf); INIT_LIST_HEAD(&sdp->sd_log_le_ordered); spin_lock_init(&sdp->sd_ordered_lock); @@ -116,8 +130,6 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb) atomic_set(&sdp->sd_log_in_flight, 0); init_waitqueue_head(&sdp->sd_log_flush_wait); - INIT_LIST_HEAD(&sdp->sd_revoke_list); - return sdp; } @@ -140,7 +152,7 @@ static int gfs2_check_sb(struct gfs2_sbd *sdp, int silent) if (sb->sb_magic != GFS2_MAGIC || sb->sb_type != GFS2_METATYPE_SB) { if (!silent) - printk(KERN_WARNING "GFS2: not a GFS2 filesystem\n"); + pr_warn("not a GFS2 filesystem\n"); return -EINVAL; } @@ -162,7 +174,7 @@ static void end_bio_io_page(struct bio *bio, int error) if (!error) SetPageUptodate(page); else - printk(KERN_WARNING "gfs2: error %d reading superblock\n", error); + pr_warn("error %d reading superblock\n", error); unlock_page(page); } @@ -217,14 +229,14 @@ static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector, int silent) page = alloc_page(GFP_NOFS); if (unlikely(!page)) - return -ENOBUFS; + return -ENOMEM; ClearPageUptodate(page); ClearPageDirty(page); lock_page(page); bio = bio_alloc(GFP_NOFS, 1); - bio->bi_sector = sector * (sb->s_blocksize >> 9); + bio->bi_iter.bi_sector = sector * (sb->s_blocksize >> 9); bio->bi_bdev = sb->s_bdev; bio_add_page(bio, page, PAGE_SIZE, 0); @@ -505,67 +517,6 @@ out: return ret; } -/** - * map_journal_extents - create a reusable "extent" mapping from all logical - * blocks to all physical blocks for the given journal. This will save - * us time when writing journal blocks. Most journals will have only one - * extent that maps all their logical blocks. That's because gfs2.mkfs - * arranges the journal blocks sequentially to maximize performance. - * So the extent would map the first block for the entire file length. - * However, gfs2_jadd can happen while file activity is happening, so - * those journals may not be sequential. Less likely is the case where - * the users created their own journals by mounting the metafs and - * laying it out. But it's still possible. These journals might have - * several extents. - * - * TODO: This should be done in bigger chunks rather than one block at a time, - * but since it's only done at mount time, I'm not worried about the - * time it takes. - */ -static int map_journal_extents(struct gfs2_sbd *sdp) -{ - struct gfs2_jdesc *jd = sdp->sd_jdesc; - unsigned int lb; - u64 db, prev_db; /* logical block, disk block, prev disk block */ - struct gfs2_inode *ip = GFS2_I(jd->jd_inode); - struct gfs2_journal_extent *jext = NULL; - struct buffer_head bh; - int rc = 0; - - prev_db = 0; - - for (lb = 0; lb < i_size_read(jd->jd_inode) >> sdp->sd_sb.sb_bsize_shift; lb++) { - bh.b_state = 0; - bh.b_blocknr = 0; - bh.b_size = 1 << ip->i_inode.i_blkbits; - rc = gfs2_block_map(jd->jd_inode, lb, &bh, 0); - db = bh.b_blocknr; - if (rc || !db) { - printk(KERN_INFO "GFS2 journal mapping error %d: lb=" - "%u db=%llu\n", rc, lb, (unsigned long long)db); - break; - } - if (!prev_db || db != prev_db + 1) { - jext = kzalloc(sizeof(struct gfs2_journal_extent), - GFP_KERNEL); - if (!jext) { - printk(KERN_INFO "GFS2 error: out of memory " - "mapping journal extents.\n"); - rc = -ENOMEM; - break; - } - jext->dblock = db; - jext->lblock = lb; - jext->blocks = 1; - list_add_tail(&jext->extent_list, &jd->extent_list); - } else { - jext->blocks++; - } - prev_db = db; - } - return rc; -} - static void gfs2_others_may_mount(struct gfs2_sbd *sdp) { char *message = "FIRSTMOUNT=Done"; @@ -624,6 +575,8 @@ static int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh) break; INIT_LIST_HEAD(&jd->extent_list); + INIT_LIST_HEAD(&jd->jd_revoke_list); + INIT_WORK(&jd->jd_work, gfs2_recover_func); jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1); if (!jd->jd_inode || IS_ERR(jd->jd_inode)) { @@ -767,7 +720,7 @@ static int init_journal(struct gfs2_sbd *sdp, int undo) atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); /* Map the extents for this journal's blocks */ - map_journal_extents(sdp); + gfs2_map_journal_extents(sdp, sdp->sd_jdesc); } trace_gfs2_log_blocks(sdp, atomic_read(&sdp->sd_log_blks_free)); @@ -956,40 +909,6 @@ fail: return error; } -static int init_threads(struct gfs2_sbd *sdp, int undo) -{ - struct task_struct *p; - int error = 0; - - if (undo) - goto fail_quotad; - - p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); - if (IS_ERR(p)) { - error = PTR_ERR(p); - fs_err(sdp, "can't start logd thread: %d\n", error); - return error; - } - sdp->sd_logd_process = p; - - p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); - if (IS_ERR(p)) { - error = PTR_ERR(p); - fs_err(sdp, "can't start quotad thread: %d\n", error); - goto fail; - } - sdp->sd_quotad_process = p; - - return 0; - - -fail_quotad: - kthread_stop(sdp->sd_quotad_process); -fail: - kthread_stop(sdp->sd_logd_process); - return error; -} - static const match_table_t nolock_tokens = { { Opt_jid, "jid=%d\n", }, { Opt_err, NULL }, @@ -1028,7 +947,7 @@ static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent) lm = &gfs2_dlm_ops; #endif } else { - printk(KERN_INFO "GFS2: can't find protocol %s\n", proto); + pr_info("can't find protocol %s\n", proto); return -ENOENT; } @@ -1135,7 +1054,7 @@ static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent sdp = init_sbd(sb); if (!sdp) { - printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n"); + pr_warn("can't alloc struct gfs2_sbd\n"); return -ENOMEM; } sdp->sd_args = *args; @@ -1254,15 +1173,11 @@ static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent goto fail_per_node; } - error = init_threads(sdp, DO); - if (error) - goto fail_per_node; - if (!(sb->s_flags & MS_RDONLY)) { error = gfs2_make_fs_rw(sdp); if (error) { fs_err(sdp, "can't make FS RW: %d\n", error); - goto fail_threads; + goto fail_per_node; } } @@ -1270,8 +1185,6 @@ static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent gfs2_online_uevent(sdp); return 0; -fail_threads: - init_threads(sdp, UNDO); fail_per_node: init_per_node(sdp, UNDO); fail_inodes: @@ -1389,7 +1302,7 @@ static struct dentry *gfs2_mount(struct file_system_type *fs_type, int flags, error = gfs2_mount_args(&args, data); if (error) { - printk(KERN_WARNING "GFS2: can't parse mount arguments\n"); + pr_warn("can't parse mount arguments\n"); goto error_super; } @@ -1439,15 +1352,15 @@ static struct dentry *gfs2_mount_meta(struct file_system_type *fs_type, error = kern_path(dev_name, LOOKUP_FOLLOW, &path); if (error) { - printk(KERN_WARNING "GFS2: path_lookup on %s returned error %d\n", - dev_name, error); + pr_warn("path_lookup on %s returned error %d\n", + dev_name, error); return ERR_PTR(error); } s = sget(&gfs2_fs_type, test_gfs2_super, set_meta_super, flags, path.dentry->d_inode->i_sb->s_bdev); path_put(&path); if (IS_ERR(s)) { - printk(KERN_WARNING "GFS2: gfs2 mount does not exist\n"); + pr_warn("gfs2 mount does not exist\n"); return ERR_CAST(s); } if ((flags ^ s->s_flags) & MS_RDONLY) { diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index 98236d0df3ca..c4effff7cf55 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -36,6 +36,8 @@ * the quota file, so it is not being constantly read. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/sched.h> #include <linux/slab.h> #include <linux/mm.h> @@ -52,6 +54,11 @@ #include <linux/dqblk_xfs.h> #include <linux/lockref.h> #include <linux/list_lru.h> +#include <linux/rcupdate.h> +#include <linux/rculist_bl.h> +#include <linux/bit_spinlock.h> +#include <linux/jhash.h> +#include <linux/vmalloc.h> #include "gfs2.h" #include "incore.h" @@ -67,16 +74,44 @@ #include "inode.h" #include "util.h" -struct gfs2_quota_change_host { - u64 qc_change; - u32 qc_flags; /* GFS2_QCF_... */ - struct kqid qc_id; -}; +#define GFS2_QD_HASH_SHIFT 12 +#define GFS2_QD_HASH_SIZE (1 << GFS2_QD_HASH_SHIFT) +#define GFS2_QD_HASH_MASK (GFS2_QD_HASH_SIZE - 1) -/* Lock order: qd_lock -> qd->lockref.lock -> lru lock */ +/* Lock order: qd_lock -> bucket lock -> qd->lockref.lock -> lru lock */ +/* -> sd_bitmap_lock */ static DEFINE_SPINLOCK(qd_lock); struct list_lru gfs2_qd_lru; +static struct hlist_bl_head qd_hash_table[GFS2_QD_HASH_SIZE]; + +static unsigned int gfs2_qd_hash(const struct gfs2_sbd *sdp, + const struct kqid qid) +{ + unsigned int h; + + h = jhash(&sdp, sizeof(struct gfs2_sbd *), 0); + h = jhash(&qid, sizeof(struct kqid), h); + + return h & GFS2_QD_HASH_MASK; +} + +static inline void spin_lock_bucket(unsigned int hash) +{ + hlist_bl_lock(&qd_hash_table[hash]); +} + +static inline void spin_unlock_bucket(unsigned int hash) +{ + hlist_bl_unlock(&qd_hash_table[hash]); +} + +static void gfs2_qd_dealloc(struct rcu_head *rcu) +{ + struct gfs2_quota_data *qd = container_of(rcu, struct gfs2_quota_data, qd_rcu); + kmem_cache_free(gfs2_quotad_cachep, qd); +} + static void gfs2_qd_dispose(struct list_head *list) { struct gfs2_quota_data *qd; @@ -93,6 +128,10 @@ static void gfs2_qd_dispose(struct list_head *list) list_del(&qd->qd_list); spin_unlock(&qd_lock); + spin_lock_bucket(qd->qd_hash); + hlist_bl_del_rcu(&qd->qd_hlist); + spin_unlock_bucket(qd->qd_hash); + gfs2_assert_warn(sdp, !qd->qd_change); gfs2_assert_warn(sdp, !qd->qd_slot_count); gfs2_assert_warn(sdp, !qd->qd_bh_count); @@ -101,7 +140,7 @@ static void gfs2_qd_dispose(struct list_head *list) atomic_dec(&sdp->sd_quota_count); /* Delete it from the common reclaim list */ - kmem_cache_free(gfs2_quotad_cachep, qd); + call_rcu(&qd->qd_rcu, gfs2_qd_dealloc); } } @@ -171,83 +210,95 @@ static u64 qd2offset(struct gfs2_quota_data *qd) return offset; } -static int qd_alloc(struct gfs2_sbd *sdp, struct kqid qid, - struct gfs2_quota_data **qdp) +static struct gfs2_quota_data *qd_alloc(unsigned hash, struct gfs2_sbd *sdp, struct kqid qid) { struct gfs2_quota_data *qd; int error; qd = kmem_cache_zalloc(gfs2_quotad_cachep, GFP_NOFS); if (!qd) - return -ENOMEM; + return NULL; + qd->qd_sbd = sdp; qd->qd_lockref.count = 1; spin_lock_init(&qd->qd_lockref.lock); qd->qd_id = qid; qd->qd_slot = -1; INIT_LIST_HEAD(&qd->qd_lru); + qd->qd_hash = hash; error = gfs2_glock_get(sdp, qd2index(qd), &gfs2_quota_glops, CREATE, &qd->qd_gl); if (error) goto fail; - *qdp = qd; - - return 0; + return qd; fail: kmem_cache_free(gfs2_quotad_cachep, qd); - return error; + return NULL; } -static int qd_get(struct gfs2_sbd *sdp, struct kqid qid, - struct gfs2_quota_data **qdp) +static struct gfs2_quota_data *gfs2_qd_search_bucket(unsigned int hash, + const struct gfs2_sbd *sdp, + struct kqid qid) { - struct gfs2_quota_data *qd = NULL, *new_qd = NULL; - int error, found; - - *qdp = NULL; + struct gfs2_quota_data *qd; + struct hlist_bl_node *h; - for (;;) { - found = 0; - spin_lock(&qd_lock); - list_for_each_entry(qd, &sdp->sd_quota_list, qd_list) { - if (qid_eq(qd->qd_id, qid) && - lockref_get_not_dead(&qd->qd_lockref)) { - list_lru_del(&gfs2_qd_lru, &qd->qd_lru); - found = 1; - break; - } + hlist_bl_for_each_entry_rcu(qd, h, &qd_hash_table[hash], qd_hlist) { + if (!qid_eq(qd->qd_id, qid)) + continue; + if (qd->qd_sbd != sdp) + continue; + if (lockref_get_not_dead(&qd->qd_lockref)) { + list_lru_del(&gfs2_qd_lru, &qd->qd_lru); + return qd; } + } - if (!found) - qd = NULL; + return NULL; +} - if (!qd && new_qd) { - qd = new_qd; - list_add(&qd->qd_list, &sdp->sd_quota_list); - atomic_inc(&sdp->sd_quota_count); - new_qd = NULL; - } - spin_unlock(&qd_lock); +static int qd_get(struct gfs2_sbd *sdp, struct kqid qid, + struct gfs2_quota_data **qdp) +{ + struct gfs2_quota_data *qd, *new_qd; + unsigned int hash = gfs2_qd_hash(sdp, qid); - if (qd) { - if (new_qd) { - gfs2_glock_put(new_qd->qd_gl); - kmem_cache_free(gfs2_quotad_cachep, new_qd); - } - *qdp = qd; - return 0; - } + rcu_read_lock(); + *qdp = qd = gfs2_qd_search_bucket(hash, sdp, qid); + rcu_read_unlock(); - error = qd_alloc(sdp, qid, &new_qd); - if (error) - return error; + if (qd) + return 0; + + new_qd = qd_alloc(hash, sdp, qid); + if (!new_qd) + return -ENOMEM; + + spin_lock(&qd_lock); + spin_lock_bucket(hash); + *qdp = qd = gfs2_qd_search_bucket(hash, sdp, qid); + if (qd == NULL) { + *qdp = new_qd; + list_add(&new_qd->qd_list, &sdp->sd_quota_list); + hlist_bl_add_head_rcu(&new_qd->qd_hlist, &qd_hash_table[hash]); + atomic_inc(&sdp->sd_quota_count); } + spin_unlock_bucket(hash); + spin_unlock(&qd_lock); + + if (qd) { + gfs2_glock_put(new_qd->qd_gl); + kmem_cache_free(gfs2_quotad_cachep, new_qd); + } + + return 0; } + static void qd_hold(struct gfs2_quota_data *qd) { struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd; @@ -268,88 +319,49 @@ static void qd_put(struct gfs2_quota_data *qd) static int slot_get(struct gfs2_quota_data *qd) { - struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd; - unsigned int c, o = 0, b; - unsigned char byte = 0; + struct gfs2_sbd *sdp = qd->qd_sbd; + unsigned int bit; + int error = 0; - spin_lock(&qd_lock); + spin_lock(&sdp->sd_bitmap_lock); + if (qd->qd_slot_count != 0) + goto out; - if (qd->qd_slot_count++) { - spin_unlock(&qd_lock); - return 0; + error = -ENOSPC; + bit = find_first_zero_bit(sdp->sd_quota_bitmap, sdp->sd_quota_slots); + if (bit < sdp->sd_quota_slots) { + set_bit(bit, sdp->sd_quota_bitmap); + qd->qd_slot = bit; + error = 0; +out: + qd->qd_slot_count++; } + spin_unlock(&sdp->sd_bitmap_lock); - for (c = 0; c < sdp->sd_quota_chunks; c++) - for (o = 0; o < PAGE_SIZE; o++) { - byte = sdp->sd_quota_bitmap[c][o]; - if (byte != 0xFF) - goto found; - } - - goto fail; - -found: - for (b = 0; b < 8; b++) - if (!(byte & (1 << b))) - break; - qd->qd_slot = c * (8 * PAGE_SIZE) + o * 8 + b; - - if (qd->qd_slot >= sdp->sd_quota_slots) - goto fail; - - sdp->sd_quota_bitmap[c][o] |= 1 << b; - - spin_unlock(&qd_lock); - - return 0; - -fail: - qd->qd_slot_count--; - spin_unlock(&qd_lock); - return -ENOSPC; + return error; } static void slot_hold(struct gfs2_quota_data *qd) { - struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd; + struct gfs2_sbd *sdp = qd->qd_sbd; - spin_lock(&qd_lock); + spin_lock(&sdp->sd_bitmap_lock); gfs2_assert(sdp, qd->qd_slot_count); qd->qd_slot_count++; - spin_unlock(&qd_lock); -} - -static void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap, - unsigned int bit, int new_value) -{ - unsigned int c, o, b = bit; - int old_value; - - c = b / (8 * PAGE_SIZE); - b %= 8 * PAGE_SIZE; - o = b / 8; - b %= 8; - - old_value = (bitmap[c][o] & (1 << b)); - gfs2_assert_withdraw(sdp, !old_value != !new_value); - - if (new_value) - bitmap[c][o] |= 1 << b; - else - bitmap[c][o] &= ~(1 << b); + spin_unlock(&sdp->sd_bitmap_lock); } static void slot_put(struct gfs2_quota_data *qd) { - struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd; + struct gfs2_sbd *sdp = qd->qd_sbd; - spin_lock(&qd_lock); + spin_lock(&sdp->sd_bitmap_lock); gfs2_assert(sdp, qd->qd_slot_count); if (!--qd->qd_slot_count) { - gfs2_icbit_munge(sdp, sdp->sd_quota_bitmap, qd->qd_slot, 0); + BUG_ON(!test_and_clear_bit(qd->qd_slot, sdp->sd_quota_bitmap)); qd->qd_slot = -1; } - spin_unlock(&qd_lock); + spin_unlock(&sdp->sd_bitmap_lock); } static int bh_get(struct gfs2_quota_data *qd) @@ -427,8 +439,7 @@ static int qd_check_sync(struct gfs2_sbd *sdp, struct gfs2_quota_data *qd, list_move_tail(&qd->qd_list, &sdp->sd_quota_list); set_bit(QDF_LOCKED, &qd->qd_flags); qd->qd_change_sync = qd->qd_change; - gfs2_assert_warn(sdp, qd->qd_slot_count); - qd->qd_slot_count++; + slot_hold(qd); return 1; } @@ -1073,10 +1084,10 @@ static int print_message(struct gfs2_quota_data *qd, char *type) { struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd; - printk(KERN_INFO "GFS2: fsid=%s: quota %s for %s %u\n", - sdp->sd_fsname, type, - (qd->qd_id.type == USRQUOTA) ? "user" : "group", - from_kqid(&init_user_ns, qd->qd_id)); + fs_info(sdp, "quota %s for %s %u\n", + type, + (qd->qd_id.type == USRQUOTA) ? "user" : "group", + from_kqid(&init_user_ns, qd->qd_id)); return 0; } @@ -1214,17 +1225,6 @@ int gfs2_quota_refresh(struct gfs2_sbd *sdp, struct kqid qid) return error; } -static void gfs2_quota_change_in(struct gfs2_quota_change_host *qc, const void *buf) -{ - const struct gfs2_quota_change *str = buf; - - qc->qc_change = be64_to_cpu(str->qc_change); - qc->qc_flags = be32_to_cpu(str->qc_flags); - qc->qc_id = make_kqid(&init_user_ns, - (qc->qc_flags & GFS2_QCF_USER)?USRQUOTA:GRPQUOTA, - be32_to_cpu(str->qc_id)); -} - int gfs2_quota_init(struct gfs2_sbd *sdp) { struct gfs2_inode *ip = GFS2_I(sdp->sd_qc_inode); @@ -1232,6 +1232,8 @@ int gfs2_quota_init(struct gfs2_sbd *sdp) unsigned int blocks = size >> sdp->sd_sb.sb_bsize_shift; unsigned int x, slot = 0; unsigned int found = 0; + unsigned int hash; + unsigned int bm_size; u64 dblock; u32 extlen = 0; int error; @@ -1240,23 +1242,19 @@ int gfs2_quota_init(struct gfs2_sbd *sdp) return -EIO; sdp->sd_quota_slots = blocks * sdp->sd_qc_per_block; - sdp->sd_quota_chunks = DIV_ROUND_UP(sdp->sd_quota_slots, 8 * PAGE_SIZE); - + bm_size = DIV_ROUND_UP(sdp->sd_quota_slots, 8 * sizeof(unsigned long)); + bm_size *= sizeof(unsigned long); error = -ENOMEM; - - sdp->sd_quota_bitmap = kcalloc(sdp->sd_quota_chunks, - sizeof(unsigned char *), GFP_NOFS); + sdp->sd_quota_bitmap = kzalloc(bm_size, GFP_NOFS | __GFP_NOWARN); + if (sdp->sd_quota_bitmap == NULL) + sdp->sd_quota_bitmap = __vmalloc(bm_size, GFP_NOFS | + __GFP_ZERO, PAGE_KERNEL); if (!sdp->sd_quota_bitmap) return error; - for (x = 0; x < sdp->sd_quota_chunks; x++) { - sdp->sd_quota_bitmap[x] = kzalloc(PAGE_SIZE, GFP_NOFS); - if (!sdp->sd_quota_bitmap[x]) - goto fail; - } - for (x = 0; x < blocks; x++) { struct buffer_head *bh; + const struct gfs2_quota_change *qc; unsigned int y; if (!extlen) { @@ -1274,34 +1272,42 @@ int gfs2_quota_init(struct gfs2_sbd *sdp) goto fail; } + qc = (const struct gfs2_quota_change *)(bh->b_data + sizeof(struct gfs2_meta_header)); for (y = 0; y < sdp->sd_qc_per_block && slot < sdp->sd_quota_slots; y++, slot++) { - struct gfs2_quota_change_host qc; struct gfs2_quota_data *qd; - - gfs2_quota_change_in(&qc, bh->b_data + - sizeof(struct gfs2_meta_header) + - y * sizeof(struct gfs2_quota_change)); - if (!qc.qc_change) + s64 qc_change = be64_to_cpu(qc->qc_change); + u32 qc_flags = be32_to_cpu(qc->qc_flags); + enum quota_type qtype = (qc_flags & GFS2_QCF_USER) ? + USRQUOTA : GRPQUOTA; + struct kqid qc_id = make_kqid(&init_user_ns, qtype, + be32_to_cpu(qc->qc_id)); + qc++; + if (!qc_change) continue; - error = qd_alloc(sdp, qc.qc_id, &qd); - if (error) { + hash = gfs2_qd_hash(sdp, qc_id); + qd = qd_alloc(hash, sdp, qc_id); + if (qd == NULL) { brelse(bh); goto fail; } set_bit(QDF_CHANGE, &qd->qd_flags); - qd->qd_change = qc.qc_change; + qd->qd_change = qc_change; qd->qd_slot = slot; qd->qd_slot_count = 1; spin_lock(&qd_lock); - gfs2_icbit_munge(sdp, sdp->sd_quota_bitmap, slot, 1); + BUG_ON(test_and_set_bit(slot, sdp->sd_quota_bitmap)); list_add(&qd->qd_list, &sdp->sd_quota_list); atomic_inc(&sdp->sd_quota_count); spin_unlock(&qd_lock); + spin_lock_bucket(hash); + hlist_bl_add_head_rcu(&qd->qd_hlist, &qd_hash_table[hash]); + spin_unlock_bucket(hash); + found++; } @@ -1324,44 +1330,28 @@ void gfs2_quota_cleanup(struct gfs2_sbd *sdp) { struct list_head *head = &sdp->sd_quota_list; struct gfs2_quota_data *qd; - unsigned int x; spin_lock(&qd_lock); while (!list_empty(head)) { qd = list_entry(head->prev, struct gfs2_quota_data, qd_list); - /* - * To be removed in due course... we should be able to - * ensure that all refs to the qd have done by this point - * so that this rather odd test is not required - */ - spin_lock(&qd->qd_lockref.lock); - if (qd->qd_lockref.count > 1 || - (qd->qd_lockref.count && !test_bit(QDF_CHANGE, &qd->qd_flags))) { - spin_unlock(&qd->qd_lockref.lock); - list_move(&qd->qd_list, head); - spin_unlock(&qd_lock); - schedule(); - spin_lock(&qd_lock); - continue; - } - spin_unlock(&qd->qd_lockref.lock); - list_del(&qd->qd_list); + /* Also remove if this qd exists in the reclaim list */ list_lru_del(&gfs2_qd_lru, &qd->qd_lru); atomic_dec(&sdp->sd_quota_count); spin_unlock(&qd_lock); - if (!qd->qd_lockref.count) { - gfs2_assert_warn(sdp, !qd->qd_change); - gfs2_assert_warn(sdp, !qd->qd_slot_count); - } else - gfs2_assert_warn(sdp, qd->qd_slot_count == 1); + spin_lock_bucket(qd->qd_hash); + hlist_bl_del_rcu(&qd->qd_hlist); + spin_unlock_bucket(qd->qd_hash); + + gfs2_assert_warn(sdp, !qd->qd_change); + gfs2_assert_warn(sdp, !qd->qd_slot_count); gfs2_assert_warn(sdp, !qd->qd_bh_count); gfs2_glock_put(qd->qd_gl); - kmem_cache_free(gfs2_quotad_cachep, qd); + call_rcu(&qd->qd_rcu, gfs2_qd_dealloc); spin_lock(&qd_lock); } @@ -1370,9 +1360,11 @@ void gfs2_quota_cleanup(struct gfs2_sbd *sdp) gfs2_assert_warn(sdp, !atomic_read(&sdp->sd_quota_count)); if (sdp->sd_quota_bitmap) { - for (x = 0; x < sdp->sd_quota_chunks; x++) - kfree(sdp->sd_quota_bitmap[x]); - kfree(sdp->sd_quota_bitmap); + if (is_vmalloc_addr(sdp->sd_quota_bitmap)) + vfree(sdp->sd_quota_bitmap); + else + kfree(sdp->sd_quota_bitmap); + sdp->sd_quota_bitmap = NULL; } } @@ -1656,3 +1648,11 @@ const struct quotactl_ops gfs2_quotactl_ops = { .get_dqblk = gfs2_get_dqblk, .set_dqblk = gfs2_set_dqblk, }; + +void __init gfs2_quota_hash_init(void) +{ + unsigned i; + + for(i = 0; i < GFS2_QD_HASH_SIZE; i++) + INIT_HLIST_BL_HEAD(&qd_hash_table[i]); +} diff --git a/fs/gfs2/quota.h b/fs/gfs2/quota.h index 96e4f34a03b0..55d506eb3c4a 100644 --- a/fs/gfs2/quota.h +++ b/fs/gfs2/quota.h @@ -57,5 +57,6 @@ static inline int gfs2_quota_lock_check(struct gfs2_inode *ip) extern const struct quotactl_ops gfs2_quotactl_ops; extern struct shrinker gfs2_qd_shrinker; extern struct list_lru gfs2_qd_lru; +extern void __init gfs2_quota_hash_init(void); #endif /* __QUOTA_DOT_H__ */ diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c index 963b2d75200c..7ad4094d68c0 100644 --- a/fs/gfs2/recovery.c +++ b/fs/gfs2/recovery.c @@ -52,9 +52,9 @@ int gfs2_replay_read_block(struct gfs2_jdesc *jd, unsigned int blk, return error; } -int gfs2_revoke_add(struct gfs2_sbd *sdp, u64 blkno, unsigned int where) +int gfs2_revoke_add(struct gfs2_jdesc *jd, u64 blkno, unsigned int where) { - struct list_head *head = &sdp->sd_revoke_list; + struct list_head *head = &jd->jd_revoke_list; struct gfs2_revoke_replay *rr; int found = 0; @@ -81,13 +81,13 @@ int gfs2_revoke_add(struct gfs2_sbd *sdp, u64 blkno, unsigned int where) return 1; } -int gfs2_revoke_check(struct gfs2_sbd *sdp, u64 blkno, unsigned int where) +int gfs2_revoke_check(struct gfs2_jdesc *jd, u64 blkno, unsigned int where) { struct gfs2_revoke_replay *rr; int wrap, a, b, revoke; int found = 0; - list_for_each_entry(rr, &sdp->sd_revoke_list, rr_list) { + list_for_each_entry(rr, &jd->jd_revoke_list, rr_list) { if (rr->rr_blkno == blkno) { found = 1; break; @@ -97,17 +97,17 @@ int gfs2_revoke_check(struct gfs2_sbd *sdp, u64 blkno, unsigned int where) if (!found) return 0; - wrap = (rr->rr_where < sdp->sd_replay_tail); - a = (sdp->sd_replay_tail < where); + wrap = (rr->rr_where < jd->jd_replay_tail); + a = (jd->jd_replay_tail < where); b = (where < rr->rr_where); revoke = (wrap) ? (a || b) : (a && b); return revoke; } -void gfs2_revoke_clean(struct gfs2_sbd *sdp) +void gfs2_revoke_clean(struct gfs2_jdesc *jd) { - struct list_head *head = &sdp->sd_revoke_list; + struct list_head *head = &jd->jd_revoke_list; struct gfs2_revoke_replay *rr; while (!list_empty(head)) { diff --git a/fs/gfs2/recovery.h b/fs/gfs2/recovery.h index 2226136c7647..6142836cce96 100644 --- a/fs/gfs2/recovery.h +++ b/fs/gfs2/recovery.h @@ -23,9 +23,9 @@ static inline void gfs2_replay_incr_blk(struct gfs2_sbd *sdp, unsigned int *blk) extern int gfs2_replay_read_block(struct gfs2_jdesc *jd, unsigned int blk, struct buffer_head **bh); -extern int gfs2_revoke_add(struct gfs2_sbd *sdp, u64 blkno, unsigned int where); -extern int gfs2_revoke_check(struct gfs2_sbd *sdp, u64 blkno, unsigned int where); -extern void gfs2_revoke_clean(struct gfs2_sbd *sdp); +extern int gfs2_revoke_add(struct gfs2_jdesc *jd, u64 blkno, unsigned int where); +extern int gfs2_revoke_check(struct gfs2_jdesc *jd, u64 blkno, unsigned int where); +extern void gfs2_revoke_clean(struct gfs2_jdesc *jd); extern int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head); diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index c8d6161bd682..281a7716e3f3 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -7,6 +7,8 @@ * of the GNU General Public License version 2. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/completion.h> @@ -57,6 +59,11 @@ * 3 = Used (metadata) */ +struct gfs2_extent { + struct gfs2_rbm rbm; + u32 len; +}; + static const char valid_change[16] = { /* current */ /* n */ 0, 1, 1, 1, @@ -65,8 +72,9 @@ static const char valid_change[16] = { 1, 0, 0, 0 }; -static int gfs2_rbm_find(struct gfs2_rbm *rbm, u8 state, u32 minext, - const struct gfs2_inode *ip, bool nowrap); +static int gfs2_rbm_find(struct gfs2_rbm *rbm, u8 state, u32 *minext, + const struct gfs2_inode *ip, bool nowrap, + const struct gfs2_alloc_parms *ap); /** @@ -93,12 +101,12 @@ static inline void gfs2_setbit(const struct gfs2_rbm *rbm, bool do_clone, cur_state = (*byte1 >> bit) & GFS2_BIT_MASK; if (unlikely(!valid_change[new_state * 4 + cur_state])) { - printk(KERN_WARNING "GFS2: buf_blk = 0x%x old_state=%d, " - "new_state=%d\n", rbm->offset, cur_state, new_state); - printk(KERN_WARNING "GFS2: rgrp=0x%llx bi_start=0x%x\n", - (unsigned long long)rbm->rgd->rd_addr, bi->bi_start); - printk(KERN_WARNING "GFS2: bi_offset=0x%x bi_len=0x%x\n", - bi->bi_offset, bi->bi_len); + pr_warn("buf_blk = 0x%x old_state=%d, new_state=%d\n", + rbm->offset, cur_state, new_state); + pr_warn("rgrp=0x%llx bi_start=0x%x\n", + (unsigned long long)rbm->rgd->rd_addr, bi->bi_start); + pr_warn("bi_offset=0x%x bi_len=0x%x\n", + bi->bi_offset, bi->bi_len); dump_stack(); gfs2_consist_rgrpd(rbm->rgd); return; @@ -635,9 +643,13 @@ static void __rs_deltree(struct gfs2_blkreserv *rs) /* return reserved blocks to the rgrp */ BUG_ON(rs->rs_rbm.rgd->rd_reserved < rs->rs_free); rs->rs_rbm.rgd->rd_reserved -= rs->rs_free; + /* The rgrp extent failure point is likely not to increase; + it will only do so if the freed blocks are somehow + contiguous with a span of free blocks that follows. Still, + it will force the number to be recalculated later. */ + rgd->rd_extfail_pt += rs->rs_free; rs->rs_free = 0; clear_bit(GBF_FULL, &bi->bi_flags); - smp_mb__after_clear_bit(); } } @@ -726,11 +738,11 @@ void gfs2_clear_rgrpd(struct gfs2_sbd *sdp) static void gfs2_rindex_print(const struct gfs2_rgrpd *rgd) { - printk(KERN_INFO " ri_addr = %llu\n", (unsigned long long)rgd->rd_addr); - printk(KERN_INFO " ri_length = %u\n", rgd->rd_length); - printk(KERN_INFO " ri_data0 = %llu\n", (unsigned long long)rgd->rd_data0); - printk(KERN_INFO " ri_data = %u\n", rgd->rd_data); - printk(KERN_INFO " ri_bitbytes = %u\n", rgd->rd_bitbytes); + pr_info("ri_addr = %llu\n", (unsigned long long)rgd->rd_addr); + pr_info("ri_length = %u\n", rgd->rd_length); + pr_info("ri_data0 = %llu\n", (unsigned long long)rgd->rd_data0); + pr_info("ri_data = %u\n", rgd->rd_data); + pr_info("ri_bitbytes = %u\n", rgd->rd_bitbytes); } /** @@ -876,6 +888,7 @@ static int rgd_insert(struct gfs2_rgrpd *rgd) static int read_rindex_entry(struct gfs2_inode *ip) { struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); + const unsigned bsize = sdp->sd_sb.sb_bsize; loff_t pos = sdp->sd_rgrps * sizeof(struct gfs2_rindex); struct gfs2_rindex buf; int error; @@ -913,6 +926,8 @@ static int read_rindex_entry(struct gfs2_inode *ip) goto fail; rgd->rd_gl->gl_object = rgd; + rgd->rd_gl->gl_vm.start = rgd->rd_addr * bsize; + rgd->rd_gl->gl_vm.end = rgd->rd_gl->gl_vm.start + (rgd->rd_length * bsize) - 1; rgd->rd_rgl = (struct gfs2_rgrp_lvb *)rgd->rd_gl->gl_lksb.sb_lvbptr; rgd->rd_flags &= ~GFS2_RDF_UPTODATE; if (rgd->rd_data > sdp->sd_max_rg_data) @@ -1089,7 +1104,7 @@ static u32 count_unlinked(struct gfs2_rgrpd *rgd) * Returns: errno */ -int gfs2_rgrp_bh_get(struct gfs2_rgrpd *rgd) +static int gfs2_rgrp_bh_get(struct gfs2_rgrpd *rgd) { struct gfs2_sbd *sdp = rgd->rd_sbd; struct gfs2_glock *gl = rgd->rd_gl; @@ -1126,6 +1141,8 @@ int gfs2_rgrp_bh_get(struct gfs2_rgrpd *rgd) gfs2_rgrp_in(rgd, (rgd->rd_bits[0].bi_bh)->b_data); rgd->rd_flags |= (GFS2_RDF_UPTODATE | GFS2_RDF_CHECK); rgd->rd_free_clone = rgd->rd_free; + /* max out the rgrp allocation failure point */ + rgd->rd_extfail_pt = rgd->rd_free; } if (cpu_to_be32(GFS2_MAGIC) != rgd->rd_rgl->rl_magic) { rgd->rd_rgl->rl_unlinked = cpu_to_be32(count_unlinked(rgd)); @@ -1154,7 +1171,7 @@ fail: return error; } -int update_rgrp_lvb(struct gfs2_rgrpd *rgd) +static int update_rgrp_lvb(struct gfs2_rgrpd *rgd) { u32 rl_flags; @@ -1184,7 +1201,7 @@ int gfs2_rgrp_go_lock(struct gfs2_holder *gh) if (gh->gh_flags & GL_SKIP && sdp->sd_args.ar_rgrplvb) return 0; - return gfs2_rgrp_bh_get((struct gfs2_rgrpd *)gh->gh_gl->gl_object); + return gfs2_rgrp_bh_get(rgd); } /** @@ -1455,7 +1472,7 @@ static void rg_mblk_search(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip, if (WARN_ON(gfs2_rbm_from_block(&rbm, goal))) return; - ret = gfs2_rbm_find(&rbm, GFS2_BLKST_FREE, extlen, ip, true); + ret = gfs2_rbm_find(&rbm, GFS2_BLKST_FREE, &extlen, ip, true, ap); if (ret == 0) { rs->rs_rbm = rbm; rs->rs_free = extlen; @@ -1520,6 +1537,7 @@ static u64 gfs2_next_unreserved_block(struct gfs2_rgrpd *rgd, u64 block, * @rbm: The current position in the resource group * @ip: The inode for which we are searching for blocks * @minext: The minimum extent length + * @maxext: A pointer to the maximum extent structure * * This checks the current position in the rgrp to see whether there is * a reservation covering this block. If not then this function is a @@ -1532,7 +1550,8 @@ static u64 gfs2_next_unreserved_block(struct gfs2_rgrpd *rgd, u64 block, static int gfs2_reservation_check_and_update(struct gfs2_rbm *rbm, const struct gfs2_inode *ip, - u32 minext) + u32 minext, + struct gfs2_extent *maxext) { u64 block = gfs2_rbm_to_block(rbm); u32 extlen = 1; @@ -1545,8 +1564,7 @@ static int gfs2_reservation_check_and_update(struct gfs2_rbm *rbm, */ if (minext) { extlen = gfs2_free_extlen(rbm, minext); - nblock = block + extlen; - if (extlen < minext) + if (extlen <= maxext->len) goto fail; } @@ -1555,9 +1573,17 @@ static int gfs2_reservation_check_and_update(struct gfs2_rbm *rbm, * and skip if parts of it are already reserved */ nblock = gfs2_next_unreserved_block(rbm->rgd, block, extlen, ip); - if (nblock == block) - return 0; + if (nblock == block) { + if (!minext || extlen >= minext) + return 0; + + if (extlen > maxext->len) { + maxext->len = extlen; + maxext->rbm = *rbm; + } fail: + nblock = block + extlen; + } ret = gfs2_rbm_from_block(rbm, nblock); if (ret < 0) return ret; @@ -1568,30 +1594,38 @@ fail: * gfs2_rbm_find - Look for blocks of a particular state * @rbm: Value/result starting position and final position * @state: The state which we want to find - * @minext: The requested extent length (0 for a single block) + * @minext: Pointer to the requested extent length (NULL for a single block) + * This is updated to be the actual reservation size. * @ip: If set, check for reservations * @nowrap: Stop looking at the end of the rgrp, rather than wrapping * around until we've reached the starting point. + * @ap: the allocation parameters * * Side effects: * - If looking for free blocks, we set GBF_FULL on each bitmap which * has no free blocks in it. + * - If looking for free blocks, we set rd_extfail_pt on each rgrp which + * has come up short on a free block search. * * Returns: 0 on success, -ENOSPC if there is no block of the requested state */ -static int gfs2_rbm_find(struct gfs2_rbm *rbm, u8 state, u32 minext, - const struct gfs2_inode *ip, bool nowrap) +static int gfs2_rbm_find(struct gfs2_rbm *rbm, u8 state, u32 *minext, + const struct gfs2_inode *ip, bool nowrap, + const struct gfs2_alloc_parms *ap) { struct buffer_head *bh; int initial_bii; u32 initial_offset; + int first_bii = rbm->bii; + u32 first_offset = rbm->offset; u32 offset; u8 *buffer; int n = 0; int iters = rbm->rgd->rd_length; int ret; struct gfs2_bitmap *bi; + struct gfs2_extent maxext = { .rbm.rgd = rbm->rgd, }; /* If we are not starting at the beginning of a bitmap, then we * need to add one to the bitmap count to ensure that we search @@ -1620,7 +1654,9 @@ static int gfs2_rbm_find(struct gfs2_rbm *rbm, u8 state, u32 minext, return 0; initial_bii = rbm->bii; - ret = gfs2_reservation_check_and_update(rbm, ip, minext); + ret = gfs2_reservation_check_and_update(rbm, ip, + minext ? *minext : 0, + &maxext); if (ret == 0) return 0; if (ret > 0) { @@ -1655,6 +1691,24 @@ next_iter: break; } + if (minext == NULL || state != GFS2_BLKST_FREE) + return -ENOSPC; + + /* If the extent was too small, and it's smaller than the smallest + to have failed before, remember for future reference that it's + useless to search this rgrp again for this amount or more. */ + if ((first_offset == 0) && (first_bii == 0) && + (*minext < rbm->rgd->rd_extfail_pt)) + rbm->rgd->rd_extfail_pt = *minext; + + /* If the maximum extent we found is big enough to fulfill the + minimum requirements, use it anyway. */ + if (maxext.len) { + *rbm = maxext.rbm; + *minext = maxext.len; + return 0; + } + return -ENOSPC; } @@ -1680,7 +1734,8 @@ static void try_rgrp_unlink(struct gfs2_rgrpd *rgd, u64 *last_unlinked, u64 skip while (1) { down_write(&sdp->sd_log_flush_lock); - error = gfs2_rbm_find(&rbm, GFS2_BLKST_UNLINKED, 0, NULL, true); + error = gfs2_rbm_find(&rbm, GFS2_BLKST_UNLINKED, NULL, NULL, + true, NULL); up_write(&sdp->sd_log_flush_lock); if (error == -ENOSPC) break; @@ -1891,7 +1946,9 @@ int gfs2_inplace_reserve(struct gfs2_inode *ip, const struct gfs2_alloc_parms *a } /* Skip unuseable resource groups */ - if (rs->rs_rbm.rgd->rd_flags & (GFS2_RGF_NOALLOC | GFS2_RDF_ERROR)) + if ((rs->rs_rbm.rgd->rd_flags & (GFS2_RGF_NOALLOC | + GFS2_RDF_ERROR)) || + (ap->target > rs->rs_rbm.rgd->rd_extfail_pt)) goto skip_rgrp; if (sdp->sd_args.ar_rgrplvb) @@ -1911,15 +1968,16 @@ int gfs2_inplace_reserve(struct gfs2_inode *ip, const struct gfs2_alloc_parms *a return 0; } - /* Drop reservation, if we couldn't use reserved rgrp */ - if (gfs2_rs_active(rs)) - gfs2_rs_deltree(rs); check_rgrp: /* Check for unlinked inodes which can be reclaimed */ if (rs->rs_rbm.rgd->rd_flags & GFS2_RDF_CHECK) try_rgrp_unlink(rs->rs_rbm.rgd, &last_unlinked, ip->i_no_addr); skip_rgrp: + /* Drop reservation, if we couldn't use reserved rgrp */ + if (gfs2_rs_active(rs)) + gfs2_rs_deltree(rs); + /* Unlock rgrp if required */ if (!rg_locked) gfs2_glock_dq_uninit(&rs->rs_rgd_gh); @@ -2064,25 +2122,24 @@ static struct gfs2_rgrpd *rgblk_free(struct gfs2_sbd *sdp, u64 bstart, * */ -int gfs2_rgrp_dump(struct seq_file *seq, const struct gfs2_glock *gl) +void gfs2_rgrp_dump(struct seq_file *seq, const struct gfs2_glock *gl) { struct gfs2_rgrpd *rgd = gl->gl_object; struct gfs2_blkreserv *trs; const struct rb_node *n; if (rgd == NULL) - return 0; - gfs2_print_dbg(seq, " R: n:%llu f:%02x b:%u/%u i:%u r:%u\n", + return; + gfs2_print_dbg(seq, " R: n:%llu f:%02x b:%u/%u i:%u r:%u e:%u\n", (unsigned long long)rgd->rd_addr, rgd->rd_flags, rgd->rd_free, rgd->rd_free_clone, rgd->rd_dinodes, - rgd->rd_reserved); + rgd->rd_reserved, rgd->rd_extfail_pt); spin_lock(&rgd->rd_rsspin); for (n = rb_first(&rgd->rd_rstree); n; n = rb_next(&trs->rs_node)) { trs = rb_entry(n, struct gfs2_blkreserv, rs_node); dump_rs(seq, trs); } spin_unlock(&rgd->rd_rsspin); - return 0; } static void gfs2_rgrp_error(struct gfs2_rgrpd *rgd) @@ -2184,18 +2241,20 @@ int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *nblocks, int error; gfs2_set_alloc_start(&rbm, ip, dinode); - error = gfs2_rbm_find(&rbm, GFS2_BLKST_FREE, 0, ip, false); + error = gfs2_rbm_find(&rbm, GFS2_BLKST_FREE, NULL, ip, false, NULL); if (error == -ENOSPC) { gfs2_set_alloc_start(&rbm, ip, dinode); - error = gfs2_rbm_find(&rbm, GFS2_BLKST_FREE, 0, NULL, false); + error = gfs2_rbm_find(&rbm, GFS2_BLKST_FREE, NULL, NULL, false, + NULL); } /* Since all blocks are reserved in advance, this shouldn't happen */ if (error) { - fs_warn(sdp, "inum=%llu error=%d, nblocks=%u, full=%d\n", + fs_warn(sdp, "inum=%llu error=%d, nblocks=%u, full=%d fail_pt=%d\n", (unsigned long long)ip->i_no_addr, error, *nblocks, - test_bit(GBF_FULL, &rbm.rgd->rd_bits->bi_flags)); + test_bit(GBF_FULL, &rbm.rgd->rd_bits->bi_flags), + rbm.rgd->rd_extfail_pt); goto rgrp_error; } @@ -2221,7 +2280,7 @@ int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *nblocks, } } if (rbm.rgd->rd_free < *nblocks) { - printk(KERN_WARNING "nblocks=%u\n", *nblocks); + pr_warn("nblocks=%u\n", *nblocks); goto rgrp_error; } @@ -2239,7 +2298,7 @@ int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *nblocks, gfs2_statfs_change(sdp, 0, -(s64)*nblocks, dinode ? 1 : 0); if (dinode) - gfs2_trans_add_unrevoke(sdp, block, 1); + gfs2_trans_add_unrevoke(sdp, block, *nblocks); gfs2_quota_change(ip, *nblocks, ip->i_inode.i_uid, ip->i_inode.i_gid); diff --git a/fs/gfs2/rgrp.h b/fs/gfs2/rgrp.h index 3a10d2ffbbe7..463ab2e95d1c 100644 --- a/fs/gfs2/rgrp.h +++ b/fs/gfs2/rgrp.h @@ -68,7 +68,7 @@ extern void gfs2_rlist_add(struct gfs2_inode *ip, struct gfs2_rgrp_list *rlist, extern void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state); extern void gfs2_rlist_free(struct gfs2_rgrp_list *rlist); extern u64 gfs2_ri_total(struct gfs2_sbd *sdp); -extern int gfs2_rgrp_dump(struct seq_file *seq, const struct gfs2_glock *gl); +extern void gfs2_rgrp_dump(struct seq_file *seq, const struct gfs2_glock *gl); extern int gfs2_rgrp_send_discards(struct gfs2_sbd *sdp, u64 offset, struct buffer_head *bh, const struct gfs2_bitmap *bi, unsigned minlen, u64 *ptrimmed); diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 35da5b19c0de..de8afad89e51 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -7,6 +7,8 @@ * of the GNU General Public License version 2. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/bio.h> #include <linux/sched.h> #include <linux/slab.h> @@ -175,8 +177,7 @@ int gfs2_mount_args(struct gfs2_args *args, char *options) break; case Opt_debug: if (args->ar_errors == GFS2_ERRORS_PANIC) { - printk(KERN_WARNING "GFS2: -o debug and -o errors=panic " - "are mutually exclusive.\n"); + pr_warn("-o debug and -o errors=panic are mutually exclusive\n"); return -EINVAL; } args->ar_debug = 1; @@ -228,21 +229,21 @@ int gfs2_mount_args(struct gfs2_args *args, char *options) case Opt_commit: rv = match_int(&tmp[0], &args->ar_commit); if (rv || args->ar_commit <= 0) { - printk(KERN_WARNING "GFS2: commit mount option requires a positive numeric argument\n"); + pr_warn("commit mount option requires a positive numeric argument\n"); return rv ? rv : -EINVAL; } break; case Opt_statfs_quantum: rv = match_int(&tmp[0], &args->ar_statfs_quantum); if (rv || args->ar_statfs_quantum < 0) { - printk(KERN_WARNING "GFS2: statfs_quantum mount option requires a non-negative numeric argument\n"); + pr_warn("statfs_quantum mount option requires a non-negative numeric argument\n"); return rv ? rv : -EINVAL; } break; case Opt_quota_quantum: rv = match_int(&tmp[0], &args->ar_quota_quantum); if (rv || args->ar_quota_quantum <= 0) { - printk(KERN_WARNING "GFS2: quota_quantum mount option requires a positive numeric argument\n"); + pr_warn("quota_quantum mount option requires a positive numeric argument\n"); return rv ? rv : -EINVAL; } break; @@ -250,7 +251,7 @@ int gfs2_mount_args(struct gfs2_args *args, char *options) rv = match_int(&tmp[0], &args->ar_statfs_percent); if (rv || args->ar_statfs_percent < 0 || args->ar_statfs_percent > 100) { - printk(KERN_WARNING "statfs_percent mount option requires a numeric argument between 0 and 100\n"); + pr_warn("statfs_percent mount option requires a numeric argument between 0 and 100\n"); return rv ? rv : -EINVAL; } break; @@ -259,8 +260,7 @@ int gfs2_mount_args(struct gfs2_args *args, char *options) break; case Opt_err_panic: if (args->ar_debug) { - printk(KERN_WARNING "GFS2: -o debug and -o errors=panic " - "are mutually exclusive.\n"); + pr_warn("-o debug and -o errors=panic are mutually exclusive\n"); return -EINVAL; } args->ar_errors = GFS2_ERRORS_PANIC; @@ -279,7 +279,7 @@ int gfs2_mount_args(struct gfs2_args *args, char *options) break; case Opt_error: default: - printk(KERN_WARNING "GFS2: invalid mount option: %s\n", o); + pr_warn("invalid mount option: %s\n", o); return -EINVAL; } } @@ -295,9 +295,8 @@ int gfs2_mount_args(struct gfs2_args *args, char *options) void gfs2_jindex_free(struct gfs2_sbd *sdp) { - struct list_head list, *head; + struct list_head list; struct gfs2_jdesc *jd; - struct gfs2_journal_extent *jext; spin_lock(&sdp->sd_jindex_spin); list_add(&list, &sdp->sd_jindex_list); @@ -307,14 +306,7 @@ void gfs2_jindex_free(struct gfs2_sbd *sdp) while (!list_empty(&list)) { jd = list_entry(list.next, struct gfs2_jdesc, jd_list); - head = &jd->extent_list; - while (!list_empty(head)) { - jext = list_entry(head->next, - struct gfs2_journal_extent, - extent_list); - list_del(&jext->extent_list); - kfree(jext); - } + gfs2_free_journal_extents(jd); list_del(&jd->jd_list); iput(jd->jd_inode); kfree(jd); @@ -369,6 +361,33 @@ int gfs2_jdesc_check(struct gfs2_jdesc *jd) return 0; } +static int init_threads(struct gfs2_sbd *sdp) +{ + struct task_struct *p; + int error = 0; + + p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); + if (IS_ERR(p)) { + error = PTR_ERR(p); + fs_err(sdp, "can't start logd thread: %d\n", error); + return error; + } + sdp->sd_logd_process = p; + + p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); + if (IS_ERR(p)) { + error = PTR_ERR(p); + fs_err(sdp, "can't start quotad thread: %d\n", error); + goto fail; + } + sdp->sd_quotad_process = p; + return 0; + +fail: + kthread_stop(sdp->sd_logd_process); + return error; +} + /** * gfs2_make_fs_rw - Turn a Read-Only FS into a Read-Write one * @sdp: the filesystem @@ -384,10 +403,14 @@ int gfs2_make_fs_rw(struct gfs2_sbd *sdp) struct gfs2_log_header_host head; int error; - error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, 0, &t_gh); + error = init_threads(sdp); if (error) return error; + error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, 0, &t_gh); + if (error) + goto fail_threads; + j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); error = gfs2_find_jhead(sdp->sd_jdesc, &head); @@ -417,7 +440,9 @@ int gfs2_make_fs_rw(struct gfs2_sbd *sdp) fail: t_gh.gh_flags |= GL_NOCACHE; gfs2_glock_dq_uninit(&t_gh); - +fail_threads: + kthread_stop(sdp->sd_quotad_process); + kthread_stop(sdp->sd_logd_process); return error; } @@ -800,6 +825,9 @@ static int gfs2_make_fs_ro(struct gfs2_sbd *sdp) struct gfs2_holder t_gh; int error; + kthread_stop(sdp->sd_quotad_process); + kthread_stop(sdp->sd_logd_process); + flush_workqueue(gfs2_delete_workqueue); gfs2_quota_sync(sdp->sd_vfs, 0); gfs2_statfs_sync(sdp->sd_vfs, 0); @@ -857,9 +885,6 @@ restart: } spin_unlock(&sdp->sd_jindex_spin); - kthread_stop(sdp->sd_quotad_process); - kthread_stop(sdp->sd_logd_process); - if (!(sb->s_flags & MS_RDONLY)) { error = gfs2_make_fs_ro(sdp); if (error) @@ -1142,6 +1167,8 @@ static int gfs2_remount_fs(struct super_block *sb, int *flags, char *data) struct gfs2_tune *gt = &sdp->sd_tune; int error; + sync_filesystem(sb); + spin_lock(>->gt_spin); args.ar_commit = gt->gt_logd_secs; args.ar_quota_quantum = gt->gt_quota_quantum; @@ -1223,7 +1250,7 @@ static int gfs2_drop_inode(struct inode *inode) { struct gfs2_inode *ip = GFS2_I(inode); - if (inode->i_nlink) { + if (!test_bit(GIF_FREE_VFS_INODE, &ip->i_flags) && inode->i_nlink) { struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl; if (gl && test_bit(GLF_DEMOTE, &gl->gl_flags)) clear_nlink(inode); @@ -1438,6 +1465,11 @@ static void gfs2_evict_inode(struct inode *inode) struct gfs2_holder gh; int error; + if (test_bit(GIF_FREE_VFS_INODE, &ip->i_flags)) { + clear_inode(inode); + return; + } + if (inode->i_nlink || (sb->s_flags & MS_RDONLY)) goto out; @@ -1525,7 +1557,7 @@ out_unlock: fs_warn(sdp, "gfs2_evict_inode: %d\n", error); out: /* Case 3 starts here */ - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); gfs2_rs_delete(ip, NULL); gfs2_ordered_del_inode(ip); clear_inode(inode); diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c index d09f6edda0ff..de25d5577e5d 100644 --- a/fs/gfs2/sys.c +++ b/fs/gfs2/sys.c @@ -7,6 +7,8 @@ * of the GNU General Public License version 2. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/sched.h> #include <linux/spinlock.h> #include <linux/completion.h> @@ -138,9 +140,8 @@ static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) if (simple_strtol(buf, NULL, 0) != 1) return -EINVAL; - gfs2_lm_withdraw(sdp, - "GFS2: fsid=%s: withdrawing from cluster at user's request\n", - sdp->sd_fsname); + gfs2_lm_withdraw(sdp, "withdrawing from cluster at user's request\n"); + return len; } diff --git a/fs/gfs2/trans.c b/fs/gfs2/trans.c index 2b20d7046bf3..bead90d27bad 100644 --- a/fs/gfs2/trans.c +++ b/fs/gfs2/trans.c @@ -7,6 +7,8 @@ * of the GNU General Public License version 2. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/sched.h> #include <linux/slab.h> #include <linux/spinlock.h> @@ -51,6 +53,9 @@ int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks, if (revokes) tr->tr_reserved += gfs2_struct2blk(sdp, revokes, sizeof(u64)); + INIT_LIST_HEAD(&tr->tr_databuf); + INIT_LIST_HEAD(&tr->tr_buf); + sb_start_intwrite(sdp->sd_vfs); gfs2_holder_init(sdp->sd_trans_gl, LM_ST_SHARED, 0, &tr->tr_t_gh); @@ -96,14 +101,13 @@ static void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks) static void gfs2_print_trans(const struct gfs2_trans *tr) { - printk(KERN_WARNING "GFS2: Transaction created at: %pSR\n", - (void *)tr->tr_ip); - printk(KERN_WARNING "GFS2: blocks=%u revokes=%u reserved=%u touched=%d\n", - tr->tr_blocks, tr->tr_revokes, tr->tr_reserved, tr->tr_touched); - printk(KERN_WARNING "GFS2: Buf %u/%u Databuf %u/%u Revoke %u/%u\n", - tr->tr_num_buf_new, tr->tr_num_buf_rm, - tr->tr_num_databuf_new, tr->tr_num_databuf_rm, - tr->tr_num_revoke, tr->tr_num_revoke_rm); + pr_warn("Transaction created at: %pSR\n", (void *)tr->tr_ip); + pr_warn("blocks=%u revokes=%u reserved=%u touched=%u\n", + tr->tr_blocks, tr->tr_revokes, tr->tr_reserved, tr->tr_touched); + pr_warn("Buf %u/%u Databuf %u/%u Revoke %u/%u\n", + tr->tr_num_buf_new, tr->tr_num_buf_rm, + tr->tr_num_databuf_new, tr->tr_num_databuf_rm, + tr->tr_num_revoke, tr->tr_num_revoke_rm); } void gfs2_trans_end(struct gfs2_sbd *sdp) @@ -210,8 +214,7 @@ void gfs2_trans_add_data(struct gfs2_glock *gl, struct buffer_head *bh) set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags); gfs2_pin(sdp, bd->bd_bh); tr->tr_num_databuf_new++; - sdp->sd_log_num_databuf++; - list_add_tail(&bd->bd_list, &sdp->sd_log_le_databuf); + list_add_tail(&bd->bd_list, &tr->tr_databuf); } gfs2_log_unlock(sdp); unlock_buffer(bh); @@ -230,16 +233,14 @@ static void meta_lo_add(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd) set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags); mh = (struct gfs2_meta_header *)bd->bd_bh->b_data; if (unlikely(mh->mh_magic != cpu_to_be32(GFS2_MAGIC))) { - printk(KERN_ERR - "Attempting to add uninitialised block to journal (inplace block=%lld)\n", + pr_err("Attempting to add uninitialised block to journal (inplace block=%lld)\n", (unsigned long long)bd->bd_bh->b_blocknr); BUG(); } gfs2_pin(sdp, bd->bd_bh); mh->__pad0 = cpu_to_be64(0); mh->mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid); - sdp->sd_log_num_buf++; - list_add(&bd->bd_list, &sdp->sd_log_le_buf); + list_add(&bd->bd_list, &tr->tr_buf); tr->tr_num_buf_new++; } diff --git a/fs/gfs2/util.c b/fs/gfs2/util.c index f7109f689e61..86d2035ac669 100644 --- a/fs/gfs2/util.c +++ b/fs/gfs2/util.c @@ -7,6 +7,8 @@ * of the GNU General Public License version 2. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/spinlock.h> #include <linux/completion.h> #include <linux/buffer_head.h> @@ -30,22 +32,27 @@ mempool_t *gfs2_page_pool __read_mostly; void gfs2_assert_i(struct gfs2_sbd *sdp) { - printk(KERN_EMERG "GFS2: fsid=%s: fatal assertion failed\n", - sdp->sd_fsname); + fs_emerg(sdp, "fatal assertion failed\n"); } -int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...) +int gfs2_lm_withdraw(struct gfs2_sbd *sdp, const char *fmt, ...) { struct lm_lockstruct *ls = &sdp->sd_lockstruct; const struct lm_lockops *lm = ls->ls_ops; va_list args; + struct va_format vaf; if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW && test_and_set_bit(SDF_SHUTDOWN, &sdp->sd_flags)) return 0; va_start(args, fmt); - vprintk(fmt, args); + + vaf.fmt = fmt; + vaf.va = &args; + + fs_err(sdp, "%pV", &vaf); + va_end(args); if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) { @@ -66,7 +73,7 @@ int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...) } if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC) - panic("GFS2: fsid=%s: panic requested.\n", sdp->sd_fsname); + panic("GFS2: fsid=%s: panic requested\n", sdp->sd_fsname); return -1; } @@ -82,10 +89,9 @@ int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion, { int me; me = gfs2_lm_withdraw(sdp, - "GFS2: fsid=%s: fatal: assertion \"%s\" failed\n" - "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", - sdp->sd_fsname, assertion, - sdp->sd_fsname, function, file, line); + "fatal: assertion \"%s\" failed\n" + " function = %s, file = %s, line = %u\n", + assertion, function, file, line); dump_stack(); return (me) ? -1 : -2; } @@ -105,11 +111,8 @@ int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion, return -2; if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) - printk(KERN_WARNING - "GFS2: fsid=%s: warning: assertion \"%s\" failed\n" - "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", - sdp->sd_fsname, assertion, - sdp->sd_fsname, function, file, line); + fs_warn(sdp, "warning: assertion \"%s\" failed at function = %s, file = %s, line = %u\n", + assertion, function, file, line); if (sdp->sd_args.ar_debug) BUG(); @@ -138,10 +141,8 @@ int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function, { int rv; rv = gfs2_lm_withdraw(sdp, - "GFS2: fsid=%s: fatal: filesystem consistency error\n" - "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", - sdp->sd_fsname, - sdp->sd_fsname, function, file, line); + "fatal: filesystem consistency error - function = %s, file = %s, line = %u\n", + function, file, line); return rv; } @@ -157,13 +158,12 @@ int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide, struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); int rv; rv = gfs2_lm_withdraw(sdp, - "GFS2: fsid=%s: fatal: filesystem consistency error\n" - "GFS2: fsid=%s: inode = %llu %llu\n" - "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", - sdp->sd_fsname, - sdp->sd_fsname, (unsigned long long)ip->i_no_formal_ino, - (unsigned long long)ip->i_no_addr, - sdp->sd_fsname, function, file, line); + "fatal: filesystem consistency error\n" + " inode = %llu %llu\n" + " function = %s, file = %s, line = %u\n", + (unsigned long long)ip->i_no_formal_ino, + (unsigned long long)ip->i_no_addr, + function, file, line); return rv; } @@ -179,12 +179,11 @@ int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide, struct gfs2_sbd *sdp = rgd->rd_sbd; int rv; rv = gfs2_lm_withdraw(sdp, - "GFS2: fsid=%s: fatal: filesystem consistency error\n" - "GFS2: fsid=%s: RG = %llu\n" - "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", - sdp->sd_fsname, - sdp->sd_fsname, (unsigned long long)rgd->rd_addr, - sdp->sd_fsname, function, file, line); + "fatal: filesystem consistency error\n" + " RG = %llu\n" + " function = %s, file = %s, line = %u\n", + (unsigned long long)rgd->rd_addr, + function, file, line); return rv; } @@ -200,12 +199,11 @@ int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, { int me; me = gfs2_lm_withdraw(sdp, - "GFS2: fsid=%s: fatal: invalid metadata block\n" - "GFS2: fsid=%s: bh = %llu (%s)\n" - "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", - sdp->sd_fsname, - sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, - sdp->sd_fsname, function, file, line); + "fatal: invalid metadata block\n" + " bh = %llu (%s)\n" + " function = %s, file = %s, line = %u\n", + (unsigned long long)bh->b_blocknr, type, + function, file, line); return (me) ? -1 : -2; } @@ -221,12 +219,11 @@ int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, { int me; me = gfs2_lm_withdraw(sdp, - "GFS2: fsid=%s: fatal: invalid metadata block\n" - "GFS2: fsid=%s: bh = %llu (type: exp=%u, found=%u)\n" - "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", - sdp->sd_fsname, - sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, t, - sdp->sd_fsname, function, file, line); + "fatal: invalid metadata block\n" + " bh = %llu (type: exp=%u, found=%u)\n" + " function = %s, file = %s, line = %u\n", + (unsigned long long)bh->b_blocknr, type, t, + function, file, line); return (me) ? -1 : -2; } @@ -241,10 +238,9 @@ int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file, { int rv; rv = gfs2_lm_withdraw(sdp, - "GFS2: fsid=%s: fatal: I/O error\n" - "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", - sdp->sd_fsname, - sdp->sd_fsname, function, file, line); + "fatal: I/O error\n" + " function = %s, file = %s, line = %u\n", + function, file, line); return rv; } @@ -259,12 +255,11 @@ int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh, { int rv; rv = gfs2_lm_withdraw(sdp, - "GFS2: fsid=%s: fatal: I/O error\n" - "GFS2: fsid=%s: block = %llu\n" - "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", - sdp->sd_fsname, - sdp->sd_fsname, (unsigned long long)bh->b_blocknr, - sdp->sd_fsname, function, file, line); + "fatal: I/O error\n" + " block = %llu\n" + " function = %s, file = %s, line = %u\n", + (unsigned long long)bh->b_blocknr, + function, file, line); return rv; } diff --git a/fs/gfs2/util.h b/fs/gfs2/util.h index b7ffb09b99ea..cbdcbdf39614 100644 --- a/fs/gfs2/util.h +++ b/fs/gfs2/util.h @@ -10,22 +10,23 @@ #ifndef __UTIL_DOT_H__ #define __UTIL_DOT_H__ +#ifdef pr_fmt +#undef pr_fmt +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +#endif + #include <linux/mempool.h> #include "incore.h" -#define fs_printk(level, fs, fmt, arg...) \ - printk(level "GFS2: fsid=%s: " fmt , (fs)->sd_fsname , ## arg) - -#define fs_info(fs, fmt, arg...) \ - fs_printk(KERN_INFO , fs , fmt , ## arg) - -#define fs_warn(fs, fmt, arg...) \ - fs_printk(KERN_WARNING , fs , fmt , ## arg) - -#define fs_err(fs, fmt, arg...) \ - fs_printk(KERN_ERR, fs , fmt , ## arg) - +#define fs_emerg(fs, fmt, ...) \ + pr_emerg("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__) +#define fs_warn(fs, fmt, ...) \ + pr_warn("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__) +#define fs_err(fs, fmt, ...) \ + pr_err("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__) +#define fs_info(fs, fmt, ...) \ + pr_info("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__) void gfs2_assert_i(struct gfs2_sbd *sdp); @@ -85,7 +86,7 @@ static inline int gfs2_meta_check(struct gfs2_sbd *sdp, struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data; u32 magic = be32_to_cpu(mh->mh_magic); if (unlikely(magic != GFS2_MAGIC)) { - printk(KERN_ERR "GFS2: Magic number missing at %llu\n", + pr_err("Magic number missing at %llu\n", (unsigned long long)bh->b_blocknr); return -EIO; } @@ -164,7 +165,7 @@ static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt, #define gfs2_tune_get(sdp, field) \ gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field) -int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...); +__printf(2, 3) +int gfs2_lm_withdraw(struct gfs2_sbd *sdp, const char *fmt, ...); #endif /* __UTIL_DOT_H__ */ - diff --git a/fs/gfs2/xattr.c b/fs/gfs2/xattr.c index 8c6a6f6bdba9..0b81f783f787 100644 --- a/fs/gfs2/xattr.c +++ b/fs/gfs2/xattr.c @@ -13,6 +13,7 @@ #include <linux/buffer_head.h> #include <linux/xattr.h> #include <linux/gfs2_ondisk.h> +#include <linux/posix_acl_xattr.h> #include <asm/uaccess.h> #include "gfs2.h" @@ -1500,7 +1501,8 @@ static const struct xattr_handler gfs2_xattr_security_handler = { const struct xattr_handler *gfs2_xattr_handlers[] = { &gfs2_xattr_user_handler, &gfs2_xattr_security_handler, - &gfs2_xattr_system_handler, + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, NULL, }; diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c index 380ab31b5e0f..9e2fecd62f62 100644 --- a/fs/hfs/inode.c +++ b/fs/hfs/inode.c @@ -547,7 +547,7 @@ out: void hfs_evict_inode(struct inode *inode) { - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); if (HFS_IS_RSRC(inode) && HFS_I(inode)->rsrc_inode) { HFS_I(HFS_I(inode)->rsrc_inode)->rsrc_inode = NULL; diff --git a/fs/hfs/super.c b/fs/hfs/super.c index 2d2039e754cd..eee7206c38d1 100644 --- a/fs/hfs/super.c +++ b/fs/hfs/super.c @@ -112,6 +112,7 @@ static int hfs_statfs(struct dentry *dentry, struct kstatfs *buf) static int hfs_remount(struct super_block *sb, int *flags, char *data) { + sync_filesystem(sb); *flags |= MS_NODIRATIME; if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) return 0; diff --git a/fs/hfsplus/acl.h b/fs/hfsplus/acl.h index 07c0d4947527..95c8ed9ec17f 100644 --- a/fs/hfsplus/acl.h +++ b/fs/hfsplus/acl.h @@ -12,16 +12,13 @@ /* posix_acl.c */ struct posix_acl *hfsplus_get_posix_acl(struct inode *inode, int type); -extern int hfsplus_posix_acl_chmod(struct inode *); +int hfsplus_set_posix_acl(struct inode *inode, struct posix_acl *acl, + int type); extern int hfsplus_init_posix_acl(struct inode *, struct inode *); #else /* CONFIG_HFSPLUS_FS_POSIX_ACL */ #define hfsplus_get_posix_acl NULL - -static inline int hfsplus_posix_acl_chmod(struct inode *inode) -{ - return 0; -} +#define hfsplus_set_posix_acl NULL static inline int hfsplus_init_posix_acl(struct inode *inode, struct inode *dir) { diff --git a/fs/hfsplus/attributes.c b/fs/hfsplus/attributes.c index 0f47890299c4..caf89a7be0a1 100644 --- a/fs/hfsplus/attributes.c +++ b/fs/hfsplus/attributes.c @@ -11,7 +11,7 @@ static struct kmem_cache *hfsplus_attr_tree_cachep; -int hfsplus_create_attr_tree_cache(void) +int __init hfsplus_create_attr_tree_cache(void) { if (hfsplus_attr_tree_cachep) return -EEXIST; diff --git a/fs/hfsplus/catalog.c b/fs/hfsplus/catalog.c index 968ce411db53..32602c667b4a 100644 --- a/fs/hfsplus/catalog.c +++ b/fs/hfsplus/catalog.c @@ -103,6 +103,8 @@ static int hfsplus_cat_build_record(hfsplus_cat_entry *entry, folder = &entry->folder; memset(folder, 0, sizeof(*folder)); folder->type = cpu_to_be16(HFSPLUS_FOLDER); + if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags)) + folder->flags |= cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT); folder->id = cpu_to_be32(inode->i_ino); HFSPLUS_I(inode)->create_date = folder->create_date = @@ -203,6 +205,36 @@ int hfsplus_find_cat(struct super_block *sb, u32 cnid, return hfs_brec_find(fd, hfs_find_rec_by_key); } +static void hfsplus_subfolders_inc(struct inode *dir) +{ + struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb); + + if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags)) { + /* + * Increment subfolder count. Note, the value is only meaningful + * for folders with HFSPLUS_HAS_FOLDER_COUNT flag set. + */ + HFSPLUS_I(dir)->subfolders++; + } +} + +static void hfsplus_subfolders_dec(struct inode *dir) +{ + struct hfsplus_sb_info *sbi = HFSPLUS_SB(dir->i_sb); + + if (test_bit(HFSPLUS_SB_HFSX, &sbi->flags)) { + /* + * Decrement subfolder count. Note, the value is only meaningful + * for folders with HFSPLUS_HAS_FOLDER_COUNT flag set. + * + * Check for zero. Some subfolders may have been created + * by an implementation ignorant of this counter. + */ + if (HFSPLUS_I(dir)->subfolders) + HFSPLUS_I(dir)->subfolders--; + } +} + int hfsplus_create_cat(u32 cnid, struct inode *dir, struct qstr *str, struct inode *inode) { @@ -247,6 +279,8 @@ int hfsplus_create_cat(u32 cnid, struct inode *dir, goto err1; dir->i_size++; + if (S_ISDIR(inode->i_mode)) + hfsplus_subfolders_inc(dir); dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC; hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY); @@ -336,6 +370,8 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str) goto out; dir->i_size--; + if (type == HFSPLUS_FOLDER) + hfsplus_subfolders_dec(dir); dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC; hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY); @@ -380,6 +416,7 @@ int hfsplus_rename_cat(u32 cnid, hfs_bnode_read(src_fd.bnode, &entry, src_fd.entryoffset, src_fd.entrylength); + type = be16_to_cpu(entry.type); /* create new dir entry with the data from the old entry */ hfsplus_cat_build_key(sb, dst_fd.search_key, dst_dir->i_ino, dst_name); @@ -394,6 +431,8 @@ int hfsplus_rename_cat(u32 cnid, if (err) goto out; dst_dir->i_size++; + if (type == HFSPLUS_FOLDER) + hfsplus_subfolders_inc(dst_dir); dst_dir->i_mtime = dst_dir->i_ctime = CURRENT_TIME_SEC; /* finally remove the old entry */ @@ -405,6 +444,8 @@ int hfsplus_rename_cat(u32 cnid, if (err) goto out; src_dir->i_size--; + if (type == HFSPLUS_FOLDER) + hfsplus_subfolders_dec(src_dir); src_dir->i_mtime = src_dir->i_ctime = CURRENT_TIME_SEC; /* remove old thread entry */ diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c index 4a4fea002673..bdec66522de3 100644 --- a/fs/hfsplus/dir.c +++ b/fs/hfsplus/dir.c @@ -529,9 +529,10 @@ const struct inode_operations hfsplus_dir_inode_operations = { .setxattr = generic_setxattr, .getxattr = generic_getxattr, .listxattr = hfsplus_listxattr, - .removexattr = hfsplus_removexattr, + .removexattr = generic_removexattr, #ifdef CONFIG_HFSPLUS_FS_POSIX_ACL .get_acl = hfsplus_get_posix_acl, + .set_acl = hfsplus_set_posix_acl, #endif }; diff --git a/fs/hfsplus/extents.c b/fs/hfsplus/extents.c index fbb212fbb1ef..a7aafb35b624 100644 --- a/fs/hfsplus/extents.c +++ b/fs/hfsplus/extents.c @@ -227,10 +227,8 @@ int hfsplus_get_block(struct inode *inode, sector_t iblock, u32 ablock, dblock, mask; sector_t sector; int was_dirty = 0; - int shift; /* Convert inode block to disk allocation block */ - shift = sbi->alloc_blksz_shift - sb->s_blocksize_bits; ablock = iblock >> sbi->fs_shift; if (iblock >= hip->fs_blocks) { @@ -498,11 +496,13 @@ int hfsplus_file_extend(struct inode *inode) goto insert_extent; } out: - mutex_unlock(&hip->extents_lock); if (!res) { hip->alloc_blocks += len; + mutex_unlock(&hip->extents_lock); hfsplus_mark_inode_dirty(inode, HFSPLUS_I_ALLOC_DIRTY); + return 0; } + mutex_unlock(&hip->extents_lock); return res; insert_extent: @@ -556,11 +556,13 @@ void hfsplus_file_truncate(struct inode *inode) blk_cnt = (inode->i_size + HFSPLUS_SB(sb)->alloc_blksz - 1) >> HFSPLUS_SB(sb)->alloc_blksz_shift; + + mutex_lock(&hip->extents_lock); + alloc_cnt = hip->alloc_blocks; if (blk_cnt == alloc_cnt) - goto out; + goto out_unlock; - mutex_lock(&hip->extents_lock); res = hfs_find_init(HFSPLUS_SB(sb)->ext_tree, &fd); if (res) { mutex_unlock(&hip->extents_lock); @@ -592,10 +594,10 @@ void hfsplus_file_truncate(struct inode *inode) hfs_brec_remove(&fd); } hfs_find_exit(&fd); - mutex_unlock(&hip->extents_lock); hip->alloc_blocks = blk_cnt; -out: +out_unlock: + mutex_unlock(&hip->extents_lock); hip->phys_size = inode->i_size; hip->fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h index 08846425b67f..83dc29286b10 100644 --- a/fs/hfsplus/hfsplus_fs.h +++ b/fs/hfsplus/hfsplus_fs.h @@ -242,6 +242,7 @@ struct hfsplus_inode_info { */ sector_t fs_blocks; u8 userflags; /* BSD user file flags */ + u32 subfolders; /* Subfolder count (HFSX only) */ struct list_head open_dir_list; loff_t phys_size; @@ -366,7 +367,7 @@ typedef int (*search_strategy_t)(struct hfs_bnode *, */ /* attributes.c */ -int hfsplus_create_attr_tree_cache(void); +int __init hfsplus_create_attr_tree_cache(void); void hfsplus_destroy_attr_tree_cache(void); hfsplus_attr_entry *hfsplus_alloc_attr_entry(void); void hfsplus_destroy_attr_entry(hfsplus_attr_entry *entry_p); diff --git a/fs/hfsplus/hfsplus_raw.h b/fs/hfsplus/hfsplus_raw.h index 8ffb3a8ffe75..5a126828d85e 100644 --- a/fs/hfsplus/hfsplus_raw.h +++ b/fs/hfsplus/hfsplus_raw.h @@ -261,7 +261,7 @@ struct hfsplus_cat_folder { struct DInfo user_info; struct DXInfo finder_info; __be32 text_encoding; - u32 reserved; + __be32 subfolders; /* Subfolder count in HFSX. Reserved in HFS+. */ } __packed; /* HFS file info (stolen from hfs.h) */ @@ -301,11 +301,13 @@ struct hfsplus_cat_file { struct hfsplus_fork_raw rsrc_fork; } __packed; -/* File attribute bits */ +/* File and folder flag bits */ #define HFSPLUS_FILE_LOCKED 0x0001 #define HFSPLUS_FILE_THREAD_EXISTS 0x0002 #define HFSPLUS_XATTR_EXISTS 0x0004 #define HFSPLUS_ACL_EXISTS 0x0008 +#define HFSPLUS_HAS_FOLDER_COUNT 0x0010 /* Folder has subfolder count + * (HFSX only) */ /* HFS+ catalog thread (part of a cat_entry) */ struct hfsplus_cat_thread { diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c index 37213d075f3c..a4f45bd88a63 100644 --- a/fs/hfsplus/inode.c +++ b/fs/hfsplus/inode.c @@ -178,64 +178,6 @@ const struct dentry_operations hfsplus_dentry_operations = { .d_compare = hfsplus_compare_dentry, }; -static struct dentry *hfsplus_file_lookup(struct inode *dir, - struct dentry *dentry, unsigned int flags) -{ - struct hfs_find_data fd; - struct super_block *sb = dir->i_sb; - struct inode *inode = NULL; - struct hfsplus_inode_info *hip; - int err; - - if (HFSPLUS_IS_RSRC(dir) || strcmp(dentry->d_name.name, "rsrc")) - goto out; - - inode = HFSPLUS_I(dir)->rsrc_inode; - if (inode) - goto out; - - inode = new_inode(sb); - if (!inode) - return ERR_PTR(-ENOMEM); - - hip = HFSPLUS_I(inode); - inode->i_ino = dir->i_ino; - INIT_LIST_HEAD(&hip->open_dir_list); - mutex_init(&hip->extents_lock); - hip->extent_state = 0; - hip->flags = 0; - hip->userflags = 0; - set_bit(HFSPLUS_I_RSRC, &hip->flags); - - err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); - if (!err) { - err = hfsplus_find_cat(sb, dir->i_ino, &fd); - if (!err) - err = hfsplus_cat_read_inode(inode, &fd); - hfs_find_exit(&fd); - } - if (err) { - iput(inode); - return ERR_PTR(err); - } - hip->rsrc_inode = dir; - HFSPLUS_I(dir)->rsrc_inode = inode; - igrab(dir); - - /* - * __mark_inode_dirty expects inodes to be hashed. Since we don't - * want resource fork inodes in the regular inode space, we make them - * appear hashed, but do not put on any lists. hlist_del() - * will work fine and require no locking. - */ - hlist_add_fake(&inode->i_hash); - - mark_inode_dirty(inode); -out: - d_add(dentry, inode); - return NULL; -} - static void hfsplus_get_perms(struct inode *inode, struct hfsplus_perm *perms, int dir) { @@ -319,7 +261,7 @@ static int hfsplus_setattr(struct dentry *dentry, struct iattr *attr) mark_inode_dirty(inode); if (attr->ia_valid & ATTR_MODE) { - error = hfsplus_posix_acl_chmod(inode); + error = posix_acl_chmod(inode, inode->i_mode); if (unlikely(error)) return error; } @@ -385,14 +327,14 @@ int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, } static const struct inode_operations hfsplus_file_inode_operations = { - .lookup = hfsplus_file_lookup, .setattr = hfsplus_setattr, .setxattr = generic_setxattr, .getxattr = generic_getxattr, .listxattr = hfsplus_listxattr, - .removexattr = hfsplus_removexattr, + .removexattr = generic_removexattr, #ifdef CONFIG_HFSPLUS_FS_POSIX_ACL .get_acl = hfsplus_get_posix_acl, + .set_acl = hfsplus_set_posix_acl, #endif }; @@ -433,6 +375,7 @@ struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode) hip->extent_state = 0; hip->flags = 0; hip->userflags = 0; + hip->subfolders = 0; memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec)); memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); hip->alloc_blocks = 0; @@ -552,6 +495,10 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date); HFSPLUS_I(inode)->create_date = folder->create_date; HFSPLUS_I(inode)->fs_blocks = 0; + if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { + HFSPLUS_I(inode)->subfolders = + be32_to_cpu(folder->subfolders); + } inode->i_op = &hfsplus_dir_inode_operations; inode->i_fop = &hfsplus_dir_operations; } else if (type == HFSPLUS_FILE) { @@ -624,6 +571,10 @@ int hfsplus_cat_write_inode(struct inode *inode) folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); folder->valence = cpu_to_be32(inode->i_size - 2); + if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { + folder->subfolders = + cpu_to_be32(HFSPLUS_I(inode)->subfolders); + } hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, sizeof(struct hfsplus_cat_folder)); } else if (HFSPLUS_IS_RSRC(inode)) { diff --git a/fs/hfsplus/options.c b/fs/hfsplus/options.c index 968eab5bc1f5..68537e8b7a09 100644 --- a/fs/hfsplus/options.c +++ b/fs/hfsplus/options.c @@ -75,7 +75,7 @@ int hfsplus_parse_options_remount(char *input, int *force) int token; if (!input) - return 0; + return 1; while ((p = strsep(&input, ",")) != NULL) { if (!*p) diff --git a/fs/hfsplus/posix_acl.c b/fs/hfsplus/posix_acl.c index b609cc14c72e..df0c9af68d05 100644 --- a/fs/hfsplus/posix_acl.c +++ b/fs/hfsplus/posix_acl.c @@ -17,9 +17,7 @@ struct posix_acl *hfsplus_get_posix_acl(struct inode *inode, int type) char *value = NULL; ssize_t size; - acl = get_cached_acl(inode, type); - if (acl != ACL_NOT_CACHED) - return acl; + hfs_dbg(ACL_MOD, "[%s]: ino %lu\n", __func__, inode->i_ino); switch (type) { case ACL_TYPE_ACCESS: @@ -56,17 +54,15 @@ struct posix_acl *hfsplus_get_posix_acl(struct inode *inode, int type) return acl; } -static int hfsplus_set_posix_acl(struct inode *inode, - int type, - struct posix_acl *acl) +int hfsplus_set_posix_acl(struct inode *inode, struct posix_acl *acl, + int type) { int err; char *xattr_name; size_t size = 0; char *value = NULL; - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; + hfs_dbg(ACL_MOD, "[%s]: ino %lu\n", __func__, inode->i_ino); switch (type) { case ACL_TYPE_ACCESS: @@ -115,7 +111,7 @@ end_set_acl: int hfsplus_init_posix_acl(struct inode *inode, struct inode *dir) { int err = 0; - struct posix_acl *acl = NULL; + struct posix_acl *default_acl, *acl; hfs_dbg(ACL_MOD, "[%s]: ino %lu, dir->ino %lu\n", @@ -124,151 +120,21 @@ int hfsplus_init_posix_acl(struct inode *inode, struct inode *dir) if (S_ISLNK(inode->i_mode)) return 0; - acl = hfsplus_get_posix_acl(dir, ACL_TYPE_DEFAULT); - if (IS_ERR(acl)) - return PTR_ERR(acl); - - if (acl) { - if (S_ISDIR(inode->i_mode)) { - err = hfsplus_set_posix_acl(inode, - ACL_TYPE_DEFAULT, - acl); - if (unlikely(err)) - goto init_acl_cleanup; - } - - err = posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); - if (unlikely(err < 0)) - return err; - - if (err > 0) - err = hfsplus_set_posix_acl(inode, - ACL_TYPE_ACCESS, - acl); - } else - inode->i_mode &= ~current_umask(); - -init_acl_cleanup: - posix_acl_release(acl); - return err; -} - -int hfsplus_posix_acl_chmod(struct inode *inode) -{ - int err; - struct posix_acl *acl; - - hfs_dbg(ACL_MOD, "[%s]: ino %lu\n", __func__, inode->i_ino); - - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - - acl = hfsplus_get_posix_acl(inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl) || !acl) - return PTR_ERR(acl); - - err = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); - if (unlikely(err)) + err = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl); + if (err) return err; - err = hfsplus_set_posix_acl(inode, ACL_TYPE_ACCESS, acl); - posix_acl_release(acl); - return err; -} - -static int hfsplus_xattr_get_posix_acl(struct dentry *dentry, - const char *name, - void *buffer, - size_t size, - int type) -{ - int err = 0; - struct posix_acl *acl; - - hfs_dbg(ACL_MOD, - "[%s]: ino %lu, buffer %p, size %zu, type %#x\n", - __func__, dentry->d_inode->i_ino, buffer, size, type); - - if (strcmp(name, "") != 0) - return -EINVAL; - - acl = hfsplus_get_posix_acl(dentry->d_inode, type); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl == NULL) - return -ENODATA; - - err = posix_acl_to_xattr(&init_user_ns, acl, buffer, size); - posix_acl_release(acl); - - return err; -} - -static int hfsplus_xattr_set_posix_acl(struct dentry *dentry, - const char *name, - const void *value, - size_t size, - int flags, - int type) -{ - int err = 0; - struct inode *inode = dentry->d_inode; - struct posix_acl *acl = NULL; - - hfs_dbg(ACL_MOD, - "[%s]: ino %lu, value %p, size %zu, flags %#x, type %#x\n", - __func__, inode->i_ino, value, size, flags, type); - - if (strcmp(name, "") != 0) - return -EINVAL; - - if (!inode_owner_or_capable(inode)) - return -EPERM; - - if (value) { - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (IS_ERR(acl)) - return PTR_ERR(acl); - else if (acl) { - err = posix_acl_valid(acl); - if (err) - goto end_xattr_set_acl; - } + if (default_acl) { + err = hfsplus_set_posix_acl(inode, default_acl, + ACL_TYPE_DEFAULT); + posix_acl_release(default_acl); } - err = hfsplus_set_posix_acl(inode, type, acl); - -end_xattr_set_acl: - posix_acl_release(acl); + if (acl) { + if (!err) + err = hfsplus_set_posix_acl(inode, acl, + ACL_TYPE_ACCESS); + posix_acl_release(acl); + } return err; } - -static size_t hfsplus_xattr_list_posix_acl(struct dentry *dentry, - char *list, - size_t list_size, - const char *name, - size_t name_len, - int type) -{ - /* - * This method is not used. - * It is used hfsplus_listxattr() instead of generic_listxattr(). - */ - return -EOPNOTSUPP; -} - -const struct xattr_handler hfsplus_xattr_acl_access_handler = { - .prefix = POSIX_ACL_XATTR_ACCESS, - .flags = ACL_TYPE_ACCESS, - .list = hfsplus_xattr_list_posix_acl, - .get = hfsplus_xattr_get_posix_acl, - .set = hfsplus_xattr_set_posix_acl, -}; - -const struct xattr_handler hfsplus_xattr_acl_default_handler = { - .prefix = POSIX_ACL_XATTR_DEFAULT, - .flags = ACL_TYPE_DEFAULT, - .list = hfsplus_xattr_list_posix_acl, - .get = hfsplus_xattr_get_posix_acl, - .set = hfsplus_xattr_set_posix_acl, -}; diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c index 80875aa640ef..a513d2d36be9 100644 --- a/fs/hfsplus/super.c +++ b/fs/hfsplus/super.c @@ -161,7 +161,7 @@ static int hfsplus_write_inode(struct inode *inode, static void hfsplus_evict_inode(struct inode *inode) { hfs_dbg(INODE, "hfsplus_evict_inode: %lu\n", inode->i_ino); - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); if (HFSPLUS_IS_RSRC(inode)) { HFSPLUS_I(HFSPLUS_I(inode)->rsrc_inode)->rsrc_inode = NULL; @@ -323,6 +323,7 @@ static int hfsplus_statfs(struct dentry *dentry, struct kstatfs *buf) static int hfsplus_remount(struct super_block *sb, int *flags, char *data) { + sync_filesystem(sb); if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) return 0; if (!(*flags & MS_RDONLY)) { diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c index e9a97a0d4314..3f999649587f 100644 --- a/fs/hfsplus/wrapper.c +++ b/fs/hfsplus/wrapper.c @@ -63,7 +63,7 @@ int hfsplus_submit_bio(struct super_block *sb, sector_t sector, sector &= ~((io_size >> HFSPLUS_SECTOR_SHIFT) - 1); bio = bio_alloc(GFP_NOIO, 1); - bio->bi_sector = sector; + bio->bi_iter.bi_sector = sector; bio->bi_bdev = sb->s_bdev; if (!(rw & WRITE) && data) diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c index 3c6136f98c73..4e27edc082a4 100644 --- a/fs/hfsplus/xattr.c +++ b/fs/hfsplus/xattr.c @@ -7,16 +7,19 @@ */ #include "hfsplus_fs.h" +#include <linux/posix_acl_xattr.h> #include "xattr.h" #include "acl.h" +static int hfsplus_removexattr(struct inode *inode, const char *name); + const struct xattr_handler *hfsplus_xattr_handlers[] = { &hfsplus_xattr_osx_handler, &hfsplus_xattr_user_handler, &hfsplus_xattr_trusted_handler, #ifdef CONFIG_HFSPLUS_FS_POSIX_ACL - &hfsplus_xattr_acl_access_handler, - &hfsplus_xattr_acl_default_handler, + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, #endif &hfsplus_xattr_security_handler, NULL @@ -51,82 +54,6 @@ static inline int is_known_namespace(const char *name) return true; } -static int can_set_system_xattr(struct inode *inode, const char *name, - const void *value, size_t size) -{ -#ifdef CONFIG_HFSPLUS_FS_POSIX_ACL - struct posix_acl *acl; - int err; - - if (!inode_owner_or_capable(inode)) - return -EPERM; - - /* - * POSIX_ACL_XATTR_ACCESS is tied to i_mode - */ - if (strcmp(name, POSIX_ACL_XATTR_ACCESS) == 0) { - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl) { - err = posix_acl_equiv_mode(acl, &inode->i_mode); - posix_acl_release(acl); - if (err < 0) - return err; - mark_inode_dirty(inode); - } - /* - * We're changing the ACL. Get rid of the cached one - */ - forget_cached_acl(inode, ACL_TYPE_ACCESS); - - return 0; - } else if (strcmp(name, POSIX_ACL_XATTR_DEFAULT) == 0) { - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (IS_ERR(acl)) - return PTR_ERR(acl); - posix_acl_release(acl); - - /* - * We're changing the default ACL. Get rid of the cached one - */ - forget_cached_acl(inode, ACL_TYPE_DEFAULT); - - return 0; - } -#endif /* CONFIG_HFSPLUS_FS_POSIX_ACL */ - return -EOPNOTSUPP; -} - -static int can_set_xattr(struct inode *inode, const char *name, - const void *value, size_t value_len) -{ - if (!strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN)) - return can_set_system_xattr(inode, name, value, value_len); - - if (!strncmp(name, XATTR_MAC_OSX_PREFIX, XATTR_MAC_OSX_PREFIX_LEN)) { - /* - * This makes sure that we aren't trying to set an - * attribute in a different namespace by prefixing it - * with "osx." - */ - if (is_known_namespace(name + XATTR_MAC_OSX_PREFIX_LEN)) - return -EOPNOTSUPP; - - return 0; - } - - /* - * Don't allow setting an attribute in an unknown namespace. - */ - if (strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) && - strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) && - strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) - return -EOPNOTSUPP; - - return 0; -} - static void hfsplus_init_header_node(struct inode *attr_file, u32 clump_size, char *buf, u16 node_size) @@ -349,18 +276,8 @@ int __hfsplus_setxattr(struct inode *inode, const char *name, HFSPLUS_IS_RSRC(inode)) return -EOPNOTSUPP; - err = can_set_xattr(inode, name, value, size); - if (err) - return err; - - if (strncmp(name, XATTR_MAC_OSX_PREFIX, - XATTR_MAC_OSX_PREFIX_LEN) == 0) - name += XATTR_MAC_OSX_PREFIX_LEN; - - if (value == NULL) { - value = ""; - size = 0; - } + if (value == NULL) + return hfsplus_removexattr(inode, name); err = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &cat_fd); if (err) { @@ -478,16 +395,11 @@ end_setxattr: return err; } -static inline int is_osx_xattr(const char *xattr_name) -{ - return !is_known_namespace(xattr_name); -} - static int name_len(const char *xattr_name, int xattr_name_len) { int len = xattr_name_len + 1; - if (is_osx_xattr(xattr_name)) + if (!is_known_namespace(xattr_name)) len += XATTR_MAC_OSX_PREFIX_LEN; return len; @@ -498,7 +410,7 @@ static int copy_name(char *buffer, const char *xattr_name, int name_len) int len = name_len; int offset = 0; - if (is_osx_xattr(xattr_name)) { + if (!is_known_namespace(xattr_name)) { strncpy(buffer, XATTR_MAC_OSX_PREFIX, XATTR_MAC_OSX_PREFIX_LEN); offset += XATTR_MAC_OSX_PREFIX_LEN; len += XATTR_MAC_OSX_PREFIX_LEN; @@ -576,18 +488,6 @@ ssize_t __hfsplus_getxattr(struct inode *inode, const char *name, HFSPLUS_IS_RSRC(inode)) return -EOPNOTSUPP; - if (strncmp(name, XATTR_MAC_OSX_PREFIX, - XATTR_MAC_OSX_PREFIX_LEN) == 0) { - /* skip "osx." prefix */ - name += XATTR_MAC_OSX_PREFIX_LEN; - /* - * Don't allow retrieving properly prefixed attributes - * by prepending them with "osx." - */ - if (is_known_namespace(name)) - return -EOPNOTSUPP; - } - if (!strcmp_xattr_finder_info(name)) return hfsplus_getxattr_finder_info(inode, value, size); @@ -822,32 +722,18 @@ end_listxattr: return res; } -int hfsplus_removexattr(struct dentry *dentry, const char *name) +static int hfsplus_removexattr(struct inode *inode, const char *name) { int err = 0; - struct inode *inode = dentry->d_inode; struct hfs_find_data cat_fd; u16 flags; u16 cat_entry_type; int is_xattr_acl_deleted = 0; int is_all_xattrs_deleted = 0; - if ((!S_ISREG(inode->i_mode) && - !S_ISDIR(inode->i_mode)) || - HFSPLUS_IS_RSRC(inode)) - return -EOPNOTSUPP; - if (!HFSPLUS_SB(inode->i_sb)->attr_tree) return -EOPNOTSUPP; - err = can_set_xattr(inode, name, NULL, 0); - if (err) - return err; - - if (strncmp(name, XATTR_MAC_OSX_PREFIX, - XATTR_MAC_OSX_PREFIX_LEN) == 0) - name += XATTR_MAC_OSX_PREFIX_LEN; - if (!strcmp_xattr_finder_info(name)) return -EOPNOTSUPP; @@ -921,8 +807,12 @@ static int hfsplus_osx_getxattr(struct dentry *dentry, const char *name, if (len > HFSPLUS_ATTR_MAX_STRLEN) return -EOPNOTSUPP; - strcpy(xattr_name, XATTR_MAC_OSX_PREFIX); - strcpy(xattr_name + XATTR_MAC_OSX_PREFIX_LEN, name); + /* + * Don't allow retrieving properly prefixed attributes + * by prepending them with "osx." + */ + if (is_known_namespace(name)) + return -EOPNOTSUPP; return hfsplus_getxattr(dentry, xattr_name, buffer, size); } @@ -940,8 +830,12 @@ static int hfsplus_osx_setxattr(struct dentry *dentry, const char *name, if (len > HFSPLUS_ATTR_MAX_STRLEN) return -EOPNOTSUPP; - strcpy(xattr_name, XATTR_MAC_OSX_PREFIX); - strcpy(xattr_name + XATTR_MAC_OSX_PREFIX_LEN, name); + /* + * Don't allow setting properly prefixed attributes + * by prepending them with "osx." + */ + if (is_known_namespace(name)) + return -EOPNOTSUPP; return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); } diff --git a/fs/hfsplus/xattr.h b/fs/hfsplus/xattr.h index 841b5698c0fc..288530cf80b5 100644 --- a/fs/hfsplus/xattr.h +++ b/fs/hfsplus/xattr.h @@ -14,8 +14,6 @@ extern const struct xattr_handler hfsplus_xattr_osx_handler; extern const struct xattr_handler hfsplus_xattr_user_handler; extern const struct xattr_handler hfsplus_xattr_trusted_handler; -extern const struct xattr_handler hfsplus_xattr_acl_access_handler; -extern const struct xattr_handler hfsplus_xattr_acl_default_handler; extern const struct xattr_handler hfsplus_xattr_security_handler; extern const struct xattr_handler *hfsplus_xattr_handlers[]; @@ -42,8 +40,6 @@ static inline ssize_t hfsplus_getxattr(struct dentry *dentry, ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size); -int hfsplus_removexattr(struct dentry *dentry, const char *name); - int hfsplus_init_security(struct inode *inode, struct inode *dir, const struct qstr *qstr); diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index db23ce1bd903..9c470fde9878 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -186,7 +186,7 @@ static struct inode *hostfs_iget(struct super_block *sb) return inode; } -int hostfs_statfs(struct dentry *dentry, struct kstatfs *sf) +static int hostfs_statfs(struct dentry *dentry, struct kstatfs *sf) { /* * do_statfs uses struct statfs64 internally, but the linux kernel @@ -230,7 +230,7 @@ static struct inode *hostfs_alloc_inode(struct super_block *sb) static void hostfs_evict_inode(struct inode *inode) { - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); if (HOSTFS_I(inode)->fd != -1) { close_file(&HOSTFS_I(inode)->fd); @@ -268,7 +268,7 @@ static const struct super_operations hostfs_sbops = { .show_options = hostfs_show_options, }; -int hostfs_readdir(struct file *file, struct dir_context *ctx) +static int hostfs_readdir(struct file *file, struct dir_context *ctx) { void *dir; char *name; @@ -293,7 +293,7 @@ int hostfs_readdir(struct file *file, struct dir_context *ctx) return 0; } -int hostfs_file_open(struct inode *ino, struct file *file) +static int hostfs_file_open(struct inode *ino, struct file *file) { static DEFINE_MUTEX(open_mutex); char *name; @@ -359,7 +359,8 @@ static int hostfs_file_release(struct inode *inode, struct file *file) return 0; } -int hostfs_fsync(struct file *file, loff_t start, loff_t end, int datasync) +static int hostfs_fsync(struct file *file, loff_t start, loff_t end, + int datasync) { struct inode *inode = file->f_mapping->host; int ret; @@ -394,7 +395,7 @@ static const struct file_operations hostfs_dir_fops = { .read = generic_read_dir, }; -int hostfs_writepage(struct page *page, struct writeback_control *wbc) +static int hostfs_writepage(struct page *page, struct writeback_control *wbc) { struct address_space *mapping = page->mapping; struct inode *inode = mapping->host; @@ -430,7 +431,7 @@ int hostfs_writepage(struct page *page, struct writeback_control *wbc) return err; } -int hostfs_readpage(struct file *file, struct page *page) +static int hostfs_readpage(struct file *file, struct page *page) { char *buffer; long long start; @@ -455,9 +456,9 @@ int hostfs_readpage(struct file *file, struct page *page) return err; } -int hostfs_write_begin(struct file *file, struct address_space *mapping, - loff_t pos, unsigned len, unsigned flags, - struct page **pagep, void **fsdata) +static int hostfs_write_begin(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned flags, + struct page **pagep, void **fsdata) { pgoff_t index = pos >> PAGE_CACHE_SHIFT; @@ -467,9 +468,9 @@ int hostfs_write_begin(struct file *file, struct address_space *mapping, return 0; } -int hostfs_write_end(struct file *file, struct address_space *mapping, - loff_t pos, unsigned len, unsigned copied, - struct page *page, void *fsdata) +static int hostfs_write_end(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned copied, + struct page *page, void *fsdata) { struct inode *inode = mapping->host; void *buffer; @@ -549,8 +550,8 @@ static int read_name(struct inode *ino, char *name) return 0; } -int hostfs_create(struct inode *dir, struct dentry *dentry, umode_t mode, - bool excl) +static int hostfs_create(struct inode *dir, struct dentry *dentry, umode_t mode, + bool excl) { struct inode *inode; char *name; @@ -591,8 +592,8 @@ int hostfs_create(struct inode *dir, struct dentry *dentry, umode_t mode, return error; } -struct dentry *hostfs_lookup(struct inode *ino, struct dentry *dentry, - unsigned int flags) +static struct dentry *hostfs_lookup(struct inode *ino, struct dentry *dentry, + unsigned int flags) { struct inode *inode; char *name; @@ -628,7 +629,8 @@ struct dentry *hostfs_lookup(struct inode *ino, struct dentry *dentry, return ERR_PTR(err); } -int hostfs_link(struct dentry *to, struct inode *ino, struct dentry *from) +static int hostfs_link(struct dentry *to, struct inode *ino, + struct dentry *from) { char *from_name, *to_name; int err; @@ -646,7 +648,7 @@ int hostfs_link(struct dentry *to, struct inode *ino, struct dentry *from) return err; } -int hostfs_unlink(struct inode *ino, struct dentry *dentry) +static int hostfs_unlink(struct inode *ino, struct dentry *dentry) { char *file; int err; @@ -662,7 +664,8 @@ int hostfs_unlink(struct inode *ino, struct dentry *dentry) return err; } -int hostfs_symlink(struct inode *ino, struct dentry *dentry, const char *to) +static int hostfs_symlink(struct inode *ino, struct dentry *dentry, + const char *to) { char *file; int err; @@ -674,7 +677,7 @@ int hostfs_symlink(struct inode *ino, struct dentry *dentry, const char *to) return err; } -int hostfs_mkdir(struct inode *ino, struct dentry *dentry, umode_t mode) +static int hostfs_mkdir(struct inode *ino, struct dentry *dentry, umode_t mode) { char *file; int err; @@ -686,7 +689,7 @@ int hostfs_mkdir(struct inode *ino, struct dentry *dentry, umode_t mode) return err; } -int hostfs_rmdir(struct inode *ino, struct dentry *dentry) +static int hostfs_rmdir(struct inode *ino, struct dentry *dentry) { char *file; int err; @@ -738,8 +741,8 @@ static int hostfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, return err; } -int hostfs_rename(struct inode *from_ino, struct dentry *from, - struct inode *to_ino, struct dentry *to) +static int hostfs_rename(struct inode *from_ino, struct dentry *from, + struct inode *to_ino, struct dentry *to) { char *from_name, *to_name; int err; @@ -756,7 +759,7 @@ int hostfs_rename(struct inode *from_ino, struct dentry *from, return err; } -int hostfs_permission(struct inode *ino, int desired) +static int hostfs_permission(struct inode *ino, int desired) { char *name; int r = 0, w = 0, x = 0, err; @@ -782,7 +785,7 @@ int hostfs_permission(struct inode *ino, int desired) return err; } -int hostfs_setattr(struct dentry *dentry, struct iattr *attr) +static int hostfs_setattr(struct dentry *dentry, struct iattr *attr) { struct inode *inode = dentry->d_inode; struct hostfs_iattr attrs; diff --git a/fs/hpfs/alloc.c b/fs/hpfs/alloc.c index cdb84a838068..58b5106186d0 100644 --- a/fs/hpfs/alloc.c +++ b/fs/hpfs/alloc.c @@ -8,6 +8,58 @@ #include "hpfs_fn.h" +static void hpfs_claim_alloc(struct super_block *s, secno sec) +{ + struct hpfs_sb_info *sbi = hpfs_sb(s); + if (sbi->sb_n_free != (unsigned)-1) { + if (unlikely(!sbi->sb_n_free)) { + hpfs_error(s, "free count underflow, allocating sector %08x", sec); + sbi->sb_n_free = -1; + return; + } + sbi->sb_n_free--; + } +} + +static void hpfs_claim_free(struct super_block *s, secno sec) +{ + struct hpfs_sb_info *sbi = hpfs_sb(s); + if (sbi->sb_n_free != (unsigned)-1) { + if (unlikely(sbi->sb_n_free >= sbi->sb_fs_size)) { + hpfs_error(s, "free count overflow, freeing sector %08x", sec); + sbi->sb_n_free = -1; + return; + } + sbi->sb_n_free++; + } +} + +static void hpfs_claim_dirband_alloc(struct super_block *s, secno sec) +{ + struct hpfs_sb_info *sbi = hpfs_sb(s); + if (sbi->sb_n_free_dnodes != (unsigned)-1) { + if (unlikely(!sbi->sb_n_free_dnodes)) { + hpfs_error(s, "dirband free count underflow, allocating sector %08x", sec); + sbi->sb_n_free_dnodes = -1; + return; + } + sbi->sb_n_free_dnodes--; + } +} + +static void hpfs_claim_dirband_free(struct super_block *s, secno sec) +{ + struct hpfs_sb_info *sbi = hpfs_sb(s); + if (sbi->sb_n_free_dnodes != (unsigned)-1) { + if (unlikely(sbi->sb_n_free_dnodes >= sbi->sb_dirband_size / 4)) { + hpfs_error(s, "dirband free count overflow, freeing sector %08x", sec); + sbi->sb_n_free_dnodes = -1; + return; + } + sbi->sb_n_free_dnodes++; + } +} + /* * Check if a sector is allocated in bitmap * This is really slow. Turned on only if chk==2 @@ -203,9 +255,15 @@ secno hpfs_alloc_sector(struct super_block *s, secno near, unsigned n, int forwa } sec = 0; ret: + if (sec) { + i = 0; + do + hpfs_claim_alloc(s, sec + i); + while (unlikely(++i < n)); + } if (sec && f_p) { for (i = 0; i < forward; i++) { - if (!hpfs_alloc_if_possible(s, sec + i + 1)) { + if (!hpfs_alloc_if_possible(s, sec + n + i)) { hpfs_error(s, "Prealloc doesn't work! Wanted %d, allocated at %08x, can't allocate %d", forward, sec, i); sec = 0; break; @@ -228,6 +286,7 @@ static secno alloc_in_dirband(struct super_block *s, secno near) nr >>= 2; sec = alloc_in_bmp(s, (~0x3fff) | nr, 1, 0); if (!sec) return 0; + hpfs_claim_dirband_alloc(s, sec); return ((sec & 0x3fff) << 2) + sbi->sb_dirband_start; } @@ -242,6 +301,7 @@ int hpfs_alloc_if_possible(struct super_block *s, secno sec) bmp[(sec & 0x3fff) >> 5] &= cpu_to_le32(~(1 << (sec & 0x1f))); hpfs_mark_4buffers_dirty(&qbh); hpfs_brelse4(&qbh); + hpfs_claim_alloc(s, sec); return 1; } hpfs_brelse4(&qbh); @@ -275,6 +335,7 @@ void hpfs_free_sectors(struct super_block *s, secno sec, unsigned n) return; } bmp[(sec & 0x3fff) >> 5] |= cpu_to_le32(1 << (sec & 0x1f)); + hpfs_claim_free(s, sec); if (!--n) { hpfs_mark_4buffers_dirty(&qbh); hpfs_brelse4(&qbh); @@ -359,6 +420,7 @@ void hpfs_free_dnode(struct super_block *s, dnode_secno dno) bmp[ssec >> 5] |= cpu_to_le32(1 << (ssec & 0x1f)); hpfs_mark_4buffers_dirty(&qbh); hpfs_brelse4(&qbh); + hpfs_claim_dirband_free(s, dno); } } @@ -366,7 +428,7 @@ struct dnode *hpfs_alloc_dnode(struct super_block *s, secno near, dnode_secno *dno, struct quad_buffer_head *qbh) { struct dnode *d; - if (hpfs_count_one_bitmap(s, hpfs_sb(s)->sb_dmap) > FREE_DNODES_ADD) { + if (hpfs_get_free_dnodes(s) > FREE_DNODES_ADD) { if (!(*dno = alloc_in_dirband(s, near))) if (!(*dno = hpfs_alloc_sector(s, near, 4, 0))) return NULL; } else { diff --git a/fs/hpfs/buffer.c b/fs/hpfs/buffer.c index 4d0a1afa058c..139ef1684d07 100644 --- a/fs/hpfs/buffer.c +++ b/fs/hpfs/buffer.c @@ -86,7 +86,6 @@ void *hpfs_get_sector(struct super_block *s, unsigned secno, struct buffer_head void *hpfs_map_4sectors(struct super_block *s, unsigned secno, struct quad_buffer_head *qbh, int ahead) { - struct buffer_head *bh; char *data; hpfs_lock_assert(s); @@ -100,34 +99,32 @@ void *hpfs_map_4sectors(struct super_block *s, unsigned secno, struct quad_buffe hpfs_prefetch_sectors(s, secno, 4 + ahead); + if (!(qbh->bh[0] = sb_bread(s, secno + 0))) goto bail0; + if (!(qbh->bh[1] = sb_bread(s, secno + 1))) goto bail1; + if (!(qbh->bh[2] = sb_bread(s, secno + 2))) goto bail2; + if (!(qbh->bh[3] = sb_bread(s, secno + 3))) goto bail3; + + if (likely(qbh->bh[1]->b_data == qbh->bh[0]->b_data + 1 * 512) && + likely(qbh->bh[2]->b_data == qbh->bh[0]->b_data + 2 * 512) && + likely(qbh->bh[3]->b_data == qbh->bh[0]->b_data + 3 * 512)) { + return qbh->data = qbh->bh[0]->b_data; + } + qbh->data = data = kmalloc(2048, GFP_NOFS); if (!data) { printk("HPFS: hpfs_map_4sectors: out of memory\n"); - goto bail; + goto bail4; } - qbh->bh[0] = bh = sb_bread(s, secno); - if (!bh) - goto bail0; - memcpy(data, bh->b_data, 512); - - qbh->bh[1] = bh = sb_bread(s, secno + 1); - if (!bh) - goto bail1; - memcpy(data + 512, bh->b_data, 512); - - qbh->bh[2] = bh = sb_bread(s, secno + 2); - if (!bh) - goto bail2; - memcpy(data + 2 * 512, bh->b_data, 512); - - qbh->bh[3] = bh = sb_bread(s, secno + 3); - if (!bh) - goto bail3; - memcpy(data + 3 * 512, bh->b_data, 512); + memcpy(data + 0 * 512, qbh->bh[0]->b_data, 512); + memcpy(data + 1 * 512, qbh->bh[1]->b_data, 512); + memcpy(data + 2 * 512, qbh->bh[2]->b_data, 512); + memcpy(data + 3 * 512, qbh->bh[3]->b_data, 512); return data; + bail4: + brelse(qbh->bh[3]); bail3: brelse(qbh->bh[2]); bail2: @@ -135,9 +132,6 @@ void *hpfs_map_4sectors(struct super_block *s, unsigned secno, struct quad_buffe bail1: brelse(qbh->bh[0]); bail0: - kfree(data); - printk("HPFS: hpfs_map_4sectors: read error\n"); - bail: return NULL; } @@ -155,44 +149,54 @@ void *hpfs_get_4sectors(struct super_block *s, unsigned secno, return NULL; } - /*return hpfs_map_4sectors(s, secno, qbh, 0);*/ + if (!hpfs_get_sector(s, secno + 0, &qbh->bh[0])) goto bail0; + if (!hpfs_get_sector(s, secno + 1, &qbh->bh[1])) goto bail1; + if (!hpfs_get_sector(s, secno + 2, &qbh->bh[2])) goto bail2; + if (!hpfs_get_sector(s, secno + 3, &qbh->bh[3])) goto bail3; + + if (likely(qbh->bh[1]->b_data == qbh->bh[0]->b_data + 1 * 512) && + likely(qbh->bh[2]->b_data == qbh->bh[0]->b_data + 2 * 512) && + likely(qbh->bh[3]->b_data == qbh->bh[0]->b_data + 3 * 512)) { + return qbh->data = qbh->bh[0]->b_data; + } + if (!(qbh->data = kmalloc(2048, GFP_NOFS))) { printk("HPFS: hpfs_get_4sectors: out of memory\n"); - return NULL; + goto bail4; } - if (!(hpfs_get_sector(s, secno, &qbh->bh[0]))) goto bail0; - if (!(hpfs_get_sector(s, secno + 1, &qbh->bh[1]))) goto bail1; - if (!(hpfs_get_sector(s, secno + 2, &qbh->bh[2]))) goto bail2; - if (!(hpfs_get_sector(s, secno + 3, &qbh->bh[3]))) goto bail3; - memcpy(qbh->data, qbh->bh[0]->b_data, 512); - memcpy(qbh->data + 512, qbh->bh[1]->b_data, 512); - memcpy(qbh->data + 2*512, qbh->bh[2]->b_data, 512); - memcpy(qbh->data + 3*512, qbh->bh[3]->b_data, 512); return qbh->data; - bail3: brelse(qbh->bh[2]); - bail2: brelse(qbh->bh[1]); - bail1: brelse(qbh->bh[0]); - bail0: +bail4: + brelse(qbh->bh[3]); +bail3: + brelse(qbh->bh[2]); +bail2: + brelse(qbh->bh[1]); +bail1: + brelse(qbh->bh[0]); +bail0: return NULL; } void hpfs_brelse4(struct quad_buffer_head *qbh) { - brelse(qbh->bh[3]); - brelse(qbh->bh[2]); - brelse(qbh->bh[1]); + if (unlikely(qbh->data != qbh->bh[0]->b_data)) + kfree(qbh->data); brelse(qbh->bh[0]); - kfree(qbh->data); + brelse(qbh->bh[1]); + brelse(qbh->bh[2]); + brelse(qbh->bh[3]); } void hpfs_mark_4buffers_dirty(struct quad_buffer_head *qbh) { - memcpy(qbh->bh[0]->b_data, qbh->data, 512); - memcpy(qbh->bh[1]->b_data, qbh->data + 512, 512); - memcpy(qbh->bh[2]->b_data, qbh->data + 2 * 512, 512); - memcpy(qbh->bh[3]->b_data, qbh->data + 3 * 512, 512); + if (unlikely(qbh->data != qbh->bh[0]->b_data)) { + memcpy(qbh->bh[0]->b_data, qbh->data + 0 * 512, 512); + memcpy(qbh->bh[1]->b_data, qbh->data + 1 * 512, 512); + memcpy(qbh->bh[2]->b_data, qbh->data + 2 * 512, 512); + memcpy(qbh->bh[3]->b_data, qbh->data + 3 * 512, 512); + } mark_buffer_dirty(qbh->bh[0]); mark_buffer_dirty(qbh->bh[1]); mark_buffer_dirty(qbh->bh[2]); diff --git a/fs/hpfs/hpfs_fn.h b/fs/hpfs/hpfs_fn.h index 6797bf80f6e2..3ba49c080e42 100644 --- a/fs/hpfs/hpfs_fn.h +++ b/fs/hpfs/hpfs_fn.h @@ -312,7 +312,7 @@ static inline struct hpfs_sb_info *hpfs_sb(struct super_block *sb) __printf(2, 3) void hpfs_error(struct super_block *, const char *, ...); int hpfs_stop_cycles(struct super_block *, int, int *, int *, char *); -unsigned hpfs_count_one_bitmap(struct super_block *, secno); +unsigned hpfs_get_free_dnodes(struct super_block *); /* * local time (HPFS) to GMT (Unix) diff --git a/fs/hpfs/inode.c b/fs/hpfs/inode.c index 9edeeb0ea97e..50a427313835 100644 --- a/fs/hpfs/inode.c +++ b/fs/hpfs/inode.c @@ -304,7 +304,7 @@ void hpfs_write_if_changed(struct inode *inode) void hpfs_evict_inode(struct inode *inode) { - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); if (!inode->i_nlink) { hpfs_lock(inode->i_sb); diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c index b8d01ef6f531..fe3463a43236 100644 --- a/fs/hpfs/super.c +++ b/fs/hpfs/super.c @@ -121,7 +121,7 @@ static void hpfs_put_super(struct super_block *s) call_rcu(&hpfs_sb(s)->rcu, lazy_free_sbi); } -unsigned hpfs_count_one_bitmap(struct super_block *s, secno secno) +static unsigned hpfs_count_one_bitmap(struct super_block *s, secno secno) { struct quad_buffer_head qbh; unsigned long *bits; @@ -129,7 +129,7 @@ unsigned hpfs_count_one_bitmap(struct super_block *s, secno secno) bits = hpfs_map_4sectors(s, secno, &qbh, 0); if (!bits) - return 0; + return (unsigned)-1; count = bitmap_weight(bits, 2048 * BITS_PER_BYTE); hpfs_brelse4(&qbh); return count; @@ -144,30 +144,45 @@ static unsigned count_bitmaps(struct super_block *s) hpfs_prefetch_bitmap(s, n); } for (n = 0; n < n_bands; n++) { + unsigned c; hpfs_prefetch_bitmap(s, n + COUNT_RD_AHEAD); - count += hpfs_count_one_bitmap(s, le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[n])); + c = hpfs_count_one_bitmap(s, le32_to_cpu(hpfs_sb(s)->sb_bmp_dir[n])); + if (c != (unsigned)-1) + count += c; } return count; } +unsigned hpfs_get_free_dnodes(struct super_block *s) +{ + struct hpfs_sb_info *sbi = hpfs_sb(s); + if (sbi->sb_n_free_dnodes == (unsigned)-1) { + unsigned c = hpfs_count_one_bitmap(s, sbi->sb_dmap); + if (c == (unsigned)-1) + return 0; + sbi->sb_n_free_dnodes = c; + } + return sbi->sb_n_free_dnodes; +} + static int hpfs_statfs(struct dentry *dentry, struct kstatfs *buf) { struct super_block *s = dentry->d_sb; struct hpfs_sb_info *sbi = hpfs_sb(s); u64 id = huge_encode_dev(s->s_bdev->bd_dev); + hpfs_lock(s); - /*if (sbi->sb_n_free == -1) {*/ + if (sbi->sb_n_free == (unsigned)-1) sbi->sb_n_free = count_bitmaps(s); - sbi->sb_n_free_dnodes = hpfs_count_one_bitmap(s, sbi->sb_dmap); - /*}*/ + buf->f_type = s->s_magic; buf->f_bsize = 512; buf->f_blocks = sbi->sb_fs_size; buf->f_bfree = sbi->sb_n_free; buf->f_bavail = sbi->sb_n_free; buf->f_files = sbi->sb_dirband_size / 4; - buf->f_ffree = sbi->sb_n_free_dnodes; + buf->f_ffree = hpfs_get_free_dnodes(s); buf->f_fsid.val[0] = (u32)id; buf->f_fsid.val[1] = (u32)(id >> 32); buf->f_namelen = 254; @@ -406,6 +421,8 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data) struct hpfs_sb_info *sbi = hpfs_sb(s); char *new_opts = kstrdup(data, GFP_KERNEL); + sync_filesystem(s); + *flags |= MS_NOATIME; hpfs_lock(s); diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index d19b30ababf1..204027520937 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -366,7 +366,13 @@ static void truncate_hugepages(struct inode *inode, loff_t lstart) static void hugetlbfs_evict_inode(struct inode *inode) { + struct resv_map *resv_map; + truncate_hugepages(inode, 0); + resv_map = (struct resv_map *)inode->i_mapping->private_data; + /* root inode doesn't have the resv_map, so we should check it */ + if (resv_map) + resv_map_release(&resv_map->refs); clear_inode(inode); } @@ -476,6 +482,11 @@ static struct inode *hugetlbfs_get_inode(struct super_block *sb, umode_t mode, dev_t dev) { struct inode *inode; + struct resv_map *resv_map; + + resv_map = resv_map_alloc(); + if (!resv_map) + return NULL; inode = new_inode(sb); if (inode) { @@ -487,7 +498,7 @@ static struct inode *hugetlbfs_get_inode(struct super_block *sb, inode->i_mapping->a_ops = &hugetlbfs_aops; inode->i_mapping->backing_dev_info =&hugetlbfs_backing_dev_info; inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; - INIT_LIST_HEAD(&inode->i_mapping->private_list); + inode->i_mapping->private_data = resv_map; info = HUGETLBFS_I(inode); /* * The policy is initialized here even if we are creating a @@ -517,7 +528,9 @@ static struct inode *hugetlbfs_get_inode(struct super_block *sb, break; } lockdep_annotate_inode_mutex_key(inode); - } + } else + kref_put(&resv_map->refs, resv_map_release); + return inode; } diff --git a/fs/inode.c b/fs/inode.c index 4bcdad3c9361..f96d2a6f88cc 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -503,6 +503,7 @@ void clear_inode(struct inode *inode) */ spin_lock_irq(&inode->i_data.tree_lock); BUG_ON(inode->i_data.nrpages); + BUG_ON(inode->i_data.nrshadows); spin_unlock_irq(&inode->i_data.tree_lock); BUG_ON(!list_empty(&inode->i_data.private_list)); BUG_ON(!(inode->i_state & I_FREEING)); @@ -548,8 +549,7 @@ static void evict(struct inode *inode) if (op->evict_inode) { op->evict_inode(inode); } else { - if (inode->i_data.nrpages) - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); } if (S_ISBLK(inode->i_mode) && inode->i_bdev) @@ -944,24 +944,22 @@ EXPORT_SYMBOL(unlock_new_inode); /** * lock_two_nondirectories - take two i_mutexes on non-directory objects + * + * Lock any non-NULL argument that is not a directory. + * Zero, one or two objects may be locked by this function. + * * @inode1: first inode to lock * @inode2: second inode to lock */ void lock_two_nondirectories(struct inode *inode1, struct inode *inode2) { - WARN_ON_ONCE(S_ISDIR(inode1->i_mode)); - if (inode1 == inode2 || !inode2) { - mutex_lock(&inode1->i_mutex); - return; - } - WARN_ON_ONCE(S_ISDIR(inode2->i_mode)); - if (inode1 < inode2) { + if (inode1 > inode2) + swap(inode1, inode2); + + if (inode1 && !S_ISDIR(inode1->i_mode)) mutex_lock(&inode1->i_mutex); + if (inode2 && !S_ISDIR(inode2->i_mode) && inode2 != inode1) mutex_lock_nested(&inode2->i_mutex, I_MUTEX_NONDIR2); - } else { - mutex_lock(&inode2->i_mutex); - mutex_lock_nested(&inode1->i_mutex, I_MUTEX_NONDIR2); - } } EXPORT_SYMBOL(lock_two_nondirectories); @@ -972,8 +970,9 @@ EXPORT_SYMBOL(lock_two_nondirectories); */ void unlock_two_nondirectories(struct inode *inode1, struct inode *inode2) { - mutex_unlock(&inode1->i_mutex); - if (inode2 && inode2 != inode1) + if (inode1 && !S_ISDIR(inode1->i_mode)) + mutex_unlock(&inode1->i_mutex); + if (inode2 && !S_ISDIR(inode2->i_mode) && inode2 != inode1) mutex_unlock(&inode2->i_mutex); } EXPORT_SYMBOL(unlock_two_nondirectories); @@ -1899,3 +1898,34 @@ void inode_dio_done(struct inode *inode) wake_up_bit(&inode->i_state, __I_DIO_WAKEUP); } EXPORT_SYMBOL(inode_dio_done); + +/* + * inode_set_flags - atomically set some inode flags + * + * Note: the caller should be holding i_mutex, or else be sure that + * they have exclusive access to the inode structure (i.e., while the + * inode is being instantiated). The reason for the cmpxchg() loop + * --- which wouldn't be necessary if all code paths which modify + * i_flags actually followed this rule, is that there is at least one + * code path which doesn't today --- for example, + * __generic_file_aio_write() calls file_remove_suid() without holding + * i_mutex --- so we use cmpxchg() out of an abundance of caution. + * + * In the long run, i_mutex is overkill, and we should probably look + * at using the i_lock spinlock to protect i_flags, and then make sure + * it is so documented in include/linux/fs.h and that all code follows + * the locking convention!! + */ +void inode_set_flags(struct inode *inode, unsigned int flags, + unsigned int mask) +{ + unsigned int old_flags, new_flags; + + WARN_ON_ONCE(flags & ~mask); + do { + old_flags = ACCESS_ONCE(inode->i_flags); + new_flags = (old_flags & ~mask) | flags; + } while (unlikely(cmpxchg(&inode->i_flags, old_flags, + new_flags) != old_flags)); +} +EXPORT_SYMBOL(inode_set_flags); diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c index 4a9e10ea13f2..4556ce1af5b0 100644 --- a/fs/isofs/inode.c +++ b/fs/isofs/inode.c @@ -93,7 +93,7 @@ static void init_once(void *foo) inode_init_once(&ei->vfs_inode); } -static int init_inodecache(void) +static int __init init_inodecache(void) { isofs_inode_cachep = kmem_cache_create("isofs_inode_cache", sizeof(struct iso_inode_info), @@ -117,6 +117,7 @@ static void destroy_inodecache(void) static int isofs_remount(struct super_block *sb, int *flags, char *data) { + sync_filesystem(sb); if (!(*flags & MS_RDONLY)) return -EROFS; return 0; diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c index 2d04f9afafd7..06fe11e0abfa 100644 --- a/fs/jbd/journal.c +++ b/fs/jbd/journal.c @@ -573,7 +573,7 @@ int log_wait_commit(journal_t *journal, tid_t tid) #ifdef CONFIG_JBD_DEBUG spin_lock(&journal->j_state_lock); if (!tid_geq(journal->j_commit_request, tid)) { - printk(KERN_EMERG + printk(KERN_ERR "%s: error: j_commit_request=%d, tid=%d\n", __func__, journal->j_commit_request, tid); } @@ -604,10 +604,8 @@ int log_wait_commit(journal_t *journal, tid_t tid) out_unlock: spin_unlock(&journal->j_state_lock); - if (unlikely(is_journal_aborted(journal))) { - printk(KERN_EMERG "journal commit I/O error\n"); + if (unlikely(is_journal_aborted(journal))) err = -EIO; - } return err; } @@ -2136,7 +2134,7 @@ static void __exit journal_exit(void) #ifdef CONFIG_JBD_DEBUG int n = atomic_read(&nr_journal_heads); if (n) - printk(KERN_EMERG "JBD: leaked %d journal_heads!\n", n); + printk(KERN_ERR "JBD: leaked %d journal_heads!\n", n); #endif jbd_remove_debugfs_entry(); journal_destroy_caches(); diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c index aa603e017d22..1695ba8334a2 100644 --- a/fs/jbd/transaction.c +++ b/fs/jbd/transaction.c @@ -675,7 +675,7 @@ repeat: jbd_alloc(jh2bh(jh)->b_size, GFP_NOFS); if (!frozen_buffer) { - printk(KERN_EMERG + printk(KERN_ERR "%s: OOM for frozen_buffer\n", __func__); JBUFFER_TRACE(jh, "oom!"); @@ -898,7 +898,7 @@ repeat: if (!jh->b_committed_data) { committed_data = jbd_alloc(jh2bh(jh)->b_size, GFP_NOFS); if (!committed_data) { - printk(KERN_EMERG "%s: No memory for committed data\n", + printk(KERN_ERR "%s: No memory for committed data\n", __func__); err = -ENOMEM; goto out; diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index cf2fc0594063..5f26139a165a 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -555,7 +555,6 @@ void jbd2_journal_commit_transaction(journal_t *journal) blk_start_plug(&plug); jbd2_journal_write_revoke_records(journal, commit_transaction, &log_bufs, WRITE_SYNC); - blk_finish_plug(&plug); jbd_debug(3, "JBD2: commit phase 2b\n"); @@ -582,7 +581,6 @@ void jbd2_journal_commit_transaction(journal_t *journal) err = 0; bufs = 0; descriptor = NULL; - blk_start_plug(&plug); while (commit_transaction->t_buffers) { /* Find the next buffer to be journaled... */ @@ -1067,6 +1065,25 @@ restart_loop: goto restart_loop; } + /* Add the transaction to the checkpoint list + * __journal_remove_checkpoint() can not destroy transaction + * under us because it is not marked as T_FINISHED yet */ + if (journal->j_checkpoint_transactions == NULL) { + journal->j_checkpoint_transactions = commit_transaction; + commit_transaction->t_cpnext = commit_transaction; + commit_transaction->t_cpprev = commit_transaction; + } else { + commit_transaction->t_cpnext = + journal->j_checkpoint_transactions; + commit_transaction->t_cpprev = + commit_transaction->t_cpnext->t_cpprev; + commit_transaction->t_cpnext->t_cpprev = + commit_transaction; + commit_transaction->t_cpprev->t_cpnext = + commit_transaction; + } + spin_unlock(&journal->j_list_lock); + /* Done with this transaction! */ jbd_debug(3, "JBD2: commit phase 7\n"); @@ -1085,24 +1102,7 @@ restart_loop: atomic_read(&commit_transaction->t_handle_count); trace_jbd2_run_stats(journal->j_fs_dev->bd_dev, commit_transaction->t_tid, &stats.run); - - /* - * Calculate overall stats - */ - spin_lock(&journal->j_history_lock); - journal->j_stats.ts_tid++; - if (commit_transaction->t_requested) - journal->j_stats.ts_requested++; - journal->j_stats.run.rs_wait += stats.run.rs_wait; - journal->j_stats.run.rs_request_delay += stats.run.rs_request_delay; - journal->j_stats.run.rs_running += stats.run.rs_running; - journal->j_stats.run.rs_locked += stats.run.rs_locked; - journal->j_stats.run.rs_flushing += stats.run.rs_flushing; - journal->j_stats.run.rs_logging += stats.run.rs_logging; - journal->j_stats.run.rs_handle_count += stats.run.rs_handle_count; - journal->j_stats.run.rs_blocks += stats.run.rs_blocks; - journal->j_stats.run.rs_blocks_logged += stats.run.rs_blocks_logged; - spin_unlock(&journal->j_history_lock); + stats.ts_requested = (commit_transaction->t_requested) ? 1 : 0; commit_transaction->t_state = T_COMMIT_CALLBACK; J_ASSERT(commit_transaction == journal->j_committing_transaction); @@ -1122,24 +1122,6 @@ restart_loop: write_unlock(&journal->j_state_lock); - if (journal->j_checkpoint_transactions == NULL) { - journal->j_checkpoint_transactions = commit_transaction; - commit_transaction->t_cpnext = commit_transaction; - commit_transaction->t_cpprev = commit_transaction; - } else { - commit_transaction->t_cpnext = - journal->j_checkpoint_transactions; - commit_transaction->t_cpprev = - commit_transaction->t_cpnext->t_cpprev; - commit_transaction->t_cpnext->t_cpprev = - commit_transaction; - commit_transaction->t_cpprev->t_cpnext = - commit_transaction; - } - spin_unlock(&journal->j_list_lock); - /* Drop all spin_locks because commit_callback may be block. - * __journal_remove_checkpoint() can not destroy transaction - * under us because it is not marked as T_FINISHED yet */ if (journal->j_commit_callback) journal->j_commit_callback(journal, commit_transaction); @@ -1150,7 +1132,7 @@ restart_loop: write_lock(&journal->j_state_lock); spin_lock(&journal->j_list_lock); commit_transaction->t_state = T_FINISHED; - /* Recheck checkpoint lists after j_list_lock was dropped */ + /* Check if the transaction can be dropped now that we are finished */ if (commit_transaction->t_checkpoint_list == NULL && commit_transaction->t_checkpoint_io_list == NULL) { __jbd2_journal_drop_transaction(journal, commit_transaction); @@ -1159,4 +1141,21 @@ restart_loop: spin_unlock(&journal->j_list_lock); write_unlock(&journal->j_state_lock); wake_up(&journal->j_wait_done_commit); + + /* + * Calculate overall stats + */ + spin_lock(&journal->j_history_lock); + journal->j_stats.ts_tid++; + journal->j_stats.ts_requested += stats.ts_requested; + journal->j_stats.run.rs_wait += stats.run.rs_wait; + journal->j_stats.run.rs_request_delay += stats.run.rs_request_delay; + journal->j_stats.run.rs_running += stats.run.rs_running; + journal->j_stats.run.rs_locked += stats.run.rs_locked; + journal->j_stats.run.rs_flushing += stats.run.rs_flushing; + journal->j_stats.run.rs_logging += stats.run.rs_logging; + journal->j_stats.run.rs_handle_count += stats.run.rs_handle_count; + journal->j_stats.run.rs_blocks += stats.run.rs_blocks; + journal->j_stats.run.rs_blocks_logged += stats.run.rs_blocks_logged; + spin_unlock(&journal->j_history_lock); } diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index 5fa344afb49a..67b8e303946c 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -122,7 +122,7 @@ EXPORT_SYMBOL(__jbd2_debug); #endif /* Checksumming functions */ -int jbd2_verify_csum_type(journal_t *j, journal_superblock_t *sb) +static int jbd2_verify_csum_type(journal_t *j, journal_superblock_t *sb) { if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) return 1; @@ -143,7 +143,7 @@ static __be32 jbd2_superblock_csum(journal_t *j, journal_superblock_t *sb) return cpu_to_be32(csum); } -int jbd2_superblock_csum_verify(journal_t *j, journal_superblock_t *sb) +static int jbd2_superblock_csum_verify(journal_t *j, journal_superblock_t *sb) { if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) return 1; @@ -151,7 +151,7 @@ int jbd2_superblock_csum_verify(journal_t *j, journal_superblock_t *sb) return sb->s_checksum == jbd2_superblock_csum(j, sb); } -void jbd2_superblock_csum_set(journal_t *j, journal_superblock_t *sb) +static void jbd2_superblock_csum_set(journal_t *j, journal_superblock_t *sb) { if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) return; @@ -302,8 +302,8 @@ static void journal_kill_thread(journal_t *journal) journal->j_flags |= JBD2_UNMOUNT; while (journal->j_task) { - wake_up(&journal->j_wait_commit); write_unlock(&journal->j_state_lock); + wake_up(&journal->j_wait_commit); wait_event(journal->j_wait_done_commit, journal->j_task == NULL); write_lock(&journal->j_state_lock); } @@ -710,8 +710,8 @@ int jbd2_log_wait_commit(journal_t *journal, tid_t tid) while (tid_gt(tid, journal->j_commit_sequence)) { jbd_debug(1, "JBD2: want %d, j_commit_sequence=%d\n", tid, journal->j_commit_sequence); - wake_up(&journal->j_wait_commit); read_unlock(&journal->j_state_lock); + wake_up(&journal->j_wait_commit); wait_event(journal->j_wait_done_commit, !tid_gt(tid, journal->j_commit_sequence)); read_lock(&journal->j_state_lock); diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c index 8360674c85bc..38cfcf5f6fce 100644 --- a/fs/jbd2/transaction.c +++ b/fs/jbd2/transaction.c @@ -514,11 +514,13 @@ int jbd2_journal_start_reserved(handle_t *handle, unsigned int type, * similarly constrained call sites */ ret = start_this_handle(journal, handle, GFP_NOFS); - if (ret < 0) + if (ret < 0) { jbd2_journal_free_reserved(handle); + return ret; + } handle->h_type = type; handle->h_line_no = line_no; - return ret; + return 0; } EXPORT_SYMBOL(jbd2_journal_start_reserved); @@ -1071,7 +1073,6 @@ int jbd2_journal_get_create_access(handle_t *handle, struct buffer_head *bh) * reused here. */ jbd_lock_bh_state(bh); - spin_lock(&journal->j_list_lock); J_ASSERT_JH(jh, (jh->b_transaction == transaction || jh->b_transaction == NULL || (jh->b_transaction == journal->j_committing_transaction && @@ -1094,12 +1095,14 @@ int jbd2_journal_get_create_access(handle_t *handle, struct buffer_head *bh) jh->b_modified = 0; JBUFFER_TRACE(jh, "file as BJ_Reserved"); + spin_lock(&journal->j_list_lock); __jbd2_journal_file_buffer(jh, transaction, BJ_Reserved); } else if (jh->b_transaction == journal->j_committing_transaction) { /* first access by this transaction */ jh->b_modified = 0; JBUFFER_TRACE(jh, "set next transaction"); + spin_lock(&journal->j_list_lock); jh->b_next_transaction = transaction; } spin_unlock(&journal->j_list_lock); @@ -1310,7 +1313,7 @@ int jbd2_journal_dirty_metadata(handle_t *handle, struct buffer_head *bh) journal->j_running_transaction)) { printk(KERN_ERR "JBD2: %s: " "jh->b_transaction (%llu, %p, %u) != " - "journal->j_running_transaction (%p, %u)", + "journal->j_running_transaction (%p, %u)\n", journal->j_devname, (unsigned long long) bh->b_blocknr, jh->b_transaction, @@ -1333,30 +1336,25 @@ int jbd2_journal_dirty_metadata(handle_t *handle, struct buffer_head *bh) */ if (jh->b_transaction != transaction) { JBUFFER_TRACE(jh, "already on other transaction"); - if (unlikely(jh->b_transaction != - journal->j_committing_transaction)) { - printk(KERN_ERR "JBD2: %s: " - "jh->b_transaction (%llu, %p, %u) != " - "journal->j_committing_transaction (%p, %u)", + if (unlikely(((jh->b_transaction != + journal->j_committing_transaction)) || + (jh->b_next_transaction != transaction))) { + printk(KERN_ERR "jbd2_journal_dirty_metadata: %s: " + "bad jh for block %llu: " + "transaction (%p, %u), " + "jh->b_transaction (%p, %u), " + "jh->b_next_transaction (%p, %u), jlist %u\n", journal->j_devname, (unsigned long long) bh->b_blocknr, + transaction, transaction->t_tid, jh->b_transaction, - jh->b_transaction ? jh->b_transaction->t_tid : 0, - journal->j_committing_transaction, - journal->j_committing_transaction ? - journal->j_committing_transaction->t_tid : 0); - ret = -EINVAL; - } - if (unlikely(jh->b_next_transaction != transaction)) { - printk(KERN_ERR "JBD2: %s: " - "jh->b_next_transaction (%llu, %p, %u) != " - "transaction (%p, %u)", - journal->j_devname, - (unsigned long long) bh->b_blocknr, + jh->b_transaction ? + jh->b_transaction->t_tid : 0, jh->b_next_transaction, jh->b_next_transaction ? jh->b_next_transaction->t_tid : 0, - transaction, transaction->t_tid); + jh->b_jlist); + WARN_ON(1); ret = -EINVAL; } /* And this case is illegal: we can't reuse another @@ -1413,7 +1411,6 @@ int jbd2_journal_forget (handle_t *handle, struct buffer_head *bh) BUFFER_TRACE(bh, "entry"); jbd_lock_bh_state(bh); - spin_lock(&journal->j_list_lock); if (!buffer_jbd(bh)) goto not_jbd; @@ -1466,6 +1463,7 @@ int jbd2_journal_forget (handle_t *handle, struct buffer_head *bh) * we know to remove the checkpoint after we commit. */ + spin_lock(&journal->j_list_lock); if (jh->b_cp_transaction) { __jbd2_journal_temp_unlink_buffer(jh); __jbd2_journal_file_buffer(jh, transaction, BJ_Forget); @@ -1478,6 +1476,7 @@ int jbd2_journal_forget (handle_t *handle, struct buffer_head *bh) goto drop; } } + spin_unlock(&journal->j_list_lock); } else if (jh->b_transaction) { J_ASSERT_JH(jh, (jh->b_transaction == journal->j_committing_transaction)); @@ -1489,7 +1488,9 @@ int jbd2_journal_forget (handle_t *handle, struct buffer_head *bh) if (jh->b_next_transaction) { J_ASSERT(jh->b_next_transaction == transaction); + spin_lock(&journal->j_list_lock); jh->b_next_transaction = NULL; + spin_unlock(&journal->j_list_lock); /* * only drop a reference if this transaction modified @@ -1501,7 +1502,6 @@ int jbd2_journal_forget (handle_t *handle, struct buffer_head *bh) } not_jbd: - spin_unlock(&journal->j_list_lock); jbd_unlock_bh_state(bh); __brelse(bh); drop: @@ -1819,11 +1819,11 @@ __journal_try_to_free_buffer(journal_t *journal, struct buffer_head *bh) if (buffer_locked(bh) || buffer_dirty(bh)) goto out; - if (jh->b_next_transaction != NULL) + if (jh->b_next_transaction != NULL || jh->b_transaction != NULL) goto out; spin_lock(&journal->j_list_lock); - if (jh->b_cp_transaction != NULL && jh->b_transaction == NULL) { + if (jh->b_cp_transaction != NULL) { /* written-back checkpointed metadata buffer */ JBUFFER_TRACE(jh, "remove from checkpoint list"); __jbd2_journal_remove_checkpoint(jh); diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c index 223283c30111..009ec0b5993d 100644 --- a/fs/jffs2/acl.c +++ b/fs/jffs2/acl.c @@ -178,10 +178,6 @@ struct posix_acl *jffs2_get_acl(struct inode *inode, int type) char *value = NULL; int rc, xprefix; - acl = get_cached_acl(inode, type); - if (acl != ACL_NOT_CACHED) - return acl; - switch (type) { case ACL_TYPE_ACCESS: xprefix = JFFS2_XPREFIX_ACL_ACCESS; @@ -232,13 +228,10 @@ static int __jffs2_set_acl(struct inode *inode, int xprefix, struct posix_acl *a return rc; } -static int jffs2_set_acl(struct inode *inode, int type, struct posix_acl *acl) +int jffs2_set_acl(struct inode *inode, struct posix_acl *acl, int type) { int rc, xprefix; - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - switch (type) { case ACL_TYPE_ACCESS: xprefix = JFFS2_XPREFIX_ACL_ACCESS; @@ -277,30 +270,21 @@ static int jffs2_set_acl(struct inode *inode, int type, struct posix_acl *acl) int jffs2_init_acl_pre(struct inode *dir_i, struct inode *inode, umode_t *i_mode) { - struct posix_acl *acl; + struct posix_acl *default_acl, *acl; int rc; cache_no_acl(inode); - if (S_ISLNK(*i_mode)) - return 0; /* Symlink always has no-ACL */ - - acl = jffs2_get_acl(dir_i, ACL_TYPE_DEFAULT); - if (IS_ERR(acl)) - return PTR_ERR(acl); - - if (!acl) { - *i_mode &= ~current_umask(); - } else { - if (S_ISDIR(*i_mode)) - set_cached_acl(inode, ACL_TYPE_DEFAULT, acl); - - rc = posix_acl_create(&acl, GFP_KERNEL, i_mode); - if (rc < 0) - return rc; - if (rc > 0) - set_cached_acl(inode, ACL_TYPE_ACCESS, acl); + rc = posix_acl_create(dir_i, i_mode, &default_acl, &acl); + if (rc) + return rc; + if (default_acl) { + set_cached_acl(inode, ACL_TYPE_DEFAULT, default_acl); + posix_acl_release(default_acl); + } + if (acl) { + set_cached_acl(inode, ACL_TYPE_ACCESS, acl); posix_acl_release(acl); } return 0; @@ -324,106 +308,3 @@ int jffs2_init_acl_post(struct inode *inode) return 0; } - -int jffs2_acl_chmod(struct inode *inode) -{ - struct posix_acl *acl; - int rc; - - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - acl = jffs2_get_acl(inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl) || !acl) - return PTR_ERR(acl); - rc = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); - if (rc) - return rc; - rc = jffs2_set_acl(inode, ACL_TYPE_ACCESS, acl); - posix_acl_release(acl); - return rc; -} - -static size_t jffs2_acl_access_listxattr(struct dentry *dentry, char *list, - size_t list_size, const char *name, size_t name_len, int type) -{ - const int retlen = sizeof(POSIX_ACL_XATTR_ACCESS); - - if (list && retlen <= list_size) - strcpy(list, POSIX_ACL_XATTR_ACCESS); - return retlen; -} - -static size_t jffs2_acl_default_listxattr(struct dentry *dentry, char *list, - size_t list_size, const char *name, size_t name_len, int type) -{ - const int retlen = sizeof(POSIX_ACL_XATTR_DEFAULT); - - if (list && retlen <= list_size) - strcpy(list, POSIX_ACL_XATTR_DEFAULT); - return retlen; -} - -static int jffs2_acl_getxattr(struct dentry *dentry, const char *name, - void *buffer, size_t size, int type) -{ - struct posix_acl *acl; - int rc; - - if (name[0] != '\0') - return -EINVAL; - - acl = jffs2_get_acl(dentry->d_inode, type); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (!acl) - return -ENODATA; - rc = posix_acl_to_xattr(&init_user_ns, acl, buffer, size); - posix_acl_release(acl); - - return rc; -} - -static int jffs2_acl_setxattr(struct dentry *dentry, const char *name, - const void *value, size_t size, int flags, int type) -{ - struct posix_acl *acl; - int rc; - - if (name[0] != '\0') - return -EINVAL; - if (!inode_owner_or_capable(dentry->d_inode)) - return -EPERM; - - if (value) { - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl) { - rc = posix_acl_valid(acl); - if (rc) - goto out; - } - } else { - acl = NULL; - } - rc = jffs2_set_acl(dentry->d_inode, type, acl); - out: - posix_acl_release(acl); - return rc; -} - -const struct xattr_handler jffs2_acl_access_xattr_handler = { - .prefix = POSIX_ACL_XATTR_ACCESS, - .flags = ACL_TYPE_DEFAULT, - .list = jffs2_acl_access_listxattr, - .get = jffs2_acl_getxattr, - .set = jffs2_acl_setxattr, -}; - -const struct xattr_handler jffs2_acl_default_xattr_handler = { - .prefix = POSIX_ACL_XATTR_DEFAULT, - .flags = ACL_TYPE_DEFAULT, - .list = jffs2_acl_default_listxattr, - .get = jffs2_acl_getxattr, - .set = jffs2_acl_setxattr, -}; diff --git a/fs/jffs2/acl.h b/fs/jffs2/acl.h index 9b477246f2a6..2e2b5745c3b7 100644 --- a/fs/jffs2/acl.h +++ b/fs/jffs2/acl.h @@ -27,17 +27,14 @@ struct jffs2_acl_header { #ifdef CONFIG_JFFS2_FS_POSIX_ACL struct posix_acl *jffs2_get_acl(struct inode *inode, int type); -extern int jffs2_acl_chmod(struct inode *); +int jffs2_set_acl(struct inode *inode, struct posix_acl *acl, int type); extern int jffs2_init_acl_pre(struct inode *, struct inode *, umode_t *); extern int jffs2_init_acl_post(struct inode *); -extern const struct xattr_handler jffs2_acl_access_xattr_handler; -extern const struct xattr_handler jffs2_acl_default_xattr_handler; - #else #define jffs2_get_acl (NULL) -#define jffs2_acl_chmod(inode) (0) +#define jffs2_set_acl (NULL) #define jffs2_init_acl_pre(dir_i,inode,mode) (0) #define jffs2_init_acl_post(inode) (0) diff --git a/fs/jffs2/compr_rtime.c b/fs/jffs2/compr_rtime.c index 16a5047903a6..406d9cc84ba8 100644 --- a/fs/jffs2/compr_rtime.c +++ b/fs/jffs2/compr_rtime.c @@ -33,7 +33,7 @@ static int jffs2_rtime_compress(unsigned char *data_in, unsigned char *cpage_out, uint32_t *sourcelen, uint32_t *dstlen) { - short positions[256]; + unsigned short positions[256]; int outpos = 0; int pos=0; @@ -74,7 +74,7 @@ static int jffs2_rtime_decompress(unsigned char *data_in, unsigned char *cpage_out, uint32_t srclen, uint32_t destlen) { - short positions[256]; + unsigned short positions[256]; int outpos = 0; int pos=0; diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c index e3aac222472e..938556025d64 100644 --- a/fs/jffs2/dir.c +++ b/fs/jffs2/dir.c @@ -59,6 +59,7 @@ const struct inode_operations jffs2_dir_inode_operations = .mknod = jffs2_mknod, .rename = jffs2_rename, .get_acl = jffs2_get_acl, + .set_acl = jffs2_set_acl, .setattr = jffs2_setattr, .setxattr = jffs2_setxattr, .getxattr = jffs2_getxattr, diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c index 1506673c087e..256cd19a3b78 100644 --- a/fs/jffs2/file.c +++ b/fs/jffs2/file.c @@ -66,6 +66,7 @@ const struct file_operations jffs2_file_operations = const struct inode_operations jffs2_file_inode_operations = { .get_acl = jffs2_get_acl, + .set_acl = jffs2_set_acl, .setattr = jffs2_setattr, .setxattr = jffs2_setxattr, .getxattr = jffs2_getxattr, diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index 09b3ed455724..601afd1afddf 100644 --- a/fs/jffs2/fs.c +++ b/fs/jffs2/fs.c @@ -190,15 +190,16 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr) int jffs2_setattr(struct dentry *dentry, struct iattr *iattr) { + struct inode *inode = dentry->d_inode; int rc; - rc = inode_change_ok(dentry->d_inode, iattr); + rc = inode_change_ok(inode, iattr); if (rc) return rc; - rc = jffs2_do_setattr(dentry->d_inode, iattr); + rc = jffs2_do_setattr(inode, iattr); if (!rc && (iattr->ia_valid & ATTR_MODE)) - rc = jffs2_acl_chmod(dentry->d_inode); + rc = posix_acl_chmod(inode, inode->i_mode); return rc; } @@ -241,7 +242,7 @@ void jffs2_evict_inode (struct inode *inode) jffs2_dbg(1, "%s(): ino #%lu mode %o\n", __func__, inode->i_ino, inode->i_mode); - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); jffs2_do_clear_inode(c, f); } @@ -456,12 +457,14 @@ struct inode *jffs2_new_inode (struct inode *dir_i, umode_t mode, struct jffs2_r The umask is only applied if there's no default ACL */ ret = jffs2_init_acl_pre(dir_i, inode, &mode); if (ret) { - make_bad_inode(inode); - iput(inode); - return ERR_PTR(ret); + mutex_unlock(&f->sem); + make_bad_inode(inode); + iput(inode); + return ERR_PTR(ret); } ret = jffs2_do_new_inode (c, f, mode, ri); if (ret) { + mutex_unlock(&f->sem); make_bad_inode(inode); iput(inode); return ERR_PTR(ret); @@ -478,6 +481,7 @@ struct inode *jffs2_new_inode (struct inode *dir_i, umode_t mode, struct jffs2_r inode->i_size = 0; if (insert_inode_locked(inode) < 0) { + mutex_unlock(&f->sem); make_bad_inode(inode); iput(inode); return ERR_PTR(-EINVAL); @@ -686,7 +690,7 @@ unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c, struct inode *inode = OFNI_EDONI_2SFFJ(f); struct page *pg; - pg = read_cache_page_async(inode->i_mapping, offset >> PAGE_CACHE_SHIFT, + pg = read_cache_page(inode->i_mapping, offset >> PAGE_CACHE_SHIFT, (void *)jffs2_do_readpage_unlock, inode); if (IS_ERR(pg)) return (void *)pg; diff --git a/fs/jffs2/malloc.c b/fs/jffs2/malloc.c index 4f47aa24b556..b8fd651307a4 100644 --- a/fs/jffs2/malloc.c +++ b/fs/jffs2/malloc.c @@ -288,6 +288,8 @@ struct jffs2_xattr_datum *jffs2_alloc_xattr_datum(void) struct jffs2_xattr_datum *xd; xd = kmem_cache_zalloc(xattr_datum_cache, GFP_KERNEL); dbg_memalloc("%p\n", xd); + if (!xd) + return NULL; xd->class = RAWNODE_CLASS_XATTR_DATUM; xd->node = (void *)xd; @@ -306,6 +308,8 @@ struct jffs2_xattr_ref *jffs2_alloc_xattr_ref(void) struct jffs2_xattr_ref *ref; ref = kmem_cache_zalloc(xattr_ref_cache, GFP_KERNEL); dbg_memalloc("%p\n", ref); + if (!ref) + return NULL; ref->class = RAWNODE_CLASS_XATTR_REF; ref->node = (void *)ref; diff --git a/fs/jffs2/nodelist.c b/fs/jffs2/nodelist.c index 975a1f562c10..9a5449bc3afb 100644 --- a/fs/jffs2/nodelist.c +++ b/fs/jffs2/nodelist.c @@ -564,25 +564,10 @@ struct jffs2_node_frag *jffs2_lookup_node_frag(struct rb_root *fragtree, uint32_ they're killed. */ void jffs2_kill_fragtree(struct rb_root *root, struct jffs2_sb_info *c) { - struct jffs2_node_frag *frag; - struct jffs2_node_frag *parent; - - if (!root->rb_node) - return; + struct jffs2_node_frag *frag, *next; dbg_fragtree("killing\n"); - - frag = (rb_entry(root->rb_node, struct jffs2_node_frag, rb)); - while(frag) { - if (frag->rb.rb_left) { - frag = frag_left(frag); - continue; - } - if (frag->rb.rb_right) { - frag = frag_right(frag); - continue; - } - + rbtree_postorder_for_each_entry_safe(frag, next, root, rb) { if (frag->node && !(--frag->node->frags)) { /* Not a hole, and it's the final remaining frag of this node. Free the node */ @@ -591,17 +576,8 @@ void jffs2_kill_fragtree(struct rb_root *root, struct jffs2_sb_info *c) jffs2_free_full_dnode(frag->node); } - parent = frag_parent(frag); - if (parent) { - if (frag_left(parent) == frag) - parent->rb.rb_left = NULL; - else - parent->rb.rb_right = NULL; - } jffs2_free_node_frag(frag); - frag = parent; - cond_resched(); } } diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h index e4619b00f7c5..fa35ff79ab35 100644 --- a/fs/jffs2/nodelist.h +++ b/fs/jffs2/nodelist.h @@ -231,7 +231,7 @@ struct jffs2_tmp_dnode_info uint32_t version; uint32_t data_crc; uint32_t partial_crc; - uint16_t csize; + uint32_t csize; uint16_t overlapped; }; diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c index 03310721712f..b6bd4affd9ad 100644 --- a/fs/jffs2/nodemgmt.c +++ b/fs/jffs2/nodemgmt.c @@ -179,6 +179,7 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, spin_unlock(&c->erase_completion_lock); schedule(); + remove_wait_queue(&c->erase_wait, &wait); } else spin_unlock(&c->erase_completion_lock); } else if (ret) @@ -211,20 +212,25 @@ out: int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *len, uint32_t sumsize) { - int ret = -EAGAIN; + int ret; minsize = PAD(minsize); jffs2_dbg(1, "%s(): Requested 0x%x bytes\n", __func__, minsize); - spin_lock(&c->erase_completion_lock); - while(ret == -EAGAIN) { + while (true) { + spin_lock(&c->erase_completion_lock); ret = jffs2_do_reserve_space(c, minsize, len, sumsize); if (ret) { jffs2_dbg(1, "%s(): looping, ret is %d\n", __func__, ret); } + spin_unlock(&c->erase_completion_lock); + + if (ret == -EAGAIN) + cond_resched(); + else + break; } - spin_unlock(&c->erase_completion_lock); if (!ret) ret = jffs2_prealloc_raw_node_refs(c, c->nextblock, 1); diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c index ae81b01e6fd7..386303dca382 100644 --- a/fs/jffs2/readinode.c +++ b/fs/jffs2/readinode.c @@ -543,33 +543,13 @@ static int jffs2_build_inode_fragtree(struct jffs2_sb_info *c, static void jffs2_free_tmp_dnode_info_list(struct rb_root *list) { - struct rb_node *this; - struct jffs2_tmp_dnode_info *tn; - - this = list->rb_node; + struct jffs2_tmp_dnode_info *tn, *next; - /* Now at bottom of tree */ - while (this) { - if (this->rb_left) - this = this->rb_left; - else if (this->rb_right) - this = this->rb_right; - else { - tn = rb_entry(this, struct jffs2_tmp_dnode_info, rb); + rbtree_postorder_for_each_entry_safe(tn, next, list, rb) { jffs2_free_full_dnode(tn->fn); jffs2_free_tmp_dnode_info(tn); - - this = rb_parent(this); - if (!this) - break; - - if (this->rb_left == &tn->rb) - this->rb_left = NULL; - else if (this->rb_right == &tn->rb) - this->rb_right = NULL; - else BUG(); - } } + *list = RB_ROOT; } diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c index 0defb1cc2a35..0918f0e2e266 100644 --- a/fs/jffs2/super.c +++ b/fs/jffs2/super.c @@ -243,6 +243,7 @@ static int jffs2_remount_fs(struct super_block *sb, int *flags, char *data) struct jffs2_sb_info *c = JFFS2_SB_INFO(sb); int err; + sync_filesystem(sb); err = jffs2_parse_options(c, data); if (err) return -EINVAL; diff --git a/fs/jffs2/symlink.c b/fs/jffs2/symlink.c index 6e563332bb24..c7c77b0dfccd 100644 --- a/fs/jffs2/symlink.c +++ b/fs/jffs2/symlink.c @@ -22,7 +22,6 @@ const struct inode_operations jffs2_symlink_inode_operations = { .readlink = generic_readlink, .follow_link = jffs2_follow_link, - .get_acl = jffs2_get_acl, .setattr = jffs2_setattr, .setxattr = jffs2_setxattr, .getxattr = jffs2_getxattr, diff --git a/fs/jffs2/xattr.c b/fs/jffs2/xattr.c index 3034e970eb9a..ad0f2e2a1700 100644 --- a/fs/jffs2/xattr.c +++ b/fs/jffs2/xattr.c @@ -22,6 +22,7 @@ #include <linux/crc32.h> #include <linux/jffs2.h> #include <linux/xattr.h> +#include <linux/posix_acl_xattr.h> #include <linux/mtd/mtd.h> #include "nodelist.h" /* -------- xdatum related functions ---------------- @@ -921,8 +922,8 @@ const struct xattr_handler *jffs2_xattr_handlers[] = { &jffs2_security_xattr_handler, #endif #ifdef CONFIG_JFFS2_FS_POSIX_ACL - &jffs2_acl_access_xattr_handler, - &jffs2_acl_default_xattr_handler, + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, #endif &jffs2_trusted_xattr_handler, NULL @@ -942,10 +943,10 @@ static const struct xattr_handler *xprefix_to_handler(int xprefix) { #endif #ifdef CONFIG_JFFS2_FS_POSIX_ACL case JFFS2_XPREFIX_ACL_ACCESS: - ret = &jffs2_acl_access_xattr_handler; + ret = &posix_acl_access_xattr_handler; break; case JFFS2_XPREFIX_ACL_DEFAULT: - ret = &jffs2_acl_default_xattr_handler; + ret = &posix_acl_default_xattr_handler; break; #endif case JFFS2_XPREFIX_TRUSTED: diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c index d254d6d35995..5a8ea16eedbc 100644 --- a/fs/jfs/acl.c +++ b/fs/jfs/acl.c @@ -72,7 +72,7 @@ struct posix_acl *jfs_get_acl(struct inode *inode, int type) return acl; } -static int jfs_set_acl(tid_t tid, struct inode *inode, int type, +static int __jfs_set_acl(tid_t tid, struct inode *inode, int type, struct posix_acl *acl) { char *ea_name; @@ -80,21 +80,24 @@ static int jfs_set_acl(tid_t tid, struct inode *inode, int type, int size = 0; char *value = NULL; - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - - switch(type) { - case ACL_TYPE_ACCESS: - ea_name = POSIX_ACL_XATTR_ACCESS; - break; - case ACL_TYPE_DEFAULT: - ea_name = POSIX_ACL_XATTR_DEFAULT; - if (!S_ISDIR(inode->i_mode)) - return acl ? -EACCES : 0; - break; - default: - return -EINVAL; + switch (type) { + case ACL_TYPE_ACCESS: + ea_name = POSIX_ACL_XATTR_ACCESS; + rc = posix_acl_equiv_mode(acl, &inode->i_mode); + if (rc < 0) + return rc; + inode->i_ctime = CURRENT_TIME; + mark_inode_dirty(inode); + if (rc == 0) + acl = NULL; + break; + case ACL_TYPE_DEFAULT: + ea_name = POSIX_ACL_XATTR_DEFAULT; + break; + default: + return -EINVAL; } + if (acl) { size = posix_acl_xattr_size(acl->a_count); value = kmalloc(size, GFP_KERNEL); @@ -114,65 +117,43 @@ out: return rc; } +int jfs_set_acl(struct inode *inode, struct posix_acl *acl, int type) +{ + int rc; + tid_t tid; + + tid = txBegin(inode->i_sb, 0); + mutex_lock(&JFS_IP(inode)->commit_mutex); + rc = __jfs_set_acl(tid, inode, type, acl); + if (!rc) + rc = txCommit(tid, 1, &inode, 0); + txEnd(tid); + mutex_unlock(&JFS_IP(inode)->commit_mutex); + return rc; +} + int jfs_init_acl(tid_t tid, struct inode *inode, struct inode *dir) { - struct posix_acl *acl = NULL; + struct posix_acl *default_acl, *acl; int rc = 0; - if (S_ISLNK(inode->i_mode)) - return 0; + rc = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl); + if (rc) + return rc; - acl = jfs_get_acl(dir, ACL_TYPE_DEFAULT); - if (IS_ERR(acl)) - return PTR_ERR(acl); + if (default_acl) { + rc = __jfs_set_acl(tid, inode, ACL_TYPE_DEFAULT, default_acl); + posix_acl_release(default_acl); + } if (acl) { - if (S_ISDIR(inode->i_mode)) { - rc = jfs_set_acl(tid, inode, ACL_TYPE_DEFAULT, acl); - if (rc) - goto cleanup; - } - rc = posix_acl_create(&acl, GFP_KERNEL, &inode->i_mode); - if (rc < 0) - goto cleanup; /* posix_acl_release(NULL) is no-op */ - if (rc > 0) - rc = jfs_set_acl(tid, inode, ACL_TYPE_ACCESS, acl); -cleanup: + if (!rc) + rc = __jfs_set_acl(tid, inode, ACL_TYPE_ACCESS, acl); posix_acl_release(acl); - } else - inode->i_mode &= ~current_umask(); + } JFS_IP(inode)->mode2 = (JFS_IP(inode)->mode2 & 0xffff0000) | inode->i_mode; return rc; } - -int jfs_acl_chmod(struct inode *inode) -{ - struct posix_acl *acl; - int rc; - tid_t tid; - - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - - acl = jfs_get_acl(inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl) || !acl) - return PTR_ERR(acl); - - rc = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); - if (rc) - return rc; - - tid = txBegin(inode->i_sb, 0); - mutex_lock(&JFS_IP(inode)->commit_mutex); - rc = jfs_set_acl(tid, inode, ACL_TYPE_ACCESS, acl); - if (!rc) - rc = txCommit(tid, 1, &inode, 0); - txEnd(tid); - mutex_unlock(&JFS_IP(inode)->commit_mutex); - - posix_acl_release(acl); - return rc; -} diff --git a/fs/jfs/file.c b/fs/jfs/file.c index dd7442c58358..794da944d5cd 100644 --- a/fs/jfs/file.c +++ b/fs/jfs/file.c @@ -19,6 +19,7 @@ #include <linux/mm.h> #include <linux/fs.h> +#include <linux/posix_acl.h> #include <linux/quotaops.h> #include "jfs_incore.h" #include "jfs_inode.h" @@ -131,7 +132,7 @@ int jfs_setattr(struct dentry *dentry, struct iattr *iattr) mark_inode_dirty(inode); if (iattr->ia_valid & ATTR_MODE) - rc = jfs_acl_chmod(inode); + rc = posix_acl_chmod(inode, inode->i_mode); return rc; } @@ -143,6 +144,7 @@ const struct inode_operations jfs_file_inode_operations = { .setattr = jfs_setattr, #ifdef CONFIG_JFS_POSIX_ACL .get_acl = jfs_get_acl, + .set_acl = jfs_set_acl, #endif }; diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c index f4aab719add5..6f8fe72c2a7a 100644 --- a/fs/jfs/inode.c +++ b/fs/jfs/inode.c @@ -154,7 +154,7 @@ void jfs_evict_inode(struct inode *inode) dquot_initialize(inode); if (JFS_IP(inode)->fileset == FILESYSTEM_I) { - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); if (test_cflag(COMMIT_Freewmap, inode)) jfs_free_zero_link(inode); @@ -168,7 +168,7 @@ void jfs_evict_inode(struct inode *inode) dquot_free_inode(inode); } } else { - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); } clear_inode(inode); dquot_drop(inode); diff --git a/fs/jfs/jfs_acl.h b/fs/jfs/jfs_acl.h index ad84fe50ca9e..489f993b7b13 100644 --- a/fs/jfs/jfs_acl.h +++ b/fs/jfs/jfs_acl.h @@ -21,8 +21,8 @@ #ifdef CONFIG_JFS_POSIX_ACL struct posix_acl *jfs_get_acl(struct inode *inode, int type); +int jfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); int jfs_init_acl(tid_t, struct inode *, struct inode *); -int jfs_acl_chmod(struct inode *inode); #else @@ -32,10 +32,5 @@ static inline int jfs_init_acl(tid_t tid, struct inode *inode, return 0; } -static inline int jfs_acl_chmod(struct inode *inode) -{ - return 0; -} - #endif #endif /* _H_JFS_ACL */ diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c index 360d27c48887..8d811e02b4b9 100644 --- a/fs/jfs/jfs_logmgr.c +++ b/fs/jfs/jfs_logmgr.c @@ -1998,20 +1998,20 @@ static int lbmRead(struct jfs_log * log, int pn, struct lbuf ** bpp) bio = bio_alloc(GFP_NOFS, 1); - bio->bi_sector = bp->l_blkno << (log->l2bsize - 9); + bio->bi_iter.bi_sector = bp->l_blkno << (log->l2bsize - 9); bio->bi_bdev = log->bdev; bio->bi_io_vec[0].bv_page = bp->l_page; bio->bi_io_vec[0].bv_len = LOGPSIZE; bio->bi_io_vec[0].bv_offset = bp->l_offset; bio->bi_vcnt = 1; - bio->bi_size = LOGPSIZE; + bio->bi_iter.bi_size = LOGPSIZE; bio->bi_end_io = lbmIODone; bio->bi_private = bp; /*check if journaling to disk has been disabled*/ if (log->no_integrity) { - bio->bi_size = 0; + bio->bi_iter.bi_size = 0; lbmIODone(bio, 0); } else { submit_bio(READ_SYNC, bio); @@ -2144,21 +2144,21 @@ static void lbmStartIO(struct lbuf * bp) jfs_info("lbmStartIO\n"); bio = bio_alloc(GFP_NOFS, 1); - bio->bi_sector = bp->l_blkno << (log->l2bsize - 9); + bio->bi_iter.bi_sector = bp->l_blkno << (log->l2bsize - 9); bio->bi_bdev = log->bdev; bio->bi_io_vec[0].bv_page = bp->l_page; bio->bi_io_vec[0].bv_len = LOGPSIZE; bio->bi_io_vec[0].bv_offset = bp->l_offset; bio->bi_vcnt = 1; - bio->bi_size = LOGPSIZE; + bio->bi_iter.bi_size = LOGPSIZE; bio->bi_end_io = lbmIODone; bio->bi_private = bp; /* check if journaling to disk has been disabled */ if (log->no_integrity) { - bio->bi_size = 0; + bio->bi_iter.bi_size = 0; lbmIODone(bio, 0); } else { submit_bio(WRITE_SYNC, bio); diff --git a/fs/jfs/jfs_metapage.c b/fs/jfs/jfs_metapage.c index d165cde0c68d..49ba7ff1bbb9 100644 --- a/fs/jfs/jfs_metapage.c +++ b/fs/jfs/jfs_metapage.c @@ -416,7 +416,7 @@ static int metapage_writepage(struct page *page, struct writeback_control *wbc) * count from hitting zero before we're through */ inc_io(page); - if (!bio->bi_size) + if (!bio->bi_iter.bi_size) goto dump_bio; submit_bio(WRITE, bio); nr_underway++; @@ -438,7 +438,7 @@ static int metapage_writepage(struct page *page, struct writeback_control *wbc) bio = bio_alloc(GFP_NOFS, 1); bio->bi_bdev = inode->i_sb->s_bdev; - bio->bi_sector = pblock << (inode->i_blkbits - 9); + bio->bi_iter.bi_sector = pblock << (inode->i_blkbits - 9); bio->bi_end_io = metapage_write_end_io; bio->bi_private = page; @@ -452,7 +452,7 @@ static int metapage_writepage(struct page *page, struct writeback_control *wbc) if (bio) { if (bio_add_page(bio, page, bio_bytes, bio_offset) < bio_bytes) goto add_failed; - if (!bio->bi_size) + if (!bio->bi_iter.bi_size) goto dump_bio; submit_bio(WRITE, bio); @@ -517,7 +517,8 @@ static int metapage_readpage(struct file *fp, struct page *page) bio = bio_alloc(GFP_NOFS, 1); bio->bi_bdev = inode->i_sb->s_bdev; - bio->bi_sector = pblock << (inode->i_blkbits - 9); + bio->bi_iter.bi_sector = + pblock << (inode->i_blkbits - 9); bio->bi_end_io = metapage_read_end_io; bio->bi_private = page; len = xlen << inode->i_blkbits; diff --git a/fs/jfs/jfs_xattr.h b/fs/jfs/jfs_xattr.h index e9e100fd7c09..e8d717dabca3 100644 --- a/fs/jfs/jfs_xattr.h +++ b/fs/jfs/jfs_xattr.h @@ -61,6 +61,8 @@ extern ssize_t jfs_getxattr(struct dentry *, const char *, void *, size_t); extern ssize_t jfs_listxattr(struct dentry *, char *, size_t); extern int jfs_removexattr(struct dentry *, const char *); +extern const struct xattr_handler *jfs_xattr_handlers[]; + #ifdef CONFIG_JFS_SECURITY extern int jfs_init_security(tid_t, struct inode *, struct inode *, const struct qstr *); diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c index aa8a3370631b..d59c7defb1ef 100644 --- a/fs/jfs/namei.c +++ b/fs/jfs/namei.c @@ -1524,6 +1524,7 @@ const struct inode_operations jfs_dir_inode_operations = { .setattr = jfs_setattr, #ifdef CONFIG_JFS_POSIX_ACL .get_acl = jfs_get_acl, + .set_acl = jfs_set_acl, #endif }; diff --git a/fs/jfs/super.c b/fs/jfs/super.c index 6669aa2042c3..97f7fda51890 100644 --- a/fs/jfs/super.c +++ b/fs/jfs/super.c @@ -44,6 +44,7 @@ #include "jfs_imap.h" #include "jfs_acl.h" #include "jfs_debug.h" +#include "jfs_xattr.h" MODULE_DESCRIPTION("The Journaled Filesystem (JFS)"); MODULE_AUTHOR("Steve Best/Dave Kleikamp/Barry Arndt, IBM"); @@ -417,6 +418,7 @@ static int jfs_remount(struct super_block *sb, int *flags, char *data) int flag = JFS_SBI(sb)->flag; int ret; + sync_filesystem(sb); if (!parse_options(data, sb, &newLVSize, &flag)) { return -EINVAL; } @@ -522,6 +524,7 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent) */ sb->s_op = &jfs_super_operations; sb->s_export_op = &jfs_export_operations; + sb->s_xattr = jfs_xattr_handlers; #ifdef CONFIG_QUOTA sb->dq_op = &dquot_operations; sb->s_qcop = &dquot_quotactl_ops; diff --git a/fs/jfs/xattr.c b/fs/jfs/xattr.c index d3472f4cd530..46325d5c34fc 100644 --- a/fs/jfs/xattr.c +++ b/fs/jfs/xattr.c @@ -666,81 +666,12 @@ static int ea_put(tid_t tid, struct inode *inode, struct ea_buffer *ea_buf, } /* - * can_set_system_xattr - * - * This code is specific to the system.* namespace. It contains policy - * which doesn't belong in the main xattr codepath. - */ -static int can_set_system_xattr(struct inode *inode, const char *name, - const void *value, size_t value_len) -{ -#ifdef CONFIG_JFS_POSIX_ACL - struct posix_acl *acl; - int rc; - - if (!inode_owner_or_capable(inode)) - return -EPERM; - - /* - * POSIX_ACL_XATTR_ACCESS is tied to i_mode - */ - if (strcmp(name, POSIX_ACL_XATTR_ACCESS) == 0) { - acl = posix_acl_from_xattr(&init_user_ns, value, value_len); - if (IS_ERR(acl)) { - rc = PTR_ERR(acl); - printk(KERN_ERR "posix_acl_from_xattr returned %d\n", - rc); - return rc; - } - if (acl) { - rc = posix_acl_equiv_mode(acl, &inode->i_mode); - posix_acl_release(acl); - if (rc < 0) { - printk(KERN_ERR - "posix_acl_equiv_mode returned %d\n", - rc); - return rc; - } - mark_inode_dirty(inode); - } - /* - * We're changing the ACL. Get rid of the cached one - */ - forget_cached_acl(inode, ACL_TYPE_ACCESS); - - return 0; - } else if (strcmp(name, POSIX_ACL_XATTR_DEFAULT) == 0) { - acl = posix_acl_from_xattr(&init_user_ns, value, value_len); - if (IS_ERR(acl)) { - rc = PTR_ERR(acl); - printk(KERN_ERR "posix_acl_from_xattr returned %d\n", - rc); - return rc; - } - posix_acl_release(acl); - - /* - * We're changing the default ACL. Get rid of the cached one - */ - forget_cached_acl(inode, ACL_TYPE_DEFAULT); - - return 0; - } -#endif /* CONFIG_JFS_POSIX_ACL */ - return -EOPNOTSUPP; -} - -/* * Most of the permission checking is done by xattr_permission in the vfs. - * The local file system is responsible for handling the system.* namespace. * We also need to verify that this is a namespace that we recognize. */ static int can_set_xattr(struct inode *inode, const char *name, const void *value, size_t value_len) { - if (!strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN)) - return can_set_system_xattr(inode, name, value, value_len); - if (!strncmp(name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN)) { /* * This makes sure that we aren't trying to set an @@ -748,7 +679,7 @@ static int can_set_xattr(struct inode *inode, const char *name, * with "os2." */ if (is_known_namespace(name + XATTR_OS2_PREFIX_LEN)) - return -EOPNOTSUPP; + return -EOPNOTSUPP; return 0; } @@ -860,6 +791,19 @@ int __jfs_setxattr(tid_t tid, struct inode *inode, const char *name, /* Completely new ea list */ xattr_size = sizeof (struct jfs_ea_list); + /* + * The size of EA value is limitted by on-disk format up to + * __le16, there would be an overflow if the size is equal + * to XATTR_SIZE_MAX (65536). In order to avoid this issue, + * we can pre-checkup the value size against USHRT_MAX, and + * return -E2BIG in this case, which is consistent with the + * VFS setxattr interface. + */ + if (value_len >= USHRT_MAX) { + rc = -E2BIG; + goto release; + } + ea = (struct jfs_ea *) ((char *) ealist + xattr_size); ea->flag = 0; ea->namelen = namelen; @@ -874,7 +818,7 @@ int __jfs_setxattr(tid_t tid, struct inode *inode, const char *name, /* DEBUG - If we did this right, these number match */ if (xattr_size != new_size) { printk(KERN_ERR - "jfs_xsetattr: xattr_size = %d, new_size = %d\n", + "__jfs_setxattr: xattr_size = %d, new_size = %d\n", xattr_size, new_size); rc = -EINVAL; @@ -910,6 +854,14 @@ int jfs_setxattr(struct dentry *dentry, const char *name, const void *value, int rc; tid_t tid; + /* + * If this is a request for a synthetic attribute in the system.* + * namespace use the generic infrastructure to resolve a handler + * for it via sb->s_xattr. + */ + if (!strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN)) + return generic_setxattr(dentry, name, value, value_len, flags); + if ((rc = can_set_xattr(inode, name, value, value_len))) return rc; @@ -986,6 +938,14 @@ ssize_t jfs_getxattr(struct dentry *dentry, const char *name, void *data, { int err; + /* + * If this is a request for a synthetic attribute in the system.* + * namespace use the generic infrastructure to resolve a handler + * for it via sb->s_xattr. + */ + if (!strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN)) + return generic_getxattr(dentry, name, data, buf_size); + if (strncmp(name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN) == 0) { /* * skip past "os2." prefix @@ -1074,6 +1034,14 @@ int jfs_removexattr(struct dentry *dentry, const char *name) int rc; tid_t tid; + /* + * If this is a request for a synthetic attribute in the system.* + * namespace use the generic infrastructure to resolve a handler + * for it via sb->s_xattr. + */ + if (!strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN)) + return generic_removexattr(dentry, name); + if ((rc = can_set_xattr(inode, name, NULL, 0))) return rc; @@ -1088,6 +1056,19 @@ int jfs_removexattr(struct dentry *dentry, const char *name) return rc; } +/* + * List of handlers for synthetic system.* attributes. All real ondisk + * attributes are handled directly. + */ +const struct xattr_handler *jfs_xattr_handlers[] = { +#ifdef CONFIG_JFS_POSIX_ACL + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, +#endif + NULL, +}; + + #ifdef CONFIG_JFS_SECURITY static int jfs_initxattrs(struct inode *inode, const struct xattr *xattr_array, void *fs_info) diff --git a/fs/kernfs/Kconfig b/fs/kernfs/Kconfig new file mode 100644 index 000000000000..397b5f7a7a16 --- /dev/null +++ b/fs/kernfs/Kconfig @@ -0,0 +1,7 @@ +# +# KERNFS should be selected by its users +# + +config KERNFS + bool + default n diff --git a/fs/kernfs/Makefile b/fs/kernfs/Makefile new file mode 100644 index 000000000000..674337c76673 --- /dev/null +++ b/fs/kernfs/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for the kernfs pseudo filesystem +# + +obj-y := mount.o inode.o dir.o file.o symlink.o diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c new file mode 100644 index 000000000000..78f3403300af --- /dev/null +++ b/fs/kernfs/dir.c @@ -0,0 +1,1428 @@ +/* + * fs/kernfs/dir.c - kernfs directory implementation + * + * Copyright (c) 2001-3 Patrick Mochel + * Copyright (c) 2007 SUSE Linux Products GmbH + * Copyright (c) 2007, 2013 Tejun Heo <tj@kernel.org> + * + * This file is released under the GPLv2. + */ + +#include <linux/sched.h> +#include <linux/fs.h> +#include <linux/namei.h> +#include <linux/idr.h> +#include <linux/slab.h> +#include <linux/security.h> +#include <linux/hash.h> + +#include "kernfs-internal.h" + +DEFINE_MUTEX(kernfs_mutex); +static DEFINE_SPINLOCK(kernfs_rename_lock); /* kn->parent and ->name */ +static char kernfs_pr_cont_buf[PATH_MAX]; /* protected by rename_lock */ + +#define rb_to_kn(X) rb_entry((X), struct kernfs_node, rb) + +static bool kernfs_active(struct kernfs_node *kn) +{ + lockdep_assert_held(&kernfs_mutex); + return atomic_read(&kn->active) >= 0; +} + +static bool kernfs_lockdep(struct kernfs_node *kn) +{ +#ifdef CONFIG_DEBUG_LOCK_ALLOC + return kn->flags & KERNFS_LOCKDEP; +#else + return false; +#endif +} + +static int kernfs_name_locked(struct kernfs_node *kn, char *buf, size_t buflen) +{ + return strlcpy(buf, kn->parent ? kn->name : "/", buflen); +} + +static char * __must_check kernfs_path_locked(struct kernfs_node *kn, char *buf, + size_t buflen) +{ + char *p = buf + buflen; + int len; + + *--p = '\0'; + + do { + len = strlen(kn->name); + if (p - buf < len + 1) { + buf[0] = '\0'; + p = NULL; + break; + } + p -= len; + memcpy(p, kn->name, len); + *--p = '/'; + kn = kn->parent; + } while (kn && kn->parent); + + return p; +} + +/** + * kernfs_name - obtain the name of a given node + * @kn: kernfs_node of interest + * @buf: buffer to copy @kn's name into + * @buflen: size of @buf + * + * Copies the name of @kn into @buf of @buflen bytes. The behavior is + * similar to strlcpy(). It returns the length of @kn's name and if @buf + * isn't long enough, it's filled upto @buflen-1 and nul terminated. + * + * This function can be called from any context. + */ +int kernfs_name(struct kernfs_node *kn, char *buf, size_t buflen) +{ + unsigned long flags; + int ret; + + spin_lock_irqsave(&kernfs_rename_lock, flags); + ret = kernfs_name_locked(kn, buf, buflen); + spin_unlock_irqrestore(&kernfs_rename_lock, flags); + return ret; +} + +/** + * kernfs_path - build full path of a given node + * @kn: kernfs_node of interest + * @buf: buffer to copy @kn's name into + * @buflen: size of @buf + * + * Builds and returns the full path of @kn in @buf of @buflen bytes. The + * path is built from the end of @buf so the returned pointer usually + * doesn't match @buf. If @buf isn't long enough, @buf is nul terminated + * and %NULL is returned. + */ +char *kernfs_path(struct kernfs_node *kn, char *buf, size_t buflen) +{ + unsigned long flags; + char *p; + + spin_lock_irqsave(&kernfs_rename_lock, flags); + p = kernfs_path_locked(kn, buf, buflen); + spin_unlock_irqrestore(&kernfs_rename_lock, flags); + return p; +} +EXPORT_SYMBOL_GPL(kernfs_path); + +/** + * pr_cont_kernfs_name - pr_cont name of a kernfs_node + * @kn: kernfs_node of interest + * + * This function can be called from any context. + */ +void pr_cont_kernfs_name(struct kernfs_node *kn) +{ + unsigned long flags; + + spin_lock_irqsave(&kernfs_rename_lock, flags); + + kernfs_name_locked(kn, kernfs_pr_cont_buf, sizeof(kernfs_pr_cont_buf)); + pr_cont("%s", kernfs_pr_cont_buf); + + spin_unlock_irqrestore(&kernfs_rename_lock, flags); +} + +/** + * pr_cont_kernfs_path - pr_cont path of a kernfs_node + * @kn: kernfs_node of interest + * + * This function can be called from any context. + */ +void pr_cont_kernfs_path(struct kernfs_node *kn) +{ + unsigned long flags; + char *p; + + spin_lock_irqsave(&kernfs_rename_lock, flags); + + p = kernfs_path_locked(kn, kernfs_pr_cont_buf, + sizeof(kernfs_pr_cont_buf)); + if (p) + pr_cont("%s", p); + else + pr_cont("<name too long>"); + + spin_unlock_irqrestore(&kernfs_rename_lock, flags); +} + +/** + * kernfs_get_parent - determine the parent node and pin it + * @kn: kernfs_node of interest + * + * Determines @kn's parent, pins and returns it. This function can be + * called from any context. + */ +struct kernfs_node *kernfs_get_parent(struct kernfs_node *kn) +{ + struct kernfs_node *parent; + unsigned long flags; + + spin_lock_irqsave(&kernfs_rename_lock, flags); + parent = kn->parent; + kernfs_get(parent); + spin_unlock_irqrestore(&kernfs_rename_lock, flags); + + return parent; +} + +/** + * kernfs_name_hash + * @name: Null terminated string to hash + * @ns: Namespace tag to hash + * + * Returns 31 bit hash of ns + name (so it fits in an off_t ) + */ +static unsigned int kernfs_name_hash(const char *name, const void *ns) +{ + unsigned long hash = init_name_hash(); + unsigned int len = strlen(name); + while (len--) + hash = partial_name_hash(*name++, hash); + hash = (end_name_hash(hash) ^ hash_ptr((void *)ns, 31)); + hash &= 0x7fffffffU; + /* Reserve hash numbers 0, 1 and INT_MAX for magic directory entries */ + if (hash < 2) + hash += 2; + if (hash >= INT_MAX) + hash = INT_MAX - 1; + return hash; +} + +static int kernfs_name_compare(unsigned int hash, const char *name, + const void *ns, const struct kernfs_node *kn) +{ + if (hash != kn->hash) + return hash - kn->hash; + if (ns != kn->ns) + return ns - kn->ns; + return strcmp(name, kn->name); +} + +static int kernfs_sd_compare(const struct kernfs_node *left, + const struct kernfs_node *right) +{ + return kernfs_name_compare(left->hash, left->name, left->ns, right); +} + +/** + * kernfs_link_sibling - link kernfs_node into sibling rbtree + * @kn: kernfs_node of interest + * + * Link @kn into its sibling rbtree which starts from + * @kn->parent->dir.children. + * + * Locking: + * mutex_lock(kernfs_mutex) + * + * RETURNS: + * 0 on susccess -EEXIST on failure. + */ +static int kernfs_link_sibling(struct kernfs_node *kn) +{ + struct rb_node **node = &kn->parent->dir.children.rb_node; + struct rb_node *parent = NULL; + + if (kernfs_type(kn) == KERNFS_DIR) + kn->parent->dir.subdirs++; + + while (*node) { + struct kernfs_node *pos; + int result; + + pos = rb_to_kn(*node); + parent = *node; + result = kernfs_sd_compare(kn, pos); + if (result < 0) + node = &pos->rb.rb_left; + else if (result > 0) + node = &pos->rb.rb_right; + else + return -EEXIST; + } + /* add new node and rebalance the tree */ + rb_link_node(&kn->rb, parent, node); + rb_insert_color(&kn->rb, &kn->parent->dir.children); + return 0; +} + +/** + * kernfs_unlink_sibling - unlink kernfs_node from sibling rbtree + * @kn: kernfs_node of interest + * + * Try to unlink @kn from its sibling rbtree which starts from + * kn->parent->dir.children. Returns %true if @kn was actually + * removed, %false if @kn wasn't on the rbtree. + * + * Locking: + * mutex_lock(kernfs_mutex) + */ +static bool kernfs_unlink_sibling(struct kernfs_node *kn) +{ + if (RB_EMPTY_NODE(&kn->rb)) + return false; + + if (kernfs_type(kn) == KERNFS_DIR) + kn->parent->dir.subdirs--; + + rb_erase(&kn->rb, &kn->parent->dir.children); + RB_CLEAR_NODE(&kn->rb); + return true; +} + +/** + * kernfs_get_active - get an active reference to kernfs_node + * @kn: kernfs_node to get an active reference to + * + * Get an active reference of @kn. This function is noop if @kn + * is NULL. + * + * RETURNS: + * Pointer to @kn on success, NULL on failure. + */ +struct kernfs_node *kernfs_get_active(struct kernfs_node *kn) +{ + if (unlikely(!kn)) + return NULL; + + if (!atomic_inc_unless_negative(&kn->active)) + return NULL; + + if (kernfs_lockdep(kn)) + rwsem_acquire_read(&kn->dep_map, 0, 1, _RET_IP_); + return kn; +} + +/** + * kernfs_put_active - put an active reference to kernfs_node + * @kn: kernfs_node to put an active reference to + * + * Put an active reference to @kn. This function is noop if @kn + * is NULL. + */ +void kernfs_put_active(struct kernfs_node *kn) +{ + struct kernfs_root *root = kernfs_root(kn); + int v; + + if (unlikely(!kn)) + return; + + if (kernfs_lockdep(kn)) + rwsem_release(&kn->dep_map, 1, _RET_IP_); + v = atomic_dec_return(&kn->active); + if (likely(v != KN_DEACTIVATED_BIAS)) + return; + + wake_up_all(&root->deactivate_waitq); +} + +/** + * kernfs_drain - drain kernfs_node + * @kn: kernfs_node to drain + * + * Drain existing usages and nuke all existing mmaps of @kn. Mutiple + * removers may invoke this function concurrently on @kn and all will + * return after draining is complete. + */ +static void kernfs_drain(struct kernfs_node *kn) + __releases(&kernfs_mutex) __acquires(&kernfs_mutex) +{ + struct kernfs_root *root = kernfs_root(kn); + + lockdep_assert_held(&kernfs_mutex); + WARN_ON_ONCE(kernfs_active(kn)); + + mutex_unlock(&kernfs_mutex); + + if (kernfs_lockdep(kn)) { + rwsem_acquire(&kn->dep_map, 0, 0, _RET_IP_); + if (atomic_read(&kn->active) != KN_DEACTIVATED_BIAS) + lock_contended(&kn->dep_map, _RET_IP_); + } + + /* but everyone should wait for draining */ + wait_event(root->deactivate_waitq, + atomic_read(&kn->active) == KN_DEACTIVATED_BIAS); + + if (kernfs_lockdep(kn)) { + lock_acquired(&kn->dep_map, _RET_IP_); + rwsem_release(&kn->dep_map, 1, _RET_IP_); + } + + kernfs_unmap_bin_file(kn); + + mutex_lock(&kernfs_mutex); +} + +/** + * kernfs_get - get a reference count on a kernfs_node + * @kn: the target kernfs_node + */ +void kernfs_get(struct kernfs_node *kn) +{ + if (kn) { + WARN_ON(!atomic_read(&kn->count)); + atomic_inc(&kn->count); + } +} +EXPORT_SYMBOL_GPL(kernfs_get); + +/** + * kernfs_put - put a reference count on a kernfs_node + * @kn: the target kernfs_node + * + * Put a reference count of @kn and destroy it if it reached zero. + */ +void kernfs_put(struct kernfs_node *kn) +{ + struct kernfs_node *parent; + struct kernfs_root *root; + + if (!kn || !atomic_dec_and_test(&kn->count)) + return; + root = kernfs_root(kn); + repeat: + /* + * Moving/renaming is always done while holding reference. + * kn->parent won't change beneath us. + */ + parent = kn->parent; + + WARN_ONCE(atomic_read(&kn->active) != KN_DEACTIVATED_BIAS, + "kernfs_put: %s/%s: released with incorrect active_ref %d\n", + parent ? parent->name : "", kn->name, atomic_read(&kn->active)); + + if (kernfs_type(kn) == KERNFS_LINK) + kernfs_put(kn->symlink.target_kn); + if (!(kn->flags & KERNFS_STATIC_NAME)) + kfree(kn->name); + if (kn->iattr) { + if (kn->iattr->ia_secdata) + security_release_secctx(kn->iattr->ia_secdata, + kn->iattr->ia_secdata_len); + simple_xattrs_free(&kn->iattr->xattrs); + } + kfree(kn->iattr); + ida_simple_remove(&root->ino_ida, kn->ino); + kmem_cache_free(kernfs_node_cache, kn); + + kn = parent; + if (kn) { + if (atomic_dec_and_test(&kn->count)) + goto repeat; + } else { + /* just released the root kn, free @root too */ + ida_destroy(&root->ino_ida); + kfree(root); + } +} +EXPORT_SYMBOL_GPL(kernfs_put); + +static int kernfs_dop_revalidate(struct dentry *dentry, unsigned int flags) +{ + struct kernfs_node *kn; + + if (flags & LOOKUP_RCU) + return -ECHILD; + + /* Always perform fresh lookup for negatives */ + if (!dentry->d_inode) + goto out_bad_unlocked; + + kn = dentry->d_fsdata; + mutex_lock(&kernfs_mutex); + + /* The kernfs node has been deactivated */ + if (!kernfs_active(kn)) + goto out_bad; + + /* The kernfs node has been moved? */ + if (dentry->d_parent->d_fsdata != kn->parent) + goto out_bad; + + /* The kernfs node has been renamed */ + if (strcmp(dentry->d_name.name, kn->name) != 0) + goto out_bad; + + /* The kernfs node has been moved to a different namespace */ + if (kn->parent && kernfs_ns_enabled(kn->parent) && + kernfs_info(dentry->d_sb)->ns != kn->ns) + goto out_bad; + + mutex_unlock(&kernfs_mutex); +out_valid: + return 1; +out_bad: + mutex_unlock(&kernfs_mutex); +out_bad_unlocked: + /* + * @dentry doesn't match the underlying kernfs node, drop the + * dentry and force lookup. If we have submounts we must allow the + * vfs caches to lie about the state of the filesystem to prevent + * leaks and other nasty things, so use check_submounts_and_drop() + * instead of d_drop(). + */ + if (check_submounts_and_drop(dentry) != 0) + goto out_valid; + + return 0; +} + +static void kernfs_dop_release(struct dentry *dentry) +{ + kernfs_put(dentry->d_fsdata); +} + +const struct dentry_operations kernfs_dops = { + .d_revalidate = kernfs_dop_revalidate, + .d_release = kernfs_dop_release, +}; + +/** + * kernfs_node_from_dentry - determine kernfs_node associated with a dentry + * @dentry: the dentry in question + * + * Return the kernfs_node associated with @dentry. If @dentry is not a + * kernfs one, %NULL is returned. + * + * While the returned kernfs_node will stay accessible as long as @dentry + * is accessible, the returned node can be in any state and the caller is + * fully responsible for determining what's accessible. + */ +struct kernfs_node *kernfs_node_from_dentry(struct dentry *dentry) +{ + if (dentry->d_sb->s_op == &kernfs_sops) + return dentry->d_fsdata; + return NULL; +} + +static struct kernfs_node *__kernfs_new_node(struct kernfs_root *root, + const char *name, umode_t mode, + unsigned flags) +{ + char *dup_name = NULL; + struct kernfs_node *kn; + int ret; + + if (!(flags & KERNFS_STATIC_NAME)) { + name = dup_name = kstrdup(name, GFP_KERNEL); + if (!name) + return NULL; + } + + kn = kmem_cache_zalloc(kernfs_node_cache, GFP_KERNEL); + if (!kn) + goto err_out1; + + ret = ida_simple_get(&root->ino_ida, 1, 0, GFP_KERNEL); + if (ret < 0) + goto err_out2; + kn->ino = ret; + + atomic_set(&kn->count, 1); + atomic_set(&kn->active, KN_DEACTIVATED_BIAS); + RB_CLEAR_NODE(&kn->rb); + + kn->name = name; + kn->mode = mode; + kn->flags = flags; + + return kn; + + err_out2: + kmem_cache_free(kernfs_node_cache, kn); + err_out1: + kfree(dup_name); + return NULL; +} + +struct kernfs_node *kernfs_new_node(struct kernfs_node *parent, + const char *name, umode_t mode, + unsigned flags) +{ + struct kernfs_node *kn; + + kn = __kernfs_new_node(kernfs_root(parent), name, mode, flags); + if (kn) { + kernfs_get(parent); + kn->parent = parent; + } + return kn; +} + +/** + * kernfs_add_one - add kernfs_node to parent without warning + * @kn: kernfs_node to be added + * + * The caller must already have initialized @kn->parent. This + * function increments nlink of the parent's inode if @kn is a + * directory and link into the children list of the parent. + * + * RETURNS: + * 0 on success, -EEXIST if entry with the given name already + * exists. + */ +int kernfs_add_one(struct kernfs_node *kn) +{ + struct kernfs_node *parent = kn->parent; + struct kernfs_iattrs *ps_iattr; + bool has_ns; + int ret; + + mutex_lock(&kernfs_mutex); + + ret = -EINVAL; + has_ns = kernfs_ns_enabled(parent); + if (WARN(has_ns != (bool)kn->ns, KERN_WARNING "kernfs: ns %s in '%s' for '%s'\n", + has_ns ? "required" : "invalid", parent->name, kn->name)) + goto out_unlock; + + if (kernfs_type(parent) != KERNFS_DIR) + goto out_unlock; + + ret = -ENOENT; + if ((parent->flags & KERNFS_ACTIVATED) && !kernfs_active(parent)) + goto out_unlock; + + kn->hash = kernfs_name_hash(kn->name, kn->ns); + + ret = kernfs_link_sibling(kn); + if (ret) + goto out_unlock; + + /* Update timestamps on the parent */ + ps_iattr = parent->iattr; + if (ps_iattr) { + struct iattr *ps_iattrs = &ps_iattr->ia_iattr; + ps_iattrs->ia_ctime = ps_iattrs->ia_mtime = CURRENT_TIME; + } + + mutex_unlock(&kernfs_mutex); + + /* + * Activate the new node unless CREATE_DEACTIVATED is requested. + * If not activated here, the kernfs user is responsible for + * activating the node with kernfs_activate(). A node which hasn't + * been activated is not visible to userland and its removal won't + * trigger deactivation. + */ + if (!(kernfs_root(kn)->flags & KERNFS_ROOT_CREATE_DEACTIVATED)) + kernfs_activate(kn); + return 0; + +out_unlock: + mutex_unlock(&kernfs_mutex); + return ret; +} + +/** + * kernfs_find_ns - find kernfs_node with the given name + * @parent: kernfs_node to search under + * @name: name to look for + * @ns: the namespace tag to use + * + * Look for kernfs_node with name @name under @parent. Returns pointer to + * the found kernfs_node on success, %NULL on failure. + */ +static struct kernfs_node *kernfs_find_ns(struct kernfs_node *parent, + const unsigned char *name, + const void *ns) +{ + struct rb_node *node = parent->dir.children.rb_node; + bool has_ns = kernfs_ns_enabled(parent); + unsigned int hash; + + lockdep_assert_held(&kernfs_mutex); + + if (has_ns != (bool)ns) { + WARN(1, KERN_WARNING "kernfs: ns %s in '%s' for '%s'\n", + has_ns ? "required" : "invalid", parent->name, name); + return NULL; + } + + hash = kernfs_name_hash(name, ns); + while (node) { + struct kernfs_node *kn; + int result; + + kn = rb_to_kn(node); + result = kernfs_name_compare(hash, name, ns, kn); + if (result < 0) + node = node->rb_left; + else if (result > 0) + node = node->rb_right; + else + return kn; + } + return NULL; +} + +/** + * kernfs_find_and_get_ns - find and get kernfs_node with the given name + * @parent: kernfs_node to search under + * @name: name to look for + * @ns: the namespace tag to use + * + * Look for kernfs_node with name @name under @parent and get a reference + * if found. This function may sleep and returns pointer to the found + * kernfs_node on success, %NULL on failure. + */ +struct kernfs_node *kernfs_find_and_get_ns(struct kernfs_node *parent, + const char *name, const void *ns) +{ + struct kernfs_node *kn; + + mutex_lock(&kernfs_mutex); + kn = kernfs_find_ns(parent, name, ns); + kernfs_get(kn); + mutex_unlock(&kernfs_mutex); + + return kn; +} +EXPORT_SYMBOL_GPL(kernfs_find_and_get_ns); + +/** + * kernfs_create_root - create a new kernfs hierarchy + * @scops: optional syscall operations for the hierarchy + * @flags: KERNFS_ROOT_* flags + * @priv: opaque data associated with the new directory + * + * Returns the root of the new hierarchy on success, ERR_PTR() value on + * failure. + */ +struct kernfs_root *kernfs_create_root(struct kernfs_syscall_ops *scops, + unsigned int flags, void *priv) +{ + struct kernfs_root *root; + struct kernfs_node *kn; + + root = kzalloc(sizeof(*root), GFP_KERNEL); + if (!root) + return ERR_PTR(-ENOMEM); + + ida_init(&root->ino_ida); + + kn = __kernfs_new_node(root, "", S_IFDIR | S_IRUGO | S_IXUGO, + KERNFS_DIR); + if (!kn) { + ida_destroy(&root->ino_ida); + kfree(root); + return ERR_PTR(-ENOMEM); + } + + kn->priv = priv; + kn->dir.root = root; + + root->syscall_ops = scops; + root->flags = flags; + root->kn = kn; + init_waitqueue_head(&root->deactivate_waitq); + + if (!(root->flags & KERNFS_ROOT_CREATE_DEACTIVATED)) + kernfs_activate(kn); + + return root; +} + +/** + * kernfs_destroy_root - destroy a kernfs hierarchy + * @root: root of the hierarchy to destroy + * + * Destroy the hierarchy anchored at @root by removing all existing + * directories and destroying @root. + */ +void kernfs_destroy_root(struct kernfs_root *root) +{ + kernfs_remove(root->kn); /* will also free @root */ +} + +/** + * kernfs_create_dir_ns - create a directory + * @parent: parent in which to create a new directory + * @name: name of the new directory + * @mode: mode of the new directory + * @priv: opaque data associated with the new directory + * @ns: optional namespace tag of the directory + * + * Returns the created node on success, ERR_PTR() value on failure. + */ +struct kernfs_node *kernfs_create_dir_ns(struct kernfs_node *parent, + const char *name, umode_t mode, + void *priv, const void *ns) +{ + struct kernfs_node *kn; + int rc; + + /* allocate */ + kn = kernfs_new_node(parent, name, mode | S_IFDIR, KERNFS_DIR); + if (!kn) + return ERR_PTR(-ENOMEM); + + kn->dir.root = parent->dir.root; + kn->ns = ns; + kn->priv = priv; + + /* link in */ + rc = kernfs_add_one(kn); + if (!rc) + return kn; + + kernfs_put(kn); + return ERR_PTR(rc); +} + +static struct dentry *kernfs_iop_lookup(struct inode *dir, + struct dentry *dentry, + unsigned int flags) +{ + struct dentry *ret; + struct kernfs_node *parent = dentry->d_parent->d_fsdata; + struct kernfs_node *kn; + struct inode *inode; + const void *ns = NULL; + + mutex_lock(&kernfs_mutex); + + if (kernfs_ns_enabled(parent)) + ns = kernfs_info(dir->i_sb)->ns; + + kn = kernfs_find_ns(parent, dentry->d_name.name, ns); + + /* no such entry */ + if (!kn || !kernfs_active(kn)) { + ret = NULL; + goto out_unlock; + } + kernfs_get(kn); + dentry->d_fsdata = kn; + + /* attach dentry and inode */ + inode = kernfs_get_inode(dir->i_sb, kn); + if (!inode) { + ret = ERR_PTR(-ENOMEM); + goto out_unlock; + } + + /* instantiate and hash dentry */ + ret = d_materialise_unique(dentry, inode); + out_unlock: + mutex_unlock(&kernfs_mutex); + return ret; +} + +static int kernfs_iop_mkdir(struct inode *dir, struct dentry *dentry, + umode_t mode) +{ + struct kernfs_node *parent = dir->i_private; + struct kernfs_syscall_ops *scops = kernfs_root(parent)->syscall_ops; + int ret; + + if (!scops || !scops->mkdir) + return -EPERM; + + if (!kernfs_get_active(parent)) + return -ENODEV; + + ret = scops->mkdir(parent, dentry->d_name.name, mode); + + kernfs_put_active(parent); + return ret; +} + +static int kernfs_iop_rmdir(struct inode *dir, struct dentry *dentry) +{ + struct kernfs_node *kn = dentry->d_fsdata; + struct kernfs_syscall_ops *scops = kernfs_root(kn)->syscall_ops; + int ret; + + if (!scops || !scops->rmdir) + return -EPERM; + + if (!kernfs_get_active(kn)) + return -ENODEV; + + ret = scops->rmdir(kn); + + kernfs_put_active(kn); + return ret; +} + +static int kernfs_iop_rename(struct inode *old_dir, struct dentry *old_dentry, + struct inode *new_dir, struct dentry *new_dentry) +{ + struct kernfs_node *kn = old_dentry->d_fsdata; + struct kernfs_node *new_parent = new_dir->i_private; + struct kernfs_syscall_ops *scops = kernfs_root(kn)->syscall_ops; + int ret; + + if (!scops || !scops->rename) + return -EPERM; + + if (!kernfs_get_active(kn)) + return -ENODEV; + + if (!kernfs_get_active(new_parent)) { + kernfs_put_active(kn); + return -ENODEV; + } + + ret = scops->rename(kn, new_parent, new_dentry->d_name.name); + + kernfs_put_active(new_parent); + kernfs_put_active(kn); + return ret; +} + +const struct inode_operations kernfs_dir_iops = { + .lookup = kernfs_iop_lookup, + .permission = kernfs_iop_permission, + .setattr = kernfs_iop_setattr, + .getattr = kernfs_iop_getattr, + .setxattr = kernfs_iop_setxattr, + .removexattr = kernfs_iop_removexattr, + .getxattr = kernfs_iop_getxattr, + .listxattr = kernfs_iop_listxattr, + + .mkdir = kernfs_iop_mkdir, + .rmdir = kernfs_iop_rmdir, + .rename = kernfs_iop_rename, +}; + +static struct kernfs_node *kernfs_leftmost_descendant(struct kernfs_node *pos) +{ + struct kernfs_node *last; + + while (true) { + struct rb_node *rbn; + + last = pos; + + if (kernfs_type(pos) != KERNFS_DIR) + break; + + rbn = rb_first(&pos->dir.children); + if (!rbn) + break; + + pos = rb_to_kn(rbn); + } + + return last; +} + +/** + * kernfs_next_descendant_post - find the next descendant for post-order walk + * @pos: the current position (%NULL to initiate traversal) + * @root: kernfs_node whose descendants to walk + * + * Find the next descendant to visit for post-order traversal of @root's + * descendants. @root is included in the iteration and the last node to be + * visited. + */ +static struct kernfs_node *kernfs_next_descendant_post(struct kernfs_node *pos, + struct kernfs_node *root) +{ + struct rb_node *rbn; + + lockdep_assert_held(&kernfs_mutex); + + /* if first iteration, visit leftmost descendant which may be root */ + if (!pos) + return kernfs_leftmost_descendant(root); + + /* if we visited @root, we're done */ + if (pos == root) + return NULL; + + /* if there's an unvisited sibling, visit its leftmost descendant */ + rbn = rb_next(&pos->rb); + if (rbn) + return kernfs_leftmost_descendant(rb_to_kn(rbn)); + + /* no sibling left, visit parent */ + return pos->parent; +} + +/** + * kernfs_activate - activate a node which started deactivated + * @kn: kernfs_node whose subtree is to be activated + * + * If the root has KERNFS_ROOT_CREATE_DEACTIVATED set, a newly created node + * needs to be explicitly activated. A node which hasn't been activated + * isn't visible to userland and deactivation is skipped during its + * removal. This is useful to construct atomic init sequences where + * creation of multiple nodes should either succeed or fail atomically. + * + * The caller is responsible for ensuring that this function is not called + * after kernfs_remove*() is invoked on @kn. + */ +void kernfs_activate(struct kernfs_node *kn) +{ + struct kernfs_node *pos; + + mutex_lock(&kernfs_mutex); + + pos = NULL; + while ((pos = kernfs_next_descendant_post(pos, kn))) { + if (!pos || (pos->flags & KERNFS_ACTIVATED)) + continue; + + WARN_ON_ONCE(pos->parent && RB_EMPTY_NODE(&pos->rb)); + WARN_ON_ONCE(atomic_read(&pos->active) != KN_DEACTIVATED_BIAS); + + atomic_sub(KN_DEACTIVATED_BIAS, &pos->active); + pos->flags |= KERNFS_ACTIVATED; + } + + mutex_unlock(&kernfs_mutex); +} + +static void __kernfs_remove(struct kernfs_node *kn) +{ + struct kernfs_node *pos; + + lockdep_assert_held(&kernfs_mutex); + + /* + * Short-circuit if non-root @kn has already finished removal. + * This is for kernfs_remove_self() which plays with active ref + * after removal. + */ + if (!kn || (kn->parent && RB_EMPTY_NODE(&kn->rb))) + return; + + pr_debug("kernfs %s: removing\n", kn->name); + + /* prevent any new usage under @kn by deactivating all nodes */ + pos = NULL; + while ((pos = kernfs_next_descendant_post(pos, kn))) + if (kernfs_active(pos)) + atomic_add(KN_DEACTIVATED_BIAS, &pos->active); + + /* deactivate and unlink the subtree node-by-node */ + do { + pos = kernfs_leftmost_descendant(kn); + + /* + * kernfs_drain() drops kernfs_mutex temporarily and @pos's + * base ref could have been put by someone else by the time + * the function returns. Make sure it doesn't go away + * underneath us. + */ + kernfs_get(pos); + + /* + * Drain iff @kn was activated. This avoids draining and + * its lockdep annotations for nodes which have never been + * activated and allows embedding kernfs_remove() in create + * error paths without worrying about draining. + */ + if (kn->flags & KERNFS_ACTIVATED) + kernfs_drain(pos); + else + WARN_ON_ONCE(atomic_read(&kn->active) != KN_DEACTIVATED_BIAS); + + /* + * kernfs_unlink_sibling() succeeds once per node. Use it + * to decide who's responsible for cleanups. + */ + if (!pos->parent || kernfs_unlink_sibling(pos)) { + struct kernfs_iattrs *ps_iattr = + pos->parent ? pos->parent->iattr : NULL; + + /* update timestamps on the parent */ + if (ps_iattr) { + ps_iattr->ia_iattr.ia_ctime = CURRENT_TIME; + ps_iattr->ia_iattr.ia_mtime = CURRENT_TIME; + } + + kernfs_put(pos); + } + + kernfs_put(pos); + } while (pos != kn); +} + +/** + * kernfs_remove - remove a kernfs_node recursively + * @kn: the kernfs_node to remove + * + * Remove @kn along with all its subdirectories and files. + */ +void kernfs_remove(struct kernfs_node *kn) +{ + mutex_lock(&kernfs_mutex); + __kernfs_remove(kn); + mutex_unlock(&kernfs_mutex); +} + +/** + * kernfs_break_active_protection - break out of active protection + * @kn: the self kernfs_node + * + * The caller must be running off of a kernfs operation which is invoked + * with an active reference - e.g. one of kernfs_ops. Each invocation of + * this function must also be matched with an invocation of + * kernfs_unbreak_active_protection(). + * + * This function releases the active reference of @kn the caller is + * holding. Once this function is called, @kn may be removed at any point + * and the caller is solely responsible for ensuring that the objects it + * dereferences are accessible. + */ +void kernfs_break_active_protection(struct kernfs_node *kn) +{ + /* + * Take out ourself out of the active ref dependency chain. If + * we're called without an active ref, lockdep will complain. + */ + kernfs_put_active(kn); +} + +/** + * kernfs_unbreak_active_protection - undo kernfs_break_active_protection() + * @kn: the self kernfs_node + * + * If kernfs_break_active_protection() was called, this function must be + * invoked before finishing the kernfs operation. Note that while this + * function restores the active reference, it doesn't and can't actually + * restore the active protection - @kn may already or be in the process of + * being removed. Once kernfs_break_active_protection() is invoked, that + * protection is irreversibly gone for the kernfs operation instance. + * + * While this function may be called at any point after + * kernfs_break_active_protection() is invoked, its most useful location + * would be right before the enclosing kernfs operation returns. + */ +void kernfs_unbreak_active_protection(struct kernfs_node *kn) +{ + /* + * @kn->active could be in any state; however, the increment we do + * here will be undone as soon as the enclosing kernfs operation + * finishes and this temporary bump can't break anything. If @kn + * is alive, nothing changes. If @kn is being deactivated, the + * soon-to-follow put will either finish deactivation or restore + * deactivated state. If @kn is already removed, the temporary + * bump is guaranteed to be gone before @kn is released. + */ + atomic_inc(&kn->active); + if (kernfs_lockdep(kn)) + rwsem_acquire(&kn->dep_map, 0, 1, _RET_IP_); +} + +/** + * kernfs_remove_self - remove a kernfs_node from its own method + * @kn: the self kernfs_node to remove + * + * The caller must be running off of a kernfs operation which is invoked + * with an active reference - e.g. one of kernfs_ops. This can be used to + * implement a file operation which deletes itself. + * + * For example, the "delete" file for a sysfs device directory can be + * implemented by invoking kernfs_remove_self() on the "delete" file + * itself. This function breaks the circular dependency of trying to + * deactivate self while holding an active ref itself. It isn't necessary + * to modify the usual removal path to use kernfs_remove_self(). The + * "delete" implementation can simply invoke kernfs_remove_self() on self + * before proceeding with the usual removal path. kernfs will ignore later + * kernfs_remove() on self. + * + * kernfs_remove_self() can be called multiple times concurrently on the + * same kernfs_node. Only the first one actually performs removal and + * returns %true. All others will wait until the kernfs operation which + * won self-removal finishes and return %false. Note that the losers wait + * for the completion of not only the winning kernfs_remove_self() but also + * the whole kernfs_ops which won the arbitration. This can be used to + * guarantee, for example, all concurrent writes to a "delete" file to + * finish only after the whole operation is complete. + */ +bool kernfs_remove_self(struct kernfs_node *kn) +{ + bool ret; + + mutex_lock(&kernfs_mutex); + kernfs_break_active_protection(kn); + + /* + * SUICIDAL is used to arbitrate among competing invocations. Only + * the first one will actually perform removal. When the removal + * is complete, SUICIDED is set and the active ref is restored + * while holding kernfs_mutex. The ones which lost arbitration + * waits for SUICDED && drained which can happen only after the + * enclosing kernfs operation which executed the winning instance + * of kernfs_remove_self() finished. + */ + if (!(kn->flags & KERNFS_SUICIDAL)) { + kn->flags |= KERNFS_SUICIDAL; + __kernfs_remove(kn); + kn->flags |= KERNFS_SUICIDED; + ret = true; + } else { + wait_queue_head_t *waitq = &kernfs_root(kn)->deactivate_waitq; + DEFINE_WAIT(wait); + + while (true) { + prepare_to_wait(waitq, &wait, TASK_UNINTERRUPTIBLE); + + if ((kn->flags & KERNFS_SUICIDED) && + atomic_read(&kn->active) == KN_DEACTIVATED_BIAS) + break; + + mutex_unlock(&kernfs_mutex); + schedule(); + mutex_lock(&kernfs_mutex); + } + finish_wait(waitq, &wait); + WARN_ON_ONCE(!RB_EMPTY_NODE(&kn->rb)); + ret = false; + } + + /* + * This must be done while holding kernfs_mutex; otherwise, waiting + * for SUICIDED && deactivated could finish prematurely. + */ + kernfs_unbreak_active_protection(kn); + + mutex_unlock(&kernfs_mutex); + return ret; +} + +/** + * kernfs_remove_by_name_ns - find a kernfs_node by name and remove it + * @parent: parent of the target + * @name: name of the kernfs_node to remove + * @ns: namespace tag of the kernfs_node to remove + * + * Look for the kernfs_node with @name and @ns under @parent and remove it. + * Returns 0 on success, -ENOENT if such entry doesn't exist. + */ +int kernfs_remove_by_name_ns(struct kernfs_node *parent, const char *name, + const void *ns) +{ + struct kernfs_node *kn; + + if (!parent) { + WARN(1, KERN_WARNING "kernfs: can not remove '%s', no directory\n", + name); + return -ENOENT; + } + + mutex_lock(&kernfs_mutex); + + kn = kernfs_find_ns(parent, name, ns); + if (kn) + __kernfs_remove(kn); + + mutex_unlock(&kernfs_mutex); + + if (kn) + return 0; + else + return -ENOENT; +} + +/** + * kernfs_rename_ns - move and rename a kernfs_node + * @kn: target node + * @new_parent: new parent to put @sd under + * @new_name: new name + * @new_ns: new namespace tag + */ +int kernfs_rename_ns(struct kernfs_node *kn, struct kernfs_node *new_parent, + const char *new_name, const void *new_ns) +{ + struct kernfs_node *old_parent; + const char *old_name = NULL; + int error; + + /* can't move or rename root */ + if (!kn->parent) + return -EINVAL; + + mutex_lock(&kernfs_mutex); + + error = -ENOENT; + if (!kernfs_active(kn) || !kernfs_active(new_parent)) + goto out; + + error = 0; + if ((kn->parent == new_parent) && (kn->ns == new_ns) && + (strcmp(kn->name, new_name) == 0)) + goto out; /* nothing to rename */ + + error = -EEXIST; + if (kernfs_find_ns(new_parent, new_name, new_ns)) + goto out; + + /* rename kernfs_node */ + if (strcmp(kn->name, new_name) != 0) { + error = -ENOMEM; + new_name = kstrdup(new_name, GFP_KERNEL); + if (!new_name) + goto out; + } else { + new_name = NULL; + } + + /* + * Move to the appropriate place in the appropriate directories rbtree. + */ + kernfs_unlink_sibling(kn); + kernfs_get(new_parent); + + /* rename_lock protects ->parent and ->name accessors */ + spin_lock_irq(&kernfs_rename_lock); + + old_parent = kn->parent; + kn->parent = new_parent; + + kn->ns = new_ns; + if (new_name) { + if (!(kn->flags & KERNFS_STATIC_NAME)) + old_name = kn->name; + kn->flags &= ~KERNFS_STATIC_NAME; + kn->name = new_name; + } + + spin_unlock_irq(&kernfs_rename_lock); + + kn->hash = kernfs_name_hash(kn->name, kn->ns); + kernfs_link_sibling(kn); + + kernfs_put(old_parent); + kfree(old_name); + + error = 0; + out: + mutex_unlock(&kernfs_mutex); + return error; +} + +/* Relationship between s_mode and the DT_xxx types */ +static inline unsigned char dt_type(struct kernfs_node *kn) +{ + return (kn->mode >> 12) & 15; +} + +static int kernfs_dir_fop_release(struct inode *inode, struct file *filp) +{ + kernfs_put(filp->private_data); + return 0; +} + +static struct kernfs_node *kernfs_dir_pos(const void *ns, + struct kernfs_node *parent, loff_t hash, struct kernfs_node *pos) +{ + if (pos) { + int valid = kernfs_active(pos) && + pos->parent == parent && hash == pos->hash; + kernfs_put(pos); + if (!valid) + pos = NULL; + } + if (!pos && (hash > 1) && (hash < INT_MAX)) { + struct rb_node *node = parent->dir.children.rb_node; + while (node) { + pos = rb_to_kn(node); + + if (hash < pos->hash) + node = node->rb_left; + else if (hash > pos->hash) + node = node->rb_right; + else + break; + } + } + /* Skip over entries which are dying/dead or in the wrong namespace */ + while (pos && (!kernfs_active(pos) || pos->ns != ns)) { + struct rb_node *node = rb_next(&pos->rb); + if (!node) + pos = NULL; + else + pos = rb_to_kn(node); + } + return pos; +} + +static struct kernfs_node *kernfs_dir_next_pos(const void *ns, + struct kernfs_node *parent, ino_t ino, struct kernfs_node *pos) +{ + pos = kernfs_dir_pos(ns, parent, ino, pos); + if (pos) { + do { + struct rb_node *node = rb_next(&pos->rb); + if (!node) + pos = NULL; + else + pos = rb_to_kn(node); + } while (pos && (!kernfs_active(pos) || pos->ns != ns)); + } + return pos; +} + +static int kernfs_fop_readdir(struct file *file, struct dir_context *ctx) +{ + struct dentry *dentry = file->f_path.dentry; + struct kernfs_node *parent = dentry->d_fsdata; + struct kernfs_node *pos = file->private_data; + const void *ns = NULL; + + if (!dir_emit_dots(file, ctx)) + return 0; + mutex_lock(&kernfs_mutex); + + if (kernfs_ns_enabled(parent)) + ns = kernfs_info(dentry->d_sb)->ns; + + for (pos = kernfs_dir_pos(ns, parent, ctx->pos, pos); + pos; + pos = kernfs_dir_next_pos(ns, parent, ctx->pos, pos)) { + const char *name = pos->name; + unsigned int type = dt_type(pos); + int len = strlen(name); + ino_t ino = pos->ino; + + ctx->pos = pos->hash; + file->private_data = pos; + kernfs_get(pos); + + mutex_unlock(&kernfs_mutex); + if (!dir_emit(ctx, name, len, ino, type)) + return 0; + mutex_lock(&kernfs_mutex); + } + mutex_unlock(&kernfs_mutex); + file->private_data = NULL; + ctx->pos = INT_MAX; + return 0; +} + +static loff_t kernfs_dir_fop_llseek(struct file *file, loff_t offset, + int whence) +{ + struct inode *inode = file_inode(file); + loff_t ret; + + mutex_lock(&inode->i_mutex); + ret = generic_file_llseek(file, offset, whence); + mutex_unlock(&inode->i_mutex); + + return ret; +} + +const struct file_operations kernfs_dir_fops = { + .read = generic_read_dir, + .iterate = kernfs_fop_readdir, + .release = kernfs_dir_fop_release, + .llseek = kernfs_dir_fop_llseek, +}; diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c new file mode 100644 index 000000000000..8034706a7af8 --- /dev/null +++ b/fs/kernfs/file.c @@ -0,0 +1,877 @@ +/* + * fs/kernfs/file.c - kernfs file implementation + * + * Copyright (c) 2001-3 Patrick Mochel + * Copyright (c) 2007 SUSE Linux Products GmbH + * Copyright (c) 2007, 2013 Tejun Heo <tj@kernel.org> + * + * This file is released under the GPLv2. + */ + +#include <linux/fs.h> +#include <linux/seq_file.h> +#include <linux/slab.h> +#include <linux/poll.h> +#include <linux/pagemap.h> +#include <linux/sched.h> + +#include "kernfs-internal.h" + +/* + * There's one kernfs_open_file for each open file and one kernfs_open_node + * for each kernfs_node with one or more open files. + * + * kernfs_node->attr.open points to kernfs_open_node. attr.open is + * protected by kernfs_open_node_lock. + * + * filp->private_data points to seq_file whose ->private points to + * kernfs_open_file. kernfs_open_files are chained at + * kernfs_open_node->files, which is protected by kernfs_open_file_mutex. + */ +static DEFINE_SPINLOCK(kernfs_open_node_lock); +static DEFINE_MUTEX(kernfs_open_file_mutex); + +struct kernfs_open_node { + atomic_t refcnt; + atomic_t event; + wait_queue_head_t poll; + struct list_head files; /* goes through kernfs_open_file.list */ +}; + +static struct kernfs_open_file *kernfs_of(struct file *file) +{ + return ((struct seq_file *)file->private_data)->private; +} + +/* + * Determine the kernfs_ops for the given kernfs_node. This function must + * be called while holding an active reference. + */ +static const struct kernfs_ops *kernfs_ops(struct kernfs_node *kn) +{ + if (kn->flags & KERNFS_LOCKDEP) + lockdep_assert_held(kn); + return kn->attr.ops; +} + +/* + * As kernfs_seq_stop() is also called after kernfs_seq_start() or + * kernfs_seq_next() failure, it needs to distinguish whether it's stopping + * a seq_file iteration which is fully initialized with an active reference + * or an aborted kernfs_seq_start() due to get_active failure. The + * position pointer is the only context for each seq_file iteration and + * thus the stop condition should be encoded in it. As the return value is + * directly visible to userland, ERR_PTR(-ENODEV) is the only acceptable + * choice to indicate get_active failure. + * + * Unfortunately, this is complicated due to the optional custom seq_file + * operations which may return ERR_PTR(-ENODEV) too. kernfs_seq_stop() + * can't distinguish whether ERR_PTR(-ENODEV) is from get_active failure or + * custom seq_file operations and thus can't decide whether put_active + * should be performed or not only on ERR_PTR(-ENODEV). + * + * This is worked around by factoring out the custom seq_stop() and + * put_active part into kernfs_seq_stop_active(), skipping it from + * kernfs_seq_stop() if ERR_PTR(-ENODEV) while invoking it directly after + * custom seq_file operations fail with ERR_PTR(-ENODEV) - this ensures + * that kernfs_seq_stop_active() is skipped only after get_active failure. + */ +static void kernfs_seq_stop_active(struct seq_file *sf, void *v) +{ + struct kernfs_open_file *of = sf->private; + const struct kernfs_ops *ops = kernfs_ops(of->kn); + + if (ops->seq_stop) + ops->seq_stop(sf, v); + kernfs_put_active(of->kn); +} + +static void *kernfs_seq_start(struct seq_file *sf, loff_t *ppos) +{ + struct kernfs_open_file *of = sf->private; + const struct kernfs_ops *ops; + + /* + * @of->mutex nests outside active ref and is just to ensure that + * the ops aren't called concurrently for the same open file. + */ + mutex_lock(&of->mutex); + if (!kernfs_get_active(of->kn)) + return ERR_PTR(-ENODEV); + + ops = kernfs_ops(of->kn); + if (ops->seq_start) { + void *next = ops->seq_start(sf, ppos); + /* see the comment above kernfs_seq_stop_active() */ + if (next == ERR_PTR(-ENODEV)) + kernfs_seq_stop_active(sf, next); + return next; + } else { + /* + * The same behavior and code as single_open(). Returns + * !NULL if pos is at the beginning; otherwise, NULL. + */ + return NULL + !*ppos; + } +} + +static void *kernfs_seq_next(struct seq_file *sf, void *v, loff_t *ppos) +{ + struct kernfs_open_file *of = sf->private; + const struct kernfs_ops *ops = kernfs_ops(of->kn); + + if (ops->seq_next) { + void *next = ops->seq_next(sf, v, ppos); + /* see the comment above kernfs_seq_stop_active() */ + if (next == ERR_PTR(-ENODEV)) + kernfs_seq_stop_active(sf, next); + return next; + } else { + /* + * The same behavior and code as single_open(), always + * terminate after the initial read. + */ + ++*ppos; + return NULL; + } +} + +static void kernfs_seq_stop(struct seq_file *sf, void *v) +{ + struct kernfs_open_file *of = sf->private; + + if (v != ERR_PTR(-ENODEV)) + kernfs_seq_stop_active(sf, v); + mutex_unlock(&of->mutex); +} + +static int kernfs_seq_show(struct seq_file *sf, void *v) +{ + struct kernfs_open_file *of = sf->private; + + of->event = atomic_read(&of->kn->attr.open->event); + + return of->kn->attr.ops->seq_show(sf, v); +} + +static const struct seq_operations kernfs_seq_ops = { + .start = kernfs_seq_start, + .next = kernfs_seq_next, + .stop = kernfs_seq_stop, + .show = kernfs_seq_show, +}; + +/* + * As reading a bin file can have side-effects, the exact offset and bytes + * specified in read(2) call should be passed to the read callback making + * it difficult to use seq_file. Implement simplistic custom buffering for + * bin files. + */ +static ssize_t kernfs_file_direct_read(struct kernfs_open_file *of, + char __user *user_buf, size_t count, + loff_t *ppos) +{ + ssize_t len = min_t(size_t, count, PAGE_SIZE); + const struct kernfs_ops *ops; + char *buf; + + buf = kmalloc(len, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + /* + * @of->mutex nests outside active ref and is just to ensure that + * the ops aren't called concurrently for the same open file. + */ + mutex_lock(&of->mutex); + if (!kernfs_get_active(of->kn)) { + len = -ENODEV; + mutex_unlock(&of->mutex); + goto out_free; + } + + ops = kernfs_ops(of->kn); + if (ops->read) + len = ops->read(of, buf, len, *ppos); + else + len = -EINVAL; + + kernfs_put_active(of->kn); + mutex_unlock(&of->mutex); + + if (len < 0) + goto out_free; + + if (copy_to_user(user_buf, buf, len)) { + len = -EFAULT; + goto out_free; + } + + *ppos += len; + + out_free: + kfree(buf); + return len; +} + +/** + * kernfs_fop_read - kernfs vfs read callback + * @file: file pointer + * @user_buf: data to write + * @count: number of bytes + * @ppos: starting offset + */ +static ssize_t kernfs_fop_read(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct kernfs_open_file *of = kernfs_of(file); + + if (of->kn->flags & KERNFS_HAS_SEQ_SHOW) + return seq_read(file, user_buf, count, ppos); + else + return kernfs_file_direct_read(of, user_buf, count, ppos); +} + +/** + * kernfs_fop_write - kernfs vfs write callback + * @file: file pointer + * @user_buf: data to write + * @count: number of bytes + * @ppos: starting offset + * + * Copy data in from userland and pass it to the matching kernfs write + * operation. + * + * There is no easy way for us to know if userspace is only doing a partial + * write, so we don't support them. We expect the entire buffer to come on + * the first write. Hint: if you're writing a value, first read the file, + * modify only the the value you're changing, then write entire buffer + * back. + */ +static ssize_t kernfs_fop_write(struct file *file, const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct kernfs_open_file *of = kernfs_of(file); + const struct kernfs_ops *ops; + size_t len; + char *buf; + + if (of->atomic_write_len) { + len = count; + if (len > of->atomic_write_len) + return -E2BIG; + } else { + len = min_t(size_t, count, PAGE_SIZE); + } + + buf = kmalloc(len + 1, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + if (copy_from_user(buf, user_buf, len)) { + len = -EFAULT; + goto out_free; + } + buf[len] = '\0'; /* guarantee string termination */ + + /* + * @of->mutex nests outside active ref and is just to ensure that + * the ops aren't called concurrently for the same open file. + */ + mutex_lock(&of->mutex); + if (!kernfs_get_active(of->kn)) { + mutex_unlock(&of->mutex); + len = -ENODEV; + goto out_free; + } + + ops = kernfs_ops(of->kn); + if (ops->write) + len = ops->write(of, buf, len, *ppos); + else + len = -EINVAL; + + kernfs_put_active(of->kn); + mutex_unlock(&of->mutex); + + if (len > 0) + *ppos += len; +out_free: + kfree(buf); + return len; +} + +static void kernfs_vma_open(struct vm_area_struct *vma) +{ + struct file *file = vma->vm_file; + struct kernfs_open_file *of = kernfs_of(file); + + if (!of->vm_ops) + return; + + if (!kernfs_get_active(of->kn)) + return; + + if (of->vm_ops->open) + of->vm_ops->open(vma); + + kernfs_put_active(of->kn); +} + +static int kernfs_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf) +{ + struct file *file = vma->vm_file; + struct kernfs_open_file *of = kernfs_of(file); + int ret; + + if (!of->vm_ops) + return VM_FAULT_SIGBUS; + + if (!kernfs_get_active(of->kn)) + return VM_FAULT_SIGBUS; + + ret = VM_FAULT_SIGBUS; + if (of->vm_ops->fault) + ret = of->vm_ops->fault(vma, vmf); + + kernfs_put_active(of->kn); + return ret; +} + +static int kernfs_vma_page_mkwrite(struct vm_area_struct *vma, + struct vm_fault *vmf) +{ + struct file *file = vma->vm_file; + struct kernfs_open_file *of = kernfs_of(file); + int ret; + + if (!of->vm_ops) + return VM_FAULT_SIGBUS; + + if (!kernfs_get_active(of->kn)) + return VM_FAULT_SIGBUS; + + ret = 0; + if (of->vm_ops->page_mkwrite) + ret = of->vm_ops->page_mkwrite(vma, vmf); + else + file_update_time(file); + + kernfs_put_active(of->kn); + return ret; +} + +static int kernfs_vma_access(struct vm_area_struct *vma, unsigned long addr, + void *buf, int len, int write) +{ + struct file *file = vma->vm_file; + struct kernfs_open_file *of = kernfs_of(file); + int ret; + + if (!of->vm_ops) + return -EINVAL; + + if (!kernfs_get_active(of->kn)) + return -EINVAL; + + ret = -EINVAL; + if (of->vm_ops->access) + ret = of->vm_ops->access(vma, addr, buf, len, write); + + kernfs_put_active(of->kn); + return ret; +} + +#ifdef CONFIG_NUMA +static int kernfs_vma_set_policy(struct vm_area_struct *vma, + struct mempolicy *new) +{ + struct file *file = vma->vm_file; + struct kernfs_open_file *of = kernfs_of(file); + int ret; + + if (!of->vm_ops) + return 0; + + if (!kernfs_get_active(of->kn)) + return -EINVAL; + + ret = 0; + if (of->vm_ops->set_policy) + ret = of->vm_ops->set_policy(vma, new); + + kernfs_put_active(of->kn); + return ret; +} + +static struct mempolicy *kernfs_vma_get_policy(struct vm_area_struct *vma, + unsigned long addr) +{ + struct file *file = vma->vm_file; + struct kernfs_open_file *of = kernfs_of(file); + struct mempolicy *pol; + + if (!of->vm_ops) + return vma->vm_policy; + + if (!kernfs_get_active(of->kn)) + return vma->vm_policy; + + pol = vma->vm_policy; + if (of->vm_ops->get_policy) + pol = of->vm_ops->get_policy(vma, addr); + + kernfs_put_active(of->kn); + return pol; +} + +static int kernfs_vma_migrate(struct vm_area_struct *vma, + const nodemask_t *from, const nodemask_t *to, + unsigned long flags) +{ + struct file *file = vma->vm_file; + struct kernfs_open_file *of = kernfs_of(file); + int ret; + + if (!of->vm_ops) + return 0; + + if (!kernfs_get_active(of->kn)) + return 0; + + ret = 0; + if (of->vm_ops->migrate) + ret = of->vm_ops->migrate(vma, from, to, flags); + + kernfs_put_active(of->kn); + return ret; +} +#endif + +static const struct vm_operations_struct kernfs_vm_ops = { + .open = kernfs_vma_open, + .fault = kernfs_vma_fault, + .page_mkwrite = kernfs_vma_page_mkwrite, + .access = kernfs_vma_access, +#ifdef CONFIG_NUMA + .set_policy = kernfs_vma_set_policy, + .get_policy = kernfs_vma_get_policy, + .migrate = kernfs_vma_migrate, +#endif +}; + +static int kernfs_fop_mmap(struct file *file, struct vm_area_struct *vma) +{ + struct kernfs_open_file *of = kernfs_of(file); + const struct kernfs_ops *ops; + int rc; + + /* + * mmap path and of->mutex are prone to triggering spurious lockdep + * warnings and we don't want to add spurious locking dependency + * between the two. Check whether mmap is actually implemented + * without grabbing @of->mutex by testing HAS_MMAP flag. See the + * comment in kernfs_file_open() for more details. + */ + if (!(of->kn->flags & KERNFS_HAS_MMAP)) + return -ENODEV; + + mutex_lock(&of->mutex); + + rc = -ENODEV; + if (!kernfs_get_active(of->kn)) + goto out_unlock; + + ops = kernfs_ops(of->kn); + rc = ops->mmap(of, vma); + + /* + * PowerPC's pci_mmap of legacy_mem uses shmem_zero_setup() + * to satisfy versions of X which crash if the mmap fails: that + * substitutes a new vm_file, and we don't then want bin_vm_ops. + */ + if (vma->vm_file != file) + goto out_put; + + rc = -EINVAL; + if (of->mmapped && of->vm_ops != vma->vm_ops) + goto out_put; + + /* + * It is not possible to successfully wrap close. + * So error if someone is trying to use close. + */ + rc = -EINVAL; + if (vma->vm_ops && vma->vm_ops->close) + goto out_put; + + rc = 0; + of->mmapped = 1; + of->vm_ops = vma->vm_ops; + vma->vm_ops = &kernfs_vm_ops; +out_put: + kernfs_put_active(of->kn); +out_unlock: + mutex_unlock(&of->mutex); + + return rc; +} + +/** + * kernfs_get_open_node - get or create kernfs_open_node + * @kn: target kernfs_node + * @of: kernfs_open_file for this instance of open + * + * If @kn->attr.open exists, increment its reference count; otherwise, + * create one. @of is chained to the files list. + * + * LOCKING: + * Kernel thread context (may sleep). + * + * RETURNS: + * 0 on success, -errno on failure. + */ +static int kernfs_get_open_node(struct kernfs_node *kn, + struct kernfs_open_file *of) +{ + struct kernfs_open_node *on, *new_on = NULL; + + retry: + mutex_lock(&kernfs_open_file_mutex); + spin_lock_irq(&kernfs_open_node_lock); + + if (!kn->attr.open && new_on) { + kn->attr.open = new_on; + new_on = NULL; + } + + on = kn->attr.open; + if (on) { + atomic_inc(&on->refcnt); + list_add_tail(&of->list, &on->files); + } + + spin_unlock_irq(&kernfs_open_node_lock); + mutex_unlock(&kernfs_open_file_mutex); + + if (on) { + kfree(new_on); + return 0; + } + + /* not there, initialize a new one and retry */ + new_on = kmalloc(sizeof(*new_on), GFP_KERNEL); + if (!new_on) + return -ENOMEM; + + atomic_set(&new_on->refcnt, 0); + atomic_set(&new_on->event, 1); + init_waitqueue_head(&new_on->poll); + INIT_LIST_HEAD(&new_on->files); + goto retry; +} + +/** + * kernfs_put_open_node - put kernfs_open_node + * @kn: target kernfs_nodet + * @of: associated kernfs_open_file + * + * Put @kn->attr.open and unlink @of from the files list. If + * reference count reaches zero, disassociate and free it. + * + * LOCKING: + * None. + */ +static void kernfs_put_open_node(struct kernfs_node *kn, + struct kernfs_open_file *of) +{ + struct kernfs_open_node *on = kn->attr.open; + unsigned long flags; + + mutex_lock(&kernfs_open_file_mutex); + spin_lock_irqsave(&kernfs_open_node_lock, flags); + + if (of) + list_del(&of->list); + + if (atomic_dec_and_test(&on->refcnt)) + kn->attr.open = NULL; + else + on = NULL; + + spin_unlock_irqrestore(&kernfs_open_node_lock, flags); + mutex_unlock(&kernfs_open_file_mutex); + + kfree(on); +} + +static int kernfs_fop_open(struct inode *inode, struct file *file) +{ + struct kernfs_node *kn = file->f_path.dentry->d_fsdata; + const struct kernfs_ops *ops; + struct kernfs_open_file *of; + bool has_read, has_write, has_mmap; + int error = -EACCES; + + if (!kernfs_get_active(kn)) + return -ENODEV; + + ops = kernfs_ops(kn); + + has_read = ops->seq_show || ops->read || ops->mmap; + has_write = ops->write || ops->mmap; + has_mmap = ops->mmap; + + /* check perms and supported operations */ + if ((file->f_mode & FMODE_WRITE) && + (!(inode->i_mode & S_IWUGO) || !has_write)) + goto err_out; + + if ((file->f_mode & FMODE_READ) && + (!(inode->i_mode & S_IRUGO) || !has_read)) + goto err_out; + + /* allocate a kernfs_open_file for the file */ + error = -ENOMEM; + of = kzalloc(sizeof(struct kernfs_open_file), GFP_KERNEL); + if (!of) + goto err_out; + + /* + * The following is done to give a different lockdep key to + * @of->mutex for files which implement mmap. This is a rather + * crude way to avoid false positive lockdep warning around + * mm->mmap_sem - mmap nests @of->mutex under mm->mmap_sem and + * reading /sys/block/sda/trace/act_mask grabs sr_mutex, under + * which mm->mmap_sem nests, while holding @of->mutex. As each + * open file has a separate mutex, it's okay as long as those don't + * happen on the same file. At this point, we can't easily give + * each file a separate locking class. Let's differentiate on + * whether the file has mmap or not for now. + * + * Both paths of the branch look the same. They're supposed to + * look that way and give @of->mutex different static lockdep keys. + */ + if (has_mmap) + mutex_init(&of->mutex); + else + mutex_init(&of->mutex); + + of->kn = kn; + of->file = file; + + /* + * Write path needs to atomic_write_len outside active reference. + * Cache it in open_file. See kernfs_fop_write() for details. + */ + of->atomic_write_len = ops->atomic_write_len; + + /* + * Always instantiate seq_file even if read access doesn't use + * seq_file or is not requested. This unifies private data access + * and readable regular files are the vast majority anyway. + */ + if (ops->seq_show) + error = seq_open(file, &kernfs_seq_ops); + else + error = seq_open(file, NULL); + if (error) + goto err_free; + + ((struct seq_file *)file->private_data)->private = of; + + /* seq_file clears PWRITE unconditionally, restore it if WRITE */ + if (file->f_mode & FMODE_WRITE) + file->f_mode |= FMODE_PWRITE; + + /* make sure we have open node struct */ + error = kernfs_get_open_node(kn, of); + if (error) + goto err_close; + + /* open succeeded, put active references */ + kernfs_put_active(kn); + return 0; + +err_close: + seq_release(inode, file); +err_free: + kfree(of); +err_out: + kernfs_put_active(kn); + return error; +} + +static int kernfs_fop_release(struct inode *inode, struct file *filp) +{ + struct kernfs_node *kn = filp->f_path.dentry->d_fsdata; + struct kernfs_open_file *of = kernfs_of(filp); + + kernfs_put_open_node(kn, of); + seq_release(inode, filp); + kfree(of); + + return 0; +} + +void kernfs_unmap_bin_file(struct kernfs_node *kn) +{ + struct kernfs_open_node *on; + struct kernfs_open_file *of; + + if (!(kn->flags & KERNFS_HAS_MMAP)) + return; + + spin_lock_irq(&kernfs_open_node_lock); + on = kn->attr.open; + if (on) + atomic_inc(&on->refcnt); + spin_unlock_irq(&kernfs_open_node_lock); + if (!on) + return; + + mutex_lock(&kernfs_open_file_mutex); + list_for_each_entry(of, &on->files, list) { + struct inode *inode = file_inode(of->file); + unmap_mapping_range(inode->i_mapping, 0, 0, 1); + } + mutex_unlock(&kernfs_open_file_mutex); + + kernfs_put_open_node(kn, NULL); +} + +/* + * Kernfs attribute files are pollable. The idea is that you read + * the content and then you use 'poll' or 'select' to wait for + * the content to change. When the content changes (assuming the + * manager for the kobject supports notification), poll will + * return POLLERR|POLLPRI, and select will return the fd whether + * it is waiting for read, write, or exceptions. + * Once poll/select indicates that the value has changed, you + * need to close and re-open the file, or seek to 0 and read again. + * Reminder: this only works for attributes which actively support + * it, and it is not possible to test an attribute from userspace + * to see if it supports poll (Neither 'poll' nor 'select' return + * an appropriate error code). When in doubt, set a suitable timeout value. + */ +static unsigned int kernfs_fop_poll(struct file *filp, poll_table *wait) +{ + struct kernfs_open_file *of = kernfs_of(filp); + struct kernfs_node *kn = filp->f_path.dentry->d_fsdata; + struct kernfs_open_node *on = kn->attr.open; + + /* need parent for the kobj, grab both */ + if (!kernfs_get_active(kn)) + goto trigger; + + poll_wait(filp, &on->poll, wait); + + kernfs_put_active(kn); + + if (of->event != atomic_read(&on->event)) + goto trigger; + + return DEFAULT_POLLMASK; + + trigger: + return DEFAULT_POLLMASK|POLLERR|POLLPRI; +} + +/** + * kernfs_notify - notify a kernfs file + * @kn: file to notify + * + * Notify @kn such that poll(2) on @kn wakes up. + */ +void kernfs_notify(struct kernfs_node *kn) +{ + struct kernfs_open_node *on; + unsigned long flags; + + spin_lock_irqsave(&kernfs_open_node_lock, flags); + + if (!WARN_ON(kernfs_type(kn) != KERNFS_FILE)) { + on = kn->attr.open; + if (on) { + atomic_inc(&on->event); + wake_up_interruptible(&on->poll); + } + } + + spin_unlock_irqrestore(&kernfs_open_node_lock, flags); +} +EXPORT_SYMBOL_GPL(kernfs_notify); + +const struct file_operations kernfs_file_fops = { + .read = kernfs_fop_read, + .write = kernfs_fop_write, + .llseek = generic_file_llseek, + .mmap = kernfs_fop_mmap, + .open = kernfs_fop_open, + .release = kernfs_fop_release, + .poll = kernfs_fop_poll, +}; + +/** + * __kernfs_create_file - kernfs internal function to create a file + * @parent: directory to create the file in + * @name: name of the file + * @mode: mode of the file + * @size: size of the file + * @ops: kernfs operations for the file + * @priv: private data for the file + * @ns: optional namespace tag of the file + * @static_name: don't copy file name + * @key: lockdep key for the file's active_ref, %NULL to disable lockdep + * + * Returns the created node on success, ERR_PTR() value on error. + */ +struct kernfs_node *__kernfs_create_file(struct kernfs_node *parent, + const char *name, + umode_t mode, loff_t size, + const struct kernfs_ops *ops, + void *priv, const void *ns, + bool name_is_static, + struct lock_class_key *key) +{ + struct kernfs_node *kn; + unsigned flags; + int rc; + + flags = KERNFS_FILE; + if (name_is_static) + flags |= KERNFS_STATIC_NAME; + + kn = kernfs_new_node(parent, name, (mode & S_IALLUGO) | S_IFREG, flags); + if (!kn) + return ERR_PTR(-ENOMEM); + + kn->attr.ops = ops; + kn->attr.size = size; + kn->ns = ns; + kn->priv = priv; + +#ifdef CONFIG_DEBUG_LOCK_ALLOC + if (key) { + lockdep_init_map(&kn->dep_map, "s_active", key, 0); + kn->flags |= KERNFS_LOCKDEP; + } +#endif + + /* + * kn->attr.ops is accesible only while holding active ref. We + * need to know whether some ops are implemented outside active + * ref. Cache their existence in flags. + */ + if (ops->seq_show) + kn->flags |= KERNFS_HAS_SEQ_SHOW; + if (ops->mmap) + kn->flags |= KERNFS_HAS_MMAP; + + rc = kernfs_add_one(kn); + if (rc) { + kernfs_put(kn); + return ERR_PTR(rc); + } + return kn; +} diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c new file mode 100644 index 000000000000..abb0f1f53d93 --- /dev/null +++ b/fs/kernfs/inode.c @@ -0,0 +1,377 @@ +/* + * fs/kernfs/inode.c - kernfs inode implementation + * + * Copyright (c) 2001-3 Patrick Mochel + * Copyright (c) 2007 SUSE Linux Products GmbH + * Copyright (c) 2007, 2013 Tejun Heo <tj@kernel.org> + * + * This file is released under the GPLv2. + */ + +#include <linux/pagemap.h> +#include <linux/backing-dev.h> +#include <linux/capability.h> +#include <linux/errno.h> +#include <linux/slab.h> +#include <linux/xattr.h> +#include <linux/security.h> + +#include "kernfs-internal.h" + +static const struct address_space_operations kernfs_aops = { + .readpage = simple_readpage, + .write_begin = simple_write_begin, + .write_end = simple_write_end, +}; + +static struct backing_dev_info kernfs_bdi = { + .name = "kernfs", + .ra_pages = 0, /* No readahead */ + .capabilities = BDI_CAP_NO_ACCT_AND_WRITEBACK, +}; + +static const struct inode_operations kernfs_iops = { + .permission = kernfs_iop_permission, + .setattr = kernfs_iop_setattr, + .getattr = kernfs_iop_getattr, + .setxattr = kernfs_iop_setxattr, + .removexattr = kernfs_iop_removexattr, + .getxattr = kernfs_iop_getxattr, + .listxattr = kernfs_iop_listxattr, +}; + +void __init kernfs_inode_init(void) +{ + if (bdi_init(&kernfs_bdi)) + panic("failed to init kernfs_bdi"); +} + +static struct kernfs_iattrs *kernfs_iattrs(struct kernfs_node *kn) +{ + struct iattr *iattrs; + + if (kn->iattr) + return kn->iattr; + + kn->iattr = kzalloc(sizeof(struct kernfs_iattrs), GFP_KERNEL); + if (!kn->iattr) + return NULL; + iattrs = &kn->iattr->ia_iattr; + + /* assign default attributes */ + iattrs->ia_mode = kn->mode; + iattrs->ia_uid = GLOBAL_ROOT_UID; + iattrs->ia_gid = GLOBAL_ROOT_GID; + iattrs->ia_atime = iattrs->ia_mtime = iattrs->ia_ctime = CURRENT_TIME; + + simple_xattrs_init(&kn->iattr->xattrs); + + return kn->iattr; +} + +static int __kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr) +{ + struct kernfs_iattrs *attrs; + struct iattr *iattrs; + unsigned int ia_valid = iattr->ia_valid; + + attrs = kernfs_iattrs(kn); + if (!attrs) + return -ENOMEM; + + iattrs = &attrs->ia_iattr; + + if (ia_valid & ATTR_UID) + iattrs->ia_uid = iattr->ia_uid; + if (ia_valid & ATTR_GID) + iattrs->ia_gid = iattr->ia_gid; + if (ia_valid & ATTR_ATIME) + iattrs->ia_atime = iattr->ia_atime; + if (ia_valid & ATTR_MTIME) + iattrs->ia_mtime = iattr->ia_mtime; + if (ia_valid & ATTR_CTIME) + iattrs->ia_ctime = iattr->ia_ctime; + if (ia_valid & ATTR_MODE) { + umode_t mode = iattr->ia_mode; + iattrs->ia_mode = kn->mode = mode; + } + return 0; +} + +/** + * kernfs_setattr - set iattr on a node + * @kn: target node + * @iattr: iattr to set + * + * Returns 0 on success, -errno on failure. + */ +int kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr) +{ + int ret; + + mutex_lock(&kernfs_mutex); + ret = __kernfs_setattr(kn, iattr); + mutex_unlock(&kernfs_mutex); + return ret; +} + +int kernfs_iop_setattr(struct dentry *dentry, struct iattr *iattr) +{ + struct inode *inode = dentry->d_inode; + struct kernfs_node *kn = dentry->d_fsdata; + int error; + + if (!kn) + return -EINVAL; + + mutex_lock(&kernfs_mutex); + error = inode_change_ok(inode, iattr); + if (error) + goto out; + + error = __kernfs_setattr(kn, iattr); + if (error) + goto out; + + /* this ignores size changes */ + setattr_copy(inode, iattr); + +out: + mutex_unlock(&kernfs_mutex); + return error; +} + +static int kernfs_node_setsecdata(struct kernfs_node *kn, void **secdata, + u32 *secdata_len) +{ + struct kernfs_iattrs *attrs; + void *old_secdata; + size_t old_secdata_len; + + attrs = kernfs_iattrs(kn); + if (!attrs) + return -ENOMEM; + + old_secdata = attrs->ia_secdata; + old_secdata_len = attrs->ia_secdata_len; + + attrs->ia_secdata = *secdata; + attrs->ia_secdata_len = *secdata_len; + + *secdata = old_secdata; + *secdata_len = old_secdata_len; + return 0; +} + +int kernfs_iop_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags) +{ + struct kernfs_node *kn = dentry->d_fsdata; + struct kernfs_iattrs *attrs; + void *secdata; + int error; + u32 secdata_len = 0; + + attrs = kernfs_iattrs(kn); + if (!attrs) + return -ENOMEM; + + if (!strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN)) { + const char *suffix = name + XATTR_SECURITY_PREFIX_LEN; + error = security_inode_setsecurity(dentry->d_inode, suffix, + value, size, flags); + if (error) + return error; + error = security_inode_getsecctx(dentry->d_inode, + &secdata, &secdata_len); + if (error) + return error; + + mutex_lock(&kernfs_mutex); + error = kernfs_node_setsecdata(kn, &secdata, &secdata_len); + mutex_unlock(&kernfs_mutex); + + if (secdata) + security_release_secctx(secdata, secdata_len); + return error; + } else if (!strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN)) { + return simple_xattr_set(&attrs->xattrs, name, value, size, + flags); + } + + return -EINVAL; +} + +int kernfs_iop_removexattr(struct dentry *dentry, const char *name) +{ + struct kernfs_node *kn = dentry->d_fsdata; + struct kernfs_iattrs *attrs; + + attrs = kernfs_iattrs(kn); + if (!attrs) + return -ENOMEM; + + return simple_xattr_remove(&attrs->xattrs, name); +} + +ssize_t kernfs_iop_getxattr(struct dentry *dentry, const char *name, void *buf, + size_t size) +{ + struct kernfs_node *kn = dentry->d_fsdata; + struct kernfs_iattrs *attrs; + + attrs = kernfs_iattrs(kn); + if (!attrs) + return -ENOMEM; + + return simple_xattr_get(&attrs->xattrs, name, buf, size); +} + +ssize_t kernfs_iop_listxattr(struct dentry *dentry, char *buf, size_t size) +{ + struct kernfs_node *kn = dentry->d_fsdata; + struct kernfs_iattrs *attrs; + + attrs = kernfs_iattrs(kn); + if (!attrs) + return -ENOMEM; + + return simple_xattr_list(&attrs->xattrs, buf, size); +} + +static inline void set_default_inode_attr(struct inode *inode, umode_t mode) +{ + inode->i_mode = mode; + inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; +} + +static inline void set_inode_attr(struct inode *inode, struct iattr *iattr) +{ + inode->i_uid = iattr->ia_uid; + inode->i_gid = iattr->ia_gid; + inode->i_atime = iattr->ia_atime; + inode->i_mtime = iattr->ia_mtime; + inode->i_ctime = iattr->ia_ctime; +} + +static void kernfs_refresh_inode(struct kernfs_node *kn, struct inode *inode) +{ + struct kernfs_iattrs *attrs = kn->iattr; + + inode->i_mode = kn->mode; + if (attrs) { + /* + * kernfs_node has non-default attributes get them from + * persistent copy in kernfs_node. + */ + set_inode_attr(inode, &attrs->ia_iattr); + security_inode_notifysecctx(inode, attrs->ia_secdata, + attrs->ia_secdata_len); + } + + if (kernfs_type(kn) == KERNFS_DIR) + set_nlink(inode, kn->dir.subdirs + 2); +} + +int kernfs_iop_getattr(struct vfsmount *mnt, struct dentry *dentry, + struct kstat *stat) +{ + struct kernfs_node *kn = dentry->d_fsdata; + struct inode *inode = dentry->d_inode; + + mutex_lock(&kernfs_mutex); + kernfs_refresh_inode(kn, inode); + mutex_unlock(&kernfs_mutex); + + generic_fillattr(inode, stat); + return 0; +} + +static void kernfs_init_inode(struct kernfs_node *kn, struct inode *inode) +{ + kernfs_get(kn); + inode->i_private = kn; + inode->i_mapping->a_ops = &kernfs_aops; + inode->i_mapping->backing_dev_info = &kernfs_bdi; + inode->i_op = &kernfs_iops; + + set_default_inode_attr(inode, kn->mode); + kernfs_refresh_inode(kn, inode); + + /* initialize inode according to type */ + switch (kernfs_type(kn)) { + case KERNFS_DIR: + inode->i_op = &kernfs_dir_iops; + inode->i_fop = &kernfs_dir_fops; + break; + case KERNFS_FILE: + inode->i_size = kn->attr.size; + inode->i_fop = &kernfs_file_fops; + break; + case KERNFS_LINK: + inode->i_op = &kernfs_symlink_iops; + break; + default: + BUG(); + } + + unlock_new_inode(inode); +} + +/** + * kernfs_get_inode - get inode for kernfs_node + * @sb: super block + * @kn: kernfs_node to allocate inode for + * + * Get inode for @kn. If such inode doesn't exist, a new inode is + * allocated and basics are initialized. New inode is returned + * locked. + * + * LOCKING: + * Kernel thread context (may sleep). + * + * RETURNS: + * Pointer to allocated inode on success, NULL on failure. + */ +struct inode *kernfs_get_inode(struct super_block *sb, struct kernfs_node *kn) +{ + struct inode *inode; + + inode = iget_locked(sb, kn->ino); + if (inode && (inode->i_state & I_NEW)) + kernfs_init_inode(kn, inode); + + return inode; +} + +/* + * The kernfs_node serves as both an inode and a directory entry for + * kernfs. To prevent the kernfs inode numbers from being freed + * prematurely we take a reference to kernfs_node from the kernfs inode. A + * super_operations.evict_inode() implementation is needed to drop that + * reference upon inode destruction. + */ +void kernfs_evict_inode(struct inode *inode) +{ + struct kernfs_node *kn = inode->i_private; + + truncate_inode_pages_final(&inode->i_data); + clear_inode(inode); + kernfs_put(kn); +} + +int kernfs_iop_permission(struct inode *inode, int mask) +{ + struct kernfs_node *kn; + + if (mask & MAY_NOT_BLOCK) + return -ECHILD; + + kn = inode->i_private; + + mutex_lock(&kernfs_mutex); + kernfs_refresh_inode(kn, inode); + mutex_unlock(&kernfs_mutex); + + return generic_permission(inode, mask); +} diff --git a/fs/kernfs/kernfs-internal.h b/fs/kernfs/kernfs-internal.h new file mode 100644 index 000000000000..8be13b2a079b --- /dev/null +++ b/fs/kernfs/kernfs-internal.h @@ -0,0 +1,115 @@ +/* + * fs/kernfs/kernfs-internal.h - kernfs internal header file + * + * Copyright (c) 2001-3 Patrick Mochel + * Copyright (c) 2007 SUSE Linux Products GmbH + * Copyright (c) 2007, 2013 Tejun Heo <teheo@suse.de> + * + * This file is released under the GPLv2. + */ + +#ifndef __KERNFS_INTERNAL_H +#define __KERNFS_INTERNAL_H + +#include <linux/lockdep.h> +#include <linux/fs.h> +#include <linux/mutex.h> +#include <linux/xattr.h> + +#include <linux/kernfs.h> + +struct kernfs_iattrs { + struct iattr ia_iattr; + void *ia_secdata; + u32 ia_secdata_len; + + struct simple_xattrs xattrs; +}; + +/* +1 to avoid triggering overflow warning when negating it */ +#define KN_DEACTIVATED_BIAS (INT_MIN + 1) + +/* KERNFS_TYPE_MASK and types are defined in include/linux/kernfs.h */ + +/** + * kernfs_root - find out the kernfs_root a kernfs_node belongs to + * @kn: kernfs_node of interest + * + * Return the kernfs_root @kn belongs to. + */ +static inline struct kernfs_root *kernfs_root(struct kernfs_node *kn) +{ + /* if parent exists, it's always a dir; otherwise, @sd is a dir */ + if (kn->parent) + kn = kn->parent; + return kn->dir.root; +} + +/* + * mount.c + */ +struct kernfs_super_info { + /* + * The root associated with this super_block. Each super_block is + * identified by the root and ns it's associated with. + */ + struct kernfs_root *root; + + /* + * Each sb is associated with one namespace tag, currently the + * network namespace of the task which mounted this kernfs + * instance. If multiple tags become necessary, make the following + * an array and compare kernfs_node tag against every entry. + */ + const void *ns; +}; +#define kernfs_info(SB) ((struct kernfs_super_info *)(SB->s_fs_info)) + +extern const struct super_operations kernfs_sops; +extern struct kmem_cache *kernfs_node_cache; + +/* + * inode.c + */ +struct inode *kernfs_get_inode(struct super_block *sb, struct kernfs_node *kn); +void kernfs_evict_inode(struct inode *inode); +int kernfs_iop_permission(struct inode *inode, int mask); +int kernfs_iop_setattr(struct dentry *dentry, struct iattr *iattr); +int kernfs_iop_getattr(struct vfsmount *mnt, struct dentry *dentry, + struct kstat *stat); +int kernfs_iop_setxattr(struct dentry *dentry, const char *name, const void *value, + size_t size, int flags); +int kernfs_iop_removexattr(struct dentry *dentry, const char *name); +ssize_t kernfs_iop_getxattr(struct dentry *dentry, const char *name, void *buf, + size_t size); +ssize_t kernfs_iop_listxattr(struct dentry *dentry, char *buf, size_t size); +void kernfs_inode_init(void); + +/* + * dir.c + */ +extern struct mutex kernfs_mutex; +extern const struct dentry_operations kernfs_dops; +extern const struct file_operations kernfs_dir_fops; +extern const struct inode_operations kernfs_dir_iops; + +struct kernfs_node *kernfs_get_active(struct kernfs_node *kn); +void kernfs_put_active(struct kernfs_node *kn); +int kernfs_add_one(struct kernfs_node *kn); +struct kernfs_node *kernfs_new_node(struct kernfs_node *parent, + const char *name, umode_t mode, + unsigned flags); + +/* + * file.c + */ +extern const struct file_operations kernfs_file_fops; + +void kernfs_unmap_bin_file(struct kernfs_node *kn); + +/* + * symlink.c + */ +extern const struct inode_operations kernfs_symlink_iops; + +#endif /* __KERNFS_INTERNAL_H */ diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c new file mode 100644 index 000000000000..6a5f04ac8704 --- /dev/null +++ b/fs/kernfs/mount.c @@ -0,0 +1,208 @@ +/* + * fs/kernfs/mount.c - kernfs mount implementation + * + * Copyright (c) 2001-3 Patrick Mochel + * Copyright (c) 2007 SUSE Linux Products GmbH + * Copyright (c) 2007, 2013 Tejun Heo <tj@kernel.org> + * + * This file is released under the GPLv2. + */ + +#include <linux/fs.h> +#include <linux/mount.h> +#include <linux/init.h> +#include <linux/magic.h> +#include <linux/slab.h> +#include <linux/pagemap.h> + +#include "kernfs-internal.h" + +struct kmem_cache *kernfs_node_cache; + +static int kernfs_sop_remount_fs(struct super_block *sb, int *flags, char *data) +{ + struct kernfs_root *root = kernfs_info(sb)->root; + struct kernfs_syscall_ops *scops = root->syscall_ops; + + if (scops && scops->remount_fs) + return scops->remount_fs(root, flags, data); + return 0; +} + +static int kernfs_sop_show_options(struct seq_file *sf, struct dentry *dentry) +{ + struct kernfs_root *root = kernfs_root(dentry->d_fsdata); + struct kernfs_syscall_ops *scops = root->syscall_ops; + + if (scops && scops->show_options) + return scops->show_options(sf, root); + return 0; +} + +const struct super_operations kernfs_sops = { + .statfs = simple_statfs, + .drop_inode = generic_delete_inode, + .evict_inode = kernfs_evict_inode, + + .remount_fs = kernfs_sop_remount_fs, + .show_options = kernfs_sop_show_options, +}; + +/** + * kernfs_root_from_sb - determine kernfs_root associated with a super_block + * @sb: the super_block in question + * + * Return the kernfs_root associated with @sb. If @sb is not a kernfs one, + * %NULL is returned. + */ +struct kernfs_root *kernfs_root_from_sb(struct super_block *sb) +{ + if (sb->s_op == &kernfs_sops) + return kernfs_info(sb)->root; + return NULL; +} + +static int kernfs_fill_super(struct super_block *sb) +{ + struct kernfs_super_info *info = kernfs_info(sb); + struct inode *inode; + struct dentry *root; + + sb->s_blocksize = PAGE_CACHE_SIZE; + sb->s_blocksize_bits = PAGE_CACHE_SHIFT; + sb->s_magic = SYSFS_MAGIC; + sb->s_op = &kernfs_sops; + sb->s_time_gran = 1; + + /* get root inode, initialize and unlock it */ + mutex_lock(&kernfs_mutex); + inode = kernfs_get_inode(sb, info->root->kn); + mutex_unlock(&kernfs_mutex); + if (!inode) { + pr_debug("kernfs: could not get root inode\n"); + return -ENOMEM; + } + + /* instantiate and link root dentry */ + root = d_make_root(inode); + if (!root) { + pr_debug("%s: could not get root dentry!\n", __func__); + return -ENOMEM; + } + kernfs_get(info->root->kn); + root->d_fsdata = info->root->kn; + sb->s_root = root; + sb->s_d_op = &kernfs_dops; + return 0; +} + +static int kernfs_test_super(struct super_block *sb, void *data) +{ + struct kernfs_super_info *sb_info = kernfs_info(sb); + struct kernfs_super_info *info = data; + + return sb_info->root == info->root && sb_info->ns == info->ns; +} + +static int kernfs_set_super(struct super_block *sb, void *data) +{ + int error; + error = set_anon_super(sb, data); + if (!error) + sb->s_fs_info = data; + return error; +} + +/** + * kernfs_super_ns - determine the namespace tag of a kernfs super_block + * @sb: super_block of interest + * + * Return the namespace tag associated with kernfs super_block @sb. + */ +const void *kernfs_super_ns(struct super_block *sb) +{ + struct kernfs_super_info *info = kernfs_info(sb); + + return info->ns; +} + +/** + * kernfs_mount_ns - kernfs mount helper + * @fs_type: file_system_type of the fs being mounted + * @flags: mount flags specified for the mount + * @root: kernfs_root of the hierarchy being mounted + * @new_sb_created: tell the caller if we allocated a new superblock + * @ns: optional namespace tag of the mount + * + * This is to be called from each kernfs user's file_system_type->mount() + * implementation, which should pass through the specified @fs_type and + * @flags, and specify the hierarchy and namespace tag to mount via @root + * and @ns, respectively. + * + * The return value can be passed to the vfs layer verbatim. + */ +struct dentry *kernfs_mount_ns(struct file_system_type *fs_type, int flags, + struct kernfs_root *root, bool *new_sb_created, + const void *ns) +{ + struct super_block *sb; + struct kernfs_super_info *info; + int error; + + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (!info) + return ERR_PTR(-ENOMEM); + + info->root = root; + info->ns = ns; + + sb = sget(fs_type, kernfs_test_super, kernfs_set_super, flags, info); + if (IS_ERR(sb) || sb->s_fs_info != info) + kfree(info); + if (IS_ERR(sb)) + return ERR_CAST(sb); + + if (new_sb_created) + *new_sb_created = !sb->s_root; + + if (!sb->s_root) { + error = kernfs_fill_super(sb); + if (error) { + deactivate_locked_super(sb); + return ERR_PTR(error); + } + sb->s_flags |= MS_ACTIVE; + } + + return dget(sb->s_root); +} + +/** + * kernfs_kill_sb - kill_sb for kernfs + * @sb: super_block being killed + * + * This can be used directly for file_system_type->kill_sb(). If a kernfs + * user needs extra cleanup, it can implement its own kill_sb() and call + * this function at the end. + */ +void kernfs_kill_sb(struct super_block *sb) +{ + struct kernfs_super_info *info = kernfs_info(sb); + struct kernfs_node *root_kn = sb->s_root->d_fsdata; + + /* + * Remove the superblock from fs_supers/s_instances + * so we can't find it, before freeing kernfs_super_info. + */ + kill_anon_super(sb); + kfree(info); + kernfs_put(root_kn); +} + +void __init kernfs_init(void) +{ + kernfs_node_cache = kmem_cache_create("kernfs_node_cache", + sizeof(struct kernfs_node), + 0, SLAB_PANIC, NULL); + kernfs_inode_init(); +} diff --git a/fs/kernfs/symlink.c b/fs/kernfs/symlink.c new file mode 100644 index 000000000000..8a198898e39a --- /dev/null +++ b/fs/kernfs/symlink.c @@ -0,0 +1,147 @@ +/* + * fs/kernfs/symlink.c - kernfs symlink implementation + * + * Copyright (c) 2001-3 Patrick Mochel + * Copyright (c) 2007 SUSE Linux Products GmbH + * Copyright (c) 2007, 2013 Tejun Heo <tj@kernel.org> + * + * This file is released under the GPLv2. + */ + +#include <linux/fs.h> +#include <linux/gfp.h> +#include <linux/namei.h> + +#include "kernfs-internal.h" + +/** + * kernfs_create_link - create a symlink + * @parent: directory to create the symlink in + * @name: name of the symlink + * @target: target node for the symlink to point to + * + * Returns the created node on success, ERR_PTR() value on error. + */ +struct kernfs_node *kernfs_create_link(struct kernfs_node *parent, + const char *name, + struct kernfs_node *target) +{ + struct kernfs_node *kn; + int error; + + kn = kernfs_new_node(parent, name, S_IFLNK|S_IRWXUGO, KERNFS_LINK); + if (!kn) + return ERR_PTR(-ENOMEM); + + if (kernfs_ns_enabled(parent)) + kn->ns = target->ns; + kn->symlink.target_kn = target; + kernfs_get(target); /* ref owned by symlink */ + + error = kernfs_add_one(kn); + if (!error) + return kn; + + kernfs_put(kn); + return ERR_PTR(error); +} + +static int kernfs_get_target_path(struct kernfs_node *parent, + struct kernfs_node *target, char *path) +{ + struct kernfs_node *base, *kn; + char *s = path; + int len = 0; + + /* go up to the root, stop at the base */ + base = parent; + while (base->parent) { + kn = target->parent; + while (kn->parent && base != kn) + kn = kn->parent; + + if (base == kn) + break; + + strcpy(s, "../"); + s += 3; + base = base->parent; + } + + /* determine end of target string for reverse fillup */ + kn = target; + while (kn->parent && kn != base) { + len += strlen(kn->name) + 1; + kn = kn->parent; + } + + /* check limits */ + if (len < 2) + return -EINVAL; + len--; + if ((s - path) + len > PATH_MAX) + return -ENAMETOOLONG; + + /* reverse fillup of target string from target to base */ + kn = target; + while (kn->parent && kn != base) { + int slen = strlen(kn->name); + + len -= slen; + strncpy(s + len, kn->name, slen); + if (len) + s[--len] = '/'; + + kn = kn->parent; + } + + return 0; +} + +static int kernfs_getlink(struct dentry *dentry, char *path) +{ + struct kernfs_node *kn = dentry->d_fsdata; + struct kernfs_node *parent = kn->parent; + struct kernfs_node *target = kn->symlink.target_kn; + int error; + + mutex_lock(&kernfs_mutex); + error = kernfs_get_target_path(parent, target, path); + mutex_unlock(&kernfs_mutex); + + return error; +} + +static void *kernfs_iop_follow_link(struct dentry *dentry, struct nameidata *nd) +{ + int error = -ENOMEM; + unsigned long page = get_zeroed_page(GFP_KERNEL); + if (page) { + error = kernfs_getlink(dentry, (char *) page); + if (error < 0) + free_page((unsigned long)page); + } + nd_set_link(nd, error ? ERR_PTR(error) : (char *)page); + return NULL; +} + +static void kernfs_iop_put_link(struct dentry *dentry, struct nameidata *nd, + void *cookie) +{ + char *page = nd_get_link(nd); + if (!IS_ERR(page)) + free_page((unsigned long)page); +} + +const struct inode_operations kernfs_symlink_iops = { + .setxattr = kernfs_iop_setxattr, + .removexattr = kernfs_iop_removexattr, + .getxattr = kernfs_iop_getxattr, + .listxattr = kernfs_iop_listxattr, + .readlink = generic_readlink, + .follow_link = kernfs_iop_follow_link, + .put_link = kernfs_iop_put_link, + .setattr = kernfs_iop_setattr, + .getattr = kernfs_iop_getattr, + .permission = kernfs_iop_permission, +}; diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c index 10d6c41aecad..6bf06a07f3e0 100644 --- a/fs/lockd/svc.c +++ b/fs/lockd/svc.c @@ -235,6 +235,7 @@ out_err: if (warned++ == 0) printk(KERN_WARNING "lockd_up: makesock failed, error=%d\n", err); + svc_shutdown_net(serv, net); return err; } diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c index e066a3902973..ab798a88ec1d 100644 --- a/fs/lockd/svclock.c +++ b/fs/lockd/svclock.c @@ -779,6 +779,7 @@ nlmsvc_grant_blocked(struct nlm_block *block) struct nlm_file *file = block->b_file; struct nlm_lock *lock = &block->b_call->a_args.lock; int error; + loff_t fl_start, fl_end; dprintk("lockd: grant blocked lock %p\n", block); @@ -796,9 +797,16 @@ nlmsvc_grant_blocked(struct nlm_block *block) } /* Try the lock operation again */ + /* vfs_lock_file() can mangle fl_start and fl_end, but we need + * them unchanged for the GRANT_MSG + */ lock->fl.fl_flags |= FL_SLEEP; + fl_start = lock->fl.fl_start; + fl_end = lock->fl.fl_end; error = vfs_lock_file(file->f_file, F_SETLK, &lock->fl, NULL); lock->fl.fl_flags &= ~FL_SLEEP; + lock->fl.fl_start = fl_start; + lock->fl.fl_end = fl_end; switch (error) { case 0: diff --git a/fs/locks.c b/fs/locks.c index 92a0f0a52b06..13fc7a6d380a 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -135,6 +135,7 @@ #define IS_POSIX(fl) (fl->fl_flags & FL_POSIX) #define IS_FLOCK(fl) (fl->fl_flags & FL_FLOCK) #define IS_LEASE(fl) (fl->fl_flags & (FL_LEASE|FL_DELEG)) +#define IS_FILE_PVT(fl) (fl->fl_flags & FL_FILE_PVT) static bool lease_breaking(struct file_lock *fl) { @@ -344,48 +345,43 @@ static int assign_type(struct file_lock *fl, long type) return 0; } -/* Verify a "struct flock" and copy it to a "struct file_lock" as a POSIX - * style lock. - */ -static int flock_to_posix_lock(struct file *filp, struct file_lock *fl, - struct flock *l) +static int flock64_to_posix_lock(struct file *filp, struct file_lock *fl, + struct flock64 *l) { - off_t start, end; - switch (l->l_whence) { case SEEK_SET: - start = 0; + fl->fl_start = 0; break; case SEEK_CUR: - start = filp->f_pos; + fl->fl_start = filp->f_pos; break; case SEEK_END: - start = i_size_read(file_inode(filp)); + fl->fl_start = i_size_read(file_inode(filp)); break; default: return -EINVAL; } + if (l->l_start > OFFSET_MAX - fl->fl_start) + return -EOVERFLOW; + fl->fl_start += l->l_start; + if (fl->fl_start < 0) + return -EINVAL; /* POSIX-1996 leaves the case l->l_len < 0 undefined; POSIX-2001 defines it. */ - start += l->l_start; - if (start < 0) - return -EINVAL; - fl->fl_end = OFFSET_MAX; if (l->l_len > 0) { - end = start + l->l_len - 1; - fl->fl_end = end; + if (l->l_len - 1 > OFFSET_MAX - fl->fl_start) + return -EOVERFLOW; + fl->fl_end = fl->fl_start + l->l_len - 1; + } else if (l->l_len < 0) { - end = start - 1; - fl->fl_end = end; - start += l->l_len; - if (start < 0) + if (fl->fl_start + l->l_len < 0) return -EINVAL; - } - fl->fl_start = start; /* we record the absolute position */ - if (fl->fl_end < fl->fl_start) - return -EOVERFLOW; - + fl->fl_end = fl->fl_start - 1; + fl->fl_start += l->l_len; + } else + fl->fl_end = OFFSET_MAX; + fl->fl_owner = current->files; fl->fl_pid = current->tgid; fl->fl_file = filp; @@ -393,55 +389,36 @@ static int flock_to_posix_lock(struct file *filp, struct file_lock *fl, fl->fl_ops = NULL; fl->fl_lmops = NULL; - return assign_type(fl, l->l_type); -} - -#if BITS_PER_LONG == 32 -static int flock64_to_posix_lock(struct file *filp, struct file_lock *fl, - struct flock64 *l) -{ - loff_t start; - - switch (l->l_whence) { - case SEEK_SET: - start = 0; - break; - case SEEK_CUR: - start = filp->f_pos; + /* Ensure that fl->fl_filp has compatible f_mode */ + switch (l->l_type) { + case F_RDLCK: + if (!(filp->f_mode & FMODE_READ)) + return -EBADF; break; - case SEEK_END: - start = i_size_read(file_inode(filp)); + case F_WRLCK: + if (!(filp->f_mode & FMODE_WRITE)) + return -EBADF; break; - default: - return -EINVAL; } - start += l->l_start; - if (start < 0) - return -EINVAL; - fl->fl_end = OFFSET_MAX; - if (l->l_len > 0) { - fl->fl_end = start + l->l_len - 1; - } else if (l->l_len < 0) { - fl->fl_end = start - 1; - start += l->l_len; - if (start < 0) - return -EINVAL; - } - fl->fl_start = start; /* we record the absolute position */ - if (fl->fl_end < fl->fl_start) - return -EOVERFLOW; - - fl->fl_owner = current->files; - fl->fl_pid = current->tgid; - fl->fl_file = filp; - fl->fl_flags = FL_POSIX; - fl->fl_ops = NULL; - fl->fl_lmops = NULL; - return assign_type(fl, l->l_type); } -#endif + +/* Verify a "struct flock" and copy it to a "struct file_lock" as a POSIX + * style lock. + */ +static int flock_to_posix_lock(struct file *filp, struct file_lock *fl, + struct flock *l) +{ + struct flock64 ll = { + .l_type = l->l_type, + .l_whence = l->l_whence, + .l_start = l->l_start, + .l_len = l->l_len, + }; + + return flock64_to_posix_lock(filp, fl, &ll); +} /* default lease lock manager operations */ static void lease_break_callback(struct file_lock *fl) @@ -511,8 +488,7 @@ static int posix_same_owner(struct file_lock *fl1, struct file_lock *fl2) } /* Must be called with the i_lock held! */ -static inline void -locks_insert_global_locks(struct file_lock *fl) +static void locks_insert_global_locks(struct file_lock *fl) { lg_local_lock(&file_lock_lglock); fl->fl_link_cpu = smp_processor_id(); @@ -521,8 +497,7 @@ locks_insert_global_locks(struct file_lock *fl) } /* Must be called with the i_lock held! */ -static inline void -locks_delete_global_locks(struct file_lock *fl) +static void locks_delete_global_locks(struct file_lock *fl) { /* * Avoid taking lock if already unhashed. This is safe since this check @@ -544,14 +519,12 @@ posix_owner_key(struct file_lock *fl) return (unsigned long)fl->fl_owner; } -static inline void -locks_insert_global_blocked(struct file_lock *waiter) +static void locks_insert_global_blocked(struct file_lock *waiter) { hash_add(blocked_hash, &waiter->fl_link, posix_owner_key(waiter)); } -static inline void -locks_delete_global_blocked(struct file_lock *waiter) +static void locks_delete_global_blocked(struct file_lock *waiter) { hash_del(&waiter->fl_link); } @@ -581,7 +554,7 @@ static void locks_delete_block(struct file_lock *waiter) * it seems like the reasonable thing to do. * * Must be called with both the i_lock and blocked_lock_lock held. The fl_block - * list itself is protected by the file_lock_list, but by ensuring that the + * list itself is protected by the blocked_lock_lock, but by ensuring that the * i_lock is also held on insertions we can avoid taking the blocked_lock_lock * in some cases when we see that the fl_block list is empty. */ @@ -591,7 +564,7 @@ static void __locks_insert_block(struct file_lock *blocker, BUG_ON(!list_empty(&waiter->fl_block)); waiter->fl_next = blocker; list_add_tail(&waiter->fl_block, &blocker->fl_block); - if (IS_POSIX(blocker)) + if (IS_POSIX(blocker) && !IS_FILE_PVT(blocker)) locks_insert_global_blocked(waiter); } @@ -652,15 +625,18 @@ static void locks_insert_lock(struct file_lock **pos, struct file_lock *fl) locks_insert_global_locks(fl); } -/* - * Delete a lock and then free it. - * Wake up processes that are blocked waiting for this lock, - * notify the FS that the lock has been cleared and - * finally free the lock. +/** + * locks_delete_lock - Delete a lock and then free it. + * @thisfl_p: pointer that points to the fl_next field of the previous + * inode->i_flock list entry + * + * Unlink a lock from all lists and free the namespace reference, but don't + * free it yet. Wake up processes that are blocked waiting for this lock and + * notify the FS that the lock has been cleared. * * Must be called with the i_lock held! */ -static void locks_delete_lock(struct file_lock **thisfl_p) +static void locks_unlink_lock(struct file_lock **thisfl_p) { struct file_lock *fl = *thisfl_p; @@ -675,6 +651,18 @@ static void locks_delete_lock(struct file_lock **thisfl_p) } locks_wake_up_blocks(fl); +} + +/* + * Unlink a lock from all lists and free it. + * + * Must be called with i_lock held! + */ +static void locks_delete_lock(struct file_lock **thisfl_p) +{ + struct file_lock *fl = *thisfl_p; + + locks_unlink_lock(thisfl_p); locks_free_lock(fl); } @@ -769,8 +757,16 @@ EXPORT_SYMBOL(posix_test_lock); * Note: the above assumption may not be true when handling lock * requests from a broken NFS client. It may also fail in the presence * of tasks (such as posix threads) sharing the same open file table. - * * To handle those cases, we just bail out after a few iterations. + * + * For FL_FILE_PVT locks, the owner is the filp, not the files_struct. + * Because the owner is not even nominally tied to a thread of + * execution, the deadlock detection below can't reasonably work well. Just + * skip it for those. + * + * In principle, we could do a more limited deadlock detection on FL_FILE_PVT + * locks that just checks for the case where two tasks are attempting to + * upgrade from read to write locks on the same inode. */ #define MAX_DEADLK_ITERATIONS 10 @@ -793,6 +789,13 @@ static int posix_locks_deadlock(struct file_lock *caller_fl, { int i = 0; + /* + * This deadlock detector can't reasonably detect deadlocks with + * FL_FILE_PVT locks, since they aren't owned by a process, per-se. + */ + if (IS_FILE_PVT(caller_fl)) + return 0; + while ((block_fl = what_owner_is_waiting_for(block_fl))) { if (i++ > MAX_DEADLK_ITERATIONS) return 0; @@ -1152,13 +1155,14 @@ EXPORT_SYMBOL(posix_lock_file_wait); /** * locks_mandatory_locked - Check for an active lock - * @inode: the file to check + * @file: the file to check * * Searches the inode's list of locks to find any POSIX locks which conflict. * This function is called from locks_verify_locked() only. */ -int locks_mandatory_locked(struct inode *inode) +int locks_mandatory_locked(struct file *file) { + struct inode *inode = file_inode(file); fl_owner_t owner = current->files; struct file_lock *fl; @@ -1169,7 +1173,7 @@ int locks_mandatory_locked(struct inode *inode) for (fl = inode->i_flock; fl != NULL; fl = fl->fl_next) { if (!IS_POSIX(fl)) continue; - if (fl->fl_owner != owner) + if (fl->fl_owner != owner && fl->fl_owner != (fl_owner_t)file) break; } spin_unlock(&inode->i_lock); @@ -1195,19 +1199,30 @@ int locks_mandatory_area(int read_write, struct inode *inode, { struct file_lock fl; int error; + bool sleep = false; locks_init_lock(&fl); - fl.fl_owner = current->files; fl.fl_pid = current->tgid; fl.fl_file = filp; fl.fl_flags = FL_POSIX | FL_ACCESS; if (filp && !(filp->f_flags & O_NONBLOCK)) - fl.fl_flags |= FL_SLEEP; + sleep = true; fl.fl_type = (read_write == FLOCK_VERIFY_WRITE) ? F_WRLCK : F_RDLCK; fl.fl_start = offset; fl.fl_end = offset + count - 1; for (;;) { + if (filp) { + fl.fl_owner = (fl_owner_t)filp; + fl.fl_flags &= ~FL_SLEEP; + error = __posix_lock_file(inode, &fl, NULL); + if (!error) + break; + } + + if (sleep) + fl.fl_flags |= FL_SLEEP; + fl.fl_owner = current->files; error = __posix_lock_file(inode, &fl, NULL); if (error != FILE_LOCK_DEFERRED) break; @@ -1472,6 +1487,32 @@ int fcntl_getlease(struct file *filp) return type; } +/** + * check_conflicting_open - see if the given dentry points to a file that has + * an existing open that would conflict with the + * desired lease. + * @dentry: dentry to check + * @arg: type of lease that we're trying to acquire + * + * Check to see if there's an existing open fd on this file that would + * conflict with the lease we're trying to set. + */ +static int +check_conflicting_open(const struct dentry *dentry, const long arg) +{ + int ret = 0; + struct inode *inode = dentry->d_inode; + + if ((arg == F_RDLCK) && (atomic_read(&inode->i_writecount) > 0)) + return -EAGAIN; + + if ((arg == F_WRLCK) && ((d_count(dentry) > 1) || + (atomic_read(&inode->i_count) > 1))) + ret = -EAGAIN; + + return ret; +} + static int generic_add_lease(struct file *filp, long arg, struct file_lock **flp) { struct file_lock *fl, **before, **my_before = NULL, *lease; @@ -1499,12 +1540,8 @@ static int generic_add_lease(struct file *filp, long arg, struct file_lock **flp return -EINVAL; } - error = -EAGAIN; - if ((arg == F_RDLCK) && (atomic_read(&inode->i_writecount) > 0)) - goto out; - if ((arg == F_WRLCK) - && ((d_count(dentry) > 1) - || (atomic_read(&inode->i_count) > 1))) + error = check_conflicting_open(dentry, arg); + if (error) goto out; /* @@ -1549,7 +1586,19 @@ static int generic_add_lease(struct file *filp, long arg, struct file_lock **flp goto out; locks_insert_lock(before, lease); - error = 0; + /* + * The check in break_lease() is lockless. It's possible for another + * open to race in after we did the earlier check for a conflicting + * open but before the lease was inserted. Check again for a + * conflicting open and cancel the lease if there is one. + * + * We also add a barrier here to ensure that the insertion of the lock + * precedes these checks. + */ + smp_mb(); + error = check_conflicting_open(dentry, arg); + if (error) + locks_unlink_lock(flp); out: if (is_deleg) mutex_unlock(&inode->i_mutex); @@ -1842,7 +1891,7 @@ EXPORT_SYMBOL_GPL(vfs_test_lock); static int posix_lock_to_flock(struct flock *flock, struct file_lock *fl) { - flock->l_pid = fl->fl_pid; + flock->l_pid = IS_FILE_PVT(fl) ? -1 : fl->fl_pid; #if BITS_PER_LONG == 32 /* * Make sure we can represent the posix lock via @@ -1864,7 +1913,7 @@ static int posix_lock_to_flock(struct flock *flock, struct file_lock *fl) #if BITS_PER_LONG == 32 static void posix_lock_to_flock64(struct flock64 *flock, struct file_lock *fl) { - flock->l_pid = fl->fl_pid; + flock->l_pid = IS_FILE_PVT(fl) ? -1 : fl->fl_pid; flock->l_start = fl->fl_start; flock->l_len = fl->fl_end == OFFSET_MAX ? 0 : fl->fl_end - fl->fl_start + 1; @@ -1876,7 +1925,7 @@ static void posix_lock_to_flock64(struct flock64 *flock, struct file_lock *fl) /* Report the first existing lock that would conflict with l. * This implements the F_GETLK command of fcntl(). */ -int fcntl_getlk(struct file *filp, struct flock __user *l) +int fcntl_getlk(struct file *filp, unsigned int cmd, struct flock __user *l) { struct file_lock file_lock; struct flock flock; @@ -1893,6 +1942,16 @@ int fcntl_getlk(struct file *filp, struct flock __user *l) if (error) goto out; + if (cmd == F_GETLKP) { + error = -EINVAL; + if (flock.l_pid != 0) + goto out; + + cmd = F_GETLK; + file_lock.fl_flags |= FL_FILE_PVT; + file_lock.fl_owner = (fl_owner_t)filp; + } + error = vfs_test_lock(filp, &file_lock); if (error) goto out; @@ -2012,25 +2071,32 @@ again: error = flock_to_posix_lock(filp, file_lock, &flock); if (error) goto out; - if (cmd == F_SETLKW) { - file_lock->fl_flags |= FL_SLEEP; - } - - error = -EBADF; - switch (flock.l_type) { - case F_RDLCK: - if (!(filp->f_mode & FMODE_READ)) - goto out; - break; - case F_WRLCK: - if (!(filp->f_mode & FMODE_WRITE)) + + /* + * If the cmd is requesting file-private locks, then set the + * FL_FILE_PVT flag and override the owner. + */ + switch (cmd) { + case F_SETLKP: + error = -EINVAL; + if (flock.l_pid != 0) goto out; + + cmd = F_SETLK; + file_lock->fl_flags |= FL_FILE_PVT; + file_lock->fl_owner = (fl_owner_t)filp; break; - case F_UNLCK: - break; - default: + case F_SETLKPW: error = -EINVAL; - goto out; + if (flock.l_pid != 0) + goto out; + + cmd = F_SETLKW; + file_lock->fl_flags |= FL_FILE_PVT; + file_lock->fl_owner = (fl_owner_t)filp; + /* Fallthrough */ + case F_SETLKW: + file_lock->fl_flags |= FL_SLEEP; } error = do_lock_file_wait(filp, cmd, file_lock); @@ -2061,7 +2127,7 @@ out: /* Report the first existing lock that would conflict with l. * This implements the F_GETLK command of fcntl(). */ -int fcntl_getlk64(struct file *filp, struct flock64 __user *l) +int fcntl_getlk64(struct file *filp, unsigned int cmd, struct flock64 __user *l) { struct file_lock file_lock; struct flock64 flock; @@ -2078,6 +2144,16 @@ int fcntl_getlk64(struct file *filp, struct flock64 __user *l) if (error) goto out; + if (cmd == F_GETLKP) { + error = -EINVAL; + if (flock.l_pid != 0) + goto out; + + cmd = F_GETLK64; + file_lock.fl_flags |= FL_FILE_PVT; + file_lock.fl_owner = (fl_owner_t)filp; + } + error = vfs_test_lock(filp, &file_lock); if (error) goto out; @@ -2130,25 +2206,32 @@ again: error = flock64_to_posix_lock(filp, file_lock, &flock); if (error) goto out; - if (cmd == F_SETLKW64) { - file_lock->fl_flags |= FL_SLEEP; - } - - error = -EBADF; - switch (flock.l_type) { - case F_RDLCK: - if (!(filp->f_mode & FMODE_READ)) - goto out; - break; - case F_WRLCK: - if (!(filp->f_mode & FMODE_WRITE)) + + /* + * If the cmd is requesting file-private locks, then set the + * FL_FILE_PVT flag and override the owner. + */ + switch (cmd) { + case F_SETLKP: + error = -EINVAL; + if (flock.l_pid != 0) goto out; + + cmd = F_SETLK64; + file_lock->fl_flags |= FL_FILE_PVT; + file_lock->fl_owner = (fl_owner_t)filp; break; - case F_UNLCK: - break; - default: + case F_SETLKPW: error = -EINVAL; - goto out; + if (flock.l_pid != 0) + goto out; + + cmd = F_SETLKW64; + file_lock->fl_flags |= FL_FILE_PVT; + file_lock->fl_owner = (fl_owner_t)filp; + /* Fallthrough */ + case F_SETLKW64: + file_lock->fl_flags |= FL_SLEEP; } error = do_lock_file_wait(filp, cmd, file_lock); @@ -2209,7 +2292,7 @@ EXPORT_SYMBOL(locks_remove_posix); /* * This function is called on the last close of an open file. */ -void locks_remove_flock(struct file *filp) +void locks_remove_file(struct file *filp) { struct inode * inode = file_inode(filp); struct file_lock *fl; @@ -2218,6 +2301,8 @@ void locks_remove_flock(struct file *filp) if (!inode->i_flock) return; + locks_remove_posix(filp, (fl_owner_t)filp); + if (filp->f_op->flock) { struct file_lock fl = { .fl_pid = current->tgid, @@ -2236,16 +2321,28 @@ void locks_remove_flock(struct file *filp) while ((fl = *before) != NULL) { if (fl->fl_file == filp) { - if (IS_FLOCK(fl)) { - locks_delete_lock(before); - continue; - } if (IS_LEASE(fl)) { lease_modify(before, F_UNLCK); continue; } - /* What? */ - BUG(); + + /* + * There's a leftover lock on the list of a type that + * we didn't expect to see. Most likely a classic + * POSIX lock that ended up not getting released + * properly, or that raced onto the list somehow. Log + * some info about it and then just remove it from + * the list. + */ + WARN(!IS_FLOCK(fl), + "leftover lock: dev=%u:%u ino=%lu type=%hhd flags=0x%x start=%lld end=%lld\n", + MAJOR(inode->i_sb->s_dev), + MINOR(inode->i_sb->s_dev), inode->i_ino, + fl->fl_type, fl->fl_flags, + fl->fl_start, fl->fl_end); + + locks_delete_lock(before); + continue; } before = &fl->fl_next; } @@ -2314,8 +2411,14 @@ static void lock_get_status(struct seq_file *f, struct file_lock *fl, seq_printf(f, "%lld:%s ", id, pfx); if (IS_POSIX(fl)) { - seq_printf(f, "%6s %s ", - (fl->fl_flags & FL_ACCESS) ? "ACCESS" : "POSIX ", + if (fl->fl_flags & FL_ACCESS) + seq_printf(f, "ACCESS"); + else if (IS_FILE_PVT(fl)) + seq_printf(f, "FLPVT "); + else + seq_printf(f, "POSIX "); + + seq_printf(f, " %s ", (inode == NULL) ? "*NOINODE*" : mandatory_lock(inode) ? "MANDATORY" : "ADVISORY "); } else if (IS_FLOCK(fl)) { @@ -2385,6 +2488,7 @@ static int locks_show(struct seq_file *f, void *v) } static void *locks_start(struct seq_file *f, loff_t *pos) + __acquires(&blocked_lock_lock) { struct locks_iterator *iter = f->private; @@ -2403,6 +2507,7 @@ static void *locks_next(struct seq_file *f, void *v, loff_t *pos) } static void locks_stop(struct seq_file *f, void *v) + __releases(&blocked_lock_lock) { spin_unlock(&blocked_lock_lock); lg_global_unlock(&file_lock_lglock); diff --git a/fs/logfs/dev_bdev.c b/fs/logfs/dev_bdev.c index 0f95f0d0b313..76279e11982d 100644 --- a/fs/logfs/dev_bdev.c +++ b/fs/logfs/dev_bdev.c @@ -26,9 +26,9 @@ static int sync_request(struct page *page, struct block_device *bdev, int rw) bio_vec.bv_len = PAGE_SIZE; bio_vec.bv_offset = 0; bio.bi_vcnt = 1; - bio.bi_size = PAGE_SIZE; bio.bi_bdev = bdev; - bio.bi_sector = page->index * (PAGE_SIZE >> 9); + bio.bi_iter.bi_sector = page->index * (PAGE_SIZE >> 9); + bio.bi_iter.bi_size = PAGE_SIZE; return submit_bio_wait(rw, &bio); } @@ -56,22 +56,18 @@ static DECLARE_WAIT_QUEUE_HEAD(wq); static void writeseg_end_io(struct bio *bio, int err) { const int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); - struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1; + struct bio_vec *bvec; + int i; struct super_block *sb = bio->bi_private; struct logfs_super *super = logfs_super(sb); - struct page *page; BUG_ON(!uptodate); /* FIXME: Retry io or write elsewhere */ BUG_ON(err); - BUG_ON(bio->bi_vcnt == 0); - do { - page = bvec->bv_page; - if (--bvec >= bio->bi_io_vec) - prefetchw(&bvec->bv_page->flags); - - end_page_writeback(page); - page_cache_release(page); - } while (bvec >= bio->bi_io_vec); + + bio_for_each_segment_all(bvec, bio, i) { + end_page_writeback(bvec->bv_page); + page_cache_release(bvec->bv_page); + } bio_put(bio); if (atomic_dec_and_test(&super->s_pending_writes)) wake_up(&wq); @@ -96,9 +92,9 @@ static int __bdev_writeseg(struct super_block *sb, u64 ofs, pgoff_t index, if (i >= max_pages) { /* Block layer cannot split bios :( */ bio->bi_vcnt = i; - bio->bi_size = i * PAGE_SIZE; + bio->bi_iter.bi_size = i * PAGE_SIZE; bio->bi_bdev = super->s_bdev; - bio->bi_sector = ofs >> 9; + bio->bi_iter.bi_sector = ofs >> 9; bio->bi_private = sb; bio->bi_end_io = writeseg_end_io; atomic_inc(&super->s_pending_writes); @@ -123,9 +119,9 @@ static int __bdev_writeseg(struct super_block *sb, u64 ofs, pgoff_t index, unlock_page(page); } bio->bi_vcnt = nr_pages; - bio->bi_size = nr_pages * PAGE_SIZE; + bio->bi_iter.bi_size = nr_pages * PAGE_SIZE; bio->bi_bdev = super->s_bdev; - bio->bi_sector = ofs >> 9; + bio->bi_iter.bi_sector = ofs >> 9; bio->bi_private = sb; bio->bi_end_io = writeseg_end_io; atomic_inc(&super->s_pending_writes); @@ -188,9 +184,9 @@ static int do_erase(struct super_block *sb, u64 ofs, pgoff_t index, if (i >= max_pages) { /* Block layer cannot split bios :( */ bio->bi_vcnt = i; - bio->bi_size = i * PAGE_SIZE; + bio->bi_iter.bi_size = i * PAGE_SIZE; bio->bi_bdev = super->s_bdev; - bio->bi_sector = ofs >> 9; + bio->bi_iter.bi_sector = ofs >> 9; bio->bi_private = sb; bio->bi_end_io = erase_end_io; atomic_inc(&super->s_pending_writes); @@ -209,9 +205,9 @@ static int do_erase(struct super_block *sb, u64 ofs, pgoff_t index, bio->bi_io_vec[i].bv_offset = 0; } bio->bi_vcnt = nr_pages; - bio->bi_size = nr_pages * PAGE_SIZE; + bio->bi_iter.bi_size = nr_pages * PAGE_SIZE; bio->bi_bdev = super->s_bdev; - bio->bi_sector = ofs >> 9; + bio->bi_iter.bi_sector = ofs >> 9; bio->bi_private = sb; bio->bi_end_io = erase_end_io; atomic_inc(&super->s_pending_writes); diff --git a/fs/logfs/readwrite.c b/fs/logfs/readwrite.c index 9a59cbade2fb..48140315f627 100644 --- a/fs/logfs/readwrite.c +++ b/fs/logfs/readwrite.c @@ -2180,7 +2180,7 @@ void logfs_evict_inode(struct inode *inode) do_delete_inode(inode); } } - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); /* Cheaper version of write_inode. All changes are concealed in diff --git a/fs/logfs/segment.c b/fs/logfs/segment.c index d448a777166b..7f9b096d8d57 100644 --- a/fs/logfs/segment.c +++ b/fs/logfs/segment.c @@ -62,7 +62,8 @@ static struct page *get_mapping_page(struct super_block *sb, pgoff_t index, page = read_cache_page(mapping, index, filler, sb); else { page = find_or_create_page(mapping, index, GFP_NOFS); - unlock_page(page); + if (page) + unlock_page(page); } return page; } diff --git a/fs/mbcache.c b/fs/mbcache.c index e519e45bf673..bf166e388f0d 100644 --- a/fs/mbcache.c +++ b/fs/mbcache.c @@ -26,6 +26,41 @@ * back on the lru list. */ +/* + * Lock descriptions and usage: + * + * Each hash chain of both the block and index hash tables now contains + * a built-in lock used to serialize accesses to the hash chain. + * + * Accesses to global data structures mb_cache_list and mb_cache_lru_list + * are serialized via the global spinlock mb_cache_spinlock. + * + * Each mb_cache_entry contains a spinlock, e_entry_lock, to serialize + * accesses to its local data, such as e_used and e_queued. + * + * Lock ordering: + * + * Each block hash chain's lock has the highest lock order, followed by an + * index hash chain's lock, mb_cache_bg_lock (used to implement mb_cache_entry's + * lock), and mb_cach_spinlock, with the lowest order. While holding + * either a block or index hash chain lock, a thread can acquire an + * mc_cache_bg_lock, which in turn can also acquire mb_cache_spinlock. + * + * Synchronization: + * + * Since both mb_cache_entry_get and mb_cache_entry_find scan the block and + * index hash chian, it needs to lock the corresponding hash chain. For each + * mb_cache_entry within the chain, it needs to lock the mb_cache_entry to + * prevent either any simultaneous release or free on the entry and also + * to serialize accesses to either the e_used or e_queued member of the entry. + * + * To avoid having a dangling reference to an already freed + * mb_cache_entry, an mb_cache_entry is only freed when it is not on a + * block hash chain and also no longer being referenced, both e_used, + * and e_queued are 0's. When an mb_cache_entry is explicitly freed it is + * first removed from a block hash chain. + */ + #include <linux/kernel.h> #include <linux/module.h> @@ -34,9 +69,10 @@ #include <linux/mm.h> #include <linux/slab.h> #include <linux/sched.h> -#include <linux/init.h> +#include <linux/list_bl.h> #include <linux/mbcache.h> - +#include <linux/init.h> +#include <linux/blockgroup_lock.h> #ifdef MB_CACHE_DEBUG # define mb_debug(f...) do { \ @@ -57,8 +93,14 @@ #define MB_CACHE_WRITER ((unsigned short)~0U >> 1) +#define MB_CACHE_ENTRY_LOCK_BITS __builtin_log2(NR_BG_LOCKS) +#define MB_CACHE_ENTRY_LOCK_INDEX(ce) \ + (hash_long((unsigned long)ce, MB_CACHE_ENTRY_LOCK_BITS)) + static DECLARE_WAIT_QUEUE_HEAD(mb_cache_queue); - +static struct blockgroup_lock *mb_cache_bg_lock; +static struct kmem_cache *mb_cache_kmem_cache; + MODULE_AUTHOR("Andreas Gruenbacher <a.gruenbacher@computer.org>"); MODULE_DESCRIPTION("Meta block cache (for extended attributes)"); MODULE_LICENSE("GPL"); @@ -86,58 +128,110 @@ static LIST_HEAD(mb_cache_list); static LIST_HEAD(mb_cache_lru_list); static DEFINE_SPINLOCK(mb_cache_spinlock); +static inline void +__spin_lock_mb_cache_entry(struct mb_cache_entry *ce) +{ + spin_lock(bgl_lock_ptr(mb_cache_bg_lock, + MB_CACHE_ENTRY_LOCK_INDEX(ce))); +} + +static inline void +__spin_unlock_mb_cache_entry(struct mb_cache_entry *ce) +{ + spin_unlock(bgl_lock_ptr(mb_cache_bg_lock, + MB_CACHE_ENTRY_LOCK_INDEX(ce))); +} + static inline int -__mb_cache_entry_is_hashed(struct mb_cache_entry *ce) +__mb_cache_entry_is_block_hashed(struct mb_cache_entry *ce) { - return !list_empty(&ce->e_block_list); + return !hlist_bl_unhashed(&ce->e_block_list); } -static void -__mb_cache_entry_unhash(struct mb_cache_entry *ce) +static inline void +__mb_cache_entry_unhash_block(struct mb_cache_entry *ce) { - if (__mb_cache_entry_is_hashed(ce)) { - list_del_init(&ce->e_block_list); - list_del(&ce->e_index.o_list); - } + if (__mb_cache_entry_is_block_hashed(ce)) + hlist_bl_del_init(&ce->e_block_list); } +static inline int +__mb_cache_entry_is_index_hashed(struct mb_cache_entry *ce) +{ + return !hlist_bl_unhashed(&ce->e_index.o_list); +} + +static inline void +__mb_cache_entry_unhash_index(struct mb_cache_entry *ce) +{ + if (__mb_cache_entry_is_index_hashed(ce)) + hlist_bl_del_init(&ce->e_index.o_list); +} + +/* + * __mb_cache_entry_unhash_unlock() + * + * This function is called to unhash both the block and index hash + * chain. + * It assumes both the block and index hash chain is locked upon entry. + * It also unlock both hash chains both exit + */ +static inline void +__mb_cache_entry_unhash_unlock(struct mb_cache_entry *ce) +{ + __mb_cache_entry_unhash_index(ce); + hlist_bl_unlock(ce->e_index_hash_p); + __mb_cache_entry_unhash_block(ce); + hlist_bl_unlock(ce->e_block_hash_p); +} static void __mb_cache_entry_forget(struct mb_cache_entry *ce, gfp_t gfp_mask) { struct mb_cache *cache = ce->e_cache; - mb_assert(!(ce->e_used || ce->e_queued)); + mb_assert(!(ce->e_used || ce->e_queued || atomic_read(&ce->e_refcnt))); kmem_cache_free(cache->c_entry_cache, ce); atomic_dec(&cache->c_entry_count); } - static void -__mb_cache_entry_release_unlock(struct mb_cache_entry *ce) - __releases(mb_cache_spinlock) +__mb_cache_entry_release(struct mb_cache_entry *ce) { + /* First lock the entry to serialize access to its local data. */ + __spin_lock_mb_cache_entry(ce); /* Wake up all processes queuing for this cache entry. */ if (ce->e_queued) wake_up_all(&mb_cache_queue); if (ce->e_used >= MB_CACHE_WRITER) ce->e_used -= MB_CACHE_WRITER; + /* + * Make sure that all cache entries on lru_list have + * both e_used and e_qued of 0s. + */ ce->e_used--; - if (!(ce->e_used || ce->e_queued)) { - if (!__mb_cache_entry_is_hashed(ce)) + if (!(ce->e_used || ce->e_queued || atomic_read(&ce->e_refcnt))) { + if (!__mb_cache_entry_is_block_hashed(ce)) { + __spin_unlock_mb_cache_entry(ce); goto forget; - mb_assert(list_empty(&ce->e_lru_list)); - list_add_tail(&ce->e_lru_list, &mb_cache_lru_list); + } + /* + * Need access to lru list, first drop entry lock, + * then reacquire the lock in the proper order. + */ + spin_lock(&mb_cache_spinlock); + if (list_empty(&ce->e_lru_list)) + list_add_tail(&ce->e_lru_list, &mb_cache_lru_list); + spin_unlock(&mb_cache_spinlock); } - spin_unlock(&mb_cache_spinlock); + __spin_unlock_mb_cache_entry(ce); return; forget: - spin_unlock(&mb_cache_spinlock); + mb_assert(list_empty(&ce->e_lru_list)); __mb_cache_entry_forget(ce, GFP_KERNEL); } - /* * mb_cache_shrink_scan() memory pressure callback * @@ -160,17 +254,34 @@ mb_cache_shrink_scan(struct shrinker *shrink, struct shrink_control *sc) mb_debug("trying to free %d entries", nr_to_scan); spin_lock(&mb_cache_spinlock); - while (nr_to_scan-- && !list_empty(&mb_cache_lru_list)) { + while ((nr_to_scan-- > 0) && !list_empty(&mb_cache_lru_list)) { struct mb_cache_entry *ce = list_entry(mb_cache_lru_list.next, - struct mb_cache_entry, e_lru_list); - list_move_tail(&ce->e_lru_list, &free_list); - __mb_cache_entry_unhash(ce); - freed++; + struct mb_cache_entry, e_lru_list); + list_del_init(&ce->e_lru_list); + if (ce->e_used || ce->e_queued || atomic_read(&ce->e_refcnt)) + continue; + spin_unlock(&mb_cache_spinlock); + /* Prevent any find or get operation on the entry */ + hlist_bl_lock(ce->e_block_hash_p); + hlist_bl_lock(ce->e_index_hash_p); + /* Ignore if it is touched by a find/get */ + if (ce->e_used || ce->e_queued || atomic_read(&ce->e_refcnt) || + !list_empty(&ce->e_lru_list)) { + hlist_bl_unlock(ce->e_index_hash_p); + hlist_bl_unlock(ce->e_block_hash_p); + spin_lock(&mb_cache_spinlock); + continue; + } + __mb_cache_entry_unhash_unlock(ce); + list_add_tail(&ce->e_lru_list, &free_list); + spin_lock(&mb_cache_spinlock); } spin_unlock(&mb_cache_spinlock); + list_for_each_entry_safe(entry, tmp, &free_list, e_lru_list) { __mb_cache_entry_forget(entry, gfp_mask); + freed++; } return freed; } @@ -215,29 +326,40 @@ mb_cache_create(const char *name, int bucket_bits) int n, bucket_count = 1 << bucket_bits; struct mb_cache *cache = NULL; + if (!mb_cache_bg_lock) { + mb_cache_bg_lock = kmalloc(sizeof(struct blockgroup_lock), + GFP_KERNEL); + if (!mb_cache_bg_lock) + return NULL; + bgl_lock_init(mb_cache_bg_lock); + } + cache = kmalloc(sizeof(struct mb_cache), GFP_KERNEL); if (!cache) return NULL; cache->c_name = name; atomic_set(&cache->c_entry_count, 0); cache->c_bucket_bits = bucket_bits; - cache->c_block_hash = kmalloc(bucket_count * sizeof(struct list_head), - GFP_KERNEL); + cache->c_block_hash = kmalloc(bucket_count * + sizeof(struct hlist_bl_head), GFP_KERNEL); if (!cache->c_block_hash) goto fail; for (n=0; n<bucket_count; n++) - INIT_LIST_HEAD(&cache->c_block_hash[n]); - cache->c_index_hash = kmalloc(bucket_count * sizeof(struct list_head), - GFP_KERNEL); + INIT_HLIST_BL_HEAD(&cache->c_block_hash[n]); + cache->c_index_hash = kmalloc(bucket_count * + sizeof(struct hlist_bl_head), GFP_KERNEL); if (!cache->c_index_hash) goto fail; for (n=0; n<bucket_count; n++) - INIT_LIST_HEAD(&cache->c_index_hash[n]); - cache->c_entry_cache = kmem_cache_create(name, - sizeof(struct mb_cache_entry), 0, - SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD, NULL); - if (!cache->c_entry_cache) - goto fail2; + INIT_HLIST_BL_HEAD(&cache->c_index_hash[n]); + if (!mb_cache_kmem_cache) { + mb_cache_kmem_cache = kmem_cache_create(name, + sizeof(struct mb_cache_entry), 0, + SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD, NULL); + if (!mb_cache_kmem_cache) + goto fail2; + } + cache->c_entry_cache = mb_cache_kmem_cache; /* * Set an upper limit on the number of cache entries so that the hash @@ -273,21 +395,47 @@ void mb_cache_shrink(struct block_device *bdev) { LIST_HEAD(free_list); - struct list_head *l, *ltmp; + struct list_head *l; + struct mb_cache_entry *ce, *tmp; + l = &mb_cache_lru_list; spin_lock(&mb_cache_spinlock); - list_for_each_safe(l, ltmp, &mb_cache_lru_list) { - struct mb_cache_entry *ce = - list_entry(l, struct mb_cache_entry, e_lru_list); + while (!list_is_last(l, &mb_cache_lru_list)) { + l = l->next; + ce = list_entry(l, struct mb_cache_entry, e_lru_list); if (ce->e_bdev == bdev) { - list_move_tail(&ce->e_lru_list, &free_list); - __mb_cache_entry_unhash(ce); + list_del_init(&ce->e_lru_list); + if (ce->e_used || ce->e_queued || + atomic_read(&ce->e_refcnt)) + continue; + spin_unlock(&mb_cache_spinlock); + /* + * Prevent any find or get operation on the entry. + */ + hlist_bl_lock(ce->e_block_hash_p); + hlist_bl_lock(ce->e_index_hash_p); + /* Ignore if it is touched by a find/get */ + if (ce->e_used || ce->e_queued || + atomic_read(&ce->e_refcnt) || + !list_empty(&ce->e_lru_list)) { + hlist_bl_unlock(ce->e_index_hash_p); + hlist_bl_unlock(ce->e_block_hash_p); + l = &mb_cache_lru_list; + spin_lock(&mb_cache_spinlock); + continue; + } + __mb_cache_entry_unhash_unlock(ce); + mb_assert(!(ce->e_used || ce->e_queued || + atomic_read(&ce->e_refcnt))); + list_add_tail(&ce->e_lru_list, &free_list); + l = &mb_cache_lru_list; + spin_lock(&mb_cache_spinlock); } } spin_unlock(&mb_cache_spinlock); - list_for_each_safe(l, ltmp, &free_list) { - __mb_cache_entry_forget(list_entry(l, struct mb_cache_entry, - e_lru_list), GFP_KERNEL); + + list_for_each_entry_safe(ce, tmp, &free_list, e_lru_list) { + __mb_cache_entry_forget(ce, GFP_KERNEL); } } @@ -303,23 +451,27 @@ void mb_cache_destroy(struct mb_cache *cache) { LIST_HEAD(free_list); - struct list_head *l, *ltmp; + struct mb_cache_entry *ce, *tmp; spin_lock(&mb_cache_spinlock); - list_for_each_safe(l, ltmp, &mb_cache_lru_list) { - struct mb_cache_entry *ce = - list_entry(l, struct mb_cache_entry, e_lru_list); - if (ce->e_cache == cache) { + list_for_each_entry_safe(ce, tmp, &mb_cache_lru_list, e_lru_list) { + if (ce->e_cache == cache) list_move_tail(&ce->e_lru_list, &free_list); - __mb_cache_entry_unhash(ce); - } } list_del(&cache->c_cache_list); spin_unlock(&mb_cache_spinlock); - list_for_each_safe(l, ltmp, &free_list) { - __mb_cache_entry_forget(list_entry(l, struct mb_cache_entry, - e_lru_list), GFP_KERNEL); + list_for_each_entry_safe(ce, tmp, &free_list, e_lru_list) { + list_del_init(&ce->e_lru_list); + /* + * Prevent any find or get operation on the entry. + */ + hlist_bl_lock(ce->e_block_hash_p); + hlist_bl_lock(ce->e_index_hash_p); + mb_assert(!(ce->e_used || ce->e_queued || + atomic_read(&ce->e_refcnt))); + __mb_cache_entry_unhash_unlock(ce); + __mb_cache_entry_forget(ce, GFP_KERNEL); } if (atomic_read(&cache->c_entry_count) > 0) { @@ -328,8 +480,10 @@ mb_cache_destroy(struct mb_cache *cache) atomic_read(&cache->c_entry_count)); } - kmem_cache_destroy(cache->c_entry_cache); - + if (list_empty(&mb_cache_list)) { + kmem_cache_destroy(mb_cache_kmem_cache); + mb_cache_kmem_cache = NULL; + } kfree(cache->c_index_hash); kfree(cache->c_block_hash); kfree(cache); @@ -346,28 +500,61 @@ mb_cache_destroy(struct mb_cache *cache) struct mb_cache_entry * mb_cache_entry_alloc(struct mb_cache *cache, gfp_t gfp_flags) { - struct mb_cache_entry *ce = NULL; + struct mb_cache_entry *ce; if (atomic_read(&cache->c_entry_count) >= cache->c_max_entries) { + struct list_head *l; + + l = &mb_cache_lru_list; spin_lock(&mb_cache_spinlock); - if (!list_empty(&mb_cache_lru_list)) { - ce = list_entry(mb_cache_lru_list.next, - struct mb_cache_entry, e_lru_list); - list_del_init(&ce->e_lru_list); - __mb_cache_entry_unhash(ce); + while (!list_is_last(l, &mb_cache_lru_list)) { + l = l->next; + ce = list_entry(l, struct mb_cache_entry, e_lru_list); + if (ce->e_cache == cache) { + list_del_init(&ce->e_lru_list); + if (ce->e_used || ce->e_queued || + atomic_read(&ce->e_refcnt)) + continue; + spin_unlock(&mb_cache_spinlock); + /* + * Prevent any find or get operation on the + * entry. + */ + hlist_bl_lock(ce->e_block_hash_p); + hlist_bl_lock(ce->e_index_hash_p); + /* Ignore if it is touched by a find/get */ + if (ce->e_used || ce->e_queued || + atomic_read(&ce->e_refcnt) || + !list_empty(&ce->e_lru_list)) { + hlist_bl_unlock(ce->e_index_hash_p); + hlist_bl_unlock(ce->e_block_hash_p); + l = &mb_cache_lru_list; + spin_lock(&mb_cache_spinlock); + continue; + } + mb_assert(list_empty(&ce->e_lru_list)); + mb_assert(!(ce->e_used || ce->e_queued || + atomic_read(&ce->e_refcnt))); + __mb_cache_entry_unhash_unlock(ce); + goto found; + } } spin_unlock(&mb_cache_spinlock); } - if (!ce) { - ce = kmem_cache_alloc(cache->c_entry_cache, gfp_flags); - if (!ce) - return NULL; - atomic_inc(&cache->c_entry_count); - INIT_LIST_HEAD(&ce->e_lru_list); - INIT_LIST_HEAD(&ce->e_block_list); - ce->e_cache = cache; - ce->e_queued = 0; - } + + ce = kmem_cache_alloc(cache->c_entry_cache, gfp_flags); + if (!ce) + return NULL; + atomic_inc(&cache->c_entry_count); + INIT_LIST_HEAD(&ce->e_lru_list); + INIT_HLIST_BL_NODE(&ce->e_block_list); + INIT_HLIST_BL_NODE(&ce->e_index.o_list); + ce->e_cache = cache; + ce->e_queued = 0; + atomic_set(&ce->e_refcnt, 0); +found: + ce->e_block_hash_p = &cache->c_block_hash[0]; + ce->e_index_hash_p = &cache->c_index_hash[0]; ce->e_used = 1 + MB_CACHE_WRITER; return ce; } @@ -393,29 +580,38 @@ mb_cache_entry_insert(struct mb_cache_entry *ce, struct block_device *bdev, { struct mb_cache *cache = ce->e_cache; unsigned int bucket; - struct list_head *l; - int error = -EBUSY; + struct hlist_bl_node *l; + struct hlist_bl_head *block_hash_p; + struct hlist_bl_head *index_hash_p; + struct mb_cache_entry *lce; + mb_assert(ce); bucket = hash_long((unsigned long)bdev + (block & 0xffffffff), cache->c_bucket_bits); - spin_lock(&mb_cache_spinlock); - list_for_each_prev(l, &cache->c_block_hash[bucket]) { - struct mb_cache_entry *ce = - list_entry(l, struct mb_cache_entry, e_block_list); - if (ce->e_bdev == bdev && ce->e_block == block) - goto out; + block_hash_p = &cache->c_block_hash[bucket]; + hlist_bl_lock(block_hash_p); + hlist_bl_for_each_entry(lce, l, block_hash_p, e_block_list) { + if (lce->e_bdev == bdev && lce->e_block == block) { + hlist_bl_unlock(block_hash_p); + return -EBUSY; + } } - __mb_cache_entry_unhash(ce); + mb_assert(!__mb_cache_entry_is_block_hashed(ce)); + __mb_cache_entry_unhash_block(ce); + __mb_cache_entry_unhash_index(ce); ce->e_bdev = bdev; ce->e_block = block; - list_add(&ce->e_block_list, &cache->c_block_hash[bucket]); + ce->e_block_hash_p = block_hash_p; ce->e_index.o_key = key; + hlist_bl_add_head(&ce->e_block_list, block_hash_p); + hlist_bl_unlock(block_hash_p); bucket = hash_long(key, cache->c_bucket_bits); - list_add(&ce->e_index.o_list, &cache->c_index_hash[bucket]); - error = 0; -out: - spin_unlock(&mb_cache_spinlock); - return error; + index_hash_p = &cache->c_index_hash[bucket]; + hlist_bl_lock(index_hash_p); + ce->e_index_hash_p = index_hash_p; + hlist_bl_add_head(&ce->e_index.o_list, index_hash_p); + hlist_bl_unlock(index_hash_p); + return 0; } @@ -429,24 +625,26 @@ out: void mb_cache_entry_release(struct mb_cache_entry *ce) { - spin_lock(&mb_cache_spinlock); - __mb_cache_entry_release_unlock(ce); + __mb_cache_entry_release(ce); } /* * mb_cache_entry_free() * - * This is equivalent to the sequence mb_cache_entry_takeout() -- - * mb_cache_entry_release(). */ void mb_cache_entry_free(struct mb_cache_entry *ce) { - spin_lock(&mb_cache_spinlock); + mb_assert(ce); mb_assert(list_empty(&ce->e_lru_list)); - __mb_cache_entry_unhash(ce); - __mb_cache_entry_release_unlock(ce); + hlist_bl_lock(ce->e_index_hash_p); + __mb_cache_entry_unhash_index(ce); + hlist_bl_unlock(ce->e_index_hash_p); + hlist_bl_lock(ce->e_block_hash_p); + __mb_cache_entry_unhash_block(ce); + hlist_bl_unlock(ce->e_block_hash_p); + __mb_cache_entry_release(ce); } @@ -463,84 +661,110 @@ mb_cache_entry_get(struct mb_cache *cache, struct block_device *bdev, sector_t block) { unsigned int bucket; - struct list_head *l; + struct hlist_bl_node *l; struct mb_cache_entry *ce; + struct hlist_bl_head *block_hash_p; bucket = hash_long((unsigned long)bdev + (block & 0xffffffff), cache->c_bucket_bits); - spin_lock(&mb_cache_spinlock); - list_for_each(l, &cache->c_block_hash[bucket]) { - ce = list_entry(l, struct mb_cache_entry, e_block_list); + block_hash_p = &cache->c_block_hash[bucket]; + /* First serialize access to the block corresponding hash chain. */ + hlist_bl_lock(block_hash_p); + hlist_bl_for_each_entry(ce, l, block_hash_p, e_block_list) { + mb_assert(ce->e_block_hash_p == block_hash_p); if (ce->e_bdev == bdev && ce->e_block == block) { - DEFINE_WAIT(wait); + /* + * Prevent a free from removing the entry. + */ + atomic_inc(&ce->e_refcnt); + hlist_bl_unlock(block_hash_p); + __spin_lock_mb_cache_entry(ce); + atomic_dec(&ce->e_refcnt); + if (ce->e_used > 0) { + DEFINE_WAIT(wait); + while (ce->e_used > 0) { + ce->e_queued++; + prepare_to_wait(&mb_cache_queue, &wait, + TASK_UNINTERRUPTIBLE); + __spin_unlock_mb_cache_entry(ce); + schedule(); + __spin_lock_mb_cache_entry(ce); + ce->e_queued--; + } + finish_wait(&mb_cache_queue, &wait); + } + ce->e_used += 1 + MB_CACHE_WRITER; + __spin_unlock_mb_cache_entry(ce); - if (!list_empty(&ce->e_lru_list)) + if (!list_empty(&ce->e_lru_list)) { + spin_lock(&mb_cache_spinlock); list_del_init(&ce->e_lru_list); - - while (ce->e_used > 0) { - ce->e_queued++; - prepare_to_wait(&mb_cache_queue, &wait, - TASK_UNINTERRUPTIBLE); spin_unlock(&mb_cache_spinlock); - schedule(); - spin_lock(&mb_cache_spinlock); - ce->e_queued--; } - finish_wait(&mb_cache_queue, &wait); - ce->e_used += 1 + MB_CACHE_WRITER; - - if (!__mb_cache_entry_is_hashed(ce)) { - __mb_cache_entry_release_unlock(ce); + if (!__mb_cache_entry_is_block_hashed(ce)) { + __mb_cache_entry_release(ce); return NULL; } - goto cleanup; + return ce; } } - ce = NULL; - -cleanup: - spin_unlock(&mb_cache_spinlock); - return ce; + hlist_bl_unlock(block_hash_p); + return NULL; } #if !defined(MB_CACHE_INDEXES_COUNT) || (MB_CACHE_INDEXES_COUNT > 0) static struct mb_cache_entry * -__mb_cache_entry_find(struct list_head *l, struct list_head *head, +__mb_cache_entry_find(struct hlist_bl_node *l, struct hlist_bl_head *head, struct block_device *bdev, unsigned int key) { - while (l != head) { + + /* The index hash chain is alredy acquire by caller. */ + while (l != NULL) { struct mb_cache_entry *ce = - list_entry(l, struct mb_cache_entry, e_index.o_list); + hlist_bl_entry(l, struct mb_cache_entry, + e_index.o_list); + mb_assert(ce->e_index_hash_p == head); if (ce->e_bdev == bdev && ce->e_index.o_key == key) { - DEFINE_WAIT(wait); - - if (!list_empty(&ce->e_lru_list)) - list_del_init(&ce->e_lru_list); - + /* + * Prevent a free from removing the entry. + */ + atomic_inc(&ce->e_refcnt); + hlist_bl_unlock(head); + __spin_lock_mb_cache_entry(ce); + atomic_dec(&ce->e_refcnt); + ce->e_used++; /* Incrementing before holding the lock gives readers priority over writers. */ - ce->e_used++; - while (ce->e_used >= MB_CACHE_WRITER) { - ce->e_queued++; - prepare_to_wait(&mb_cache_queue, &wait, - TASK_UNINTERRUPTIBLE); - spin_unlock(&mb_cache_spinlock); - schedule(); - spin_lock(&mb_cache_spinlock); - ce->e_queued--; + if (ce->e_used >= MB_CACHE_WRITER) { + DEFINE_WAIT(wait); + + while (ce->e_used >= MB_CACHE_WRITER) { + ce->e_queued++; + prepare_to_wait(&mb_cache_queue, &wait, + TASK_UNINTERRUPTIBLE); + __spin_unlock_mb_cache_entry(ce); + schedule(); + __spin_lock_mb_cache_entry(ce); + ce->e_queued--; + } + finish_wait(&mb_cache_queue, &wait); } - finish_wait(&mb_cache_queue, &wait); - - if (!__mb_cache_entry_is_hashed(ce)) { - __mb_cache_entry_release_unlock(ce); + __spin_unlock_mb_cache_entry(ce); + if (!list_empty(&ce->e_lru_list)) { spin_lock(&mb_cache_spinlock); + list_del_init(&ce->e_lru_list); + spin_unlock(&mb_cache_spinlock); + } + if (!__mb_cache_entry_is_block_hashed(ce)) { + __mb_cache_entry_release(ce); return ERR_PTR(-EAGAIN); } return ce; } l = l->next; } + hlist_bl_unlock(head); return NULL; } @@ -562,13 +786,17 @@ mb_cache_entry_find_first(struct mb_cache *cache, struct block_device *bdev, unsigned int key) { unsigned int bucket = hash_long(key, cache->c_bucket_bits); - struct list_head *l; - struct mb_cache_entry *ce; - - spin_lock(&mb_cache_spinlock); - l = cache->c_index_hash[bucket].next; - ce = __mb_cache_entry_find(l, &cache->c_index_hash[bucket], bdev, key); - spin_unlock(&mb_cache_spinlock); + struct hlist_bl_node *l; + struct mb_cache_entry *ce = NULL; + struct hlist_bl_head *index_hash_p; + + index_hash_p = &cache->c_index_hash[bucket]; + hlist_bl_lock(index_hash_p); + if (!hlist_bl_empty(index_hash_p)) { + l = hlist_bl_first(index_hash_p); + ce = __mb_cache_entry_find(l, index_hash_p, bdev, key); + } else + hlist_bl_unlock(index_hash_p); return ce; } @@ -597,13 +825,17 @@ mb_cache_entry_find_next(struct mb_cache_entry *prev, { struct mb_cache *cache = prev->e_cache; unsigned int bucket = hash_long(key, cache->c_bucket_bits); - struct list_head *l; + struct hlist_bl_node *l; struct mb_cache_entry *ce; + struct hlist_bl_head *index_hash_p; - spin_lock(&mb_cache_spinlock); + index_hash_p = &cache->c_index_hash[bucket]; + mb_assert(prev->e_index_hash_p == index_hash_p); + hlist_bl_lock(index_hash_p); + mb_assert(!hlist_bl_empty(index_hash_p)); l = prev->e_index.o_list.next; - ce = __mb_cache_entry_find(l, &cache->c_index_hash[bucket], bdev, key); - __mb_cache_entry_release_unlock(prev); + ce = __mb_cache_entry_find(l, index_hash_p, bdev, key); + __mb_cache_entry_release(prev); return ce; } diff --git a/fs/minix/inode.c b/fs/minix/inode.c index 0332109162a5..f007a3355570 100644 --- a/fs/minix/inode.c +++ b/fs/minix/inode.c @@ -26,7 +26,7 @@ static int minix_remount (struct super_block * sb, int * flags, char * data); static void minix_evict_inode(struct inode *inode) { - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); if (!inode->i_nlink) { inode->i_size = 0; minix_truncate(inode); @@ -86,7 +86,7 @@ static void init_once(void *foo) inode_init_once(&ei->vfs_inode); } -static int init_inodecache(void) +static int __init init_inodecache(void) { minix_inode_cachep = kmem_cache_create("minix_inode_cache", sizeof(struct minix_inode_info), @@ -123,6 +123,7 @@ static int minix_remount (struct super_block * sb, int * flags, char * data) struct minix_sb_info * sbi = minix_sb(sb); struct minix_super_block * ms; + sync_filesystem(sb); ms = sbi->s_ms; if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) return 0; diff --git a/fs/mount.h b/fs/mount.h index d64c594be6c4..b29e42f05f34 100644 --- a/fs/mount.h +++ b/fs/mount.h @@ -19,13 +19,13 @@ struct mnt_pcp { }; struct mountpoint { - struct list_head m_hash; + struct hlist_node m_hash; struct dentry *m_dentry; int m_count; }; struct mount { - struct list_head mnt_hash; + struct hlist_node mnt_hash; struct mount *mnt_parent; struct dentry *mnt_mountpoint; struct vfsmount mnt; @@ -74,7 +74,7 @@ static inline int mnt_has_parent(struct mount *mnt) static inline int is_mounted(struct vfsmount *mnt) { /* neither detached nor internal? */ - return !IS_ERR_OR_NULL(real_mount(mnt)); + return !IS_ERR_OR_NULL(real_mount(mnt)->mnt_ns); } extern struct mount *__lookup_mnt(struct vfsmount *, struct dentry *); diff --git a/fs/mpage.c b/fs/mpage.c index 0face1c4d4c6..4979ffa60aaa 100644 --- a/fs/mpage.c +++ b/fs/mpage.c @@ -43,16 +43,14 @@ */ static void mpage_end_io(struct bio *bio, int err) { - const int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); - struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1; + struct bio_vec *bv; + int i; - do { - struct page *page = bvec->bv_page; + bio_for_each_segment_all(bv, bio, i) { + struct page *page = bv->bv_page; - if (--bvec >= bio->bi_io_vec) - prefetchw(&bvec->bv_page->flags); if (bio_data_dir(bio) == READ) { - if (uptodate) { + if (!err) { SetPageUptodate(page); } else { ClearPageUptodate(page); @@ -60,14 +58,15 @@ static void mpage_end_io(struct bio *bio, int err) } unlock_page(page); } else { /* bio_data_dir(bio) == WRITE */ - if (!uptodate) { + if (err) { SetPageError(page); if (page->mapping) set_bit(AS_EIO, &page->mapping->flags); } end_page_writeback(page); } - } while (bvec >= bio->bi_io_vec); + } + bio_put(bio); } @@ -94,7 +93,7 @@ mpage_alloc(struct block_device *bdev, if (bio) { bio->bi_bdev = bdev; - bio->bi_sector = first_sector; + bio->bi_iter.bi_sector = first_sector; } return bio; } diff --git a/fs/namei.c b/fs/namei.c index 3531deebad30..88339f59efb5 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -196,6 +196,7 @@ recopy: goto error; result->uptr = filename; + result->aname = NULL; audit_getname(result); return result; @@ -209,7 +210,35 @@ getname(const char __user * filename) { return getname_flags(filename, 0, NULL); } -EXPORT_SYMBOL(getname); + +/* + * The "getname_kernel()" interface doesn't do pathnames longer + * than EMBEDDED_NAME_MAX. Deal with it - you're a kernel user. + */ +struct filename * +getname_kernel(const char * filename) +{ + struct filename *result; + char *kname; + int len; + + len = strlen(filename); + if (len >= EMBEDDED_NAME_MAX) + return ERR_PTR(-ENAMETOOLONG); + + result = __getname(); + if (unlikely(!result)) + return ERR_PTR(-ENOMEM); + + kname = (char *)result + sizeof(*result); + result->name = kname; + result->uptr = NULL; + result->aname = NULL; + result->separate = false; + + strlcpy(kname, filename, EMBEDDED_NAME_MAX); + return result; +} #ifdef CONFIG_AUDITSYSCALL void putname(struct filename *name) @@ -235,27 +264,9 @@ static int check_acl(struct inode *inode, int mask) return posix_acl_permission(inode, acl, mask & ~MAY_NOT_BLOCK); } - acl = get_cached_acl(inode, ACL_TYPE_ACCESS); - - /* - * A filesystem can force a ACL callback by just never filling the - * ACL cache. But normally you'd fill the cache either at inode - * instantiation time, or on the first ->get_acl call. - * - * If the filesystem doesn't have a get_acl() function at all, we'll - * just create the negative cache entry. - */ - if (acl == ACL_NOT_CACHED) { - if (inode->i_op->get_acl) { - acl = inode->i_op->get_acl(inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl)) - return PTR_ERR(acl); - } else { - set_cached_acl(inode, ACL_TYPE_ACCESS, NULL); - return -EAGAIN; - } - } - + acl = get_acl(inode, ACL_TYPE_ACCESS); + if (IS_ERR(acl)) + return PTR_ERR(acl); if (acl) { int error = posix_acl_permission(inode, acl, mask); posix_acl_release(acl); @@ -1098,7 +1109,7 @@ static bool __follow_mount_rcu(struct nameidata *nd, struct path *path, return false; if (!d_mountpoint(path->dentry)) - break; + return true; mounted = __lookup_mnt(path->mnt, path->dentry); if (!mounted) @@ -1114,20 +1125,7 @@ static bool __follow_mount_rcu(struct nameidata *nd, struct path *path, */ *inode = path->dentry->d_inode; } - return true; -} - -static void follow_mount_rcu(struct nameidata *nd) -{ - while (d_mountpoint(nd->path.dentry)) { - struct mount *mounted; - mounted = __lookup_mnt(nd->path.mnt, nd->path.dentry); - if (!mounted) - break; - nd->path.mnt = &mounted->mnt; - nd->path.dentry = mounted->mnt.mnt_root; - nd->seq = read_seqcount_begin(&nd->path.dentry->d_seq); - } + return read_seqretry(&mount_lock, nd->m_seq); } static int follow_dotdot_rcu(struct nameidata *nd) @@ -1155,7 +1153,17 @@ static int follow_dotdot_rcu(struct nameidata *nd) break; nd->seq = read_seqcount_begin(&nd->path.dentry->d_seq); } - follow_mount_rcu(nd); + while (d_mountpoint(nd->path.dentry)) { + struct mount *mounted; + mounted = __lookup_mnt(nd->path.mnt, nd->path.dentry); + if (!mounted) + break; + nd->path.mnt = &mounted->mnt; + nd->path.dentry = mounted->mnt.mnt_root; + nd->seq = read_seqcount_begin(&nd->path.dentry->d_seq); + if (!read_seqretry(&mount_lock, nd->m_seq)) + goto failed; + } nd->inode = nd->path.dentry->d_inode; return 0; @@ -1788,7 +1796,7 @@ static int link_path_walk(const char *name, struct nameidata *nd) if (err) return err; } - if (!d_is_directory(nd->path.dentry)) { + if (!d_can_lookup(nd->path.dentry)) { err = -ENOTDIR; break; } @@ -1809,7 +1817,7 @@ static int path_init(int dfd, const char *name, unsigned int flags, struct dentry *root = nd->root.dentry; struct inode *inode = root->d_inode; if (*name) { - if (!d_is_directory(root)) + if (!d_can_lookup(root)) return -ENOTDIR; retval = inode_permission(inode, MAY_EXEC); if (retval) @@ -1865,7 +1873,7 @@ static int path_init(int dfd, const char *name, unsigned int flags, dentry = f.file->f_path.dentry; if (*name) { - if (!d_is_directory(dentry)) { + if (!d_can_lookup(dentry)) { fdput(f); return -ENOTDIR; } @@ -1873,7 +1881,7 @@ static int path_init(int dfd, const char *name, unsigned int flags, nd->path = f.file->f_path; if (flags & LOOKUP_RCU) { - if (f.need_put) + if (f.flags & FDPUT_FPUT) *fp = f.file; nd->seq = __read_seqcount_begin(&nd->path.dentry->d_seq); rcu_read_lock(); @@ -1947,7 +1955,7 @@ static int path_lookupat(int dfd, const char *name, err = complete_walk(nd); if (!err && nd->flags & LOOKUP_DIRECTORY) { - if (!d_is_directory(nd->path.dentry)) { + if (!d_can_lookup(nd->path.dentry)) { path_put(&nd->path); err = -ENOTDIR; } @@ -2406,11 +2414,11 @@ static int may_delete(struct inode *dir, struct dentry *victim, bool isdir) IS_IMMUTABLE(inode) || IS_SWAPFILE(inode)) return -EPERM; if (isdir) { - if (!d_is_directory(victim) && !d_is_autodir(victim)) + if (!d_is_dir(victim)) return -ENOTDIR; if (IS_ROOT(victim)) return -EBUSY; - } else if (d_is_directory(victim) || d_is_autodir(victim)) + } else if (d_is_dir(victim)) return -EISDIR; if (IS_DEADDIR(dir)) return -ENOENT; @@ -2561,7 +2569,7 @@ static int handle_truncate(struct file *filp) /* * Refuse to truncate files with mandatory locks held on them. */ - error = locks_verify_locked(inode); + error = locks_verify_locked(filp); if (!error) error = security_path_truncate(path); if (!error) { @@ -3008,11 +3016,10 @@ finish_open: } audit_inode(name, nd->path.dentry, 0); error = -EISDIR; - if ((open_flag & O_CREAT) && - (d_is_directory(nd->path.dentry) || d_is_autodir(nd->path.dentry))) + if ((open_flag & O_CREAT) && d_is_dir(nd->path.dentry)) goto out; error = -ENOTDIR; - if ((nd->flags & LOOKUP_DIRECTORY) && !d_is_directory(nd->path.dentry)) + if ((nd->flags & LOOKUP_DIRECTORY) && !d_can_lookup(nd->path.dentry)) goto out; if (!S_ISREG(nd->inode->i_mode)) will_truncate = false; @@ -3736,7 +3743,7 @@ exit1: slashes: if (d_is_negative(dentry)) error = -ENOENT; - else if (d_is_directory(dentry) || d_is_autodir(dentry)) + else if (d_is_dir(dentry)) error = -EISDIR; else error = -ENOTDIR; @@ -3945,10 +3952,13 @@ out_dput: done_path_create(&new_path, new_dentry); if (delegated_inode) { error = break_deleg_wait(&delegated_inode); - if (!error) + if (!error) { + path_put(&old_path); goto retry; + } } if (retry_estale(error, how)) { + path_put(&old_path); how |= LOOKUP_REVAL; goto retry; } @@ -3963,7 +3973,28 @@ SYSCALL_DEFINE2(link, const char __user *, oldname, const char __user *, newname return sys_linkat(AT_FDCWD, oldname, AT_FDCWD, newname, 0); } -/* +/** + * vfs_rename - rename a filesystem object + * @old_dir: parent of source + * @old_dentry: source + * @new_dir: parent of destination + * @new_dentry: destination + * @delegated_inode: returns an inode needing a delegation break + * @flags: rename flags + * + * The caller must hold multiple mutexes--see lock_rename()). + * + * If vfs_rename discovers a delegation in need of breaking at either + * the source or destination, it will return -EWOULDBLOCK and return a + * reference to the inode in delegated_inode. The caller should then + * break the delegation and retry. Because breaking a delegation may + * take a long time, the caller should drop all locks before doing + * so. + * + * Alternatively, a caller may pass NULL for delegated_inode. This may + * be appropriate for callers that expect the underlying filesystem not + * to be NFS exported. + * * The worst of all namespace operations - renaming directory. "Perverted" * doesn't even start to describe it. Somebody in UCB had a heck of a trip... * Problems: @@ -3991,163 +4022,139 @@ SYSCALL_DEFINE2(link, const char __user *, oldname, const char __user *, newname * ->i_mutex on parents, which works but leads to some truly excessive * locking]. */ -static int vfs_rename_dir(struct inode *old_dir, struct dentry *old_dentry, - struct inode *new_dir, struct dentry *new_dentry) +int vfs_rename(struct inode *old_dir, struct dentry *old_dentry, + struct inode *new_dir, struct dentry *new_dentry, + struct inode **delegated_inode, unsigned int flags) { - int error = 0; + int error; + bool is_dir = d_is_dir(old_dentry); + const unsigned char *old_name; + struct inode *source = old_dentry->d_inode; struct inode *target = new_dentry->d_inode; + bool new_is_dir = false; unsigned max_links = new_dir->i_sb->s_max_links; + if (source == target) + return 0; + + error = may_delete(old_dir, old_dentry, is_dir); + if (error) + return error; + + if (!target) { + error = may_create(new_dir, new_dentry); + } else { + new_is_dir = d_is_dir(new_dentry); + + if (!(flags & RENAME_EXCHANGE)) + error = may_delete(new_dir, new_dentry, is_dir); + else + error = may_delete(new_dir, new_dentry, new_is_dir); + } + if (error) + return error; + + if (!old_dir->i_op->rename) + return -EPERM; + + if (flags && !old_dir->i_op->rename2) + return -EINVAL; + /* * If we are going to change the parent - check write permissions, * we'll need to flip '..'. */ if (new_dir != old_dir) { - error = inode_permission(old_dentry->d_inode, MAY_WRITE); - if (error) - return error; + if (is_dir) { + error = inode_permission(source, MAY_WRITE); + if (error) + return error; + } + if ((flags & RENAME_EXCHANGE) && new_is_dir) { + error = inode_permission(target, MAY_WRITE); + if (error) + return error; + } } - error = security_inode_rename(old_dir, old_dentry, new_dir, new_dentry); + error = security_inode_rename(old_dir, old_dentry, new_dir, new_dentry, + flags); if (error) return error; + old_name = fsnotify_oldname_init(old_dentry->d_name.name); dget(new_dentry); - if (target) + if (!is_dir || (flags & RENAME_EXCHANGE)) + lock_two_nondirectories(source, target); + else if (target) mutex_lock(&target->i_mutex); error = -EBUSY; if (d_mountpoint(old_dentry) || d_mountpoint(new_dentry)) goto out; - error = -EMLINK; - if (max_links && !target && new_dir != old_dir && - new_dir->i_nlink >= max_links) - goto out; - - if (target) + if (max_links && new_dir != old_dir) { + error = -EMLINK; + if (is_dir && !new_is_dir && new_dir->i_nlink >= max_links) + goto out; + if ((flags & RENAME_EXCHANGE) && !is_dir && new_is_dir && + old_dir->i_nlink >= max_links) + goto out; + } + if (is_dir && !(flags & RENAME_EXCHANGE) && target) shrink_dcache_parent(new_dentry); - error = old_dir->i_op->rename(old_dir, old_dentry, new_dir, new_dentry); - if (error) - goto out; - - if (target) { - target->i_flags |= S_DEAD; - dont_mount(new_dentry); + if (!is_dir) { + error = try_break_deleg(source, delegated_inode); + if (error) + goto out; } -out: - if (target) - mutex_unlock(&target->i_mutex); - dput(new_dentry); - if (!error) - if (!(old_dir->i_sb->s_type->fs_flags & FS_RENAME_DOES_D_MOVE)) - d_move(old_dentry,new_dentry); - return error; -} - -static int vfs_rename_other(struct inode *old_dir, struct dentry *old_dentry, - struct inode *new_dir, struct dentry *new_dentry, - struct inode **delegated_inode) -{ - struct inode *target = new_dentry->d_inode; - struct inode *source = old_dentry->d_inode; - int error; - - error = security_inode_rename(old_dir, old_dentry, new_dir, new_dentry); - if (error) - return error; - - dget(new_dentry); - lock_two_nondirectories(source, target); - - error = -EBUSY; - if (d_mountpoint(old_dentry)||d_mountpoint(new_dentry)) - goto out; - - error = try_break_deleg(source, delegated_inode); - if (error) - goto out; - if (target) { + if (target && !new_is_dir) { error = try_break_deleg(target, delegated_inode); if (error) goto out; } - error = old_dir->i_op->rename(old_dir, old_dentry, new_dir, new_dentry); + if (!flags) { + error = old_dir->i_op->rename(old_dir, old_dentry, + new_dir, new_dentry); + } else { + error = old_dir->i_op->rename2(old_dir, old_dentry, + new_dir, new_dentry, flags); + } if (error) goto out; - if (target) + if (!(flags & RENAME_EXCHANGE) && target) { + if (is_dir) + target->i_flags |= S_DEAD; dont_mount(new_dentry); - if (!(old_dir->i_sb->s_type->fs_flags & FS_RENAME_DOES_D_MOVE)) - d_move(old_dentry, new_dentry); + } + if (!(old_dir->i_sb->s_type->fs_flags & FS_RENAME_DOES_D_MOVE)) { + if (!(flags & RENAME_EXCHANGE)) + d_move(old_dentry, new_dentry); + else + d_exchange(old_dentry, new_dentry); + } out: - unlock_two_nondirectories(source, target); + if (!is_dir || (flags & RENAME_EXCHANGE)) + unlock_two_nondirectories(source, target); + else if (target) + mutex_unlock(&target->i_mutex); dput(new_dentry); - return error; -} - -/** - * vfs_rename - rename a filesystem object - * @old_dir: parent of source - * @old_dentry: source - * @new_dir: parent of destination - * @new_dentry: destination - * @delegated_inode: returns an inode needing a delegation break - * - * The caller must hold multiple mutexes--see lock_rename()). - * - * If vfs_rename discovers a delegation in need of breaking at either - * the source or destination, it will return -EWOULDBLOCK and return a - * reference to the inode in delegated_inode. The caller should then - * break the delegation and retry. Because breaking a delegation may - * take a long time, the caller should drop all locks before doing - * so. - * - * Alternatively, a caller may pass NULL for delegated_inode. This may - * be appropriate for callers that expect the underlying filesystem not - * to be NFS exported. - */ -int vfs_rename(struct inode *old_dir, struct dentry *old_dentry, - struct inode *new_dir, struct dentry *new_dentry, - struct inode **delegated_inode) -{ - int error; - int is_dir = d_is_directory(old_dentry) || d_is_autodir(old_dentry); - const unsigned char *old_name; - - if (old_dentry->d_inode == new_dentry->d_inode) - return 0; - - error = may_delete(old_dir, old_dentry, is_dir); - if (error) - return error; - - if (!new_dentry->d_inode) - error = may_create(new_dir, new_dentry); - else - error = may_delete(new_dir, new_dentry, is_dir); - if (error) - return error; - - if (!old_dir->i_op->rename) - return -EPERM; - - old_name = fsnotify_oldname_init(old_dentry->d_name.name); - - if (is_dir) - error = vfs_rename_dir(old_dir,old_dentry,new_dir,new_dentry); - else - error = vfs_rename_other(old_dir,old_dentry,new_dir,new_dentry,delegated_inode); - if (!error) + if (!error) { fsnotify_move(old_dir, new_dir, old_name, is_dir, - new_dentry->d_inode, old_dentry); + !(flags & RENAME_EXCHANGE) ? target : NULL, old_dentry); + if (flags & RENAME_EXCHANGE) { + fsnotify_move(new_dir, old_dir, old_dentry->d_name.name, + new_is_dir, NULL, new_dentry); + } + } fsnotify_oldname_free(old_name); return error; } -SYSCALL_DEFINE4(renameat, int, olddfd, const char __user *, oldname, - int, newdfd, const char __user *, newname) +SYSCALL_DEFINE5(renameat2, int, olddfd, const char __user *, oldname, + int, newdfd, const char __user *, newname, unsigned int, flags) { struct dentry *old_dir, *new_dir; struct dentry *old_dentry, *new_dentry; @@ -4159,6 +4166,13 @@ SYSCALL_DEFINE4(renameat, int, olddfd, const char __user *, oldname, unsigned int lookup_flags = 0; bool should_retry = false; int error; + + if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE)) + return -EINVAL; + + if ((flags & RENAME_NOREPLACE) && (flags & RENAME_EXCHANGE)) + return -EINVAL; + retry: from = user_path_parent(olddfd, oldname, &oldnd, lookup_flags); if (IS_ERR(from)) { @@ -4182,6 +4196,8 @@ retry: goto exit2; new_dir = newnd.path.dentry; + if (flags & RENAME_NOREPLACE) + error = -EEXIST; if (newnd.last_type != LAST_NORM) goto exit2; @@ -4191,7 +4207,8 @@ retry: oldnd.flags &= ~LOOKUP_PARENT; newnd.flags &= ~LOOKUP_PARENT; - newnd.flags |= LOOKUP_RENAME_TARGET; + if (!(flags & RENAME_EXCHANGE)) + newnd.flags |= LOOKUP_RENAME_TARGET; retry_deleg: trap = lock_rename(new_dir, old_dir); @@ -4204,34 +4221,49 @@ retry_deleg: error = -ENOENT; if (d_is_negative(old_dentry)) goto exit4; + new_dentry = lookup_hash(&newnd); + error = PTR_ERR(new_dentry); + if (IS_ERR(new_dentry)) + goto exit4; + error = -EEXIST; + if ((flags & RENAME_NOREPLACE) && d_is_positive(new_dentry)) + goto exit5; + if (flags & RENAME_EXCHANGE) { + error = -ENOENT; + if (d_is_negative(new_dentry)) + goto exit5; + + if (!d_is_dir(new_dentry)) { + error = -ENOTDIR; + if (newnd.last.name[newnd.last.len]) + goto exit5; + } + } /* unless the source is a directory trailing slashes give -ENOTDIR */ - if (!d_is_directory(old_dentry) && !d_is_autodir(old_dentry)) { + if (!d_is_dir(old_dentry)) { error = -ENOTDIR; if (oldnd.last.name[oldnd.last.len]) - goto exit4; - if (newnd.last.name[newnd.last.len]) - goto exit4; + goto exit5; + if (!(flags & RENAME_EXCHANGE) && newnd.last.name[newnd.last.len]) + goto exit5; } /* source should not be ancestor of target */ error = -EINVAL; if (old_dentry == trap) - goto exit4; - new_dentry = lookup_hash(&newnd); - error = PTR_ERR(new_dentry); - if (IS_ERR(new_dentry)) - goto exit4; + goto exit5; /* target should not be an ancestor of source */ - error = -ENOTEMPTY; + if (!(flags & RENAME_EXCHANGE)) + error = -ENOTEMPTY; if (new_dentry == trap) goto exit5; error = security_path_rename(&oldnd.path, old_dentry, - &newnd.path, new_dentry); + &newnd.path, new_dentry, flags); if (error) goto exit5; error = vfs_rename(old_dir->d_inode, old_dentry, - new_dir->d_inode, new_dentry, - &delegated_inode); + new_dir->d_inode, new_dentry, + &delegated_inode, flags); exit5: dput(new_dentry); exit4: @@ -4261,9 +4293,15 @@ exit: return error; } +SYSCALL_DEFINE4(renameat, int, olddfd, const char __user *, oldname, + int, newdfd, const char __user *, newname) +{ + return sys_renameat2(olddfd, oldname, newdfd, newname, 0); +} + SYSCALL_DEFINE2(rename, const char __user *, oldname, const char __user *, newname) { - return sys_renameat(AT_FDCWD, oldname, AT_FDCWD, newname); + return sys_renameat2(AT_FDCWD, oldname, AT_FDCWD, newname, 0); } int vfs_readlink(struct dentry *dentry, char __user *buffer, int buflen, const char *link) diff --git a/fs/namespace.c b/fs/namespace.c index be32ebccdeb1..2ffc5a2905d4 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -23,11 +23,34 @@ #include <linux/uaccess.h> #include <linux/proc_ns.h> #include <linux/magic.h> +#include <linux/bootmem.h> #include "pnode.h" #include "internal.h" -#define HASH_SHIFT ilog2(PAGE_SIZE / sizeof(struct list_head)) -#define HASH_SIZE (1UL << HASH_SHIFT) +static unsigned int m_hash_mask __read_mostly; +static unsigned int m_hash_shift __read_mostly; +static unsigned int mp_hash_mask __read_mostly; +static unsigned int mp_hash_shift __read_mostly; + +static __initdata unsigned long mhash_entries; +static int __init set_mhash_entries(char *str) +{ + if (!str) + return 0; + mhash_entries = simple_strtoul(str, &str, 0); + return 1; +} +__setup("mhash_entries=", set_mhash_entries); + +static __initdata unsigned long mphash_entries; +static int __init set_mphash_entries(char *str) +{ + if (!str) + return 0; + mphash_entries = simple_strtoul(str, &str, 0); + return 1; +} +__setup("mphash_entries=", set_mphash_entries); static int event; static DEFINE_IDA(mnt_id_ida); @@ -36,8 +59,8 @@ static DEFINE_SPINLOCK(mnt_id_lock); static int mnt_id_start = 0; static int mnt_group_start = 1; -static struct list_head *mount_hashtable __read_mostly; -static struct list_head *mountpoint_hashtable __read_mostly; +static struct hlist_head *mount_hashtable __read_mostly; +static struct hlist_head *mountpoint_hashtable __read_mostly; static struct kmem_cache *mnt_cache __read_mostly; static DECLARE_RWSEM(namespace_sem); @@ -55,12 +78,19 @@ EXPORT_SYMBOL_GPL(fs_kobj); */ __cacheline_aligned_in_smp DEFINE_SEQLOCK(mount_lock); -static inline unsigned long hash(struct vfsmount *mnt, struct dentry *dentry) +static inline struct hlist_head *m_hash(struct vfsmount *mnt, struct dentry *dentry) { unsigned long tmp = ((unsigned long)mnt / L1_CACHE_BYTES); tmp += ((unsigned long)dentry / L1_CACHE_BYTES); - tmp = tmp + (tmp >> HASH_SHIFT); - return tmp & (HASH_SIZE - 1); + tmp = tmp + (tmp >> m_hash_shift); + return &mount_hashtable[tmp & m_hash_mask]; +} + +static inline struct hlist_head *mp_hash(struct dentry *dentry) +{ + unsigned long tmp = ((unsigned long)dentry / L1_CACHE_BYTES); + tmp = tmp + (tmp >> mp_hash_shift); + return &mountpoint_hashtable[tmp & mp_hash_mask]; } /* @@ -187,7 +217,7 @@ static struct mount *alloc_vfsmnt(const char *name) mnt->mnt_writers = 0; #endif - INIT_LIST_HEAD(&mnt->mnt_hash); + INIT_HLIST_NODE(&mnt->mnt_hash); INIT_LIST_HEAD(&mnt->mnt_child); INIT_LIST_HEAD(&mnt->mnt_mounts); INIT_LIST_HEAD(&mnt->mnt_list); @@ -575,10 +605,10 @@ bool legitimize_mnt(struct vfsmount *bastard, unsigned seq) */ struct mount *__lookup_mnt(struct vfsmount *mnt, struct dentry *dentry) { - struct list_head *head = mount_hashtable + hash(mnt, dentry); + struct hlist_head *head = m_hash(mnt, dentry); struct mount *p; - list_for_each_entry_rcu(p, head, mnt_hash) + hlist_for_each_entry_rcu(p, head, mnt_hash) if (&p->mnt_parent->mnt == mnt && p->mnt_mountpoint == dentry) return p; return NULL; @@ -590,13 +620,17 @@ struct mount *__lookup_mnt(struct vfsmount *mnt, struct dentry *dentry) */ struct mount *__lookup_mnt_last(struct vfsmount *mnt, struct dentry *dentry) { - struct list_head *head = mount_hashtable + hash(mnt, dentry); - struct mount *p; - - list_for_each_entry_reverse(p, head, mnt_hash) - if (&p->mnt_parent->mnt == mnt && p->mnt_mountpoint == dentry) - return p; - return NULL; + struct mount *p, *res; + res = p = __lookup_mnt(mnt, dentry); + if (!p) + goto out; + hlist_for_each_entry_continue(p, mnt_hash) { + if (&p->mnt_parent->mnt != mnt || p->mnt_mountpoint != dentry) + break; + res = p; + } +out: + return res; } /* @@ -633,11 +667,11 @@ struct vfsmount *lookup_mnt(struct path *path) static struct mountpoint *new_mountpoint(struct dentry *dentry) { - struct list_head *chain = mountpoint_hashtable + hash(NULL, dentry); + struct hlist_head *chain = mp_hash(dentry); struct mountpoint *mp; int ret; - list_for_each_entry(mp, chain, m_hash) { + hlist_for_each_entry(mp, chain, m_hash) { if (mp->m_dentry == dentry) { /* might be worth a WARN_ON() */ if (d_unlinked(dentry)) @@ -659,7 +693,7 @@ static struct mountpoint *new_mountpoint(struct dentry *dentry) mp->m_dentry = dentry; mp->m_count = 1; - list_add(&mp->m_hash, chain); + hlist_add_head(&mp->m_hash, chain); return mp; } @@ -670,7 +704,7 @@ static void put_mountpoint(struct mountpoint *mp) spin_lock(&dentry->d_lock); dentry->d_flags &= ~DCACHE_MOUNTED; spin_unlock(&dentry->d_lock); - list_del(&mp->m_hash); + hlist_del(&mp->m_hash); kfree(mp); } } @@ -712,7 +746,7 @@ static void detach_mnt(struct mount *mnt, struct path *old_path) mnt->mnt_parent = mnt; mnt->mnt_mountpoint = mnt->mnt.mnt_root; list_del_init(&mnt->mnt_child); - list_del_init(&mnt->mnt_hash); + hlist_del_init_rcu(&mnt->mnt_hash); put_mountpoint(mnt->mnt_mp); mnt->mnt_mp = NULL; } @@ -739,15 +773,14 @@ static void attach_mnt(struct mount *mnt, struct mountpoint *mp) { mnt_set_mountpoint(parent, mp, mnt); - list_add_tail(&mnt->mnt_hash, mount_hashtable + - hash(&parent->mnt, mp->m_dentry)); + hlist_add_head_rcu(&mnt->mnt_hash, m_hash(&parent->mnt, mp->m_dentry)); list_add_tail(&mnt->mnt_child, &parent->mnt_mounts); } /* * vfsmount lock must be held for write */ -static void commit_tree(struct mount *mnt) +static void commit_tree(struct mount *mnt, struct mount *shadows) { struct mount *parent = mnt->mnt_parent; struct mount *m; @@ -762,8 +795,11 @@ static void commit_tree(struct mount *mnt) list_splice(&head, n->list.prev); - list_add_tail(&mnt->mnt_hash, mount_hashtable + - hash(&parent->mnt, mnt->mnt_mountpoint)); + if (shadows) + hlist_add_after_rcu(&shadows->mnt_hash, &mnt->mnt_hash); + else + hlist_add_head_rcu(&mnt->mnt_hash, + m_hash(&parent->mnt, mnt->mnt_mountpoint)); list_add_tail(&mnt->mnt_child, &parent->mnt_mounts); touch_mnt_namespace(n); } @@ -1153,26 +1189,28 @@ int may_umount(struct vfsmount *mnt) EXPORT_SYMBOL(may_umount); -static LIST_HEAD(unmounted); /* protected by namespace_sem */ +static HLIST_HEAD(unmounted); /* protected by namespace_sem */ static void namespace_unlock(void) { struct mount *mnt; - LIST_HEAD(head); + struct hlist_head head = unmounted; - if (likely(list_empty(&unmounted))) { + if (likely(hlist_empty(&head))) { up_write(&namespace_sem); return; } - list_splice_init(&unmounted, &head); + head.first->pprev = &head.first; + INIT_HLIST_HEAD(&unmounted); + up_write(&namespace_sem); synchronize_rcu(); - while (!list_empty(&head)) { - mnt = list_first_entry(&head, struct mount, mnt_hash); - list_del_init(&mnt->mnt_hash); + while (!hlist_empty(&head)) { + mnt = hlist_entry(head.first, struct mount, mnt_hash); + hlist_del_init(&mnt->mnt_hash); if (mnt->mnt_ex_mountpoint.mnt) path_put(&mnt->mnt_ex_mountpoint); mntput(&mnt->mnt); @@ -1193,16 +1231,19 @@ static inline void namespace_lock(void) */ void umount_tree(struct mount *mnt, int how) { - LIST_HEAD(tmp_list); + HLIST_HEAD(tmp_list); struct mount *p; + struct mount *last = NULL; - for (p = mnt; p; p = next_mnt(p, mnt)) - list_move(&p->mnt_hash, &tmp_list); + for (p = mnt; p; p = next_mnt(p, mnt)) { + hlist_del_init_rcu(&p->mnt_hash); + hlist_add_head(&p->mnt_hash, &tmp_list); + } if (how) propagate_umount(&tmp_list); - list_for_each_entry(p, &tmp_list, mnt_hash) { + hlist_for_each_entry(p, &tmp_list, mnt_hash) { list_del_init(&p->mnt_expire); list_del_init(&p->mnt_list); __touch_mnt_namespace(p->mnt_ns); @@ -1220,8 +1261,13 @@ void umount_tree(struct mount *mnt, int how) p->mnt_mp = NULL; } change_mnt_propagation(p, MS_PRIVATE); + last = p; + } + if (last) { + last->mnt_hash.next = unmounted.first; + unmounted.first = tmp_list.first; + unmounted.first->pprev = &unmounted.first; } - list_splice(&tmp_list, &unmounted); } static void shrink_submounts(struct mount *mnt); @@ -1605,24 +1651,23 @@ static int attach_recursive_mnt(struct mount *source_mnt, struct mountpoint *dest_mp, struct path *parent_path) { - LIST_HEAD(tree_list); + HLIST_HEAD(tree_list); struct mount *child, *p; + struct hlist_node *n; int err; if (IS_MNT_SHARED(dest_mnt)) { err = invent_group_ids(source_mnt, true); if (err) goto out; - } - err = propagate_mnt(dest_mnt, dest_mp, source_mnt, &tree_list); - if (err) - goto out_cleanup_ids; - - lock_mount_hash(); - - if (IS_MNT_SHARED(dest_mnt)) { + err = propagate_mnt(dest_mnt, dest_mp, source_mnt, &tree_list); + if (err) + goto out_cleanup_ids; + lock_mount_hash(); for (p = source_mnt; p; p = next_mnt(p, source_mnt)) set_mnt_shared(p); + } else { + lock_mount_hash(); } if (parent_path) { detach_mnt(source_mnt, parent_path); @@ -1630,20 +1675,22 @@ static int attach_recursive_mnt(struct mount *source_mnt, touch_mnt_namespace(source_mnt->mnt_ns); } else { mnt_set_mountpoint(dest_mnt, dest_mp, source_mnt); - commit_tree(source_mnt); + commit_tree(source_mnt, NULL); } - list_for_each_entry_safe(child, p, &tree_list, mnt_hash) { - list_del_init(&child->mnt_hash); - commit_tree(child); + hlist_for_each_entry_safe(child, n, &tree_list, mnt_hash) { + struct mount *q; + hlist_del_init(&child->mnt_hash); + q = __lookup_mnt_last(&child->mnt_parent->mnt, + child->mnt_mountpoint); + commit_tree(child, q); } unlock_mount_hash(); return 0; out_cleanup_ids: - if (IS_MNT_SHARED(dest_mnt)) - cleanup_group_ids(source_mnt, NULL); + cleanup_group_ids(source_mnt, NULL); out: return err; } @@ -2777,18 +2824,26 @@ void __init mnt_init(void) mnt_cache = kmem_cache_create("mnt_cache", sizeof(struct mount), 0, SLAB_HWCACHE_ALIGN | SLAB_PANIC, NULL); - mount_hashtable = (struct list_head *)__get_free_page(GFP_ATOMIC); - mountpoint_hashtable = (struct list_head *)__get_free_page(GFP_ATOMIC); + mount_hashtable = alloc_large_system_hash("Mount-cache", + sizeof(struct hlist_head), + mhash_entries, 19, + 0, + &m_hash_shift, &m_hash_mask, 0, 0); + mountpoint_hashtable = alloc_large_system_hash("Mountpoint-cache", + sizeof(struct hlist_head), + mphash_entries, 19, + 0, + &mp_hash_shift, &mp_hash_mask, 0, 0); if (!mount_hashtable || !mountpoint_hashtable) panic("Failed to allocate mount hash table\n"); - printk(KERN_INFO "Mount-cache hash table entries: %lu\n", HASH_SIZE); + for (u = 0; u <= m_hash_mask; u++) + INIT_HLIST_HEAD(&mount_hashtable[u]); + for (u = 0; u <= mp_hash_mask; u++) + INIT_HLIST_HEAD(&mountpoint_hashtable[u]); - for (u = 0; u < HASH_SIZE; u++) - INIT_LIST_HEAD(&mount_hashtable[u]); - for (u = 0; u < HASH_SIZE; u++) - INIT_LIST_HEAD(&mountpoint_hashtable[u]); + kernfs_init(); err = sysfs_init(); if (err) diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c index c320ac52353e..08b8ea8c353e 100644 --- a/fs/ncpfs/dir.c +++ b/fs/ncpfs/dir.c @@ -339,7 +339,7 @@ ncp_lookup_validate(struct dentry *dentry, unsigned int flags) if (val) goto finished; - DDPRINTK("ncp_lookup_validate: %pd2 not valid, age=%ld, server lookup\n", + ncp_dbg(2, "%pd2 not valid, age=%ld, server lookup\n", dentry, NCP_GET_AGE(dentry)); len = sizeof(__name); @@ -358,7 +358,7 @@ ncp_lookup_validate(struct dentry *dentry, unsigned int flags) res = ncp_obtain_info(server, dir, __name, &(finfo.i)); } finfo.volume = finfo.i.volNumber; - DDPRINTK("ncp_lookup_validate: looked for %pd/%s, res=%d\n", + ncp_dbg(2, "looked for %pd/%s, res=%d\n", dentry->d_parent, __name, res); /* * If we didn't find it, or if it has a different dirEntNum to @@ -372,14 +372,14 @@ ncp_lookup_validate(struct dentry *dentry, unsigned int flags) ncp_new_dentry(dentry); val=1; } else - DDPRINTK("ncp_lookup_validate: found, but dirEntNum changed\n"); + ncp_dbg(2, "found, but dirEntNum changed\n"); ncp_update_inode2(inode, &finfo); mutex_unlock(&inode->i_mutex); } finished: - DDPRINTK("ncp_lookup_validate: result=%d\n", val); + ncp_dbg(2, "result=%d\n", val); dput(parent); return val; } @@ -453,8 +453,7 @@ static int ncp_readdir(struct file *file, struct dir_context *ctx) ctl.page = NULL; ctl.cache = NULL; - DDPRINTK("ncp_readdir: reading %pD2, pos=%d\n", file, - (int) ctx->pos); + ncp_dbg(2, "reading %pD2, pos=%d\n", file, (int)ctx->pos); result = -EIO; /* Do not generate '.' and '..' when server is dead. */ @@ -697,8 +696,7 @@ ncp_read_volume_list(struct file *file, struct dir_context *ctx, struct ncp_entry_info entry; int i; - DPRINTK("ncp_read_volume_list: pos=%ld\n", - (unsigned long) ctx->pos); + ncp_dbg(1, "pos=%ld\n", (unsigned long)ctx->pos); for (i = 0; i < NCP_NUMBER_OF_VOLUMES; i++) { int inval_dentry; @@ -708,12 +706,11 @@ ncp_read_volume_list(struct file *file, struct dir_context *ctx, if (!strlen(info.volume_name)) continue; - DPRINTK("ncp_read_volume_list: found vol: %s\n", - info.volume_name); + ncp_dbg(1, "found vol: %s\n", info.volume_name); if (ncp_lookup_volume(server, info.volume_name, &entry.i)) { - DPRINTK("ncpfs: could not lookup vol %s\n", + ncp_dbg(1, "could not lookup vol %s\n", info.volume_name); continue; } @@ -738,14 +735,13 @@ ncp_do_readdir(struct file *file, struct dir_context *ctx, int more; size_t bufsize; - DPRINTK("ncp_do_readdir: %pD2, fpos=%ld\n", file, - (unsigned long) ctx->pos); - PPRINTK("ncp_do_readdir: init %pD, volnum=%d, dirent=%u\n", - file, NCP_FINFO(dir)->volNumber, NCP_FINFO(dir)->dirEntNum); + ncp_dbg(1, "%pD2, fpos=%ld\n", file, (unsigned long)ctx->pos); + ncp_vdbg("init %pD, volnum=%d, dirent=%u\n", + file, NCP_FINFO(dir)->volNumber, NCP_FINFO(dir)->dirEntNum); err = ncp_initialize_search(server, dir, &seq); if (err) { - DPRINTK("ncp_do_readdir: init failed, err=%d\n", err); + ncp_dbg(1, "init failed, err=%d\n", err); return; } /* We MUST NOT use server->buffer_size handshaked with server if we are @@ -808,8 +804,7 @@ int ncp_conn_logged_in(struct super_block *sb) goto out; result = -ENOENT; if (ncp_get_volume_root(server, __name, &volNumber, &dirEntNum, &DosDirNum)) { - PPRINTK("ncp_conn_logged_in: %s not found\n", - server->m.mounted_vol); + ncp_vdbg("%s not found\n", server->m.mounted_vol); goto out; } dent = sb->s_root; @@ -822,10 +817,10 @@ int ncp_conn_logged_in(struct super_block *sb) NCP_FINFO(ino)->DosDirNum = DosDirNum; result = 0; } else { - DPRINTK("ncpfs: sb->s_root->d_inode == NULL!\n"); + ncp_dbg(1, "sb->s_root->d_inode == NULL!\n"); } } else { - DPRINTK("ncpfs: sb->s_root == NULL!\n"); + ncp_dbg(1, "sb->s_root == NULL!\n"); } } else result = 0; @@ -846,7 +841,7 @@ static struct dentry *ncp_lookup(struct inode *dir, struct dentry *dentry, unsig if (!ncp_conn_valid(server)) goto finished; - PPRINTK("ncp_lookup: server lookup for %pd2\n", dentry); + ncp_vdbg("server lookup for %pd2\n", dentry); len = sizeof(__name); if (ncp_is_server_root(dir)) { @@ -854,15 +849,15 @@ static struct dentry *ncp_lookup(struct inode *dir, struct dentry *dentry, unsig dentry->d_name.len, 1); if (!res) res = ncp_lookup_volume(server, __name, &(finfo.i)); - if (!res) - ncp_update_known_namespace(server, finfo.i.volNumber, NULL); + if (!res) + ncp_update_known_namespace(server, finfo.i.volNumber, NULL); } else { res = ncp_io2vol(server, __name, &len, dentry->d_name.name, dentry->d_name.len, !ncp_preserve_case(dir)); if (!res) res = ncp_obtain_info(server, dir, __name, &(finfo.i)); } - PPRINTK("ncp_lookup: looked for %pd2, res=%d\n", dentry, res); + ncp_vdbg("looked for %pd2, res=%d\n", dentry, res); /* * If we didn't find an entry, make a negative dentry. */ @@ -886,7 +881,7 @@ add_entry: } finished: - PPRINTK("ncp_lookup: result=%d\n", error); + ncp_vdbg("result=%d\n", error); return ERR_PTR(error); } @@ -909,7 +904,7 @@ out: return error; out_close: - PPRINTK("ncp_instantiate: %pd2 failed, closing file\n", dentry); + ncp_vdbg("%pd2 failed, closing file\n", dentry); ncp_close_file(NCP_SERVER(dir), finfo->file_handle); goto out; } @@ -923,7 +918,7 @@ int ncp_create_new(struct inode *dir, struct dentry *dentry, umode_t mode, int opmode; __u8 __name[NCP_MAXPATHLEN + 1]; - PPRINTK("ncp_create_new: creating %pd2, mode=%hx\n", dentry, mode); + ncp_vdbg("creating %pd2, mode=%hx\n", dentry, mode); ncp_age_dentry(server, dentry); len = sizeof(__name); @@ -952,7 +947,7 @@ int ncp_create_new(struct inode *dir, struct dentry *dentry, umode_t mode, error = -ENAMETOOLONG; else if (result < 0) error = result; - DPRINTK("ncp_create: %pd2 failed\n", dentry); + ncp_dbg(1, "%pd2 failed\n", dentry); goto out; } opmode = O_WRONLY; @@ -985,7 +980,7 @@ static int ncp_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) int error, len; __u8 __name[NCP_MAXPATHLEN + 1]; - DPRINTK("ncp_mkdir: making %pd2\n", dentry); + ncp_dbg(1, "making %pd2\n", dentry); ncp_age_dentry(server, dentry); len = sizeof(__name); @@ -1022,7 +1017,7 @@ static int ncp_rmdir(struct inode *dir, struct dentry *dentry) int error, result, len; __u8 __name[NCP_MAXPATHLEN + 1]; - DPRINTK("ncp_rmdir: removing %pd2\n", dentry); + ncp_dbg(1, "removing %pd2\n", dentry); len = sizeof(__name); error = ncp_io2vol(server, __name, &len, dentry->d_name.name, @@ -1067,13 +1062,13 @@ static int ncp_unlink(struct inode *dir, struct dentry *dentry) int error; server = NCP_SERVER(dir); - DPRINTK("ncp_unlink: unlinking %pd2\n", dentry); + ncp_dbg(1, "unlinking %pd2\n", dentry); /* * Check whether to close the file ... */ if (inode) { - PPRINTK("ncp_unlink: closing file\n"); + ncp_vdbg("closing file\n"); ncp_make_closed(inode); } @@ -1087,7 +1082,7 @@ static int ncp_unlink(struct inode *dir, struct dentry *dentry) #endif switch (error) { case 0x00: - DPRINTK("ncp: removed %pd2\n", dentry); + ncp_dbg(1, "removed %pd2\n", dentry); break; case 0x85: case 0x8A: @@ -1120,7 +1115,7 @@ static int ncp_rename(struct inode *old_dir, struct dentry *old_dentry, int old_len, new_len; __u8 __old_name[NCP_MAXPATHLEN + 1], __new_name[NCP_MAXPATHLEN + 1]; - DPRINTK("ncp_rename: %pd2 to %pd2\n", old_dentry, new_dentry); + ncp_dbg(1, "%pd2 to %pd2\n", old_dentry, new_dentry); ncp_age_dentry(server, old_dentry); ncp_age_dentry(server, new_dentry); @@ -1150,8 +1145,8 @@ static int ncp_rename(struct inode *old_dir, struct dentry *old_dentry, #endif switch (error) { case 0x00: - DPRINTK("ncp renamed %pd -> %pd.\n", - old_dentry, new_dentry); + ncp_dbg(1, "renamed %pd -> %pd\n", + old_dentry, new_dentry); break; case 0x9E: error = -ENAMETOOLONG; @@ -1173,7 +1168,7 @@ static int ncp_mknod(struct inode * dir, struct dentry *dentry, if (!new_valid_dev(rdev)) return -EINVAL; if (ncp_is_nfs_extras(NCP_SERVER(dir), NCP_FINFO(dir)->volNumber)) { - DPRINTK(KERN_DEBUG "ncp_mknod: mode = 0%ho\n", mode); + ncp_dbg(1, "mode = 0%ho\n", mode); return ncp_create_new(dir, dentry, mode, rdev, 0); } return -EPERM; /* Strange, but true */ diff --git a/fs/ncpfs/file.c b/fs/ncpfs/file.c index 8f5074e1ecb9..77640a8bfb87 100644 --- a/fs/ncpfs/file.c +++ b/fs/ncpfs/file.c @@ -6,6 +6,8 @@ * */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <asm/uaccess.h> #include <linux/time.h> @@ -34,11 +36,11 @@ int ncp_make_open(struct inode *inode, int right) error = -EINVAL; if (!inode) { - printk(KERN_ERR "ncp_make_open: got NULL inode\n"); + pr_err("%s: got NULL inode\n", __func__); goto out; } - DPRINTK("ncp_make_open: opened=%d, volume # %u, dir entry # %u\n", + ncp_dbg(1, "opened=%d, volume # %u, dir entry # %u\n", atomic_read(&NCP_FINFO(inode)->opened), NCP_FINFO(inode)->volNumber, NCP_FINFO(inode)->dirEntNum); @@ -71,7 +73,7 @@ int ncp_make_open(struct inode *inode, int right) break; } if (result) { - PPRINTK("ncp_make_open: failed, result=%d\n", result); + ncp_vdbg("failed, result=%d\n", result); goto out_unlock; } /* @@ -83,7 +85,7 @@ int ncp_make_open(struct inode *inode, int right) } access = NCP_FINFO(inode)->access; - PPRINTK("ncp_make_open: file open, access=%x\n", access); + ncp_vdbg("file open, access=%x\n", access); if (access == right || access == O_RDWR) { atomic_inc(&NCP_FINFO(inode)->opened); error = 0; @@ -107,7 +109,7 @@ ncp_file_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) void* freepage; size_t freelen; - DPRINTK("ncp_file_read: enter %pd2\n", dentry); + ncp_dbg(1, "enter %pd2\n", dentry); pos = *ppos; @@ -124,7 +126,7 @@ ncp_file_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) error = ncp_make_open(inode, O_RDONLY); if (error) { - DPRINTK(KERN_ERR "ncp_file_read: open failed, error=%d\n", error); + ncp_dbg(1, "open failed, error=%d\n", error); return error; } @@ -165,7 +167,7 @@ ncp_file_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) file_accessed(file); - DPRINTK("ncp_file_read: exit %pd2\n", dentry); + ncp_dbg(1, "exit %pd2\n", dentry); outrel: ncp_inode_close(inode); return already_read ? already_read : error; @@ -182,7 +184,7 @@ ncp_file_write(struct file *file, const char __user *buf, size_t count, loff_t * int errno; void* bouncebuffer; - DPRINTK("ncp_file_write: enter %pd2\n", dentry); + ncp_dbg(1, "enter %pd2\n", dentry); if ((ssize_t) count < 0) return -EINVAL; pos = *ppos; @@ -211,7 +213,7 @@ ncp_file_write(struct file *file, const char __user *buf, size_t count, loff_t * return 0; errno = ncp_make_open(inode, O_WRONLY); if (errno) { - DPRINTK(KERN_ERR "ncp_file_write: open failed, error=%d\n", errno); + ncp_dbg(1, "open failed, error=%d\n", errno); return errno; } bufsize = NCP_SERVER(inode)->buffer_size; @@ -261,7 +263,7 @@ ncp_file_write(struct file *file, const char __user *buf, size_t count, loff_t * i_size_write(inode, pos); mutex_unlock(&inode->i_mutex); } - DPRINTK("ncp_file_write: exit %pd2\n", dentry); + ncp_dbg(1, "exit %pd2\n", dentry); outrel: ncp_inode_close(inode); return already_written ? already_written : errno; @@ -269,7 +271,7 @@ outrel: static int ncp_release(struct inode *inode, struct file *file) { if (ncp_make_closed(inode)) { - DPRINTK("ncp_release: failed to close\n"); + ncp_dbg(1, "failed to close\n"); } return 0; } diff --git a/fs/ncpfs/getopt.c b/fs/ncpfs/getopt.c index 0af3349de851..03ffde1f44d6 100644 --- a/fs/ncpfs/getopt.c +++ b/fs/ncpfs/getopt.c @@ -2,6 +2,8 @@ * getopt.c */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/kernel.h> #include <linux/string.h> @@ -46,8 +48,8 @@ int ncp_getopt(const char *caller, char **options, const struct ncp_option *opts if (opts->has_arg & OPT_NOPARAM) { return opts->val; } - printk(KERN_INFO "%s: the %s option requires an argument\n", - caller, token); + pr_info("%s: the %s option requires an argument\n", + caller, token); return -EINVAL; } if (opts->has_arg & OPT_INT) { @@ -57,18 +59,18 @@ int ncp_getopt(const char *caller, char **options, const struct ncp_option *opts if (!*v) { return opts->val; } - printk(KERN_INFO "%s: invalid numeric value in %s=%s\n", + pr_info("%s: invalid numeric value in %s=%s\n", caller, token, val); return -EDOM; } if (opts->has_arg & OPT_STRING) { return opts->val; } - printk(KERN_INFO "%s: unexpected argument %s to the %s option\n", + pr_info("%s: unexpected argument %s to the %s option\n", caller, val, token); return -EINVAL; } } - printk(KERN_INFO "%s: Unrecognized mount option %s\n", caller, token); + pr_info("%s: Unrecognized mount option %s\n", caller, token); return -EOPNOTSUPP; } diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c index 2cf2ebecb55f..81b4f643ecef 100644 --- a/fs/ncpfs/inode.c +++ b/fs/ncpfs/inode.c @@ -9,6 +9,8 @@ * */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/module.h> #include <asm/uaccess.h> @@ -99,6 +101,7 @@ static void destroy_inodecache(void) static int ncp_remount(struct super_block *sb, int *flags, char* data) { + sync_filesystem(sb); *flags |= MS_NODIRATIME; return 0; } @@ -132,7 +135,7 @@ void ncp_update_inode(struct inode *inode, struct ncp_entry_info *nwinfo) NCP_FINFO(inode)->access = nwinfo->access; memcpy(NCP_FINFO(inode)->file_handle, nwinfo->file_handle, sizeof(nwinfo->file_handle)); - DPRINTK("ncp_update_inode: updated %s, volnum=%d, dirent=%u\n", + ncp_dbg(1, "updated %s, volnum=%d, dirent=%u\n", nwinfo->i.entryName, NCP_FINFO(inode)->volNumber, NCP_FINFO(inode)->dirEntNum); } @@ -140,8 +143,7 @@ void ncp_update_inode(struct inode *inode, struct ncp_entry_info *nwinfo) static void ncp_update_dates(struct inode *inode, struct nw_info_struct *nwi) { /* NFS namespace mode overrides others if it's set. */ - DPRINTK(KERN_DEBUG "ncp_update_dates_and_mode: (%s) nfs.mode=0%o\n", - nwi->entryName, nwi->nfs.mode); + ncp_dbg(1, "(%s) nfs.mode=0%o\n", nwi->entryName, nwi->nfs.mode); if (nwi->nfs.mode) { /* XXX Security? */ inode->i_mode = nwi->nfs.mode; @@ -229,7 +231,7 @@ static void ncp_set_attr(struct inode *inode, struct ncp_entry_info *nwinfo) ncp_update_attrs(inode, nwinfo); - DDPRINTK("ncp_read_inode: inode->i_mode = %u\n", inode->i_mode); + ncp_dbg(2, "inode->i_mode = %u\n", inode->i_mode); set_nlink(inode, 1); inode->i_uid = server->m.uid; @@ -257,7 +259,7 @@ ncp_iget(struct super_block *sb, struct ncp_entry_info *info) struct inode *inode; if (info == NULL) { - printk(KERN_ERR "ncp_iget: info is NULL\n"); + pr_err("%s: info is NULL\n", __func__); return NULL; } @@ -289,23 +291,23 @@ ncp_iget(struct super_block *sb, struct ncp_entry_info *info) } insert_inode_hash(inode); } else - printk(KERN_ERR "ncp_iget: iget failed!\n"); + pr_err("%s: iget failed!\n", __func__); return inode; } static void ncp_evict_inode(struct inode *inode) { - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); if (S_ISDIR(inode->i_mode)) { - DDPRINTK("ncp_evict_inode: put directory %ld\n", inode->i_ino); + ncp_dbg(2, "put directory %ld\n", inode->i_ino); } if (ncp_make_closed(inode) != 0) { /* We can't do anything but complain. */ - printk(KERN_ERR "ncp_evict_inode: could not close\n"); + pr_err("%s: could not close\n", __func__); } } @@ -620,7 +622,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) now because of PATH_MAX changes.. */ if (server->m.time_out < 1) { server->m.time_out = 10; - printk(KERN_INFO "You need to recompile your ncpfs utils..\n"); + pr_info("You need to recompile your ncpfs utils..\n"); } server->m.time_out = server->m.time_out * HZ / 100; server->m.file_mode = (server->m.file_mode & S_IRWXUGO) | S_IFREG; @@ -681,7 +683,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) ncp_unlock_server(server); if (error < 0) goto out_rxbuf; - DPRINTK("ncp_fill_super: NCP_SBP(sb) = %x\n", (int) NCP_SBP(sb)); + ncp_dbg(1, "NCP_SBP(sb) = %p\n", NCP_SBP(sb)); error = -EMSGSIZE; /* -EREMOTESIDEINCOMPATIBLE */ #ifdef CONFIG_NCPFS_PACKET_SIGNING @@ -709,7 +711,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) if (ncp_negotiate_buffersize(server, default_bufsize, &(server->buffer_size)) != 0) goto out_disconnect; - DPRINTK("ncpfs: bufsize = %d\n", server->buffer_size); + ncp_dbg(1, "bufsize = %d\n", server->buffer_size); memset(&finfo, 0, sizeof(finfo)); finfo.i.attributes = aDIR; @@ -738,7 +740,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) root_inode = ncp_iget(sb, &finfo); if (!root_inode) goto out_disconnect; - DPRINTK("ncp_fill_super: root vol=%d\n", NCP_FINFO(root_inode)->volNumber); + ncp_dbg(1, "root vol=%d\n", NCP_FINFO(root_inode)->volNumber); sb->s_root = d_make_root(root_inode); if (!sb->s_root) goto out_disconnect; @@ -984,8 +986,7 @@ int ncp_notify_change(struct dentry *dentry, struct iattr *attr) if ((attr->ia_valid & ATTR_SIZE) != 0) { int written; - DPRINTK("ncpfs: trying to change size to %ld\n", - attr->ia_size); + ncp_dbg(1, "trying to change size to %llu\n", attr->ia_size); if ((result = ncp_make_open(inode, O_WRONLY)) < 0) { result = -EACCES; @@ -1071,7 +1072,7 @@ MODULE_ALIAS_FS("ncpfs"); static int __init init_ncp_fs(void) { int err; - DPRINTK("ncpfs: init_ncp_fs called\n"); + ncp_dbg(1, "called\n"); err = init_inodecache(); if (err) @@ -1088,7 +1089,7 @@ out1: static void __exit exit_ncp_fs(void) { - DPRINTK("ncpfs: exit_ncp_fs called\n"); + ncp_dbg(1, "called\n"); unregister_filesystem(&ncp_fs_type); destroy_inodecache(); } diff --git a/fs/ncpfs/ioctl.c b/fs/ncpfs/ioctl.c index 60426ccb3b65..d5659d96ee7f 100644 --- a/fs/ncpfs/ioctl.c +++ b/fs/ncpfs/ioctl.c @@ -41,7 +41,7 @@ ncp_get_fs_info(struct ncp_server * server, struct inode *inode, return -EFAULT; if (info.version != NCP_GET_FS_INFO_VERSION) { - DPRINTK("info.version invalid: %d\n", info.version); + ncp_dbg(1, "info.version invalid: %d\n", info.version); return -EINVAL; } /* TODO: info.addr = server->m.serv_addr; */ @@ -66,7 +66,7 @@ ncp_get_fs_info_v2(struct ncp_server * server, struct inode *inode, return -EFAULT; if (info2.version != NCP_GET_FS_INFO_VERSION_V2) { - DPRINTK("info.version invalid: %d\n", info2.version); + ncp_dbg(1, "info.version invalid: %d\n", info2.version); return -EINVAL; } info2.mounted_uid = from_kuid_munged(current_user_ns(), server->m.mounted_uid); @@ -132,7 +132,7 @@ ncp_get_compat_fs_info_v2(struct ncp_server * server, struct inode *inode, return -EFAULT; if (info2.version != NCP_GET_FS_INFO_VERSION_V2) { - DPRINTK("info.version invalid: %d\n", info2.version); + ncp_dbg(1, "info.version invalid: %d\n", info2.version); return -EINVAL; } info2.mounted_uid = from_kuid_munged(current_user_ns(), server->m.mounted_uid); @@ -308,8 +308,7 @@ static long __ncp_ioctl(struct inode *inode, unsigned int cmd, unsigned long arg else result = server->reply_size; ncp_unlock_server(server); - DPRINTK("ncp_ioctl: copy %d bytes\n", - result); + ncp_dbg(1, "copy %d bytes\n", result); if (result >= 0) if (copy_to_user(request.data, bouncebuffer, result)) result = -EFAULT; @@ -385,9 +384,9 @@ static long __ncp_ioctl(struct inode *inode, unsigned int cmd, unsigned long arg sr.namespace = server->name_space[sr.volNumber]; result = 0; } else - DPRINTK("ncpfs: s_root->d_inode==NULL\n"); + ncp_dbg(1, "s_root->d_inode==NULL\n"); } else - DPRINTK("ncpfs: s_root==NULL\n"); + ncp_dbg(1, "s_root==NULL\n"); } else { sr.volNumber = -1; sr.namespace = 0; @@ -440,11 +439,11 @@ static long __ncp_ioctl(struct inode *inode, unsigned int cmd, unsigned long arg NCP_FINFO(s_inode)->DosDirNum = dosde; server->root_setuped = 1; } else { - DPRINTK("ncpfs: s_root->d_inode==NULL\n"); + ncp_dbg(1, "s_root->d_inode==NULL\n"); result = -EIO; } } else { - DPRINTK("ncpfs: s_root==NULL\n"); + ncp_dbg(1, "s_root==NULL\n"); result = -EIO; } } diff --git a/fs/ncpfs/mmap.c b/fs/ncpfs/mmap.c index 3c5dd55d284c..b359d12eb359 100644 --- a/fs/ncpfs/mmap.c +++ b/fs/ncpfs/mmap.c @@ -107,7 +107,7 @@ int ncp_mmap(struct file *file, struct vm_area_struct *vma) { struct inode *inode = file_inode(file); - DPRINTK("ncp_mmap: called\n"); + ncp_dbg(1, "called\n"); if (!ncp_conn_valid(NCP_SERVER(inode))) return -EIO; diff --git a/fs/ncpfs/ncp_fs.h b/fs/ncpfs/ncp_fs.h index 31831afe1c3b..b9f69e1b1f43 100644 --- a/fs/ncpfs/ncp_fs.h +++ b/fs/ncpfs/ncp_fs.h @@ -2,30 +2,32 @@ #include "ncp_fs_i.h" #include "ncp_fs_sb.h" -/* define because it is easy to change PRINTK to {*}PRINTK */ -#define PRINTK(format, args...) printk(KERN_DEBUG format , ## args) - #undef NCPFS_PARANOIA #ifdef NCPFS_PARANOIA -#define PPRINTK(format, args...) PRINTK(format , ## args) +#define ncp_vdbg(fmt, ...) \ + pr_debug(fmt, ##__VA_ARGS__) #else -#define PPRINTK(format, args...) +#define ncp_vdbg(fmt, ...) \ +do { \ + if (0) \ + pr_debug(fmt, ##__VA_ARGS__); \ +} while (0) #endif #ifndef DEBUG_NCP #define DEBUG_NCP 0 #endif -#if DEBUG_NCP > 0 -#define DPRINTK(format, args...) PRINTK(format , ## args) -#else -#define DPRINTK(format, args...) -#endif -#if DEBUG_NCP > 1 -#define DDPRINTK(format, args...) PRINTK(format , ## args) -#else -#define DDPRINTK(format, args...) + +#if DEBUG_NCP > 0 && !defined(DEBUG) +#define DEBUG #endif +#define ncp_dbg(level, fmt, ...) \ +do { \ + if (level <= DEBUG_NCP) \ + pr_debug(fmt, ##__VA_ARGS__); \ +} while (0) + #define NCP_MAX_RPC_TIMEOUT (6*HZ) diff --git a/fs/ncpfs/ncplib_kernel.c b/fs/ncpfs/ncplib_kernel.c index 981a95617fc9..482387532f54 100644 --- a/fs/ncpfs/ncplib_kernel.c +++ b/fs/ncpfs/ncplib_kernel.c @@ -9,14 +9,14 @@ * */ - +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include "ncp_fs.h" static inline void assert_server_locked(struct ncp_server *server) { if (server->lock == 0) { - DPRINTK("ncpfs: server not locked!\n"); + ncp_dbg(1, "server not locked!\n"); } } @@ -75,7 +75,7 @@ static void ncp_add_pstring(struct ncp_server *server, const char *s) int len = strlen(s); assert_server_locked(server); if (len > 255) { - DPRINTK("ncpfs: string too long: %s\n", s); + ncp_dbg(1, "string too long: %s\n", s); len = 255; } ncp_add_byte(server, len); @@ -225,7 +225,7 @@ int ncp_get_volume_info_with_number(struct ncp_server* server, result = -EIO; len = ncp_reply_byte(server, 29); if (len > NCP_VOLNAME_LEN) { - DPRINTK("ncpfs: volume name too long: %d\n", len); + ncp_dbg(1, "volume name too long: %d\n", len); goto out; } memcpy(&(target->volume_name), ncp_reply_data(server, 30), len); @@ -259,7 +259,7 @@ int ncp_get_directory_info(struct ncp_server* server, __u8 n, result = -EIO; len = ncp_reply_byte(server, 21); if (len > NCP_VOLNAME_LEN) { - DPRINTK("ncpfs: volume name too long: %d\n", len); + ncp_dbg(1, "volume name too long: %d\n", len); goto out; } memcpy(&(target->volume_name), ncp_reply_data(server, 22), len); @@ -295,9 +295,9 @@ ncp_make_closed(struct inode *inode) err = ncp_close_file(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle); if (!err) - PPRINTK("ncp_make_closed: volnum=%d, dirent=%u, error=%d\n", - NCP_FINFO(inode)->volNumber, - NCP_FINFO(inode)->dirEntNum, err); + ncp_vdbg("volnum=%d, dirent=%u, error=%d\n", + NCP_FINFO(inode)->volNumber, + NCP_FINFO(inode)->dirEntNum, err); } mutex_unlock(&NCP_FINFO(inode)->open_mutex); return err; @@ -394,8 +394,7 @@ int ncp_obtain_nfs_info(struct ncp_server *server, if ((result = ncp_request(server, 87)) == 0) { ncp_extract_nfs_info(ncp_reply_data(server, 0), &target->nfs); - DPRINTK(KERN_DEBUG - "ncp_obtain_nfs_info: (%s) mode=0%o, rdev=0x%x\n", + ncp_dbg(1, "(%s) mode=0%o, rdev=0x%x\n", target->entryName, target->nfs.mode, target->nfs.rdev); } else { @@ -425,7 +424,7 @@ int ncp_obtain_info(struct ncp_server *server, struct inode *dir, const char *pa int result; if (target == NULL) { - printk(KERN_ERR "ncp_obtain_info: invalid call\n"); + pr_err("%s: invalid call\n", __func__); return -EINVAL; } ncp_init_request(server); @@ -498,7 +497,7 @@ ncp_get_known_namespace(struct ncp_server *server, __u8 volume) namespace = ncp_reply_data(server, 2); while (no_namespaces > 0) { - DPRINTK("get_namespaces: found %d on %d\n", *namespace, volume); + ncp_dbg(1, "found %d on %d\n", *namespace, volume); #ifdef CONFIG_NCPFS_NFS_NS if ((*namespace == NW_NS_NFS) && !(server->m.flags&NCP_MOUNT_NO_NFS)) @@ -531,8 +530,7 @@ ncp_update_known_namespace(struct ncp_server *server, __u8 volume, int *ret_ns) if (ret_ns) *ret_ns = ns; - DPRINTK("lookup_vol: namespace[%d] = %d\n", - volume, server->name_space[volume]); + ncp_dbg(1, "namespace[%d] = %d\n", volume, server->name_space[volume]); if (server->name_space[volume] == ns) return 0; @@ -596,7 +594,7 @@ ncp_get_volume_root(struct ncp_server *server, { int result; - DPRINTK("ncp_get_volume_root: looking up vol %s\n", volname); + ncp_dbg(1, "looking up vol %s\n", volname); ncp_init_request(server); ncp_add_byte(server, 22); /* Subfunction: Generate dir handle */ diff --git a/fs/ncpfs/sock.c b/fs/ncpfs/sock.c index 3a1587222c8a..04a69a4d8e96 100644 --- a/fs/ncpfs/sock.c +++ b/fs/ncpfs/sock.c @@ -8,6 +8,7 @@ * */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/time.h> #include <linux/errno.h> @@ -231,7 +232,7 @@ static void __ncptcp_try_send(struct ncp_server *server) return; if (result < 0) { - printk(KERN_ERR "ncpfs: tcp: Send failed: %d\n", result); + pr_err("tcp: Send failed: %d\n", result); __ncp_abort_request(server, rq, result); return; } @@ -332,7 +333,7 @@ static int ncp_add_request(struct ncp_server *server, struct ncp_request_reply * mutex_lock(&server->rcv.creq_mutex); if (!ncp_conn_valid(server)) { mutex_unlock(&server->rcv.creq_mutex); - printk(KERN_ERR "ncpfs: tcp: Server died\n"); + pr_err("tcp: Server died\n"); return -EIO; } ncp_req_get(req); @@ -405,15 +406,15 @@ void ncpdgram_rcv_proc(struct work_struct *work) } result = _recv(sock, buf, sizeof(buf), MSG_DONTWAIT); if (result < 0) { - DPRINTK("recv failed with %d\n", result); + ncp_dbg(1, "recv failed with %d\n", result); continue; } if (result < 10) { - DPRINTK("too short (%u) watchdog packet\n", result); + ncp_dbg(1, "too short (%u) watchdog packet\n", result); continue; } if (buf[9] != '?') { - DPRINTK("bad signature (%02X) in watchdog packet\n", buf[9]); + ncp_dbg(1, "bad signature (%02X) in watchdog packet\n", buf[9]); continue; } buf[9] = 'Y'; @@ -448,7 +449,7 @@ void ncpdgram_rcv_proc(struct work_struct *work) result -= 8; hdrl = sock->sk->sk_family == AF_INET ? 8 : 6; if (sign_verify_reply(server, server->rxbuf + hdrl, result - hdrl, cpu_to_le32(result), server->rxbuf + result)) { - printk(KERN_INFO "ncpfs: Signature violation\n"); + pr_info("Signature violation\n"); result = -EIO; } } @@ -524,7 +525,7 @@ static int do_tcp_rcv(struct ncp_server *server, void *buffer, size_t len) return result; } if (result > len) { - printk(KERN_ERR "ncpfs: tcp: bug in recvmsg (%u > %Zu)\n", result, len); + pr_err("tcp: bug in recvmsg (%u > %Zu)\n", result, len); return -EIO; } return result; @@ -552,9 +553,9 @@ static int __ncptcp_rcv_proc(struct ncp_server *server) __ncptcp_abort(server); } if (result < 0) { - printk(KERN_ERR "ncpfs: tcp: error in recvmsg: %d\n", result); + pr_err("tcp: error in recvmsg: %d\n", result); } else { - DPRINTK(KERN_ERR "ncpfs: tcp: EOF\n"); + ncp_dbg(1, "tcp: EOF\n"); } return -EIO; } @@ -566,20 +567,20 @@ static int __ncptcp_rcv_proc(struct ncp_server *server) switch (server->rcv.state) { case 0: if (server->rcv.buf.magic != htonl(NCP_TCP_RCVD_MAGIC)) { - printk(KERN_ERR "ncpfs: tcp: Unexpected reply type %08X\n", ntohl(server->rcv.buf.magic)); + pr_err("tcp: Unexpected reply type %08X\n", ntohl(server->rcv.buf.magic)); __ncptcp_abort(server); return -EIO; } datalen = ntohl(server->rcv.buf.len) & 0x0FFFFFFF; if (datalen < 10) { - printk(KERN_ERR "ncpfs: tcp: Unexpected reply len %d\n", datalen); + pr_err("tcp: Unexpected reply len %d\n", datalen); __ncptcp_abort(server); return -EIO; } #ifdef CONFIG_NCPFS_PACKET_SIGNING if (server->sign_active) { if (datalen < 18) { - printk(KERN_ERR "ncpfs: tcp: Unexpected reply len %d\n", datalen); + pr_err("tcp: Unexpected reply len %d\n", datalen); __ncptcp_abort(server); return -EIO; } @@ -604,7 +605,7 @@ cont:; server->rcv.len = datalen - 10; break; } - DPRINTK("ncpfs: tcp: Unexpected NCP type %02X\n", type); + ncp_dbg(1, "tcp: Unexpected NCP type %02X\n", type); skipdata2:; server->rcv.state = 2; skipdata:; @@ -614,11 +615,11 @@ skipdata:; } req = server->rcv.creq; if (!req) { - DPRINTK(KERN_ERR "ncpfs: Reply without appropriate request\n"); + ncp_dbg(1, "Reply without appropriate request\n"); goto skipdata2; } if (datalen > req->datalen + 8) { - printk(KERN_ERR "ncpfs: tcp: Unexpected reply len %d (expected at most %Zd)\n", datalen, req->datalen + 8); + pr_err("tcp: Unexpected reply len %d (expected at most %Zd)\n", datalen, req->datalen + 8); server->rcv.state = 3; goto skipdata; } @@ -638,12 +639,12 @@ skipdata:; req = server->rcv.creq; if (req->tx_type != NCP_ALLOC_SLOT_REQUEST) { if (((struct ncp_reply_header*)server->rxbuf)->sequence != server->sequence) { - printk(KERN_ERR "ncpfs: tcp: Bad sequence number\n"); + pr_err("tcp: Bad sequence number\n"); __ncp_abort_request(server, req, -EIO); return -EIO; } if ((((struct ncp_reply_header*)server->rxbuf)->conn_low | (((struct ncp_reply_header*)server->rxbuf)->conn_high << 8)) != server->connection) { - printk(KERN_ERR "ncpfs: tcp: Connection number mismatch\n"); + pr_err("tcp: Connection number mismatch\n"); __ncp_abort_request(server, req, -EIO); return -EIO; } @@ -651,7 +652,7 @@ skipdata:; #ifdef CONFIG_NCPFS_PACKET_SIGNING if (server->sign_active && req->tx_type != NCP_DEALLOC_SLOT_REQUEST) { if (sign_verify_reply(server, server->rxbuf + 6, req->datalen - 6, cpu_to_be32(req->datalen + 16), &server->rcv.buf.type)) { - printk(KERN_ERR "ncpfs: tcp: Signature violation\n"); + pr_err("tcp: Signature violation\n"); __ncp_abort_request(server, req, -EIO); return -EIO; } @@ -742,7 +743,7 @@ static int ncp_do_request(struct ncp_server *server, int size, int result; if (server->lock == 0) { - printk(KERN_ERR "ncpfs: Server not locked!\n"); + pr_err("Server not locked!\n"); return -EIO; } if (!ncp_conn_valid(server)) { @@ -781,7 +782,7 @@ static int ncp_do_request(struct ncp_server *server, int size, spin_unlock_irqrestore(¤t->sighand->siglock, flags); } - DDPRINTK("do_ncp_rpc_call returned %d\n", result); + ncp_dbg(2, "do_ncp_rpc_call returned %d\n", result); return result; } @@ -811,7 +812,7 @@ int ncp_request2(struct ncp_server *server, int function, result = ncp_do_request(server, server->current_size, reply, size); if (result < 0) { - DPRINTK("ncp_request_error: %d\n", result); + ncp_dbg(1, "ncp_request_error: %d\n", result); goto out; } server->completion = reply->completion_code; @@ -822,7 +823,7 @@ int ncp_request2(struct ncp_server *server, int function, result = reply->completion_code; if (result != 0) - PPRINTK("ncp_request: completion code=%x\n", result); + ncp_vdbg("completion code=%x\n", result); out: return result; } @@ -865,14 +866,14 @@ void ncp_lock_server(struct ncp_server *server) { mutex_lock(&server->mutex); if (server->lock) - printk(KERN_WARNING "ncp_lock_server: was locked!\n"); + pr_warn("%s: was locked!\n", __func__); server->lock = 1; } void ncp_unlock_server(struct ncp_server *server) { if (!server->lock) { - printk(KERN_WARNING "ncp_unlock_server: was not locked!\n"); + pr_warn("%s: was not locked!\n", __func__); return; } server->lock = 0; diff --git a/fs/ncpfs/symlink.c b/fs/ncpfs/symlink.c index 52439ddc8de0..1a63bfdb4a65 100644 --- a/fs/ncpfs/symlink.c +++ b/fs/ncpfs/symlink.c @@ -112,7 +112,7 @@ int ncp_symlink(struct inode *dir, struct dentry *dentry, const char *symname) { __le32 attr; unsigned int hdr; - DPRINTK("ncp_symlink(dir=%p,dentry=%p,symname=%s)\n",dir,dentry,symname); + ncp_dbg(1, "dir=%p, dentry=%p, symname=%s\n", dir, dentry, symname); if (ncp_is_nfs_extras(NCP_SERVER(dir), NCP_FINFO(dir)->volNumber)) kludge = 0; diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c index e242bbf72972..65d849bdf77a 100644 --- a/fs/nfs/blocklayout/blocklayout.c +++ b/fs/nfs/blocklayout/blocklayout.c @@ -134,8 +134,8 @@ bl_submit_bio(int rw, struct bio *bio) if (bio) { get_parallel(bio->bi_private); dprintk("%s submitting %s bio %u@%llu\n", __func__, - rw == READ ? "read" : "write", - bio->bi_size, (unsigned long long)bio->bi_sector); + rw == READ ? "read" : "write", bio->bi_iter.bi_size, + (unsigned long long)bio->bi_iter.bi_sector); submit_bio(rw, bio); } return NULL; @@ -156,7 +156,8 @@ static struct bio *bl_alloc_init_bio(int npg, sector_t isect, } if (bio) { - bio->bi_sector = isect - be->be_f_offset + be->be_v_offset; + bio->bi_iter.bi_sector = isect - be->be_f_offset + + be->be_v_offset; bio->bi_bdev = be->be_mdev; bio->bi_end_io = end_io; bio->bi_private = par; @@ -201,18 +202,14 @@ static struct bio *bl_add_page_to_bio(struct bio *bio, int npg, int rw, static void bl_end_io_read(struct bio *bio, int err) { struct parallel_io *par = bio->bi_private; - const int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); - struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1; + struct bio_vec *bvec; + int i; - do { - struct page *page = bvec->bv_page; + if (!err) + bio_for_each_segment_all(bvec, bio, i) + SetPageUptodate(bvec->bv_page); - if (--bvec >= bio->bi_io_vec) - prefetchw(&bvec->bv_page->flags); - if (uptodate) - SetPageUptodate(page); - } while (bvec >= bio->bi_io_vec); - if (!uptodate) { + if (err) { struct nfs_read_data *rdata = par->data; struct nfs_pgio_header *header = rdata->header; @@ -383,20 +380,16 @@ static void mark_extents_written(struct pnfs_block_layout *bl, static void bl_end_io_write_zero(struct bio *bio, int err) { struct parallel_io *par = bio->bi_private; - const int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); - struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1; - - do { - struct page *page = bvec->bv_page; + struct bio_vec *bvec; + int i; - if (--bvec >= bio->bi_io_vec) - prefetchw(&bvec->bv_page->flags); + bio_for_each_segment_all(bvec, bio, i) { /* This is the zeroing page we added */ - end_page_writeback(page); - page_cache_release(page); - } while (bvec >= bio->bi_io_vec); + end_page_writeback(bvec->bv_page); + page_cache_release(bvec->bv_page); + } - if (unlikely(!uptodate)) { + if (unlikely(err)) { struct nfs_write_data *data = par->data; struct nfs_pgio_header *header = data->header; @@ -519,7 +512,7 @@ bl_do_readpage_sync(struct page *page, struct pnfs_block_extent *be, isect = (page->index << PAGE_CACHE_SECTOR_SHIFT) + (offset / SECTOR_SIZE); - bio->bi_sector = isect - be->be_f_offset + be->be_v_offset; + bio->bi_iter.bi_sector = isect - be->be_f_offset + be->be_v_offset; bio->bi_bdev = be->be_mdev; bio->bi_end_io = bl_read_single_end_io; @@ -1220,7 +1213,7 @@ static u64 pnfs_num_cont_bytes(struct inode *inode, pgoff_t idx) end = DIV_ROUND_UP(i_size_read(inode), PAGE_CACHE_SIZE); if (end != NFS_I(inode)->npages) { rcu_read_lock(); - end = radix_tree_next_hole(&mapping->page_tree, idx + 1, ULONG_MAX); + end = page_cache_next_hole(mapping, idx + 1, ULONG_MAX); rcu_read_unlock(); } diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index ae2e87b95453..41db5258e7a7 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -112,7 +112,8 @@ out: * TODO: keep track of all layouts (and delegations) in a hash table * hashed by filehandle. */ -static struct pnfs_layout_hdr * get_layout_by_fh_locked(struct nfs_client *clp, struct nfs_fh *fh) +static struct pnfs_layout_hdr * get_layout_by_fh_locked(struct nfs_client *clp, + struct nfs_fh *fh, nfs4_stateid *stateid) { struct nfs_server *server; struct inode *ino; @@ -120,17 +121,19 @@ static struct pnfs_layout_hdr * get_layout_by_fh_locked(struct nfs_client *clp, list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) { list_for_each_entry(lo, &server->layouts, plh_layouts) { + if (!nfs4_stateid_match_other(&lo->plh_stateid, stateid)) + continue; if (nfs_compare_fh(fh, &NFS_I(lo->plh_inode)->fh)) continue; ino = igrab(lo->plh_inode); if (!ino) - continue; + break; spin_lock(&ino->i_lock); /* Is this layout in the process of being freed? */ if (NFS_I(ino)->layout != lo) { spin_unlock(&ino->i_lock); iput(ino); - continue; + break; } pnfs_get_layout_hdr(lo); spin_unlock(&ino->i_lock); @@ -141,13 +144,14 @@ static struct pnfs_layout_hdr * get_layout_by_fh_locked(struct nfs_client *clp, return NULL; } -static struct pnfs_layout_hdr * get_layout_by_fh(struct nfs_client *clp, struct nfs_fh *fh) +static struct pnfs_layout_hdr * get_layout_by_fh(struct nfs_client *clp, + struct nfs_fh *fh, nfs4_stateid *stateid) { struct pnfs_layout_hdr *lo; spin_lock(&clp->cl_lock); rcu_read_lock(); - lo = get_layout_by_fh_locked(clp, fh); + lo = get_layout_by_fh_locked(clp, fh, stateid); rcu_read_unlock(); spin_unlock(&clp->cl_lock); @@ -162,9 +166,9 @@ static u32 initiate_file_draining(struct nfs_client *clp, u32 rv = NFS4ERR_NOMATCHING_LAYOUT; LIST_HEAD(free_me_list); - lo = get_layout_by_fh(clp, &args->cbl_fh); + lo = get_layout_by_fh(clp, &args->cbl_fh, &args->cbl_stateid); if (!lo) - return NFS4ERR_NOMATCHING_LAYOUT; + goto out; ino = lo->plh_inode; spin_lock(&ino->i_lock); @@ -179,6 +183,7 @@ static u32 initiate_file_draining(struct nfs_client *clp, pnfs_free_lseg_list(&free_me_list); pnfs_put_layout_hdr(lo); iput(ino); +out: return rv; } diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index ef792f29f831..5d8ccecf5f5c 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -659,16 +659,19 @@ int nfs_async_inode_return_delegation(struct inode *inode, rcu_read_lock(); delegation = rcu_dereference(NFS_I(inode)->delegation); + if (delegation == NULL) + goto out_enoent; - if (!clp->cl_mvops->match_stateid(&delegation->stateid, stateid)) { - rcu_read_unlock(); - return -ENOENT; - } + if (!clp->cl_mvops->match_stateid(&delegation->stateid, stateid)) + goto out_enoent; nfs_mark_return_delegation(server, delegation); rcu_read_unlock(); nfs_delegation_run_state_manager(clp); return 0; +out_enoent: + rcu_read_unlock(); + return -ENOENT; } static struct inode * diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 812154aff981..d9f3d067cd15 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -69,21 +69,28 @@ const struct address_space_operations nfs_dir_aops = { static struct nfs_open_dir_context *alloc_nfs_open_dir_context(struct inode *dir, struct rpc_cred *cred) { + struct nfs_inode *nfsi = NFS_I(dir); struct nfs_open_dir_context *ctx; ctx = kmalloc(sizeof(*ctx), GFP_KERNEL); if (ctx != NULL) { ctx->duped = 0; - ctx->attr_gencount = NFS_I(dir)->attr_gencount; + ctx->attr_gencount = nfsi->attr_gencount; ctx->dir_cookie = 0; ctx->dup_cookie = 0; ctx->cred = get_rpccred(cred); + spin_lock(&dir->i_lock); + list_add(&ctx->list, &nfsi->open_files); + spin_unlock(&dir->i_lock); return ctx; } return ERR_PTR(-ENOMEM); } -static void put_nfs_open_dir_context(struct nfs_open_dir_context *ctx) +static void put_nfs_open_dir_context(struct inode *dir, struct nfs_open_dir_context *ctx) { + spin_lock(&dir->i_lock); + list_del(&ctx->list); + spin_unlock(&dir->i_lock); put_rpccred(ctx->cred); kfree(ctx); } @@ -126,7 +133,7 @@ out: static int nfs_closedir(struct inode *inode, struct file *filp) { - put_nfs_open_dir_context(filp->private_data); + put_nfs_open_dir_context(filp->f_path.dentry->d_inode, filp->private_data); return 0; } @@ -274,6 +281,15 @@ out_eof: return -EBADCOOKIE; } +static bool +nfs_readdir_inode_mapping_valid(struct nfs_inode *nfsi) +{ + if (nfsi->cache_validity & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA)) + return false; + smp_rmb(); + return !test_bit(NFS_INO_INVALIDATING, &nfsi->flags); +} + static int nfs_readdir_search_for_cookie(struct nfs_cache_array *array, nfs_readdir_descriptor_t *desc) { @@ -287,8 +303,8 @@ int nfs_readdir_search_for_cookie(struct nfs_cache_array *array, nfs_readdir_des struct nfs_open_dir_context *ctx = desc->file->private_data; new_pos = desc->current_index + i; - if (ctx->attr_gencount != nfsi->attr_gencount - || (nfsi->cache_validity & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA))) { + if (ctx->attr_gencount != nfsi->attr_gencount || + !nfs_readdir_inode_mapping_valid(nfsi)) { ctx->duped = 0; ctx->attr_gencount = nfsi->attr_gencount; } else if (new_pos < desc->ctx->pos) { @@ -297,10 +313,9 @@ int nfs_readdir_search_for_cookie(struct nfs_cache_array *array, nfs_readdir_des if (printk_ratelimit()) { pr_notice("NFS: directory %pD2 contains a readdir loop." "Please contact your server vendor. " - "The file: %s has duplicate cookie %llu\n", - desc->file, - array->array[i].string.name, - *desc->dir_cookie); + "The file: %.*s has duplicate cookie %llu\n", + desc->file, array->array[i].string.len, + array->array[i].string.name, *desc->dir_cookie); } status = -ELOOP; goto out; @@ -428,6 +443,22 @@ void nfs_advise_use_readdirplus(struct inode *dir) set_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(dir)->flags); } +/* + * This function is mainly for use by nfs_getattr(). + * + * If this is an 'ls -l', we want to force use of readdirplus. + * Do this by checking if there is an active file descriptor + * and calling nfs_advise_use_readdirplus, then forcing a + * cache flush. + */ +void nfs_force_use_readdirplus(struct inode *dir) +{ + if (!list_empty(&NFS_I(dir)->open_files)) { + nfs_advise_use_readdirplus(dir); + nfs_zap_mapping(dir, dir->i_mapping); + } +} + static void nfs_prime_dcache(struct dentry *parent, struct nfs_entry *entry) { @@ -806,6 +837,17 @@ int uncached_readdir(nfs_readdir_descriptor_t *desc) goto out; } +static bool nfs_dir_mapping_need_revalidate(struct inode *dir) +{ + struct nfs_inode *nfsi = NFS_I(dir); + + if (nfs_attribute_cache_expired(dir)) + return true; + if (nfsi->cache_validity & NFS_INO_INVALID_DATA) + return true; + return false; +} + /* The file offset position represents the dirent entry number. A last cookie cache takes care of the common case of reading the whole directory. @@ -838,7 +880,7 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx) desc->plus = nfs_use_readdirplus(inode, ctx) ? 1 : 0; nfs_block_sillyrename(dentry); - if (ctx->pos == 0 || nfs_attribute_cache_expired(inode)) + if (ctx->pos == 0 || nfs_dir_mapping_need_revalidate(inode)) res = nfs_revalidate_mapping(inode, file->f_mapping); if (res < 0) goto out; @@ -1404,7 +1446,7 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry, /* Expect a negative dentry */ BUG_ON(dentry->d_inode); - dfprintk(VFS, "NFS: atomic_open(%s/%ld), %pd\n", + dfprintk(VFS, "NFS: atomic_open(%s/%lu), %pd\n", dir->i_sb->s_id, dir->i_ino, dentry); err = nfs_check_flags(open_flags); @@ -1594,7 +1636,7 @@ int nfs_create(struct inode *dir, struct dentry *dentry, int open_flags = excl ? O_CREAT | O_EXCL : O_CREAT; int error; - dfprintk(VFS, "NFS: create(%s/%ld), %pd\n", + dfprintk(VFS, "NFS: create(%s/%lu), %pd\n", dir->i_sb->s_id, dir->i_ino, dentry); attr.ia_mode = mode; @@ -1621,7 +1663,7 @@ nfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev) struct iattr attr; int status; - dfprintk(VFS, "NFS: mknod(%s/%ld), %pd\n", + dfprintk(VFS, "NFS: mknod(%s/%lu), %pd\n", dir->i_sb->s_id, dir->i_ino, dentry); if (!new_valid_dev(rdev)) @@ -1650,7 +1692,7 @@ int nfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) struct iattr attr; int error; - dfprintk(VFS, "NFS: mkdir(%s/%ld), %pd\n", + dfprintk(VFS, "NFS: mkdir(%s/%lu), %pd\n", dir->i_sb->s_id, dir->i_ino, dentry); attr.ia_valid = ATTR_MODE; @@ -1678,7 +1720,7 @@ int nfs_rmdir(struct inode *dir, struct dentry *dentry) { int error; - dfprintk(VFS, "NFS: rmdir(%s/%ld), %pd\n", + dfprintk(VFS, "NFS: rmdir(%s/%lu), %pd\n", dir->i_sb->s_id, dir->i_ino, dentry); trace_nfs_rmdir_enter(dir, dentry); @@ -1747,7 +1789,7 @@ int nfs_unlink(struct inode *dir, struct dentry *dentry) int error; int need_rehash = 0; - dfprintk(VFS, "NFS: unlink(%s/%ld, %pd)\n", dir->i_sb->s_id, + dfprintk(VFS, "NFS: unlink(%s/%lu, %pd)\n", dir->i_sb->s_id, dir->i_ino, dentry); trace_nfs_unlink_enter(dir, dentry); @@ -1798,7 +1840,7 @@ int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) unsigned int pathlen = strlen(symname); int error; - dfprintk(VFS, "NFS: symlink(%s/%ld, %pd, %s)\n", dir->i_sb->s_id, + dfprintk(VFS, "NFS: symlink(%s/%lu, %pd, %s)\n", dir->i_sb->s_id, dir->i_ino, dentry, symname); if (pathlen > PAGE_SIZE) @@ -1821,7 +1863,7 @@ int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) error = NFS_PROTO(dir)->symlink(dir, dentry, page, pathlen, &attr); trace_nfs_symlink_exit(dir, dentry, error); if (error != 0) { - dfprintk(VFS, "NFS: symlink(%s/%ld, %pd, %s) error %d\n", + dfprintk(VFS, "NFS: symlink(%s/%lu, %pd, %s) error %d\n", dir->i_sb->s_id, dir->i_ino, dentry, symname, error); d_drop(dentry); @@ -1837,6 +1879,11 @@ int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) GFP_KERNEL)) { SetPageUptodate(page); unlock_page(page); + /* + * add_to_page_cache_lru() grabs an extra page refcount. + * Drop it here to avoid leaking this page later. + */ + page_cache_release(page); } else __free_page(page); @@ -1897,6 +1944,7 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry, struct inode *old_inode = old_dentry->d_inode; struct inode *new_inode = new_dentry->d_inode; struct dentry *dentry = NULL, *rehash = NULL; + struct rpc_task *task; int error = -EBUSY; dfprintk(VFS, "NFS: rename(%pd2 -> %pd2, ct=%d)\n", @@ -1944,8 +1992,16 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry, if (new_inode != NULL) NFS_PROTO(new_inode)->return_delegation(new_inode); - error = NFS_PROTO(old_dir)->rename(old_dir, &old_dentry->d_name, - new_dir, &new_dentry->d_name); + task = nfs_async_rename(old_dir, new_dir, old_dentry, new_dentry, NULL); + if (IS_ERR(task)) { + error = PTR_ERR(task); + goto out; + } + + error = rpc_wait_for_completion_task(task); + if (error == 0) + error = task->tk_status; + rpc_put_task(task); nfs_mark_for_revalidate(old_inode); out: if (rehash) @@ -2304,7 +2360,7 @@ out: if (!res && (mask & MAY_EXEC) && !execute_ok(inode)) res = -EACCES; - dfprintk(VFS, "NFS: permission(%s/%ld), mask=0x%x, res=%d\n", + dfprintk(VFS, "NFS: permission(%s/%lu), mask=0x%x, res=%d\n", inode->i_sb->s_id, inode->i_ino, mask, res); return res; out_notsup: diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index d71d66c9e0a1..b8797ae6831f 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -222,14 +222,31 @@ out: * Synchronous I/O uses a stack-allocated iocb. Thus we can't trust * the iocb is still valid here if this is a synchronous request. */ -static void nfs_direct_complete(struct nfs_direct_req *dreq) +static void nfs_direct_complete(struct nfs_direct_req *dreq, bool write) { + struct inode *inode = dreq->inode; + + if (dreq->iocb && write) { + loff_t pos = dreq->iocb->ki_pos + dreq->count; + + spin_lock(&inode->i_lock); + if (i_size_read(inode) < pos) + i_size_write(inode, pos); + spin_unlock(&inode->i_lock); + } + + if (write) + nfs_zap_mapping(inode, inode->i_mapping); + + inode_dio_done(inode); + if (dreq->iocb) { long res = (long) dreq->error; if (!res) res = (long) dreq->count; aio_complete(dreq->iocb, res, 0); } + complete_all(&dreq->completion); nfs_direct_req_release(dreq); @@ -237,9 +254,9 @@ static void nfs_direct_complete(struct nfs_direct_req *dreq) static void nfs_direct_readpage_release(struct nfs_page *req) { - dprintk("NFS: direct read done (%s/%lld %d@%lld)\n", + dprintk("NFS: direct read done (%s/%llu %d@%lld)\n", req->wb_context->dentry->d_inode->i_sb->s_id, - (long long)NFS_FILEID(req->wb_context->dentry->d_inode), + (unsigned long long)NFS_FILEID(req->wb_context->dentry->d_inode), req->wb_bytes, (long long)req_offset(req)); nfs_release_request(req); @@ -272,7 +289,7 @@ static void nfs_direct_read_completion(struct nfs_pgio_header *hdr) } out_put: if (put_dreq(dreq)) - nfs_direct_complete(dreq); + nfs_direct_complete(dreq, false); hdr->release(hdr); } @@ -402,6 +419,7 @@ static ssize_t nfs_direct_read_schedule_iovec(struct nfs_direct_req *dreq, loff_t pos, bool uio) { struct nfs_pageio_descriptor desc; + struct inode *inode = dreq->inode; ssize_t result = -EINVAL; size_t requested_bytes = 0; unsigned long seg; @@ -410,6 +428,7 @@ static ssize_t nfs_direct_read_schedule_iovec(struct nfs_direct_req *dreq, &nfs_direct_read_completion_ops); get_dreq(dreq); desc.pg_dreq = dreq; + atomic_inc(&inode->i_dio_count); for (seg = 0; seg < nr_segs; seg++) { const struct iovec *vec = &iov[seg]; @@ -429,26 +448,69 @@ static ssize_t nfs_direct_read_schedule_iovec(struct nfs_direct_req *dreq, * generic layer handle the completion. */ if (requested_bytes == 0) { + inode_dio_done(inode); nfs_direct_req_release(dreq); return result < 0 ? result : -EIO; } if (put_dreq(dreq)) - nfs_direct_complete(dreq); + nfs_direct_complete(dreq, false); return 0; } -static ssize_t nfs_direct_read(struct kiocb *iocb, const struct iovec *iov, - unsigned long nr_segs, loff_t pos, bool uio) +/** + * nfs_file_direct_read - file direct read operation for NFS files + * @iocb: target I/O control block + * @iov: vector of user buffers into which to read data + * @nr_segs: size of iov vector + * @pos: byte offset in file where reading starts + * + * We use this function for direct reads instead of calling + * generic_file_aio_read() in order to avoid gfar's check to see if + * the request starts before the end of the file. For that check + * to work, we must generate a GETATTR before each direct read, and + * even then there is a window between the GETATTR and the subsequent + * READ where the file size could change. Our preference is simply + * to do all reads the application wants, and the server will take + * care of managing the end of file boundary. + * + * This function also eliminates unnecessarily updating the file's + * atime locally, as the NFS server sets the file's atime, and this + * client must read the updated atime from the server back into its + * cache. + */ +ssize_t nfs_file_direct_read(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos, bool uio) { - ssize_t result = -ENOMEM; - struct inode *inode = iocb->ki_filp->f_mapping->host; + struct file *file = iocb->ki_filp; + struct address_space *mapping = file->f_mapping; + struct inode *inode = mapping->host; struct nfs_direct_req *dreq; struct nfs_lock_context *l_ctx; + ssize_t result = -EINVAL; + size_t count; + count = iov_length(iov, nr_segs); + nfs_add_stats(mapping->host, NFSIOS_DIRECTREADBYTES, count); + + dfprintk(FILE, "NFS: direct read(%pD2, %zd@%Ld)\n", + file, count, (long long) pos); + + result = 0; + if (!count) + goto out; + + mutex_lock(&inode->i_mutex); + result = nfs_sync_mapping(mapping); + if (result) + goto out_unlock; + + task_io_account_read(count); + + result = -ENOMEM; dreq = nfs_direct_req_alloc(); if (dreq == NULL) - goto out; + goto out_unlock; dreq->inode = inode; dreq->bytes_left = iov_length(iov, nr_segs); @@ -464,20 +526,26 @@ static ssize_t nfs_direct_read(struct kiocb *iocb, const struct iovec *iov, NFS_I(inode)->read_io += iov_length(iov, nr_segs); result = nfs_direct_read_schedule_iovec(dreq, iov, nr_segs, pos, uio); - if (!result) + + mutex_unlock(&inode->i_mutex); + + if (!result) { result = nfs_direct_wait(dreq); + if (result > 0) + iocb->ki_pos = pos + result; + } + + nfs_direct_req_release(dreq); + return result; + out_release: nfs_direct_req_release(dreq); +out_unlock: + mutex_unlock(&inode->i_mutex); out: return result; } -static void nfs_inode_dio_write_done(struct inode *inode) -{ - nfs_zap_mapping(inode, inode->i_mapping); - inode_dio_done(inode); -} - #if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4) static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq) { @@ -593,8 +661,7 @@ static void nfs_direct_write_schedule_work(struct work_struct *work) nfs_direct_write_reschedule(dreq); break; default: - nfs_inode_dio_write_done(dreq->inode); - nfs_direct_complete(dreq); + nfs_direct_complete(dreq, true); } } @@ -610,8 +677,7 @@ static void nfs_direct_write_schedule_work(struct work_struct *work) static void nfs_direct_write_complete(struct nfs_direct_req *dreq, struct inode *inode) { - nfs_inode_dio_write_done(inode); - nfs_direct_complete(dreq); + nfs_direct_complete(dreq, true); } #endif @@ -842,93 +908,6 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq, return 0; } -static ssize_t nfs_direct_write(struct kiocb *iocb, const struct iovec *iov, - unsigned long nr_segs, loff_t pos, - size_t count, bool uio) -{ - ssize_t result = -ENOMEM; - struct inode *inode = iocb->ki_filp->f_mapping->host; - struct nfs_direct_req *dreq; - struct nfs_lock_context *l_ctx; - - dreq = nfs_direct_req_alloc(); - if (!dreq) - goto out; - - dreq->inode = inode; - dreq->bytes_left = count; - dreq->ctx = get_nfs_open_context(nfs_file_open_context(iocb->ki_filp)); - l_ctx = nfs_get_lock_context(dreq->ctx); - if (IS_ERR(l_ctx)) { - result = PTR_ERR(l_ctx); - goto out_release; - } - dreq->l_ctx = l_ctx; - if (!is_sync_kiocb(iocb)) - dreq->iocb = iocb; - - result = nfs_direct_write_schedule_iovec(dreq, iov, nr_segs, pos, uio); - if (!result) - result = nfs_direct_wait(dreq); -out_release: - nfs_direct_req_release(dreq); -out: - return result; -} - -/** - * nfs_file_direct_read - file direct read operation for NFS files - * @iocb: target I/O control block - * @iov: vector of user buffers into which to read data - * @nr_segs: size of iov vector - * @pos: byte offset in file where reading starts - * - * We use this function for direct reads instead of calling - * generic_file_aio_read() in order to avoid gfar's check to see if - * the request starts before the end of the file. For that check - * to work, we must generate a GETATTR before each direct read, and - * even then there is a window between the GETATTR and the subsequent - * READ where the file size could change. Our preference is simply - * to do all reads the application wants, and the server will take - * care of managing the end of file boundary. - * - * This function also eliminates unnecessarily updating the file's - * atime locally, as the NFS server sets the file's atime, and this - * client must read the updated atime from the server back into its - * cache. - */ -ssize_t nfs_file_direct_read(struct kiocb *iocb, const struct iovec *iov, - unsigned long nr_segs, loff_t pos, bool uio) -{ - ssize_t retval = -EINVAL; - struct file *file = iocb->ki_filp; - struct address_space *mapping = file->f_mapping; - size_t count; - - count = iov_length(iov, nr_segs); - nfs_add_stats(mapping->host, NFSIOS_DIRECTREADBYTES, count); - - dfprintk(FILE, "NFS: direct read(%pD2, %zd@%Ld)\n", - file, count, (long long) pos); - - retval = 0; - if (!count) - goto out; - - retval = nfs_sync_mapping(mapping); - if (retval) - goto out; - - task_io_account_read(count); - - retval = nfs_direct_read(iocb, iov, nr_segs, pos, uio); - if (retval > 0) - iocb->ki_pos = pos + retval; - -out: - return retval; -} - /** * nfs_file_direct_write - file direct write operation for NFS files * @iocb: target I/O control block @@ -954,46 +933,96 @@ out: ssize_t nfs_file_direct_write(struct kiocb *iocb, const struct iovec *iov, unsigned long nr_segs, loff_t pos, bool uio) { - ssize_t retval = -EINVAL; + ssize_t result = -EINVAL; struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; + struct inode *inode = mapping->host; + struct nfs_direct_req *dreq; + struct nfs_lock_context *l_ctx; + loff_t end; size_t count; count = iov_length(iov, nr_segs); + end = (pos + count - 1) >> PAGE_CACHE_SHIFT; + nfs_add_stats(mapping->host, NFSIOS_DIRECTWRITTENBYTES, count); dfprintk(FILE, "NFS: direct write(%pD2, %zd@%Ld)\n", file, count, (long long) pos); - retval = generic_write_checks(file, &pos, &count, 0); - if (retval) + result = generic_write_checks(file, &pos, &count, 0); + if (result) goto out; - retval = -EINVAL; + result = -EINVAL; if ((ssize_t) count < 0) goto out; - retval = 0; + result = 0; if (!count) goto out; - retval = nfs_sync_mapping(mapping); - if (retval) - goto out; + mutex_lock(&inode->i_mutex); + + result = nfs_sync_mapping(mapping); + if (result) + goto out_unlock; + + if (mapping->nrpages) { + result = invalidate_inode_pages2_range(mapping, + pos >> PAGE_CACHE_SHIFT, end); + if (result) + goto out_unlock; + } task_io_account_write(count); - retval = nfs_direct_write(iocb, iov, nr_segs, pos, count, uio); - if (retval > 0) { - struct inode *inode = mapping->host; + result = -ENOMEM; + dreq = nfs_direct_req_alloc(); + if (!dreq) + goto out_unlock; - iocb->ki_pos = pos + retval; - spin_lock(&inode->i_lock); - if (i_size_read(inode) < iocb->ki_pos) - i_size_write(inode, iocb->ki_pos); - spin_unlock(&inode->i_lock); + dreq->inode = inode; + dreq->bytes_left = count; + dreq->ctx = get_nfs_open_context(nfs_file_open_context(iocb->ki_filp)); + l_ctx = nfs_get_lock_context(dreq->ctx); + if (IS_ERR(l_ctx)) { + result = PTR_ERR(l_ctx); + goto out_release; + } + dreq->l_ctx = l_ctx; + if (!is_sync_kiocb(iocb)) + dreq->iocb = iocb; + + result = nfs_direct_write_schedule_iovec(dreq, iov, nr_segs, pos, uio); + + if (mapping->nrpages) { + invalidate_inode_pages2_range(mapping, + pos >> PAGE_CACHE_SHIFT, end); } + + mutex_unlock(&inode->i_mutex); + + if (!result) { + result = nfs_direct_wait(dreq); + if (result > 0) { + struct inode *inode = mapping->host; + + iocb->ki_pos = pos + result; + spin_lock(&inode->i_lock); + if (i_size_read(inode) < iocb->ki_pos) + i_size_write(inode, iocb->ki_pos); + spin_unlock(&inode->i_lock); + } + } + nfs_direct_req_release(dreq); + return result; + +out_release: + nfs_direct_req_release(dreq); +out_unlock: + mutex_unlock(&inode->i_mutex); out: - return retval; + return result; } /** diff --git a/fs/nfs/file.c b/fs/nfs/file.c index e2fcacf07de3..284ca901fe16 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -354,7 +354,7 @@ static int nfs_write_begin(struct file *file, struct address_space *mapping, struct page *page; int once_thru = 0; - dfprintk(PAGECACHE, "NFS: write_begin(%pD2(%ld), %u@%lld)\n", + dfprintk(PAGECACHE, "NFS: write_begin(%pD2(%lu), %u@%lld)\n", file, mapping->host->i_ino, len, (long long) pos); start: @@ -395,7 +395,7 @@ static int nfs_write_end(struct file *file, struct address_space *mapping, struct nfs_open_context *ctx = nfs_file_open_context(file); int status; - dfprintk(PAGECACHE, "NFS: write_end(%pD2(%ld), %u@%lld)\n", + dfprintk(PAGECACHE, "NFS: write_end(%pD2(%lu), %u@%lld)\n", file, mapping->host->i_ino, len, (long long) pos); /* @@ -585,7 +585,7 @@ static int nfs_vm_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) int ret = VM_FAULT_NOPAGE; struct address_space *mapping; - dfprintk(PAGECACHE, "NFS: vm_page_mkwrite(%pD2(%ld), offset %lld)\n", + dfprintk(PAGECACHE, "NFS: vm_page_mkwrite(%pD2(%lu), offset %lld)\n", filp, filp->f_mapping->host->i_ino, (long long)page_offset(page)); @@ -617,6 +617,7 @@ out: static const struct vm_operations_struct nfs_file_vm_ops = { .fault = filemap_fault, + .map_pages = filemap_map_pages, .page_mkwrite = nfs_vm_page_mkwrite, .remap_pages = generic_file_remap_pages, }; diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 00ad1c2b217d..0c438973f3c8 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -128,7 +128,7 @@ EXPORT_SYMBOL_GPL(nfs_clear_inode); void nfs_evict_inode(struct inode *inode) { - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); nfs_clear_inode(inode); } @@ -164,17 +164,16 @@ static void nfs_zap_caches_locked(struct inode *inode) if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)) { nfs_fscache_invalidate(inode); nfsi->cache_validity |= NFS_INO_INVALID_ATTR - | NFS_INO_INVALID_LABEL | NFS_INO_INVALID_DATA | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL | NFS_INO_REVAL_PAGECACHE; } else nfsi->cache_validity |= NFS_INO_INVALID_ATTR - | NFS_INO_INVALID_LABEL | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL | NFS_INO_REVAL_PAGECACHE; + nfs_zap_label_cache_locked(nfsi); } void nfs_zap_caches(struct inode *inode) @@ -266,6 +265,13 @@ nfs_init_locked(struct inode *inode, void *opaque) } #ifdef CONFIG_NFS_V4_SECURITY_LABEL +static void nfs_clear_label_invalid(struct inode *inode) +{ + spin_lock(&inode->i_lock); + NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_LABEL; + spin_unlock(&inode->i_lock); +} + void nfs_setsecurity(struct inode *inode, struct nfs_fattr *fattr, struct nfs4_label *label) { @@ -283,6 +289,7 @@ void nfs_setsecurity(struct inode *inode, struct nfs_fattr *fattr, __func__, (char *)label->label, label->len, error); + nfs_clear_label_invalid(inode); } } @@ -458,9 +465,9 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr, st unlock_new_inode(inode); } else nfs_refresh_inode(inode, fattr); - dprintk("NFS: nfs_fhget(%s/%Ld fh_crc=0x%08x ct=%d)\n", + dprintk("NFS: nfs_fhget(%s/%Lu fh_crc=0x%08x ct=%d)\n", inode->i_sb->s_id, - (long long)NFS_FILEID(inode), + (unsigned long long)NFS_FILEID(inode), nfs_display_fhandle_hash(fh), atomic_read(&inode->i_count)); @@ -581,6 +588,25 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr) } EXPORT_SYMBOL_GPL(nfs_setattr_update_inode); +static void nfs_request_parent_use_readdirplus(struct dentry *dentry) +{ + struct dentry *parent; + + parent = dget_parent(dentry); + nfs_force_use_readdirplus(parent->d_inode); + dput(parent); +} + +static bool nfs_need_revalidate_inode(struct inode *inode) +{ + if (NFS_I(inode)->cache_validity & + (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_LABEL)) + return true; + if (nfs_attribute_cache_expired(inode)) + return true; + return false; +} + int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) { struct inode *inode = dentry->d_inode; @@ -609,10 +635,13 @@ int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) ((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode))) need_atime = 0; - if (need_atime) - err = __nfs_revalidate_inode(NFS_SERVER(inode), inode); - else - err = nfs_revalidate_inode(NFS_SERVER(inode), inode); + if (need_atime || nfs_need_revalidate_inode(inode)) { + struct nfs_server *server = NFS_SERVER(inode); + + if (server->caps & NFS_CAP_READDIRPLUS) + nfs_request_parent_use_readdirplus(dentry); + err = __nfs_revalidate_inode(server, inode); + } if (!err) { generic_fillattr(inode, stat); stat->ino = nfs_compat_user_ino64(NFS_FILEID(inode)); @@ -870,8 +899,8 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode) struct nfs_fattr *fattr = NULL; struct nfs_inode *nfsi = NFS_I(inode); - dfprintk(PAGECACHE, "NFS: revalidating (%s/%Ld)\n", - inode->i_sb->s_id, (long long)NFS_FILEID(inode)); + dfprintk(PAGECACHE, "NFS: revalidating (%s/%Lu)\n", + inode->i_sb->s_id, (unsigned long long)NFS_FILEID(inode)); trace_nfs_revalidate_inode_enter(inode); @@ -895,9 +924,9 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode) status = NFS_PROTO(inode)->getattr(server, NFS_FH(inode), fattr, label); if (status != 0) { - dfprintk(PAGECACHE, "nfs_revalidate_inode: (%s/%Ld) getattr failed, error=%d\n", + dfprintk(PAGECACHE, "nfs_revalidate_inode: (%s/%Lu) getattr failed, error=%d\n", inode->i_sb->s_id, - (long long)NFS_FILEID(inode), status); + (unsigned long long)NFS_FILEID(inode), status); if (status == -ESTALE) { nfs_zap_caches(inode); if (!S_ISDIR(inode->i_mode)) @@ -908,9 +937,9 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode) status = nfs_refresh_inode(inode, fattr); if (status) { - dfprintk(PAGECACHE, "nfs_revalidate_inode: (%s/%Ld) refresh failed, error=%d\n", + dfprintk(PAGECACHE, "nfs_revalidate_inode: (%s/%Lu) refresh failed, error=%d\n", inode->i_sb->s_id, - (long long)NFS_FILEID(inode), status); + (unsigned long long)NFS_FILEID(inode), status); goto err_out; } @@ -919,9 +948,9 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode) nfs_setsecurity(inode, fattr, label); - dfprintk(PAGECACHE, "NFS: (%s/%Ld) revalidation complete\n", + dfprintk(PAGECACHE, "NFS: (%s/%Lu) revalidation complete\n", inode->i_sb->s_id, - (long long)NFS_FILEID(inode)); + (unsigned long long)NFS_FILEID(inode)); err_out: nfs4_label_free(label); @@ -954,9 +983,7 @@ int nfs_attribute_cache_expired(struct inode *inode) */ int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode) { - if (!(NFS_I(inode)->cache_validity & - (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_LABEL)) - && !nfs_attribute_cache_expired(inode)) + if (!nfs_need_revalidate_inode(inode)) return NFS_STALE(inode) ? -ESTALE : 0; return __nfs_revalidate_inode(server, inode); } @@ -977,16 +1004,17 @@ static int nfs_invalidate_mapping(struct inode *inode, struct address_space *map if (ret < 0) return ret; } - spin_lock(&inode->i_lock); - nfsi->cache_validity &= ~NFS_INO_INVALID_DATA; - if (S_ISDIR(inode->i_mode)) + if (S_ISDIR(inode->i_mode)) { + spin_lock(&inode->i_lock); memset(nfsi->cookieverf, 0, sizeof(nfsi->cookieverf)); - spin_unlock(&inode->i_lock); + spin_unlock(&inode->i_lock); + } nfs_inc_stats(inode, NFSIOS_DATAINVALIDATE); nfs_fscache_wait_on_invalidate(inode); - dfprintk(PAGECACHE, "NFS: (%s/%Ld) data cache invalidated\n", - inode->i_sb->s_id, (long long)NFS_FILEID(inode)); + dfprintk(PAGECACHE, "NFS: (%s/%Lu) data cache invalidated\n", + inode->i_sb->s_id, + (unsigned long long)NFS_FILEID(inode)); return 0; } @@ -1007,6 +1035,7 @@ static bool nfs_mapping_need_revalidate_inode(struct inode *inode) int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping) { struct nfs_inode *nfsi = NFS_I(inode); + unsigned long *bitlock = &nfsi->flags; int ret = 0; /* swapfiles are not supposed to be shared. */ @@ -1018,12 +1047,46 @@ int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping) if (ret < 0) goto out; } - if (nfsi->cache_validity & NFS_INO_INVALID_DATA) { - trace_nfs_invalidate_mapping_enter(inode); - ret = nfs_invalidate_mapping(inode, mapping); - trace_nfs_invalidate_mapping_exit(inode, ret); + + /* + * We must clear NFS_INO_INVALID_DATA first to ensure that + * invalidations that come in while we're shooting down the mappings + * are respected. But, that leaves a race window where one revalidator + * can clear the flag, and then another checks it before the mapping + * gets invalidated. Fix that by serializing access to this part of + * the function. + * + * At the same time, we need to allow other tasks to see whether we + * might be in the middle of invalidating the pages, so we only set + * the bit lock here if it looks like we're going to be doing that. + */ + for (;;) { + ret = wait_on_bit(bitlock, NFS_INO_INVALIDATING, + nfs_wait_bit_killable, TASK_KILLABLE); + if (ret) + goto out; + spin_lock(&inode->i_lock); + if (test_bit(NFS_INO_INVALIDATING, bitlock)) { + spin_unlock(&inode->i_lock); + continue; + } + if (nfsi->cache_validity & NFS_INO_INVALID_DATA) + break; + spin_unlock(&inode->i_lock); + goto out; } + set_bit(NFS_INO_INVALIDATING, bitlock); + smp_wmb(); + nfsi->cache_validity &= ~NFS_INO_INVALID_DATA; + spin_unlock(&inode->i_lock); + trace_nfs_invalidate_mapping_enter(inode); + ret = nfs_invalidate_mapping(inode, mapping); + trace_nfs_invalidate_mapping_exit(inode, ret); + + clear_bit_unlock(NFS_INO_INVALIDATING, bitlock); + smp_mb__after_clear_bit(); + wake_up_bit(bitlock, NFS_INO_INVALIDATING); out: return ret; } @@ -1282,12 +1345,28 @@ static int nfs_inode_attrs_need_update(const struct inode *inode, const struct n ((long)nfsi->attr_gencount - (long)nfs_read_attr_generation_counter() > 0); } +/* + * Don't trust the change_attribute, mtime, ctime or size if + * a pnfs LAYOUTCOMMIT is outstanding + */ +static void nfs_inode_attrs_handle_layoutcommit(struct inode *inode, + struct nfs_fattr *fattr) +{ + if (pnfs_layoutcommit_outstanding(inode)) + fattr->valid &= ~(NFS_ATTR_FATTR_CHANGE | + NFS_ATTR_FATTR_MTIME | + NFS_ATTR_FATTR_CTIME | + NFS_ATTR_FATTR_SIZE); +} + static int nfs_refresh_inode_locked(struct inode *inode, struct nfs_fattr *fattr) { int ret; trace_nfs_refresh_inode_enter(inode); + nfs_inode_attrs_handle_layoutcommit(inode, fattr); + if (nfs_inode_attrs_need_update(inode, fattr)) ret = nfs_update_inode(inode, fattr); else @@ -1434,7 +1513,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) unsigned long now = jiffies; unsigned long save_cache_validity; - dfprintk(VFS, "NFS: %s(%s/%ld fh_crc=0x%08x ct=%d info=0x%x)\n", + dfprintk(VFS, "NFS: %s(%s/%lu fh_crc=0x%08x ct=%d info=0x%x)\n", __func__, inode->i_sb->s_id, inode->i_ino, nfs_display_fhandle_hash(NFS_FH(inode)), atomic_read(&inode->i_count), fattr->valid); @@ -1455,7 +1534,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) /* * Big trouble! The inode has become a different object. */ - printk(KERN_DEBUG "NFS: %s: inode %ld mode changed, %07o to %07o\n", + printk(KERN_DEBUG "NFS: %s: inode %lu mode changed, %07o to %07o\n", __func__, inode->i_ino, inode->i_mode, fattr->mode); goto out_err; } @@ -1517,8 +1596,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) if (new_isize != cur_isize) { /* Do we perhaps have any outstanding writes, or has * the file grown beyond our last write? */ - if ((nfsi->npages == 0 && !test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) || - new_isize > cur_isize) { + if ((nfsi->npages == 0) || new_isize > cur_isize) { i_size_write(inode, new_isize); invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; } @@ -1597,7 +1675,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) inode->i_blocks = fattr->du.nfs2.blocks; /* Update attrtimeo value if we're out of the unstable period */ - if (invalid & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_LABEL)) { + if (invalid & NFS_INO_INVALID_ATTR) { nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE); nfsi->attrtimeo = NFS_MINATTRTIMEO(inode); nfsi->attrtimeo_timestamp = now; @@ -1610,7 +1688,6 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) } } invalid &= ~NFS_INO_INVALID_ATTR; - invalid &= ~NFS_INO_INVALID_LABEL; /* Don't invalidate the data if we were to blame */ if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))) @@ -1641,10 +1718,6 @@ struct inode *nfs_alloc_inode(struct super_block *sb) return NULL; nfsi->flags = 0UL; nfsi->cache_validity = 0UL; -#ifdef CONFIG_NFS_V3_ACL - nfsi->acl_access = ERR_PTR(-EAGAIN); - nfsi->acl_default = ERR_PTR(-EAGAIN); -#endif #if IS_ENABLED(CONFIG_NFS_V4) nfsi->nfs4_acl = NULL; #endif /* CONFIG_NFS_V4 */ diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 8b5cc04a8611..dd8bfc2e2464 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -176,7 +176,8 @@ extern struct nfs_server *nfs4_create_server( extern struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *, struct nfs_fh *); extern int nfs4_update_server(struct nfs_server *server, const char *hostname, - struct sockaddr *sap, size_t salen); + struct sockaddr *sap, size_t salen, + struct net *net); extern void nfs_free_server(struct nfs_server *server); extern struct nfs_server *nfs_clone_server(struct nfs_server *, struct nfs_fh *, @@ -279,9 +280,18 @@ static inline void nfs4_label_free(struct nfs4_label *label) } return; } + +static inline void nfs_zap_label_cache_locked(struct nfs_inode *nfsi) +{ + if (nfs_server_capable(&nfsi->vfs_inode, NFS_CAP_SECURITY_LABEL)) + nfsi->cache_validity |= NFS_INO_INVALID_LABEL; +} #else static inline struct nfs4_label *nfs4_label_alloc(struct nfs_server *server, gfp_t flags) { return NULL; } static inline void nfs4_label_free(void *label) {} +static inline void nfs_zap_label_cache_locked(struct nfs_inode *nfsi) +{ +} #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ /* proc.c */ @@ -291,6 +301,7 @@ extern struct nfs_client *nfs_init_client(struct nfs_client *clp, const char *ip_addr); /* dir.c */ +extern void nfs_force_use_readdirplus(struct inode *dir); extern unsigned long nfs_access_cache_count(struct shrinker *shrink, struct shrink_control *sc); extern unsigned long nfs_access_cache_scan(struct shrinker *shrink, @@ -464,6 +475,13 @@ extern int nfs_migrate_page(struct address_space *, #define nfs_migrate_page NULL #endif +/* unlink.c */ +extern struct rpc_task * +nfs_async_rename(struct inode *old_dir, struct inode *new_dir, + struct dentry *old_dentry, struct dentry *new_dentry, + void (*complete)(struct rpc_task *, struct nfs_renamedata *)); +extern int nfs_sillyrename(struct inode *dir, struct dentry *dentry); + /* direct.c */ void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo, struct nfs_direct_req *dreq); diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c index 4a1aafba6a20..871d6eda8dba 100644 --- a/fs/nfs/nfs3acl.c +++ b/fs/nfs/nfs3acl.c @@ -10,179 +10,7 @@ #define NFSDBG_FACILITY NFSDBG_PROC -ssize_t nfs3_listxattr(struct dentry *dentry, char *buffer, size_t size) -{ - struct inode *inode = dentry->d_inode; - struct posix_acl *acl; - int pos=0, len=0; - -# define output(s) do { \ - if (pos + sizeof(s) <= size) { \ - memcpy(buffer + pos, s, sizeof(s)); \ - pos += sizeof(s); \ - } \ - len += sizeof(s); \ - } while(0) - - acl = nfs3_proc_getacl(inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl) { - output("system.posix_acl_access"); - posix_acl_release(acl); - } - - if (S_ISDIR(inode->i_mode)) { - acl = nfs3_proc_getacl(inode, ACL_TYPE_DEFAULT); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl) { - output("system.posix_acl_default"); - posix_acl_release(acl); - } - } - -# undef output - - if (!buffer || len <= size) - return len; - return -ERANGE; -} - -ssize_t nfs3_getxattr(struct dentry *dentry, const char *name, - void *buffer, size_t size) -{ - struct inode *inode = dentry->d_inode; - struct posix_acl *acl; - int type, error = 0; - - if (strcmp(name, POSIX_ACL_XATTR_ACCESS) == 0) - type = ACL_TYPE_ACCESS; - else if (strcmp(name, POSIX_ACL_XATTR_DEFAULT) == 0) - type = ACL_TYPE_DEFAULT; - else - return -EOPNOTSUPP; - - acl = nfs3_proc_getacl(inode, type); - if (IS_ERR(acl)) - return PTR_ERR(acl); - else if (acl) { - if (type == ACL_TYPE_ACCESS && acl->a_count == 0) - error = -ENODATA; - else - error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size); - posix_acl_release(acl); - } else - error = -ENODATA; - - return error; -} - -int nfs3_setxattr(struct dentry *dentry, const char *name, - const void *value, size_t size, int flags) -{ - struct inode *inode = dentry->d_inode; - struct posix_acl *acl; - int type, error; - - if (strcmp(name, POSIX_ACL_XATTR_ACCESS) == 0) - type = ACL_TYPE_ACCESS; - else if (strcmp(name, POSIX_ACL_XATTR_DEFAULT) == 0) - type = ACL_TYPE_DEFAULT; - else - return -EOPNOTSUPP; - - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (IS_ERR(acl)) - return PTR_ERR(acl); - error = nfs3_proc_setacl(inode, type, acl); - posix_acl_release(acl); - - return error; -} - -int nfs3_removexattr(struct dentry *dentry, const char *name) -{ - struct inode *inode = dentry->d_inode; - int type; - - if (strcmp(name, POSIX_ACL_XATTR_ACCESS) == 0) - type = ACL_TYPE_ACCESS; - else if (strcmp(name, POSIX_ACL_XATTR_DEFAULT) == 0) - type = ACL_TYPE_DEFAULT; - else - return -EOPNOTSUPP; - - return nfs3_proc_setacl(inode, type, NULL); -} - -static void __nfs3_forget_cached_acls(struct nfs_inode *nfsi) -{ - if (!IS_ERR(nfsi->acl_access)) { - posix_acl_release(nfsi->acl_access); - nfsi->acl_access = ERR_PTR(-EAGAIN); - } - if (!IS_ERR(nfsi->acl_default)) { - posix_acl_release(nfsi->acl_default); - nfsi->acl_default = ERR_PTR(-EAGAIN); - } -} - -void nfs3_forget_cached_acls(struct inode *inode) -{ - dprintk("NFS: nfs3_forget_cached_acls(%s/%ld)\n", inode->i_sb->s_id, - inode->i_ino); - spin_lock(&inode->i_lock); - __nfs3_forget_cached_acls(NFS_I(inode)); - spin_unlock(&inode->i_lock); -} - -static struct posix_acl *nfs3_get_cached_acl(struct inode *inode, int type) -{ - struct nfs_inode *nfsi = NFS_I(inode); - struct posix_acl *acl = ERR_PTR(-EINVAL); - - spin_lock(&inode->i_lock); - switch(type) { - case ACL_TYPE_ACCESS: - acl = nfsi->acl_access; - break; - - case ACL_TYPE_DEFAULT: - acl = nfsi->acl_default; - break; - - default: - goto out; - } - if (IS_ERR(acl)) - acl = ERR_PTR(-EAGAIN); - else - acl = posix_acl_dup(acl); -out: - spin_unlock(&inode->i_lock); - dprintk("NFS: nfs3_get_cached_acl(%s/%ld, %d) = %p\n", inode->i_sb->s_id, - inode->i_ino, type, acl); - return acl; -} - -static void nfs3_cache_acls(struct inode *inode, struct posix_acl *acl, - struct posix_acl *dfacl) -{ - struct nfs_inode *nfsi = NFS_I(inode); - - dprintk("nfs3_cache_acls(%s/%ld, %p, %p)\n", inode->i_sb->s_id, - inode->i_ino, acl, dfacl); - spin_lock(&inode->i_lock); - __nfs3_forget_cached_acls(NFS_I(inode)); - if (!IS_ERR(acl)) - nfsi->acl_access = posix_acl_dup(acl); - if (!IS_ERR(dfacl)) - nfsi->acl_default = posix_acl_dup(dfacl); - spin_unlock(&inode->i_lock); -} - -struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type) +struct posix_acl *nfs3_get_acl(struct inode *inode, int type) { struct nfs_server *server = NFS_SERVER(inode); struct page *pages[NFSACL_MAXPAGES] = { }; @@ -198,7 +26,6 @@ struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type) .rpc_argp = &args, .rpc_resp = &res, }; - struct posix_acl *acl; int status, count; if (!nfs_server_capable(inode, NFS_CAP_ACLS)) @@ -207,10 +34,6 @@ struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type) status = nfs_revalidate_inode(server, inode); if (status < 0) return ERR_PTR(status); - acl = nfs3_get_cached_acl(inode, type); - if (acl != ERR_PTR(-EAGAIN)) - return acl; - acl = NULL; /* * Only get the access acl when explicitly requested: We don't @@ -257,40 +80,41 @@ struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type) } if (res.acl_access != NULL) { - if (posix_acl_equiv_mode(res.acl_access, NULL) == 0) { + if ((posix_acl_equiv_mode(res.acl_access, NULL) == 0) || + res.acl_access->a_count == 0) { posix_acl_release(res.acl_access); res.acl_access = NULL; } } - nfs3_cache_acls(inode, - (res.mask & NFS_ACL) ? res.acl_access : ERR_PTR(-EINVAL), - (res.mask & NFS_DFACL) ? res.acl_default : ERR_PTR(-EINVAL)); - switch(type) { - case ACL_TYPE_ACCESS: - acl = res.acl_access; - res.acl_access = NULL; - break; + if (res.mask & NFS_ACL) + set_cached_acl(inode, ACL_TYPE_ACCESS, res.acl_access); + else + forget_cached_acl(inode, ACL_TYPE_ACCESS); - case ACL_TYPE_DEFAULT: - acl = res.acl_default; - res.acl_default = NULL; + if (res.mask & NFS_DFACL) + set_cached_acl(inode, ACL_TYPE_DEFAULT, res.acl_default); + else + forget_cached_acl(inode, ACL_TYPE_DEFAULT); + + nfs_free_fattr(res.fattr); + if (type == ACL_TYPE_ACCESS) { + posix_acl_release(res.acl_default); + return res.acl_access; + } else { + posix_acl_release(res.acl_access); + return res.acl_default; } getout: posix_acl_release(res.acl_access); posix_acl_release(res.acl_default); nfs_free_fattr(res.fattr); - - if (status != 0) { - posix_acl_release(acl); - acl = ERR_PTR(status); - } - return acl; + return ERR_PTR(status); } -static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl, - struct posix_acl *dfacl) +static int __nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl, + struct posix_acl *dfacl) { struct nfs_server *server = NFS_SERVER(inode); struct nfs_fattr *fattr; @@ -353,7 +177,8 @@ static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl, switch (status) { case 0: status = nfs_refresh_inode(inode, fattr); - nfs3_cache_acls(inode, acl, dfacl); + set_cached_acl(inode, ACL_TYPE_ACCESS, acl); + set_cached_acl(inode, ACL_TYPE_DEFAULT, dfacl); break; case -EPFNOSUPPORT: case -EPROTONOSUPPORT: @@ -373,40 +198,43 @@ out: return status; } -int nfs3_proc_setacl(struct inode *inode, int type, struct posix_acl *acl) +int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl, + struct posix_acl *dfacl) +{ + int ret; + ret = __nfs3_proc_setacls(inode, acl, dfacl); + return (ret == -EOPNOTSUPP) ? 0 : ret; + +} + +int nfs3_set_acl(struct inode *inode, struct posix_acl *acl, int type) { struct posix_acl *alloc = NULL, *dfacl = NULL; int status; if (S_ISDIR(inode->i_mode)) { switch(type) { - case ACL_TYPE_ACCESS: - alloc = dfacl = nfs3_proc_getacl(inode, - ACL_TYPE_DEFAULT); - if (IS_ERR(alloc)) - goto fail; - break; - - case ACL_TYPE_DEFAULT: - dfacl = acl; - alloc = acl = nfs3_proc_getacl(inode, - ACL_TYPE_ACCESS); - if (IS_ERR(alloc)) - goto fail; - break; + case ACL_TYPE_ACCESS: + alloc = dfacl = get_acl(inode, ACL_TYPE_DEFAULT); + if (IS_ERR(alloc)) + goto fail; + break; - default: - return -EINVAL; + case ACL_TYPE_DEFAULT: + dfacl = acl; + alloc = acl = get_acl(inode, ACL_TYPE_ACCESS); + if (IS_ERR(alloc)) + goto fail; + break; } - } else if (type != ACL_TYPE_ACCESS) - return -EINVAL; + } if (acl == NULL) { alloc = acl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL); if (IS_ERR(alloc)) goto fail; } - status = nfs3_proc_setacls(inode, acl, dfacl); + status = __nfs3_proc_setacls(inode, acl, dfacl); posix_acl_release(alloc); return status; @@ -414,27 +242,8 @@ fail: return PTR_ERR(alloc); } -int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode, - umode_t mode) -{ - struct posix_acl *dfacl, *acl; - int error = 0; - - dfacl = nfs3_proc_getacl(dir, ACL_TYPE_DEFAULT); - if (IS_ERR(dfacl)) { - error = PTR_ERR(dfacl); - return (error == -EOPNOTSUPP) ? 0 : error; - } - if (!dfacl) - return 0; - acl = posix_acl_dup(dfacl); - error = posix_acl_create(&acl, GFP_KERNEL, &mode); - if (error < 0) - goto out_release_dfacl; - error = nfs3_proc_setacls(inode, acl, S_ISDIR(inode->i_mode) ? - dfacl : NULL); - posix_acl_release(acl); -out_release_dfacl: - posix_acl_release(dfacl); - return error; -} +const struct xattr_handler *nfs3_xattr_handlers[] = { + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, + NULL, +}; diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index 01b6f6a49d16..db60149c4579 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -18,6 +18,7 @@ #include <linux/lockd/bind.h> #include <linux/nfs_mount.h> #include <linux/freezer.h> +#include <linux/xattr.h> #include "iostat.h" #include "internal.h" @@ -317,8 +318,8 @@ static int nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, int flags) { + struct posix_acl *default_acl, *acl; struct nfs3_createdata *data; - umode_t mode = sattr->ia_mode; int status = -ENOMEM; dprintk("NFS call create %pd\n", dentry); @@ -340,7 +341,9 @@ nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, data->arg.create.verifier[1] = cpu_to_be32(current->pid); } - sattr->ia_mode &= ~current_umask(); + status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl); + if (status) + goto out; for (;;) { status = nfs3_do_create(dir, dentry, data); @@ -366,7 +369,7 @@ nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, } if (status != 0) - goto out; + goto out_release_acls; /* When we created the file with exclusive semantics, make * sure we set the attributes afterwards. */ @@ -385,9 +388,14 @@ nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, nfs_post_op_update_inode(dentry->d_inode, data->res.fattr); dprintk("NFS reply setattr (post-create): %d\n", status); if (status != 0) - goto out; + goto out_release_acls; } - status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); + + status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl); + +out_release_acls: + posix_acl_release(acl); + posix_acl_release(default_acl); out: nfs3_free_createdata(data); dprintk("NFS reply create: %d\n", status); @@ -471,41 +479,6 @@ nfs3_proc_rename_done(struct rpc_task *task, struct inode *old_dir, } static int -nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name, - struct inode *new_dir, struct qstr *new_name) -{ - struct nfs_renameargs arg = { - .old_dir = NFS_FH(old_dir), - .old_name = old_name, - .new_dir = NFS_FH(new_dir), - .new_name = new_name, - }; - struct nfs_renameres res; - struct rpc_message msg = { - .rpc_proc = &nfs3_procedures[NFS3PROC_RENAME], - .rpc_argp = &arg, - .rpc_resp = &res, - }; - int status = -ENOMEM; - - dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); - - res.old_fattr = nfs_alloc_fattr(); - res.new_fattr = nfs_alloc_fattr(); - if (res.old_fattr == NULL || res.new_fattr == NULL) - goto out; - - status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0); - nfs_post_op_update_inode(old_dir, res.old_fattr); - nfs_post_op_update_inode(new_dir, res.new_fattr); -out: - nfs_free_fattr(res.old_fattr); - nfs_free_fattr(res.new_fattr); - dprintk("NFS reply rename: %d\n", status); - return status; -} - -static int nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) { struct nfs3_linkargs arg = { @@ -572,18 +545,20 @@ out: static int nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) { + struct posix_acl *default_acl, *acl; struct nfs3_createdata *data; - umode_t mode = sattr->ia_mode; int status = -ENOMEM; dprintk("NFS call mkdir %pd\n", dentry); - sattr->ia_mode &= ~current_umask(); - data = nfs3_alloc_createdata(); if (data == NULL) goto out; + status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl); + if (status) + goto out; + data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR]; data->arg.mkdir.fh = NFS_FH(dir); data->arg.mkdir.name = dentry->d_name.name; @@ -592,9 +567,13 @@ nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) status = nfs3_do_create(dir, dentry, data); if (status != 0) - goto out; + goto out_release_acls; - status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); + status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl); + +out_release_acls: + posix_acl_release(acl); + posix_acl_release(default_acl); out: nfs3_free_createdata(data); dprintk("NFS reply mkdir: %d\n", status); @@ -691,19 +670,21 @@ static int nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, dev_t rdev) { + struct posix_acl *default_acl, *acl; struct nfs3_createdata *data; - umode_t mode = sattr->ia_mode; int status = -ENOMEM; dprintk("NFS call mknod %pd %u:%u\n", dentry, MAJOR(rdev), MINOR(rdev)); - sattr->ia_mode &= ~current_umask(); - data = nfs3_alloc_createdata(); if (data == NULL) goto out; + status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl); + if (status) + goto out; + data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD]; data->arg.mknod.fh = NFS_FH(dir); data->arg.mknod.name = dentry->d_name.name; @@ -731,8 +712,13 @@ nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, status = nfs3_do_create(dir, dentry, data); if (status != 0) - goto out; - status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); + goto out_release_acls; + + status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl); + +out_release_acls: + posix_acl_release(acl); + posix_acl_release(default_acl); out: nfs3_free_createdata(data); dprintk("NFS reply mknod: %d\n", status); @@ -904,20 +890,28 @@ static const struct inode_operations nfs3_dir_inode_operations = { .permission = nfs_permission, .getattr = nfs_getattr, .setattr = nfs_setattr, - .listxattr = nfs3_listxattr, - .getxattr = nfs3_getxattr, - .setxattr = nfs3_setxattr, - .removexattr = nfs3_removexattr, +#ifdef CONFIG_NFS_V3_ACL + .listxattr = generic_listxattr, + .getxattr = generic_getxattr, + .setxattr = generic_setxattr, + .removexattr = generic_removexattr, + .get_acl = nfs3_get_acl, + .set_acl = nfs3_set_acl, +#endif }; static const struct inode_operations nfs3_file_inode_operations = { .permission = nfs_permission, .getattr = nfs_getattr, .setattr = nfs_setattr, - .listxattr = nfs3_listxattr, - .getxattr = nfs3_getxattr, - .setxattr = nfs3_setxattr, - .removexattr = nfs3_removexattr, +#ifdef CONFIG_NFS_V3_ACL + .listxattr = generic_listxattr, + .getxattr = generic_getxattr, + .setxattr = generic_setxattr, + .removexattr = generic_removexattr, + .get_acl = nfs3_get_acl, + .set_acl = nfs3_set_acl, +#endif }; const struct nfs_rpc_ops nfs_v3_clientops = { @@ -939,7 +933,6 @@ const struct nfs_rpc_ops nfs_v3_clientops = { .unlink_setup = nfs3_proc_unlink_setup, .unlink_rpc_prepare = nfs3_proc_unlink_rpc_prepare, .unlink_done = nfs3_proc_unlink_done, - .rename = nfs3_proc_rename, .rename_setup = nfs3_proc_rename_setup, .rename_rpc_prepare = nfs3_proc_rename_rpc_prepare, .rename_done = nfs3_proc_rename_done, @@ -965,7 +958,7 @@ const struct nfs_rpc_ops nfs_v3_clientops = { .commit_rpc_prepare = nfs3_proc_commit_rpc_prepare, .commit_done = nfs3_commit_done, .lock = nfs3_proc_lock, - .clear_acl_cache = nfs3_forget_cached_acls, + .clear_acl_cache = forget_all_cached_acls, .close_context = nfs_close_context, .have_delegation = nfs3_have_delegation, .return_delegation = nfs3_return_delegation, diff --git a/fs/nfs/nfs3super.c b/fs/nfs/nfs3super.c index cc471c725230..d6a98949af19 100644 --- a/fs/nfs/nfs3super.c +++ b/fs/nfs/nfs3super.c @@ -12,6 +12,9 @@ static struct nfs_subversion nfs_v3 = { .rpc_vers = &nfs_version3, .rpc_ops = &nfs_v3_clientops, .sops = &nfs_sops, +#ifdef CONFIG_NFS_V3_ACL + .xattr = nfs3_xattr_handlers, +#endif }; static int __init init_nfs_v3(void) diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 5609edc742a0..e1d1badbe53c 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -270,6 +270,7 @@ static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *ser extern int nfs41_setup_sequence(struct nfs4_session *session, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, struct rpc_task *task); +extern int nfs41_sequence_done(struct rpc_task *, struct nfs4_sequence_res *); extern int nfs4_proc_create_session(struct nfs_client *, struct rpc_cred *); extern int nfs4_proc_destroy_session(struct nfs4_session *, struct rpc_cred *); extern int nfs4_proc_get_lease_time(struct nfs_client *clp, @@ -426,6 +427,7 @@ extern void nfs4_close_sync(struct nfs4_state *, fmode_t); extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t); extern void nfs_inode_find_state_and_recover(struct inode *inode, const nfs4_stateid *stateid); +extern int nfs4_state_mark_reclaim_nograce(struct nfs_client *, struct nfs4_state *); extern void nfs4_schedule_lease_recovery(struct nfs_client *); extern int nfs4_wait_clnt_recover(struct nfs_client *clp); extern int nfs4_client_recover_expired_lease(struct nfs_client *clp); @@ -499,6 +501,16 @@ static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_statei return memcmp(dst, src, sizeof(*dst)) == 0; } +static inline bool nfs4_stateid_match_other(const nfs4_stateid *dst, const nfs4_stateid *src) +{ + return memcmp(dst->other, src->other, NFS4_STATEID_OTHER_SIZE) == 0; +} + +static inline bool nfs4_stateid_is_newer(const nfs4_stateid *s1, const nfs4_stateid *s2) +{ + return (s32)(be32_to_cpu(s1->seqid) - be32_to_cpu(s2->seqid)) > 0; +} + static inline bool nfs4_valid_open_stateid(const struct nfs4_state *state) { return test_bit(NFS_STATE_RECOVERY_FAILED, &state->flags) == 0; diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c index b4a160a405ce..aa9ef4876046 100644 --- a/fs/nfs/nfs4client.c +++ b/fs/nfs/nfs4client.c @@ -10,6 +10,7 @@ #include <linux/sunrpc/auth.h> #include <linux/sunrpc/xprt.h> #include <linux/sunrpc/bc_xprt.h> +#include <linux/sunrpc/rpc_pipe_fs.h> #include "internal.h" #include "callback.h" #include "delegation.h" @@ -169,7 +170,7 @@ void nfs41_shutdown_client(struct nfs_client *clp) void nfs40_shutdown_client(struct nfs_client *clp) { if (clp->cl_slot_tbl) { - nfs4_release_slot_table(clp->cl_slot_tbl); + nfs4_shutdown_slot_table(clp->cl_slot_tbl); kfree(clp->cl_slot_tbl); } } @@ -370,6 +371,7 @@ struct nfs_client *nfs4_init_client(struct nfs_client *clp, __set_bit(NFS_CS_INFINITE_SLOTS, &clp->cl_flags); __set_bit(NFS_CS_DISCRTRY, &clp->cl_flags); __set_bit(NFS_CS_NO_RETRANS_TIMEOUT, &clp->cl_flags); + error = nfs_create_rpc_client(clp, timeparms, RPC_AUTH_GSS_KRB5I); if (error == -EINVAL) error = nfs_create_rpc_client(clp, timeparms, RPC_AUTH_UNIX); @@ -409,13 +411,11 @@ struct nfs_client *nfs4_init_client(struct nfs_client *clp, error = nfs4_discover_server_trunking(clp, &old); if (error < 0) goto error; - nfs_put_client(clp); - if (clp != old) { - clp->cl_preserve_clid = true; - clp = old; - } - return clp; + if (clp != old) + clp->cl_preserve_clid = true; + nfs_put_client(clp); + return old; error: nfs_mark_client_ready(clp, error); @@ -493,9 +493,10 @@ int nfs40_walk_client_list(struct nfs_client *new, prev = pos; status = nfs_wait_client_init_complete(pos); - spin_lock(&nn->nfs_client_lock); if (status < 0) - continue; + goto out; + status = -NFS4ERR_STALE_CLIENTID; + spin_lock(&nn->nfs_client_lock); } if (pos->cl_cons_state != NFS_CS_READY) continue; @@ -530,6 +531,13 @@ int nfs40_walk_client_list(struct nfs_client *new, *result = pos; dprintk("NFS: <-- %s using nfs_client = %p ({%d})\n", __func__, pos, atomic_read(&pos->cl_count)); + goto out; + case -ERESTARTSYS: + case -ETIMEDOUT: + /* The callback path may have been inadvertently + * changed. Schedule recovery! + */ + nfs4_schedule_path_down_recovery(pos); default: goto out; } @@ -633,7 +641,8 @@ int nfs41_walk_client_list(struct nfs_client *new, } spin_lock(&nn->nfs_client_lock); if (status < 0) - continue; + break; + status = -NFS4ERR_STALE_CLIENTID; } if (pos->cl_cons_state != NFS_CS_READY) continue; @@ -1133,6 +1142,7 @@ static int nfs_probe_destination(struct nfs_server *server) * @hostname: new end-point's hostname * @sap: new end-point's socket address * @salen: size of "sap" + * @net: net namespace * * The nfs_server must be quiescent before this function is invoked. * Either its session is drained (NFSv4.1+), or its transport is @@ -1141,13 +1151,13 @@ static int nfs_probe_destination(struct nfs_server *server) * Returns zero on success, or a negative errno value. */ int nfs4_update_server(struct nfs_server *server, const char *hostname, - struct sockaddr *sap, size_t salen) + struct sockaddr *sap, size_t salen, struct net *net) { struct nfs_client *clp = server->nfs_client; struct rpc_clnt *clnt = server->client; struct xprt_create xargs = { .ident = clp->cl_proto, - .net = &init_net, + .net = net, .dstaddr = sap, .addrlen = salen, .servername = hostname, @@ -1187,7 +1197,7 @@ int nfs4_update_server(struct nfs_server *server, const char *hostname, error = nfs4_set_client(server, hostname, sap, salen, buf, clp->cl_rpcclient->cl_auth->au_flavor, clp->cl_proto, clnt->cl_timeout, - clp->cl_minorversion, clp->cl_net); + clp->cl_minorversion, net); nfs_put_client(clp); if (error != 0) { nfs_server_insert_lists(server); diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index b86464ba25e1..b9a35c05b60f 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -91,10 +91,10 @@ static void filelayout_reset_write(struct nfs_write_data *data) if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) { dprintk("%s Reset task %5u for i/o through MDS " - "(req %s/%lld, %u bytes @ offset %llu)\n", __func__, + "(req %s/%llu, %u bytes @ offset %llu)\n", __func__, data->task.tk_pid, hdr->inode->i_sb->s_id, - (long long)NFS_FILEID(hdr->inode), + (unsigned long long)NFS_FILEID(hdr->inode), data->args.count, (unsigned long long)data->args.offset); @@ -112,10 +112,10 @@ static void filelayout_reset_read(struct nfs_read_data *data) if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) { dprintk("%s Reset task %5u for i/o through MDS " - "(req %s/%lld, %u bytes @ offset %llu)\n", __func__, + "(req %s/%llu, %u bytes @ offset %llu)\n", __func__, data->task.tk_pid, hdr->inode->i_sb->s_id, - (long long)NFS_FILEID(hdr->inode), + (unsigned long long)NFS_FILEID(hdr->inode), data->args.count, (unsigned long long)data->args.offset); @@ -324,8 +324,9 @@ static void filelayout_read_prepare(struct rpc_task *task, void *data) &rdata->res.seq_res, task)) return; - nfs4_set_rw_stateid(&rdata->args.stateid, rdata->args.context, - rdata->args.lock_context, FMODE_READ); + if (nfs4_set_rw_stateid(&rdata->args.stateid, rdata->args.context, + rdata->args.lock_context, FMODE_READ) == -EIO) + rpc_exit(task, -EIO); /* lost lock, terminate I/O */ } static void filelayout_read_call_done(struct rpc_task *task, void *data) @@ -335,8 +336,10 @@ static void filelayout_read_call_done(struct rpc_task *task, void *data) dprintk("--> %s task->tk_status %d\n", __func__, task->tk_status); if (test_bit(NFS_IOHDR_REDO, &rdata->header->flags) && - task->tk_status == 0) + task->tk_status == 0) { + nfs41_sequence_done(task, &rdata->res.seq_res); return; + } /* Note this may cause RPC to be resent */ rdata->header->mds_ops->rpc_call_done(task, data); @@ -433,8 +436,9 @@ static void filelayout_write_prepare(struct rpc_task *task, void *data) &wdata->res.seq_res, task)) return; - nfs4_set_rw_stateid(&wdata->args.stateid, wdata->args.context, - wdata->args.lock_context, FMODE_WRITE); + if (nfs4_set_rw_stateid(&wdata->args.stateid, wdata->args.context, + wdata->args.lock_context, FMODE_WRITE) == -EIO) + rpc_exit(task, -EIO); /* lost lock, terminate I/O */ } static void filelayout_write_call_done(struct rpc_task *task, void *data) @@ -442,8 +446,10 @@ static void filelayout_write_call_done(struct rpc_task *task, void *data) struct nfs_write_data *wdata = data; if (test_bit(NFS_IOHDR_REDO, &wdata->header->flags) && - task->tk_status == 0) + task->tk_status == 0) { + nfs41_sequence_done(task, &wdata->res.seq_res); return; + } /* Note this may cause RPC to be resent */ wdata->header->mds_ops->rpc_call_done(task, data); @@ -1216,17 +1222,17 @@ static void filelayout_recover_commit_reqs(struct list_head *dst, struct pnfs_commit_bucket *b; int i; - /* NOTE cinfo->lock is NOT held, relying on fact that this is - * only called on single thread per dreq. - * Can't take the lock because need to do pnfs_put_lseg - */ + spin_lock(cinfo->lock); for (i = 0, b = cinfo->ds->buckets; i < cinfo->ds->nbuckets; i++, b++) { if (transfer_commit_list(&b->written, dst, cinfo, 0)) { + spin_unlock(cinfo->lock); pnfs_put_lseg(b->wlseg); b->wlseg = NULL; + spin_lock(cinfo->lock); } } cinfo->ds->nwritten = 0; + spin_unlock(cinfo->lock); } static unsigned int diff --git a/fs/nfs/nfs4filelayoutdev.c b/fs/nfs/nfs4filelayoutdev.c index c7c295e556ed..efac602edb37 100644 --- a/fs/nfs/nfs4filelayoutdev.c +++ b/fs/nfs/nfs4filelayoutdev.c @@ -95,7 +95,7 @@ same_sockaddr(struct sockaddr *addr1, struct sockaddr *addr2) b6 = (struct sockaddr_in6 *)addr2; /* LINKLOCAL addresses must have matching scope_id */ - if (ipv6_addr_scope(&a6->sin6_addr) == + if (ipv6_addr_src_scope(&a6->sin6_addr) == IPV6_ADDR_SCOPE_LINKLOCAL && a6->sin6_scope_id != b6->sin6_scope_id) return false; diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c index 4e7f05d3e9db..3d5dbf80d46a 100644 --- a/fs/nfs/nfs4namespace.c +++ b/fs/nfs/nfs4namespace.c @@ -121,9 +121,8 @@ static int nfs4_validate_fspath(struct dentry *dentry, } static size_t nfs_parse_server_name(char *string, size_t len, - struct sockaddr *sa, size_t salen, struct nfs_server *server) + struct sockaddr *sa, size_t salen, struct net *net) { - struct net *net = rpc_net_ns(server->client); ssize_t ret; ret = rpc_pton(net, string, len, sa, salen); @@ -223,6 +222,7 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata, const struct nfs4_fs_location *location) { const size_t addr_bufsize = sizeof(struct sockaddr_storage); + struct net *net = rpc_net_ns(NFS_SB(mountdata->sb)->client); struct vfsmount *mnt = ERR_PTR(-ENOENT); char *mnt_path; unsigned int maxbuflen; @@ -248,8 +248,7 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata, continue; mountdata->addrlen = nfs_parse_server_name(buf->data, buf->len, - mountdata->addr, addr_bufsize, - NFS_SB(mountdata->sb)); + mountdata->addr, addr_bufsize, net); if (mountdata->addrlen == 0) continue; @@ -419,6 +418,7 @@ static int nfs4_try_replacing_one_location(struct nfs_server *server, const struct nfs4_fs_location *location) { const size_t addr_bufsize = sizeof(struct sockaddr_storage); + struct net *net = rpc_net_ns(server->client); struct sockaddr *sap; unsigned int s; size_t salen; @@ -440,7 +440,7 @@ static int nfs4_try_replacing_one_location(struct nfs_server *server, continue; salen = nfs_parse_server_name(buf->data, buf->len, - sap, addr_bufsize, server); + sap, addr_bufsize, net); if (salen == 0) continue; rpc_set_port(sap, NFS_PORT); @@ -450,7 +450,7 @@ static int nfs4_try_replacing_one_location(struct nfs_server *server, if (hostname == NULL) break; - error = nfs4_update_server(server, hostname, sap, salen); + error = nfs4_update_server(server, hostname, sap, salen, net); kfree(hostname); if (error == 0) break; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 15052b81df42..397be39c6dc8 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -539,7 +539,7 @@ static int nfs40_sequence_done(struct rpc_task *task, struct nfs4_slot *slot = res->sr_slot; struct nfs4_slot_table *tbl; - if (!RPC_WAS_SENT(task)) + if (slot == NULL) goto out; tbl = slot->table; @@ -559,15 +559,10 @@ static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) { struct nfs4_session *session; struct nfs4_slot_table *tbl; + struct nfs4_slot *slot = res->sr_slot; bool send_new_highest_used_slotid = false; - if (!res->sr_slot) { - /* just wake up the next guy waiting since - * we may have not consumed a slot after all */ - dprintk("%s: No slot\n", __func__); - return; - } - tbl = res->sr_slot->table; + tbl = slot->table; session = tbl->session; spin_lock(&tbl->slot_tbl_lock); @@ -577,11 +572,11 @@ static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) if (tbl->highest_used_slotid > tbl->target_highest_slotid) send_new_highest_used_slotid = true; - if (nfs41_wake_and_assign_slot(tbl, res->sr_slot)) { + if (nfs41_wake_and_assign_slot(tbl, slot)) { send_new_highest_used_slotid = false; goto out_unlock; } - nfs4_free_slot(tbl, res->sr_slot); + nfs4_free_slot(tbl, slot); if (tbl->highest_used_slotid != NFS4_NO_SLOT) send_new_highest_used_slotid = false; @@ -592,19 +587,20 @@ out_unlock: nfs41_server_notify_highest_slotid_update(session->clp); } -static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) +int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) { struct nfs4_session *session; - struct nfs4_slot *slot; + struct nfs4_slot *slot = res->sr_slot; struct nfs_client *clp; bool interrupted = false; int ret = 1; + if (slot == NULL) + goto out_noaction; /* don't increment the sequence number if the task wasn't sent */ if (!RPC_WAS_SENT(task)) goto out; - slot = res->sr_slot; session = slot->table->session; if (slot->interrupted) { @@ -679,6 +675,7 @@ out: /* The session may be reset by one of the error handlers. */ dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); nfs41_sequence_free_slot(res); +out_noaction: return ret; retry_nowait: if (rpc_restart_call_prepare(task)) { @@ -692,6 +689,7 @@ out_retry: rpc_delay(task, NFS4_POLL_RETRY_MAX); return 0; } +EXPORT_SYMBOL_GPL(nfs41_sequence_done); static int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) @@ -1070,6 +1068,7 @@ static void nfs4_opendata_free(struct kref *kref) dput(p->dentry); nfs_sb_deactive(sb); nfs_fattr_free_names(&p->f_attr); + kfree(p->f_attr.mdsthreshold); kfree(p); } @@ -1139,12 +1138,71 @@ static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) nfs4_state_set_mode_locked(state, state->state | fmode); } -static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) +static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state) { + struct nfs_client *clp = state->owner->so_server->nfs_client; + bool need_recover = false; + + if (test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags) && state->n_rdonly) + need_recover = true; + if (test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags) && state->n_wronly) + need_recover = true; + if (test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags) && state->n_rdwr) + need_recover = true; + if (need_recover) + nfs4_state_mark_reclaim_nograce(clp, state); +} + +static bool nfs_need_update_open_stateid(struct nfs4_state *state, + nfs4_stateid *stateid) +{ + if (test_and_set_bit(NFS_OPEN_STATE, &state->flags) == 0) + return true; + if (!nfs4_stateid_match_other(stateid, &state->open_stateid)) { + nfs_test_and_clear_all_open_stateid(state); + return true; + } + if (nfs4_stateid_is_newer(stateid, &state->open_stateid)) + return true; + return false; +} + +static void nfs_clear_open_stateid_locked(struct nfs4_state *state, + nfs4_stateid *stateid, fmode_t fmode) +{ + clear_bit(NFS_O_RDWR_STATE, &state->flags); + switch (fmode & (FMODE_READ|FMODE_WRITE)) { + case FMODE_WRITE: + clear_bit(NFS_O_RDONLY_STATE, &state->flags); + break; + case FMODE_READ: + clear_bit(NFS_O_WRONLY_STATE, &state->flags); + break; + case 0: + clear_bit(NFS_O_RDONLY_STATE, &state->flags); + clear_bit(NFS_O_WRONLY_STATE, &state->flags); + clear_bit(NFS_OPEN_STATE, &state->flags); + } + if (stateid == NULL) + return; + if (!nfs_need_update_open_stateid(state, stateid)) + return; if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) nfs4_stateid_copy(&state->stateid, stateid); nfs4_stateid_copy(&state->open_stateid, stateid); - set_bit(NFS_OPEN_STATE, &state->flags); +} + +static void nfs_clear_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) +{ + write_seqlock(&state->seqlock); + nfs_clear_open_stateid_locked(state, stateid, fmode); + write_sequnlock(&state->seqlock); + if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) + nfs4_schedule_state_manager(state->owner->so_server->nfs_client); +} + +static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) +{ switch (fmode) { case FMODE_READ: set_bit(NFS_O_RDONLY_STATE, &state->flags); @@ -1155,13 +1213,11 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid * case FMODE_READ|FMODE_WRITE: set_bit(NFS_O_RDWR_STATE, &state->flags); } -} - -static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) -{ - write_seqlock(&state->seqlock); - nfs_set_open_stateid_locked(state, stateid, fmode); - write_sequnlock(&state->seqlock); + if (!nfs_need_update_open_stateid(state, stateid)) + return; + if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) + nfs4_stateid_copy(&state->stateid, stateid); + nfs4_stateid_copy(&state->open_stateid, stateid); } static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) @@ -1219,6 +1275,8 @@ no_delegation: __update_open_stateid(state, open_stateid, NULL, fmode); ret = 1; } + if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) + nfs4_schedule_state_manager(state->owner->so_server->nfs_client); return ret; } @@ -1452,12 +1510,15 @@ static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state * struct nfs4_state *newstate; int ret; + /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */ + clear_bit(NFS_O_RDWR_STATE, &state->flags); + clear_bit(NFS_O_WRONLY_STATE, &state->flags); + clear_bit(NFS_O_RDONLY_STATE, &state->flags); /* memory barrier prior to reading state->n_* */ clear_bit(NFS_DELEGATED_STATE, &state->flags); clear_bit(NFS_OPEN_STATE, &state->flags); smp_rmb(); if (state->n_rdwr != 0) { - clear_bit(NFS_O_RDWR_STATE, &state->flags); ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); if (ret != 0) return ret; @@ -1465,7 +1526,6 @@ static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state * return -ESTALE; } if (state->n_wronly != 0) { - clear_bit(NFS_O_WRONLY_STATE, &state->flags); ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); if (ret != 0) return ret; @@ -1473,7 +1533,6 @@ static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state * return -ESTALE; } if (state->n_rdonly != 0) { - clear_bit(NFS_O_RDONLY_STATE, &state->flags); ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); if (ret != 0) return ret; @@ -1622,15 +1681,15 @@ static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) { struct nfs4_opendata *data = calldata; - nfs40_setup_sequence(data->o_arg.server, &data->o_arg.seq_args, - &data->o_res.seq_res, task); + nfs40_setup_sequence(data->o_arg.server, &data->c_arg.seq_args, + &data->c_res.seq_res, task); } static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) { struct nfs4_opendata *data = calldata; - nfs40_sequence_done(task, &data->o_res.seq_res); + nfs40_sequence_done(task, &data->c_res.seq_res); data->rpc_status = task->tk_status; if (data->rpc_status == 0) { @@ -1688,7 +1747,7 @@ static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) }; int status; - nfs4_init_sequence(&data->o_arg.seq_args, &data->o_res.seq_res, 1); + nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1); kref_get(&data->kref); data->rpc_done = 0; data->rpc_status = 0; @@ -2246,10 +2305,12 @@ static int _nfs4_do_open(struct inode *dir, } } - if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { - opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); - if (!opendata->f_attr.mdsthreshold) - goto err_free_label; + if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { + if (!opendata->f_attr.mdsthreshold) { + opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); + if (!opendata->f_attr.mdsthreshold) + goto err_free_label; + } opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; } if (dentry->d_inode != NULL) @@ -2277,11 +2338,10 @@ static int _nfs4_do_open(struct inode *dir, if (opendata->file_created) *opened |= FILE_CREATED; - if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) + if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) { *ctx_th = opendata->f_attr.mdsthreshold; - else - kfree(opendata->f_attr.mdsthreshold); - opendata->f_attr.mdsthreshold = NULL; + opendata->f_attr.mdsthreshold = NULL; + } nfs4_label_free(olabel); @@ -2291,7 +2351,6 @@ static int _nfs4_do_open(struct inode *dir, err_free_label: nfs4_label_free(olabel); err_opendata_put: - kfree(opendata->f_attr.mdsthreshold); nfs4_opendata_put(opendata); err_put_state_owner: nfs4_put_state_owner(sp); @@ -2400,13 +2459,16 @@ static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) { /* Use that stateid */ - } else if (truncate && state != NULL && nfs4_valid_open_stateid(state)) { + } else if (truncate && state != NULL) { struct nfs_lockowner lockowner = { .l_owner = current->files, .l_pid = current->tgid, }; - nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, - &lockowner); + if (!nfs4_valid_open_stateid(state)) + return -EBADF; + if (nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, + &lockowner) == -EIO) + return -EBADF; } else nfs4_stateid_copy(&arg.stateid, &zero_stateid); @@ -2478,26 +2540,6 @@ static void nfs4_free_closedata(void *data) kfree(calldata); } -static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, - fmode_t fmode) -{ - spin_lock(&state->owner->so_lock); - clear_bit(NFS_O_RDWR_STATE, &state->flags); - switch (fmode & (FMODE_READ|FMODE_WRITE)) { - case FMODE_WRITE: - clear_bit(NFS_O_RDONLY_STATE, &state->flags); - break; - case FMODE_READ: - clear_bit(NFS_O_WRONLY_STATE, &state->flags); - break; - case 0: - clear_bit(NFS_O_RDONLY_STATE, &state->flags); - clear_bit(NFS_O_WRONLY_STATE, &state->flags); - clear_bit(NFS_OPEN_STATE, &state->flags); - } - spin_unlock(&state->owner->so_lock); -} - static void nfs4_close_done(struct rpc_task *task, void *data) { struct nfs4_closedata *calldata = data; @@ -2516,9 +2558,9 @@ static void nfs4_close_done(struct rpc_task *task, void *data) if (calldata->roc) pnfs_roc_set_barrier(state->inode, calldata->roc_barrier); - nfs_set_open_stateid(state, &calldata->res.stateid, 0); + nfs_clear_open_stateid(state, &calldata->res.stateid, 0); renew_lease(server, calldata->timestamp); - break; + goto out_release; case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_STALE_STATEID: case -NFS4ERR_OLD_STATEID: @@ -2532,7 +2574,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data) goto out_release; } } - nfs4_close_clear_stateid_flags(state, calldata->arg.fmode); + nfs_clear_open_stateid(state, NULL, calldata->arg.fmode); out_release: nfs_release_seqid(calldata->arg.seqid); nfs_refresh_inode(calldata->inode, calldata->res.fattr); @@ -2744,7 +2786,8 @@ static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *f NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| NFS_CAP_CTIME|NFS_CAP_MTIME| NFS_CAP_SECURITY_LABEL); - if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) + if (res.attr_bitmask[0] & FATTR4_WORD0_ACL && + res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) server->caps |= NFS_CAP_ACLS; if (res.has_links != 0) server->caps |= NFS_CAP_HARDLINKS; @@ -3505,49 +3548,6 @@ static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, return 1; } -static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, - struct inode *new_dir, struct qstr *new_name) -{ - struct nfs_server *server = NFS_SERVER(old_dir); - struct nfs_renameargs arg = { - .old_dir = NFS_FH(old_dir), - .new_dir = NFS_FH(new_dir), - .old_name = old_name, - .new_name = new_name, - }; - struct nfs_renameres res = { - .server = server, - }; - struct rpc_message msg = { - .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], - .rpc_argp = &arg, - .rpc_resp = &res, - }; - int status = -ENOMEM; - - status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); - if (!status) { - update_changeattr(old_dir, &res.old_cinfo); - update_changeattr(new_dir, &res.new_cinfo); - } - return status; -} - -static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, - struct inode *new_dir, struct qstr *new_name) -{ - struct nfs4_exception exception = { }; - int err; - do { - err = _nfs4_proc_rename(old_dir, old_name, - new_dir, new_name); - trace_nfs4_rename(old_dir, old_name, new_dir, new_name, err); - err = nfs4_handle_exception(NFS_SERVER(old_dir), err, - &exception); - } while (exception.retry); - return err; -} - static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) { struct nfs_server *server = NFS_SERVER(inode); @@ -4012,8 +4012,9 @@ static bool nfs4_stateid_is_current(nfs4_stateid *stateid, { nfs4_stateid current_stateid; - if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode)) - return false; + /* If the current stateid represents a lost lock, then exit */ + if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode) == -EIO) + return true; return nfs4_stateid_match(stateid, ¤t_stateid); } @@ -4321,9 +4322,7 @@ static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) static inline int nfs4_server_supports_acls(struct nfs_server *server) { - return (server->caps & NFS_CAP_ACLS) - && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) - && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); + return server->caps & NFS_CAP_ACLS; } /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that @@ -4883,6 +4882,20 @@ nfs4_init_uniform_client_string(const struct nfs_client *clp, nodename); } +/* + * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback + * services. Advertise one based on the address family of the + * clientaddr. + */ +static unsigned int +nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len) +{ + if (strchr(clp->cl_ipaddr, ':') != NULL) + return scnprintf(buf, len, "tcp6"); + else + return scnprintf(buf, len, "tcp"); +} + /** * nfs4_proc_setclientid - Negotiate client ID * @clp: state data structure @@ -4924,12 +4937,10 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, setclientid.sc_name, sizeof(setclientid.sc_name)); /* cb_client4 */ - rcu_read_lock(); - setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, - sizeof(setclientid.sc_netid), "%s", - rpc_peeraddr2str(clp->cl_rpcclient, - RPC_DISPLAY_NETID)); - rcu_read_unlock(); + setclientid.sc_netid_len = + nfs4_init_callback_netid(clp, + setclientid.sc_netid, + sizeof(setclientid.sc_netid)); setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, sizeof(setclientid.sc_uaddr), "%s.%u.%u", clp->cl_ipaddr, port >> 8, port & 255); @@ -5831,8 +5842,7 @@ struct nfs_release_lockowner_data { struct nfs4_lock_state *lsp; struct nfs_server *server; struct nfs_release_lockowner_args args; - struct nfs4_sequence_args seq_args; - struct nfs4_sequence_res seq_res; + struct nfs_release_lockowner_res res; unsigned long timestamp; }; @@ -5840,7 +5850,7 @@ static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata { struct nfs_release_lockowner_data *data = calldata; nfs40_setup_sequence(data->server, - &data->seq_args, &data->seq_res, task); + &data->args.seq_args, &data->res.seq_res, task); data->timestamp = jiffies; } @@ -5849,7 +5859,7 @@ static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) struct nfs_release_lockowner_data *data = calldata; struct nfs_server *server = data->server; - nfs40_sequence_done(task, &data->seq_res); + nfs40_sequence_done(task, &data->res.seq_res); switch (task->tk_status) { case 0: @@ -5890,7 +5900,6 @@ static int nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_st data = kmalloc(sizeof(*data), GFP_NOFS); if (!data) return -ENOMEM; - nfs4_init_sequence(&data->seq_args, &data->seq_res, 0); data->lsp = lsp; data->server = server; data->args.lock_owner.clientid = server->nfs_client->cl_clientid; @@ -5898,6 +5907,8 @@ static int nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_st data->args.lock_owner.s_dev = server->s_dev; msg.rpc_argp = &data->args; + msg.rpc_resp = &data->res; + nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); return 0; } @@ -7409,9 +7420,9 @@ static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) struct nfs_server *server = NFS_SERVER(inode); struct pnfs_layout_hdr *lo; struct nfs4_state *state = NULL; - unsigned long timeo, giveup; + unsigned long timeo, now, giveup; - dprintk("--> %s\n", __func__); + dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status); if (!nfs41_sequence_done(task, &lgp->res.seq_res)) goto out; @@ -7419,12 +7430,38 @@ static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) switch (task->tk_status) { case 0: goto out; + /* + * NFS4ERR_LAYOUTTRYLATER is a conflict with another client + * (or clients) writing to the same RAID stripe + */ case -NFS4ERR_LAYOUTTRYLATER: + /* + * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall + * existing layout before getting a new one). + */ case -NFS4ERR_RECALLCONFLICT: timeo = rpc_get_timeout(task->tk_client); giveup = lgp->args.timestamp + timeo; - if (time_after(giveup, jiffies)) - task->tk_status = -NFS4ERR_DELAY; + now = jiffies; + if (time_after(giveup, now)) { + unsigned long delay; + + /* Delay for: + * - Not less then NFS4_POLL_RETRY_MIN. + * - One last time a jiffie before we give up + * - exponential backoff (time_now minus start_attempt) + */ + delay = max_t(unsigned long, NFS4_POLL_RETRY_MIN, + min((giveup - now - 1), + now - lgp->args.timestamp)); + + dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n", + __func__, delay); + rpc_delay(task, delay); + task->tk_status = 0; + rpc_restart_call_prepare(task); + goto out; /* Do not call nfs4_async_handle_error() */ + } break; case -NFS4ERR_EXPIRED: case -NFS4ERR_BAD_STATEID: @@ -7780,10 +7817,7 @@ nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) case -NFS4ERR_BADLAYOUT: /* no layout */ case -NFS4ERR_GRACE: /* loca_recalim always false */ task->tk_status = 0; - break; case 0: - nfs_post_op_update_inode_force_wcc(data->args.inode, - data->res.fattr); break; default: if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { @@ -7798,6 +7832,8 @@ static void nfs4_layoutcommit_release(void *calldata) struct nfs4_layoutcommit_data *data = calldata; pnfs_cleanup_layoutcommit(data); + nfs_post_op_update_inode_force_wcc(data->args.inode, + data->res.fattr); put_rpccred(data->cred); kfree(data); } @@ -7920,7 +7956,7 @@ nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, switch (err) { case 0: case -NFS4ERR_WRONGSEC: - case -NFS4ERR_NOTSUPP: + case -ENOTSUPP: goto out; default: err = nfs4_handle_exception(server, err, &exception); @@ -7954,7 +7990,7 @@ nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, * Fall back on "guess and check" method if * the server doesn't support SECINFO_NO_NAME */ - if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { + if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) { err = nfs4_find_root_sec(server, fhandle, info); goto out_freepage; } @@ -8382,7 +8418,6 @@ const struct nfs_rpc_ops nfs_v4_clientops = { .unlink_setup = nfs4_proc_unlink_setup, .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, .unlink_done = nfs4_proc_unlink_done, - .rename = nfs4_proc_rename, .rename_setup = nfs4_proc_rename_setup, .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, .rename_done = nfs4_proc_rename_done, diff --git a/fs/nfs/nfs4session.c b/fs/nfs/nfs4session.c index cf883c7ae053..e799dc3c3b1d 100644 --- a/fs/nfs/nfs4session.c +++ b/fs/nfs/nfs4session.c @@ -231,14 +231,23 @@ out: return ret; } +/* + * nfs4_release_slot_table - release all slot table entries + */ +static void nfs4_release_slot_table(struct nfs4_slot_table *tbl) +{ + nfs4_shrink_slot_table(tbl, 0); +} + /** - * nfs4_release_slot_table - release resources attached to a slot table + * nfs4_shutdown_slot_table - release resources attached to a slot table * @tbl: slot table to shut down * */ -void nfs4_release_slot_table(struct nfs4_slot_table *tbl) +void nfs4_shutdown_slot_table(struct nfs4_slot_table *tbl) { - nfs4_shrink_slot_table(tbl, 0); + nfs4_release_slot_table(tbl); + rpc_destroy_wait_queue(&tbl->slot_tbl_waitq); } /** @@ -422,7 +431,7 @@ void nfs41_update_target_slotid(struct nfs4_slot_table *tbl, spin_unlock(&tbl->slot_tbl_lock); } -static void nfs4_destroy_session_slot_tables(struct nfs4_session *session) +static void nfs4_release_session_slot_tables(struct nfs4_session *session) { nfs4_release_slot_table(&session->fc_slot_table); nfs4_release_slot_table(&session->bc_slot_table); @@ -450,7 +459,7 @@ int nfs4_setup_session_slot_tables(struct nfs4_session *ses) if (status && tbl->slots == NULL) /* Fore and back channel share a connection so get * both slot tables or neither */ - nfs4_destroy_session_slot_tables(ses); + nfs4_release_session_slot_tables(ses); return status; } @@ -470,6 +479,12 @@ struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) return session; } +static void nfs4_destroy_session_slot_tables(struct nfs4_session *session) +{ + nfs4_shutdown_slot_table(&session->fc_slot_table); + nfs4_shutdown_slot_table(&session->bc_slot_table); +} + void nfs4_destroy_session(struct nfs4_session *session) { struct rpc_xprt *xprt; diff --git a/fs/nfs/nfs4session.h b/fs/nfs/nfs4session.h index 232306100651..b34ada9bc6a2 100644 --- a/fs/nfs/nfs4session.h +++ b/fs/nfs/nfs4session.h @@ -74,7 +74,7 @@ enum nfs4_session_state { extern int nfs4_setup_slot_table(struct nfs4_slot_table *tbl, unsigned int max_reqs, const char *queue); -extern void nfs4_release_slot_table(struct nfs4_slot_table *tbl); +extern void nfs4_shutdown_slot_table(struct nfs4_slot_table *tbl); extern struct nfs4_slot *nfs4_alloc_slot(struct nfs4_slot_table *tbl); extern void nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *slot); extern void nfs4_slot_tbl_drain_complete(struct nfs4_slot_table *tbl); diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 059c01b67a71..2349518eef2c 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -974,9 +974,6 @@ static int nfs4_copy_lock_stateid(nfs4_stateid *dst, else if (lsp != NULL && test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) { nfs4_stateid_copy(dst, &lsp->ls_stateid); ret = 0; - smp_rmb(); - if (!list_empty(&lsp->ls_seqid.list)) - ret = -EWOULDBLOCK; } spin_unlock(&state->state_lock); nfs4_put_lock_state(lsp); @@ -984,10 +981,9 @@ out: return ret; } -static int nfs4_copy_open_stateid(nfs4_stateid *dst, struct nfs4_state *state) +static void nfs4_copy_open_stateid(nfs4_stateid *dst, struct nfs4_state *state) { const nfs4_stateid *src; - int ret; int seq; do { @@ -996,12 +992,7 @@ static int nfs4_copy_open_stateid(nfs4_stateid *dst, struct nfs4_state *state) if (test_bit(NFS_OPEN_STATE, &state->flags)) src = &state->open_stateid; nfs4_stateid_copy(dst, src); - ret = 0; - smp_rmb(); - if (!list_empty(&state->owner->so_seqid.list)) - ret = -EWOULDBLOCK; } while (read_seqretry(&state->seqlock, seq)); - return ret; } /* @@ -1015,15 +1006,19 @@ int nfs4_select_rw_stateid(nfs4_stateid *dst, struct nfs4_state *state, if (ret == -EIO) /* A lost lock - don't even consider delegations */ goto out; - if (nfs4_copy_delegation_stateid(dst, state->inode, fmode)) + /* returns true if delegation stateid found and copied */ + if (nfs4_copy_delegation_stateid(dst, state->inode, fmode)) { + ret = 0; goto out; + } if (ret != -ENOENT) /* nfs4_copy_delegation_stateid() didn't over-write * dst, so it still has the lock stateid which we now * choose to use. */ goto out; - ret = nfs4_copy_open_stateid(dst, state); + nfs4_copy_open_stateid(dst, state); + ret = 0; out: if (nfs_server_capable(state->inode, NFS_CAP_STATEID_NFSV41)) dst->seqid = 0; @@ -1071,7 +1066,7 @@ void nfs_free_seqid(struct nfs_seqid *seqid) /* * Increment the seqid if the OPEN/OPEN_DOWNGRADE/CLOSE succeeded, or * failed with a seqid incrementing error - - * see comments nfs_fs.h:seqid_mutating_error() + * see comments nfs4.h:seqid_mutating_error() */ static void nfs_increment_seqid(int status, struct nfs_seqid *seqid) { @@ -1116,7 +1111,7 @@ void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid) /* * Increment the seqid if the LOCK/LOCKU succeeded, or * failed with a seqid incrementing error - - * see comments nfs_fs.h:seqid_mutating_error() + * see comments nfs4.h:seqid_mutating_error() */ void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid) { @@ -1321,7 +1316,7 @@ static int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_st return 1; } -static int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state) +int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state) { set_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags); clear_bit(NFS_STATE_RECLAIM_REBOOT, &state->flags); @@ -2080,8 +2075,10 @@ again: switch (status) { case 0: break; - case -NFS4ERR_DELAY: case -ETIMEDOUT: + if (clnt->cl_softrtry) + break; + case -NFS4ERR_DELAY: case -EAGAIN: ssleep(1); case -NFS4ERR_STALE_CLIENTID: diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c index 65ab0a0ca1c4..6f340f02f2ba 100644 --- a/fs/nfs/nfs4super.c +++ b/fs/nfs/nfs4super.c @@ -77,17 +77,9 @@ static int nfs4_write_inode(struct inode *inode, struct writeback_control *wbc) { int ret = nfs_write_inode(inode, wbc); - if (ret >= 0 && test_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(inode)->flags)) { - int status; - bool sync = true; - - if (wbc->sync_mode == WB_SYNC_NONE) - sync = false; - - status = pnfs_layoutcommit_inode(inode, sync); - if (status < 0) - return status; - } + if (ret == 0) + ret = pnfs_layoutcommit_inode(inode, + wbc->sync_mode == WB_SYNC_ALL); return ret; } @@ -98,7 +90,7 @@ static int nfs4_write_inode(struct inode *inode, struct writeback_control *wbc) */ static void nfs4_evict_inode(struct inode *inode) { - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); pnfs_return_layout(inode); pnfs_destroy_layout(NFS_I(inode)); diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 5be2868c02f1..73ce8d4fe2c8 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -203,8 +203,7 @@ static int nfs4_stat_to_errno(int); 2 + encode_verifier_maxsz + 5 + \ nfs4_label_maxsz) #define decode_readdir_maxsz (op_decode_hdr_maxsz + \ - decode_verifier_maxsz + \ - nfs4_label_maxsz + nfs4_fattr_maxsz) + decode_verifier_maxsz) #define encode_readlink_maxsz (op_encode_hdr_maxsz) #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1) #define encode_write_maxsz (op_encode_hdr_maxsz + \ @@ -3097,7 +3096,8 @@ out_overflow: return -EIO; } -static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) +static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected, + int *nfs_retval) { __be32 *p; uint32_t opnum; @@ -3107,19 +3107,32 @@ static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) if (unlikely(!p)) goto out_overflow; opnum = be32_to_cpup(p++); - if (opnum != expected) { - dprintk("nfs: Server returned operation" - " %d but we issued a request for %d\n", - opnum, expected); - return -EIO; - } + if (unlikely(opnum != expected)) + goto out_bad_operation; nfserr = be32_to_cpup(p); - if (nfserr != NFS_OK) - return nfs4_stat_to_errno(nfserr); - return 0; + if (nfserr == NFS_OK) + *nfs_retval = 0; + else + *nfs_retval = nfs4_stat_to_errno(nfserr); + return true; +out_bad_operation: + dprintk("nfs: Server returned operation" + " %d but we issued a request for %d\n", + opnum, expected); + *nfs_retval = -EREMOTEIO; + return false; out_overflow: print_overflow_msg(__func__, xdr); - return -EIO; + *nfs_retval = -EIO; + return false; +} + +static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) +{ + int retval; + + __decode_op_hdr(xdr, expected, &retval); + return retval; } /* Dummy routine */ @@ -3435,7 +3448,7 @@ static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint { __be32 *p; - *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL; + *res = 0; if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U))) return -EIO; if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) { @@ -5001,11 +5014,12 @@ static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) uint32_t savewords, bmlen, i; int status; - status = decode_op_hdr(xdr, OP_OPEN); - if (status != -EIO) - nfs_increment_open_seqid(status, res->seqid); - if (!status) - status = decode_stateid(xdr, &res->stateid); + if (!__decode_op_hdr(xdr, OP_OPEN, &status)) + return status; + nfs_increment_open_seqid(status, res->seqid); + if (status) + return status; + status = decode_stateid(xdr, &res->stateid); if (unlikely(status)) return status; diff --git a/fs/nfs/nfstrace.h b/fs/nfs/nfstrace.h index 89fe741e58b1..59f838cdc009 100644 --- a/fs/nfs/nfstrace.h +++ b/fs/nfs/nfstrace.h @@ -36,6 +36,7 @@ __print_flags(v, "|", \ { 1 << NFS_INO_ADVISE_RDPLUS, "ADVISE_RDPLUS" }, \ { 1 << NFS_INO_STALE, "STALE" }, \ + { 1 << NFS_INO_INVALIDATING, "INVALIDATING" }, \ { 1 << NFS_INO_FLUSHING, "FLUSHING" }, \ { 1 << NFS_INO_FSCACHE, "FSCACHE" }, \ { 1 << NFS_INO_COMMIT, "COMMIT" }, \ diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index d75d938d36cb..cb53d450ae32 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -662,7 +662,18 @@ pnfs_destroy_all_layouts(struct nfs_client *clp) */ static bool pnfs_seqid_is_newer(u32 s1, u32 s2) { - return (s32)s1 - (s32)s2 > 0; + return (s32)(s1 - s2) > 0; +} + +static void +pnfs_verify_layout_stateid(struct pnfs_layout_hdr *lo, + const nfs4_stateid *new, + struct list_head *free_me_list) +{ + if (nfs4_stateid_match_other(&lo->plh_stateid, new)) + return; + /* Layout is new! Kill existing layout segments */ + pnfs_mark_matching_lsegs_invalid(lo, free_me_list, NULL); } /* update lo->plh_stateid with new if is more recent */ @@ -1315,6 +1326,7 @@ pnfs_layout_process(struct nfs4_layoutget *lgp) struct nfs4_layoutget_res *res = &lgp->res; struct pnfs_layout_segment *lseg; struct inode *ino = lo->plh_inode; + LIST_HEAD(free_me); int status = 0; /* Inject layout blob into I/O device driver */ @@ -1341,6 +1353,8 @@ pnfs_layout_process(struct nfs4_layoutget *lgp) goto out_forget_reply; } + /* Check that the new stateid matches the old stateid */ + pnfs_verify_layout_stateid(lo, &res->stateid, &free_me); /* Done processing layoutget. Set the layout stateid */ pnfs_set_layout_stateid(lo, &res->stateid, false); @@ -1355,6 +1369,7 @@ pnfs_layout_process(struct nfs4_layoutget *lgp) } spin_unlock(&ino->i_lock); + pnfs_free_lseg_list(&free_me); return lseg; out: return ERR_PTR(status); @@ -1790,6 +1805,15 @@ pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc) } EXPORT_SYMBOL_GPL(pnfs_generic_pg_readpages); +static void pnfs_clear_layoutcommitting(struct inode *inode) +{ + unsigned long *bitlock = &NFS_I(inode)->flags; + + clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); + smp_mb__after_clear_bit(); + wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); +} + /* * There can be multiple RW segments. */ @@ -1807,7 +1831,6 @@ static void pnfs_list_write_lseg(struct inode *inode, struct list_head *listp) static void pnfs_list_write_lseg_done(struct inode *inode, struct list_head *listp) { struct pnfs_layout_segment *lseg, *tmp; - unsigned long *bitlock = &NFS_I(inode)->flags; /* Matched by references in pnfs_set_layoutcommit */ list_for_each_entry_safe(lseg, tmp, listp, pls_lc_list) { @@ -1815,9 +1838,7 @@ static void pnfs_list_write_lseg_done(struct inode *inode, struct list_head *lis pnfs_put_lseg(lseg); } - clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); - smp_mb__after_clear_bit(); - wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); + pnfs_clear_layoutcommitting(inode); } void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg) @@ -1881,43 +1902,37 @@ pnfs_layoutcommit_inode(struct inode *inode, bool sync) struct nfs4_layoutcommit_data *data; struct nfs_inode *nfsi = NFS_I(inode); loff_t end_pos; - int status = 0; + int status; - dprintk("--> %s inode %lu\n", __func__, inode->i_ino); - - if (!test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) + if (!pnfs_layoutcommit_outstanding(inode)) return 0; - /* Note kzalloc ensures data->res.seq_res.sr_slot == NULL */ - data = kzalloc(sizeof(*data), GFP_NOFS); - if (!data) { - status = -ENOMEM; - goto out; - } - - if (!test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) - goto out_free; + dprintk("--> %s inode %lu\n", __func__, inode->i_ino); + status = -EAGAIN; if (test_and_set_bit(NFS_INO_LAYOUTCOMMITTING, &nfsi->flags)) { - if (!sync) { - status = -EAGAIN; - goto out_free; - } - status = wait_on_bit_lock(&nfsi->flags, NFS_INO_LAYOUTCOMMITTING, - nfs_wait_bit_killable, TASK_KILLABLE); + if (!sync) + goto out; + status = wait_on_bit_lock(&nfsi->flags, + NFS_INO_LAYOUTCOMMITTING, + nfs_wait_bit_killable, + TASK_KILLABLE); if (status) - goto out_free; + goto out; } - INIT_LIST_HEAD(&data->lseg_list); + status = -ENOMEM; + /* Note kzalloc ensures data->res.seq_res.sr_slot == NULL */ + data = kzalloc(sizeof(*data), GFP_NOFS); + if (!data) + goto clear_layoutcommitting; + + status = 0; spin_lock(&inode->i_lock); - if (!test_and_clear_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) { - clear_bit(NFS_INO_LAYOUTCOMMITTING, &nfsi->flags); - spin_unlock(&inode->i_lock); - wake_up_bit(&nfsi->flags, NFS_INO_LAYOUTCOMMITTING); - goto out_free; - } + if (!test_and_clear_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) + goto out_unlock; + INIT_LIST_HEAD(&data->lseg_list); pnfs_list_write_lseg(inode, &data->lseg_list); end_pos = nfsi->layout->plh_lwb; @@ -1940,8 +1955,11 @@ out: mark_inode_dirty_sync(inode); dprintk("<-- %s status %d\n", __func__, status); return status; -out_free: +out_unlock: + spin_unlock(&inode->i_lock); kfree(data); +clear_layoutcommitting: + pnfs_clear_layoutcommitting(inode); goto out; } diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index a4f41810a7f4..023793909778 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -359,6 +359,15 @@ pnfs_ld_layoutret_on_setattr(struct inode *inode) PNFS_LAYOUTRET_ON_SETATTR; } +static inline bool +pnfs_layoutcommit_outstanding(struct inode *inode) +{ + struct nfs_inode *nfsi = NFS_I(inode); + + return test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags) != 0 || + test_bit(NFS_INO_LAYOUTCOMMITTING, &nfsi->flags) != 0; +} + static inline int pnfs_return_layout(struct inode *ino) { struct nfs_inode *nfsi = NFS_I(ino); @@ -515,6 +524,13 @@ pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, return false; } +static inline bool +pnfs_layoutcommit_outstanding(struct inode *inode) +{ + return false; +} + + static inline struct nfs4_threshold *pnfs_mdsthreshold_alloc(void) { return NULL; diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index fddbba2d9eff..e55ce9e8b034 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -357,30 +357,6 @@ nfs_proc_rename_done(struct rpc_task *task, struct inode *old_dir, } static int -nfs_proc_rename(struct inode *old_dir, struct qstr *old_name, - struct inode *new_dir, struct qstr *new_name) -{ - struct nfs_renameargs arg = { - .old_dir = NFS_FH(old_dir), - .old_name = old_name, - .new_dir = NFS_FH(new_dir), - .new_name = new_name, - }; - struct rpc_message msg = { - .rpc_proc = &nfs_procedures[NFSPROC_RENAME], - .rpc_argp = &arg, - }; - int status; - - dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); - status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0); - nfs_mark_for_revalidate(old_dir); - nfs_mark_for_revalidate(new_dir); - dprintk("NFS reply rename: %d\n", status); - return status; -} - -static int nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) { struct nfs_linkargs arg = { @@ -745,7 +721,6 @@ const struct nfs_rpc_ops nfs_v2_clientops = { .unlink_setup = nfs_proc_unlink_setup, .unlink_rpc_prepare = nfs_proc_unlink_rpc_prepare, .unlink_done = nfs_proc_unlink_done, - .rename = nfs_proc_rename, .rename_setup = nfs_proc_rename_setup, .rename_rpc_prepare = nfs_proc_rename_rpc_prepare, .rename_done = nfs_proc_rename_done, diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 31db5c366b81..411aedda14bb 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -163,9 +163,9 @@ static void nfs_readpage_release(struct nfs_page *req) unlock_page(req->wb_page); - dprintk("NFS: read done (%s/%Ld %d@%Ld)\n", + dprintk("NFS: read done (%s/%Lu %d@%Ld)\n", req->wb_context->dentry->d_inode->i_sb->s_id, - (long long)NFS_FILEID(req->wb_context->dentry->d_inode), + (unsigned long long)NFS_FILEID(req->wb_context->dentry->d_inode), req->wb_bytes, (long long)req_offset(req)); nfs_release_request(req); @@ -228,11 +228,11 @@ int nfs_initiate_read(struct rpc_clnt *clnt, /* Set up the initial task struct. */ NFS_PROTO(inode)->read_setup(data, &msg); - dprintk("NFS: %5u initiated read call (req %s/%lld, %u bytes @ " + dprintk("NFS: %5u initiated read call (req %s/%llu, %u bytes @ " "offset %llu)\n", data->task.tk_pid, inode->i_sb->s_id, - (long long)NFS_FILEID(inode), + (unsigned long long)NFS_FILEID(inode), data->args.count, (unsigned long long)data->args.offset); @@ -630,9 +630,9 @@ int nfs_readpages(struct file *filp, struct address_space *mapping, unsigned long npages; int ret = -ESTALE; - dprintk("NFS: nfs_readpages (%s/%Ld %d)\n", + dprintk("NFS: nfs_readpages (%s/%Lu %d)\n", inode->i_sb->s_id, - (long long)NFS_FILEID(inode), + (unsigned long long)NFS_FILEID(inode), nr_pages); nfs_inc_stats(inode, NFSIOS_VFSREADPAGES); diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 910ed906eb82..2cb56943e232 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2215,6 +2215,8 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data) struct nfs4_mount_data *options4 = (struct nfs4_mount_data *)raw_data; u32 nfsvers = nfss->nfs_client->rpc_ops->version; + sync_filesystem(sb); + /* * Userspace mount programs that send binary options generally send * them populated with default values. We have no way to know which diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c index 11d78944de79..de54129336c6 100644 --- a/fs/nfs/unlink.c +++ b/fs/nfs/unlink.c @@ -14,6 +14,7 @@ #include <linux/sched.h> #include <linux/wait.h> #include <linux/namei.h> +#include <linux/fsnotify.h> #include "internal.h" #include "nfs4_fs.h" @@ -353,8 +354,8 @@ static void nfs_async_rename_done(struct rpc_task *task, void *calldata) return; } - if (task->tk_status != 0) - nfs_cancel_async_unlink(old_dentry); + if (data->complete) + data->complete(task, data); } /** @@ -399,9 +400,10 @@ static const struct rpc_call_ops nfs_rename_ops = { * * It's expected that valid references to the dentries and inodes are held */ -static struct rpc_task * +struct rpc_task * nfs_async_rename(struct inode *old_dir, struct inode *new_dir, - struct dentry *old_dentry, struct dentry *new_dentry) + struct dentry *old_dentry, struct dentry *new_dentry, + void (*complete)(struct rpc_task *, struct nfs_renamedata *)) { struct nfs_renamedata *data; struct rpc_message msg = { }; @@ -438,6 +440,7 @@ nfs_async_rename(struct inode *old_dir, struct inode *new_dir, data->new_dentry = dget(new_dentry); nfs_fattr_init(&data->old_fattr); nfs_fattr_init(&data->new_fattr); + data->complete = complete; /* set up nfs_renameargs */ data->args.old_dir = NFS_FH(old_dir); @@ -456,6 +459,27 @@ nfs_async_rename(struct inode *old_dir, struct inode *new_dir, return rpc_run_task(&task_setup_data); } +/* + * Perform tasks needed when a sillyrename is done such as cancelling the + * queued async unlink if it failed. + */ +static void +nfs_complete_sillyrename(struct rpc_task *task, struct nfs_renamedata *data) +{ + struct dentry *dentry = data->old_dentry; + + if (task->tk_status != 0) { + nfs_cancel_async_unlink(dentry); + return; + } + + /* + * vfs_unlink and the like do not issue this when a file is + * sillyrenamed, so do it here. + */ + fsnotify_nameremove(dentry, 0); +} + #define SILLYNAME_PREFIX ".nfs" #define SILLYNAME_PREFIX_LEN ((unsigned)sizeof(SILLYNAME_PREFIX) - 1) #define SILLYNAME_FILEID_LEN ((unsigned)sizeof(u64) << 1) @@ -548,7 +572,8 @@ nfs_sillyrename(struct inode *dir, struct dentry *dentry) } /* run the rename task, undo unlink if it fails */ - task = nfs_async_rename(dir, dir, dentry, sdentry); + task = nfs_async_rename(dir, dir, dentry, sdentry, + nfs_complete_sillyrename); if (IS_ERR(task)) { error = -EBUSY; nfs_cancel_async_unlink(dentry); diff --git a/fs/nfs/write.c b/fs/nfs/write.c index c1d548211c31..9a3b6a4cd6b9 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -909,9 +909,14 @@ bool nfs_ctx_key_to_expire(struct nfs_open_context *ctx) */ static bool nfs_write_pageuptodate(struct page *page, struct inode *inode) { + struct nfs_inode *nfsi = NFS_I(inode); + if (nfs_have_delegated_attributes(inode)) goto out; - if (NFS_I(inode)->cache_validity & (NFS_INO_INVALID_DATA|NFS_INO_REVAL_PAGECACHE)) + if (nfsi->cache_validity & (NFS_INO_INVALID_DATA|NFS_INO_REVAL_PAGECACHE)) + return false; + smp_rmb(); + if (test_bit(NFS_INO_INVALIDATING, &nfsi->flags)) return false; out: return PageUptodate(page) != 0; @@ -922,19 +927,20 @@ out: * extend the write to cover the entire page in order to avoid fragmentation * inefficiencies. * - * If the file is opened for synchronous writes or if we have a write delegation - * from the server then we can just skip the rest of the checks. + * If the file is opened for synchronous writes then we can just skip the rest + * of the checks. */ static int nfs_can_extend_write(struct file *file, struct page *page, struct inode *inode) { if (file->f_flags & O_DSYNC) return 0; + if (!nfs_write_pageuptodate(page, inode)) + return 0; if (NFS_PROTO(inode)->have_delegation(inode, FMODE_WRITE)) return 1; - if (nfs_write_pageuptodate(page, inode) && (inode->i_flock == NULL || - (inode->i_flock->fl_start == 0 && + if (inode->i_flock == NULL || (inode->i_flock->fl_start == 0 && inode->i_flock->fl_end == OFFSET_MAX && - inode->i_flock->fl_type != F_RDLCK))) + inode->i_flock->fl_type != F_RDLCK)) return 1; return 0; } @@ -1013,10 +1019,10 @@ int nfs_initiate_write(struct rpc_clnt *clnt, NFS_PROTO(inode)->write_setup(data, &msg); dprintk("NFS: %5u initiated write call " - "(req %s/%lld, %u bytes @ offset %llu)\n", + "(req %s/%llu, %u bytes @ offset %llu)\n", data->task.tk_pid, inode->i_sb->s_id, - (long long)NFS_FILEID(inode), + (unsigned long long)NFS_FILEID(inode), data->args.count, (unsigned long long)data->args.offset); @@ -1606,9 +1612,9 @@ static void nfs_commit_release_pages(struct nfs_commit_data *data) nfs_list_remove_request(req); nfs_clear_page_commit(req->wb_page); - dprintk("NFS: commit (%s/%lld %d@%lld)", + dprintk("NFS: commit (%s/%llu %d@%lld)", req->wb_context->dentry->d_sb->s_id, - (long long)NFS_FILEID(req->wb_context->dentry->d_inode), + (unsigned long long)NFS_FILEID(req->wb_context->dentry->d_inode), req->wb_bytes, (long long)req_offset(req)); if (status < 0) { diff --git a/fs/nfsd/acl.h b/fs/nfsd/acl.h index 8b186a4955cc..b481e1f5eecc 100644 --- a/fs/nfsd/acl.h +++ b/fs/nfsd/acl.h @@ -35,23 +35,25 @@ #ifndef LINUX_NFS4_ACL_H #define LINUX_NFS4_ACL_H -#include <linux/posix_acl.h> +struct nfs4_acl; +struct svc_fh; +struct svc_rqst; -/* Maximum ACL we'll accept from client; chosen (somewhat arbitrarily) to - * fit in a page: */ -#define NFS4_ACL_MAX 170 +/* + * Maximum ACL we'll accept from a client; chosen (somewhat + * arbitrarily) so that kmalloc'ing the ACL shouldn't require a + * high-order allocation. This allows 204 ACEs on x86_64: + */ +#define NFS4_ACL_MAX ((PAGE_SIZE - sizeof(struct nfs4_acl)) \ + / sizeof(struct nfs4_ace)) struct nfs4_acl *nfs4_acl_new(int); int nfs4_acl_get_whotype(char *, u32); -int nfs4_acl_write_who(int who, char *p); - -#define NFS4_ACL_TYPE_DEFAULT 0x01 -#define NFS4_ACL_DIR 0x02 -#define NFS4_ACL_OWNER 0x04 +__be32 nfs4_acl_write_who(int who, __be32 **p, int *len); -struct nfs4_acl *nfs4_acl_posix_to_nfsv4(struct posix_acl *, - struct posix_acl *, unsigned int flags); -int nfs4_acl_nfsv4_to_posix(struct nfs4_acl *, struct posix_acl **, - struct posix_acl **, unsigned int flags); +int nfsd4_get_nfs4_acl(struct svc_rqst *rqstp, struct dentry *dentry, + struct nfs4_acl **acl); +__be32 nfsd4_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp, + struct nfs4_acl *acl); #endif /* LINUX_NFS4_ACL_H */ diff --git a/fs/nfsd/auth.c b/fs/nfsd/auth.c index 06cddd572264..2645be435e75 100644 --- a/fs/nfsd/auth.c +++ b/fs/nfsd/auth.c @@ -71,10 +71,8 @@ int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp) if (gid_eq(new->fsgid, INVALID_GID)) new->fsgid = exp->ex_anon_gid; - ret = set_groups(new, gi); + set_groups(new, gi); put_group_info(gi); - if (ret < 0) - goto error; if (!uid_eq(new->fsuid, GLOBAL_ROOT_UID)) new->cap_effective = cap_drop_nfsd_set(new->cap_effective); @@ -89,7 +87,6 @@ int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp) oom: ret = -ENOMEM; -error: abort_creds(new); return ret; } diff --git a/fs/nfsd/cache.h b/fs/nfsd/cache.h index d5c5b3e00266..b582f9ab6b2a 100644 --- a/fs/nfsd/cache.h +++ b/fs/nfsd/cache.h @@ -84,12 +84,4 @@ int nfsd_cache_lookup(struct svc_rqst *); void nfsd_cache_update(struct svc_rqst *, int, __be32 *); int nfsd_reply_cache_stats_open(struct inode *, struct file *); -#ifdef CONFIG_NFSD_V4 -void nfsd4_set_statp(struct svc_rqst *rqstp, __be32 *statp); -#else /* CONFIG_NFSD_V4 */ -static inline void nfsd4_set_statp(struct svc_rqst *rqstp, __be32 *statp) -{ -} -#endif /* CONFIG_NFSD_V4 */ - #endif /* NFSCACHE_H */ diff --git a/fs/nfsd/idmap.h b/fs/nfsd/idmap.h index bf95f6b817a4..66e58db01936 100644 --- a/fs/nfsd/idmap.h +++ b/fs/nfsd/idmap.h @@ -56,7 +56,7 @@ static inline void nfsd_idmap_shutdown(struct net *net) __be32 nfsd_map_name_to_uid(struct svc_rqst *, const char *, size_t, kuid_t *); __be32 nfsd_map_name_to_gid(struct svc_rqst *, const char *, size_t, kgid_t *); -int nfsd_map_uid_to_name(struct svc_rqst *, kuid_t, char *); -int nfsd_map_gid_to_name(struct svc_rqst *, kgid_t, char *); +__be32 nfsd4_encode_user(struct svc_rqst *, kuid_t, __be32 **, int *); +__be32 nfsd4_encode_group(struct svc_rqst *, kgid_t, __be32 **, int *); #endif /* LINUX_NFSD_IDMAP_H */ diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h index 849a7c3ced22..d32b3aa6600d 100644 --- a/fs/nfsd/netns.h +++ b/fs/nfsd/netns.h @@ -95,6 +95,7 @@ struct nfsd_net { time_t nfsd4_grace; bool nfsd_net_up; + bool lockd_up; /* * Time of server startup diff --git a/fs/nfsd/nfs2acl.c b/fs/nfsd/nfs2acl.c index 95d76dc6c5da..11c1fba29312 100644 --- a/fs/nfsd/nfs2acl.c +++ b/fs/nfsd/nfs2acl.c @@ -30,8 +30,9 @@ nfsacld_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) static __be32 nfsacld_proc_getacl(struct svc_rqst * rqstp, struct nfsd3_getaclargs *argp, struct nfsd3_getaclres *resp) { - svc_fh *fh; struct posix_acl *acl; + struct inode *inode; + svc_fh *fh; __be32 nfserr = 0; dprintk("nfsd: GETACL(2acl) %s\n", SVCFH_fmt(&argp->fh)); @@ -41,6 +42,8 @@ static __be32 nfsacld_proc_getacl(struct svc_rqst * rqstp, if (nfserr) RETURN_STATUS(nfserr); + inode = fh->fh_dentry->d_inode; + if (argp->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) RETURN_STATUS(nfserr_inval); resp->mask = argp->mask; @@ -50,21 +53,13 @@ static __be32 nfsacld_proc_getacl(struct svc_rqst * rqstp, goto fail; if (resp->mask & (NFS_ACL|NFS_ACLCNT)) { - acl = nfsd_get_posix_acl(fh, ACL_TYPE_ACCESS); + acl = get_acl(inode, ACL_TYPE_ACCESS); if (IS_ERR(acl)) { - int err = PTR_ERR(acl); - - if (err == -ENODATA || err == -EOPNOTSUPP) - acl = NULL; - else { - nfserr = nfserrno(err); - goto fail; - } + nfserr = nfserrno(PTR_ERR(acl)); + goto fail; } if (acl == NULL) { /* Solaris returns the inode's minimum ACL. */ - - struct inode *inode = fh->fh_dentry->d_inode; acl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL); } resp->acl_access = acl; @@ -72,17 +67,10 @@ static __be32 nfsacld_proc_getacl(struct svc_rqst * rqstp, if (resp->mask & (NFS_DFACL|NFS_DFACLCNT)) { /* Check how Solaris handles requests for the Default ACL of a non-directory! */ - - acl = nfsd_get_posix_acl(fh, ACL_TYPE_DEFAULT); + acl = get_acl(inode, ACL_TYPE_DEFAULT); if (IS_ERR(acl)) { - int err = PTR_ERR(acl); - - if (err == -ENODATA || err == -EOPNOTSUPP) - acl = NULL; - else { - nfserr = nfserrno(err); - goto fail; - } + nfserr = nfserrno(PTR_ERR(acl)); + goto fail; } resp->acl_default = acl; } @@ -103,31 +91,51 @@ static __be32 nfsacld_proc_setacl(struct svc_rqst * rqstp, struct nfsd3_setaclargs *argp, struct nfsd_attrstat *resp) { + struct inode *inode; svc_fh *fh; __be32 nfserr = 0; + int error; dprintk("nfsd: SETACL(2acl) %s\n", SVCFH_fmt(&argp->fh)); fh = fh_copy(&resp->fh, &argp->fh); nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_SATTR); + if (nfserr) + goto out; - if (!nfserr) { - nfserr = nfserrno( nfsd_set_posix_acl( - fh, ACL_TYPE_ACCESS, argp->acl_access) ); - } - if (!nfserr) { - nfserr = nfserrno( nfsd_set_posix_acl( - fh, ACL_TYPE_DEFAULT, argp->acl_default) ); - } - if (!nfserr) { - nfserr = fh_getattr(fh, &resp->stat); + inode = fh->fh_dentry->d_inode; + if (!IS_POSIXACL(inode) || !inode->i_op->set_acl) { + error = -EOPNOTSUPP; + goto out_errno; } + error = fh_want_write(fh); + if (error) + goto out_errno; + + error = inode->i_op->set_acl(inode, argp->acl_access, ACL_TYPE_ACCESS); + if (error) + goto out_drop_write; + error = inode->i_op->set_acl(inode, argp->acl_default, + ACL_TYPE_DEFAULT); + if (error) + goto out_drop_write; + + fh_drop_write(fh); + + nfserr = fh_getattr(fh, &resp->stat); + +out: /* argp->acl_{access,default} may have been allocated in nfssvc_decode_setaclargs. */ posix_acl_release(argp->acl_access); posix_acl_release(argp->acl_default); return nfserr; +out_drop_write: + fh_drop_write(fh); +out_errno: + nfserr = nfserrno(error); + goto out; } /* diff --git a/fs/nfsd/nfs3acl.c b/fs/nfsd/nfs3acl.c index 9cbc1a841f87..adc5f1b1dc26 100644 --- a/fs/nfsd/nfs3acl.c +++ b/fs/nfsd/nfs3acl.c @@ -29,8 +29,9 @@ nfsd3_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) static __be32 nfsd3_proc_getacl(struct svc_rqst * rqstp, struct nfsd3_getaclargs *argp, struct nfsd3_getaclres *resp) { - svc_fh *fh; struct posix_acl *acl; + struct inode *inode; + svc_fh *fh; __be32 nfserr = 0; fh = fh_copy(&resp->fh, &argp->fh); @@ -38,26 +39,20 @@ static __be32 nfsd3_proc_getacl(struct svc_rqst * rqstp, if (nfserr) RETURN_STATUS(nfserr); + inode = fh->fh_dentry->d_inode; + if (argp->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) RETURN_STATUS(nfserr_inval); resp->mask = argp->mask; if (resp->mask & (NFS_ACL|NFS_ACLCNT)) { - acl = nfsd_get_posix_acl(fh, ACL_TYPE_ACCESS); + acl = get_acl(inode, ACL_TYPE_ACCESS); if (IS_ERR(acl)) { - int err = PTR_ERR(acl); - - if (err == -ENODATA || err == -EOPNOTSUPP) - acl = NULL; - else { - nfserr = nfserrno(err); - goto fail; - } + nfserr = nfserrno(PTR_ERR(acl)); + goto fail; } if (acl == NULL) { /* Solaris returns the inode's minimum ACL. */ - - struct inode *inode = fh->fh_dentry->d_inode; acl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL); } resp->acl_access = acl; @@ -65,17 +60,10 @@ static __be32 nfsd3_proc_getacl(struct svc_rqst * rqstp, if (resp->mask & (NFS_DFACL|NFS_DFACLCNT)) { /* Check how Solaris handles requests for the Default ACL of a non-directory! */ - - acl = nfsd_get_posix_acl(fh, ACL_TYPE_DEFAULT); + acl = get_acl(inode, ACL_TYPE_DEFAULT); if (IS_ERR(acl)) { - int err = PTR_ERR(acl); - - if (err == -ENODATA || err == -EOPNOTSUPP) - acl = NULL; - else { - nfserr = nfserrno(err); - goto fail; - } + nfserr = nfserrno(PTR_ERR(acl)); + goto fail; } resp->acl_default = acl; } @@ -96,21 +84,37 @@ static __be32 nfsd3_proc_setacl(struct svc_rqst * rqstp, struct nfsd3_setaclargs *argp, struct nfsd3_attrstat *resp) { + struct inode *inode; svc_fh *fh; __be32 nfserr = 0; + int error; fh = fh_copy(&resp->fh, &argp->fh); nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_SATTR); + if (nfserr) + goto out; - if (!nfserr) { - nfserr = nfserrno( nfsd_set_posix_acl( - fh, ACL_TYPE_ACCESS, argp->acl_access) ); - } - if (!nfserr) { - nfserr = nfserrno( nfsd_set_posix_acl( - fh, ACL_TYPE_DEFAULT, argp->acl_default) ); + inode = fh->fh_dentry->d_inode; + if (!IS_POSIXACL(inode) || !inode->i_op->set_acl) { + error = -EOPNOTSUPP; + goto out_errno; } + error = fh_want_write(fh); + if (error) + goto out_errno; + + error = inode->i_op->set_acl(inode, argp->acl_access, ACL_TYPE_ACCESS); + if (error) + goto out_drop_write; + error = inode->i_op->set_acl(inode, argp->acl_default, + ACL_TYPE_DEFAULT); + +out_drop_write: + fh_drop_write(fh); +out_errno: + nfserr = nfserrno(error); +out: /* argp->acl_{access,default} may have been allocated in nfs3svc_decode_setaclargs. */ posix_acl_release(argp->acl_access); diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c index 14d9ecb96cff..de6e39e12cb3 100644 --- a/fs/nfsd/nfs3xdr.c +++ b/fs/nfsd/nfs3xdr.c @@ -168,7 +168,7 @@ encode_fattr3(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp, struct kstat *stat) { *p++ = htonl(nfs3_ftypes[(stat->mode & S_IFMT) >> 12]); - *p++ = htonl((u32) stat->mode); + *p++ = htonl((u32) (stat->mode & S_IALLUGO)); *p++ = htonl((u32) stat->nlink); *p++ = htonl((u32) from_kuid(&init_user_ns, stat->uid)); *p++ = htonl((u32) from_kgid(&init_user_ns, stat->gid)); @@ -842,21 +842,21 @@ out: static __be32 *encode_entryplus_baggage(struct nfsd3_readdirres *cd, __be32 *p, const char *name, int namlen) { - struct svc_fh fh; + struct svc_fh *fh = &cd->scratch; __be32 err; - fh_init(&fh, NFS3_FHSIZE); - err = compose_entry_fh(cd, &fh, name, namlen); + fh_init(fh, NFS3_FHSIZE); + err = compose_entry_fh(cd, fh, name, namlen); if (err) { *p++ = 0; *p++ = 0; goto out; } - p = encode_post_op_attr(cd->rqstp, p, &fh); + p = encode_post_op_attr(cd->rqstp, p, fh); *p++ = xdr_one; /* yes, a file handle follows */ - p = encode_fh(p, &fh); + p = encode_fh(p, fh); out: - fh_put(&fh); + fh_put(fh); return p; } diff --git a/fs/nfsd/nfs4acl.c b/fs/nfsd/nfs4acl.c index 8a50b3c18093..6f3f392d48af 100644 --- a/fs/nfsd/nfs4acl.c +++ b/fs/nfsd/nfs4acl.c @@ -37,8 +37,14 @@ #include <linux/slab.h> #include <linux/nfs_fs.h> #include <linux/export.h> +#include "nfsfh.h" +#include "nfsd.h" #include "acl.h" +#include "vfs.h" +#define NFS4_ACL_TYPE_DEFAULT 0x01 +#define NFS4_ACL_DIR 0x02 +#define NFS4_ACL_OWNER 0x04 /* mode bit translations: */ #define NFS4_READ_MODE (NFS4_ACE_READ_DATA) @@ -130,36 +136,47 @@ static short ace2type(struct nfs4_ace *); static void _posix_to_nfsv4_one(struct posix_acl *, struct nfs4_acl *, unsigned int); -struct nfs4_acl * -nfs4_acl_posix_to_nfsv4(struct posix_acl *pacl, struct posix_acl *dpacl, - unsigned int flags) +int +nfsd4_get_nfs4_acl(struct svc_rqst *rqstp, struct dentry *dentry, + struct nfs4_acl **acl) { - struct nfs4_acl *acl; + struct inode *inode = dentry->d_inode; + int error = 0; + struct posix_acl *pacl = NULL, *dpacl = NULL; + unsigned int flags = 0; int size = 0; - if (pacl) { - if (posix_acl_valid(pacl) < 0) - return ERR_PTR(-EINVAL); - size += 2*pacl->a_count; + pacl = get_acl(inode, ACL_TYPE_ACCESS); + if (!pacl) { + pacl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL); + if (IS_ERR(pacl)) + return PTR_ERR(pacl); } - if (dpacl) { - if (posix_acl_valid(dpacl) < 0) - return ERR_PTR(-EINVAL); - size += 2*dpacl->a_count; + /* allocate for worst case: one (deny, allow) pair each: */ + size += 2 * pacl->a_count; + + if (S_ISDIR(inode->i_mode)) { + flags = NFS4_ACL_DIR; + dpacl = get_acl(inode, ACL_TYPE_DEFAULT); + if (dpacl) + size += 2 * dpacl->a_count; } - /* Allocate for worst case: one (deny, allow) pair each: */ - acl = nfs4_acl_new(size); - if (acl == NULL) - return ERR_PTR(-ENOMEM); + *acl = nfs4_acl_new(size); + if (*acl == NULL) { + error = -ENOMEM; + goto out; + } - if (pacl) - _posix_to_nfsv4_one(pacl, acl, flags & ~NFS4_ACL_TYPE_DEFAULT); + _posix_to_nfsv4_one(pacl, *acl, flags & ~NFS4_ACL_TYPE_DEFAULT); if (dpacl) - _posix_to_nfsv4_one(dpacl, acl, flags | NFS4_ACL_TYPE_DEFAULT); + _posix_to_nfsv4_one(dpacl, *acl, flags | NFS4_ACL_TYPE_DEFAULT); - return acl; + out: + posix_acl_release(pacl); + posix_acl_release(dpacl); + return error; } struct posix_acl_summary { @@ -525,7 +542,10 @@ posix_state_to_acl(struct posix_acl_state *state, unsigned int flags) * up setting a 3-element effective posix ACL with all * permissions zero. */ - nace = 4 + state->users->n + state->groups->n; + if (!state->users->n && !state->groups->n) + nace = 3; + else /* Note we also include a MASK ACE in this case: */ + nace = 4 + state->users->n + state->groups->n; pacl = posix_acl_alloc(nace, GFP_KERNEL); if (!pacl) return ERR_PTR(-ENOMEM); @@ -569,9 +589,11 @@ posix_state_to_acl(struct posix_acl_state *state, unsigned int flags) add_to_mask(state, &state->groups->aces[i].perms); } - pace++; - pace->e_tag = ACL_MASK; - low_mode_from_nfs4(state->mask.allow, &pace->e_perm, flags); + if (!state->users->n && !state->groups->n) { + pace++; + pace->e_tag = ACL_MASK; + low_mode_from_nfs4(state->mask.allow, &pace->e_perm, flags); + } pace++; pace->e_tag = ACL_OTHER; @@ -719,8 +741,9 @@ static void process_one_v4_ace(struct posix_acl_state *state, } } -int nfs4_acl_nfsv4_to_posix(struct nfs4_acl *acl, struct posix_acl **pacl, - struct posix_acl **dpacl, unsigned int flags) +static int nfs4_acl_nfsv4_to_posix(struct nfs4_acl *acl, + struct posix_acl **pacl, struct posix_acl **dpacl, + unsigned int flags) { struct posix_acl_state effective_acl_state, default_acl_state; struct nfs4_ace *ace; @@ -780,6 +803,57 @@ out_estate: return ret; } +__be32 +nfsd4_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp, + struct nfs4_acl *acl) +{ + __be32 error; + int host_error; + struct dentry *dentry; + struct inode *inode; + struct posix_acl *pacl = NULL, *dpacl = NULL; + unsigned int flags = 0; + + /* Get inode */ + error = fh_verify(rqstp, fhp, 0, NFSD_MAY_SATTR); + if (error) + return error; + + dentry = fhp->fh_dentry; + inode = dentry->d_inode; + + if (!inode->i_op->set_acl || !IS_POSIXACL(inode)) + return nfserr_attrnotsupp; + + if (S_ISDIR(inode->i_mode)) + flags = NFS4_ACL_DIR; + + host_error = nfs4_acl_nfsv4_to_posix(acl, &pacl, &dpacl, flags); + if (host_error == -EINVAL) + return nfserr_attrnotsupp; + if (host_error < 0) + goto out_nfserr; + + host_error = inode->i_op->set_acl(inode, pacl, ACL_TYPE_ACCESS); + if (host_error < 0) + goto out_release; + + if (S_ISDIR(inode->i_mode)) { + host_error = inode->i_op->set_acl(inode, dpacl, + ACL_TYPE_DEFAULT); + } + +out_release: + posix_acl_release(pacl); + posix_acl_release(dpacl); +out_nfserr: + if (host_error == -EOPNOTSUPP) + return nfserr_attrnotsupp; + else + return nfserrno(host_error); +} + + static short ace2type(struct nfs4_ace *ace) { @@ -798,9 +872,6 @@ ace2type(struct nfs4_ace *ace) return -1; } -EXPORT_SYMBOL(nfs4_acl_posix_to_nfsv4); -EXPORT_SYMBOL(nfs4_acl_nfsv4_to_posix); - struct nfs4_acl * nfs4_acl_new(int n) { @@ -848,21 +919,22 @@ nfs4_acl_get_whotype(char *p, u32 len) return NFS4_ACL_WHO_NAMED; } -int -nfs4_acl_write_who(int who, char *p) +__be32 nfs4_acl_write_who(int who, __be32 **p, int *len) { int i; + int bytes; for (i = 0; i < ARRAY_SIZE(s2t_map); i++) { - if (s2t_map[i].type == who) { - memcpy(p, s2t_map[i].string, s2t_map[i].stringlen); - return s2t_map[i].stringlen; - } + if (s2t_map[i].type != who) + continue; + bytes = 4 + (XDR_QUADLEN(s2t_map[i].stringlen) << 2); + if (bytes > *len) + return nfserr_resource; + *p = xdr_encode_opaque(*p, s2t_map[i].string, + s2t_map[i].stringlen); + *len -= bytes; + return 0; } - BUG(); + WARN_ON_ONCE(1); return -1; } - -EXPORT_SYMBOL(nfs4_acl_new); -EXPORT_SYMBOL(nfs4_acl_get_whotype); -EXPORT_SYMBOL(nfs4_acl_write_who); diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index 7f05cd140de3..39c8ef875f91 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -32,6 +32,7 @@ */ #include <linux/sunrpc/clnt.h> +#include <linux/sunrpc/xprt.h> #include <linux/sunrpc/svc_xprt.h> #include <linux/slab.h> #include "nfsd.h" @@ -635,6 +636,22 @@ static struct rpc_cred *get_backchannel_cred(struct nfs4_client *clp, struct rpc } } +static struct rpc_clnt *create_backchannel_client(struct rpc_create_args *args) +{ + struct rpc_xprt *xprt; + + if (args->protocol != XPRT_TRANSPORT_BC_TCP) + return rpc_create(args); + + xprt = args->bc_xprt->xpt_bc_xprt; + if (xprt) { + xprt_get(xprt); + return rpc_create_xprt(args, xprt); + } + + return rpc_create(args); +} + static int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *conn, struct nfsd4_session *ses) { struct rpc_timeout timeparms = { @@ -674,7 +691,7 @@ static int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *c args.authflavor = ses->se_cb_sec.flavor; } /* Create RPC client */ - client = rpc_create(&args); + client = create_backchannel_client(&args); if (IS_ERR(client)) { dprintk("NFSD: couldn't create callback client: %ld\n", PTR_ERR(client)); diff --git a/fs/nfsd/nfs4idmap.c b/fs/nfsd/nfs4idmap.c index 4832fd819f88..c0dfde68742e 100644 --- a/fs/nfsd/nfs4idmap.c +++ b/fs/nfsd/nfs4idmap.c @@ -551,27 +551,46 @@ idmap_name_to_id(struct svc_rqst *rqstp, int type, const char *name, u32 namelen return 0; } -static int -idmap_id_to_name(struct svc_rqst *rqstp, int type, u32 id, char *name) +static __be32 encode_ascii_id(u32 id, __be32 **p, int *buflen) +{ + char buf[11]; + int len; + int bytes; + + len = sprintf(buf, "%u", id); + bytes = 4 + (XDR_QUADLEN(len) << 2); + if (bytes > *buflen) + return nfserr_resource; + *p = xdr_encode_opaque(*p, buf, len); + *buflen -= bytes; + return 0; +} + +static __be32 idmap_id_to_name(struct svc_rqst *rqstp, int type, u32 id, __be32 **p, int *buflen) { struct ent *item, key = { .id = id, .type = type, }; int ret; + int bytes; struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); strlcpy(key.authname, rqst_authname(rqstp), sizeof(key.authname)); ret = idmap_lookup(rqstp, idtoname_lookup, &key, nn->idtoname_cache, &item); if (ret == -ENOENT) - return sprintf(name, "%u", id); + return encode_ascii_id(id, p, buflen); if (ret) - return ret; + return nfserrno(ret); ret = strlen(item->name); - BUG_ON(ret > IDMAP_NAMESZ); - memcpy(name, item->name, ret); + WARN_ON_ONCE(ret > IDMAP_NAMESZ); + bytes = 4 + (XDR_QUADLEN(ret) << 2); + if (bytes > *buflen) + return nfserr_resource; + *p = xdr_encode_opaque(*p, item->name, ret); + *buflen -= bytes; cache_put(&item->h, nn->idtoname_cache); - return ret; + return 0; } static bool @@ -603,12 +622,11 @@ do_name_to_id(struct svc_rqst *rqstp, int type, const char *name, u32 namelen, u return idmap_name_to_id(rqstp, type, name, namelen, id); } -static int -do_id_to_name(struct svc_rqst *rqstp, int type, u32 id, char *name) +static __be32 encode_name_from_id(struct svc_rqst *rqstp, int type, u32 id, __be32 **p, int *buflen) { if (nfs4_disable_idmapping && rqstp->rq_cred.cr_flavor < RPC_AUTH_GSS) - return sprintf(name, "%u", id); - return idmap_id_to_name(rqstp, type, id, name); + return encode_ascii_id(id, p, buflen); + return idmap_id_to_name(rqstp, type, id, p, buflen); } __be32 @@ -637,16 +655,14 @@ nfsd_map_name_to_gid(struct svc_rqst *rqstp, const char *name, size_t namelen, return status; } -int -nfsd_map_uid_to_name(struct svc_rqst *rqstp, kuid_t uid, char *name) +__be32 nfsd4_encode_user(struct svc_rqst *rqstp, kuid_t uid, __be32 **p, int *buflen) { u32 id = from_kuid(&init_user_ns, uid); - return do_id_to_name(rqstp, IDMAP_TYPE_USER, id, name); + return encode_name_from_id(rqstp, IDMAP_TYPE_USER, id, p, buflen); } -int -nfsd_map_gid_to_name(struct svc_rqst *rqstp, kgid_t gid, char *name) +__be32 nfsd4_encode_group(struct svc_rqst *rqstp, kgid_t gid, __be32 **p, int *buflen) { u32 id = from_kgid(&init_user_ns, gid); - return do_id_to_name(rqstp, IDMAP_TYPE_GROUP, id, name); + return encode_name_from_id(rqstp, IDMAP_TYPE_GROUP, id, p, buflen); } diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index 419572f33b72..d543222babf3 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -41,6 +41,7 @@ #include "vfs.h" #include "current_stateid.h" #include "netns.h" +#include "acl.h" #ifdef CONFIG_NFSD_V4_SECURITY_LABEL #include <linux/security.h> @@ -230,17 +231,16 @@ static void nfsd4_set_open_owner_reply_cache(struct nfsd4_compound_state *cstate } static __be32 -do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open) +do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh **resfh) { struct svc_fh *current_fh = &cstate->current_fh; - struct svc_fh *resfh; int accmode; __be32 status; - resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); - if (!resfh) + *resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); + if (!*resfh) return nfserr_jukebox; - fh_init(resfh, NFS4_FHSIZE); + fh_init(*resfh, NFS4_FHSIZE); open->op_truncate = 0; if (open->op_create) { @@ -265,12 +265,12 @@ do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, stru */ status = do_nfsd_create(rqstp, current_fh, open->op_fname.data, open->op_fname.len, &open->op_iattr, - resfh, open->op_createmode, + *resfh, open->op_createmode, (u32 *)open->op_verf.data, &open->op_truncate, &open->op_created); if (!status && open->op_label.len) - nfsd4_security_inode_setsecctx(resfh, &open->op_label, open->op_bmval); + nfsd4_security_inode_setsecctx(*resfh, &open->op_label, open->op_bmval); /* * Following rfc 3530 14.2.16, use the returned bitmask @@ -280,31 +280,32 @@ do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, stru if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0) open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS | FATTR4_WORD1_TIME_MODIFY); - } else { + } else + /* + * Note this may exit with the parent still locked. + * We will hold the lock until nfsd4_open's final + * lookup, to prevent renames or unlinks until we've had + * a chance to an acquire a delegation if appropriate. + */ status = nfsd_lookup(rqstp, current_fh, - open->op_fname.data, open->op_fname.len, resfh); - fh_unlock(current_fh); - } + open->op_fname.data, open->op_fname.len, *resfh); if (status) goto out; - status = nfsd_check_obj_isreg(resfh); + status = nfsd_check_obj_isreg(*resfh); if (status) goto out; if (is_create_with_attrs(open) && open->op_acl != NULL) - do_set_nfs4_acl(rqstp, resfh, open->op_acl, open->op_bmval); + do_set_nfs4_acl(rqstp, *resfh, open->op_acl, open->op_bmval); - nfsd4_set_open_owner_reply_cache(cstate, open, resfh); + nfsd4_set_open_owner_reply_cache(cstate, open, *resfh); accmode = NFSD_MAY_NOP; if (open->op_created || open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR) accmode |= NFSD_MAY_OWNER_OVERRIDE; - status = do_open_permission(rqstp, resfh, open, accmode); + status = do_open_permission(rqstp, *resfh, open, accmode); set_change_info(&open->op_cinfo, current_fh); - fh_dup2(current_fh, resfh); out: - fh_put(resfh); - kfree(resfh); return status; } @@ -357,6 +358,7 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open) { __be32 status; + struct svc_fh *resfh = NULL; struct nfsd4_compoundres *resp; struct net *net = SVC_NET(rqstp); struct nfsd_net *nn = net_generic(net, nfsd_net_id); @@ -423,7 +425,7 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, switch (open->op_claim_type) { case NFS4_OPEN_CLAIM_DELEGATE_CUR: case NFS4_OPEN_CLAIM_NULL: - status = do_open_lookup(rqstp, cstate, open); + status = do_open_lookup(rqstp, cstate, open, &resfh); if (status) goto out; break; @@ -439,6 +441,7 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, status = do_open_fhandle(rqstp, cstate, open); if (status) goto out; + resfh = &cstate->current_fh; break; case NFS4_OPEN_CLAIM_DELEG_PREV_FH: case NFS4_OPEN_CLAIM_DELEGATE_PREV: @@ -458,9 +461,14 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, * successful, it (1) truncates the file if open->op_truncate was * set, (2) sets open->op_stateid, (3) sets open->op_delegation. */ - status = nfsd4_process_open2(rqstp, &cstate->current_fh, open); + status = nfsd4_process_open2(rqstp, resfh, open); WARN_ON(status && open->op_created); out: + if (resfh && resfh != &cstate->current_fh) { + fh_dup2(&cstate->current_fh, resfh); + fh_put(resfh); + kfree(resfh); + } nfsd4_cleanup_open_state(open, status); if (open->op_openowner && !nfsd4_has_session(cstate)) cstate->replay_owner = &open->op_openowner->oo_owner; @@ -1069,8 +1077,10 @@ _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, cstate->current_fh.fh_dentry, &p, count, verify->ve_bmval, rqstp, 0); - - /* this means that nfsd4_encode_fattr() ran out of space */ + /* + * If nfsd4_encode_fattr() ran out of space, assume that's because + * the attributes are longer (hence different) than those given: + */ if (status == nfserr_resource) status = nfserr_not_same; if (status) @@ -1263,6 +1273,8 @@ nfsd4_proc_compound(struct svc_rqst *rqstp, struct nfsd4_op *op; struct nfsd4_operation *opdesc; struct nfsd4_compound_state *cstate = &resp->cstate; + struct svc_fh *current_fh = &cstate->current_fh; + struct svc_fh *save_fh = &cstate->save_fh; int slack_bytes; u32 plen = 0; __be32 status; @@ -1278,11 +1290,11 @@ nfsd4_proc_compound(struct svc_rqst *rqstp, resp->tag = args->tag; resp->opcnt = 0; resp->rqstp = rqstp; - resp->cstate.minorversion = args->minorversion; - resp->cstate.replay_owner = NULL; - resp->cstate.session = NULL; - fh_init(&resp->cstate.current_fh, NFS4_FHSIZE); - fh_init(&resp->cstate.save_fh, NFS4_FHSIZE); + cstate->minorversion = args->minorversion; + cstate->replay_owner = NULL; + cstate->session = NULL; + fh_init(current_fh, NFS4_FHSIZE); + fh_init(save_fh, NFS4_FHSIZE); /* * Don't use the deferral mechanism for NFSv4; compounds make it * too hard to avoid non-idempotency problems. @@ -1335,20 +1347,28 @@ nfsd4_proc_compound(struct svc_rqst *rqstp, opdesc = OPDESC(op); - if (!cstate->current_fh.fh_dentry) { + if (!current_fh->fh_dentry) { if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) { op->status = nfserr_nofilehandle; goto encode_op; } - } else if (cstate->current_fh.fh_export->ex_fslocs.migrated && + } else if (current_fh->fh_export->ex_fslocs.migrated && !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { op->status = nfserr_moved; goto encode_op; } + fh_clear_wcc(current_fh); + /* If op is non-idempotent */ if (opdesc->op_flags & OP_MODIFIES_SOMETHING) { plen = opdesc->op_rsize_bop(rqstp, op); + /* + * If there's still another operation, make sure + * we'll have space to at least encode an error: + */ + if (resp->opcnt < args->opcnt) + plen += COMPOUND_ERR_SLACK_SPACE; op->status = nfsd4_check_resp_size(resp, plen); } @@ -1367,12 +1387,12 @@ nfsd4_proc_compound(struct svc_rqst *rqstp, clear_current_stateid(cstate); if (need_wrongsec_check(rqstp)) - op->status = check_nfsd_access(cstate->current_fh.fh_export, rqstp); + op->status = check_nfsd_access(current_fh->fh_export, rqstp); } encode_op: /* Only from SEQUENCE */ - if (resp->cstate.status == nfserr_replay_cache) { + if (cstate->status == nfserr_replay_cache) { dprintk("%s NFS4.1 replay from cache\n", __func__); status = op->status; goto out; @@ -1401,10 +1421,10 @@ encode_op: nfsd4_increment_op_stats(op->opnum); } - resp->cstate.status = status; - fh_put(&resp->cstate.current_fh); - fh_put(&resp->cstate.save_fh); - BUG_ON(resp->cstate.replay_owner); + cstate->status = status; + fh_put(current_fh); + fh_put(save_fh); + BUG_ON(cstate->replay_owner); out: /* Reset deferral mechanism for RPC deferrals */ rqstp->rq_usedeferral = 1; @@ -1513,7 +1533,8 @@ static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *o static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) { - return (op_encode_hdr_size + 2 + 1024) * sizeof(__be32); + return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) * + sizeof(__be32); } static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) @@ -1524,7 +1545,8 @@ static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) { return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\ - 1 + 1 + 2 + /* eir_flags, spr_how, spo_must_enforce & _allow */\ + 1 + 1 + /* eir_flags, spr_how */\ + 4 + /* spo_must_enforce & _allow with bitmap */\ 2 + /*eir_server_owner.so_minor_id */\ /* eir_server_owner.so_major_id<> */\ XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\ @@ -1881,6 +1903,7 @@ struct svc_version nfsd_version4 = { .vs_proc = nfsd_procedures4, .vs_dispatch = nfsd_dispatch, .vs_xdrsize = NFS4_SVC_XDRSIZE, + .vs_rpcb_optnl = 1, }; /* diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 105d6fa7c514..3ba65979a3cd 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -832,10 +832,11 @@ static void nfsd4_put_drc_mem(struct nfsd4_channel_attrs *ca) spin_unlock(&nfsd_drc_lock); } -static struct nfsd4_session *alloc_session(struct nfsd4_channel_attrs *attrs) +static struct nfsd4_session *alloc_session(struct nfsd4_channel_attrs *fattrs, + struct nfsd4_channel_attrs *battrs) { - int numslots = attrs->maxreqs; - int slotsize = slot_bytes(attrs); + int numslots = fattrs->maxreqs; + int slotsize = slot_bytes(fattrs); struct nfsd4_session *new; int mem, i; @@ -852,6 +853,10 @@ static struct nfsd4_session *alloc_session(struct nfsd4_channel_attrs *attrs) if (!new->se_slots[i]) goto out_free; } + + memcpy(&new->se_fchannel, fattrs, sizeof(struct nfsd4_channel_attrs)); + memcpy(&new->se_bchannel, battrs, sizeof(struct nfsd4_channel_attrs)); + return new; out_free: while (i--) @@ -997,8 +1002,7 @@ static void init_session(struct svc_rqst *rqstp, struct nfsd4_session *new, stru list_add(&new->se_perclnt, &clp->cl_sessions); spin_unlock(&clp->cl_lock); spin_unlock(&nn->client_lock); - memcpy(&new->se_fchannel, &cses->fore_channel, - sizeof(struct nfsd4_channel_attrs)); + if (cses->flags & SESSION4_BACK_CHAN) { struct sockaddr *sa = svc_addr(rqstp); /* @@ -1534,7 +1538,7 @@ out_err: } /* - * Cache a reply. nfsd4_check_drc_limit() has bounded the cache size. + * Cache a reply. nfsd4_check_resp_size() has bounded the cache size. */ void nfsd4_store_cache_entry(struct nfsd4_compoundres *resp) @@ -1592,7 +1596,7 @@ nfsd4_enc_sequence_replay(struct nfsd4_compoundargs *args, * The sequence operation is not cached because we can use the slot and * session values. */ -__be32 +static __be32 nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp, struct nfsd4_sequence *seq) { @@ -1601,9 +1605,8 @@ nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp, dprintk("--> %s slot %p\n", __func__, slot); - /* Either returns 0 or nfserr_retry_uncached */ status = nfsd4_enc_sequence_replay(resp->rqstp->rq_argp, resp); - if (status == nfserr_retry_uncached_rep) + if (status) return status; /* The sequence operation has been encoded, cstate->datap set. */ @@ -1851,6 +1854,11 @@ static __be32 check_forechannel_attrs(struct nfsd4_channel_attrs *ca, struct nfs return nfs_ok; } +#define NFSD_CB_MAX_REQ_SZ ((NFS4_enc_cb_recall_sz + \ + RPC_MAX_HEADER_WITH_AUTH) * sizeof(__be32)) +#define NFSD_CB_MAX_RESP_SZ ((NFS4_dec_cb_recall_sz + \ + RPC_MAX_REPHEADER_WITH_AUTH) * sizeof(__be32)) + static __be32 check_backchannel_attrs(struct nfsd4_channel_attrs *ca) { ca->headerpadsz = 0; @@ -1861,9 +1869,9 @@ static __be32 check_backchannel_attrs(struct nfsd4_channel_attrs *ca) * less than 1k. Tighten up this estimate in the unlikely event * it turns out to be a problem for some client: */ - if (ca->maxreq_sz < NFS4_enc_cb_recall_sz + RPC_MAX_HEADER_WITH_AUTH) + if (ca->maxreq_sz < NFSD_CB_MAX_REQ_SZ) return nfserr_toosmall; - if (ca->maxresp_sz < NFS4_dec_cb_recall_sz + RPC_MAX_REPHEADER_WITH_AUTH) + if (ca->maxresp_sz < NFSD_CB_MAX_RESP_SZ) return nfserr_toosmall; ca->maxresp_cached = 0; if (ca->maxops < 2) @@ -1913,9 +1921,9 @@ nfsd4_create_session(struct svc_rqst *rqstp, return status; status = check_backchannel_attrs(&cr_ses->back_channel); if (status) - return status; + goto out_release_drc_mem; status = nfserr_jukebox; - new = alloc_session(&cr_ses->fore_channel); + new = alloc_session(&cr_ses->fore_channel, &cr_ses->back_channel); if (!new) goto out_release_drc_mem; conn = alloc_conn_from_crses(rqstp, cr_ses); @@ -2278,7 +2286,8 @@ out: if (!list_empty(&clp->cl_revoked)) seq->status_flags |= SEQ4_STATUS_RECALLABLE_STATE_REVOKED; out_no_session: - kfree(conn); + if (conn) + free_conn(conn); spin_unlock(&nn->client_lock); return status; out_put_session: @@ -3034,18 +3043,18 @@ static int nfs4_setlease(struct nfs4_delegation *dp) if (!fl) return -ENOMEM; fl->fl_file = find_readable_file(fp); - list_add(&dp->dl_perclnt, &dp->dl_stid.sc_client->cl_delegations); status = vfs_setlease(fl->fl_file, fl->fl_type, &fl); - if (status) { - list_del_init(&dp->dl_perclnt); - locks_free_lock(fl); - return status; - } + if (status) + goto out_free; + list_add(&dp->dl_perclnt, &dp->dl_stid.sc_client->cl_delegations); fp->fi_lease = fl; fp->fi_deleg_file = get_file(fl->fl_file); atomic_set(&fp->fi_delegees, 1); list_add(&dp->dl_perfile, &fp->fi_delegations); return 0; +out_free: + locks_free_lock(fl); + return status; } static int nfs4_set_delegation(struct nfs4_delegation *dp, struct nfs4_file *fp) @@ -3125,6 +3134,7 @@ nfs4_open_delegation(struct net *net, struct svc_fh *fh, goto out_no_deleg; break; case NFS4_OPEN_CLAIM_NULL: + case NFS4_OPEN_CLAIM_FH: /* * Let's not give out any delegations till everyone's * had the chance to reclaim theirs.... @@ -3617,8 +3627,11 @@ static __be32 nfsd4_lookup_stateid(stateid_t *stateid, unsigned char typemask, return nfserr_bad_stateid; status = lookup_clientid(&stateid->si_opaque.so_clid, sessions, nn, &cl); - if (status == nfserr_stale_clientid) + if (status == nfserr_stale_clientid) { + if (sessions) + return nfserr_bad_stateid; return nfserr_stale_stateid; + } if (status) return status; *s = find_stateid_by_type(cl, stateid, typemask); @@ -5052,7 +5065,6 @@ nfs4_state_destroy_net(struct net *net) int i; struct nfs4_client *clp = NULL; struct nfsd_net *nn = net_generic(net, nfsd_net_id); - struct rb_node *node, *tmp; for (i = 0; i < CLIENT_HASH_SIZE; i++) { while (!list_empty(&nn->conf_id_hashtbl[i])) { @@ -5061,13 +5073,11 @@ nfs4_state_destroy_net(struct net *net) } } - node = rb_first(&nn->unconf_name_tree); - while (node != NULL) { - tmp = node; - node = rb_next(tmp); - clp = rb_entry(tmp, struct nfs4_client, cl_namenode); - rb_erase(tmp, &nn->unconf_name_tree); - destroy_client(clp); + for (i = 0; i < CLIENT_HASH_SIZE; i++) { + while (!list_empty(&nn->unconf_id_hashtbl[i])) { + clp = list_entry(nn->unconf_id_hashtbl[i].next, struct nfs4_client, cl_idhash); + destroy_client(clp); + } } kfree(nn->sessionid_hashtbl); diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index ee7237f99f54..2723c1badd01 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -103,11 +103,6 @@ xdr_error: \ (x) = (u64)ntohl(*p++) << 32; \ (x) |= ntohl(*p++); \ } while (0) -#define READTIME(x) do { \ - p++; \ - (x) = ntohl(*p++); \ - p++; \ -} while (0) #define READMEM(x,nbytes) do { \ x = (char *)p; \ p += XDR_QUADLEN(nbytes); \ @@ -190,6 +185,15 @@ static int zero_clientid(clientid_t *clid) return (clid->cl_boot == 0) && (clid->cl_id == 0); } +/** + * defer_free - mark an allocation as deferred freed + * @argp: NFSv4 compound argument structure to be freed with + * @release: release callback to free @p, typically kfree() + * @p: pointer to be freed + * + * Marks @p to be freed when processing the compound operation + * described in @argp finishes. + */ static int defer_free(struct nfsd4_compoundargs *argp, void (*release)(const void *), void *p) @@ -206,6 +210,16 @@ defer_free(struct nfsd4_compoundargs *argp, return 0; } +/** + * savemem - duplicate a chunk of memory for later processing + * @argp: NFSv4 compound argument structure to be freed with + * @p: pointer to be duplicated + * @nbytes: length to be duplicated + * + * Returns a pointer to a copy of @nbytes bytes of memory at @p + * that are preserved until processing of the NFSv4 compound + * operation described by @argp finishes. + */ static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) { if (p == argp->tmp) { @@ -257,7 +271,6 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, int expected_len, len = 0; u32 dummy32; char *buf; - int host_err; DECODE_HEAD; iattr->ia_valid = 0; @@ -281,13 +294,12 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, READ32(nace); if (nace > NFS4_ACL_MAX) - return nfserr_resource; + return nfserr_fbig; *acl = nfs4_acl_new(nace); - if (*acl == NULL) { - host_err = -ENOMEM; - goto out_nfserr; - } + if (*acl == NULL) + return nfserr_jukebox; + defer_free(argp, kfree, *acl); (*acl)->naces = nace; @@ -425,10 +437,6 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, goto xdr_error; DECODE_TAIL; - -out_nfserr: - status = nfserrno(host_err); - goto out; } static __be32 @@ -1214,7 +1222,6 @@ nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) } write->wr_head.iov_base = p; write->wr_head.iov_len = avail; - WARN_ON(avail != (XDR_QUADLEN(avail) << 2)); write->wr_pagelist = argp->pagelist; len = XDR_QUADLEN(write->wr_buflen) << 2; @@ -1957,56 +1964,16 @@ static u32 nfs4_file_type(umode_t mode) }; } -static __be32 -nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, kuid_t uid, kgid_t gid, - __be32 **p, int *buflen) -{ - int status; - - if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) - return nfserr_resource; - if (whotype != NFS4_ACL_WHO_NAMED) - status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); - else if (gid_valid(gid)) - status = nfsd_map_gid_to_name(rqstp, gid, (u8 *)(*p + 1)); - else - status = nfsd_map_uid_to_name(rqstp, uid, (u8 *)(*p + 1)); - if (status < 0) - return nfserrno(status); - *p = xdr_encode_opaque(*p, NULL, status); - *buflen -= (XDR_QUADLEN(status) << 2) + 4; - BUG_ON(*buflen < 0); - return 0; -} - -static inline __be32 -nfsd4_encode_user(struct svc_rqst *rqstp, kuid_t user, __be32 **p, int *buflen) -{ - return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, user, INVALID_GID, - p, buflen); -} - -static inline __be32 -nfsd4_encode_group(struct svc_rqst *rqstp, kgid_t group, __be32 **p, int *buflen) -{ - return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, INVALID_UID, group, - p, buflen); -} - static inline __be32 nfsd4_encode_aclname(struct svc_rqst *rqstp, struct nfs4_ace *ace, __be32 **p, int *buflen) { - kuid_t uid = INVALID_UID; - kgid_t gid = INVALID_GID; - - if (ace->whotype == NFS4_ACL_WHO_NAMED) { - if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) - gid = ace->who_gid; - else - uid = ace->who_uid; - } - return nfsd4_encode_name(rqstp, ace->whotype, uid, gid, p, buflen); + if (ace->whotype != NFS4_ACL_WHO_NAMED) + return nfs4_acl_write_who(ace->whotype, p, buflen); + else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) + return nfsd4_encode_group(rqstp, ace->who_gid, p, buflen); + else + return nfsd4_encode_user(rqstp, ace->who_uid, p, buflen); } #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ @@ -2090,7 +2057,7 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, u32 bmval1 = bmval[1]; u32 bmval2 = bmval[2]; struct kstat stat; - struct svc_fh tempfh; + struct svc_fh *tempfh = NULL; struct kstatfs statfs; int buflen = count << 2; __be32 *attrlenp; @@ -2137,11 +2104,15 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, goto out_nfserr; } if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { - fh_init(&tempfh, NFS4_FHSIZE); - status = fh_compose(&tempfh, exp, dentry, NULL); + tempfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); + status = nfserr_jukebox; + if (!tempfh) + goto out; + fh_init(tempfh, NFS4_FHSIZE); + status = fh_compose(tempfh, exp, dentry, NULL); if (status) goto out; - fhp = &tempfh; + fhp = tempfh; } if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | FATTR4_WORD0_SUPPORTED_ATTRS)) { @@ -2222,8 +2193,10 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, if ((buflen -= 4) < 0) goto out_resource; dummy = nfs4_file_type(stat.mode); - if (dummy == NF4BAD) - goto out_serverfault; + if (dummy == NF4BAD) { + status = nfserr_serverfault; + goto out; + } WRITE32(dummy); } if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { @@ -2317,8 +2290,6 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, WRITE32(ace->flag); WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); status = nfsd4_encode_aclname(rqstp, ace, &p, &buflen); - if (status == nfserr_resource) - goto out_resource; if (status) goto out; } @@ -2379,8 +2350,6 @@ out_acl: } if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); - if (status == nfserr_resource) - goto out_resource; if (status) goto out; } @@ -2431,15 +2400,11 @@ out_acl: } if (bmval1 & FATTR4_WORD1_OWNER) { status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); - if (status == nfserr_resource) - goto out_resource; if (status) goto out; } if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); - if (status == nfserr_resource) - goto out_resource; if (status) goto out; } @@ -2517,6 +2482,8 @@ out_acl: goto out; } if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { + if ((buflen -= 16) < 0) + goto out_resource; WRITE32(3); WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0); WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1); @@ -2533,8 +2500,10 @@ out: security_release_secctx(context, contextlen); #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ kfree(acl); - if (fhp == &tempfh) - fh_put(&tempfh); + if (tempfh) { + fh_put(tempfh); + kfree(tempfh); + } return status; out_nfserr: status = nfserrno(err); @@ -2542,9 +2511,6 @@ out_nfserr: out_resource: status = nfserr_resource; goto out; -out_serverfault: - status = nfserr_serverfault; - goto out; } static inline int attributes_need_mount(u32 *bmval) @@ -2621,17 +2587,14 @@ out_put: static __be32 * nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) { - __be32 *attrlenp; - if (buflen < 6) return NULL; *p++ = htonl(2); *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ *p++ = htonl(0); /* bmval1 */ - attrlenp = p++; + *p++ = htonl(4); /* attribute length */ *p++ = nfserr; /* no htonl */ - *attrlenp = htonl((char *)p - (char *)attrlenp - 4); return p; } @@ -3244,7 +3207,7 @@ nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp, if (rpcauth_get_gssinfo(pf, &info) == 0) { supported++; - RESERVE_SPACE(4 + 4 + info.oid.len + 4 + 4); + RESERVE_SPACE(4 + 4 + XDR_LEN(info.oid.len) + 4 + 4); WRITE32(RPC_AUTH_GSS); WRITE32(info.oid.len); WRITEMEM(info.oid.data, info.oid.len); @@ -3379,35 +3342,43 @@ nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, 8 /* eir_clientid */ + 4 /* eir_sequenceid */ + 4 /* eir_flags */ + - 4 /* spr_how */ + - 8 /* spo_must_enforce, spo_must_allow */ + - 8 /* so_minor_id */ + - 4 /* so_major_id.len */ + - (XDR_QUADLEN(major_id_sz) * 4) + - 4 /* eir_server_scope.len */ + - (XDR_QUADLEN(server_scope_sz) * 4) + - 4 /* eir_server_impl_id.count (0) */); + 4 /* spr_how */); WRITEMEM(&exid->clientid, 8); WRITE32(exid->seqid); WRITE32(exid->flags); WRITE32(exid->spa_how); + ADJUST_ARGS(); + switch (exid->spa_how) { case SP4_NONE: break; case SP4_MACH_CRED: + /* spo_must_enforce, spo_must_allow */ + RESERVE_SPACE(16); + /* spo_must_enforce bitmap: */ WRITE32(2); WRITE32(nfs4_minimal_spo_must_enforce[0]); WRITE32(nfs4_minimal_spo_must_enforce[1]); /* empty spo_must_allow bitmap: */ WRITE32(0); + + ADJUST_ARGS(); break; default: WARN_ON_ONCE(1); } + RESERVE_SPACE( + 8 /* so_minor_id */ + + 4 /* so_major_id.len */ + + (XDR_QUADLEN(major_id_sz) * 4) + + 4 /* eir_server_scope.len */ + + (XDR_QUADLEN(server_scope_sz) * 4) + + 4 /* eir_server_impl_id.count (0) */); + /* The server_owner struct */ WRITE64(minor_id); /* Minor id */ /* major id */ @@ -3474,28 +3445,6 @@ nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, } static __be32 -nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, __be32 nfserr, - struct nfsd4_destroy_session *destroy_session) -{ - return nfserr; -} - -static __be32 -nfsd4_encode_free_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, - struct nfsd4_free_stateid *free_stateid) -{ - __be32 *p; - - if (nfserr) - return nfserr; - - RESERVE_SPACE(4); - *p++ = nfserr; - ADJUST_ARGS(); - return nfserr; -} - -static __be32 nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_sequence *seq) { @@ -3525,6 +3474,9 @@ nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_test_stateid_id *stateid, *next; __be32 *p; + if (nfserr) + return nfserr; + RESERVE_SPACE(4 + (4 * test_stateid->ts_num_ids)); *p++ = htonl(test_stateid->ts_num_ids); @@ -3593,8 +3545,8 @@ static nfsd4_enc nfsd4_enc_ops[] = { [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, - [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session, - [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_free_stateid, + [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_noop, + [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, @@ -3633,8 +3585,6 @@ __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad) return 0; session = resp->cstate.session; - if (session == NULL) - return 0; if (xb->page_len == 0) { length = (char *)resp->p - (char *)xb->head[0].iov_base + pad; @@ -3674,9 +3624,17 @@ nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || !nfsd4_enc_ops[op->opnum]); op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u); - /* nfsd4_check_drc_limit guarantees enough room for error status */ + /* nfsd4_check_resp_size guarantees enough room for error status */ if (!op->status) op->status = nfsd4_check_resp_size(resp, 0); + if (op->status == nfserr_resource && nfsd4_has_session(&resp->cstate)) { + struct nfsd4_slot *slot = resp->cstate.slot; + + if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) + op->status = nfserr_rep_too_big_to_cache; + else + op->status = nfserr_rep_too_big; + } if (so) { so->so_replay.rp_status = op->status; so->so_replay.rp_buflen = (char *)resp->p - (char *)(statp+1); @@ -3745,6 +3703,12 @@ int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp) int nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) { + if (rqstp->rq_arg.head[0].iov_len % 4) { + /* client is nuts */ + dprintk("%s: compound not properly padded! (peeraddr=%pISc xid=0x%x)", + __func__, svc_addr(rqstp), be32_to_cpu(rqstp->rq_xid)); + return 0; + } args->p = p; args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; args->pagelist = rqstp->rq_arg.pages; diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c index b6af150c96b8..f8f060ffbf4f 100644 --- a/fs/nfsd/nfscache.c +++ b/fs/nfsd/nfscache.c @@ -132,13 +132,6 @@ nfsd_reply_cache_alloc(void) } static void -nfsd_reply_cache_unhash(struct svc_cacherep *rp) -{ - hlist_del_init(&rp->c_hash); - list_del_init(&rp->c_lru); -} - -static void nfsd_reply_cache_free_locked(struct svc_cacherep *rp) { if (rp->c_type == RC_REPLBUFF && rp->c_replvec.iov_base) { @@ -416,22 +409,8 @@ nfsd_cache_lookup(struct svc_rqst *rqstp) /* * Since the common case is a cache miss followed by an insert, - * preallocate an entry. First, try to reuse the first entry on the LRU - * if it works, then go ahead and prune the LRU list. + * preallocate an entry. */ - spin_lock(&cache_lock); - if (!list_empty(&lru_head)) { - rp = list_first_entry(&lru_head, struct svc_cacherep, c_lru); - if (nfsd_cache_entry_expired(rp) || - num_drc_entries >= max_drc_entries) { - nfsd_reply_cache_unhash(rp); - prune_cache_entries(); - goto search_cache; - } - } - - /* No expired ones available, allocate a new one. */ - spin_unlock(&cache_lock); rp = nfsd_reply_cache_alloc(); spin_lock(&cache_lock); if (likely(rp)) { @@ -439,7 +418,9 @@ nfsd_cache_lookup(struct svc_rqst *rqstp) drc_mem_usage += sizeof(*rp); } -search_cache: + /* go ahead and prune the cache */ + prune_cache_entries(); + found = nfsd_cache_search(rqstp, csum); if (found) { if (likely(rp)) @@ -453,15 +434,6 @@ search_cache: goto out; } - /* - * We're keeping the one we just allocated. Are we now over the - * limit? Prune one off the tip of the LRU in trade for the one we - * just allocated if so. - */ - if (num_drc_entries >= max_drc_entries) - nfsd_reply_cache_free_locked(list_first_entry(&lru_head, - struct svc_cacherep, c_lru)); - nfsdstats.rcmisses++; rqstp->rq_cacherep = rp; rp->c_state = RC_INPROG; diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 7f555179bf81..f34d9de802ab 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -699,6 +699,11 @@ static ssize_t __write_ports_addfd(char *buf, struct net *net) if (err != 0 || fd < 0) return -EINVAL; + if (svc_alien_sock(net, fd)) { + printk(KERN_ERR "%s: socket net is different to NFSd's one\n", __func__); + return -EINVAL; + } + err = nfsd_create_serv(net); if (err != 0) return err; diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h index 30f34ab02137..479eb681c27c 100644 --- a/fs/nfsd/nfsd.h +++ b/fs/nfsd/nfsd.h @@ -282,7 +282,7 @@ void nfsd_lockd_shutdown(void); * reason. */ #define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */ -#define COMPOUND_ERR_SLACK_SPACE 12 /* OP_SETATTR */ +#define COMPOUND_ERR_SLACK_SPACE 16 /* OP_SETATTR */ #define NFSD_LAUNDROMAT_MINTIMEOUT 1 /* seconds */ diff --git a/fs/nfsd/nfsfh.h b/fs/nfsd/nfsfh.h index 4775bc4896c8..ad67964d0bb1 100644 --- a/fs/nfsd/nfsfh.h +++ b/fs/nfsd/nfsfh.h @@ -133,6 +133,17 @@ fh_init(struct svc_fh *fhp, int maxsize) #ifdef CONFIG_NFSD_V3 /* + * The wcc data stored in current_fh should be cleared + * between compound ops. + */ +static inline void +fh_clear_wcc(struct svc_fh *fhp) +{ + fhp->fh_post_saved = 0; + fhp->fh_pre_saved = 0; +} + +/* * Fill in the pre_op attr for the wcc data */ static inline void @@ -152,7 +163,8 @@ fill_pre_wcc(struct svc_fh *fhp) extern void fill_post_wcc(struct svc_fh *); #else -#define fill_pre_wcc(ignored) +#define fh_clear_wcc(ignored) +#define fill_pre_wcc(ignored) #define fill_post_wcc(notused) #endif /* CONFIG_NFSD_V3 */ diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c index 760c85a6f534..9a4a5f9e7468 100644 --- a/fs/nfsd/nfssvc.c +++ b/fs/nfsd/nfssvc.c @@ -241,6 +241,15 @@ static void nfsd_shutdown_generic(void) nfsd_racache_shutdown(); } +static bool nfsd_needs_lockd(void) +{ +#if defined(CONFIG_NFSD_V3) + return (nfsd_versions[2] != NULL) || (nfsd_versions[3] != NULL); +#else + return (nfsd_versions[2] != NULL); +#endif +} + static int nfsd_startup_net(int nrservs, struct net *net) { struct nfsd_net *nn = net_generic(net, nfsd_net_id); @@ -255,9 +264,14 @@ static int nfsd_startup_net(int nrservs, struct net *net) ret = nfsd_init_socks(net); if (ret) goto out_socks; - ret = lockd_up(net); - if (ret) - goto out_socks; + + if (nfsd_needs_lockd() && !nn->lockd_up) { + ret = lockd_up(net); + if (ret) + goto out_socks; + nn->lockd_up = 1; + } + ret = nfs4_state_start_net(net); if (ret) goto out_lockd; @@ -266,7 +280,10 @@ static int nfsd_startup_net(int nrservs, struct net *net) return 0; out_lockd: - lockd_down(net); + if (nn->lockd_up) { + lockd_down(net); + nn->lockd_up = 0; + } out_socks: nfsd_shutdown_generic(); return ret; @@ -277,7 +294,10 @@ static void nfsd_shutdown_net(struct net *net) struct nfsd_net *nn = net_generic(net, nfsd_net_id); nfs4_state_shutdown_net(net); - lockd_down(net); + if (nn->lockd_up) { + lockd_down(net); + nn->lockd_up = 0; + } nn->nfsd_net_up = false; nfsd_shutdown_generic(); } diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 7eea63cada1d..16f0673a423c 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -207,7 +207,12 @@ nfsd_lookup_dentry(struct svc_rqst *rqstp, struct svc_fh *fhp, goto out_nfserr; } } else { - fh_lock(fhp); + /* + * In the nfsd4_open() case, this may be held across + * subsequent open and delegation acquisition which may + * need to take the child's i_mutex: + */ + fh_lock_nested(fhp, I_MUTEX_PARENT); dentry = lookup_one_len(name, dparent, len); host_err = PTR_ERR(dentry); if (IS_ERR(dentry)) @@ -273,13 +278,6 @@ out: return err; } -static int nfsd_break_lease(struct inode *inode) -{ - if (!S_ISREG(inode->i_mode)) - return 0; - return break_lease(inode, O_WRONLY | O_NONBLOCK); -} - /* * Commit metadata changes to stable storage. */ @@ -348,8 +346,7 @@ nfsd_sanitize_attrs(struct inode *inode, struct iattr *iap) /* Revoke setuid/setgid on chown */ if (!S_ISDIR(inode->i_mode) && - (((iap->ia_valid & ATTR_UID) && !uid_eq(iap->ia_uid, inode->i_uid)) || - ((iap->ia_valid & ATTR_GID) && !gid_eq(iap->ia_gid, inode->i_gid)))) { + ((iap->ia_valid & ATTR_UID) || (iap->ia_valid & ATTR_GID))) { iap->ia_valid |= ATTR_KILL_PRIV; if (iap->ia_valid & ATTR_MODE) { /* we're setting mode too, just clear the s*id bits */ @@ -407,6 +404,7 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap, umode_t ftype = 0; __be32 err; int host_err; + bool get_write_count; int size_change = 0; if (iap->ia_valid & (ATTR_ATIME | ATTR_MTIME | ATTR_SIZE)) @@ -414,10 +412,18 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap, if (iap->ia_valid & ATTR_SIZE) ftype = S_IFREG; + /* Callers that do fh_verify should do the fh_want_write: */ + get_write_count = !fhp->fh_dentry; + /* Get inode */ err = fh_verify(rqstp, fhp, ftype, accmode); if (err) goto out; + if (get_write_count) { + host_err = fh_want_write(fhp); + if (host_err) + return nfserrno(host_err); + } dentry = fhp->fh_dentry; inode = dentry->d_inode; @@ -449,16 +455,11 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap, goto out_put_write_access; } - host_err = nfsd_break_lease(inode); - if (host_err) - goto out_put_write_access_nfserror; - fh_lock(fhp); host_err = notify_change(dentry, iap, NULL); fh_unlock(fhp); - -out_put_write_access_nfserror: err = nfserrno(host_err); + out_put_write_access: if (size_change) put_write_access(inode); @@ -468,158 +469,7 @@ out: return err; } -#if defined(CONFIG_NFSD_V2_ACL) || \ - defined(CONFIG_NFSD_V3_ACL) || \ - defined(CONFIG_NFSD_V4) -static ssize_t nfsd_getxattr(struct dentry *dentry, char *key, void **buf) -{ - ssize_t buflen; - ssize_t ret; - - buflen = vfs_getxattr(dentry, key, NULL, 0); - if (buflen <= 0) - return buflen; - - *buf = kmalloc(buflen, GFP_KERNEL); - if (!*buf) - return -ENOMEM; - - ret = vfs_getxattr(dentry, key, *buf, buflen); - if (ret < 0) - kfree(*buf); - return ret; -} -#endif - #if defined(CONFIG_NFSD_V4) -static int -set_nfsv4_acl_one(struct dentry *dentry, struct posix_acl *pacl, char *key) -{ - int len; - size_t buflen; - char *buf = NULL; - int error = 0; - - buflen = posix_acl_xattr_size(pacl->a_count); - buf = kmalloc(buflen, GFP_KERNEL); - error = -ENOMEM; - if (buf == NULL) - goto out; - - len = posix_acl_to_xattr(&init_user_ns, pacl, buf, buflen); - if (len < 0) { - error = len; - goto out; - } - - error = vfs_setxattr(dentry, key, buf, len, 0); -out: - kfree(buf); - return error; -} - -__be32 -nfsd4_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp, - struct nfs4_acl *acl) -{ - __be32 error; - int host_error; - struct dentry *dentry; - struct inode *inode; - struct posix_acl *pacl = NULL, *dpacl = NULL; - unsigned int flags = 0; - - /* Get inode */ - error = fh_verify(rqstp, fhp, 0, NFSD_MAY_SATTR); - if (error) - return error; - - dentry = fhp->fh_dentry; - inode = dentry->d_inode; - if (S_ISDIR(inode->i_mode)) - flags = NFS4_ACL_DIR; - - host_error = nfs4_acl_nfsv4_to_posix(acl, &pacl, &dpacl, flags); - if (host_error == -EINVAL) { - return nfserr_attrnotsupp; - } else if (host_error < 0) - goto out_nfserr; - - host_error = set_nfsv4_acl_one(dentry, pacl, POSIX_ACL_XATTR_ACCESS); - if (host_error < 0) - goto out_release; - - if (S_ISDIR(inode->i_mode)) - host_error = set_nfsv4_acl_one(dentry, dpacl, POSIX_ACL_XATTR_DEFAULT); - -out_release: - posix_acl_release(pacl); - posix_acl_release(dpacl); -out_nfserr: - if (host_error == -EOPNOTSUPP) - return nfserr_attrnotsupp; - else - return nfserrno(host_error); -} - -static struct posix_acl * -_get_posix_acl(struct dentry *dentry, char *key) -{ - void *buf = NULL; - struct posix_acl *pacl = NULL; - int buflen; - - buflen = nfsd_getxattr(dentry, key, &buf); - if (!buflen) - buflen = -ENODATA; - if (buflen <= 0) - return ERR_PTR(buflen); - - pacl = posix_acl_from_xattr(&init_user_ns, buf, buflen); - kfree(buf); - return pacl; -} - -int -nfsd4_get_nfs4_acl(struct svc_rqst *rqstp, struct dentry *dentry, struct nfs4_acl **acl) -{ - struct inode *inode = dentry->d_inode; - int error = 0; - struct posix_acl *pacl = NULL, *dpacl = NULL; - unsigned int flags = 0; - - pacl = _get_posix_acl(dentry, POSIX_ACL_XATTR_ACCESS); - if (IS_ERR(pacl) && PTR_ERR(pacl) == -ENODATA) - pacl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL); - if (IS_ERR(pacl)) { - error = PTR_ERR(pacl); - pacl = NULL; - goto out; - } - - if (S_ISDIR(inode->i_mode)) { - dpacl = _get_posix_acl(dentry, POSIX_ACL_XATTR_DEFAULT); - if (IS_ERR(dpacl) && PTR_ERR(dpacl) == -ENODATA) - dpacl = NULL; - else if (IS_ERR(dpacl)) { - error = PTR_ERR(dpacl); - dpacl = NULL; - goto out; - } - flags = NFS4_ACL_DIR; - } - - *acl = nfs4_acl_posix_to_nfsv4(pacl, dpacl, flags); - if (IS_ERR(*acl)) { - error = PTR_ERR(*acl); - *acl = NULL; - } - out: - posix_acl_release(pacl); - posix_acl_release(dpacl); - return error; -} - /* * NFS junction information is stored in an extended attribute. */ @@ -1760,11 +1610,6 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp, err = nfserr_noent; if (!dold->d_inode) goto out_dput; - host_err = nfsd_break_lease(dold->d_inode); - if (host_err) { - err = nfserrno(host_err); - goto out_dput; - } host_err = vfs_link(dold, dirp, dnew, NULL); if (!host_err) { err = nfserrno(commit_metadata(ffhp)); @@ -1858,15 +1703,7 @@ nfsd_rename(struct svc_rqst *rqstp, struct svc_fh *ffhp, char *fname, int flen, if (ffhp->fh_export->ex_path.dentry != tfhp->fh_export->ex_path.dentry) goto out_dput_new; - host_err = nfsd_break_lease(odentry->d_inode); - if (host_err) - goto out_dput_new; - if (ndentry->d_inode) { - host_err = nfsd_break_lease(ndentry->d_inode); - if (host_err) - goto out_dput_new; - } - host_err = vfs_rename(fdir, odentry, tdir, ndentry, NULL); + host_err = vfs_rename(fdir, odentry, tdir, ndentry, NULL, 0); if (!host_err) { host_err = commit_metadata(tfhp); if (!host_err) @@ -1878,10 +1715,10 @@ nfsd_rename(struct svc_rqst *rqstp, struct svc_fh *ffhp, char *fname, int flen, dput(odentry); out_nfserr: err = nfserrno(host_err); - - /* we cannot reply on fh_unlock on the two filehandles, + /* + * We cannot rely on fh_unlock on the two filehandles, * as that would do the wrong thing if the two directories - * were the same, so again we do it by hand + * were the same, so again we do it by hand. */ fill_post_wcc(ffhp); fill_post_wcc(tfhp); @@ -1935,16 +1772,12 @@ nfsd_unlink(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, if (!type) type = rdentry->d_inode->i_mode & S_IFMT; - host_err = nfsd_break_lease(rdentry->d_inode); - if (host_err) - goto out_put; if (type != S_IFDIR) host_err = vfs_unlink(dirp, rdentry, NULL); else host_err = vfs_rmdir(dirp, rdentry); if (!host_err) host_err = commit_metadata(fhp); -out_put: dput(rdentry); out_nfserr: @@ -2284,93 +2117,3 @@ out_nomem: nfsd_racache_shutdown(); return -ENOMEM; } - -#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) -struct posix_acl * -nfsd_get_posix_acl(struct svc_fh *fhp, int type) -{ - struct inode *inode = fhp->fh_dentry->d_inode; - char *name; - void *value = NULL; - ssize_t size; - struct posix_acl *acl; - - if (!IS_POSIXACL(inode)) - return ERR_PTR(-EOPNOTSUPP); - - switch (type) { - case ACL_TYPE_ACCESS: - name = POSIX_ACL_XATTR_ACCESS; - break; - case ACL_TYPE_DEFAULT: - name = POSIX_ACL_XATTR_DEFAULT; - break; - default: - return ERR_PTR(-EOPNOTSUPP); - } - - size = nfsd_getxattr(fhp->fh_dentry, name, &value); - if (size < 0) - return ERR_PTR(size); - - acl = posix_acl_from_xattr(&init_user_ns, value, size); - kfree(value); - return acl; -} - -int -nfsd_set_posix_acl(struct svc_fh *fhp, int type, struct posix_acl *acl) -{ - struct inode *inode = fhp->fh_dentry->d_inode; - char *name; - void *value = NULL; - size_t size; - int error; - - if (!IS_POSIXACL(inode) || - !inode->i_op->setxattr || !inode->i_op->removexattr) - return -EOPNOTSUPP; - switch(type) { - case ACL_TYPE_ACCESS: - name = POSIX_ACL_XATTR_ACCESS; - break; - case ACL_TYPE_DEFAULT: - name = POSIX_ACL_XATTR_DEFAULT; - break; - default: - return -EOPNOTSUPP; - } - - if (acl && acl->a_count) { - size = posix_acl_xattr_size(acl->a_count); - value = kmalloc(size, GFP_KERNEL); - if (!value) - return -ENOMEM; - error = posix_acl_to_xattr(&init_user_ns, acl, value, size); - if (error < 0) - goto getout; - size = error; - } else - size = 0; - - error = fh_want_write(fhp); - if (error) - goto getout; - if (size) - error = vfs_setxattr(fhp->fh_dentry, name, value, size, 0); - else { - if (!S_ISDIR(inode->i_mode) && type == ACL_TYPE_DEFAULT) - error = 0; - else { - error = vfs_removexattr(fhp->fh_dentry, name); - if (error == -ENODATA) - error = 0; - } - } - fh_drop_write(fhp); - -getout: - kfree(value); - return error; -} -#endif /* defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) */ diff --git a/fs/nfsd/vfs.h b/fs/nfsd/vfs.h index a4be2e389670..fbe90bdb2214 100644 --- a/fs/nfsd/vfs.h +++ b/fs/nfsd/vfs.h @@ -52,9 +52,6 @@ __be32 nfsd_setattr(struct svc_rqst *, struct svc_fh *, struct iattr *, int, time_t); int nfsd_mountpoint(struct dentry *, struct svc_export *); #ifdef CONFIG_NFSD_V4 -__be32 nfsd4_set_nfs4_acl(struct svc_rqst *, struct svc_fh *, - struct nfs4_acl *); -int nfsd4_get_nfs4_acl(struct svc_rqst *, struct dentry *, struct nfs4_acl **); __be32 nfsd4_set_nfs4_label(struct svc_rqst *, struct svc_fh *, struct xdr_netobj *); #endif /* CONFIG_NFSD_V4 */ @@ -89,8 +86,6 @@ __be32 nfsd_link(struct svc_rqst *, struct svc_fh *, __be32 nfsd_rename(struct svc_rqst *, struct svc_fh *, char *, int, struct svc_fh *, char *, int); -__be32 nfsd_remove(struct svc_rqst *, - struct svc_fh *, char *, int); __be32 nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type, char *name, int len); __be32 nfsd_readdir(struct svc_rqst *, struct svc_fh *, @@ -101,11 +96,6 @@ __be32 nfsd_statfs(struct svc_rqst *, struct svc_fh *, __be32 nfsd_permission(struct svc_rqst *, struct svc_export *, struct dentry *, int); -#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) -struct posix_acl *nfsd_get_posix_acl(struct svc_fh *, int); -int nfsd_set_posix_acl(struct svc_fh *, int, struct posix_acl *); -#endif - static inline int fh_want_write(struct svc_fh *fh) { int ret = mnt_want_write(fh->fh_export->ex_path.mnt); diff --git a/fs/nfsd/xdr3.h b/fs/nfsd/xdr3.h index b6d5542a4ac8..335e04aaf7db 100644 --- a/fs/nfsd/xdr3.h +++ b/fs/nfsd/xdr3.h @@ -174,6 +174,9 @@ struct nfsd3_linkres { struct nfsd3_readdirres { __be32 status; struct svc_fh fh; + /* Just to save kmalloc on every readdirplus entry (svc_fh is a + * little large for the stack): */ + struct svc_fh scratch; int count; __be32 verf[2]; diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h index b3ed6446ed8e..5ea7df305083 100644 --- a/fs/nfsd/xdr4.h +++ b/fs/nfsd/xdr4.h @@ -228,7 +228,7 @@ struct nfsd4_open { u32 op_create; /* request */ u32 op_createmode; /* request */ u32 op_bmval[3]; /* request */ - struct iattr iattr; /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */ + struct iattr op_iattr; /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */ nfs4_verifier op_verf __attribute__((aligned(32))); /* EXCLUSIVE4 */ clientid_t op_clientid; /* request */ @@ -250,7 +250,6 @@ struct nfsd4_open { struct nfs4_acl *op_acl; struct xdr_netobj op_label; }; -#define op_iattr iattr struct nfsd4_open_confirm { stateid_t oc_req_stateid /* request */; @@ -374,7 +373,6 @@ struct nfsd4_test_stateid { struct nfsd4_free_stateid { stateid_t fr_stateid; /* request */ - __be32 fr_status; /* response */ }; /* also used for NVERIFY */ @@ -576,8 +574,6 @@ extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp, struct nfsd4_compound_state *, struct nfsd4_setclientid_confirm *setclientid_confirm); extern void nfsd4_store_cache_entry(struct nfsd4_compoundres *resp); -extern __be32 nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp, - struct nfsd4_sequence *seq); extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp, struct nfsd4_compound_state *, struct nfsd4_exchange_id *); extern __be32 nfsd4_backchannel_ctl(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_backchannel_ctl *); diff --git a/fs/nilfs2/cpfile.c b/fs/nilfs2/cpfile.c index deaa3d33a0aa..0d58075f34e2 100644 --- a/fs/nilfs2/cpfile.c +++ b/fs/nilfs2/cpfile.c @@ -942,6 +942,18 @@ int nilfs_cpfile_read(struct super_block *sb, size_t cpsize, struct inode *cpfile; int err; + if (cpsize > sb->s_blocksize) { + printk(KERN_ERR + "NILFS: too large checkpoint size: %zu bytes.\n", + cpsize); + return -EINVAL; + } else if (cpsize < NILFS_MIN_CHECKPOINT_SIZE) { + printk(KERN_ERR + "NILFS: too small checkpoint size: %zu bytes.\n", + cpsize); + return -EINVAL; + } + cpfile = nilfs_iget_locked(sb, NULL, NILFS_CPFILE_INO); if (unlikely(!cpfile)) return -ENOMEM; diff --git a/fs/nilfs2/dat.c b/fs/nilfs2/dat.c index fa0f80308c2d..0d5fada91191 100644 --- a/fs/nilfs2/dat.c +++ b/fs/nilfs2/dat.c @@ -484,6 +484,18 @@ int nilfs_dat_read(struct super_block *sb, size_t entry_size, struct nilfs_dat_info *di; int err; + if (entry_size > sb->s_blocksize) { + printk(KERN_ERR + "NILFS: too large DAT entry size: %zu bytes.\n", + entry_size); + return -EINVAL; + } else if (entry_size < NILFS_MIN_DAT_ENTRY_SIZE) { + printk(KERN_ERR + "NILFS: too small DAT entry size: %zu bytes.\n", + entry_size); + return -EINVAL; + } + dat = nilfs_iget_locked(sb, NULL, NILFS_DAT_INO); if (unlikely(!dat)) return -ENOMEM; diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c index 08fdb77852ac..f3a82fbcae02 100644 --- a/fs/nilfs2/file.c +++ b/fs/nilfs2/file.c @@ -134,6 +134,7 @@ static int nilfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) static const struct vm_operations_struct nilfs_file_vm_ops = { .fault = filemap_fault, + .map_pages = filemap_map_pages, .page_mkwrite = nilfs_page_mkwrite, .remap_pages = generic_file_remap_pages, }; diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c index 7e350c562e0e..b9c5726120e3 100644 --- a/fs/nilfs2/inode.c +++ b/fs/nilfs2/inode.c @@ -783,16 +783,14 @@ void nilfs_evict_inode(struct inode *inode) int ret; if (inode->i_nlink || !ii->i_root || unlikely(is_bad_inode(inode))) { - if (inode->i_data.nrpages) - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); nilfs_clear_inode(inode); return; } nilfs_transaction_begin(sb, &ti, 0); /* never fails */ - if (inode->i_data.nrpages) - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); /* TODO: some of the following operations may fail. */ nilfs_truncate_bmap(ii, 0); diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c index b44bdb291b84..422fb54b7377 100644 --- a/fs/nilfs2/ioctl.c +++ b/fs/nilfs2/ioctl.c @@ -37,7 +37,26 @@ #include "sufile.h" #include "dat.h" - +/** + * nilfs_ioctl_wrap_copy - wrapping function of get/set metadata info + * @nilfs: nilfs object + * @argv: vector of arguments from userspace + * @dir: set of direction flags + * @dofunc: concrete function of get/set metadata info + * + * Description: nilfs_ioctl_wrap_copy() gets/sets metadata info by means of + * calling dofunc() function on the basis of @argv argument. + * + * Return Value: On success, 0 is returned and requested metadata info + * is copied into userspace. On error, one of the following + * negative error codes is returned. + * + * %-EINVAL - Invalid arguments from userspace. + * + * %-ENOMEM - Insufficient amount of memory available. + * + * %-EFAULT - Failure during execution of requested operation. + */ static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs, struct nilfs_argv *argv, int dir, ssize_t (*dofunc)(struct the_nilfs *, @@ -57,6 +76,14 @@ static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs, if (argv->v_size > PAGE_SIZE) return -EINVAL; + /* + * Reject pairs of a start item position (argv->v_index) and a + * total count (argv->v_nmembs) which leads position 'pos' to + * overflow by the increment at the end of the loop. + */ + if (argv->v_index > ~(__u64)0 - argv->v_nmembs) + return -EINVAL; + buf = (void *)__get_free_pages(GFP_NOFS, 0); if (unlikely(!buf)) return -ENOMEM; @@ -99,6 +126,9 @@ static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs, return ret; } +/** + * nilfs_ioctl_getflags - ioctl to support lsattr + */ static int nilfs_ioctl_getflags(struct inode *inode, void __user *argp) { unsigned int flags = NILFS_I(inode)->i_flags & FS_FL_USER_VISIBLE; @@ -106,6 +136,9 @@ static int nilfs_ioctl_getflags(struct inode *inode, void __user *argp) return put_user(flags, (int __user *)argp); } +/** + * nilfs_ioctl_setflags - ioctl to support chattr + */ static int nilfs_ioctl_setflags(struct inode *inode, struct file *filp, void __user *argp) { @@ -158,11 +191,33 @@ out: return ret; } +/** + * nilfs_ioctl_getversion - get info about a file's version (generation number) + */ static int nilfs_ioctl_getversion(struct inode *inode, void __user *argp) { return put_user(inode->i_generation, (int __user *)argp); } +/** + * nilfs_ioctl_change_cpmode - change checkpoint mode (checkpoint/snapshot) + * @inode: inode object + * @filp: file object + * @cmd: ioctl's request code + * @argp: pointer on argument from userspace + * + * Description: nilfs_ioctl_change_cpmode() function changes mode of + * given checkpoint between checkpoint and snapshot state. This ioctl + * is used in chcp and mkcp utilities. + * + * Return Value: On success, 0 is returned and mode of a checkpoint is + * changed. On error, one of the following negative error codes + * is returned. + * + * %-EPERM - Operation not permitted. + * + * %-EFAULT - Failure during checkpoint mode changing. + */ static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp, unsigned int cmd, void __user *argp) { @@ -198,6 +253,25 @@ out: return ret; } +/** + * nilfs_ioctl_delete_checkpoint - remove checkpoint + * @inode: inode object + * @filp: file object + * @cmd: ioctl's request code + * @argp: pointer on argument from userspace + * + * Description: nilfs_ioctl_delete_checkpoint() function removes + * checkpoint from NILFS2 file system. This ioctl is used in rmcp + * utility. + * + * Return Value: On success, 0 is returned and a checkpoint is + * removed. On error, one of the following negative error codes + * is returned. + * + * %-EPERM - Operation not permitted. + * + * %-EFAULT - Failure during checkpoint removing. + */ static int nilfs_ioctl_delete_checkpoint(struct inode *inode, struct file *filp, unsigned int cmd, void __user *argp) @@ -229,6 +303,21 @@ out: return ret; } +/** + * nilfs_ioctl_do_get_cpinfo - callback method getting info about checkpoints + * @nilfs: nilfs object + * @posp: pointer on array of checkpoint's numbers + * @flags: checkpoint mode (checkpoint or snapshot) + * @buf: buffer for storing checkponts' info + * @size: size in bytes of one checkpoint info item in array + * @nmembs: number of checkpoints in array (numbers and infos) + * + * Description: nilfs_ioctl_do_get_cpinfo() function returns info about + * requested checkpoints. The NILFS_IOCTL_GET_CPINFO ioctl is used in + * lscp utility and by nilfs_cleanerd daemon. + * + * Return value: count of nilfs_cpinfo structures in output buffer. + */ static ssize_t nilfs_ioctl_do_get_cpinfo(struct the_nilfs *nilfs, __u64 *posp, int flags, void *buf, size_t size, size_t nmembs) @@ -242,6 +331,27 @@ nilfs_ioctl_do_get_cpinfo(struct the_nilfs *nilfs, __u64 *posp, int flags, return ret; } +/** + * nilfs_ioctl_get_cpstat - get checkpoints statistics + * @inode: inode object + * @filp: file object + * @cmd: ioctl's request code + * @argp: pointer on argument from userspace + * + * Description: nilfs_ioctl_get_cpstat() returns information about checkpoints. + * The NILFS_IOCTL_GET_CPSTAT ioctl is used by lscp, rmcp utilities + * and by nilfs_cleanerd daemon. + * + * Return Value: On success, 0 is returned, and checkpoints information is + * copied into userspace pointer @argp. On error, one of the following + * negative error codes is returned. + * + * %-EIO - I/O error. + * + * %-ENOMEM - Insufficient amount of memory available. + * + * %-EFAULT - Failure during getting checkpoints statistics. + */ static int nilfs_ioctl_get_cpstat(struct inode *inode, struct file *filp, unsigned int cmd, void __user *argp) { @@ -260,6 +370,21 @@ static int nilfs_ioctl_get_cpstat(struct inode *inode, struct file *filp, return ret; } +/** + * nilfs_ioctl_do_get_suinfo - callback method getting segment usage info + * @nilfs: nilfs object + * @posp: pointer on array of segment numbers + * @flags: *not used* + * @buf: buffer for storing suinfo array + * @size: size in bytes of one suinfo item in array + * @nmembs: count of segment numbers and suinfos in array + * + * Description: nilfs_ioctl_do_get_suinfo() function returns segment usage + * info about requested segments. The NILFS_IOCTL_GET_SUINFO ioctl is used + * in lssu, nilfs_resize utilities and by nilfs_cleanerd daemon. + * + * Return value: count of nilfs_suinfo structures in output buffer. + */ static ssize_t nilfs_ioctl_do_get_suinfo(struct the_nilfs *nilfs, __u64 *posp, int flags, void *buf, size_t size, size_t nmembs) @@ -273,6 +398,27 @@ nilfs_ioctl_do_get_suinfo(struct the_nilfs *nilfs, __u64 *posp, int flags, return ret; } +/** + * nilfs_ioctl_get_sustat - get segment usage statistics + * @inode: inode object + * @filp: file object + * @cmd: ioctl's request code + * @argp: pointer on argument from userspace + * + * Description: nilfs_ioctl_get_sustat() returns segment usage statistics. + * The NILFS_IOCTL_GET_SUSTAT ioctl is used in lssu, nilfs_resize utilities + * and by nilfs_cleanerd daemon. + * + * Return Value: On success, 0 is returned, and segment usage information is + * copied into userspace pointer @argp. On error, one of the following + * negative error codes is returned. + * + * %-EIO - I/O error. + * + * %-ENOMEM - Insufficient amount of memory available. + * + * %-EFAULT - Failure during getting segment usage statistics. + */ static int nilfs_ioctl_get_sustat(struct inode *inode, struct file *filp, unsigned int cmd, void __user *argp) { @@ -291,6 +437,21 @@ static int nilfs_ioctl_get_sustat(struct inode *inode, struct file *filp, return ret; } +/** + * nilfs_ioctl_do_get_vinfo - callback method getting virtual blocks info + * @nilfs: nilfs object + * @posp: *not used* + * @flags: *not used* + * @buf: buffer for storing array of nilfs_vinfo structures + * @size: size in bytes of one vinfo item in array + * @nmembs: count of vinfos in array + * + * Description: nilfs_ioctl_do_get_vinfo() function returns information + * on virtual block addresses. The NILFS_IOCTL_GET_VINFO ioctl is used + * by nilfs_cleanerd daemon. + * + * Return value: count of nilfs_vinfo structures in output buffer. + */ static ssize_t nilfs_ioctl_do_get_vinfo(struct the_nilfs *nilfs, __u64 *posp, int flags, void *buf, size_t size, size_t nmembs) @@ -303,6 +464,21 @@ nilfs_ioctl_do_get_vinfo(struct the_nilfs *nilfs, __u64 *posp, int flags, return ret; } +/** + * nilfs_ioctl_do_get_bdescs - callback method getting disk block descriptors + * @nilfs: nilfs object + * @posp: *not used* + * @flags: *not used* + * @buf: buffer for storing array of nilfs_bdesc structures + * @size: size in bytes of one bdesc item in array + * @nmembs: count of bdescs in array + * + * Description: nilfs_ioctl_do_get_bdescs() function returns information + * about descriptors of disk block numbers. The NILFS_IOCTL_GET_BDESCS ioctl + * is used by nilfs_cleanerd daemon. + * + * Return value: count of nilfs_bdescs structures in output buffer. + */ static ssize_t nilfs_ioctl_do_get_bdescs(struct the_nilfs *nilfs, __u64 *posp, int flags, void *buf, size_t size, size_t nmembs) @@ -329,6 +505,29 @@ nilfs_ioctl_do_get_bdescs(struct the_nilfs *nilfs, __u64 *posp, int flags, return nmembs; } +/** + * nilfs_ioctl_get_bdescs - get disk block descriptors + * @inode: inode object + * @filp: file object + * @cmd: ioctl's request code + * @argp: pointer on argument from userspace + * + * Description: nilfs_ioctl_do_get_bdescs() function returns information + * about descriptors of disk block numbers. The NILFS_IOCTL_GET_BDESCS ioctl + * is used by nilfs_cleanerd daemon. + * + * Return Value: On success, 0 is returned, and disk block descriptors are + * copied into userspace pointer @argp. On error, one of the following + * negative error codes is returned. + * + * %-EINVAL - Invalid arguments from userspace. + * + * %-EIO - I/O error. + * + * %-ENOMEM - Insufficient amount of memory available. + * + * %-EFAULT - Failure during getting disk block descriptors. + */ static int nilfs_ioctl_get_bdescs(struct inode *inode, struct file *filp, unsigned int cmd, void __user *argp) { @@ -352,6 +551,26 @@ static int nilfs_ioctl_get_bdescs(struct inode *inode, struct file *filp, return ret; } +/** + * nilfs_ioctl_move_inode_block - prepare data/node block for moving by GC + * @inode: inode object + * @vdesc: descriptor of virtual block number + * @buffers: list of moving buffers + * + * Description: nilfs_ioctl_move_inode_block() function registers data/node + * buffer in the GC pagecache and submit read request. + * + * Return Value: On success, 0 is returned. On error, one of the following + * negative error codes is returned. + * + * %-EIO - I/O error. + * + * %-ENOMEM - Insufficient amount of memory available. + * + * %-ENOENT - Requested block doesn't exist. + * + * %-EEXIST - Blocks conflict is detected. + */ static int nilfs_ioctl_move_inode_block(struct inode *inode, struct nilfs_vdesc *vdesc, struct list_head *buffers) @@ -397,6 +616,19 @@ static int nilfs_ioctl_move_inode_block(struct inode *inode, return 0; } +/** + * nilfs_ioctl_move_blocks - move valid inode's blocks during garbage collection + * @sb: superblock object + * @argv: vector of arguments from userspace + * @buf: array of nilfs_vdesc structures + * + * Description: nilfs_ioctl_move_blocks() function reads valid data/node + * blocks that garbage collector specified with the array of nilfs_vdesc + * structures and stores them into page caches of GC inodes. + * + * Return Value: Number of processed nilfs_vdesc structures or + * error code, otherwise. + */ static int nilfs_ioctl_move_blocks(struct super_block *sb, struct nilfs_argv *argv, void *buf) { @@ -462,6 +694,25 @@ static int nilfs_ioctl_move_blocks(struct super_block *sb, return ret; } +/** + * nilfs_ioctl_delete_checkpoints - delete checkpoints + * @nilfs: nilfs object + * @argv: vector of arguments from userspace + * @buf: array of periods of checkpoints numbers + * + * Description: nilfs_ioctl_delete_checkpoints() function deletes checkpoints + * in the period from p_start to p_end, excluding p_end itself. The checkpoints + * which have been already deleted are ignored. + * + * Return Value: Number of processed nilfs_period structures or + * error code, otherwise. + * + * %-EIO - I/O error. + * + * %-ENOMEM - Insufficient amount of memory available. + * + * %-EINVAL - invalid checkpoints. + */ static int nilfs_ioctl_delete_checkpoints(struct the_nilfs *nilfs, struct nilfs_argv *argv, void *buf) { @@ -479,6 +730,24 @@ static int nilfs_ioctl_delete_checkpoints(struct the_nilfs *nilfs, return nmembs; } +/** + * nilfs_ioctl_free_vblocknrs - free virtual block numbers + * @nilfs: nilfs object + * @argv: vector of arguments from userspace + * @buf: array of virtual block numbers + * + * Description: nilfs_ioctl_free_vblocknrs() function frees + * the virtual block numbers specified by @buf and @argv->v_nmembs. + * + * Return Value: Number of processed virtual block numbers or + * error code, otherwise. + * + * %-EIO - I/O error. + * + * %-ENOMEM - Insufficient amount of memory available. + * + * %-ENOENT - The virtual block number have not been allocated. + */ static int nilfs_ioctl_free_vblocknrs(struct the_nilfs *nilfs, struct nilfs_argv *argv, void *buf) { @@ -490,6 +759,24 @@ static int nilfs_ioctl_free_vblocknrs(struct the_nilfs *nilfs, return (ret < 0) ? ret : nmembs; } +/** + * nilfs_ioctl_mark_blocks_dirty - mark blocks dirty + * @nilfs: nilfs object + * @argv: vector of arguments from userspace + * @buf: array of block descriptors + * + * Description: nilfs_ioctl_mark_blocks_dirty() function marks + * metadata file or data blocks as dirty. + * + * Return Value: Number of processed block descriptors or + * error code, otherwise. + * + * %-ENOMEM - Insufficient memory available. + * + * %-EIO - I/O error + * + * %-ENOENT - the specified block does not exist (hole block) + */ static int nilfs_ioctl_mark_blocks_dirty(struct the_nilfs *nilfs, struct nilfs_argv *argv, void *buf) { @@ -571,6 +858,20 @@ int nilfs_ioctl_prepare_clean_segments(struct the_nilfs *nilfs, return ret; } +/** + * nilfs_ioctl_clean_segments - clean segments + * @inode: inode object + * @filp: file object + * @cmd: ioctl's request code + * @argp: pointer on argument from userspace + * + * Description: nilfs_ioctl_clean_segments() function makes garbage + * collection operation in the environment of requested parameters + * from userspace. The NILFS_IOCTL_CLEAN_SEGMENTS ioctl is used by + * nilfs_cleanerd daemon. + * + * Return Value: On success, 0 is returned or error code, otherwise. + */ static int nilfs_ioctl_clean_segments(struct inode *inode, struct file *filp, unsigned int cmd, void __user *argp) { @@ -682,6 +983,33 @@ out: return ret; } +/** + * nilfs_ioctl_sync - make a checkpoint + * @inode: inode object + * @filp: file object + * @cmd: ioctl's request code + * @argp: pointer on argument from userspace + * + * Description: nilfs_ioctl_sync() function constructs a logical segment + * for checkpointing. This function guarantees that all modified data + * and metadata are written out to the device when it successfully + * returned. + * + * Return Value: On success, 0 is retured. On errors, one of the following + * negative error code is returned. + * + * %-EROFS - Read only filesystem. + * + * %-EIO - I/O error + * + * %-ENOSPC - No space left on device (only in a panic state). + * + * %-ERESTARTSYS - Interrupted. + * + * %-ENOMEM - Insufficient memory available. + * + * %-EFAULT - Failure during execution of requested operation. + */ static int nilfs_ioctl_sync(struct inode *inode, struct file *filp, unsigned int cmd, void __user *argp) { @@ -710,6 +1038,14 @@ static int nilfs_ioctl_sync(struct inode *inode, struct file *filp, return 0; } +/** + * nilfs_ioctl_resize - resize NILFS2 volume + * @inode: inode object + * @filp: file object + * @argp: pointer on argument from userspace + * + * Return Value: On success, 0 is returned or error code, otherwise. + */ static int nilfs_ioctl_resize(struct inode *inode, struct file *filp, void __user *argp) { @@ -735,6 +1071,59 @@ out: return ret; } +/** + * nilfs_ioctl_trim_fs() - trim ioctl handle function + * @inode: inode object + * @argp: pointer on argument from userspace + * + * Decription: nilfs_ioctl_trim_fs is the FITRIM ioctl handle function. It + * checks the arguments from userspace and calls nilfs_sufile_trim_fs, which + * performs the actual trim operation. + * + * Return Value: On success, 0 is returned or negative error code, otherwise. + */ +static int nilfs_ioctl_trim_fs(struct inode *inode, void __user *argp) +{ + struct the_nilfs *nilfs = inode->i_sb->s_fs_info; + struct request_queue *q = bdev_get_queue(nilfs->ns_bdev); + struct fstrim_range range; + int ret; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (!blk_queue_discard(q)) + return -EOPNOTSUPP; + + if (copy_from_user(&range, argp, sizeof(range))) + return -EFAULT; + + range.minlen = max_t(u64, range.minlen, q->limits.discard_granularity); + + down_read(&nilfs->ns_segctor_sem); + ret = nilfs_sufile_trim_fs(nilfs->ns_sufile, &range); + up_read(&nilfs->ns_segctor_sem); + + if (ret < 0) + return ret; + + if (copy_to_user(argp, &range, sizeof(range))) + return -EFAULT; + + return 0; +} + +/** + * nilfs_ioctl_set_alloc_range - limit range of segments to be allocated + * @inode: inode object + * @argp: pointer on argument from userspace + * + * Decription: nilfs_ioctl_set_alloc_range() function defines lower limit + * of segments in bytes and upper limit of segments in bytes. + * The NILFS_IOCTL_SET_ALLOC_RANGE is used by nilfs_resize utility. + * + * Return Value: On success, 0 is returned or error code, otherwise. + */ static int nilfs_ioctl_set_alloc_range(struct inode *inode, void __user *argp) { struct the_nilfs *nilfs = inode->i_sb->s_fs_info; @@ -767,6 +1156,28 @@ out: return ret; } +/** + * nilfs_ioctl_get_info - wrapping function of get metadata info + * @inode: inode object + * @filp: file object + * @cmd: ioctl's request code + * @argp: pointer on argument from userspace + * @membsz: size of an item in bytes + * @dofunc: concrete function of getting metadata info + * + * Description: nilfs_ioctl_get_info() gets metadata info by means of + * calling dofunc() function. + * + * Return Value: On success, 0 is returned and requested metadata info + * is copied into userspace. On error, one of the following + * negative error codes is returned. + * + * %-EINVAL - Invalid arguments from userspace. + * + * %-ENOMEM - Insufficient amount of memory available. + * + * %-EFAULT - Failure during execution of requested operation. + */ static int nilfs_ioctl_get_info(struct inode *inode, struct file *filp, unsigned int cmd, void __user *argp, size_t membsz, @@ -794,6 +1205,95 @@ static int nilfs_ioctl_get_info(struct inode *inode, struct file *filp, return ret; } +/** + * nilfs_ioctl_set_suinfo - set segment usage info + * @inode: inode object + * @filp: file object + * @cmd: ioctl's request code + * @argp: pointer on argument from userspace + * + * Description: Expects an array of nilfs_suinfo_update structures + * encapsulated in nilfs_argv and updates the segment usage info + * according to the flags in nilfs_suinfo_update. + * + * Return Value: On success, 0 is returned. On error, one of the + * following negative error codes is returned. + * + * %-EPERM - Not enough permissions + * + * %-EFAULT - Error copying input data + * + * %-EIO - I/O error. + * + * %-ENOMEM - Insufficient amount of memory available. + * + * %-EINVAL - Invalid values in input (segment number, flags or nblocks) + */ +static int nilfs_ioctl_set_suinfo(struct inode *inode, struct file *filp, + unsigned int cmd, void __user *argp) +{ + struct the_nilfs *nilfs = inode->i_sb->s_fs_info; + struct nilfs_transaction_info ti; + struct nilfs_argv argv; + size_t len; + void __user *base; + void *kbuf; + int ret; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + ret = mnt_want_write_file(filp); + if (ret) + return ret; + + ret = -EFAULT; + if (copy_from_user(&argv, argp, sizeof(argv))) + goto out; + + ret = -EINVAL; + if (argv.v_size < sizeof(struct nilfs_suinfo_update)) + goto out; + + if (argv.v_nmembs > nilfs->ns_nsegments) + goto out; + + if (argv.v_nmembs >= UINT_MAX / argv.v_size) + goto out; + + len = argv.v_size * argv.v_nmembs; + if (!len) { + ret = 0; + goto out; + } + + base = (void __user *)(unsigned long)argv.v_base; + kbuf = vmalloc(len); + if (!kbuf) { + ret = -ENOMEM; + goto out; + } + + if (copy_from_user(kbuf, base, len)) { + ret = -EFAULT; + goto out_free; + } + + nilfs_transaction_begin(inode->i_sb, &ti, 0); + ret = nilfs_sufile_set_suinfo(nilfs->ns_sufile, kbuf, argv.v_size, + argv.v_nmembs); + if (unlikely(ret < 0)) + nilfs_transaction_abort(inode->i_sb); + else + nilfs_transaction_commit(inode->i_sb); /* never fails */ + +out_free: + vfree(kbuf); +out: + mnt_drop_write_file(filp); + return ret; +} + long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { struct inode *inode = file_inode(filp); @@ -820,6 +1320,8 @@ long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) return nilfs_ioctl_get_info(inode, filp, cmd, argp, sizeof(struct nilfs_suinfo), nilfs_ioctl_do_get_suinfo); + case NILFS_IOCTL_SET_SUINFO: + return nilfs_ioctl_set_suinfo(inode, filp, cmd, argp); case NILFS_IOCTL_GET_SUSTAT: return nilfs_ioctl_get_sustat(inode, filp, cmd, argp); case NILFS_IOCTL_GET_VINFO: @@ -836,6 +1338,8 @@ long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) return nilfs_ioctl_resize(inode, filp, argp); case NILFS_IOCTL_SET_ALLOC_RANGE: return nilfs_ioctl_set_alloc_range(inode, argp); + case FITRIM: + return nilfs_ioctl_trim_fs(inode, argp); default: return -ENOTTY; } @@ -859,6 +1363,7 @@ long nilfs_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) case NILFS_IOCTL_GET_CPINFO: case NILFS_IOCTL_GET_CPSTAT: case NILFS_IOCTL_GET_SUINFO: + case NILFS_IOCTL_SET_SUINFO: case NILFS_IOCTL_GET_SUSTAT: case NILFS_IOCTL_GET_VINFO: case NILFS_IOCTL_GET_BDESCS: @@ -866,6 +1371,7 @@ long nilfs_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) case NILFS_IOCTL_SYNC: case NILFS_IOCTL_RESIZE: case NILFS_IOCTL_SET_ALLOC_RANGE: + case FITRIM: break; default: return -ENOIOCTLCMD; diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c index 2d8be51f90dc..dc3a9efdaab8 100644 --- a/fs/nilfs2/segbuf.c +++ b/fs/nilfs2/segbuf.c @@ -416,7 +416,8 @@ static struct bio *nilfs_alloc_seg_bio(struct the_nilfs *nilfs, sector_t start, } if (likely(bio)) { bio->bi_bdev = nilfs->ns_bdev; - bio->bi_sector = start << (nilfs->ns_blocksize_bits - 9); + bio->bi_iter.bi_sector = + start << (nilfs->ns_blocksize_bits - 9); } return bio; } diff --git a/fs/nilfs2/sufile.c b/fs/nilfs2/sufile.c index 3127e9f438a7..2a869c35c362 100644 --- a/fs/nilfs2/sufile.c +++ b/fs/nilfs2/sufile.c @@ -870,6 +870,289 @@ ssize_t nilfs_sufile_get_suinfo(struct inode *sufile, __u64 segnum, void *buf, } /** + * nilfs_sufile_set_suinfo - sets segment usage info + * @sufile: inode of segment usage file + * @buf: array of suinfo_update + * @supsz: byte size of suinfo_update + * @nsup: size of suinfo_update array + * + * Description: Takes an array of nilfs_suinfo_update structs and updates + * segment usage accordingly. Only the fields indicated by the sup_flags + * are updated. + * + * Return Value: On success, 0 is returned. On error, one of the + * following negative error codes is returned. + * + * %-EIO - I/O error. + * + * %-ENOMEM - Insufficient amount of memory available. + * + * %-EINVAL - Invalid values in input (segment number, flags or nblocks) + */ +ssize_t nilfs_sufile_set_suinfo(struct inode *sufile, void *buf, + unsigned supsz, size_t nsup) +{ + struct the_nilfs *nilfs = sufile->i_sb->s_fs_info; + struct buffer_head *header_bh, *bh; + struct nilfs_suinfo_update *sup, *supend = buf + supsz * nsup; + struct nilfs_segment_usage *su; + void *kaddr; + unsigned long blkoff, prev_blkoff; + int cleansi, cleansu, dirtysi, dirtysu; + long ncleaned = 0, ndirtied = 0; + int ret = 0; + + if (unlikely(nsup == 0)) + return ret; + + for (sup = buf; sup < supend; sup = (void *)sup + supsz) { + if (sup->sup_segnum >= nilfs->ns_nsegments + || (sup->sup_flags & + (~0UL << __NR_NILFS_SUINFO_UPDATE_FIELDS)) + || (nilfs_suinfo_update_nblocks(sup) && + sup->sup_sui.sui_nblocks > + nilfs->ns_blocks_per_segment)) + return -EINVAL; + } + + down_write(&NILFS_MDT(sufile)->mi_sem); + + ret = nilfs_sufile_get_header_block(sufile, &header_bh); + if (ret < 0) + goto out_sem; + + sup = buf; + blkoff = nilfs_sufile_get_blkoff(sufile, sup->sup_segnum); + ret = nilfs_mdt_get_block(sufile, blkoff, 1, NULL, &bh); + if (ret < 0) + goto out_header; + + for (;;) { + kaddr = kmap_atomic(bh->b_page); + su = nilfs_sufile_block_get_segment_usage( + sufile, sup->sup_segnum, bh, kaddr); + + if (nilfs_suinfo_update_lastmod(sup)) + su->su_lastmod = cpu_to_le64(sup->sup_sui.sui_lastmod); + + if (nilfs_suinfo_update_nblocks(sup)) + su->su_nblocks = cpu_to_le32(sup->sup_sui.sui_nblocks); + + if (nilfs_suinfo_update_flags(sup)) { + /* + * Active flag is a virtual flag projected by running + * nilfs kernel code - drop it not to write it to + * disk. + */ + sup->sup_sui.sui_flags &= + ~(1UL << NILFS_SEGMENT_USAGE_ACTIVE); + + cleansi = nilfs_suinfo_clean(&sup->sup_sui); + cleansu = nilfs_segment_usage_clean(su); + dirtysi = nilfs_suinfo_dirty(&sup->sup_sui); + dirtysu = nilfs_segment_usage_dirty(su); + + if (cleansi && !cleansu) + ++ncleaned; + else if (!cleansi && cleansu) + --ncleaned; + + if (dirtysi && !dirtysu) + ++ndirtied; + else if (!dirtysi && dirtysu) + --ndirtied; + + su->su_flags = cpu_to_le32(sup->sup_sui.sui_flags); + } + + kunmap_atomic(kaddr); + + sup = (void *)sup + supsz; + if (sup >= supend) + break; + + prev_blkoff = blkoff; + blkoff = nilfs_sufile_get_blkoff(sufile, sup->sup_segnum); + if (blkoff == prev_blkoff) + continue; + + /* get different block */ + mark_buffer_dirty(bh); + put_bh(bh); + ret = nilfs_mdt_get_block(sufile, blkoff, 1, NULL, &bh); + if (unlikely(ret < 0)) + goto out_mark; + } + mark_buffer_dirty(bh); + put_bh(bh); + + out_mark: + if (ncleaned || ndirtied) { + nilfs_sufile_mod_counter(header_bh, (u64)ncleaned, + (u64)ndirtied); + NILFS_SUI(sufile)->ncleansegs += ncleaned; + } + nilfs_mdt_mark_dirty(sufile); + out_header: + put_bh(header_bh); + out_sem: + up_write(&NILFS_MDT(sufile)->mi_sem); + return ret; +} + +/** + * nilfs_sufile_trim_fs() - trim ioctl handle function + * @sufile: inode of segment usage file + * @range: fstrim_range structure + * + * start: First Byte to trim + * len: number of Bytes to trim from start + * minlen: minimum extent length in Bytes + * + * Decription: nilfs_sufile_trim_fs goes through all segments containing bytes + * from start to start+len. start is rounded up to the next block boundary + * and start+len is rounded down. For each clean segment blkdev_issue_discard + * function is invoked. + * + * Return Value: On success, 0 is returned or negative error code, otherwise. + */ +int nilfs_sufile_trim_fs(struct inode *sufile, struct fstrim_range *range) +{ + struct the_nilfs *nilfs = sufile->i_sb->s_fs_info; + struct buffer_head *su_bh; + struct nilfs_segment_usage *su; + void *kaddr; + size_t n, i, susz = NILFS_MDT(sufile)->mi_entry_size; + sector_t seg_start, seg_end, start_block, end_block; + sector_t start = 0, nblocks = 0; + u64 segnum, segnum_end, minlen, len, max_blocks, ndiscarded = 0; + int ret = 0; + unsigned int sects_per_block; + + sects_per_block = (1 << nilfs->ns_blocksize_bits) / + bdev_logical_block_size(nilfs->ns_bdev); + len = range->len >> nilfs->ns_blocksize_bits; + minlen = range->minlen >> nilfs->ns_blocksize_bits; + max_blocks = ((u64)nilfs->ns_nsegments * nilfs->ns_blocks_per_segment); + + if (!len || range->start >= max_blocks << nilfs->ns_blocksize_bits) + return -EINVAL; + + start_block = (range->start + nilfs->ns_blocksize - 1) >> + nilfs->ns_blocksize_bits; + + /* + * range->len can be very large (actually, it is set to + * ULLONG_MAX by default) - truncate upper end of the range + * carefully so as not to overflow. + */ + if (max_blocks - start_block < len) + end_block = max_blocks - 1; + else + end_block = start_block + len - 1; + + segnum = nilfs_get_segnum_of_block(nilfs, start_block); + segnum_end = nilfs_get_segnum_of_block(nilfs, end_block); + + down_read(&NILFS_MDT(sufile)->mi_sem); + + while (segnum <= segnum_end) { + n = nilfs_sufile_segment_usages_in_block(sufile, segnum, + segnum_end); + + ret = nilfs_sufile_get_segment_usage_block(sufile, segnum, 0, + &su_bh); + if (ret < 0) { + if (ret != -ENOENT) + goto out_sem; + /* hole */ + segnum += n; + continue; + } + + kaddr = kmap_atomic(su_bh->b_page); + su = nilfs_sufile_block_get_segment_usage(sufile, segnum, + su_bh, kaddr); + for (i = 0; i < n; ++i, ++segnum, su = (void *)su + susz) { + if (!nilfs_segment_usage_clean(su)) + continue; + + nilfs_get_segment_range(nilfs, segnum, &seg_start, + &seg_end); + + if (!nblocks) { + /* start new extent */ + start = seg_start; + nblocks = seg_end - seg_start + 1; + continue; + } + + if (start + nblocks == seg_start) { + /* add to previous extent */ + nblocks += seg_end - seg_start + 1; + continue; + } + + /* discard previous extent */ + if (start < start_block) { + nblocks -= start_block - start; + start = start_block; + } + + if (nblocks >= minlen) { + kunmap_atomic(kaddr); + + ret = blkdev_issue_discard(nilfs->ns_bdev, + start * sects_per_block, + nblocks * sects_per_block, + GFP_NOFS, 0); + if (ret < 0) { + put_bh(su_bh); + goto out_sem; + } + + ndiscarded += nblocks; + kaddr = kmap_atomic(su_bh->b_page); + su = nilfs_sufile_block_get_segment_usage( + sufile, segnum, su_bh, kaddr); + } + + /* start new extent */ + start = seg_start; + nblocks = seg_end - seg_start + 1; + } + kunmap_atomic(kaddr); + put_bh(su_bh); + } + + + if (nblocks) { + /* discard last extent */ + if (start < start_block) { + nblocks -= start_block - start; + start = start_block; + } + if (start + nblocks > end_block + 1) + nblocks = end_block - start + 1; + + if (nblocks >= minlen) { + ret = blkdev_issue_discard(nilfs->ns_bdev, + start * sects_per_block, + nblocks * sects_per_block, + GFP_NOFS, 0); + if (!ret) + ndiscarded += nblocks; + } + } + +out_sem: + up_read(&NILFS_MDT(sufile)->mi_sem); + + range->len = ndiscarded << nilfs->ns_blocksize_bits; + return ret; +} + +/** * nilfs_sufile_read - read or get sufile inode * @sb: super block instance * @susize: size of a segment usage entry @@ -886,6 +1169,18 @@ int nilfs_sufile_read(struct super_block *sb, size_t susize, void *kaddr; int err; + if (susize > sb->s_blocksize) { + printk(KERN_ERR + "NILFS: too large segment usage size: %zu bytes.\n", + susize); + return -EINVAL; + } else if (susize < NILFS_MIN_SEGMENT_USAGE_SIZE) { + printk(KERN_ERR + "NILFS: too small segment usage size: %zu bytes.\n", + susize); + return -EINVAL; + } + sufile = nilfs_iget_locked(sb, NULL, NILFS_SUFILE_INO); if (unlikely(!sufile)) return -ENOMEM; diff --git a/fs/nilfs2/sufile.h b/fs/nilfs2/sufile.h index e84bc5b51fc1..b8afd72f2379 100644 --- a/fs/nilfs2/sufile.h +++ b/fs/nilfs2/sufile.h @@ -44,6 +44,7 @@ int nilfs_sufile_set_segment_usage(struct inode *sufile, __u64 segnum, int nilfs_sufile_get_stat(struct inode *, struct nilfs_sustat *); ssize_t nilfs_sufile_get_suinfo(struct inode *, __u64, void *, unsigned, size_t); +ssize_t nilfs_sufile_set_suinfo(struct inode *, void *, unsigned , size_t); int nilfs_sufile_updatev(struct inode *, __u64 *, size_t, int, size_t *, void (*dofunc)(struct inode *, __u64, @@ -65,6 +66,7 @@ void nilfs_sufile_do_set_error(struct inode *, __u64, struct buffer_head *, int nilfs_sufile_resize(struct inode *sufile, __u64 newnsegs); int nilfs_sufile_read(struct super_block *sb, size_t susize, struct nilfs_inode *raw_inode, struct inode **inodep); +int nilfs_sufile_trim_fs(struct inode *sufile, struct fstrim_range *range); /** * nilfs_sufile_scrap - make a segment garbage diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index 7ac2a122ca1d..8c532b2ca3ab 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -1129,6 +1129,7 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data) unsigned long old_mount_opt; int err; + sync_filesystem(sb); old_sb_flags = sb->s_flags; old_mount_opt = nilfs->ns_mount_opt; diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c index 94c451ce6d24..8ba8229ba076 100644 --- a/fs/nilfs2/the_nilfs.c +++ b/fs/nilfs2/the_nilfs.c @@ -399,6 +399,16 @@ static int nilfs_store_disk_layout(struct the_nilfs *nilfs, return -EINVAL; nilfs->ns_inode_size = le16_to_cpu(sbp->s_inode_size); + if (nilfs->ns_inode_size > nilfs->ns_blocksize) { + printk(KERN_ERR "NILFS: too large inode size: %d bytes.\n", + nilfs->ns_inode_size); + return -EINVAL; + } else if (nilfs->ns_inode_size < NILFS_MIN_INODE_SIZE) { + printk(KERN_ERR "NILFS: too small inode size: %d bytes.\n", + nilfs->ns_inode_size); + return -EINVAL; + } + nilfs->ns_first_ino = le32_to_cpu(sbp->s_first_ino); nilfs->ns_blocks_per_segment = le32_to_cpu(sbp->s_blocks_per_segment); diff --git a/fs/nls/mac-celtic.c b/fs/nls/mac-celtic.c index 634a8b717b02..266c2d7d50bd 100644 --- a/fs/nls/mac-celtic.c +++ b/fs/nls/mac-celtic.c @@ -583,7 +583,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_macceltic(void) diff --git a/fs/nls/mac-centeuro.c b/fs/nls/mac-centeuro.c index 979e6265ac5e..9789c6057551 100644 --- a/fs/nls/mac-centeuro.c +++ b/fs/nls/mac-centeuro.c @@ -513,7 +513,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_maccenteuro(void) diff --git a/fs/nls/mac-croatian.c b/fs/nls/mac-croatian.c index dd3f675911ee..bb19e7a07d43 100644 --- a/fs/nls/mac-croatian.c +++ b/fs/nls/mac-croatian.c @@ -583,7 +583,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_maccroatian(void) diff --git a/fs/nls/mac-cyrillic.c b/fs/nls/mac-cyrillic.c index 1112c84dd8bb..2a7dea36acba 100644 --- a/fs/nls/mac-cyrillic.c +++ b/fs/nls/mac-cyrillic.c @@ -478,7 +478,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_maccyrillic(void) diff --git a/fs/nls/mac-gaelic.c b/fs/nls/mac-gaelic.c index 2de9158409c8..77b001653588 100644 --- a/fs/nls/mac-gaelic.c +++ b/fs/nls/mac-gaelic.c @@ -548,7 +548,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_macgaelic(void) diff --git a/fs/nls/mac-greek.c b/fs/nls/mac-greek.c index a86310082802..1eccf499e2eb 100644 --- a/fs/nls/mac-greek.c +++ b/fs/nls/mac-greek.c @@ -478,7 +478,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_macgreek(void) diff --git a/fs/nls/mac-iceland.c b/fs/nls/mac-iceland.c index babe2998d5ce..cbd0875c6d69 100644 --- a/fs/nls/mac-iceland.c +++ b/fs/nls/mac-iceland.c @@ -583,7 +583,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_maciceland(void) diff --git a/fs/nls/mac-inuit.c b/fs/nls/mac-inuit.c index 312364f010dc..fba8357aaf03 100644 --- a/fs/nls/mac-inuit.c +++ b/fs/nls/mac-inuit.c @@ -513,7 +513,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_macinuit(void) diff --git a/fs/nls/mac-roman.c b/fs/nls/mac-roman.c index 53ce0809cbd2..b6a98a5208cd 100644 --- a/fs/nls/mac-roman.c +++ b/fs/nls/mac-roman.c @@ -618,7 +618,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_macroman(void) diff --git a/fs/nls/mac-romanian.c b/fs/nls/mac-romanian.c index add6f7a0c666..25547f023638 100644 --- a/fs/nls/mac-romanian.c +++ b/fs/nls/mac-romanian.c @@ -583,7 +583,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_macromanian(void) diff --git a/fs/nls/mac-turkish.c b/fs/nls/mac-turkish.c index dffa96d5de00..b5454bc7b7fa 100644 --- a/fs/nls/mac-turkish.c +++ b/fs/nls/mac-turkish.c @@ -583,7 +583,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_macturkish(void) diff --git a/fs/nls/nls_ascii.c b/fs/nls/nls_ascii.c index 7020e940f74e..a2620650d5e4 100644 --- a/fs/nls/nls_ascii.c +++ b/fs/nls/nls_ascii.c @@ -148,7 +148,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_ascii(void) diff --git a/fs/nls/nls_base.c b/fs/nls/nls_base.c index fea6bd5831dc..52ccd34b1e79 100644 --- a/fs/nls/nls_base.c +++ b/fs/nls/nls_base.c @@ -232,13 +232,14 @@ int utf16s_to_utf8s(const wchar_t *pwcs, int inlen, enum utf16_endian endian, } EXPORT_SYMBOL(utf16s_to_utf8s); -int register_nls(struct nls_table * nls) +int __register_nls(struct nls_table *nls, struct module *owner) { struct nls_table ** tmp = &tables; if (nls->next) return -EBUSY; + nls->owner = owner; spin_lock(&nls_lock); while (*tmp) { if (nls == *tmp) { @@ -252,6 +253,7 @@ int register_nls(struct nls_table * nls) spin_unlock(&nls_lock); return 0; } +EXPORT_SYMBOL(__register_nls); int unregister_nls(struct nls_table * nls) { @@ -538,7 +540,6 @@ struct nls_table *load_nls_default(void) return &default_table; } -EXPORT_SYMBOL(register_nls); EXPORT_SYMBOL(unregister_nls); EXPORT_SYMBOL(unload_nls); EXPORT_SYMBOL(load_nls); diff --git a/fs/nls/nls_cp1250.c b/fs/nls/nls_cp1250.c index c8471fe78e4e..ace3e19d3407 100644 --- a/fs/nls/nls_cp1250.c +++ b/fs/nls/nls_cp1250.c @@ -329,7 +329,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp1250(void) diff --git a/fs/nls/nls_cp1251.c b/fs/nls/nls_cp1251.c index 1939b46e772f..9273ddfd08a1 100644 --- a/fs/nls/nls_cp1251.c +++ b/fs/nls/nls_cp1251.c @@ -283,7 +283,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp1251(void) diff --git a/fs/nls/nls_cp1255.c b/fs/nls/nls_cp1255.c index 8120ae2e091a..1caf5dfed85b 100644 --- a/fs/nls/nls_cp1255.c +++ b/fs/nls/nls_cp1255.c @@ -365,7 +365,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp1255(void) diff --git a/fs/nls/nls_cp437.c b/fs/nls/nls_cp437.c index ff37a4628ce4..7ddb830da3fd 100644 --- a/fs/nls/nls_cp437.c +++ b/fs/nls/nls_cp437.c @@ -369,7 +369,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp437(void) diff --git a/fs/nls/nls_cp737.c b/fs/nls/nls_cp737.c index f5576b8be1b9..c593f683a0cd 100644 --- a/fs/nls/nls_cp737.c +++ b/fs/nls/nls_cp737.c @@ -332,7 +332,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp737(void) diff --git a/fs/nls/nls_cp775.c b/fs/nls/nls_cp775.c index 4905635d1c00..554c863745f2 100644 --- a/fs/nls/nls_cp775.c +++ b/fs/nls/nls_cp775.c @@ -301,7 +301,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp775(void) diff --git a/fs/nls/nls_cp850.c b/fs/nls/nls_cp850.c index fe5bdad50e2b..56cccd14b40b 100644 --- a/fs/nls/nls_cp850.c +++ b/fs/nls/nls_cp850.c @@ -297,7 +297,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp850(void) diff --git a/fs/nls/nls_cp852.c b/fs/nls/nls_cp852.c index ceb1c0166dd8..7cdc05ac1d40 100644 --- a/fs/nls/nls_cp852.c +++ b/fs/nls/nls_cp852.c @@ -319,7 +319,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp852(void) diff --git a/fs/nls/nls_cp855.c b/fs/nls/nls_cp855.c index cc7f5fb2e0c2..7426eea05663 100644 --- a/fs/nls/nls_cp855.c +++ b/fs/nls/nls_cp855.c @@ -281,7 +281,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp855(void) diff --git a/fs/nls/nls_cp857.c b/fs/nls/nls_cp857.c index e418e198e8d8..098309733ebd 100644 --- a/fs/nls/nls_cp857.c +++ b/fs/nls/nls_cp857.c @@ -283,7 +283,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp857(void) diff --git a/fs/nls/nls_cp860.c b/fs/nls/nls_cp860.c index a86c97d1aa34..84224478e731 100644 --- a/fs/nls/nls_cp860.c +++ b/fs/nls/nls_cp860.c @@ -346,7 +346,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp860(void) diff --git a/fs/nls/nls_cp861.c b/fs/nls/nls_cp861.c index bd920227acdf..dc873e4be092 100644 --- a/fs/nls/nls_cp861.c +++ b/fs/nls/nls_cp861.c @@ -369,7 +369,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp861(void) diff --git a/fs/nls/nls_cp862.c b/fs/nls/nls_cp862.c index e9b68eb3daf0..d5263e3c5566 100644 --- a/fs/nls/nls_cp862.c +++ b/fs/nls/nls_cp862.c @@ -403,7 +403,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp862(void) diff --git a/fs/nls/nls_cp863.c b/fs/nls/nls_cp863.c index f8a9b07ab4e2..051c9832e36a 100644 --- a/fs/nls/nls_cp863.c +++ b/fs/nls/nls_cp863.c @@ -363,7 +363,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp863(void) diff --git a/fs/nls/nls_cp864.c b/fs/nls/nls_cp864.c index 8d31f435fc6f..97eb1273b2f7 100644 --- a/fs/nls/nls_cp864.c +++ b/fs/nls/nls_cp864.c @@ -389,7 +389,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp864(void) diff --git a/fs/nls/nls_cp865.c b/fs/nls/nls_cp865.c index 4bd902fe3ec9..111214228525 100644 --- a/fs/nls/nls_cp865.c +++ b/fs/nls/nls_cp865.c @@ -369,7 +369,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp865(void) diff --git a/fs/nls/nls_cp866.c b/fs/nls/nls_cp866.c index bdc7cb391398..ffdcbc3fc38d 100644 --- a/fs/nls/nls_cp866.c +++ b/fs/nls/nls_cp866.c @@ -287,7 +287,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp866(void) diff --git a/fs/nls/nls_cp869.c b/fs/nls/nls_cp869.c index 9f283a2b151a..3b5a34589354 100644 --- a/fs/nls/nls_cp869.c +++ b/fs/nls/nls_cp869.c @@ -297,7 +297,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp869(void) diff --git a/fs/nls/nls_cp874.c b/fs/nls/nls_cp874.c index 0b3c4886f8c0..8dfaa10710fa 100644 --- a/fs/nls/nls_cp874.c +++ b/fs/nls/nls_cp874.c @@ -256,7 +256,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp874(void) diff --git a/fs/nls/nls_cp932.c b/fs/nls/nls_cp932.c index 0ffed6f1cebb..67b7398e8483 100644 --- a/fs/nls/nls_cp932.c +++ b/fs/nls/nls_cp932.c @@ -7914,7 +7914,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp932(void) diff --git a/fs/nls/nls_cp936.c b/fs/nls/nls_cp936.c index 82770301bc3d..c96546cfec9f 100644 --- a/fs/nls/nls_cp936.c +++ b/fs/nls/nls_cp936.c @@ -11092,7 +11092,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp936(void) diff --git a/fs/nls/nls_cp949.c b/fs/nls/nls_cp949.c index 8a7a2fe85c65..199171e97aa4 100644 --- a/fs/nls/nls_cp949.c +++ b/fs/nls/nls_cp949.c @@ -13927,7 +13927,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp949(void) diff --git a/fs/nls/nls_cp950.c b/fs/nls/nls_cp950.c index ef2536829aa5..8e1418708209 100644 --- a/fs/nls/nls_cp950.c +++ b/fs/nls/nls_cp950.c @@ -9463,7 +9463,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_cp950(void) diff --git a/fs/nls/nls_euc-jp.c b/fs/nls/nls_euc-jp.c index 7424929a278b..162b3f160353 100644 --- a/fs/nls/nls_euc-jp.c +++ b/fs/nls/nls_euc-jp.c @@ -553,7 +553,6 @@ static struct nls_table table = { .charset = "euc-jp", .uni2char = uni2char, .char2uni = char2uni, - .owner = THIS_MODULE, }; static int __init init_nls_euc_jp(void) diff --git a/fs/nls/nls_iso8859-1.c b/fs/nls/nls_iso8859-1.c index 7b951bb5849c..69ac020d43b1 100644 --- a/fs/nls/nls_iso8859-1.c +++ b/fs/nls/nls_iso8859-1.c @@ -239,7 +239,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_iso8859_1(void) diff --git a/fs/nls/nls_iso8859-13.c b/fs/nls/nls_iso8859-13.c index c4d52ea9f092..afb3f8f275f0 100644 --- a/fs/nls/nls_iso8859-13.c +++ b/fs/nls/nls_iso8859-13.c @@ -267,7 +267,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_iso8859_13(void) diff --git a/fs/nls/nls_iso8859-14.c b/fs/nls/nls_iso8859-14.c index dc02600c7fe1..046370f0b6f0 100644 --- a/fs/nls/nls_iso8859-14.c +++ b/fs/nls/nls_iso8859-14.c @@ -323,7 +323,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_iso8859_14(void) diff --git a/fs/nls/nls_iso8859-15.c b/fs/nls/nls_iso8859-15.c index 3c7dfc832ef1..7e34a841a056 100644 --- a/fs/nls/nls_iso8859-15.c +++ b/fs/nls/nls_iso8859-15.c @@ -289,7 +289,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_iso8859_15(void) diff --git a/fs/nls/nls_iso8859-2.c b/fs/nls/nls_iso8859-2.c index a2d2197e4c77..7dd571181741 100644 --- a/fs/nls/nls_iso8859-2.c +++ b/fs/nls/nls_iso8859-2.c @@ -290,7 +290,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_iso8859_2(void) diff --git a/fs/nls/nls_iso8859-3.c b/fs/nls/nls_iso8859-3.c index a61e0daa3a86..740b75ec4493 100644 --- a/fs/nls/nls_iso8859-3.c +++ b/fs/nls/nls_iso8859-3.c @@ -290,7 +290,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_iso8859_3(void) diff --git a/fs/nls/nls_iso8859-4.c b/fs/nls/nls_iso8859-4.c index e8ff555483b6..8826021e32f5 100644 --- a/fs/nls/nls_iso8859-4.c +++ b/fs/nls/nls_iso8859-4.c @@ -290,7 +290,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_iso8859_4(void) diff --git a/fs/nls/nls_iso8859-5.c b/fs/nls/nls_iso8859-5.c index 4721e8930124..7c04057a1ad8 100644 --- a/fs/nls/nls_iso8859-5.c +++ b/fs/nls/nls_iso8859-5.c @@ -254,7 +254,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_iso8859_5(void) diff --git a/fs/nls/nls_iso8859-6.c b/fs/nls/nls_iso8859-6.c index 01a517d6d306..d4a881400d74 100644 --- a/fs/nls/nls_iso8859-6.c +++ b/fs/nls/nls_iso8859-6.c @@ -245,7 +245,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_iso8859_6(void) diff --git a/fs/nls/nls_iso8859-7.c b/fs/nls/nls_iso8859-7.c index 2d27b93ef19e..37b75d825a75 100644 --- a/fs/nls/nls_iso8859-7.c +++ b/fs/nls/nls_iso8859-7.c @@ -299,7 +299,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_iso8859_7(void) diff --git a/fs/nls/nls_iso8859-9.c b/fs/nls/nls_iso8859-9.c index 694bf070c721..557b98250d37 100644 --- a/fs/nls/nls_iso8859-9.c +++ b/fs/nls/nls_iso8859-9.c @@ -254,7 +254,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_iso8859_9(void) diff --git a/fs/nls/nls_koi8-r.c b/fs/nls/nls_koi8-r.c index 43875310540d..811f232fccfb 100644 --- a/fs/nls/nls_koi8-r.c +++ b/fs/nls/nls_koi8-r.c @@ -305,7 +305,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_koi8_r(void) diff --git a/fs/nls/nls_koi8-ru.c b/fs/nls/nls_koi8-ru.c index e7bc1d75c78c..a80a741a8676 100644 --- a/fs/nls/nls_koi8-ru.c +++ b/fs/nls/nls_koi8-ru.c @@ -55,7 +55,6 @@ static struct nls_table table = { .charset = "koi8-ru", .uni2char = uni2char, .char2uni = char2uni, - .owner = THIS_MODULE, }; static int __init init_nls_koi8_ru(void) diff --git a/fs/nls/nls_koi8-u.c b/fs/nls/nls_koi8-u.c index 8c9f0292b5ae..7e029e4c188a 100644 --- a/fs/nls/nls_koi8-u.c +++ b/fs/nls/nls_koi8-u.c @@ -312,7 +312,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = charset2lower, .charset2upper = charset2upper, - .owner = THIS_MODULE, }; static int __init init_nls_koi8_u(void) diff --git a/fs/nls/nls_utf8.c b/fs/nls/nls_utf8.c index 0d60a44acacd..afcfbc4a14db 100644 --- a/fs/nls/nls_utf8.c +++ b/fs/nls/nls_utf8.c @@ -46,7 +46,6 @@ static struct nls_table table = { .char2uni = char2uni, .charset2lower = identity, /* no conversion */ .charset2upper = identity, - .owner = THIS_MODULE, }; static int __init init_nls_utf8(void) diff --git a/fs/notify/dnotify/dnotify.c b/fs/notify/dnotify/dnotify.c index 1fedd5f7ccc4..abc8cbcfe90e 100644 --- a/fs/notify/dnotify/dnotify.c +++ b/fs/notify/dnotify/dnotify.c @@ -82,20 +82,23 @@ static void dnotify_recalc_inode_mask(struct fsnotify_mark *fsn_mark) * events. */ static int dnotify_handle_event(struct fsnotify_group *group, + struct inode *inode, struct fsnotify_mark *inode_mark, struct fsnotify_mark *vfsmount_mark, - struct fsnotify_event *event) + u32 mask, void *data, int data_type, + const unsigned char *file_name, u32 cookie) { struct dnotify_mark *dn_mark; - struct inode *to_tell; struct dnotify_struct *dn; struct dnotify_struct **prev; struct fown_struct *fown; - __u32 test_mask = event->mask & ~FS_EVENT_ON_CHILD; + __u32 test_mask = mask & ~FS_EVENT_ON_CHILD; - BUG_ON(vfsmount_mark); + /* not a dir, dnotify doesn't care */ + if (!S_ISDIR(inode->i_mode)) + return 0; - to_tell = event->to_tell; + BUG_ON(vfsmount_mark); dn_mark = container_of(inode_mark, struct dnotify_mark, fsn_mark); @@ -122,23 +125,6 @@ static int dnotify_handle_event(struct fsnotify_group *group, return 0; } -/* - * Given an inode and mask determine if dnotify would be interested in sending - * userspace notification for that pair. - */ -static bool dnotify_should_send_event(struct fsnotify_group *group, - struct inode *inode, - struct fsnotify_mark *inode_mark, - struct fsnotify_mark *vfsmount_mark, - __u32 mask, void *data, int data_type) -{ - /* not a dir, dnotify doesn't care */ - if (!S_ISDIR(inode->i_mode)) - return false; - - return true; -} - static void dnotify_free_mark(struct fsnotify_mark *fsn_mark) { struct dnotify_mark *dn_mark = container_of(fsn_mark, @@ -152,10 +138,6 @@ static void dnotify_free_mark(struct fsnotify_mark *fsn_mark) static struct fsnotify_ops dnotify_fsnotify_ops = { .handle_event = dnotify_handle_event, - .should_send_event = dnotify_should_send_event, - .free_group_priv = NULL, - .freeing_mark = NULL, - .free_event_priv = NULL, }; /* diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c index 0c2f9122b262..ee9cb3795c2b 100644 --- a/fs/notify/fanotify/fanotify.c +++ b/fs/notify/fanotify/fanotify.c @@ -9,91 +9,59 @@ #include <linux/types.h> #include <linux/wait.h> -static bool should_merge(struct fsnotify_event *old, struct fsnotify_event *new) +#include "fanotify.h" + +static bool should_merge(struct fsnotify_event *old_fsn, + struct fsnotify_event *new_fsn) { - pr_debug("%s: old=%p new=%p\n", __func__, old, new); + struct fanotify_event_info *old, *new; - if (old->to_tell == new->to_tell && - old->data_type == new->data_type && - old->tgid == new->tgid) { - switch (old->data_type) { - case (FSNOTIFY_EVENT_PATH): -#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS - /* dont merge two permission events */ - if ((old->mask & FAN_ALL_PERM_EVENTS) && - (new->mask & FAN_ALL_PERM_EVENTS)) - return false; -#endif - if ((old->path.mnt == new->path.mnt) && - (old->path.dentry == new->path.dentry)) - return true; - break; - case (FSNOTIFY_EVENT_NONE): - return true; - default: - BUG(); - }; - } + pr_debug("%s: old=%p new=%p\n", __func__, old_fsn, new_fsn); + old = FANOTIFY_E(old_fsn); + new = FANOTIFY_E(new_fsn); + + if (old_fsn->inode == new_fsn->inode && old->tgid == new->tgid && + old->path.mnt == new->path.mnt && + old->path.dentry == new->path.dentry) + return true; return false; } /* and the list better be locked by something too! */ -static struct fsnotify_event *fanotify_merge(struct list_head *list, - struct fsnotify_event *event) +static int fanotify_merge(struct list_head *list, struct fsnotify_event *event) { - struct fsnotify_event_holder *test_holder; - struct fsnotify_event *test_event = NULL; - struct fsnotify_event *new_event; + struct fsnotify_event *test_event; + bool do_merge = false; pr_debug("%s: list=%p event=%p\n", __func__, list, event); +#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS + /* + * Don't merge a permission event with any other event so that we know + * the event structure we have created in fanotify_handle_event() is the + * one we should check for permission response. + */ + if (event->mask & FAN_ALL_PERM_EVENTS) + return 0; +#endif - list_for_each_entry_reverse(test_holder, list, event_list) { - if (should_merge(test_holder->event, event)) { - test_event = test_holder->event; + list_for_each_entry_reverse(test_event, list, list) { + if (should_merge(test_event, event)) { + do_merge = true; break; } } - if (!test_event) - return NULL; - - fsnotify_get_event(test_event); - - /* if they are exactly the same we are done */ - if (test_event->mask == event->mask) - return test_event; - - /* - * if the refcnt == 2 this is the only queue - * for this event and so we can update the mask - * in place. - */ - if (atomic_read(&test_event->refcnt) == 2) { - test_event->mask |= event->mask; - return test_event; - } - - new_event = fsnotify_clone_event(test_event); - - /* done with test_event */ - fsnotify_put_event(test_event); - - /* couldn't allocate memory, merge was not possible */ - if (unlikely(!new_event)) - return ERR_PTR(-ENOMEM); - - /* build new event and replace it on the list */ - new_event->mask = (test_event->mask | event->mask); - fsnotify_replace_event(test_holder, new_event); + if (!do_merge) + return 0; - /* we hold a reference on new_event from clone_event */ - return new_event; + test_event->mask |= event->mask; + return 1; } #ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS -static int fanotify_get_response_from_access(struct fsnotify_group *group, - struct fsnotify_event *event) +static int fanotify_get_response(struct fsnotify_group *group, + struct fanotify_perm_event_info *event) { int ret; @@ -106,7 +74,6 @@ static int fanotify_get_response_from_access(struct fsnotify_group *group, return 0; /* userspace responded, convert to something usable */ - spin_lock(&event->lock); switch (event->response) { case FAN_ALLOW: ret = 0; @@ -116,7 +83,6 @@ static int fanotify_get_response_from_access(struct fsnotify_group *group, ret = -EPERM; } event->response = 0; - spin_unlock(&event->lock); pr_debug("%s: group=%p event=%p about to return ret=%d\n", __func__, group, event, ret); @@ -125,58 +91,17 @@ static int fanotify_get_response_from_access(struct fsnotify_group *group, } #endif -static int fanotify_handle_event(struct fsnotify_group *group, - struct fsnotify_mark *inode_mark, - struct fsnotify_mark *fanotify_mark, - struct fsnotify_event *event) -{ - int ret = 0; - struct fsnotify_event *notify_event = NULL; - - BUILD_BUG_ON(FAN_ACCESS != FS_ACCESS); - BUILD_BUG_ON(FAN_MODIFY != FS_MODIFY); - BUILD_BUG_ON(FAN_CLOSE_NOWRITE != FS_CLOSE_NOWRITE); - BUILD_BUG_ON(FAN_CLOSE_WRITE != FS_CLOSE_WRITE); - BUILD_BUG_ON(FAN_OPEN != FS_OPEN); - BUILD_BUG_ON(FAN_EVENT_ON_CHILD != FS_EVENT_ON_CHILD); - BUILD_BUG_ON(FAN_Q_OVERFLOW != FS_Q_OVERFLOW); - BUILD_BUG_ON(FAN_OPEN_PERM != FS_OPEN_PERM); - BUILD_BUG_ON(FAN_ACCESS_PERM != FS_ACCESS_PERM); - BUILD_BUG_ON(FAN_ONDIR != FS_ISDIR); - - pr_debug("%s: group=%p event=%p\n", __func__, group, event); - - notify_event = fsnotify_add_notify_event(group, event, NULL, fanotify_merge); - if (IS_ERR(notify_event)) - return PTR_ERR(notify_event); - -#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS - if (event->mask & FAN_ALL_PERM_EVENTS) { - /* if we merged we need to wait on the new event */ - if (notify_event) - event = notify_event; - ret = fanotify_get_response_from_access(group, event); - } -#endif - - if (notify_event) - fsnotify_put_event(notify_event); - - return ret; -} - -static bool fanotify_should_send_event(struct fsnotify_group *group, - struct inode *to_tell, - struct fsnotify_mark *inode_mark, +static bool fanotify_should_send_event(struct fsnotify_mark *inode_mark, struct fsnotify_mark *vfsmnt_mark, - __u32 event_mask, void *data, int data_type) + u32 event_mask, + void *data, int data_type) { __u32 marks_mask, marks_ignored_mask; struct path *path = data; - pr_debug("%s: group=%p to_tell=%p inode_mark=%p vfsmnt_mark=%p " - "mask=%x data=%p data_type=%d\n", __func__, group, to_tell, - inode_mark, vfsmnt_mark, event_mask, data, data_type); + pr_debug("%s: inode_mark=%p vfsmnt_mark=%p mask=%x data=%p" + " data_type=%d\n", __func__, inode_mark, vfsmnt_mark, + event_mask, data, data_type); /* if we don't have enough info to send an event to userspace say no */ if (data_type != FSNOTIFY_EVENT_PATH) @@ -217,6 +142,93 @@ static bool fanotify_should_send_event(struct fsnotify_group *group, return false; } +struct fanotify_event_info *fanotify_alloc_event(struct inode *inode, u32 mask, + struct path *path) +{ + struct fanotify_event_info *event; + +#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS + if (mask & FAN_ALL_PERM_EVENTS) { + struct fanotify_perm_event_info *pevent; + + pevent = kmem_cache_alloc(fanotify_perm_event_cachep, + GFP_KERNEL); + if (!pevent) + return NULL; + event = &pevent->fae; + pevent->response = 0; + goto init; + } +#endif + event = kmem_cache_alloc(fanotify_event_cachep, GFP_KERNEL); + if (!event) + return NULL; +init: __maybe_unused + fsnotify_init_event(&event->fse, inode, mask); + event->tgid = get_pid(task_tgid(current)); + if (path) { + event->path = *path; + path_get(&event->path); + } else { + event->path.mnt = NULL; + event->path.dentry = NULL; + } + return event; +} + +static int fanotify_handle_event(struct fsnotify_group *group, + struct inode *inode, + struct fsnotify_mark *inode_mark, + struct fsnotify_mark *fanotify_mark, + u32 mask, void *data, int data_type, + const unsigned char *file_name, u32 cookie) +{ + int ret = 0; + struct fanotify_event_info *event; + struct fsnotify_event *fsn_event; + + BUILD_BUG_ON(FAN_ACCESS != FS_ACCESS); + BUILD_BUG_ON(FAN_MODIFY != FS_MODIFY); + BUILD_BUG_ON(FAN_CLOSE_NOWRITE != FS_CLOSE_NOWRITE); + BUILD_BUG_ON(FAN_CLOSE_WRITE != FS_CLOSE_WRITE); + BUILD_BUG_ON(FAN_OPEN != FS_OPEN); + BUILD_BUG_ON(FAN_EVENT_ON_CHILD != FS_EVENT_ON_CHILD); + BUILD_BUG_ON(FAN_Q_OVERFLOW != FS_Q_OVERFLOW); + BUILD_BUG_ON(FAN_OPEN_PERM != FS_OPEN_PERM); + BUILD_BUG_ON(FAN_ACCESS_PERM != FS_ACCESS_PERM); + BUILD_BUG_ON(FAN_ONDIR != FS_ISDIR); + + if (!fanotify_should_send_event(inode_mark, fanotify_mark, mask, data, + data_type)) + return 0; + + pr_debug("%s: group=%p inode=%p mask=%x\n", __func__, group, inode, + mask); + + event = fanotify_alloc_event(inode, mask, data); + if (unlikely(!event)) + return -ENOMEM; + + fsn_event = &event->fse; + ret = fsnotify_add_notify_event(group, fsn_event, fanotify_merge); + if (ret) { + /* Permission events shouldn't be merged */ + BUG_ON(ret == 1 && mask & FAN_ALL_PERM_EVENTS); + /* Our event wasn't used in the end. Free it. */ + fsnotify_destroy_event(group, fsn_event); + + return 0; + } + +#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS + if (mask & FAN_ALL_PERM_EVENTS) { + ret = fanotify_get_response(group, FANOTIFY_PE(fsn_event)); + fsnotify_destroy_event(group, fsn_event); + } +#endif + return ret; +} + static void fanotify_free_group_priv(struct fsnotify_group *group) { struct user_struct *user; @@ -226,10 +238,25 @@ static void fanotify_free_group_priv(struct fsnotify_group *group) free_uid(user); } +static void fanotify_free_event(struct fsnotify_event *fsn_event) +{ + struct fanotify_event_info *event; + + event = FANOTIFY_E(fsn_event); + path_put(&event->path); + put_pid(event->tgid); +#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS + if (fsn_event->mask & FAN_ALL_PERM_EVENTS) { + kmem_cache_free(fanotify_perm_event_cachep, + FANOTIFY_PE(fsn_event)); + return; + } +#endif + kmem_cache_free(fanotify_event_cachep, event); +} + const struct fsnotify_ops fanotify_fsnotify_ops = { .handle_event = fanotify_handle_event, - .should_send_event = fanotify_should_send_event, .free_group_priv = fanotify_free_group_priv, - .free_event_priv = NULL, - .freeing_mark = NULL, + .free_event = fanotify_free_event, }; diff --git a/fs/notify/fanotify/fanotify.h b/fs/notify/fanotify/fanotify.h new file mode 100644 index 000000000000..2a5fb14115df --- /dev/null +++ b/fs/notify/fanotify/fanotify.h @@ -0,0 +1,50 @@ +#include <linux/fsnotify_backend.h> +#include <linux/path.h> +#include <linux/slab.h> + +extern struct kmem_cache *fanotify_event_cachep; +extern struct kmem_cache *fanotify_perm_event_cachep; + +/* + * Structure for normal fanotify events. It gets allocated in + * fanotify_handle_event() and freed when the information is retrieved by + * userspace + */ +struct fanotify_event_info { + struct fsnotify_event fse; + /* + * We hold ref to this path so it may be dereferenced at any point + * during this object's lifetime + */ + struct path path; + struct pid *tgid; +}; + +#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS +/* + * Structure for permission fanotify events. It gets allocated and freed in + * fanotify_handle_event() since we wait there for user response. When the + * information is retrieved by userspace the structure is moved from + * group->notification_list to group->fanotify_data.access_list to wait for + * user response. + */ +struct fanotify_perm_event_info { + struct fanotify_event_info fae; + int response; /* userspace answer to question */ + int fd; /* fd we passed to userspace for this event */ +}; + +static inline struct fanotify_perm_event_info * +FANOTIFY_PE(struct fsnotify_event *fse) +{ + return container_of(fse, struct fanotify_perm_event_info, fae.fse); +} +#endif + +static inline struct fanotify_event_info *FANOTIFY_E(struct fsnotify_event *fse) +{ + return container_of(fse, struct fanotify_event_info, fse); +} + +struct fanotify_event_info *fanotify_alloc_event(struct inode *inode, u32 mask, + struct path *path); diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c index e44cb6427df3..4e565c814309 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -19,6 +19,7 @@ #include "../../mount.h" #include "../fdinfo.h" +#include "fanotify.h" #define FANOTIFY_DEFAULT_MAX_EVENTS 16384 #define FANOTIFY_DEFAULT_MAX_MARKS 8192 @@ -27,13 +28,8 @@ extern const struct fsnotify_ops fanotify_fsnotify_ops; static struct kmem_cache *fanotify_mark_cache __read_mostly; -static struct kmem_cache *fanotify_response_event_cache __read_mostly; - -struct fanotify_response_event { - struct list_head list; - __s32 fd; - struct fsnotify_event *event; -}; +struct kmem_cache *fanotify_event_cachep __read_mostly; +struct kmem_cache *fanotify_perm_event_cachep __read_mostly; /* * Get an fsnotify notification event if one exists and is small @@ -61,8 +57,8 @@ static struct fsnotify_event *get_one_event(struct fsnotify_group *group, } static int create_fd(struct fsnotify_group *group, - struct fsnotify_event *event, - struct file **file) + struct fanotify_event_info *event, + struct file **file) { int client_fd; struct file *new_file; @@ -73,12 +69,6 @@ static int create_fd(struct fsnotify_group *group, if (client_fd < 0) return client_fd; - if (event->data_type != FSNOTIFY_EVENT_PATH) { - WARN_ON(1); - put_unused_fd(client_fd); - return -EINVAL; - } - /* * we need a new file handle for the userspace program so it can read even if it was * originally opened O_WRONLY. @@ -109,23 +99,25 @@ static int create_fd(struct fsnotify_group *group, } static int fill_event_metadata(struct fsnotify_group *group, - struct fanotify_event_metadata *metadata, - struct fsnotify_event *event, - struct file **file) + struct fanotify_event_metadata *metadata, + struct fsnotify_event *fsn_event, + struct file **file) { int ret = 0; + struct fanotify_event_info *event; pr_debug("%s: group=%p metadata=%p event=%p\n", __func__, - group, metadata, event); + group, metadata, fsn_event); *file = NULL; + event = container_of(fsn_event, struct fanotify_event_info, fse); metadata->event_len = FAN_EVENT_METADATA_LEN; metadata->metadata_len = FAN_EVENT_METADATA_LEN; metadata->vers = FANOTIFY_METADATA_VERSION; metadata->reserved = 0; - metadata->mask = event->mask & FAN_ALL_OUTGOING_EVENTS; + metadata->mask = fsn_event->mask & FAN_ALL_OUTGOING_EVENTS; metadata->pid = pid_vnr(event->tgid); - if (unlikely(event->mask & FAN_Q_OVERFLOW)) + if (unlikely(fsn_event->mask & FAN_Q_OVERFLOW)) metadata->fd = FAN_NOFD; else { metadata->fd = create_fd(group, event, file); @@ -137,33 +129,34 @@ static int fill_event_metadata(struct fsnotify_group *group, } #ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS -static struct fanotify_response_event *dequeue_re(struct fsnotify_group *group, - __s32 fd) +static struct fanotify_perm_event_info *dequeue_event( + struct fsnotify_group *group, int fd) { - struct fanotify_response_event *re, *return_re = NULL; + struct fanotify_perm_event_info *event, *return_e = NULL; - mutex_lock(&group->fanotify_data.access_mutex); - list_for_each_entry(re, &group->fanotify_data.access_list, list) { - if (re->fd != fd) + spin_lock(&group->fanotify_data.access_lock); + list_for_each_entry(event, &group->fanotify_data.access_list, + fae.fse.list) { + if (event->fd != fd) continue; - list_del_init(&re->list); - return_re = re; + list_del_init(&event->fae.fse.list); + return_e = event; break; } - mutex_unlock(&group->fanotify_data.access_mutex); + spin_unlock(&group->fanotify_data.access_lock); - pr_debug("%s: found return_re=%p\n", __func__, return_re); + pr_debug("%s: found return_re=%p\n", __func__, return_e); - return return_re; + return return_e; } static int process_access_response(struct fsnotify_group *group, struct fanotify_response *response_struct) { - struct fanotify_response_event *re; - __s32 fd = response_struct->fd; - __u32 response = response_struct->response; + struct fanotify_perm_event_info *event; + int fd = response_struct->fd; + int response = response_struct->response; pr_debug("%s: group=%p fd=%d response=%d\n", __func__, group, fd, response); @@ -183,58 +176,15 @@ static int process_access_response(struct fsnotify_group *group, if (fd < 0) return -EINVAL; - re = dequeue_re(group, fd); - if (!re) + event = dequeue_event(group, fd); + if (!event) return -ENOENT; - re->event->response = response; - + event->response = response; wake_up(&group->fanotify_data.access_waitq); - kmem_cache_free(fanotify_response_event_cache, re); - - return 0; -} - -static int prepare_for_access_response(struct fsnotify_group *group, - struct fsnotify_event *event, - __s32 fd) -{ - struct fanotify_response_event *re; - - if (!(event->mask & FAN_ALL_PERM_EVENTS)) - return 0; - - re = kmem_cache_alloc(fanotify_response_event_cache, GFP_KERNEL); - if (!re) - return -ENOMEM; - - re->event = event; - re->fd = fd; - - mutex_lock(&group->fanotify_data.access_mutex); - - if (atomic_read(&group->fanotify_data.bypass_perm)) { - mutex_unlock(&group->fanotify_data.access_mutex); - kmem_cache_free(fanotify_response_event_cache, re); - event->response = FAN_ALLOW; - return 0; - } - - list_add_tail(&re->list, &group->fanotify_data.access_list); - mutex_unlock(&group->fanotify_data.access_mutex); - return 0; } - -#else -static int prepare_for_access_response(struct fsnotify_group *group, - struct fsnotify_event *event, - __s32 fd) -{ - return 0; -} - #endif static ssize_t copy_event_to_user(struct fsnotify_group *group, @@ -249,7 +199,7 @@ static ssize_t copy_event_to_user(struct fsnotify_group *group, ret = fill_event_metadata(group, &fanotify_event_metadata, event, &f); if (ret < 0) - goto out; + return ret; fd = fanotify_event_metadata.fd; ret = -EFAULT; @@ -257,9 +207,10 @@ static ssize_t copy_event_to_user(struct fsnotify_group *group, fanotify_event_metadata.event_len)) goto out_close_fd; - ret = prepare_for_access_response(group, event, fd); - if (ret) - goto out_close_fd; +#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS + if (event->mask & FAN_ALL_PERM_EVENTS) + FANOTIFY_PE(event)->fd = fd; +#endif if (fd != FAN_NOFD) fd_install(fd, f); @@ -270,13 +221,6 @@ out_close_fd: put_unused_fd(fd); fput(f); } -out: -#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS - if (event->mask & FAN_ALL_PERM_EVENTS) { - event->response = FAN_DENY; - wake_up(&group->fanotify_data.access_waitq); - } -#endif return ret; } @@ -316,30 +260,50 @@ static ssize_t fanotify_read(struct file *file, char __user *buf, kevent = get_one_event(group, count); mutex_unlock(&group->notification_mutex); - if (kevent) { + if (IS_ERR(kevent)) { ret = PTR_ERR(kevent); - if (IS_ERR(kevent)) + break; + } + + if (!kevent) { + ret = -EAGAIN; + if (file->f_flags & O_NONBLOCK) break; - ret = copy_event_to_user(group, kevent, buf); - fsnotify_put_event(kevent); - if (ret < 0) + + ret = -ERESTARTSYS; + if (signal_pending(current)) + break; + + if (start != buf) break; - buf += ret; - count -= ret; + schedule(); continue; } - ret = -EAGAIN; - if (file->f_flags & O_NONBLOCK) - break; - ret = -ERESTARTSYS; - if (signal_pending(current)) - break; - - if (start != buf) - break; - - schedule(); + ret = copy_event_to_user(group, kevent, buf); + /* + * Permission events get queued to wait for response. Other + * events can be destroyed now. + */ + if (!(kevent->mask & FAN_ALL_PERM_EVENTS)) { + fsnotify_destroy_event(group, kevent); + if (ret < 0) + break; + } else { +#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS + if (ret < 0) { + FANOTIFY_PE(kevent)->response = FAN_DENY; + wake_up(&group->fanotify_data.access_waitq); + break; + } + spin_lock(&group->fanotify_data.access_lock); + list_add_tail(&kevent->list, + &group->fanotify_data.access_list); + spin_unlock(&group->fanotify_data.access_lock); +#endif + } + buf += ret; + count -= ret; } finish_wait(&group->notification_waitq, &wait); @@ -380,22 +344,21 @@ static int fanotify_release(struct inode *ignored, struct file *file) struct fsnotify_group *group = file->private_data; #ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS - struct fanotify_response_event *re, *lre; + struct fanotify_perm_event_info *event, *next; - mutex_lock(&group->fanotify_data.access_mutex); + spin_lock(&group->fanotify_data.access_lock); atomic_inc(&group->fanotify_data.bypass_perm); - list_for_each_entry_safe(re, lre, &group->fanotify_data.access_list, list) { - pr_debug("%s: found group=%p re=%p event=%p\n", __func__, group, - re, re->event); - - list_del_init(&re->list); - re->event->response = FAN_ALLOW; + list_for_each_entry_safe(event, next, &group->fanotify_data.access_list, + fae.fse.list) { + pr_debug("%s: found group=%p event=%p\n", __func__, group, + event); - kmem_cache_free(fanotify_response_event_cache, re); + list_del_init(&event->fae.fse.list); + event->response = FAN_ALLOW; } - mutex_unlock(&group->fanotify_data.access_mutex); + spin_unlock(&group->fanotify_data.access_lock); wake_up(&group->fanotify_data.access_waitq); #endif @@ -409,7 +372,7 @@ static int fanotify_release(struct inode *ignored, struct file *file) static long fanotify_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct fsnotify_group *group; - struct fsnotify_event_holder *holder; + struct fsnotify_event *fsn_event; void __user *p; int ret = -ENOTTY; size_t send_len = 0; @@ -421,7 +384,7 @@ static long fanotify_ioctl(struct file *file, unsigned int cmd, unsigned long ar switch (cmd) { case FIONREAD: mutex_lock(&group->notification_mutex); - list_for_each_entry(holder, &group->notification_list, event_list) + list_for_each_entry(fsn_event, &group->notification_list, list) send_len += FAN_EVENT_METADATA_LEN; mutex_unlock(&group->notification_mutex); ret = put_user(send_len, (int __user *) p); @@ -695,6 +658,7 @@ SYSCALL_DEFINE2(fanotify_init, unsigned int, flags, unsigned int, event_f_flags) struct fsnotify_group *group; int f_flags, fd; struct user_struct *user; + struct fanotify_event_info *oevent; pr_debug("%s: flags=%d event_f_flags=%d\n", __func__, flags, event_f_flags); @@ -727,9 +691,16 @@ SYSCALL_DEFINE2(fanotify_init, unsigned int, flags, unsigned int, event_f_flags) group->fanotify_data.user = user; atomic_inc(&user->fanotify_listeners); + oevent = fanotify_alloc_event(NULL, FS_Q_OVERFLOW, NULL); + if (unlikely(!oevent)) { + fd = -ENOMEM; + goto out_destroy_group; + } + group->overflow_event = &oevent->fse; + group->fanotify_data.f_flags = event_f_flags; #ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS - mutex_init(&group->fanotify_data.access_mutex); + spin_lock_init(&group->fanotify_data.access_lock); init_waitqueue_head(&group->fanotify_data.access_waitq); INIT_LIST_HEAD(&group->fanotify_data.access_list); atomic_set(&group->fanotify_data.bypass_perm, 0); @@ -888,9 +859,9 @@ COMPAT_SYSCALL_DEFINE6(fanotify_mark, { return sys_fanotify_mark(fanotify_fd, flags, #ifdef __BIG_ENDIAN - ((__u64)mask1 << 32) | mask0, -#else ((__u64)mask0 << 32) | mask1, +#else + ((__u64)mask1 << 32) | mask0, #endif dfd, pathname); } @@ -904,8 +875,11 @@ COMPAT_SYSCALL_DEFINE6(fanotify_mark, static int __init fanotify_user_setup(void) { fanotify_mark_cache = KMEM_CACHE(fsnotify_mark, SLAB_PANIC); - fanotify_response_event_cache = KMEM_CACHE(fanotify_response_event, - SLAB_PANIC); + fanotify_event_cachep = KMEM_CACHE(fanotify_event_info, SLAB_PANIC); +#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS + fanotify_perm_event_cachep = KMEM_CACHE(fanotify_perm_event_info, + SLAB_PANIC); +#endif return 0; } diff --git a/fs/notify/fsnotify.c b/fs/notify/fsnotify.c index 4bb21d67d9b1..9d3e9c50066a 100644 --- a/fs/notify/fsnotify.c +++ b/fs/notify/fsnotify.c @@ -128,8 +128,7 @@ static int send_to_group(struct inode *to_tell, struct fsnotify_mark *vfsmount_mark, __u32 mask, void *data, int data_is, u32 cookie, - const unsigned char *file_name, - struct fsnotify_event **event) + const unsigned char *file_name) { struct fsnotify_group *group = NULL; __u32 inode_test_mask = 0; @@ -170,27 +169,17 @@ static int send_to_group(struct inode *to_tell, pr_debug("%s: group=%p to_tell=%p mask=%x inode_mark=%p" " inode_test_mask=%x vfsmount_mark=%p vfsmount_test_mask=%x" - " data=%p data_is=%d cookie=%d event=%p\n", + " data=%p data_is=%d cookie=%d\n", __func__, group, to_tell, mask, inode_mark, inode_test_mask, vfsmount_mark, vfsmount_test_mask, data, - data_is, cookie, *event); + data_is, cookie); if (!inode_test_mask && !vfsmount_test_mask) return 0; - if (group->ops->should_send_event(group, to_tell, inode_mark, - vfsmount_mark, mask, data, - data_is) == false) - return 0; - - if (!*event) { - *event = fsnotify_create_event(to_tell, mask, data, - data_is, file_name, - cookie, GFP_KERNEL); - if (!*event) - return -ENOMEM; - } - return group->ops->handle_event(group, inode_mark, vfsmount_mark, *event); + return group->ops->handle_event(group, to_tell, inode_mark, + vfsmount_mark, mask, data, data_is, + file_name, cookie); } /* @@ -205,7 +194,6 @@ int fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is, struct hlist_node *inode_node = NULL, *vfsmount_node = NULL; struct fsnotify_mark *inode_mark = NULL, *vfsmount_mark = NULL; struct fsnotify_group *inode_group, *vfsmount_group; - struct fsnotify_event *event = NULL; struct mount *mnt; int idx, ret = 0; /* global tests shouldn't care about events on child only the specific event */ @@ -258,18 +246,18 @@ int fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is, if (inode_group > vfsmount_group) { /* handle inode */ - ret = send_to_group(to_tell, inode_mark, NULL, mask, data, - data_is, cookie, file_name, &event); + ret = send_to_group(to_tell, inode_mark, NULL, mask, + data, data_is, cookie, file_name); /* we didn't use the vfsmount_mark */ vfsmount_group = NULL; } else if (vfsmount_group > inode_group) { - ret = send_to_group(to_tell, NULL, vfsmount_mark, mask, data, - data_is, cookie, file_name, &event); + ret = send_to_group(to_tell, NULL, vfsmount_mark, mask, + data, data_is, cookie, file_name); inode_group = NULL; } else { ret = send_to_group(to_tell, inode_mark, vfsmount_mark, - mask, data, data_is, cookie, file_name, - &event); + mask, data, data_is, cookie, + file_name); } if (ret && (mask & ALL_FSNOTIFY_PERM_EVENTS)) @@ -285,12 +273,6 @@ int fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is, ret = 0; out: srcu_read_unlock(&fsnotify_mark_srcu, idx); - /* - * fsnotify_create_event() took a reference so the event can't be cleaned - * up while we are still trying to add it to lists, drop that one. - */ - if (event) - fsnotify_put_event(event); return ret; } diff --git a/fs/notify/group.c b/fs/notify/group.c index bd2625bd88b4..ad1995980456 100644 --- a/fs/notify/group.c +++ b/fs/notify/group.c @@ -55,6 +55,13 @@ void fsnotify_destroy_group(struct fsnotify_group *group) /* clear the notification queue of all events */ fsnotify_flush_notify(group); + /* + * Destroy overflow event (we cannot use fsnotify_destroy_event() as + * that deliberately ignores overflow events. + */ + if (group->overflow_event) + group->ops->free_event(group->overflow_event); + fsnotify_put_group(group); } diff --git a/fs/notify/inotify/inotify.h b/fs/notify/inotify/inotify.h index b6642e4de4bf..ed855ef6f077 100644 --- a/fs/notify/inotify/inotify.h +++ b/fs/notify/inotify/inotify.h @@ -2,11 +2,12 @@ #include <linux/inotify.h> #include <linux/slab.h> /* struct kmem_cache */ -extern struct kmem_cache *event_priv_cachep; - -struct inotify_event_private_data { - struct fsnotify_event_private_data fsnotify_event_priv_data; +struct inotify_event_info { + struct fsnotify_event fse; int wd; + u32 sync_cookie; + int name_len; + char name[]; }; struct inotify_inode_mark { @@ -14,8 +15,18 @@ struct inotify_inode_mark { int wd; }; +static inline struct inotify_event_info *INOTIFY_E(struct fsnotify_event *fse) +{ + return container_of(fse, struct inotify_event_info, fse); +} + extern void inotify_ignored_and_remove_idr(struct fsnotify_mark *fsn_mark, struct fsnotify_group *group); -extern void inotify_free_event_priv(struct fsnotify_event_private_data *event_priv); +extern int inotify_handle_event(struct fsnotify_group *group, + struct inode *inode, + struct fsnotify_mark *inode_mark, + struct fsnotify_mark *vfsmount_mark, + u32 mask, void *data, int data_type, + const unsigned char *file_name, u32 cookie); extern const struct fsnotify_ops inotify_fsnotify_ops; diff --git a/fs/notify/inotify/inotify_fsnotify.c b/fs/notify/inotify/inotify_fsnotify.c index 4216308b81b4..43ab1e1a07a2 100644 --- a/fs/notify/inotify/inotify_fsnotify.c +++ b/fs/notify/inotify/inotify_fsnotify.c @@ -34,107 +34,90 @@ #include "inotify.h" /* - * Check if 2 events contain the same information. We do not compare private data - * but at this moment that isn't a problem for any know fsnotify listeners. + * Check if 2 events contain the same information. */ -static bool event_compare(struct fsnotify_event *old, struct fsnotify_event *new) +static bool event_compare(struct fsnotify_event *old_fsn, + struct fsnotify_event *new_fsn) { - if ((old->mask == new->mask) && - (old->to_tell == new->to_tell) && - (old->data_type == new->data_type) && - (old->name_len == new->name_len)) { - switch (old->data_type) { - case (FSNOTIFY_EVENT_INODE): - /* remember, after old was put on the wait_q we aren't - * allowed to look at the inode any more, only thing - * left to check was if the file_name is the same */ - if (!old->name_len || - !strcmp(old->file_name, new->file_name)) - return true; - break; - case (FSNOTIFY_EVENT_PATH): - if ((old->path.mnt == new->path.mnt) && - (old->path.dentry == new->path.dentry)) - return true; - break; - case (FSNOTIFY_EVENT_NONE): - if (old->mask & FS_Q_OVERFLOW) - return true; - else if (old->mask & FS_IN_IGNORED) - return false; - return true; - }; - } + struct inotify_event_info *old, *new; + + if (old_fsn->mask & FS_IN_IGNORED) + return false; + old = INOTIFY_E(old_fsn); + new = INOTIFY_E(new_fsn); + if ((old_fsn->mask == new_fsn->mask) && + (old_fsn->inode == new_fsn->inode) && + (old->name_len == new->name_len) && + (!old->name_len || !strcmp(old->name, new->name))) + return true; return false; } -static struct fsnotify_event *inotify_merge(struct list_head *list, - struct fsnotify_event *event) +static int inotify_merge(struct list_head *list, + struct fsnotify_event *event) { - struct fsnotify_event_holder *last_holder; struct fsnotify_event *last_event; - /* and the list better be locked by something too */ - spin_lock(&event->lock); - - last_holder = list_entry(list->prev, struct fsnotify_event_holder, event_list); - last_event = last_holder->event; - if (event_compare(last_event, event)) - fsnotify_get_event(last_event); - else - last_event = NULL; - - spin_unlock(&event->lock); - - return last_event; + last_event = list_entry(list->prev, struct fsnotify_event, list); + return event_compare(last_event, event); } -static int inotify_handle_event(struct fsnotify_group *group, - struct fsnotify_mark *inode_mark, - struct fsnotify_mark *vfsmount_mark, - struct fsnotify_event *event) +int inotify_handle_event(struct fsnotify_group *group, + struct inode *inode, + struct fsnotify_mark *inode_mark, + struct fsnotify_mark *vfsmount_mark, + u32 mask, void *data, int data_type, + const unsigned char *file_name, u32 cookie) { struct inotify_inode_mark *i_mark; - struct inode *to_tell; - struct inotify_event_private_data *event_priv; - struct fsnotify_event_private_data *fsn_event_priv; - struct fsnotify_event *added_event; - int wd, ret = 0; + struct inotify_event_info *event; + struct fsnotify_event *fsn_event; + int ret; + int len = 0; + int alloc_len = sizeof(struct inotify_event_info); BUG_ON(vfsmount_mark); - pr_debug("%s: group=%p event=%p to_tell=%p mask=%x\n", __func__, group, - event, event->to_tell, event->mask); + if ((inode_mark->mask & FS_EXCL_UNLINK) && + (data_type == FSNOTIFY_EVENT_PATH)) { + struct path *path = data; + + if (d_unlinked(path->dentry)) + return 0; + } + if (file_name) { + len = strlen(file_name); + alloc_len += len + 1; + } - to_tell = event->to_tell; + pr_debug("%s: group=%p inode=%p mask=%x\n", __func__, group, inode, + mask); i_mark = container_of(inode_mark, struct inotify_inode_mark, fsn_mark); - wd = i_mark->wd; - event_priv = kmem_cache_alloc(event_priv_cachep, GFP_KERNEL); - if (unlikely(!event_priv)) + event = kmalloc(alloc_len, GFP_KERNEL); + if (unlikely(!event)) return -ENOMEM; - fsn_event_priv = &event_priv->fsnotify_event_priv_data; - - fsnotify_get_group(group); - fsn_event_priv->group = group; - event_priv->wd = wd; - - added_event = fsnotify_add_notify_event(group, event, fsn_event_priv, inotify_merge); - if (added_event) { - inotify_free_event_priv(fsn_event_priv); - if (!IS_ERR(added_event)) - fsnotify_put_event(added_event); - else - ret = PTR_ERR(added_event); + fsn_event = &event->fse; + fsnotify_init_event(fsn_event, inode, mask); + event->wd = i_mark->wd; + event->sync_cookie = cookie; + event->name_len = len; + if (len) + strcpy(event->name, file_name); + + ret = fsnotify_add_notify_event(group, fsn_event, inotify_merge); + if (ret) { + /* Our event wasn't used in the end. Free it. */ + fsnotify_destroy_event(group, fsn_event); } if (inode_mark->mask & IN_ONESHOT) fsnotify_destroy_mark(inode_mark, group); - return ret; + return 0; } static void inotify_freeing_mark(struct fsnotify_mark *fsn_mark, struct fsnotify_group *group) @@ -142,22 +125,6 @@ static void inotify_freeing_mark(struct fsnotify_mark *fsn_mark, struct fsnotify inotify_ignored_and_remove_idr(fsn_mark, group); } -static bool inotify_should_send_event(struct fsnotify_group *group, struct inode *inode, - struct fsnotify_mark *inode_mark, - struct fsnotify_mark *vfsmount_mark, - __u32 mask, void *data, int data_type) -{ - if ((inode_mark->mask & FS_EXCL_UNLINK) && - (data_type == FSNOTIFY_EVENT_PATH)) { - struct path *path = data; - - if (d_unlinked(path->dentry)) - return false; - } - - return true; -} - /* * This is NEVER supposed to be called. Inotify marks should either have been * removed from the idr when the watch was removed or in the @@ -202,22 +169,14 @@ static void inotify_free_group_priv(struct fsnotify_group *group) free_uid(group->inotify_data.user); } -void inotify_free_event_priv(struct fsnotify_event_private_data *fsn_event_priv) +static void inotify_free_event(struct fsnotify_event *fsn_event) { - struct inotify_event_private_data *event_priv; - - - event_priv = container_of(fsn_event_priv, struct inotify_event_private_data, - fsnotify_event_priv_data); - - fsnotify_put_group(fsn_event_priv->group); - kmem_cache_free(event_priv_cachep, event_priv); + kfree(INOTIFY_E(fsn_event)); } const struct fsnotify_ops inotify_fsnotify_ops = { .handle_event = inotify_handle_event, - .should_send_event = inotify_should_send_event, .free_group_priv = inotify_free_group_priv, - .free_event_priv = inotify_free_event_priv, + .free_event = inotify_free_event, .freeing_mark = inotify_freeing_mark, }; diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c index 60f954a891ab..78a2ca3966c3 100644 --- a/fs/notify/inotify/inotify_user.c +++ b/fs/notify/inotify/inotify_user.c @@ -50,7 +50,6 @@ static int inotify_max_queued_events __read_mostly; static int inotify_max_user_watches __read_mostly; static struct kmem_cache *inotify_inode_mark_cachep __read_mostly; -struct kmem_cache *event_priv_cachep __read_mostly; #ifdef CONFIG_SYSCTL @@ -124,6 +123,16 @@ static unsigned int inotify_poll(struct file *file, poll_table *wait) return ret; } +static int round_event_name_len(struct fsnotify_event *fsn_event) +{ + struct inotify_event_info *event; + + event = INOTIFY_E(fsn_event); + if (!event->name_len) + return 0; + return roundup(event->name_len + 1, sizeof(struct inotify_event)); +} + /* * Get an inotify_kernel_event if one exists and is small * enough to fit in "count". Return an error pointer if @@ -144,9 +153,7 @@ static struct fsnotify_event *get_one_event(struct fsnotify_group *group, pr_debug("%s: group=%p event=%p\n", __func__, group, event); - if (event->name_len) - event_size += roundup(event->name_len + 1, event_size); - + event_size += round_event_name_len(event); if (event_size > count) return ERR_PTR(-EINVAL); @@ -164,40 +171,27 @@ static struct fsnotify_event *get_one_event(struct fsnotify_group *group, * buffer we had in "get_one_event()" above. */ static ssize_t copy_event_to_user(struct fsnotify_group *group, - struct fsnotify_event *event, + struct fsnotify_event *fsn_event, char __user *buf) { struct inotify_event inotify_event; - struct fsnotify_event_private_data *fsn_priv; - struct inotify_event_private_data *priv; + struct inotify_event_info *event; size_t event_size = sizeof(struct inotify_event); - size_t name_len = 0; + size_t name_len; + size_t pad_name_len; - pr_debug("%s: group=%p event=%p\n", __func__, group, event); - - /* we get the inotify watch descriptor from the event private data */ - spin_lock(&event->lock); - fsn_priv = fsnotify_remove_priv_from_event(group, event); - spin_unlock(&event->lock); - - if (!fsn_priv) - inotify_event.wd = -1; - else { - priv = container_of(fsn_priv, struct inotify_event_private_data, - fsnotify_event_priv_data); - inotify_event.wd = priv->wd; - inotify_free_event_priv(fsn_priv); - } + pr_debug("%s: group=%p event=%p\n", __func__, group, fsn_event); + event = INOTIFY_E(fsn_event); + name_len = event->name_len; /* - * round up event->name_len so it is a multiple of event_size + * round up name length so it is a multiple of event_size * plus an extra byte for the terminating '\0'. */ - if (event->name_len) - name_len = roundup(event->name_len + 1, event_size); - inotify_event.len = name_len; - - inotify_event.mask = inotify_mask_to_arg(event->mask); + pad_name_len = round_event_name_len(fsn_event); + inotify_event.len = pad_name_len; + inotify_event.mask = inotify_mask_to_arg(fsn_event->mask); + inotify_event.wd = event->wd; inotify_event.cookie = event->sync_cookie; /* send the main event */ @@ -209,20 +203,18 @@ static ssize_t copy_event_to_user(struct fsnotify_group *group, /* * fsnotify only stores the pathname, so here we have to send the pathname * and then pad that pathname out to a multiple of sizeof(inotify_event) - * with zeros. I get my zeros from the nul_inotify_event. + * with zeros. */ - if (name_len) { - unsigned int len_to_zero = name_len - event->name_len; + if (pad_name_len) { /* copy the path name */ - if (copy_to_user(buf, event->file_name, event->name_len)) + if (copy_to_user(buf, event->name, name_len)) return -EFAULT; - buf += event->name_len; + buf += name_len; /* fill userspace with 0's */ - if (clear_user(buf, len_to_zero)) + if (clear_user(buf, pad_name_len - name_len)) return -EFAULT; - buf += len_to_zero; - event_size += name_len; + event_size += pad_name_len; } return event_size; @@ -254,7 +246,7 @@ static ssize_t inotify_read(struct file *file, char __user *buf, if (IS_ERR(kevent)) break; ret = copy_event_to_user(group, kevent, buf); - fsnotify_put_event(kevent); + fsnotify_destroy_event(group, kevent); if (ret < 0) break; buf += ret; @@ -297,8 +289,7 @@ static long inotify_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct fsnotify_group *group; - struct fsnotify_event_holder *holder; - struct fsnotify_event *event; + struct fsnotify_event *fsn_event; void __user *p; int ret = -ENOTTY; size_t send_len = 0; @@ -311,12 +302,10 @@ static long inotify_ioctl(struct file *file, unsigned int cmd, switch (cmd) { case FIONREAD: mutex_lock(&group->notification_mutex); - list_for_each_entry(holder, &group->notification_list, event_list) { - event = holder->event; + list_for_each_entry(fsn_event, &group->notification_list, + list) { send_len += sizeof(struct inotify_event); - if (event->name_len) - send_len += roundup(event->name_len + 1, - sizeof(struct inotify_event)); + send_len += round_event_name_len(fsn_event); } mutex_unlock(&group->notification_mutex); ret = put_user(send_len, (int __user *) p); @@ -503,43 +492,12 @@ void inotify_ignored_and_remove_idr(struct fsnotify_mark *fsn_mark, struct fsnotify_group *group) { struct inotify_inode_mark *i_mark; - struct fsnotify_event *ignored_event, *notify_event; - struct inotify_event_private_data *event_priv; - struct fsnotify_event_private_data *fsn_event_priv; - int ret; - - i_mark = container_of(fsn_mark, struct inotify_inode_mark, fsn_mark); - - ignored_event = fsnotify_create_event(NULL, FS_IN_IGNORED, NULL, - FSNOTIFY_EVENT_NONE, NULL, 0, - GFP_NOFS); - if (!ignored_event) - goto skip_send_ignore; - - event_priv = kmem_cache_alloc(event_priv_cachep, GFP_NOFS); - if (unlikely(!event_priv)) - goto skip_send_ignore; - - fsn_event_priv = &event_priv->fsnotify_event_priv_data; - - fsnotify_get_group(group); - fsn_event_priv->group = group; - event_priv->wd = i_mark->wd; - - notify_event = fsnotify_add_notify_event(group, ignored_event, fsn_event_priv, NULL); - if (notify_event) { - if (IS_ERR(notify_event)) - ret = PTR_ERR(notify_event); - else - fsnotify_put_event(notify_event); - inotify_free_event_priv(fsn_event_priv); - } -skip_send_ignore: - /* matches the reference taken when the event was created */ - if (ignored_event) - fsnotify_put_event(ignored_event); + /* Queue ignore event for the watch */ + inotify_handle_event(group, NULL, fsn_mark, NULL, FS_IN_IGNORED, + NULL, FSNOTIFY_EVENT_NONE, NULL, 0); + i_mark = container_of(fsn_mark, struct inotify_inode_mark, fsn_mark); /* remove this mark from the idr */ inotify_remove_from_idr(group, i_mark); @@ -675,11 +633,23 @@ static int inotify_update_watch(struct fsnotify_group *group, struct inode *inod static struct fsnotify_group *inotify_new_group(unsigned int max_events) { struct fsnotify_group *group; + struct inotify_event_info *oevent; group = fsnotify_alloc_group(&inotify_fsnotify_ops); if (IS_ERR(group)) return group; + oevent = kmalloc(sizeof(struct inotify_event_info), GFP_KERNEL); + if (unlikely(!oevent)) { + fsnotify_destroy_group(group); + return ERR_PTR(-ENOMEM); + } + group->overflow_event = &oevent->fse; + fsnotify_init_event(group->overflow_event, NULL, FS_Q_OVERFLOW); + oevent->wd = -1; + oevent->sync_cookie = 0; + oevent->name_len = 0; + group->max_events = max_events; spin_lock_init(&group->inotify_data.idr_lock); @@ -836,7 +806,6 @@ static int __init inotify_user_setup(void) BUG_ON(hweight32(ALL_INOTIFY_BITS) != 21); inotify_inode_mark_cachep = KMEM_CACHE(inotify_inode_mark, SLAB_PANIC); - event_priv_cachep = KMEM_CACHE(inotify_event_private_data, SLAB_PANIC); inotify_max_queued_events = 16384; inotify_max_user_instances = 128; diff --git a/fs/notify/notification.c b/fs/notify/notification.c index 7b51b05f160c..1e58402171a5 100644 --- a/fs/notify/notification.c +++ b/fs/notify/notification.c @@ -48,15 +48,6 @@ #include <linux/fsnotify_backend.h> #include "fsnotify.h" -static struct kmem_cache *fsnotify_event_cachep; -static struct kmem_cache *fsnotify_event_holder_cachep; -/* - * This is a magic event we send when the q is too full. Since it doesn't - * hold real event information we just keep one system wide and use it any time - * it is needed. It's refcnt is set 1 at kernel init time and will never - * get set to 0 so it will never get 'freed' - */ -static struct fsnotify_event *q_overflow_event; static atomic_t fsnotify_sync_cookie = ATOMIC_INIT(0); /** @@ -76,186 +67,82 @@ bool fsnotify_notify_queue_is_empty(struct fsnotify_group *group) return list_empty(&group->notification_list) ? true : false; } -void fsnotify_get_event(struct fsnotify_event *event) +void fsnotify_destroy_event(struct fsnotify_group *group, + struct fsnotify_event *event) { - atomic_inc(&event->refcnt); -} - -void fsnotify_put_event(struct fsnotify_event *event) -{ - if (!event) + /* Overflow events are per-group and we don't want to free them */ + if (!event || event->mask == FS_Q_OVERFLOW) return; - if (atomic_dec_and_test(&event->refcnt)) { - pr_debug("%s: event=%p\n", __func__, event); - - if (event->data_type == FSNOTIFY_EVENT_PATH) - path_put(&event->path); - - BUG_ON(!list_empty(&event->private_data_list)); - - kfree(event->file_name); - put_pid(event->tgid); - kmem_cache_free(fsnotify_event_cachep, event); - } -} - -struct fsnotify_event_holder *fsnotify_alloc_event_holder(void) -{ - return kmem_cache_alloc(fsnotify_event_holder_cachep, GFP_KERNEL); -} - -void fsnotify_destroy_event_holder(struct fsnotify_event_holder *holder) -{ - if (holder) - kmem_cache_free(fsnotify_event_holder_cachep, holder); -} - -/* - * Find the private data that the group previously attached to this event when - * the group added the event to the notification queue (fsnotify_add_notify_event) - */ -struct fsnotify_event_private_data *fsnotify_remove_priv_from_event(struct fsnotify_group *group, struct fsnotify_event *event) -{ - struct fsnotify_event_private_data *lpriv; - struct fsnotify_event_private_data *priv = NULL; - - assert_spin_locked(&event->lock); - - list_for_each_entry(lpriv, &event->private_data_list, event_list) { - if (lpriv->group == group) { - priv = lpriv; - list_del(&priv->event_list); - break; - } - } - return priv; + group->ops->free_event(event); } /* * Add an event to the group notification queue. The group can later pull this - * event off the queue to deal with. If the event is successfully added to the - * group's notification queue, a reference is taken on event. + * event off the queue to deal with. The function returns 0 if the event was + * added to the queue, 1 if the event was merged with some other queued event, + * 2 if the queue of events has overflown. */ -struct fsnotify_event *fsnotify_add_notify_event(struct fsnotify_group *group, struct fsnotify_event *event, - struct fsnotify_event_private_data *priv, - struct fsnotify_event *(*merge)(struct list_head *, - struct fsnotify_event *)) +int fsnotify_add_notify_event(struct fsnotify_group *group, + struct fsnotify_event *event, + int (*merge)(struct list_head *, + struct fsnotify_event *)) { - struct fsnotify_event *return_event = NULL; - struct fsnotify_event_holder *holder = NULL; + int ret = 0; struct list_head *list = &group->notification_list; - pr_debug("%s: group=%p event=%p priv=%p\n", __func__, group, event, priv); - - /* - * There is one fsnotify_event_holder embedded inside each fsnotify_event. - * Check if we expect to be able to use that holder. If not alloc a new - * holder. - * For the overflow event it's possible that something will use the in - * event holder before we get the lock so we may need to jump back and - * alloc a new holder, this can't happen for most events... - */ - if (!list_empty(&event->holder.event_list)) { -alloc_holder: - holder = fsnotify_alloc_event_holder(); - if (!holder) - return ERR_PTR(-ENOMEM); - } + pr_debug("%s: group=%p event=%p\n", __func__, group, event); mutex_lock(&group->notification_mutex); if (group->q_len >= group->max_events) { - event = q_overflow_event; - - /* - * we need to return the overflow event - * which means we need a ref - */ - fsnotify_get_event(event); - return_event = event; - - /* sorry, no private data on the overflow event */ - priv = NULL; - } - - if (!list_empty(list) && merge) { - struct fsnotify_event *tmp; - - tmp = merge(list, event); - if (tmp) { + ret = 2; + /* Queue overflow event only if it isn't already queued */ + if (!list_empty(&group->overflow_event->list)) { mutex_unlock(&group->notification_mutex); - - if (return_event) - fsnotify_put_event(return_event); - if (holder != &event->holder) - fsnotify_destroy_event_holder(holder); - return tmp; + return ret; } + event = group->overflow_event; + goto queue; } - spin_lock(&event->lock); - - if (list_empty(&event->holder.event_list)) { - if (unlikely(holder)) - fsnotify_destroy_event_holder(holder); - holder = &event->holder; - } else if (unlikely(!holder)) { - /* between the time we checked above and got the lock the in - * event holder was used, go back and get a new one */ - spin_unlock(&event->lock); - mutex_unlock(&group->notification_mutex); - - if (return_event) { - fsnotify_put_event(return_event); - return_event = NULL; + if (!list_empty(list) && merge) { + ret = merge(list, event); + if (ret) { + mutex_unlock(&group->notification_mutex); + return ret; } - - goto alloc_holder; } +queue: group->q_len++; - holder->event = event; - - fsnotify_get_event(event); - list_add_tail(&holder->event_list, list); - if (priv) - list_add_tail(&priv->event_list, &event->private_data_list); - spin_unlock(&event->lock); + list_add_tail(&event->list, list); mutex_unlock(&group->notification_mutex); wake_up(&group->notification_waitq); kill_fasync(&group->fsn_fa, SIGIO, POLL_IN); - return return_event; + return ret; } /* - * Remove and return the first event from the notification list. There is a - * reference held on this event since it was on the list. It is the responsibility - * of the caller to drop this reference. + * Remove and return the first event from the notification list. It is the + * responsibility of the caller to destroy the obtained event */ struct fsnotify_event *fsnotify_remove_notify_event(struct fsnotify_group *group) { struct fsnotify_event *event; - struct fsnotify_event_holder *holder; BUG_ON(!mutex_is_locked(&group->notification_mutex)); pr_debug("%s: group=%p\n", __func__, group); - holder = list_first_entry(&group->notification_list, struct fsnotify_event_holder, event_list); - - event = holder->event; - - spin_lock(&event->lock); - holder->event = NULL; - list_del_init(&holder->event_list); - spin_unlock(&event->lock); - - /* event == holder means we are referenced through the in event holder */ - if (holder != &event->holder) - fsnotify_destroy_event_holder(holder); - + event = list_first_entry(&group->notification_list, + struct fsnotify_event, list); + /* + * We need to init list head for the case of overflow event so that + * check in fsnotify_add_notify_events() works + */ + list_del_init(&event->list); group->q_len--; return event; @@ -266,15 +153,10 @@ struct fsnotify_event *fsnotify_remove_notify_event(struct fsnotify_group *group */ struct fsnotify_event *fsnotify_peek_notify_event(struct fsnotify_group *group) { - struct fsnotify_event *event; - struct fsnotify_event_holder *holder; - BUG_ON(!mutex_is_locked(&group->notification_mutex)); - holder = list_first_entry(&group->notification_list, struct fsnotify_event_holder, event_list); - event = holder->event; - - return event; + return list_first_entry(&group->notification_list, + struct fsnotify_event, list); } /* @@ -284,181 +166,31 @@ struct fsnotify_event *fsnotify_peek_notify_event(struct fsnotify_group *group) void fsnotify_flush_notify(struct fsnotify_group *group) { struct fsnotify_event *event; - struct fsnotify_event_private_data *priv; mutex_lock(&group->notification_mutex); while (!fsnotify_notify_queue_is_empty(group)) { event = fsnotify_remove_notify_event(group); - /* if they don't implement free_event_priv they better not have attached any */ - if (group->ops->free_event_priv) { - spin_lock(&event->lock); - priv = fsnotify_remove_priv_from_event(group, event); - spin_unlock(&event->lock); - if (priv) - group->ops->free_event_priv(priv); - } - fsnotify_put_event(event); /* matches fsnotify_add_notify_event */ + fsnotify_destroy_event(group, event); } mutex_unlock(&group->notification_mutex); } -static void initialize_event(struct fsnotify_event *event) -{ - INIT_LIST_HEAD(&event->holder.event_list); - atomic_set(&event->refcnt, 1); - - spin_lock_init(&event->lock); - - INIT_LIST_HEAD(&event->private_data_list); -} - -/* - * Caller damn well better be holding whatever mutex is protecting the - * old_holder->event_list and the new_event must be a clean event which - * cannot be found anywhere else in the kernel. - */ -int fsnotify_replace_event(struct fsnotify_event_holder *old_holder, - struct fsnotify_event *new_event) -{ - struct fsnotify_event *old_event = old_holder->event; - struct fsnotify_event_holder *new_holder = &new_event->holder; - - enum event_spinlock_class { - SPINLOCK_OLD, - SPINLOCK_NEW, - }; - - pr_debug("%s: old_event=%p new_event=%p\n", __func__, old_event, new_event); - - /* - * if the new_event's embedded holder is in use someone - * screwed up and didn't give us a clean new event. - */ - BUG_ON(!list_empty(&new_holder->event_list)); - - spin_lock_nested(&old_event->lock, SPINLOCK_OLD); - spin_lock_nested(&new_event->lock, SPINLOCK_NEW); - - new_holder->event = new_event; - list_replace_init(&old_holder->event_list, &new_holder->event_list); - - spin_unlock(&new_event->lock); - spin_unlock(&old_event->lock); - - /* event == holder means we are referenced through the in event holder */ - if (old_holder != &old_event->holder) - fsnotify_destroy_event_holder(old_holder); - - fsnotify_get_event(new_event); /* on the list take reference */ - fsnotify_put_event(old_event); /* off the list, drop reference */ - - return 0; -} - -struct fsnotify_event *fsnotify_clone_event(struct fsnotify_event *old_event) -{ - struct fsnotify_event *event; - - event = kmem_cache_alloc(fsnotify_event_cachep, GFP_KERNEL); - if (!event) - return NULL; - - pr_debug("%s: old_event=%p new_event=%p\n", __func__, old_event, event); - - memcpy(event, old_event, sizeof(*event)); - initialize_event(event); - - if (event->name_len) { - event->file_name = kstrdup(old_event->file_name, GFP_KERNEL); - if (!event->file_name) { - kmem_cache_free(fsnotify_event_cachep, event); - return NULL; - } - } - event->tgid = get_pid(old_event->tgid); - if (event->data_type == FSNOTIFY_EVENT_PATH) - path_get(&event->path); - - return event; -} - /* * fsnotify_create_event - Allocate a new event which will be sent to each * group's handle_event function if the group was interested in this * particular event. * - * @to_tell the inode which is supposed to receive the event (sometimes a + * @inode the inode which is supposed to receive the event (sometimes a * parent of the inode to which the event happened. * @mask what actually happened. * @data pointer to the object which was actually affected * @data_type flag indication if the data is a file, path, inode, nothing... * @name the filename, if available */ -struct fsnotify_event *fsnotify_create_event(struct inode *to_tell, __u32 mask, void *data, - int data_type, const unsigned char *name, - u32 cookie, gfp_t gfp) +void fsnotify_init_event(struct fsnotify_event *event, struct inode *inode, + u32 mask) { - struct fsnotify_event *event; - - event = kmem_cache_zalloc(fsnotify_event_cachep, gfp); - if (!event) - return NULL; - - pr_debug("%s: event=%p to_tell=%p mask=%x data=%p data_type=%d\n", - __func__, event, to_tell, mask, data, data_type); - - initialize_event(event); - - if (name) { - event->file_name = kstrdup(name, gfp); - if (!event->file_name) { - kmem_cache_free(fsnotify_event_cachep, event); - return NULL; - } - event->name_len = strlen(event->file_name); - } - - event->tgid = get_pid(task_tgid(current)); - event->sync_cookie = cookie; - event->to_tell = to_tell; - event->data_type = data_type; - - switch (data_type) { - case FSNOTIFY_EVENT_PATH: { - struct path *path = data; - event->path.dentry = path->dentry; - event->path.mnt = path->mnt; - path_get(&event->path); - break; - } - case FSNOTIFY_EVENT_INODE: - event->inode = data; - break; - case FSNOTIFY_EVENT_NONE: - event->inode = NULL; - event->path.dentry = NULL; - event->path.mnt = NULL; - break; - default: - BUG(); - } - + INIT_LIST_HEAD(&event->list); + event->inode = inode; event->mask = mask; - - return event; -} - -static __init int fsnotify_notification_init(void) -{ - fsnotify_event_cachep = KMEM_CACHE(fsnotify_event, SLAB_PANIC); - fsnotify_event_holder_cachep = KMEM_CACHE(fsnotify_event_holder, SLAB_PANIC); - - q_overflow_event = fsnotify_create_event(NULL, FS_Q_OVERFLOW, NULL, - FSNOTIFY_EVENT_NONE, NULL, 0, - GFP_KERNEL); - if (!q_overflow_event) - panic("unable to allocate fsnotify q_overflow_event\n"); - - return 0; } -subsys_initcall(fsnotify_notification_init); diff --git a/fs/ntfs/debug.c b/fs/ntfs/debug.c index 807150e2c2b9..dd6103cc93c1 100644 --- a/fs/ntfs/debug.c +++ b/fs/ntfs/debug.c @@ -18,16 +18,9 @@ * distribution in the file COPYING); if not, write to the Free Software * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ - +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include "debug.h" -/* - * A static buffer to hold the error string being displayed and a spinlock - * to protect concurrent accesses to it. - */ -static char err_buf[1024]; -static DEFINE_SPINLOCK(err_buf_lock); - /** * __ntfs_warning - output a warning to the syslog * @function: name of function outputting the warning @@ -50,6 +43,7 @@ static DEFINE_SPINLOCK(err_buf_lock); void __ntfs_warning(const char *function, const struct super_block *sb, const char *fmt, ...) { + struct va_format vaf; va_list args; int flen = 0; @@ -59,17 +53,15 @@ void __ntfs_warning(const char *function, const struct super_block *sb, #endif if (function) flen = strlen(function); - spin_lock(&err_buf_lock); va_start(args, fmt); - vsnprintf(err_buf, sizeof(err_buf), fmt, args); - va_end(args); + vaf.fmt = fmt; + vaf.va = &args; if (sb) - printk(KERN_ERR "NTFS-fs warning (device %s): %s(): %s\n", - sb->s_id, flen ? function : "", err_buf); + pr_warn("(device %s): %s(): %pV\n", + sb->s_id, flen ? function : "", &vaf); else - printk(KERN_ERR "NTFS-fs warning: %s(): %s\n", - flen ? function : "", err_buf); - spin_unlock(&err_buf_lock); + pr_warn("%s(): %pV\n", flen ? function : "", &vaf); + va_end(args); } /** @@ -94,6 +86,7 @@ void __ntfs_warning(const char *function, const struct super_block *sb, void __ntfs_error(const char *function, const struct super_block *sb, const char *fmt, ...) { + struct va_format vaf; va_list args; int flen = 0; @@ -103,17 +96,15 @@ void __ntfs_error(const char *function, const struct super_block *sb, #endif if (function) flen = strlen(function); - spin_lock(&err_buf_lock); va_start(args, fmt); - vsnprintf(err_buf, sizeof(err_buf), fmt, args); - va_end(args); + vaf.fmt = fmt; + vaf.va = &args; if (sb) - printk(KERN_ERR "NTFS-fs error (device %s): %s(): %s\n", - sb->s_id, flen ? function : "", err_buf); + pr_err("(device %s): %s(): %pV\n", + sb->s_id, flen ? function : "", &vaf); else - printk(KERN_ERR "NTFS-fs error: %s(): %s\n", - flen ? function : "", err_buf); - spin_unlock(&err_buf_lock); + pr_err("%s(): %pV\n", flen ? function : "", &vaf); + va_end(args); } #ifdef DEBUG @@ -124,6 +115,7 @@ int debug_msgs = 0; void __ntfs_debug (const char *file, int line, const char *function, const char *fmt, ...) { + struct va_format vaf; va_list args; int flen = 0; @@ -131,13 +123,11 @@ void __ntfs_debug (const char *file, int line, const char *function, return; if (function) flen = strlen(function); - spin_lock(&err_buf_lock); va_start(args, fmt); - vsnprintf(err_buf, sizeof(err_buf), fmt, args); + vaf.fmt = fmt; + vaf.va = &args; + pr_debug("(%s, %d): %s(): %pV", file, line, flen ? function : "", &vaf); va_end(args); - printk(KERN_DEBUG "NTFS-fs DEBUG (%s, %d): %s(): %s\n", file, line, - flen ? function : "", err_buf); - spin_unlock(&err_buf_lock); } /* Dump a runlist. Caller has to provide synchronisation for @rl. */ @@ -149,12 +139,12 @@ void ntfs_debug_dump_runlist(const runlist_element *rl) if (!debug_msgs) return; - printk(KERN_DEBUG "NTFS-fs DEBUG: Dumping runlist (values in hex):\n"); + pr_debug("Dumping runlist (values in hex):\n"); if (!rl) { - printk(KERN_DEBUG "Run list not present.\n"); + pr_debug("Run list not present.\n"); return; } - printk(KERN_DEBUG "VCN LCN Run length\n"); + pr_debug("VCN LCN Run length\n"); for (i = 0; ; i++) { LCN lcn = (rl + i)->lcn; @@ -163,13 +153,13 @@ void ntfs_debug_dump_runlist(const runlist_element *rl) if (index > -LCN_ENOENT - 1) index = 3; - printk(KERN_DEBUG "%-16Lx %s %-16Lx%s\n", + pr_debug("%-16Lx %s %-16Lx%s\n", (long long)(rl + i)->vcn, lcn_str[index], (long long)(rl + i)->length, (rl + i)->length ? "" : " (runlist end)"); } else - printk(KERN_DEBUG "%-16Lx %-16Lx %-16Lx%s\n", + pr_debug("%-16Lx %-16Lx %-16Lx%s\n", (long long)(rl + i)->vcn, (long long)(rl + i)->lcn, (long long)(rl + i)->length, diff --git a/fs/ntfs/debug.h b/fs/ntfs/debug.h index 53c27eaf2307..61bf091e32a8 100644 --- a/fs/ntfs/debug.h +++ b/fs/ntfs/debug.h @@ -48,7 +48,12 @@ extern void ntfs_debug_dump_runlist(const runlist_element *rl); #else /* !DEBUG */ -#define ntfs_debug(f, a...) do {} while (0) +#define ntfs_debug(fmt, ...) \ +do { \ + if (0) \ + no_printk(fmt, ##__VA_ARGS__); \ +} while (0) + #define ntfs_debug_dump_runlist(rl) do {} while (0) #endif /* !DEBUG */ diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c index ea4ba9daeb47..db9bd8a31725 100644 --- a/fs/ntfs/file.c +++ b/fs/ntfs/file.c @@ -2134,7 +2134,7 @@ static ssize_t ntfs_file_aio_write(struct kiocb *iocb, const struct iovec *iov, ret = ntfs_file_aio_write_nolock(iocb, iov, nr_segs, &iocb->ki_pos); mutex_unlock(&inode->i_mutex); if (ret > 0) { - int err = generic_write_sync(file, pos, ret); + int err = generic_write_sync(file, iocb->ki_pos - ret, ret); if (err < 0) ret = err; } diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c index ffb9b3675736..9d8153ebacfb 100644 --- a/fs/ntfs/inode.c +++ b/fs/ntfs/inode.c @@ -2259,7 +2259,7 @@ void ntfs_evict_big_inode(struct inode *vi) { ntfs_inode *ni = NTFS_I(vi); - truncate_inode_pages(&vi->i_data, 0); + truncate_inode_pages_final(&vi->i_data); clear_inode(vi); #ifdef NTFS_RW diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c index 82650d52d916..9de2491f2926 100644 --- a/fs/ntfs/super.c +++ b/fs/ntfs/super.c @@ -19,6 +19,7 @@ * distribution in the file COPYING); if not, write to the Free Software * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/stddef.h> #include <linux/init.h> @@ -468,6 +469,8 @@ static int ntfs_remount(struct super_block *sb, int *flags, char *opt) ntfs_debug("Entering with remount options string: %s", opt); + sync_filesystem(sb); + #ifndef NTFS_RW /* For read-only compiled driver, enforce read-only flag. */ *flags |= MS_RDONLY; @@ -1894,7 +1897,7 @@ get_ctx_vol_failed: vol->minor_ver = vi->minor_ver; ntfs_attr_put_search_ctx(ctx); unmap_mft_record(NTFS_I(vol->vol_ino)); - printk(KERN_INFO "NTFS volume version %i.%i.\n", vol->major_ver, + pr_info("volume version %i.%i.\n", vol->major_ver, vol->minor_ver); if (vol->major_ver < 3 && NVolSparseEnabled(vol)) { ntfs_warning(vol->sb, "Disabling sparse support due to NTFS " @@ -3093,7 +3096,7 @@ static int __init init_ntfs_fs(void) int err = 0; /* This may be ugly but it results in pretty output so who cares. (-8 */ - printk(KERN_INFO "NTFS driver " NTFS_VERSION " [Flags: R/" + pr_info("driver " NTFS_VERSION " [Flags: R/" #ifdef NTFS_RW "W" #else @@ -3113,16 +3116,15 @@ static int __init init_ntfs_fs(void) sizeof(ntfs_index_context), 0 /* offset */, SLAB_HWCACHE_ALIGN, NULL /* ctor */); if (!ntfs_index_ctx_cache) { - printk(KERN_CRIT "NTFS: Failed to create %s!\n", - ntfs_index_ctx_cache_name); + pr_crit("Failed to create %s!\n", ntfs_index_ctx_cache_name); goto ictx_err_out; } ntfs_attr_ctx_cache = kmem_cache_create(ntfs_attr_ctx_cache_name, sizeof(ntfs_attr_search_ctx), 0 /* offset */, SLAB_HWCACHE_ALIGN, NULL /* ctor */); if (!ntfs_attr_ctx_cache) { - printk(KERN_CRIT "NTFS: Failed to create %s!\n", - ntfs_attr_ctx_cache_name); + pr_crit("NTFS: Failed to create %s!\n", + ntfs_attr_ctx_cache_name); goto actx_err_out; } @@ -3130,8 +3132,7 @@ static int __init init_ntfs_fs(void) (NTFS_MAX_NAME_LEN+1) * sizeof(ntfschar), 0, SLAB_HWCACHE_ALIGN, NULL); if (!ntfs_name_cache) { - printk(KERN_CRIT "NTFS: Failed to create %s!\n", - ntfs_name_cache_name); + pr_crit("Failed to create %s!\n", ntfs_name_cache_name); goto name_err_out; } @@ -3139,8 +3140,7 @@ static int __init init_ntfs_fs(void) sizeof(ntfs_inode), 0, SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD, NULL); if (!ntfs_inode_cache) { - printk(KERN_CRIT "NTFS: Failed to create %s!\n", - ntfs_inode_cache_name); + pr_crit("Failed to create %s!\n", ntfs_inode_cache_name); goto inode_err_out; } @@ -3149,15 +3149,14 @@ static int __init init_ntfs_fs(void) SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD, ntfs_big_inode_init_once); if (!ntfs_big_inode_cache) { - printk(KERN_CRIT "NTFS: Failed to create %s!\n", - ntfs_big_inode_cache_name); + pr_crit("Failed to create %s!\n", ntfs_big_inode_cache_name); goto big_inode_err_out; } /* Register the ntfs sysctls. */ err = ntfs_sysctl(1); if (err) { - printk(KERN_CRIT "NTFS: Failed to register NTFS sysctls!\n"); + pr_crit("Failed to register NTFS sysctls!\n"); goto sysctl_err_out; } @@ -3166,7 +3165,7 @@ static int __init init_ntfs_fs(void) ntfs_debug("NTFS driver registered successfully."); return 0; /* Success! */ } - printk(KERN_CRIT "NTFS: Failed to register NTFS filesystem driver!\n"); + pr_crit("Failed to register NTFS filesystem driver!\n"); /* Unregister the ntfs sysctls. */ ntfs_sysctl(0); @@ -3182,8 +3181,7 @@ actx_err_out: kmem_cache_destroy(ntfs_index_ctx_cache); ictx_err_out: if (!err) { - printk(KERN_CRIT "NTFS: Aborting NTFS filesystem driver " - "registration...\n"); + pr_crit("Aborting NTFS filesystem driver registration...\n"); err = -ENOMEM; } return err; diff --git a/fs/ocfs2/Makefile b/fs/ocfs2/Makefile index f17e58b32989..ce210d4951a1 100644 --- a/fs/ocfs2/Makefile +++ b/fs/ocfs2/Makefile @@ -38,7 +38,6 @@ ocfs2-objs := \ symlink.o \ sysfile.o \ uptodate.o \ - ver.o \ quota_local.o \ quota_global.o \ xattr.o \ diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c index b4f788e0ca31..7e8282dcea2a 100644 --- a/fs/ocfs2/acl.c +++ b/fs/ocfs2/acl.c @@ -160,36 +160,6 @@ static struct posix_acl *ocfs2_get_acl_nolock(struct inode *inode, return acl; } - -/* - * Get posix acl. - */ -static struct posix_acl *ocfs2_get_acl(struct inode *inode, int type) -{ - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - struct buffer_head *di_bh = NULL; - struct posix_acl *acl; - int ret; - - if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL)) - return NULL; - - ret = ocfs2_inode_lock(inode, &di_bh, 0); - if (ret < 0) { - mlog_errno(ret); - acl = ERR_PTR(ret); - return acl; - } - - acl = ocfs2_get_acl_nolock(inode, type, di_bh); - - ocfs2_inode_unlock(inode, 0); - - brelse(di_bh); - - return acl; -} - /* * Helper function to set i_mode in memory and disk. Some call paths * will not have di_bh or a journal handle to pass, in which case it @@ -235,6 +205,7 @@ static int ocfs2_acl_set_mode(struct inode *inode, struct buffer_head *di_bh, di->i_mode = cpu_to_le16(inode->i_mode); di->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); di->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); + ocfs2_update_inode_fsync_trans(handle, inode, 0); ocfs2_journal_dirty(handle, di_bh); @@ -250,7 +221,7 @@ out: /* * Set the access or default ACL of an inode. */ -static int ocfs2_set_acl(handle_t *handle, +int ocfs2_set_acl(handle_t *handle, struct inode *inode, struct buffer_head *di_bh, int type, @@ -313,6 +284,11 @@ static int ocfs2_set_acl(handle_t *handle, return ret; } +int ocfs2_iop_set_acl(struct inode *inode, struct posix_acl *acl, int type) +{ + return ocfs2_set_acl(NULL, inode, NULL, type, acl, NULL, NULL); +} + struct posix_acl *ocfs2_iop_get_acl(struct inode *inode, int type) { struct ocfs2_super *osb; @@ -334,200 +310,3 @@ struct posix_acl *ocfs2_iop_get_acl(struct inode *inode, int type) return acl; } - -int ocfs2_acl_chmod(struct inode *inode) -{ - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - struct posix_acl *acl; - int ret; - - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - - if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL)) - return 0; - - acl = ocfs2_get_acl(inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl) || !acl) - return PTR_ERR(acl); - ret = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); - if (ret) - return ret; - ret = ocfs2_set_acl(NULL, inode, NULL, ACL_TYPE_ACCESS, - acl, NULL, NULL); - posix_acl_release(acl); - return ret; -} - -/* - * Initialize the ACLs of a new inode. If parent directory has default ACL, - * then clone to new inode. Called from ocfs2_mknod. - */ -int ocfs2_init_acl(handle_t *handle, - struct inode *inode, - struct inode *dir, - struct buffer_head *di_bh, - struct buffer_head *dir_bh, - struct ocfs2_alloc_context *meta_ac, - struct ocfs2_alloc_context *data_ac) -{ - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - struct posix_acl *acl = NULL; - int ret = 0, ret2; - umode_t mode; - - if (!S_ISLNK(inode->i_mode)) { - if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) { - acl = ocfs2_get_acl_nolock(dir, ACL_TYPE_DEFAULT, - dir_bh); - if (IS_ERR(acl)) - return PTR_ERR(acl); - } - if (!acl) { - mode = inode->i_mode & ~current_umask(); - ret = ocfs2_acl_set_mode(inode, di_bh, handle, mode); - if (ret) { - mlog_errno(ret); - goto cleanup; - } - } - } - if ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) && acl) { - if (S_ISDIR(inode->i_mode)) { - ret = ocfs2_set_acl(handle, inode, di_bh, - ACL_TYPE_DEFAULT, acl, - meta_ac, data_ac); - if (ret) - goto cleanup; - } - mode = inode->i_mode; - ret = posix_acl_create(&acl, GFP_NOFS, &mode); - if (ret < 0) - return ret; - - ret2 = ocfs2_acl_set_mode(inode, di_bh, handle, mode); - if (ret2) { - mlog_errno(ret2); - ret = ret2; - goto cleanup; - } - if (ret > 0) { - ret = ocfs2_set_acl(handle, inode, - di_bh, ACL_TYPE_ACCESS, - acl, meta_ac, data_ac); - } - } -cleanup: - posix_acl_release(acl); - return ret; -} - -static size_t ocfs2_xattr_list_acl_access(struct dentry *dentry, - char *list, - size_t list_len, - const char *name, - size_t name_len, - int type) -{ - struct ocfs2_super *osb = OCFS2_SB(dentry->d_sb); - const size_t size = sizeof(POSIX_ACL_XATTR_ACCESS); - - if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL)) - return 0; - - if (list && size <= list_len) - memcpy(list, POSIX_ACL_XATTR_ACCESS, size); - return size; -} - -static size_t ocfs2_xattr_list_acl_default(struct dentry *dentry, - char *list, - size_t list_len, - const char *name, - size_t name_len, - int type) -{ - struct ocfs2_super *osb = OCFS2_SB(dentry->d_sb); - const size_t size = sizeof(POSIX_ACL_XATTR_DEFAULT); - - if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL)) - return 0; - - if (list && size <= list_len) - memcpy(list, POSIX_ACL_XATTR_DEFAULT, size); - return size; -} - -static int ocfs2_xattr_get_acl(struct dentry *dentry, const char *name, - void *buffer, size_t size, int type) -{ - struct ocfs2_super *osb = OCFS2_SB(dentry->d_sb); - struct posix_acl *acl; - int ret; - - if (strcmp(name, "") != 0) - return -EINVAL; - if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL)) - return -EOPNOTSUPP; - - acl = ocfs2_get_acl(dentry->d_inode, type); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl == NULL) - return -ENODATA; - ret = posix_acl_to_xattr(&init_user_ns, acl, buffer, size); - posix_acl_release(acl); - - return ret; -} - -static int ocfs2_xattr_set_acl(struct dentry *dentry, const char *name, - const void *value, size_t size, int flags, int type) -{ - struct inode *inode = dentry->d_inode; - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - struct posix_acl *acl; - int ret = 0; - - if (strcmp(name, "") != 0) - return -EINVAL; - if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL)) - return -EOPNOTSUPP; - - if (!inode_owner_or_capable(inode)) - return -EPERM; - - if (value) { - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (IS_ERR(acl)) - return PTR_ERR(acl); - else if (acl) { - ret = posix_acl_valid(acl); - if (ret) - goto cleanup; - } - } else - acl = NULL; - - ret = ocfs2_set_acl(NULL, inode, NULL, type, acl, NULL, NULL); - -cleanup: - posix_acl_release(acl); - return ret; -} - -const struct xattr_handler ocfs2_xattr_acl_access_handler = { - .prefix = POSIX_ACL_XATTR_ACCESS, - .flags = ACL_TYPE_ACCESS, - .list = ocfs2_xattr_list_acl_access, - .get = ocfs2_xattr_get_acl, - .set = ocfs2_xattr_set_acl, -}; - -const struct xattr_handler ocfs2_xattr_acl_default_handler = { - .prefix = POSIX_ACL_XATTR_DEFAULT, - .flags = ACL_TYPE_DEFAULT, - .list = ocfs2_xattr_list_acl_default, - .get = ocfs2_xattr_get_acl, - .set = ocfs2_xattr_set_acl, -}; diff --git a/fs/ocfs2/acl.h b/fs/ocfs2/acl.h index 071fbd380f2f..3fce68d08625 100644 --- a/fs/ocfs2/acl.h +++ b/fs/ocfs2/acl.h @@ -27,10 +27,13 @@ struct ocfs2_acl_entry { }; struct posix_acl *ocfs2_iop_get_acl(struct inode *inode, int type); -extern int ocfs2_acl_chmod(struct inode *); -extern int ocfs2_init_acl(handle_t *, struct inode *, struct inode *, - struct buffer_head *, struct buffer_head *, - struct ocfs2_alloc_context *, - struct ocfs2_alloc_context *); +int ocfs2_iop_set_acl(struct inode *inode, struct posix_acl *acl, int type); +int ocfs2_set_acl(handle_t *handle, + struct inode *inode, + struct buffer_head *di_bh, + int type, + struct posix_acl *acl, + struct ocfs2_alloc_context *meta_ac, + struct ocfs2_alloc_context *data_ac); #endif /* OCFS2_ACL_H */ diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index dc7411fe185d..b4deb5f750d9 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -4742,6 +4742,7 @@ int ocfs2_add_clusters_in_btree(handle_t *handle, enum ocfs2_alloc_restarted *reason_ret) { int status = 0, err = 0; + int need_free = 0; int free_extents; enum ocfs2_alloc_restarted reason = RESTART_NONE; u32 bit_off, num_bits; @@ -4796,7 +4797,8 @@ int ocfs2_add_clusters_in_btree(handle_t *handle, OCFS2_JOURNAL_ACCESS_WRITE); if (status < 0) { mlog_errno(status); - goto leave; + need_free = 1; + goto bail; } block = ocfs2_clusters_to_blocks(osb->sb, bit_off); @@ -4807,7 +4809,8 @@ int ocfs2_add_clusters_in_btree(handle_t *handle, num_bits, flags, meta_ac); if (status < 0) { mlog_errno(status); - goto leave; + need_free = 1; + goto bail; } ocfs2_journal_dirty(handle, et->et_root_bh); @@ -4821,6 +4824,19 @@ int ocfs2_add_clusters_in_btree(handle_t *handle, reason = RESTART_TRANS; } +bail: + if (need_free) { + if (data_ac->ac_which == OCFS2_AC_USE_LOCAL) + ocfs2_free_local_alloc_bits(osb, handle, data_ac, + bit_off, num_bits); + else + ocfs2_free_clusters(handle, + data_ac->ac_inode, + data_ac->ac_bh, + ocfs2_clusters_to_blocks(osb->sb, bit_off), + num_bits); + } + leave: if (reason_ret) *reason_ret = reason; @@ -5712,6 +5728,7 @@ int ocfs2_remove_btree_range(struct inode *inode, } ocfs2_et_update_clusters(et, -len); + ocfs2_update_inode_fsync_trans(handle, inode, 1); ocfs2_journal_dirty(handle, et->et_root_bh); @@ -6805,6 +6822,8 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode, struct buffer_head *di_bh) { int ret, i, has_data, num_pages = 0; + int need_free = 0; + u32 bit_off, num; handle_t *handle; u64 uninitialized_var(block); struct ocfs2_inode_info *oi = OCFS2_I(inode); @@ -6850,7 +6869,6 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode, } if (has_data) { - u32 bit_off, num; unsigned int page_end; u64 phys; @@ -6886,6 +6904,7 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode, ret = ocfs2_grab_eof_pages(inode, 0, end, pages, &num_pages); if (ret) { mlog_errno(ret); + need_free = 1; goto out_commit; } @@ -6896,6 +6915,7 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode, ret = ocfs2_read_inline_data(inode, pages[0], di_bh); if (ret) { mlog_errno(ret); + need_free = 1; goto out_commit; } @@ -6913,6 +6933,7 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode, di->i_dyn_features = cpu_to_le16(oi->ip_dyn_features); spin_unlock(&oi->ip_lock); + ocfs2_update_inode_fsync_trans(handle, inode, 1); ocfs2_dinode_new_extent_list(inode, di); ocfs2_journal_dirty(handle, di_bh); @@ -6927,6 +6948,7 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode, ret = ocfs2_insert_extent(handle, &et, 0, block, 1, 0, NULL); if (ret) { mlog_errno(ret); + need_free = 1; goto out_commit; } @@ -6938,6 +6960,18 @@ out_commit: dquot_free_space_nodirty(inode, ocfs2_clusters_to_bytes(osb->sb, 1)); + if (need_free) { + if (data_ac->ac_which == OCFS2_AC_USE_LOCAL) + ocfs2_free_local_alloc_bits(osb, handle, data_ac, + bit_off, num); + else + ocfs2_free_clusters(handle, + data_ac->ac_inode, + data_ac->ac_bh, + ocfs2_clusters_to_blocks(osb->sb, bit_off), + num); + } + ocfs2_commit_trans(osb, handle); out_unlock: @@ -7126,7 +7160,7 @@ int ocfs2_truncate_inline(struct inode *inode, struct buffer_head *di_bh, if (end > i_size_read(inode)) end = i_size_read(inode); - BUG_ON(start >= end); + BUG_ON(start > end); if (!(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) || !(le16_to_cpu(di->i_dyn_features) & OCFS2_INLINE_DATA_FL) || @@ -7176,6 +7210,7 @@ int ocfs2_truncate_inline(struct inode *inode, struct buffer_head *di_bh, di->i_ctime = di->i_mtime = cpu_to_le64(inode->i_ctime.tv_sec); di->i_ctime_nsec = di->i_mtime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); + ocfs2_update_inode_fsync_trans(handle, inode, 1); ocfs2_journal_dirty(handle, di_bh); out_commit: @@ -7260,14 +7295,8 @@ int ocfs2_trim_fs(struct super_block *sb, struct fstrim_range *range) start = range->start >> osb->s_clustersize_bits; len = range->len >> osb->s_clustersize_bits; minlen = range->minlen >> osb->s_clustersize_bits; - trimmed = 0; - if (!len) { - range->len = 0; - return 0; - } - - if (minlen >= osb->bitmap_cpg) + if (minlen >= osb->bitmap_cpg || range->len < sb->s_blocksize) return -EINVAL; main_bm_inode = ocfs2_get_system_file_inode(osb, @@ -7293,6 +7322,7 @@ int ocfs2_trim_fs(struct super_block *sb, struct fstrim_range *range) goto out_unlock; } + len = range->len >> osb->s_clustersize_bits; if (start + len > le32_to_cpu(main_bm->i_clusters)) len = le32_to_cpu(main_bm->i_clusters) - start; @@ -7307,6 +7337,7 @@ int ocfs2_trim_fs(struct super_block *sb, struct fstrim_range *range) last_group = ocfs2_which_cluster_group(main_bm_inode, start + len - 1); last_bit = osb->bitmap_cpg; + trimmed = 0; for (group = first_group; group <= last_group;) { if (first_bit + len >= osb->bitmap_cpg) last_bit = osb->bitmap_cpg; diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c index aeb44e879c51..d310d12a9adc 100644 --- a/fs/ocfs2/aops.c +++ b/fs/ocfs2/aops.c @@ -571,7 +571,6 @@ static void ocfs2_dio_end_io(struct kiocb *iocb, { struct inode *inode = file_inode(iocb->ki_filp); int level; - wait_queue_head_t *wq = ocfs2_ioend_wq(inode); /* this io's submitter should not have unlocked this before we could */ BUG_ON(!ocfs2_iocb_is_rw_locked(iocb)); @@ -582,10 +581,7 @@ static void ocfs2_dio_end_io(struct kiocb *iocb, if (ocfs2_iocb_is_unaligned_aio(iocb)) { ocfs2_iocb_clear_unaligned_aio(iocb); - if (atomic_dec_and_test(&OCFS2_I(inode)->ip_unaligned_aio) && - waitqueue_active(wq)) { - wake_up_all(wq); - } + mutex_unlock(&OCFS2_I(inode)->ip_unaligned_aio); } ocfs2_iocb_clear_rw_locked(iocb); @@ -2043,6 +2039,7 @@ out_write_size: inode->i_mtime = inode->i_ctime = CURRENT_TIME; di->i_mtime = di->i_ctime = cpu_to_le64(inode->i_mtime.tv_sec); di->i_mtime_nsec = di->i_ctime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); + ocfs2_update_inode_fsync_trans(handle, inode, 1); ocfs2_journal_dirty(handle, wc->w_di_bh); ocfs2_commit_trans(osb, handle); diff --git a/fs/ocfs2/aops.h b/fs/ocfs2/aops.h index f671e49beb34..6cae155d54df 100644 --- a/fs/ocfs2/aops.h +++ b/fs/ocfs2/aops.h @@ -102,9 +102,4 @@ enum ocfs2_iocb_lock_bits { #define ocfs2_iocb_is_unaligned_aio(iocb) \ test_bit(OCFS2_IOCB_UNALIGNED_IO, (unsigned long *)&iocb->private) -#define OCFS2_IOEND_WQ_HASH_SZ 37 -#define ocfs2_ioend_wq(v) (&ocfs2__ioend_wq[((unsigned long)(v)) %\ - OCFS2_IOEND_WQ_HASH_SZ]) -extern wait_queue_head_t ocfs2__ioend_wq[OCFS2_IOEND_WQ_HASH_SZ]; - #endif /* OCFS2_FILE_H */ diff --git a/fs/ocfs2/buffer_head_io.c b/fs/ocfs2/buffer_head_io.c index 5b704c63a103..1edcb141f639 100644 --- a/fs/ocfs2/buffer_head_io.c +++ b/fs/ocfs2/buffer_head_io.c @@ -90,7 +90,6 @@ int ocfs2_write_block(struct ocfs2_super *osb, struct buffer_head *bh, * information for this bh as it's not marked locally * uptodate. */ ret = -EIO; - put_bh(bh); mlog_errno(ret); } @@ -420,7 +419,6 @@ int ocfs2_write_super_or_backup(struct ocfs2_super *osb, if (!buffer_uptodate(bh)) { ret = -EIO; - put_bh(bh); mlog_errno(ret); } diff --git a/fs/ocfs2/cluster/Makefile b/fs/ocfs2/cluster/Makefile index bc8c5e7d8608..1aefc0350ec3 100644 --- a/fs/ocfs2/cluster/Makefile +++ b/fs/ocfs2/cluster/Makefile @@ -1,4 +1,4 @@ obj-$(CONFIG_OCFS2_FS) += ocfs2_nodemanager.o ocfs2_nodemanager-objs := heartbeat.o masklog.o sys.o nodemanager.o \ - quorum.o tcp.o netdebug.o ver.o + quorum.o tcp.o netdebug.o diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c index 73920ffda05b..bf482dfed14f 100644 --- a/fs/ocfs2/cluster/heartbeat.c +++ b/fs/ocfs2/cluster/heartbeat.c @@ -413,7 +413,7 @@ static struct bio *o2hb_setup_one_bio(struct o2hb_region *reg, } /* Must put everything in 512 byte sectors for the bio... */ - bio->bi_sector = (reg->hr_start_block + cs) << (bits - 9); + bio->bi_iter.bi_sector = (reg->hr_start_block + cs) << (bits - 9); bio->bi_bdev = reg->hr_bdev; bio->bi_private = wc; bio->bi_end_io = o2hb_bio_end_io; diff --git a/fs/ocfs2/cluster/nodemanager.c b/fs/ocfs2/cluster/nodemanager.c index bb240647ca5f..441c84e169e6 100644 --- a/fs/ocfs2/cluster/nodemanager.c +++ b/fs/ocfs2/cluster/nodemanager.c @@ -29,7 +29,6 @@ #include "heartbeat.h" #include "masklog.h" #include "sys.h" -#include "ver.h" /* for now we operate under the assertion that there can be only one * cluster active at a time. Changing this will require trickling @@ -945,8 +944,6 @@ static int __init init_o2nm(void) { int ret = -1; - cluster_print_version(); - ret = o2hb_init(); if (ret) goto out; @@ -984,6 +981,7 @@ out: MODULE_AUTHOR("Oracle"); MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("OCFS2 cluster management"); module_init(init_o2nm) module_exit(exit_o2nm) diff --git a/fs/ocfs2/cluster/sys.c b/fs/ocfs2/cluster/sys.c index a4b07730b2e1..b7f57271d49c 100644 --- a/fs/ocfs2/cluster/sys.c +++ b/fs/ocfs2/cluster/sys.c @@ -41,7 +41,7 @@ static ssize_t version_show(struct kobject *kobj, struct kobj_attribute *attr, return snprintf(buf, PAGE_SIZE, "%u\n", O2NM_API_VERSION); } static struct kobj_attribute attr_version = - __ATTR(interface_revision, S_IFREG | S_IRUGO, version_show, NULL); + __ATTR(interface_revision, S_IRUGO, version_show, NULL); static struct attribute *o2cb_attrs[] = { &attr_version.attr, diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c index 2cd2406b4140..eb649d23a4de 100644 --- a/fs/ocfs2/cluster/tcp.c +++ b/fs/ocfs2/cluster/tcp.c @@ -262,17 +262,17 @@ static void o2net_update_recv_stats(struct o2net_sock_container *sc) #endif /* CONFIG_OCFS2_FS_STATS */ -static inline int o2net_reconnect_delay(void) +static inline unsigned int o2net_reconnect_delay(void) { return o2nm_single_cluster->cl_reconnect_delay_ms; } -static inline int o2net_keepalive_delay(void) +static inline unsigned int o2net_keepalive_delay(void) { return o2nm_single_cluster->cl_keepalive_delay_ms; } -static inline int o2net_idle_timeout(void) +static inline unsigned int o2net_idle_timeout(void) { return o2nm_single_cluster->cl_idle_timeout_ms; } @@ -1964,18 +1964,30 @@ static void o2net_listen_data_ready(struct sock *sk, int bytes) goto out; } - /* ->sk_data_ready is also called for a newly established child socket - * before it has been accepted and the acceptor has set up their - * data_ready.. we only want to queue listen work for our listening - * socket */ + /* This callback may called twice when a new connection + * is being established as a child socket inherits everything + * from a parent LISTEN socket, including the data_ready cb of + * the parent. This leads to a hazard. In o2net_accept_one() + * we are still initializing the child socket but have not + * changed the inherited data_ready callback yet when + * data starts arriving. + * We avoid this hazard by checking the state. + * For the listening socket, the state will be TCP_LISTEN; for the new + * socket, will be TCP_ESTABLISHED. Also, in this case, + * sk->sk_user_data is not a valid function pointer. + */ + if (sk->sk_state == TCP_LISTEN) { mlog(ML_TCP, "bytes: %d\n", bytes); queue_work(o2net_wq, &o2net_listen_work); + } else { + ready = NULL; } out: read_unlock(&sk->sk_callback_lock); - ready(sk, bytes); + if (ready != NULL) + ready(sk, bytes); } static int o2net_open_listening_sock(__be32 addr, __be16 port) diff --git a/fs/ocfs2/cluster/ver.c b/fs/ocfs2/cluster/ver.c deleted file mode 100644 index a56eee6abad3..000000000000 --- a/fs/ocfs2/cluster/ver.c +++ /dev/null @@ -1,42 +0,0 @@ -/* -*- mode: c; c-basic-offset: 8; -*- - * vim: noexpandtab sw=8 ts=8 sts=0: - * - * ver.c - * - * version string - * - * Copyright (C) 2002, 2005 Oracle. All rights reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 021110-1307, USA. - */ - -#include <linux/module.h> -#include <linux/kernel.h> - -#include "ver.h" - -#define CLUSTER_BUILD_VERSION "1.5.0" - -#define VERSION_STR "OCFS2 Node Manager " CLUSTER_BUILD_VERSION - -void cluster_print_version(void) -{ - printk(KERN_INFO "%s\n", VERSION_STR); -} - -MODULE_DESCRIPTION(VERSION_STR); - -MODULE_VERSION(CLUSTER_BUILD_VERSION); diff --git a/fs/ocfs2/cluster/ver.h b/fs/ocfs2/cluster/ver.h deleted file mode 100644 index 32554c3382c2..000000000000 --- a/fs/ocfs2/cluster/ver.h +++ /dev/null @@ -1,31 +0,0 @@ -/* -*- mode: c; c-basic-offset: 8; -*- - * vim: noexpandtab sw=8 ts=8 sts=0: - * - * ver.h - * - * Function prototypes - * - * Copyright (C) 2005 Oracle. All rights reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 021110-1307, USA. - */ - -#ifndef O2CLUSTER_VER_H -#define O2CLUSTER_VER_H - -void cluster_print_version(void); - -#endif /* O2CLUSTER_VER_H */ diff --git a/fs/ocfs2/dcache.c b/fs/ocfs2/dcache.c index 0d3a97d2d5f6..e2e05a106beb 100644 --- a/fs/ocfs2/dcache.c +++ b/fs/ocfs2/dcache.c @@ -37,7 +37,6 @@ #include "dlmglue.h" #include "file.h" #include "inode.h" -#include "super.h" #include "ocfs2_trace.h" void ocfs2_dentry_attach_gen(struct dentry *dentry) @@ -346,52 +345,6 @@ out_attach: return ret; } -DEFINE_SPINLOCK(dentry_list_lock); - -/* We limit the number of dentry locks to drop in one go. We have - * this limit so that we don't starve other users of ocfs2_wq. */ -#define DL_INODE_DROP_COUNT 64 - -/* Drop inode references from dentry locks */ -static void __ocfs2_drop_dl_inodes(struct ocfs2_super *osb, int drop_count) -{ - struct ocfs2_dentry_lock *dl; - - spin_lock(&dentry_list_lock); - while (osb->dentry_lock_list && (drop_count < 0 || drop_count--)) { - dl = osb->dentry_lock_list; - osb->dentry_lock_list = dl->dl_next; - spin_unlock(&dentry_list_lock); - iput(dl->dl_inode); - kfree(dl); - spin_lock(&dentry_list_lock); - } - spin_unlock(&dentry_list_lock); -} - -void ocfs2_drop_dl_inodes(struct work_struct *work) -{ - struct ocfs2_super *osb = container_of(work, struct ocfs2_super, - dentry_lock_work); - - __ocfs2_drop_dl_inodes(osb, DL_INODE_DROP_COUNT); - /* - * Don't queue dropping if umount is in progress. We flush the - * list in ocfs2_dismount_volume - */ - spin_lock(&dentry_list_lock); - if (osb->dentry_lock_list && - !ocfs2_test_osb_flag(osb, OCFS2_OSB_DROP_DENTRY_LOCK_IMMED)) - queue_work(ocfs2_wq, &osb->dentry_lock_work); - spin_unlock(&dentry_list_lock); -} - -/* Flush the whole work queue */ -void ocfs2_drop_all_dl_inodes(struct ocfs2_super *osb) -{ - __ocfs2_drop_dl_inodes(osb, -1); -} - /* * ocfs2_dentry_iput() and friends. * @@ -416,24 +369,16 @@ void ocfs2_drop_all_dl_inodes(struct ocfs2_super *osb) static void ocfs2_drop_dentry_lock(struct ocfs2_super *osb, struct ocfs2_dentry_lock *dl) { + iput(dl->dl_inode); ocfs2_simple_drop_lockres(osb, &dl->dl_lockres); ocfs2_lock_res_free(&dl->dl_lockres); - - /* We leave dropping of inode reference to ocfs2_wq as that can - * possibly lead to inode deletion which gets tricky */ - spin_lock(&dentry_list_lock); - if (!osb->dentry_lock_list && - !ocfs2_test_osb_flag(osb, OCFS2_OSB_DROP_DENTRY_LOCK_IMMED)) - queue_work(ocfs2_wq, &osb->dentry_lock_work); - dl->dl_next = osb->dentry_lock_list; - osb->dentry_lock_list = dl; - spin_unlock(&dentry_list_lock); + kfree(dl); } void ocfs2_dentry_lock_put(struct ocfs2_super *osb, struct ocfs2_dentry_lock *dl) { - int unlock; + int unlock = 0; BUG_ON(dl->dl_count == 0); diff --git a/fs/ocfs2/dcache.h b/fs/ocfs2/dcache.h index b79eff709958..55f58892b153 100644 --- a/fs/ocfs2/dcache.h +++ b/fs/ocfs2/dcache.h @@ -29,13 +29,8 @@ extern const struct dentry_operations ocfs2_dentry_ops; struct ocfs2_dentry_lock { - /* Use count of dentry lock */ unsigned int dl_count; - union { - /* Linked list of dentry locks to release */ - struct ocfs2_dentry_lock *dl_next; - u64 dl_parent_blkno; - }; + u64 dl_parent_blkno; /* * The ocfs2_dentry_lock keeps an inode reference until @@ -49,14 +44,9 @@ struct ocfs2_dentry_lock { int ocfs2_dentry_attach_lock(struct dentry *dentry, struct inode *inode, u64 parent_blkno); -extern spinlock_t dentry_list_lock; - void ocfs2_dentry_lock_put(struct ocfs2_super *osb, struct ocfs2_dentry_lock *dl); -void ocfs2_drop_dl_inodes(struct work_struct *work); -void ocfs2_drop_all_dl_inodes(struct ocfs2_super *osb); - struct dentry *ocfs2_find_local_alias(struct inode *inode, u64 parent_blkno, int skip_unhashed); diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c index 91a7e85ac8fd..0717662b4aef 100644 --- a/fs/ocfs2/dir.c +++ b/fs/ocfs2/dir.c @@ -2957,6 +2957,7 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh, ocfs2_init_dir_trailer(dir, dirdata_bh, i); } + ocfs2_update_inode_fsync_trans(handle, dir, 1); ocfs2_journal_dirty(handle, dirdata_bh); if (ocfs2_supports_indexed_dirs(osb) && !dx_inline) { @@ -3005,6 +3006,7 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh, di->i_size = cpu_to_le64(sb->s_blocksize); di->i_ctime = di->i_mtime = cpu_to_le64(dir->i_ctime.tv_sec); di->i_ctime_nsec = di->i_mtime_nsec = cpu_to_le32(dir->i_ctime.tv_nsec); + ocfs2_update_inode_fsync_trans(handle, dir, 1); /* * This should never fail as our extent list is empty and all @@ -3338,6 +3340,7 @@ do_extend: } else { de->rec_len = cpu_to_le16(sb->s_blocksize); } + ocfs2_update_inode_fsync_trans(handle, dir, 1); ocfs2_journal_dirty(handle, new_bh); dir_i_size += dir->i_sb->s_blocksize; @@ -3896,6 +3899,7 @@ out_commit: dquot_free_space_nodirty(dir, ocfs2_clusters_to_bytes(dir->i_sb, 1)); + ocfs2_update_inode_fsync_trans(handle, dir, 1); ocfs2_commit_trans(osb, handle); out: @@ -4134,6 +4138,7 @@ static int ocfs2_expand_inline_dx_root(struct inode *dir, mlog_errno(ret); did_quota = 0; + ocfs2_update_inode_fsync_trans(handle, dir, 1); ocfs2_journal_dirty(handle, dx_root_bh); out_commit: @@ -4401,6 +4406,7 @@ static int ocfs2_dx_dir_remove_index(struct inode *dir, di->i_dyn_features = cpu_to_le16(OCFS2_I(dir)->ip_dyn_features); spin_unlock(&OCFS2_I(dir)->ip_lock); di->i_dx_root = cpu_to_le64(0ULL); + ocfs2_update_inode_fsync_trans(handle, dir, 1); ocfs2_journal_dirty(handle, di_bh); diff --git a/fs/ocfs2/dlm/Makefile b/fs/ocfs2/dlm/Makefile index c8a044efbb15..bd1aab1f49a4 100644 --- a/fs/ocfs2/dlm/Makefile +++ b/fs/ocfs2/dlm/Makefile @@ -3,5 +3,5 @@ ccflags-y := -Ifs/ocfs2 obj-$(CONFIG_OCFS2_FS_O2CB) += ocfs2_dlm.o ocfs2_dlm-objs := dlmdomain.o dlmdebug.o dlmthread.o dlmrecovery.o \ - dlmmaster.o dlmast.o dlmconvert.o dlmlock.o dlmunlock.o dlmver.o + dlmmaster.o dlmast.o dlmconvert.o dlmlock.o dlmunlock.o diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c index 8b3382abf840..c973690dc0bc 100644 --- a/fs/ocfs2/dlm/dlmdomain.c +++ b/fs/ocfs2/dlm/dlmdomain.c @@ -43,8 +43,6 @@ #include "dlmdomain.h" #include "dlmdebug.h" -#include "dlmver.h" - #define MLOG_MASK_PREFIX (ML_DLM|ML_DLM_DOMAIN) #include "cluster/masklog.h" @@ -1125,7 +1123,6 @@ static int dlm_query_region_handler(struct o2net_msg *msg, u32 len, struct dlm_ctxt *dlm = NULL; char *local = NULL; int status = 0; - int locked = 0; qr = (struct dlm_query_region *) msg->buf; @@ -1134,10 +1131,8 @@ static int dlm_query_region_handler(struct o2net_msg *msg, u32 len, /* buffer used in dlm_mast_regions() */ local = kmalloc(sizeof(qr->qr_regions), GFP_KERNEL); - if (!local) { - status = -ENOMEM; - goto bail; - } + if (!local) + return -ENOMEM; status = -EINVAL; @@ -1146,16 +1141,15 @@ static int dlm_query_region_handler(struct o2net_msg *msg, u32 len, if (!dlm) { mlog(ML_ERROR, "Node %d queried hb regions on domain %s " "before join domain\n", qr->qr_node, qr->qr_domain); - goto bail; + goto out_domain_lock; } spin_lock(&dlm->spinlock); - locked = 1; if (dlm->joining_node != qr->qr_node) { mlog(ML_ERROR, "Node %d queried hb regions on domain %s " "but joining node is %d\n", qr->qr_node, qr->qr_domain, dlm->joining_node); - goto bail; + goto out_dlm_lock; } /* Support for global heartbeat was added in 1.1 */ @@ -1165,14 +1159,15 @@ static int dlm_query_region_handler(struct o2net_msg *msg, u32 len, "but active dlm protocol is %d.%d\n", qr->qr_node, qr->qr_domain, dlm->dlm_locking_proto.pv_major, dlm->dlm_locking_proto.pv_minor); - goto bail; + goto out_dlm_lock; } status = dlm_match_regions(dlm, qr, local, sizeof(qr->qr_regions)); -bail: - if (locked) - spin_unlock(&dlm->spinlock); +out_dlm_lock: + spin_unlock(&dlm->spinlock); + +out_domain_lock: spin_unlock(&dlm_domain_lock); kfree(local); @@ -1879,19 +1874,19 @@ static int dlm_join_domain(struct dlm_ctxt *dlm) goto bail; } - status = dlm_debug_init(dlm); + status = dlm_launch_thread(dlm); if (status < 0) { mlog_errno(status); goto bail; } - status = dlm_launch_thread(dlm); + status = dlm_launch_recovery_thread(dlm); if (status < 0) { mlog_errno(status); goto bail; } - status = dlm_launch_recovery_thread(dlm); + status = dlm_debug_init(dlm); if (status < 0) { mlog_errno(status); goto bail; @@ -2328,8 +2323,6 @@ static int __init dlm_init(void) { int status; - dlm_print_version(); - status = dlm_init_mle_cache(); if (status) { mlog(ML_ERROR, "Could not create o2dlm_mle slabcache\n"); @@ -2379,6 +2372,7 @@ static void __exit dlm_exit (void) MODULE_AUTHOR("Oracle"); MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("OCFS2 Distributed Lock Management"); module_init(dlm_init); module_exit(dlm_exit); diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c index 7035af09cc03..fe29f7978f81 100644 --- a/fs/ocfs2/dlm/dlmrecovery.c +++ b/fs/ocfs2/dlm/dlmrecovery.c @@ -537,7 +537,10 @@ master_here: /* success! see if any other nodes need recovery */ mlog(0, "DONE mastering recovery of %s:%u here(this=%u)!\n", dlm->name, dlm->reco.dead_node, dlm->node_num); - dlm_reset_recovery(dlm); + spin_lock(&dlm->spinlock); + __dlm_reset_recovery(dlm); + dlm->reco.state &= ~DLM_RECO_STATE_FINALIZE; + spin_unlock(&dlm->spinlock); } dlm_end_recovery(dlm); @@ -695,6 +698,14 @@ static int dlm_remaster_locks(struct dlm_ctxt *dlm, u8 dead_node) if (all_nodes_done) { int ret; + /* Set this flag on recovery master to avoid + * a new recovery for another dead node start + * before the recovery is not done. That may + * cause recovery hung.*/ + spin_lock(&dlm->spinlock); + dlm->reco.state |= DLM_RECO_STATE_FINALIZE; + spin_unlock(&dlm->spinlock); + /* all nodes are now in DLM_RECO_NODE_DATA_DONE state * just send a finalize message to everyone and * clean up */ @@ -1750,13 +1761,13 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm, struct dlm_migratable_lockres *mres) { struct dlm_migratable_lock *ml; - struct list_head *queue; + struct list_head *queue, *iter; struct list_head *tmpq = NULL; struct dlm_lock *newlock = NULL; struct dlm_lockstatus *lksb = NULL; int ret = 0; int i, j, bad; - struct dlm_lock *lock = NULL; + struct dlm_lock *lock; u8 from = O2NM_MAX_NODES; unsigned int added = 0; __be64 c; @@ -1791,14 +1802,16 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm, /* MIGRATION ONLY! */ BUG_ON(!(mres->flags & DLM_MRES_MIGRATION)); + lock = NULL; spin_lock(&res->spinlock); for (j = DLM_GRANTED_LIST; j <= DLM_BLOCKED_LIST; j++) { tmpq = dlm_list_idx_to_ptr(res, j); - list_for_each_entry(lock, tmpq, list) { - if (lock->ml.cookie != ml->cookie) - lock = NULL; - else + list_for_each(iter, tmpq) { + lock = list_entry(iter, + struct dlm_lock, list); + if (lock->ml.cookie == ml->cookie) break; + lock = NULL; } if (lock) break; @@ -2882,8 +2895,8 @@ int dlm_finalize_reco_handler(struct o2net_msg *msg, u32 len, void *data, BUG(); } dlm->reco.state &= ~DLM_RECO_STATE_FINALIZE; + __dlm_reset_recovery(dlm); spin_unlock(&dlm->spinlock); - dlm_reset_recovery(dlm); dlm_kick_recovery_thread(dlm); break; default: diff --git a/fs/ocfs2/dlm/dlmver.c b/fs/ocfs2/dlm/dlmver.c deleted file mode 100644 index dfc0da4d158d..000000000000 --- a/fs/ocfs2/dlm/dlmver.c +++ /dev/null @@ -1,42 +0,0 @@ -/* -*- mode: c; c-basic-offset: 8; -*- - * vim: noexpandtab sw=8 ts=8 sts=0: - * - * dlmver.c - * - * version string - * - * Copyright (C) 2002, 2005 Oracle. All rights reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 021110-1307, USA. - */ - -#include <linux/module.h> -#include <linux/kernel.h> - -#include "dlmver.h" - -#define DLM_BUILD_VERSION "1.5.0" - -#define VERSION_STR "OCFS2 DLM " DLM_BUILD_VERSION - -void dlm_print_version(void) -{ - printk(KERN_INFO "%s\n", VERSION_STR); -} - -MODULE_DESCRIPTION(VERSION_STR); - -MODULE_VERSION(DLM_BUILD_VERSION); diff --git a/fs/ocfs2/dlm/dlmver.h b/fs/ocfs2/dlm/dlmver.h deleted file mode 100644 index f674aee77a16..000000000000 --- a/fs/ocfs2/dlm/dlmver.h +++ /dev/null @@ -1,31 +0,0 @@ -/* -*- mode: c; c-basic-offset: 8; -*- - * vim: noexpandtab sw=8 ts=8 sts=0: - * - * dlmfsver.h - * - * Function prototypes - * - * Copyright (C) 2005 Oracle. All rights reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 021110-1307, USA. - */ - -#ifndef DLM_VER_H -#define DLM_VER_H - -void dlm_print_version(void); - -#endif /* DLM_VER_H */ diff --git a/fs/ocfs2/dlmfs/Makefile b/fs/ocfs2/dlmfs/Makefile index f14be89a6701..eed3db8c5b49 100644 --- a/fs/ocfs2/dlmfs/Makefile +++ b/fs/ocfs2/dlmfs/Makefile @@ -2,4 +2,4 @@ ccflags-y := -Ifs/ocfs2 obj-$(CONFIG_OCFS2_FS) += ocfs2_dlmfs.o -ocfs2_dlmfs-objs := userdlm.o dlmfs.o dlmfsver.o +ocfs2_dlmfs-objs := userdlm.o dlmfs.o diff --git a/fs/ocfs2/dlmfs/dlmfs.c b/fs/ocfs2/dlmfs/dlmfs.c index efa2b3d339e3..09b7d9dac71d 100644 --- a/fs/ocfs2/dlmfs/dlmfs.c +++ b/fs/ocfs2/dlmfs/dlmfs.c @@ -49,7 +49,6 @@ #include "stackglue.h" #include "userdlm.h" -#include "dlmfsver.h" #define MLOG_MASK_PREFIX ML_DLMFS #include "cluster/masklog.h" @@ -644,8 +643,6 @@ static int __init init_dlmfs_fs(void) int status; int cleanup_inode = 0, cleanup_worker = 0; - dlmfs_print_version(); - status = bdi_init(&dlmfs_backing_dev_info); if (status) return status; @@ -701,6 +698,7 @@ static void __exit exit_dlmfs_fs(void) MODULE_AUTHOR("Oracle"); MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("OCFS2 DLM-Filesystem"); module_init(init_dlmfs_fs) module_exit(exit_dlmfs_fs) diff --git a/fs/ocfs2/dlmfs/dlmfsver.c b/fs/ocfs2/dlmfs/dlmfsver.c deleted file mode 100644 index a733b3321f83..000000000000 --- a/fs/ocfs2/dlmfs/dlmfsver.c +++ /dev/null @@ -1,42 +0,0 @@ -/* -*- mode: c; c-basic-offset: 8; -*- - * vim: noexpandtab sw=8 ts=8 sts=0: - * - * dlmfsver.c - * - * version string - * - * Copyright (C) 2002, 2005 Oracle. All rights reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 021110-1307, USA. - */ - -#include <linux/module.h> -#include <linux/kernel.h> - -#include "dlmfsver.h" - -#define DLM_BUILD_VERSION "1.5.0" - -#define VERSION_STR "OCFS2 DLMFS " DLM_BUILD_VERSION - -void dlmfs_print_version(void) -{ - printk(KERN_INFO "%s\n", VERSION_STR); -} - -MODULE_DESCRIPTION(VERSION_STR); - -MODULE_VERSION(DLM_BUILD_VERSION); diff --git a/fs/ocfs2/dlmfs/dlmfsver.h b/fs/ocfs2/dlmfs/dlmfsver.h deleted file mode 100644 index f35eadbed25c..000000000000 --- a/fs/ocfs2/dlmfs/dlmfsver.h +++ /dev/null @@ -1,31 +0,0 @@ -/* -*- mode: c; c-basic-offset: 8; -*- - * vim: noexpandtab sw=8 ts=8 sts=0: - * - * dlmver.h - * - * Function prototypes - * - * Copyright (C) 2005 Oracle. All rights reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 021110-1307, USA. - */ - -#ifndef DLMFS_VER_H -#define DLMFS_VER_H - -void dlmfs_print_version(void); - -#endif /* DLMFS_VER_H */ diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c index 3407b2c62b21..6bd690b5a061 100644 --- a/fs/ocfs2/dlmglue.c +++ b/fs/ocfs2/dlmglue.c @@ -2996,6 +2996,8 @@ int ocfs2_dlm_init(struct ocfs2_super *osb) /* for now, uuid == domain */ status = ocfs2_cluster_connect(osb->osb_cluster_stack, + osb->osb_cluster_name, + strlen(osb->osb_cluster_name), osb->uuid_str, strlen(osb->uuid_str), &lproto, ocfs2_do_node_down, osb, @@ -3005,7 +3007,7 @@ int ocfs2_dlm_init(struct ocfs2_super *osb) goto bail; } - status = ocfs2_cluster_this_node(&osb->node_num); + status = ocfs2_cluster_this_node(conn, &osb->node_num); if (status < 0) { mlog_errno(status); mlog(ML_ERROR, @@ -3142,22 +3144,60 @@ out: return 0; } +static void ocfs2_process_blocked_lock(struct ocfs2_super *osb, + struct ocfs2_lock_res *lockres); + /* Mark the lockres as being dropped. It will no longer be * queued if blocking, but we still may have to wait on it * being dequeued from the downconvert thread before we can consider * it safe to drop. * * You can *not* attempt to call cluster_lock on this lockres anymore. */ -void ocfs2_mark_lockres_freeing(struct ocfs2_lock_res *lockres) +void ocfs2_mark_lockres_freeing(struct ocfs2_super *osb, + struct ocfs2_lock_res *lockres) { int status; struct ocfs2_mask_waiter mw; - unsigned long flags; + unsigned long flags, flags2; ocfs2_init_mask_waiter(&mw); spin_lock_irqsave(&lockres->l_lock, flags); lockres->l_flags |= OCFS2_LOCK_FREEING; + if (lockres->l_flags & OCFS2_LOCK_QUEUED && current == osb->dc_task) { + /* + * We know the downconvert is queued but not in progress + * because we are the downconvert thread and processing + * different lock. So we can just remove the lock from the + * queue. This is not only an optimization but also a way + * to avoid the following deadlock: + * ocfs2_dentry_post_unlock() + * ocfs2_dentry_lock_put() + * ocfs2_drop_dentry_lock() + * iput() + * ocfs2_evict_inode() + * ocfs2_clear_inode() + * ocfs2_mark_lockres_freeing() + * ... blocks waiting for OCFS2_LOCK_QUEUED + * since we are the downconvert thread which + * should clear the flag. + */ + spin_unlock_irqrestore(&lockres->l_lock, flags); + spin_lock_irqsave(&osb->dc_task_lock, flags2); + list_del_init(&lockres->l_blocked_list); + osb->blocked_lock_count--; + spin_unlock_irqrestore(&osb->dc_task_lock, flags2); + /* + * Warn if we recurse into another post_unlock call. Strictly + * speaking it isn't a problem but we need to be careful if + * that happens (stack overflow, deadlocks, ...) so warn if + * ocfs2 grows a path for which this can happen. + */ + WARN_ON_ONCE(lockres->l_ops->post_unlock); + /* Since the lock is freeing we don't do much in the fn below */ + ocfs2_process_blocked_lock(osb, lockres); + return; + } while (lockres->l_flags & OCFS2_LOCK_QUEUED) { lockres_add_mask_waiter(lockres, &mw, OCFS2_LOCK_QUEUED, 0); spin_unlock_irqrestore(&lockres->l_lock, flags); @@ -3178,7 +3218,7 @@ void ocfs2_simple_drop_lockres(struct ocfs2_super *osb, { int ret; - ocfs2_mark_lockres_freeing(lockres); + ocfs2_mark_lockres_freeing(osb, lockres); ret = ocfs2_drop_lock(osb, lockres); if (ret) mlog_errno(ret); diff --git a/fs/ocfs2/dlmglue.h b/fs/ocfs2/dlmglue.h index 1d596d8c4a4a..d293a22c32c5 100644 --- a/fs/ocfs2/dlmglue.h +++ b/fs/ocfs2/dlmglue.h @@ -157,7 +157,8 @@ int ocfs2_refcount_lock(struct ocfs2_refcount_tree *ref_tree, int ex); void ocfs2_refcount_unlock(struct ocfs2_refcount_tree *ref_tree, int ex); -void ocfs2_mark_lockres_freeing(struct ocfs2_lock_res *lockres); +void ocfs2_mark_lockres_freeing(struct ocfs2_super *osb, + struct ocfs2_lock_res *lockres); void ocfs2_simple_drop_lockres(struct ocfs2_super *osb, struct ocfs2_lock_res *lockres); diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 6fff128cad16..ff33c5ef87f2 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -175,9 +175,13 @@ static int ocfs2_sync_file(struct file *file, loff_t start, loff_t end, int datasync) { int err = 0; - journal_t *journal; struct inode *inode = file->f_mapping->host; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); + struct ocfs2_inode_info *oi = OCFS2_I(inode); + journal_t *journal = osb->journal->j_journal; + int ret; + tid_t commit_tid; + bool needs_barrier = false; trace_ocfs2_sync_file(inode, file, file->f_path.dentry, OCFS2_I(inode)->ip_blkno, @@ -185,33 +189,26 @@ static int ocfs2_sync_file(struct file *file, loff_t start, loff_t end, file->f_path.dentry->d_name.name, (unsigned long long)datasync); + if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb)) + return -EROFS; + err = filemap_write_and_wait_range(inode->i_mapping, start, end); if (err) return err; - /* - * Probably don't need the i_mutex at all in here, just putting it here - * to be consistent with how fsync used to be called, someone more - * familiar with the fs could possibly remove it. - */ - mutex_lock(&inode->i_mutex); - if (datasync && !(inode->i_state & I_DIRTY_DATASYNC)) { - /* - * We still have to flush drive's caches to get data to the - * platter - */ - if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER) - blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL); - goto bail; + commit_tid = datasync ? oi->i_datasync_tid : oi->i_sync_tid; + if (journal->j_flags & JBD2_BARRIER && + !jbd2_trans_will_send_data_barrier(journal, commit_tid)) + needs_barrier = true; + err = jbd2_complete_transaction(journal, commit_tid); + if (needs_barrier) { + ret = blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL); + if (!err) + err = ret; } - journal = osb->journal->j_journal; - err = jbd2_journal_force_commit(journal); - -bail: if (err) mlog_errno(err); - mutex_unlock(&inode->i_mutex); return (err < 0) ? -EIO : 0; } @@ -289,6 +286,7 @@ int ocfs2_update_inode_atime(struct inode *inode, inode->i_atime = CURRENT_TIME; di->i_atime = cpu_to_le64(inode->i_atime.tv_sec); di->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); + ocfs2_update_inode_fsync_trans(handle, inode, 0); ocfs2_journal_dirty(handle, bh); out_commit: @@ -338,6 +336,7 @@ int ocfs2_simple_size_update(struct inode *inode, if (ret < 0) mlog_errno(ret); + ocfs2_update_inode_fsync_trans(handle, inode, 0); ocfs2_commit_trans(osb, handle); out: return ret; @@ -432,6 +431,7 @@ static int ocfs2_orphan_for_truncate(struct ocfs2_super *osb, di->i_size = cpu_to_le64(new_i_size); di->i_ctime = di->i_mtime = cpu_to_le64(inode->i_ctime.tv_sec); di->i_ctime_nsec = di->i_mtime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); + ocfs2_update_inode_fsync_trans(handle, inode, 0); ocfs2_journal_dirty(handle, fe_bh); @@ -474,11 +474,6 @@ static int ocfs2_truncate_file(struct inode *inode, goto bail; } - /* lets handle the simple truncate cases before doing any more - * cluster locking. */ - if (new_i_size == le64_to_cpu(fe->i_size)) - goto bail; - down_write(&OCFS2_I(inode)->ip_alloc_sem); ocfs2_resv_discard(&osb->osb_la_resmap, @@ -652,7 +647,7 @@ restarted_transaction: mlog_errno(status); goto leave; } - + ocfs2_update_inode_fsync_trans(handle, inode, 1); ocfs2_journal_dirty(handle, bh); spin_lock(&OCFS2_I(inode)->ip_lock); @@ -718,7 +713,8 @@ leave: * While a write will already be ordering the data, a truncate will not. * Thus, we need to explicitly order the zeroed pages. */ -static handle_t *ocfs2_zero_start_ordered_transaction(struct inode *inode) +static handle_t *ocfs2_zero_start_ordered_transaction(struct inode *inode, + struct buffer_head *di_bh) { struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); handle_t *handle = NULL; @@ -735,8 +731,16 @@ static handle_t *ocfs2_zero_start_ordered_transaction(struct inode *inode) } ret = ocfs2_jbd2_file_inode(handle, inode); - if (ret < 0) + if (ret < 0) { mlog_errno(ret); + goto out; + } + + ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh, + OCFS2_JOURNAL_ACCESS_WRITE); + if (ret) + mlog_errno(ret); + ocfs2_update_inode_fsync_trans(handle, inode, 1); out: if (ret) { @@ -751,7 +755,7 @@ out: * to be too fragile to do exactly what we need without us having to * worry about recursive locking in ->write_begin() and ->write_end(). */ static int ocfs2_write_zero_page(struct inode *inode, u64 abs_from, - u64 abs_to) + u64 abs_to, struct buffer_head *di_bh) { struct address_space *mapping = inode->i_mapping; struct page *page; @@ -759,6 +763,7 @@ static int ocfs2_write_zero_page(struct inode *inode, u64 abs_from, handle_t *handle = NULL; int ret = 0; unsigned zero_from, zero_to, block_start, block_end; + struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data; BUG_ON(abs_from >= abs_to); BUG_ON(abs_to > (((u64)index + 1) << PAGE_CACHE_SHIFT)); @@ -801,7 +806,8 @@ static int ocfs2_write_zero_page(struct inode *inode, u64 abs_from, } if (!handle) { - handle = ocfs2_zero_start_ordered_transaction(inode); + handle = ocfs2_zero_start_ordered_transaction(inode, + di_bh); if (IS_ERR(handle)) { ret = PTR_ERR(handle); handle = NULL; @@ -818,8 +824,23 @@ static int ocfs2_write_zero_page(struct inode *inode, u64 abs_from, ret = 0; } - if (handle) + if (handle) { + /* + * fs-writeback will release the dirty pages without page lock + * whose offset are over inode size, the release happens at + * block_write_full_page_endio(). + */ + i_size_write(inode, abs_to); + inode->i_blocks = ocfs2_inode_sector_count(inode); + di->i_size = cpu_to_le64((u64)i_size_read(inode)); + inode->i_mtime = inode->i_ctime = CURRENT_TIME; + di->i_mtime = di->i_ctime = cpu_to_le64(inode->i_mtime.tv_sec); + di->i_ctime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); + di->i_mtime_nsec = di->i_ctime_nsec; + ocfs2_journal_dirty(handle, di_bh); + ocfs2_update_inode_fsync_trans(handle, inode, 1); ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle); + } out_unlock: unlock_page(page); @@ -915,7 +936,7 @@ out: * has made sure that the entire range needs zeroing. */ static int ocfs2_zero_extend_range(struct inode *inode, u64 range_start, - u64 range_end) + u64 range_end, struct buffer_head *di_bh) { int rc = 0; u64 next_pos; @@ -931,7 +952,7 @@ static int ocfs2_zero_extend_range(struct inode *inode, u64 range_start, next_pos = (zero_pos & PAGE_CACHE_MASK) + PAGE_CACHE_SIZE; if (next_pos > range_end) next_pos = range_end; - rc = ocfs2_write_zero_page(inode, zero_pos, next_pos); + rc = ocfs2_write_zero_page(inode, zero_pos, next_pos, di_bh); if (rc < 0) { mlog_errno(rc); break; @@ -977,7 +998,7 @@ int ocfs2_zero_extend(struct inode *inode, struct buffer_head *di_bh, range_end = zero_to_size; ret = ocfs2_zero_extend_range(inode, range_start, - range_end); + range_end, di_bh); if (ret) { mlog_errno(ret); break; @@ -1145,14 +1166,14 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr) goto bail_unlock_rw; } - if (size_change && attr->ia_size != i_size_read(inode)) { + if (size_change) { status = inode_newsize_ok(inode, attr->ia_size); if (status) goto bail_unlock; inode_dio_wait(inode); - if (i_size_read(inode) > attr->ia_size) { + if (i_size_read(inode) >= attr->ia_size) { if (ocfs2_should_order_data(inode)) { status = ocfs2_begin_ordered_truncate(inode, attr->ia_size); @@ -1236,7 +1257,7 @@ bail: dqput(transfer_to[qtype]); if (!status && attr->ia_valid & ATTR_MODE) { - status = ocfs2_acl_chmod(inode); + status = posix_acl_chmod(inode, inode->i_mode); if (status < 0) mlog_errno(status); } @@ -1322,6 +1343,7 @@ static int __ocfs2_write_remove_suid(struct inode *inode, di = (struct ocfs2_dinode *) bh->b_data; di->i_mode = cpu_to_le16(inode->i_mode); + ocfs2_update_inode_fsync_trans(handle, inode, 0); ocfs2_journal_dirty(handle, bh); @@ -1554,6 +1576,7 @@ static int ocfs2_zero_partial_clusters(struct inode *inode, if (ret) mlog_errno(ret); } + ocfs2_update_inode_fsync_trans(handle, inode, 1); ocfs2_commit_trans(osb, handle); out: @@ -1869,7 +1892,8 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode, } size = sr->l_start + sr->l_len; - if (cmd == OCFS2_IOC_RESVSP || cmd == OCFS2_IOC_RESVSP64) { + if (cmd == OCFS2_IOC_RESVSP || cmd == OCFS2_IOC_RESVSP64 || + cmd == OCFS2_IOC_UNRESVSP || cmd == OCFS2_IOC_UNRESVSP64) { if (sr->l_len <= 0) { ret = -EINVAL; goto out_inode_unlock; @@ -2038,13 +2062,6 @@ out: return ret; } -static void ocfs2_aiodio_wait(struct inode *inode) -{ - wait_queue_head_t *wq = ocfs2_ioend_wq(inode); - - wait_event(*wq, (atomic_read(&OCFS2_I(inode)->ip_unaligned_aio) == 0)); -} - static int ocfs2_is_io_unaligned(struct inode *inode, size_t count, loff_t pos) { int blockmask = inode->i_sb->s_blocksize - 1; @@ -2322,10 +2339,8 @@ relock: * Wait on previous unaligned aio to complete before * proceeding. */ - ocfs2_aiodio_wait(inode); - - /* Mark the iocb as needing a decrement in ocfs2_dio_end_io */ - atomic_inc(&OCFS2_I(inode)->ip_unaligned_aio); + mutex_lock(&OCFS2_I(inode)->ip_unaligned_aio); + /* Mark the iocb as needing an unlock in ocfs2_dio_end_io */ ocfs2_iocb_set_unaligned_aio(iocb); } @@ -2370,8 +2385,8 @@ out_dio: if (((file->f_flags & O_DSYNC) && !direct_io) || IS_SYNC(inode) || ((file->f_flags & O_DIRECT) && !direct_io)) { - ret = filemap_fdatawrite_range(file->f_mapping, pos, - pos + count - 1); + ret = filemap_fdatawrite_range(file->f_mapping, *ppos, + *ppos + count - 1); if (ret < 0) written = ret; @@ -2384,8 +2399,8 @@ out_dio: } if (!ret) - ret = filemap_fdatawait_range(file->f_mapping, pos, - pos + count - 1); + ret = filemap_fdatawait_range(file->f_mapping, *ppos, + *ppos + count - 1); } /* @@ -2405,7 +2420,7 @@ out_dio: if (unaligned_dio) { ocfs2_iocb_clear_unaligned_aio(iocb); - atomic_dec(&OCFS2_I(inode)->ip_unaligned_aio); + mutex_unlock(&OCFS2_I(inode)->ip_unaligned_aio); } out: @@ -2622,7 +2637,16 @@ static loff_t ocfs2_file_llseek(struct file *file, loff_t offset, int whence) case SEEK_SET: break; case SEEK_END: - offset += inode->i_size; + /* SEEK_END requires the OCFS2 inode lock for the file + * because it references the file's size. + */ + ret = ocfs2_inode_lock(inode, NULL, 0); + if (ret < 0) { + mlog_errno(ret); + goto out; + } + offset += i_size_read(inode); + ocfs2_inode_unlock(inode, 0); break; case SEEK_CUR: if (offset == 0) { @@ -2661,6 +2685,7 @@ const struct inode_operations ocfs2_file_iops = { .removexattr = generic_removexattr, .fiemap = ocfs2_fiemap, .get_acl = ocfs2_iop_get_acl, + .set_acl = ocfs2_iop_set_acl, }; const struct inode_operations ocfs2_special_file_iops = { @@ -2668,6 +2693,7 @@ const struct inode_operations ocfs2_special_file_iops = { .getattr = ocfs2_getattr, .permission = ocfs2_permission, .get_acl = ocfs2_iop_get_acl, + .set_acl = ocfs2_iop_set_acl, }; /* diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c index f29a90fde619..437de7f768c6 100644 --- a/fs/ocfs2/inode.c +++ b/fs/ocfs2/inode.c @@ -130,6 +130,7 @@ struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags, struct inode *inode = NULL; struct super_block *sb = osb->sb; struct ocfs2_find_inode_args args; + journal_t *journal = OCFS2_SB(sb)->journal->j_journal; trace_ocfs2_iget_begin((unsigned long long)blkno, flags, sysfile_type); @@ -169,6 +170,32 @@ struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags, goto bail; } + /* + * Set transaction id's of transactions that have to be committed + * to finish f[data]sync. We set them to currently running transaction + * as we cannot be sure that the inode or some of its metadata isn't + * part of the transaction - the inode could have been reclaimed and + * now it is reread from disk. + */ + if (journal) { + transaction_t *transaction; + tid_t tid; + struct ocfs2_inode_info *oi = OCFS2_I(inode); + + read_lock(&journal->j_state_lock); + if (journal->j_running_transaction) + transaction = journal->j_running_transaction; + else + transaction = journal->j_committing_transaction; + if (transaction) + tid = transaction->t_tid; + else + tid = journal->j_commit_sequence; + read_unlock(&journal->j_state_lock); + oi->i_sync_tid = tid; + oi->i_datasync_tid = tid; + } + bail: if (!IS_ERR(inode)) { trace_ocfs2_iget_end(inode, @@ -804,11 +831,13 @@ static int ocfs2_inode_is_valid_to_delete(struct inode *inode) goto bail; } - /* If we're coming from downconvert_thread we can't go into our own - * voting [hello, deadlock city!], so unforuntately we just - * have to skip deleting this guy. That's OK though because - * the node who's doing the actual deleting should handle it - * anyway. */ + /* + * If we're coming from downconvert_thread we can't go into our own + * voting [hello, deadlock city!] so we cannot delete the inode. But + * since we dropped last inode ref when downconverting dentry lock, + * we cannot have the file open and thus the node doing unlink will + * take care of deleting the inode. + */ if (current == osb->dc_task) goto bail; @@ -822,12 +851,6 @@ static int ocfs2_inode_is_valid_to_delete(struct inode *inode) goto bail_unlock; } - /* If we have allowd wipe of this inode for another node, it - * will be marked here so we can safely skip it. Recovery will - * cleanup any inodes we might inadvertently skip here. */ - if (oi->ip_flags & OCFS2_INODE_SKIP_DELETE) - goto bail_unlock; - ret = 1; bail_unlock: spin_unlock(&oi->ip_lock); @@ -941,7 +964,7 @@ static void ocfs2_cleanup_delete_inode(struct inode *inode, (unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data); if (sync_data) filemap_write_and_wait(inode->i_mapping); - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); } static void ocfs2_delete_inode(struct inode *inode) @@ -960,8 +983,6 @@ static void ocfs2_delete_inode(struct inode *inode) if (is_bad_inode(inode) || !OCFS2_I(inode)->ip_blkno) goto bail; - dquot_initialize(inode); - if (!ocfs2_inode_is_valid_to_delete(inode)) { /* It's probably not necessary to truncate_inode_pages * here but we do it for safety anyway (it will most @@ -970,6 +991,8 @@ static void ocfs2_delete_inode(struct inode *inode) goto bail; } + dquot_initialize(inode); + /* We want to block signals in delete_inode as the lock and * messaging paths may return us -ERESTARTSYS. Which would * cause us to exit early, resulting in inodes being orphaned @@ -1057,6 +1080,7 @@ static void ocfs2_clear_inode(struct inode *inode) { int status; struct ocfs2_inode_info *oi = OCFS2_I(inode); + struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); clear_inode(inode); trace_ocfs2_clear_inode((unsigned long long)oi->ip_blkno, @@ -1073,9 +1097,9 @@ static void ocfs2_clear_inode(struct inode *inode) /* Do these before all the other work so that we don't bounce * the downconvert thread while waiting to destroy the locks. */ - ocfs2_mark_lockres_freeing(&oi->ip_rw_lockres); - ocfs2_mark_lockres_freeing(&oi->ip_inode_lockres); - ocfs2_mark_lockres_freeing(&oi->ip_open_lockres); + ocfs2_mark_lockres_freeing(osb, &oi->ip_rw_lockres); + ocfs2_mark_lockres_freeing(osb, &oi->ip_inode_lockres); + ocfs2_mark_lockres_freeing(osb, &oi->ip_open_lockres); ocfs2_resv_discard(&OCFS2_SB(inode->i_sb)->osb_la_resmap, &oi->ip_la_data_resv); @@ -1157,7 +1181,7 @@ void ocfs2_evict_inode(struct inode *inode) (OCFS2_I(inode)->ip_flags & OCFS2_INODE_MAYBE_ORPHANED)) { ocfs2_delete_inode(inode); } else { - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); } ocfs2_clear_inode(inode); } @@ -1260,6 +1284,7 @@ int ocfs2_mark_inode_dirty(handle_t *handle, fe->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); ocfs2_journal_dirty(handle, bh); + ocfs2_update_inode_fsync_trans(handle, inode, 1); leave: return status; } diff --git a/fs/ocfs2/inode.h b/fs/ocfs2/inode.h index 621fc73bf23d..a6c991c0fc98 100644 --- a/fs/ocfs2/inode.h +++ b/fs/ocfs2/inode.h @@ -44,7 +44,7 @@ struct ocfs2_inode_info struct rw_semaphore ip_xattr_sem; /* Number of outstanding AIO's which are not page aligned */ - atomic_t ip_unaligned_aio; + struct mutex ip_unaligned_aio; /* These fields are protected by ip_lock */ spinlock_t ip_lock; @@ -73,6 +73,13 @@ struct ocfs2_inode_info u32 ip_dir_lock_gen; struct ocfs2_alloc_reservation ip_la_data_resv; + + /* + * Transactions that contain inode's metadata needed to complete + * fsync and fdatasync, respectively. + */ + tid_t i_sync_tid; + tid_t i_datasync_tid; }; /* @@ -84,8 +91,6 @@ struct ocfs2_inode_info #define OCFS2_INODE_BITMAP 0x00000004 /* This inode has been wiped from disk */ #define OCFS2_INODE_DELETED 0x00000008 -/* Another node is deleting, so our delete is a nop */ -#define OCFS2_INODE_SKIP_DELETE 0x00000010 /* Has the inode been orphaned on another node? * * This hints to ocfs2_drop_inode that it should clear i_nlink before @@ -100,11 +105,11 @@ struct ocfs2_inode_info * rely on ocfs2_delete_inode to sort things out under the proper * cluster locks. */ -#define OCFS2_INODE_MAYBE_ORPHANED 0x00000020 +#define OCFS2_INODE_MAYBE_ORPHANED 0x00000010 /* Does someone have the file open O_DIRECT */ -#define OCFS2_INODE_OPEN_DIRECT 0x00000040 +#define OCFS2_INODE_OPEN_DIRECT 0x00000020 /* Tell the inode wipe code it's not in orphan dir */ -#define OCFS2_INODE_SKIP_ORPHAN_DIR 0x00000080 +#define OCFS2_INODE_SKIP_ORPHAN_DIR 0x00000040 static inline struct ocfs2_inode_info *OCFS2_I(struct inode *inode) { diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c index fa32ce9b455d..490229f43731 100644 --- a/fs/ocfs2/ioctl.c +++ b/fs/ocfs2/ioctl.c @@ -7,6 +7,7 @@ #include <linux/fs.h> #include <linux/mount.h> +#include <linux/blkdev.h> #include <linux/compat.h> #include <cluster/masklog.h> @@ -412,11 +413,12 @@ int ocfs2_info_handle_freeinode(struct inode *inode, } status = ocfs2_info_scan_inode_alloc(osb, inode_alloc, blkno, oifi, i); - if (status < 0) - goto bail; iput(inode_alloc); inode_alloc = NULL; + + if (status < 0) + goto bail; } o2info_set_request_filled(&oifi->ifi_req); @@ -966,15 +968,21 @@ long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) case FITRIM: { struct super_block *sb = inode->i_sb; + struct request_queue *q = bdev_get_queue(sb->s_bdev); struct fstrim_range range; int ret = 0; if (!capable(CAP_SYS_ADMIN)) return -EPERM; + if (!blk_queue_discard(q)) + return -EOPNOTSUPP; + if (copy_from_user(&range, argp, sizeof(range))) return -EFAULT; + range.minlen = max_t(u64, q->limits.discard_granularity, + range.minlen); ret = ocfs2_trim_fs(sb, &range); if (ret < 0) return ret; diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c index 44fc3e530c3d..03ea9314fecd 100644 --- a/fs/ocfs2/journal.c +++ b/fs/ocfs2/journal.c @@ -2132,12 +2132,6 @@ static int ocfs2_recover_orphans(struct ocfs2_super *osb, iter = oi->ip_next_orphan; spin_lock(&oi->ip_lock); - /* The remote delete code may have set these on the - * assumption that the other node would wipe them - * successfully. If they are still in the node's - * orphan dir, we need to reset that state. */ - oi->ip_flags &= ~(OCFS2_INODE_DELETED|OCFS2_INODE_SKIP_DELETE); - /* Set the proper information to get us going into * ocfs2_delete_inode. */ oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED; diff --git a/fs/ocfs2/journal.h b/fs/ocfs2/journal.h index 9ff4e8cf9d97..7f8cde94abfe 100644 --- a/fs/ocfs2/journal.h +++ b/fs/ocfs2/journal.h @@ -626,4 +626,15 @@ static inline int ocfs2_begin_ordered_truncate(struct inode *inode, new_size); } +static inline void ocfs2_update_inode_fsync_trans(handle_t *handle, + struct inode *inode, + int datasync) +{ + struct ocfs2_inode_info *oi = OCFS2_I(inode); + + oi->i_sync_tid = handle->h_transaction->t_tid; + if (datasync) + oi->i_datasync_tid = handle->h_transaction->t_tid; +} + #endif /* OCFS2_JOURNAL_H */ diff --git a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c index cd5496b7a0a3..044013455621 100644 --- a/fs/ocfs2/localalloc.c +++ b/fs/ocfs2/localalloc.c @@ -781,6 +781,48 @@ bail: return status; } +int ocfs2_free_local_alloc_bits(struct ocfs2_super *osb, + handle_t *handle, + struct ocfs2_alloc_context *ac, + u32 bit_off, + u32 num_bits) +{ + int status, start; + u32 clear_bits; + struct inode *local_alloc_inode; + void *bitmap; + struct ocfs2_dinode *alloc; + struct ocfs2_local_alloc *la; + + BUG_ON(ac->ac_which != OCFS2_AC_USE_LOCAL); + + local_alloc_inode = ac->ac_inode; + alloc = (struct ocfs2_dinode *) osb->local_alloc_bh->b_data; + la = OCFS2_LOCAL_ALLOC(alloc); + + bitmap = la->la_bitmap; + start = bit_off - le32_to_cpu(la->la_bm_off); + clear_bits = num_bits; + + status = ocfs2_journal_access_di(handle, + INODE_CACHE(local_alloc_inode), + osb->local_alloc_bh, + OCFS2_JOURNAL_ACCESS_WRITE); + if (status < 0) { + mlog_errno(status); + goto bail; + } + + while (clear_bits--) + ocfs2_clear_bit(start++, bitmap); + + le32_add_cpu(&alloc->id1.bitmap1.i_used, -num_bits); + ocfs2_journal_dirty(handle, osb->local_alloc_bh); + +bail: + return status; +} + static u32 ocfs2_local_alloc_count_bits(struct ocfs2_dinode *alloc) { u32 count; diff --git a/fs/ocfs2/localalloc.h b/fs/ocfs2/localalloc.h index 1be9b5864460..44a7d1fb2dec 100644 --- a/fs/ocfs2/localalloc.h +++ b/fs/ocfs2/localalloc.h @@ -55,6 +55,12 @@ int ocfs2_claim_local_alloc_bits(struct ocfs2_super *osb, u32 *bit_off, u32 *num_bits); +int ocfs2_free_local_alloc_bits(struct ocfs2_super *osb, + handle_t *handle, + struct ocfs2_alloc_context *ac, + u32 bit_off, + u32 num_bits); + void ocfs2_local_alloc_seen_free_bits(struct ocfs2_super *osb, unsigned int num_clusters); void ocfs2_la_enable_worker(struct work_struct *work); diff --git a/fs/ocfs2/locks.c b/fs/ocfs2/locks.c index e57c804069ea..6b6d092b0998 100644 --- a/fs/ocfs2/locks.c +++ b/fs/ocfs2/locks.c @@ -82,6 +82,8 @@ static int ocfs2_do_flock(struct file *file, struct inode *inode, } ret = flock_lock_file_wait(file, fl); + if (ret) + ocfs2_file_unlock(file); out: mutex_unlock(&fp->fp_mutex); diff --git a/fs/ocfs2/move_extents.c b/fs/ocfs2/move_extents.c index 631a98213474..599eb4c4c8be 100644 --- a/fs/ocfs2/move_extents.c +++ b/fs/ocfs2/move_extents.c @@ -151,6 +151,7 @@ static int __ocfs2_move_extent(handle_t *handle, old_blkno, len); } + ocfs2_update_inode_fsync_trans(handle, inode, 0); out: ocfs2_free_path(path); return ret; @@ -561,83 +562,6 @@ static void ocfs2_probe_alloc_group(struct inode *inode, struct buffer_head *bh, mlog(0, "found phys_cpos: %u to fit the wanted moving.\n", *phys_cpos); } -static int ocfs2_alloc_dinode_update_counts(struct inode *inode, - handle_t *handle, - struct buffer_head *di_bh, - u32 num_bits, - u16 chain) -{ - int ret; - u32 tmp_used; - struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; - struct ocfs2_chain_list *cl = - (struct ocfs2_chain_list *) &di->id2.i_chain; - - ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh, - OCFS2_JOURNAL_ACCESS_WRITE); - if (ret < 0) { - mlog_errno(ret); - goto out; - } - - tmp_used = le32_to_cpu(di->id1.bitmap1.i_used); - di->id1.bitmap1.i_used = cpu_to_le32(num_bits + tmp_used); - le32_add_cpu(&cl->cl_recs[chain].c_free, -num_bits); - ocfs2_journal_dirty(handle, di_bh); - -out: - return ret; -} - -static inline int ocfs2_block_group_set_bits(handle_t *handle, - struct inode *alloc_inode, - struct ocfs2_group_desc *bg, - struct buffer_head *group_bh, - unsigned int bit_off, - unsigned int num_bits) -{ - int status; - void *bitmap = bg->bg_bitmap; - int journal_type = OCFS2_JOURNAL_ACCESS_WRITE; - - /* All callers get the descriptor via - * ocfs2_read_group_descriptor(). Any corruption is a code bug. */ - BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(bg)); - BUG_ON(le16_to_cpu(bg->bg_free_bits_count) < num_bits); - - mlog(0, "block_group_set_bits: off = %u, num = %u\n", bit_off, - num_bits); - - if (ocfs2_is_cluster_bitmap(alloc_inode)) - journal_type = OCFS2_JOURNAL_ACCESS_UNDO; - - status = ocfs2_journal_access_gd(handle, - INODE_CACHE(alloc_inode), - group_bh, - journal_type); - if (status < 0) { - mlog_errno(status); - goto bail; - } - - le16_add_cpu(&bg->bg_free_bits_count, -num_bits); - if (le16_to_cpu(bg->bg_free_bits_count) > le16_to_cpu(bg->bg_bits)) { - ocfs2_error(alloc_inode->i_sb, "Group descriptor # %llu has bit" - " count %u but claims %u are freed. num_bits %d", - (unsigned long long)le64_to_cpu(bg->bg_blkno), - le16_to_cpu(bg->bg_bits), - le16_to_cpu(bg->bg_free_bits_count), num_bits); - return -EROFS; - } - while (num_bits--) - ocfs2_set_bit(bit_off++, bitmap); - - ocfs2_journal_dirty(handle, group_bh); - -bail: - return status; -} - static int ocfs2_move_extent(struct ocfs2_move_extents_context *context, u32 cpos, u32 phys_cpos, u32 *new_phys_cpos, u32 len, int ext_flags) @@ -767,8 +691,11 @@ static int ocfs2_move_extent(struct ocfs2_move_extents_context *context, ret = ocfs2_block_group_set_bits(handle, gb_inode, gd, gd_bh, goal_bit, len); - if (ret) + if (ret) { + ocfs2_rollback_alloc_dinode_counts(gb_inode, gb_bh, len, + le16_to_cpu(gd->bg_chain)); mlog_errno(ret); + } /* * Here we should write the new page out first if we are @@ -1034,6 +961,7 @@ static int ocfs2_move_extents(struct ocfs2_move_extents_context *context) inode->i_ctime = CURRENT_TIME; di->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); di->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); + ocfs2_update_inode_fsync_trans(handle, inode, 0); ocfs2_journal_dirty(handle, di_bh); diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c index 4f791f6d27d0..2060fc398445 100644 --- a/fs/ocfs2/namei.c +++ b/fs/ocfs2/namei.c @@ -230,6 +230,7 @@ static int ocfs2_mknod(struct inode *dir, struct ocfs2_dir_lookup_result lookup = { NULL, }; sigset_t oldset; int did_block_signals = 0; + struct posix_acl *default_acl = NULL, *acl = NULL; trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name, (unsigned long long)OCFS2_I(dir)->ip_blkno, @@ -331,6 +332,12 @@ static int ocfs2_mknod(struct inode *dir, goto leave; } + status = posix_acl_create(dir, &mode, &default_acl, &acl); + if (status) { + mlog_errno(status); + goto leave; + } + handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, S_ISDIR(mode), xattr_credits)); @@ -379,8 +386,17 @@ static int ocfs2_mknod(struct inode *dir, inc_nlink(dir); } - status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, - meta_ac, data_ac); + if (default_acl) { + status = ocfs2_set_acl(handle, inode, new_fe_bh, + ACL_TYPE_DEFAULT, default_acl, + meta_ac, data_ac); + } + if (!status && acl) { + status = ocfs2_set_acl(handle, inode, new_fe_bh, + ACL_TYPE_ACCESS, acl, + meta_ac, data_ac); + } + if (status < 0) { mlog_errno(status); goto leave; @@ -419,6 +435,10 @@ static int ocfs2_mknod(struct inode *dir, d_instantiate(dentry, inode); status = 0; leave: + if (default_acl) + posix_acl_release(default_acl); + if (acl) + posix_acl_release(acl); if (status < 0 && did_quota_inode) dquot_free_inode(inode); if (handle) @@ -430,7 +450,6 @@ leave: brelse(new_fe_bh); brelse(parent_fe_bh); - kfree(si.name); kfree(si.value); ocfs2_free_dir_lookup_result(&lookup); @@ -475,6 +494,7 @@ static int __ocfs2_mknod_locked(struct inode *dir, struct ocfs2_dinode *fe = NULL; struct ocfs2_extent_list *fel; u16 feat; + struct ocfs2_inode_info *oi = OCFS2_I(inode); *new_fe_bh = NULL; @@ -556,8 +576,8 @@ static int __ocfs2_mknod_locked(struct inode *dir, mlog_errno(status); } - status = 0; /* error in ocfs2_create_new_inode_locks is not - * critical */ + oi->i_sync_tid = handle->h_transaction->t_tid; + oi->i_datasync_tid = handle->h_transaction->t_tid; leave: if (status < 0) { @@ -644,6 +664,7 @@ static int ocfs2_link(struct dentry *old_dentry, struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); struct ocfs2_dir_lookup_result lookup = { NULL, }; sigset_t oldset; + u64 old_de_ino; trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno, old_dentry->d_name.len, old_dentry->d_name.name, @@ -666,6 +687,22 @@ static int ocfs2_link(struct dentry *old_dentry, goto out; } + err = ocfs2_lookup_ino_from_name(dir, old_dentry->d_name.name, + old_dentry->d_name.len, &old_de_ino); + if (err) { + err = -ENOENT; + goto out; + } + + /* + * Check whether another node removed the source inode while we + * were in the vfs. + */ + if (old_de_ino != OCFS2_I(inode)->ip_blkno) { + err = -ENOENT; + goto out; + } + err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, dentry->d_name.len); if (err) @@ -948,7 +985,7 @@ leave: ocfs2_free_dir_lookup_result(&orphan_insert); ocfs2_free_dir_lookup_result(&lookup); - if (status && (status != -ENOTEMPTY)) + if (status && (status != -ENOTEMPTY) && (status != -ENOENT)) mlog_errno(status); return status; @@ -1818,7 +1855,6 @@ bail: brelse(new_fe_bh); brelse(parent_fe_bh); - kfree(si.name); kfree(si.value); ocfs2_free_dir_lookup_result(&lookup); if (inode_ac) @@ -2444,6 +2480,7 @@ int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, di->i_orphaned_slot = 0; set_nlink(inode, 1); ocfs2_set_links_count(di, inode->i_nlink); + ocfs2_update_inode_fsync_trans(handle, inode, 1); ocfs2_journal_dirty(handle, di_bh); status = ocfs2_add_entry(handle, dentry, inode, @@ -2504,4 +2541,5 @@ const struct inode_operations ocfs2_dir_iops = { .removexattr = generic_removexattr, .fiemap = ocfs2_fiemap, .get_acl = ocfs2_iop_get_acl, + .set_acl = ocfs2_iop_set_acl, }; diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h index 3a903470c794..8d64a97a9d5e 100644 --- a/fs/ocfs2/ocfs2.h +++ b/fs/ocfs2/ocfs2.h @@ -30,6 +30,7 @@ #include <linux/sched.h> #include <linux/wait.h> #include <linux/list.h> +#include <linux/llist.h> #include <linux/rbtree.h> #include <linux/workqueue.h> #include <linux/kref.h> @@ -274,19 +275,16 @@ enum ocfs2_mount_options OCFS2_MOUNT_HB_GLOBAL = 1 << 14, /* Global heartbeat */ }; -#define OCFS2_OSB_SOFT_RO 0x0001 -#define OCFS2_OSB_HARD_RO 0x0002 -#define OCFS2_OSB_ERROR_FS 0x0004 -#define OCFS2_OSB_DROP_DENTRY_LOCK_IMMED 0x0008 - -#define OCFS2_DEFAULT_ATIME_QUANTUM 60 +#define OCFS2_OSB_SOFT_RO 0x0001 +#define OCFS2_OSB_HARD_RO 0x0002 +#define OCFS2_OSB_ERROR_FS 0x0004 +#define OCFS2_DEFAULT_ATIME_QUANTUM 60 struct ocfs2_journal; struct ocfs2_slot_info; struct ocfs2_recovery_map; struct ocfs2_replay_map; struct ocfs2_quota_recovery; -struct ocfs2_dentry_lock; struct ocfs2_super { struct task_struct *commit_task; @@ -387,6 +385,7 @@ struct ocfs2_super u8 osb_stackflags; char osb_cluster_stack[OCFS2_STACK_LABEL_LEN + 1]; + char osb_cluster_name[OCFS2_CLUSTER_NAME_LEN + 1]; struct ocfs2_cluster_connection *cconn; struct ocfs2_lock_res osb_super_lockres; struct ocfs2_lock_res osb_rename_lockres; @@ -413,10 +412,9 @@ struct ocfs2_super struct list_head blocked_lock_list; unsigned long blocked_lock_count; - /* List of dentry locks to release. Anyone can add locks to - * the list, ocfs2_wq processes the list */ - struct ocfs2_dentry_lock *dentry_lock_list; - struct work_struct dentry_lock_work; + /* List of dquot structures to drop last reference to */ + struct llist_head dquot_drop_list; + struct work_struct dquot_drop_work; wait_queue_head_t osb_mount_event; @@ -448,6 +446,8 @@ struct ocfs2_super /* rb tree root for refcount lock. */ struct rb_root osb_rf_lock_tree; struct ocfs2_refcount_tree *osb_ref_tree_lru; + + struct mutex system_file_mutex; }; #define OCFS2_SB(sb) ((struct ocfs2_super *)(sb)->s_fs_info) @@ -578,18 +578,6 @@ static inline void ocfs2_set_osb_flag(struct ocfs2_super *osb, spin_unlock(&osb->osb_lock); } - -static inline unsigned long ocfs2_test_osb_flag(struct ocfs2_super *osb, - unsigned long flag) -{ - unsigned long ret; - - spin_lock(&osb->osb_lock); - ret = osb->osb_flags & flag; - spin_unlock(&osb->osb_lock); - return ret; -} - static inline void ocfs2_set_ro_flag(struct ocfs2_super *osb, int hard) { diff --git a/fs/ocfs2/quota.h b/fs/ocfs2/quota.h index d5ab56cbe5c5..f266d67df3c6 100644 --- a/fs/ocfs2/quota.h +++ b/fs/ocfs2/quota.h @@ -28,6 +28,7 @@ struct ocfs2_dquot { unsigned int dq_use_count; /* Number of nodes having reference to this entry in global quota file */ s64 dq_origspace; /* Last globally synced space usage */ s64 dq_originodes; /* Last globally synced inode usage */ + struct llist_node list; /* Member of list of dquots to drop */ }; /* Description of one chunk to recover in memory */ @@ -110,6 +111,7 @@ int ocfs2_read_quota_phys_block(struct inode *inode, u64 p_block, int ocfs2_create_local_dquot(struct dquot *dquot); int ocfs2_local_release_dquot(handle_t *handle, struct dquot *dquot); int ocfs2_local_write_dquot(struct dquot *dquot); +void ocfs2_drop_dquot_refs(struct work_struct *work); extern const struct dquot_operations ocfs2_quota_operations; extern struct quota_format_type ocfs2_quota_format; diff --git a/fs/ocfs2/quota_global.c b/fs/ocfs2/quota_global.c index aaa50611ec66..b990a62cff50 100644 --- a/fs/ocfs2/quota_global.c +++ b/fs/ocfs2/quota_global.c @@ -10,6 +10,7 @@ #include <linux/jiffies.h> #include <linux/writeback.h> #include <linux/workqueue.h> +#include <linux/llist.h> #include <cluster/masklog.h> @@ -679,6 +680,27 @@ static int ocfs2_calc_qdel_credits(struct super_block *sb, int type) OCFS2_INODE_UPDATE_CREDITS; } +void ocfs2_drop_dquot_refs(struct work_struct *work) +{ + struct ocfs2_super *osb = container_of(work, struct ocfs2_super, + dquot_drop_work); + struct llist_node *list; + struct ocfs2_dquot *odquot, *next_odquot; + + list = llist_del_all(&osb->dquot_drop_list); + llist_for_each_entry_safe(odquot, next_odquot, list, list) { + /* Drop the reference we acquired in ocfs2_dquot_release() */ + dqput(&odquot->dq_dquot); + } +} + +/* + * Called when the last reference to dquot is dropped. If we are called from + * downconvert thread, we cannot do all the handling here because grabbing + * quota lock could deadlock (the node holding the quota lock could need some + * other cluster lock to proceed but with blocked downconvert thread we cannot + * release any lock). + */ static int ocfs2_release_dquot(struct dquot *dquot) { handle_t *handle; @@ -694,6 +716,19 @@ static int ocfs2_release_dquot(struct dquot *dquot) /* Check whether we are not racing with some other dqget() */ if (atomic_read(&dquot->dq_count) > 1) goto out; + /* Running from downconvert thread? Postpone quota processing to wq */ + if (current == osb->dc_task) { + /* + * Grab our own reference to dquot and queue it for delayed + * dropping. Quota code rechecks after calling + * ->release_dquot() and won't free dquot structure. + */ + dqgrab(dquot); + /* First entry on list -> queue work */ + if (llist_add(&OCFS2_DQUOT(dquot)->list, &osb->dquot_drop_list)) + queue_work(ocfs2_wq, &osb->dquot_drop_work); + goto out; + } status = ocfs2_lock_global_qf(oinfo, 1); if (status < 0) goto out; @@ -717,6 +752,12 @@ static int ocfs2_release_dquot(struct dquot *dquot) */ if (status < 0) mlog_errno(status); + /* + * Clear dq_off so that we search for the structure in quota file next + * time we acquire it. The structure might be deleted and reallocated + * elsewhere by another node while our dquot structure is on freelist. + */ + dquot->dq_off = 0; clear_bit(DQ_ACTIVE_B, &dquot->dq_flags); out_trans: ocfs2_commit_trans(osb, handle); @@ -756,16 +797,17 @@ static int ocfs2_acquire_dquot(struct dquot *dquot) status = ocfs2_lock_global_qf(info, 1); if (status < 0) goto out; - if (!test_bit(DQ_READ_B, &dquot->dq_flags)) { - status = ocfs2_qinfo_lock(info, 0); - if (status < 0) - goto out_dq; - status = qtree_read_dquot(&info->dqi_gi, dquot); - ocfs2_qinfo_unlock(info, 0); - if (status < 0) - goto out_dq; - } - set_bit(DQ_READ_B, &dquot->dq_flags); + status = ocfs2_qinfo_lock(info, 0); + if (status < 0) + goto out_dq; + /* + * We always want to read dquot structure from disk because we don't + * know what happened with it while it was on freelist. + */ + status = qtree_read_dquot(&info->dqi_gi, dquot); + ocfs2_qinfo_unlock(info, 0); + if (status < 0) + goto out_dq; OCFS2_DQUOT(dquot)->dq_use_count++; OCFS2_DQUOT(dquot)->dq_origspace = dquot->dq_dqb.dqb_curspace; diff --git a/fs/ocfs2/quota_local.c b/fs/ocfs2/quota_local.c index 2e4344be3b96..2001862bf2b1 100644 --- a/fs/ocfs2/quota_local.c +++ b/fs/ocfs2/quota_local.c @@ -1303,10 +1303,6 @@ int ocfs2_local_release_dquot(handle_t *handle, struct dquot *dquot) ocfs2_journal_dirty(handle, od->dq_chunk->qc_headerbh); out: - /* Clear the read bit so that next time someone uses this - * dquot he reads fresh info from disk and allocates local - * dquot structure */ - clear_bit(DQ_READ_B, &dquot->dq_flags); return status; } diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c index 55767e1ba724..6ba4bcbc4796 100644 --- a/fs/ocfs2/refcounttree.c +++ b/fs/ocfs2/refcounttree.c @@ -46,6 +46,7 @@ #include <linux/quotaops.h> #include <linux/namei.h> #include <linux/mount.h> +#include <linux/posix_acl.h> struct ocfs2_cow_context { struct inode *inode; @@ -4268,11 +4269,20 @@ static int ocfs2_reflink(struct dentry *old_dentry, struct inode *dir, struct inode *inode = old_dentry->d_inode; struct buffer_head *old_bh = NULL; struct inode *new_orphan_inode = NULL; + struct posix_acl *default_acl, *acl; + umode_t mode; if (!ocfs2_refcount_tree(OCFS2_SB(inode->i_sb))) return -EOPNOTSUPP; - error = ocfs2_create_inode_in_orphan(dir, inode->i_mode, + mode = inode->i_mode; + error = posix_acl_create(dir, &mode, &default_acl, &acl); + if (error) { + mlog_errno(error); + goto out; + } + + error = ocfs2_create_inode_in_orphan(dir, mode, &new_orphan_inode); if (error) { mlog_errno(error); @@ -4303,11 +4313,16 @@ static int ocfs2_reflink(struct dentry *old_dentry, struct inode *dir, /* If the security isn't preserved, we need to re-initialize them. */ if (!preserve) { error = ocfs2_init_security_and_acl(dir, new_orphan_inode, - &new_dentry->d_name); + &new_dentry->d_name, + default_acl, acl); if (error) mlog_errno(error); } out: + if (default_acl) + posix_acl_release(default_acl); + if (acl) + posix_acl_release(acl); if (!error) { error = ocfs2_mv_orphaned_inode_to_new(dir, new_orphan_inode, new_dentry); diff --git a/fs/ocfs2/stack_o2cb.c b/fs/ocfs2/stack_o2cb.c index bf1f8930456f..1724d43d3da1 100644 --- a/fs/ocfs2/stack_o2cb.c +++ b/fs/ocfs2/stack_o2cb.c @@ -398,7 +398,8 @@ static int o2cb_cluster_disconnect(struct ocfs2_cluster_connection *conn) return 0; } -static int o2cb_cluster_this_node(unsigned int *node) +static int o2cb_cluster_this_node(struct ocfs2_cluster_connection *conn, + unsigned int *node) { int node_num; diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c index 286edf1e231f..13a8537d8e8b 100644 --- a/fs/ocfs2/stack_user.c +++ b/fs/ocfs2/stack_user.c @@ -23,6 +23,7 @@ #include <linux/mutex.h> #include <linux/slab.h> #include <linux/reboot.h> +#include <linux/sched.h> #include <asm/uaccess.h> #include "stackglue.h" @@ -102,6 +103,12 @@ #define OCFS2_TEXT_UUID_LEN 32 #define OCFS2_CONTROL_MESSAGE_VERNUM_LEN 2 #define OCFS2_CONTROL_MESSAGE_NODENUM_LEN 8 +#define VERSION_LOCK "version_lock" + +enum ocfs2_connection_type { + WITH_CONTROLD, + NO_CONTROLD +}; /* * ocfs2_live_connection is refcounted because the filesystem and @@ -110,6 +117,13 @@ struct ocfs2_live_connection { struct list_head oc_list; struct ocfs2_cluster_connection *oc_conn; + enum ocfs2_connection_type oc_type; + atomic_t oc_this_node; + int oc_our_slot; + struct dlm_lksb oc_version_lksb; + char oc_lvb[DLM_LVB_LEN]; + struct completion oc_sync_wait; + wait_queue_head_t oc_wait; }; struct ocfs2_control_private { @@ -198,20 +212,15 @@ static struct ocfs2_live_connection *ocfs2_connection_find(const char *name) * mount path. Since the VFS prevents multiple calls to * fill_super(), we can't get dupes here. */ -static int ocfs2_live_connection_new(struct ocfs2_cluster_connection *conn, - struct ocfs2_live_connection **c_ret) +static int ocfs2_live_connection_attach(struct ocfs2_cluster_connection *conn, + struct ocfs2_live_connection *c) { int rc = 0; - struct ocfs2_live_connection *c; - - c = kzalloc(sizeof(struct ocfs2_live_connection), GFP_KERNEL); - if (!c) - return -ENOMEM; mutex_lock(&ocfs2_control_lock); c->oc_conn = conn; - if (atomic_read(&ocfs2_control_opened)) + if ((c->oc_type == NO_CONTROLD) || atomic_read(&ocfs2_control_opened)) list_add(&c->oc_list, &ocfs2_live_connection_list); else { printk(KERN_ERR @@ -220,12 +229,6 @@ static int ocfs2_live_connection_new(struct ocfs2_cluster_connection *conn, } mutex_unlock(&ocfs2_control_lock); - - if (!rc) - *c_ret = c; - else - kfree(c); - return rc; } @@ -799,18 +802,251 @@ static int fs_protocol_compare(struct ocfs2_protocol_version *existing, return 0; } +static void lvb_to_version(char *lvb, struct ocfs2_protocol_version *ver) +{ + struct ocfs2_protocol_version *pv = + (struct ocfs2_protocol_version *)lvb; + /* + * ocfs2_protocol_version has two u8 variables, so we don't + * need any endian conversion. + */ + ver->pv_major = pv->pv_major; + ver->pv_minor = pv->pv_minor; +} + +static void version_to_lvb(struct ocfs2_protocol_version *ver, char *lvb) +{ + struct ocfs2_protocol_version *pv = + (struct ocfs2_protocol_version *)lvb; + /* + * ocfs2_protocol_version has two u8 variables, so we don't + * need any endian conversion. + */ + pv->pv_major = ver->pv_major; + pv->pv_minor = ver->pv_minor; +} + +static void sync_wait_cb(void *arg) +{ + struct ocfs2_cluster_connection *conn = arg; + struct ocfs2_live_connection *lc = conn->cc_private; + complete(&lc->oc_sync_wait); +} + +static int sync_unlock(struct ocfs2_cluster_connection *conn, + struct dlm_lksb *lksb, char *name) +{ + int error; + struct ocfs2_live_connection *lc = conn->cc_private; + + error = dlm_unlock(conn->cc_lockspace, lksb->sb_lkid, 0, lksb, conn); + if (error) { + printk(KERN_ERR "%s lkid %x error %d\n", + name, lksb->sb_lkid, error); + return error; + } + + wait_for_completion(&lc->oc_sync_wait); + + if (lksb->sb_status != -DLM_EUNLOCK) { + printk(KERN_ERR "%s lkid %x status %d\n", + name, lksb->sb_lkid, lksb->sb_status); + return -1; + } + return 0; +} + +static int sync_lock(struct ocfs2_cluster_connection *conn, + int mode, uint32_t flags, + struct dlm_lksb *lksb, char *name) +{ + int error, status; + struct ocfs2_live_connection *lc = conn->cc_private; + + error = dlm_lock(conn->cc_lockspace, mode, lksb, flags, + name, strlen(name), + 0, sync_wait_cb, conn, NULL); + if (error) { + printk(KERN_ERR "%s lkid %x flags %x mode %d error %d\n", + name, lksb->sb_lkid, flags, mode, error); + return error; + } + + wait_for_completion(&lc->oc_sync_wait); + + status = lksb->sb_status; + + if (status && status != -EAGAIN) { + printk(KERN_ERR "%s lkid %x flags %x mode %d status %d\n", + name, lksb->sb_lkid, flags, mode, status); + } + + return status; +} + + +static int version_lock(struct ocfs2_cluster_connection *conn, int mode, + int flags) +{ + struct ocfs2_live_connection *lc = conn->cc_private; + return sync_lock(conn, mode, flags, + &lc->oc_version_lksb, VERSION_LOCK); +} + +static int version_unlock(struct ocfs2_cluster_connection *conn) +{ + struct ocfs2_live_connection *lc = conn->cc_private; + return sync_unlock(conn, &lc->oc_version_lksb, VERSION_LOCK); +} + +/* get_protocol_version() + * + * To exchange ocfs2 versioning, we use the LVB of the version dlm lock. + * The algorithm is: + * 1. Attempt to take the lock in EX mode (non-blocking). + * 2. If successful (which means it is the first mount), write the + * version number and downconvert to PR lock. + * 3. If unsuccessful (returns -EAGAIN), read the version from the LVB after + * taking the PR lock. + */ + +static int get_protocol_version(struct ocfs2_cluster_connection *conn) +{ + int ret; + struct ocfs2_live_connection *lc = conn->cc_private; + struct ocfs2_protocol_version pv; + + running_proto.pv_major = + ocfs2_user_plugin.sp_max_proto.pv_major; + running_proto.pv_minor = + ocfs2_user_plugin.sp_max_proto.pv_minor; + + lc->oc_version_lksb.sb_lvbptr = lc->oc_lvb; + ret = version_lock(conn, DLM_LOCK_EX, + DLM_LKF_VALBLK|DLM_LKF_NOQUEUE); + if (!ret) { + conn->cc_version.pv_major = running_proto.pv_major; + conn->cc_version.pv_minor = running_proto.pv_minor; + version_to_lvb(&running_proto, lc->oc_lvb); + version_lock(conn, DLM_LOCK_PR, DLM_LKF_CONVERT|DLM_LKF_VALBLK); + } else if (ret == -EAGAIN) { + ret = version_lock(conn, DLM_LOCK_PR, DLM_LKF_VALBLK); + if (ret) + goto out; + lvb_to_version(lc->oc_lvb, &pv); + + if ((pv.pv_major != running_proto.pv_major) || + (pv.pv_minor > running_proto.pv_minor)) { + ret = -EINVAL; + goto out; + } + + conn->cc_version.pv_major = pv.pv_major; + conn->cc_version.pv_minor = pv.pv_minor; + } +out: + return ret; +} + +static void user_recover_prep(void *arg) +{ +} + +static void user_recover_slot(void *arg, struct dlm_slot *slot) +{ + struct ocfs2_cluster_connection *conn = arg; + printk(KERN_INFO "ocfs2: Node %d/%d down. Initiating recovery.\n", + slot->nodeid, slot->slot); + conn->cc_recovery_handler(slot->nodeid, conn->cc_recovery_data); + +} + +static void user_recover_done(void *arg, struct dlm_slot *slots, + int num_slots, int our_slot, + uint32_t generation) +{ + struct ocfs2_cluster_connection *conn = arg; + struct ocfs2_live_connection *lc = conn->cc_private; + int i; + + for (i = 0; i < num_slots; i++) + if (slots[i].slot == our_slot) { + atomic_set(&lc->oc_this_node, slots[i].nodeid); + break; + } + + lc->oc_our_slot = our_slot; + wake_up(&lc->oc_wait); +} + +static const struct dlm_lockspace_ops ocfs2_ls_ops = { + .recover_prep = user_recover_prep, + .recover_slot = user_recover_slot, + .recover_done = user_recover_done, +}; + +static int user_cluster_disconnect(struct ocfs2_cluster_connection *conn) +{ + version_unlock(conn); + dlm_release_lockspace(conn->cc_lockspace, 2); + conn->cc_lockspace = NULL; + ocfs2_live_connection_drop(conn->cc_private); + conn->cc_private = NULL; + return 0; +} + static int user_cluster_connect(struct ocfs2_cluster_connection *conn) { dlm_lockspace_t *fsdlm; - struct ocfs2_live_connection *uninitialized_var(control); - int rc = 0; + struct ocfs2_live_connection *lc; + int rc, ops_rv; BUG_ON(conn == NULL); - rc = ocfs2_live_connection_new(conn, &control); + lc = kzalloc(sizeof(struct ocfs2_live_connection), GFP_KERNEL); + if (!lc) { + rc = -ENOMEM; + goto out; + } + + init_waitqueue_head(&lc->oc_wait); + init_completion(&lc->oc_sync_wait); + atomic_set(&lc->oc_this_node, 0); + conn->cc_private = lc; + lc->oc_type = NO_CONTROLD; + + rc = dlm_new_lockspace(conn->cc_name, conn->cc_cluster_name, + DLM_LSFL_FS, DLM_LVB_LEN, + &ocfs2_ls_ops, conn, &ops_rv, &fsdlm); + if (rc) + goto out; + + if (ops_rv == -EOPNOTSUPP) { + lc->oc_type = WITH_CONTROLD; + printk(KERN_NOTICE "ocfs2: You seem to be using an older " + "version of dlm_controld and/or ocfs2-tools." + " Please consider upgrading.\n"); + } else if (ops_rv) { + rc = ops_rv; + goto out; + } + conn->cc_lockspace = fsdlm; + + rc = ocfs2_live_connection_attach(conn, lc); if (rc) goto out; + if (lc->oc_type == NO_CONTROLD) { + rc = get_protocol_version(conn); + if (rc) { + printk(KERN_ERR "ocfs2: Could not determine" + " locking version\n"); + user_cluster_disconnect(conn); + goto out; + } + wait_event(lc->oc_wait, (atomic_read(&lc->oc_this_node) > 0)); + } + /* * running_proto must have been set before we allowed any mounts * to proceed. @@ -818,42 +1054,34 @@ static int user_cluster_connect(struct ocfs2_cluster_connection *conn) if (fs_protocol_compare(&running_proto, &conn->cc_version)) { printk(KERN_ERR "Unable to mount with fs locking protocol version " - "%u.%u because the userspace control daemon has " - "negotiated %u.%u\n", + "%u.%u because negotiated protocol is %u.%u\n", conn->cc_version.pv_major, conn->cc_version.pv_minor, running_proto.pv_major, running_proto.pv_minor); rc = -EPROTO; - ocfs2_live_connection_drop(control); - goto out; - } - - rc = dlm_new_lockspace(conn->cc_name, NULL, DLM_LSFL_FS, DLM_LVB_LEN, - NULL, NULL, NULL, &fsdlm); - if (rc) { - ocfs2_live_connection_drop(control); - goto out; + ocfs2_live_connection_drop(lc); + lc = NULL; } - conn->cc_private = control; - conn->cc_lockspace = fsdlm; out: + if (rc && lc) + kfree(lc); return rc; } -static int user_cluster_disconnect(struct ocfs2_cluster_connection *conn) -{ - dlm_release_lockspace(conn->cc_lockspace, 2); - conn->cc_lockspace = NULL; - ocfs2_live_connection_drop(conn->cc_private); - conn->cc_private = NULL; - return 0; -} -static int user_cluster_this_node(unsigned int *this_node) +static int user_cluster_this_node(struct ocfs2_cluster_connection *conn, + unsigned int *this_node) { int rc; + struct ocfs2_live_connection *lc = conn->cc_private; + + if (lc->oc_type == WITH_CONTROLD) + rc = ocfs2_control_get_this_node(); + else if (lc->oc_type == NO_CONTROLD) + rc = atomic_read(&lc->oc_this_node); + else + rc = -EINVAL; - rc = ocfs2_control_get_this_node(); if (rc < 0) return rc; diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c index cb7ec0b63ddc..83f1a665ae97 100644 --- a/fs/ocfs2/stackglue.c +++ b/fs/ocfs2/stackglue.c @@ -309,6 +309,8 @@ int ocfs2_plock(struct ocfs2_cluster_connection *conn, u64 ino, EXPORT_SYMBOL_GPL(ocfs2_plock); int ocfs2_cluster_connect(const char *stack_name, + const char *cluster_name, + int cluster_name_len, const char *group, int grouplen, struct ocfs2_locking_protocol *lproto, @@ -342,8 +344,12 @@ int ocfs2_cluster_connect(const char *stack_name, goto out; } - memcpy(new_conn->cc_name, group, grouplen); + strlcpy(new_conn->cc_name, group, GROUP_NAME_MAX + 1); new_conn->cc_namelen = grouplen; + if (cluster_name_len) + strlcpy(new_conn->cc_cluster_name, cluster_name, + CLUSTER_NAME_MAX + 1); + new_conn->cc_cluster_name_len = cluster_name_len; new_conn->cc_recovery_handler = recovery_handler; new_conn->cc_recovery_data = recovery_data; @@ -386,8 +392,9 @@ int ocfs2_cluster_connect_agnostic(const char *group, if (cluster_stack_name[0]) stack_name = cluster_stack_name; - return ocfs2_cluster_connect(stack_name, group, grouplen, lproto, - recovery_handler, recovery_data, conn); + return ocfs2_cluster_connect(stack_name, NULL, 0, group, grouplen, + lproto, recovery_handler, recovery_data, + conn); } EXPORT_SYMBOL_GPL(ocfs2_cluster_connect_agnostic); @@ -460,9 +467,10 @@ void ocfs2_cluster_hangup(const char *group, int grouplen) } EXPORT_SYMBOL_GPL(ocfs2_cluster_hangup); -int ocfs2_cluster_this_node(unsigned int *node) +int ocfs2_cluster_this_node(struct ocfs2_cluster_connection *conn, + unsigned int *node) { - return active_stack->sp_ops->this_node(node); + return active_stack->sp_ops->this_node(conn, node); } EXPORT_SYMBOL_GPL(ocfs2_cluster_this_node); @@ -488,7 +496,7 @@ static ssize_t ocfs2_max_locking_protocol_show(struct kobject *kobj, } static struct kobj_attribute ocfs2_attr_max_locking_protocol = - __ATTR(max_locking_protocol, S_IFREG | S_IRUGO, + __ATTR(max_locking_protocol, S_IRUGO, ocfs2_max_locking_protocol_show, NULL); static ssize_t ocfs2_loaded_cluster_plugins_show(struct kobject *kobj, @@ -520,7 +528,7 @@ static ssize_t ocfs2_loaded_cluster_plugins_show(struct kobject *kobj, } static struct kobj_attribute ocfs2_attr_loaded_cluster_plugins = - __ATTR(loaded_cluster_plugins, S_IFREG | S_IRUGO, + __ATTR(loaded_cluster_plugins, S_IRUGO, ocfs2_loaded_cluster_plugins_show, NULL); static ssize_t ocfs2_active_cluster_plugin_show(struct kobject *kobj, @@ -542,7 +550,7 @@ static ssize_t ocfs2_active_cluster_plugin_show(struct kobject *kobj, } static struct kobj_attribute ocfs2_attr_active_cluster_plugin = - __ATTR(active_cluster_plugin, S_IFREG | S_IRUGO, + __ATTR(active_cluster_plugin, S_IRUGO, ocfs2_active_cluster_plugin_show, NULL); static ssize_t ocfs2_cluster_stack_show(struct kobject *kobj, @@ -591,15 +599,29 @@ static ssize_t ocfs2_cluster_stack_store(struct kobject *kobj, static struct kobj_attribute ocfs2_attr_cluster_stack = - __ATTR(cluster_stack, S_IFREG | S_IRUGO | S_IWUSR, + __ATTR(cluster_stack, S_IRUGO | S_IWUSR, ocfs2_cluster_stack_show, ocfs2_cluster_stack_store); + + +static ssize_t ocfs2_dlm_recover_show(struct kobject *kobj, + struct kobj_attribute *attr, + char *buf) +{ + return snprintf(buf, PAGE_SIZE, "1\n"); +} + +static struct kobj_attribute ocfs2_attr_dlm_recover_support = + __ATTR(dlm_recover_callback_support, S_IRUGO, + ocfs2_dlm_recover_show, NULL); + static struct attribute *ocfs2_attrs[] = { &ocfs2_attr_max_locking_protocol.attr, &ocfs2_attr_loaded_cluster_plugins.attr, &ocfs2_attr_active_cluster_plugin.attr, &ocfs2_attr_cluster_stack.attr, + &ocfs2_attr_dlm_recover_support.attr, NULL, }; diff --git a/fs/ocfs2/stackglue.h b/fs/ocfs2/stackglue.h index 1ec56fdb8d0d..66334a30cea8 100644 --- a/fs/ocfs2/stackglue.h +++ b/fs/ocfs2/stackglue.h @@ -45,6 +45,9 @@ struct file_lock; */ #define GROUP_NAME_MAX 64 +/* This shadows OCFS2_CLUSTER_NAME_LEN */ +#define CLUSTER_NAME_MAX 16 + /* * ocfs2_protocol_version changes when ocfs2 does something different in @@ -97,8 +100,10 @@ struct ocfs2_locking_protocol { * locking compatibility. */ struct ocfs2_cluster_connection { - char cc_name[GROUP_NAME_MAX]; + char cc_name[GROUP_NAME_MAX + 1]; int cc_namelen; + char cc_cluster_name[CLUSTER_NAME_MAX + 1]; + int cc_cluster_name_len; struct ocfs2_protocol_version cc_version; struct ocfs2_locking_protocol *cc_proto; void (*cc_recovery_handler)(int node_num, void *recovery_data); @@ -152,7 +157,8 @@ struct ocfs2_stack_operations { * ->this_node() returns the cluster's unique identifier for the * local node. */ - int (*this_node)(unsigned int *node); + int (*this_node)(struct ocfs2_cluster_connection *conn, + unsigned int *node); /* * Call the underlying dlm lock function. The ->dlm_lock() @@ -239,6 +245,8 @@ struct ocfs2_stack_plugin { /* Used by the filesystem */ int ocfs2_cluster_connect(const char *stack_name, + const char *cluster_name, + int cluster_name_len, const char *group, int grouplen, struct ocfs2_locking_protocol *lproto, @@ -260,7 +268,8 @@ int ocfs2_cluster_connect_agnostic(const char *group, int ocfs2_cluster_disconnect(struct ocfs2_cluster_connection *conn, int hangup_pending); void ocfs2_cluster_hangup(const char *group, int grouplen); -int ocfs2_cluster_this_node(unsigned int *node); +int ocfs2_cluster_this_node(struct ocfs2_cluster_connection *conn, + unsigned int *node); struct ocfs2_lock_res; int ocfs2_dlm_lock(struct ocfs2_cluster_connection *conn, diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c index 2c91452c4047..0cb889a17ae1 100644 --- a/fs/ocfs2/suballoc.c +++ b/fs/ocfs2/suballoc.c @@ -113,12 +113,6 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_alloc_context *ac, struct ocfs2_suballoc_result *res); static int ocfs2_test_bg_bit_allocatable(struct buffer_head *bg_bh, int nr); -static inline int ocfs2_block_group_set_bits(handle_t *handle, - struct inode *alloc_inode, - struct ocfs2_group_desc *bg, - struct buffer_head *group_bh, - unsigned int bit_off, - unsigned int num_bits); static int ocfs2_relink_block_group(handle_t *handle, struct inode *alloc_inode, struct buffer_head *fe_bh, @@ -777,6 +771,7 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb, spin_unlock(&OCFS2_I(alloc_inode)->ip_lock); i_size_write(alloc_inode, le64_to_cpu(fe->i_size)); alloc_inode->i_blocks = ocfs2_inode_sector_count(alloc_inode); + ocfs2_update_inode_fsync_trans(handle, alloc_inode, 0); status = 0; @@ -1343,7 +1338,7 @@ static int ocfs2_block_group_find_clear_bits(struct ocfs2_super *osb, return status; } -static inline int ocfs2_block_group_set_bits(handle_t *handle, +int ocfs2_block_group_set_bits(handle_t *handle, struct inode *alloc_inode, struct ocfs2_group_desc *bg, struct buffer_head *group_bh, @@ -1388,8 +1383,6 @@ static inline int ocfs2_block_group_set_bits(handle_t *handle, ocfs2_journal_dirty(handle, group_bh); bail: - if (status) - mlog_errno(status); return status; } @@ -1588,7 +1581,7 @@ static int ocfs2_block_group_search(struct inode *inode, return ret; } -static int ocfs2_alloc_dinode_update_counts(struct inode *inode, +int ocfs2_alloc_dinode_update_counts(struct inode *inode, handle_t *handle, struct buffer_head *di_bh, u32 num_bits, @@ -1615,6 +1608,21 @@ out: return ret; } +void ocfs2_rollback_alloc_dinode_counts(struct inode *inode, + struct buffer_head *di_bh, + u32 num_bits, + u16 chain) +{ + u32 tmp_used; + struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; + struct ocfs2_chain_list *cl; + + cl = (struct ocfs2_chain_list *)&di->id2.i_chain; + tmp_used = le32_to_cpu(di->id1.bitmap1.i_used); + di->id1.bitmap1.i_used = cpu_to_le32(tmp_used - num_bits); + le32_add_cpu(&cl->cl_recs[chain].c_free, num_bits); +} + static int ocfs2_bg_discontig_fix_by_rec(struct ocfs2_suballoc_result *res, struct ocfs2_extent_rec *rec, struct ocfs2_chain_list *cl) @@ -1715,8 +1723,12 @@ static int ocfs2_search_one_group(struct ocfs2_alloc_context *ac, ret = ocfs2_block_group_set_bits(handle, alloc_inode, gd, group_bh, res->sr_bit_offset, res->sr_bits); - if (ret < 0) + if (ret < 0) { + ocfs2_rollback_alloc_dinode_counts(alloc_inode, ac->ac_bh, + res->sr_bits, + le16_to_cpu(gd->bg_chain)); mlog_errno(ret); + } out_loc_only: *bits_left = le16_to_cpu(gd->bg_free_bits_count); @@ -1846,6 +1858,8 @@ static int ocfs2_search_chain(struct ocfs2_alloc_context *ac, res->sr_bit_offset, res->sr_bits); if (status < 0) { + ocfs2_rollback_alloc_dinode_counts(alloc_inode, + ac->ac_bh, res->sr_bits, chain); mlog_errno(status); goto bail; } @@ -2099,7 +2113,7 @@ int ocfs2_find_new_inode_loc(struct inode *dir, ac->ac_find_loc_priv = res; *fe_blkno = res->sr_blkno; - + ocfs2_update_inode_fsync_trans(handle, dir, 0); out: if (handle) ocfs2_commit_trans(OCFS2_SB(dir->i_sb), handle); @@ -2157,6 +2171,8 @@ int ocfs2_claim_new_inode_at_loc(handle_t *handle, res->sr_bit_offset, res->sr_bits); if (ret < 0) { + ocfs2_rollback_alloc_dinode_counts(ac->ac_inode, + ac->ac_bh, res->sr_bits, chain); mlog_errno(ret); goto out; } @@ -2878,6 +2894,7 @@ int ocfs2_test_inode_bit(struct ocfs2_super *osb, u64 blkno, int *res) status = ocfs2_inode_lock(inode_alloc_inode, &alloc_bh, 0); if (status < 0) { mutex_unlock(&inode_alloc_inode->i_mutex); + iput(inode_alloc_inode); mlog(ML_ERROR, "lock on alloc inode on slot %u failed %d\n", (u32)suballoc_slot, status); goto bail; diff --git a/fs/ocfs2/suballoc.h b/fs/ocfs2/suballoc.h index a36d0aa50911..2d2501767c0c 100644 --- a/fs/ocfs2/suballoc.h +++ b/fs/ocfs2/suballoc.h @@ -86,6 +86,22 @@ int ocfs2_reserve_clusters(struct ocfs2_super *osb, u32 bits_wanted, struct ocfs2_alloc_context **ac); +int ocfs2_alloc_dinode_update_counts(struct inode *inode, + handle_t *handle, + struct buffer_head *di_bh, + u32 num_bits, + u16 chain); +void ocfs2_rollback_alloc_dinode_counts(struct inode *inode, + struct buffer_head *di_bh, + u32 num_bits, + u16 chain); +int ocfs2_block_group_set_bits(handle_t *handle, + struct inode *alloc_inode, + struct ocfs2_group_desc *bg, + struct buffer_head *group_bh, + unsigned int bit_off, + unsigned int num_bits); + int ocfs2_claim_metadata(handle_t *handle, struct ocfs2_alloc_context *ac, u32 bits_wanted, diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index c41492957aa5..a7cdd56f4c79 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -68,7 +68,6 @@ #include "super.h" #include "sysfile.h" #include "uptodate.h" -#include "ver.h" #include "xattr.h" #include "quota.h" #include "refcounttree.h" @@ -90,6 +89,7 @@ static struct dentry *ocfs2_debugfs_root = NULL; MODULE_AUTHOR("Oracle"); MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("OCFS2 cluster file system"); struct mount_options { @@ -561,6 +561,9 @@ static struct inode *ocfs2_alloc_inode(struct super_block *sb) if (!oi) return NULL; + oi->i_sync_tid = 0; + oi->i_datasync_tid = 0; + jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode); return &oi->vfs_inode; } @@ -631,6 +634,8 @@ static int ocfs2_remount(struct super_block *sb, int *flags, char *data) struct ocfs2_super *osb = OCFS2_SB(sb); u32 tmp; + sync_filesystem(sb); + if (!ocfs2_parse_options(sb, data, &parsed_options, 1) || !ocfs2_check_set_options(sb, &parsed_options)) { ret = -EINVAL; @@ -1238,30 +1243,11 @@ static struct dentry *ocfs2_mount(struct file_system_type *fs_type, return mount_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super); } -static void ocfs2_kill_sb(struct super_block *sb) -{ - struct ocfs2_super *osb = OCFS2_SB(sb); - - /* Failed mount? */ - if (!osb || atomic_read(&osb->vol_state) == VOLUME_DISABLED) - goto out; - - /* Prevent further queueing of inode drop events */ - spin_lock(&dentry_list_lock); - ocfs2_set_osb_flag(osb, OCFS2_OSB_DROP_DENTRY_LOCK_IMMED); - spin_unlock(&dentry_list_lock); - /* Wait for work to finish and/or remove it */ - cancel_work_sync(&osb->dentry_lock_work); -out: - kill_block_super(sb); -} - static struct file_system_type ocfs2_fs_type = { .owner = THIS_MODULE, .name = "ocfs2", .mount = ocfs2_mount, - .kill_sb = ocfs2_kill_sb, - + .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, .next = NULL }; @@ -1612,16 +1598,9 @@ static int ocfs2_show_options(struct seq_file *s, struct dentry *root) return 0; } -wait_queue_head_t ocfs2__ioend_wq[OCFS2_IOEND_WQ_HASH_SZ]; - static int __init ocfs2_init(void) { - int status, i; - - ocfs2_print_version(); - - for (i = 0; i < OCFS2_IOEND_WQ_HASH_SZ; i++) - init_waitqueue_head(&ocfs2__ioend_wq[i]); + int status; status = init_ocfs2_uptodate_cache(); if (status < 0) @@ -1763,7 +1742,7 @@ static void ocfs2_inode_init_once(void *data) ocfs2_extent_map_init(&oi->vfs_inode); INIT_LIST_HEAD(&oi->ip_io_markers); oi->ip_dir_start_lookup = 0; - atomic_set(&oi->ip_unaligned_aio, 0); + mutex_init(&oi->ip_unaligned_aio); init_rwsem(&oi->ip_alloc_sem); init_rwsem(&oi->ip_xattr_sem); mutex_init(&oi->ip_io_mutex); @@ -1934,24 +1913,27 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) debugfs_remove(osb->osb_ctxt); - /* - * Flush inode dropping work queue so that deletes are - * performed while the filesystem is still working - */ - ocfs2_drop_all_dl_inodes(osb); - /* Orphan scan should be stopped as early as possible */ ocfs2_orphan_scan_stop(osb); ocfs2_disable_quotas(osb); - ocfs2_shutdown_local_alloc(osb); + /* All dquots should be freed by now */ + WARN_ON(!llist_empty(&osb->dquot_drop_list)); + /* Wait for worker to be done with the work structure in osb */ + cancel_work_sync(&osb->dquot_drop_work); - ocfs2_truncate_log_shutdown(osb); + ocfs2_shutdown_local_alloc(osb); /* This will disable recovery and flush any recovery work. */ ocfs2_recovery_exit(osb); + /* + * During dismount, when it recovers another node it will call + * ocfs2_recover_orphans and queue delayed work osb_truncate_log_wq. + */ + ocfs2_truncate_log_shutdown(osb); + ocfs2_journal_shutdown(osb); ocfs2_sync_blockdev(sb); @@ -2075,7 +2057,6 @@ static int ocfs2_initialize_super(struct super_block *sb, struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; struct inode *inode = NULL; struct ocfs2_journal *journal; - __le32 uuid_net_key; struct ocfs2_super *osb; u64 total_blocks; @@ -2121,6 +2102,8 @@ static int ocfs2_initialize_super(struct super_block *sb, spin_lock_init(&osb->osb_xattr_lock); ocfs2_init_steal_slots(osb); + mutex_init(&osb->system_file_mutex); + atomic_set(&osb->alloc_stats.moves, 0); atomic_set(&osb->alloc_stats.local_data, 0); atomic_set(&osb->alloc_stats.bitmap_data, 0); @@ -2225,10 +2208,9 @@ static int ocfs2_initialize_super(struct super_block *sb, if (ocfs2_clusterinfo_valid(osb)) { osb->osb_stackflags = OCFS2_RAW_SB(di)->s_cluster_info.ci_stackflags; - memcpy(osb->osb_cluster_stack, + strlcpy(osb->osb_cluster_stack, OCFS2_RAW_SB(di)->s_cluster_info.ci_stack, - OCFS2_STACK_LABEL_LEN); - osb->osb_cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; + OCFS2_STACK_LABEL_LEN + 1); if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) { mlog(ML_ERROR, "couldn't mount because of an invalid " @@ -2237,6 +2219,9 @@ static int ocfs2_initialize_super(struct super_block *sb, status = -EINVAL; goto bail; } + strlcpy(osb->osb_cluster_name, + OCFS2_RAW_SB(di)->s_cluster_info.ci_cluster, + OCFS2_CLUSTER_NAME_LEN + 1); } else { /* The empty string is identical with classic tools that * don't know about s_cluster_info. */ @@ -2272,8 +2257,8 @@ static int ocfs2_initialize_super(struct super_block *sb, INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery); journal->j_state = OCFS2_JOURNAL_FREE; - INIT_WORK(&osb->dentry_lock_work, ocfs2_drop_dl_inodes); - osb->dentry_lock_list = NULL; + INIT_WORK(&osb->dquot_drop_work, ocfs2_drop_dquot_refs); + init_llist_head(&osb->dquot_drop_list); /* get some pseudo constants for clustersize bits */ osb->s_clustersize_bits = @@ -2307,8 +2292,6 @@ static int ocfs2_initialize_super(struct super_block *sb, goto bail; } - memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key)); - strncpy(osb->vol_label, di->id2.i_super.s_label, 63); osb->vol_label[63] = '\0'; osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); diff --git a/fs/ocfs2/sysfile.c b/fs/ocfs2/sysfile.c index f053688d22a3..af155c183123 100644 --- a/fs/ocfs2/sysfile.c +++ b/fs/ocfs2/sysfile.c @@ -113,9 +113,11 @@ struct inode *ocfs2_get_system_file_inode(struct ocfs2_super *osb, } else arr = get_local_system_inode(osb, type, slot); + mutex_lock(&osb->system_file_mutex); if (arr && ((inode = *arr) != NULL)) { /* get a ref in addition to the array ref */ inode = igrab(inode); + mutex_unlock(&osb->system_file_mutex); BUG_ON(!inode); return inode; @@ -129,6 +131,7 @@ struct inode *ocfs2_get_system_file_inode(struct ocfs2_super *osb, *arr = igrab(inode); BUG_ON(!*arr); } + mutex_unlock(&osb->system_file_mutex); return inode; } diff --git a/fs/ocfs2/ver.c b/fs/ocfs2/ver.c deleted file mode 100644 index e2488f4128a2..000000000000 --- a/fs/ocfs2/ver.c +++ /dev/null @@ -1,43 +0,0 @@ -/* -*- mode: c; c-basic-offset: 8; -*- - * vim: noexpandtab sw=8 ts=8 sts=0: - * - * ver.c - * - * version string - * - * Copyright (C) 2002, 2005 Oracle. All rights reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 021110-1307, USA. - */ - -#include <linux/module.h> -#include <linux/string.h> -#include <linux/kernel.h> - -#include "ver.h" - -#define OCFS2_BUILD_VERSION "1.5.0" - -#define VERSION_STR "OCFS2 " OCFS2_BUILD_VERSION - -void ocfs2_print_version(void) -{ - printk(KERN_INFO "%s\n", VERSION_STR); -} - -MODULE_DESCRIPTION(VERSION_STR); - -MODULE_VERSION(OCFS2_BUILD_VERSION); diff --git a/fs/ocfs2/ver.h b/fs/ocfs2/ver.h deleted file mode 100644 index d7395cb91d2f..000000000000 --- a/fs/ocfs2/ver.h +++ /dev/null @@ -1,31 +0,0 @@ -/* -*- mode: c; c-basic-offset: 8; -*- - * vim: noexpandtab sw=8 ts=8 sts=0: - * - * ver.h - * - * Function prototypes - * - * Copyright (C) 2002, 2004 Oracle. All rights reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 021110-1307, USA. - */ - -#ifndef OCFS2_VER_H -#define OCFS2_VER_H - -void ocfs2_print_version(void); - -#endif /* OCFS2_VER_H */ diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c index f0a1326d9bba..016f01df3825 100644 --- a/fs/ocfs2/xattr.c +++ b/fs/ocfs2/xattr.c @@ -99,8 +99,8 @@ static struct ocfs2_xattr_def_value_root def_xv = { const struct xattr_handler *ocfs2_xattr_handlers[] = { &ocfs2_xattr_user_handler, - &ocfs2_xattr_acl_access_handler, - &ocfs2_xattr_acl_default_handler, + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, &ocfs2_xattr_trusted_handler, &ocfs2_xattr_security_handler, NULL @@ -109,9 +109,9 @@ const struct xattr_handler *ocfs2_xattr_handlers[] = { static const struct xattr_handler *ocfs2_xattr_handler_map[OCFS2_XATTR_MAX] = { [OCFS2_XATTR_INDEX_USER] = &ocfs2_xattr_user_handler, [OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS] - = &ocfs2_xattr_acl_access_handler, + = &posix_acl_access_xattr_handler, [OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT] - = &ocfs2_xattr_acl_default_handler, + = &posix_acl_default_xattr_handler, [OCFS2_XATTR_INDEX_TRUSTED] = &ocfs2_xattr_trusted_handler, [OCFS2_XATTR_INDEX_SECURITY] = &ocfs2_xattr_security_handler, }; @@ -369,7 +369,7 @@ static void ocfs2_xattr_bucket_free(struct ocfs2_xattr_bucket *bucket) * them fully. */ static int ocfs2_init_xattr_bucket(struct ocfs2_xattr_bucket *bucket, - u64 xb_blkno) + u64 xb_blkno, int new) { int i, rc = 0; @@ -383,9 +383,16 @@ static int ocfs2_init_xattr_bucket(struct ocfs2_xattr_bucket *bucket, } if (!ocfs2_buffer_uptodate(INODE_CACHE(bucket->bu_inode), - bucket->bu_bhs[i])) - ocfs2_set_new_buffer_uptodate(INODE_CACHE(bucket->bu_inode), - bucket->bu_bhs[i]); + bucket->bu_bhs[i])) { + if (new) + ocfs2_set_new_buffer_uptodate(INODE_CACHE(bucket->bu_inode), + bucket->bu_bhs[i]); + else { + set_buffer_uptodate(bucket->bu_bhs[i]); + ocfs2_set_buffer_uptodate(INODE_CACHE(bucket->bu_inode), + bucket->bu_bhs[i]); + } + } } if (rc) @@ -2602,6 +2609,7 @@ int ocfs2_xattr_remove(struct inode *inode, struct buffer_head *di_bh) oi->ip_dyn_features &= ~(OCFS2_INLINE_XATTR_FL | OCFS2_HAS_XATTR_FL); di->i_dyn_features = cpu_to_le16(oi->ip_dyn_features); spin_unlock(&oi->ip_lock); + ocfs2_update_inode_fsync_trans(handle, inode, 0); ocfs2_journal_dirty(handle, di_bh); out_commit: @@ -3200,8 +3208,15 @@ meta_guess: clusters_add += 1; } } else { - meta_add += 1; credits += OCFS2_XATTR_BLOCK_CREATE_CREDITS; + if (xi->xi_value_len > OCFS2_XATTR_INLINE_SIZE) { + struct ocfs2_extent_list *el = &def_xv.xv.xr_list; + meta_add += ocfs2_extend_meta_needed(el); + credits += ocfs2_calc_extend_credits(inode->i_sb, + el); + } else { + meta_add += 1; + } } out: if (clusters_need) @@ -3614,6 +3629,7 @@ int ocfs2_xattr_set(struct inode *inode, } ret = __ocfs2_xattr_set_handle(inode, di, &xi, &xis, &xbs, &ctxt); + ocfs2_update_inode_fsync_trans(ctxt.handle, inode, 0); ocfs2_commit_trans(osb, ctxt.handle); @@ -4294,7 +4310,7 @@ static int ocfs2_xattr_create_index_block(struct inode *inode, trace_ocfs2_xattr_create_index_block((unsigned long long)blkno); - ret = ocfs2_init_xattr_bucket(xs->bucket, blkno); + ret = ocfs2_init_xattr_bucket(xs->bucket, blkno, 1); if (ret) { mlog_errno(ret); goto out; @@ -4638,7 +4654,7 @@ static int ocfs2_divide_xattr_bucket(struct inode *inode, * Even if !new_bucket_head, we're overwriting t_bucket. Thus, * there's no need to read it. */ - ret = ocfs2_init_xattr_bucket(t_bucket, new_blk); + ret = ocfs2_init_xattr_bucket(t_bucket, new_blk, new_bucket_head); if (ret) { mlog_errno(ret); goto out; @@ -4804,7 +4820,7 @@ static int ocfs2_cp_xattr_bucket(struct inode *inode, * Even if !t_is_new, we're overwriting t_bucket. Thus, * there's no need to read it. */ - ret = ocfs2_init_xattr_bucket(t_bucket, t_blkno); + ret = ocfs2_init_xattr_bucket(t_bucket, t_blkno, t_is_new); if (ret) goto out; @@ -5476,6 +5492,7 @@ static int ocfs2_rm_xattr_cluster(struct inode *inode, ret = ocfs2_truncate_log_append(osb, handle, blkno, len); if (ret) mlog_errno(ret); + ocfs2_update_inode_fsync_trans(handle, inode, 0); out_commit: ocfs2_commit_trans(osb, handle); @@ -6830,7 +6847,7 @@ static int ocfs2_reflink_xattr_bucket(handle_t *handle, break; } - ret = ocfs2_init_xattr_bucket(args->new_bucket, new_blkno); + ret = ocfs2_init_xattr_bucket(args->new_bucket, new_blkno, 1); if (ret) { mlog_errno(ret); break; @@ -7190,10 +7207,12 @@ out: */ int ocfs2_init_security_and_acl(struct inode *dir, struct inode *inode, - const struct qstr *qstr) + const struct qstr *qstr, + struct posix_acl *default_acl, + struct posix_acl *acl) { - int ret = 0; struct buffer_head *dir_bh = NULL; + int ret = 0; ret = ocfs2_init_security_get(inode, dir, qstr, NULL); if (ret) { @@ -7207,9 +7226,10 @@ int ocfs2_init_security_and_acl(struct inode *dir, goto leave; } - ret = ocfs2_init_acl(NULL, inode, dir, NULL, dir_bh, NULL, NULL); - if (ret) - mlog_errno(ret); + if (!ret && default_acl) + ret = ocfs2_iop_set_acl(inode, default_acl, ACL_TYPE_DEFAULT); + if (!ret && acl) + ret = ocfs2_iop_set_acl(inode, acl, ACL_TYPE_ACCESS); ocfs2_inode_unlock(dir, 0); brelse(dir_bh); diff --git a/fs/ocfs2/xattr.h b/fs/ocfs2/xattr.h index 19f134e896a9..f10d5b93c366 100644 --- a/fs/ocfs2/xattr.h +++ b/fs/ocfs2/xattr.h @@ -40,8 +40,6 @@ struct ocfs2_security_xattr_info { extern const struct xattr_handler ocfs2_xattr_user_handler; extern const struct xattr_handler ocfs2_xattr_trusted_handler; extern const struct xattr_handler ocfs2_xattr_security_handler; -extern const struct xattr_handler ocfs2_xattr_acl_access_handler; -extern const struct xattr_handler ocfs2_xattr_acl_default_handler; extern const struct xattr_handler *ocfs2_xattr_handlers[]; ssize_t ocfs2_listxattr(struct dentry *, char *, size_t); @@ -96,5 +94,7 @@ int ocfs2_reflink_xattrs(struct inode *old_inode, bool preserve_security); int ocfs2_init_security_and_acl(struct inode *dir, struct inode *inode, - const struct qstr *qstr); + const struct qstr *qstr, + struct posix_acl *default_acl, + struct posix_acl *acl); #endif /* OCFS2_XATTR_H */ diff --git a/fs/omfs/inode.c b/fs/omfs/inode.c index d8b0afde2179..ec58c7659183 100644 --- a/fs/omfs/inode.c +++ b/fs/omfs/inode.c @@ -183,7 +183,7 @@ int omfs_sync_inode(struct inode *inode) */ static void omfs_evict_inode(struct inode *inode) { - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); if (inode->i_nlink) diff --git a/fs/open.c b/fs/open.c index 4b3e1edf2fe4..631aea815def 100644 --- a/fs/open.c +++ b/fs/open.c @@ -231,7 +231,13 @@ int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len) return -EINVAL; /* Return error if mode is not supported */ - if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) + if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | + FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE)) + return -EOPNOTSUPP; + + /* Punch hole and zero range are mutually exclusive */ + if ((mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_ZERO_RANGE)) == + (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_ZERO_RANGE)) return -EOPNOTSUPP; /* Punch hole must have keep size set */ @@ -239,11 +245,20 @@ int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len) !(mode & FALLOC_FL_KEEP_SIZE)) return -EOPNOTSUPP; + /* Collapse range should only be used exclusively. */ + if ((mode & FALLOC_FL_COLLAPSE_RANGE) && + (mode & ~FALLOC_FL_COLLAPSE_RANGE)) + return -EINVAL; + if (!(file->f_mode & FMODE_WRITE)) return -EBADF; - /* It's not possible punch hole on append only file */ - if (mode & FALLOC_FL_PUNCH_HOLE && IS_APPEND(inode)) + /* + * It's not possible to punch hole or perform collapse range + * on append only file + */ + if (mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE) + && IS_APPEND(inode)) return -EPERM; if (IS_IMMUTABLE(inode)) @@ -271,6 +286,14 @@ int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len) if (((offset + len) > inode->i_sb->s_maxbytes) || ((offset + len) < 0)) return -EFBIG; + /* + * There is no need to overlap collapse range with EOF, in which case + * it is effectively a truncate operation + */ + if ((mode & FALLOC_FL_COLLAPSE_RANGE) && + (offset + len >= i_size_read(inode))) + return -EINVAL; + if (!file->f_op->fallocate) return -EOPNOTSUPP; @@ -705,6 +728,10 @@ static int do_dentry_open(struct file *f, return 0; } + /* POSIX.1-2008/SUSv4 Section XSI 2.9.7 */ + if (S_ISREG(inode->i_mode)) + f->f_mode |= FMODE_ATOMIC_POS; + f->f_op = fops_get(inode->i_fop); if (unlikely(WARN_ON(!f->f_op))) { error = -ENODEV; diff --git a/fs/openpromfs/inode.c b/fs/openpromfs/inode.c index 8c0ceb8dd1f7..15e4500cda3e 100644 --- a/fs/openpromfs/inode.c +++ b/fs/openpromfs/inode.c @@ -368,6 +368,7 @@ static struct inode *openprom_iget(struct super_block *sb, ino_t ino) static int openprom_remount(struct super_block *sb, int *flags, char *data) { + sync_filesystem(sb); *flags |= MS_NOATIME; return 0; } diff --git a/fs/pipe.c b/fs/pipe.c index 0e0752ef2715..78fd0d0788db 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -663,10 +663,11 @@ out: wake_up_interruptible_sync_poll(&pipe->wait, POLLIN | POLLRDNORM); kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN); } - if (ret > 0) { + if (ret > 0 && sb_start_write_trylock(file_inode(filp)->i_sb)) { int err = file_update_time(filp); if (err) ret = err; + sb_end_write(file_inode(filp)->i_sb); } return ret; } diff --git a/fs/pnode.c b/fs/pnode.c index c7221bb19801..88396df725b4 100644 --- a/fs/pnode.c +++ b/fs/pnode.c @@ -220,14 +220,14 @@ static struct mount *get_source(struct mount *dest, * @tree_list : list of heads of trees to be attached. */ int propagate_mnt(struct mount *dest_mnt, struct mountpoint *dest_mp, - struct mount *source_mnt, struct list_head *tree_list) + struct mount *source_mnt, struct hlist_head *tree_list) { struct user_namespace *user_ns = current->nsproxy->mnt_ns->user_ns; struct mount *m, *child; int ret = 0; struct mount *prev_dest_mnt = dest_mnt; struct mount *prev_src_mnt = source_mnt; - LIST_HEAD(tmp_list); + HLIST_HEAD(tmp_list); for (m = propagation_next(dest_mnt, dest_mnt); m; m = propagation_next(m, dest_mnt)) { @@ -246,27 +246,29 @@ int propagate_mnt(struct mount *dest_mnt, struct mountpoint *dest_mp, child = copy_tree(source, source->mnt.mnt_root, type); if (IS_ERR(child)) { ret = PTR_ERR(child); - list_splice(tree_list, tmp_list.prev); + tmp_list = *tree_list; + tmp_list.first->pprev = &tmp_list.first; + INIT_HLIST_HEAD(tree_list); goto out; } if (is_subdir(dest_mp->m_dentry, m->mnt.mnt_root)) { mnt_set_mountpoint(m, dest_mp, child); - list_add_tail(&child->mnt_hash, tree_list); + hlist_add_head(&child->mnt_hash, tree_list); } else { /* * This can happen if the parent mount was bind mounted * on some subdirectory of a shared/slave mount. */ - list_add_tail(&child->mnt_hash, &tmp_list); + hlist_add_head(&child->mnt_hash, &tmp_list); } prev_dest_mnt = m; prev_src_mnt = child; } out: lock_mount_hash(); - while (!list_empty(&tmp_list)) { - child = list_first_entry(&tmp_list, struct mount, mnt_hash); + while (!hlist_empty(&tmp_list)) { + child = hlist_entry(tmp_list.first, struct mount, mnt_hash); umount_tree(child, 0); } unlock_mount_hash(); @@ -338,8 +340,10 @@ static void __propagate_umount(struct mount *mnt) * umount the child only if the child has no * other children */ - if (child && list_empty(&child->mnt_mounts)) - list_move_tail(&child->mnt_hash, &mnt->mnt_hash); + if (child && list_empty(&child->mnt_mounts)) { + hlist_del_init_rcu(&child->mnt_hash); + hlist_add_before_rcu(&child->mnt_hash, &mnt->mnt_hash); + } } } @@ -350,11 +354,11 @@ static void __propagate_umount(struct mount *mnt) * * vfsmount lock must be held for write */ -int propagate_umount(struct list_head *list) +int propagate_umount(struct hlist_head *list) { struct mount *mnt; - list_for_each_entry(mnt, list, mnt_hash) + hlist_for_each_entry(mnt, list, mnt_hash) __propagate_umount(mnt); return 0; } diff --git a/fs/pnode.h b/fs/pnode.h index 59e7eda1851e..fc28a27fa892 100644 --- a/fs/pnode.h +++ b/fs/pnode.h @@ -36,8 +36,8 @@ static inline void set_mnt_shared(struct mount *mnt) void change_mnt_propagation(struct mount *, int); int propagate_mnt(struct mount *, struct mountpoint *, struct mount *, - struct list_head *); -int propagate_umount(struct list_head *); + struct hlist_head *); +int propagate_umount(struct hlist_head *); int propagate_mount_busy(struct mount *, int); void mnt_release_group_id(struct mount *); int get_dominating_id(struct mount *mnt, const struct path *root); diff --git a/fs/posix_acl.c b/fs/posix_acl.c index 8bd2135b7f82..9e363e41dacc 100644 --- a/fs/posix_acl.c +++ b/fs/posix_acl.c @@ -1,10 +1,8 @@ /* - * linux/fs/posix_acl.c + * Copyright (C) 2002,2003 by Andreas Gruenbacher <a.gruenbacher@computer.org> * - * Copyright (C) 2002 by Andreas Gruenbacher <a.gruenbacher@computer.org> - * - * Fixes from William Schumacher incorporated on 15 March 2001. - * (Reported by Charles Bertsch, <CBertsch@microtest.com>). + * Fixes from William Schumacher incorporated on 15 March 2001. + * (Reported by Charles Bertsch, <CBertsch@microtest.com>). */ /* @@ -18,15 +16,112 @@ #include <linux/fs.h> #include <linux/sched.h> #include <linux/posix_acl.h> +#include <linux/posix_acl_xattr.h> +#include <linux/xattr.h> #include <linux/export.h> +#include <linux/user_namespace.h> -#include <linux/errno.h> +struct posix_acl **acl_by_type(struct inode *inode, int type) +{ + switch (type) { + case ACL_TYPE_ACCESS: + return &inode->i_acl; + case ACL_TYPE_DEFAULT: + return &inode->i_default_acl; + default: + BUG(); + } +} +EXPORT_SYMBOL(acl_by_type); -EXPORT_SYMBOL(posix_acl_init); -EXPORT_SYMBOL(posix_acl_alloc); -EXPORT_SYMBOL(posix_acl_valid); -EXPORT_SYMBOL(posix_acl_equiv_mode); -EXPORT_SYMBOL(posix_acl_from_mode); +struct posix_acl *get_cached_acl(struct inode *inode, int type) +{ + struct posix_acl **p = acl_by_type(inode, type); + struct posix_acl *acl = ACCESS_ONCE(*p); + if (acl) { + spin_lock(&inode->i_lock); + acl = *p; + if (acl != ACL_NOT_CACHED) + acl = posix_acl_dup(acl); + spin_unlock(&inode->i_lock); + } + return acl; +} +EXPORT_SYMBOL(get_cached_acl); + +struct posix_acl *get_cached_acl_rcu(struct inode *inode, int type) +{ + return rcu_dereference(*acl_by_type(inode, type)); +} +EXPORT_SYMBOL(get_cached_acl_rcu); + +void set_cached_acl(struct inode *inode, int type, struct posix_acl *acl) +{ + struct posix_acl **p = acl_by_type(inode, type); + struct posix_acl *old; + spin_lock(&inode->i_lock); + old = *p; + rcu_assign_pointer(*p, posix_acl_dup(acl)); + spin_unlock(&inode->i_lock); + if (old != ACL_NOT_CACHED) + posix_acl_release(old); +} +EXPORT_SYMBOL(set_cached_acl); + +void forget_cached_acl(struct inode *inode, int type) +{ + struct posix_acl **p = acl_by_type(inode, type); + struct posix_acl *old; + spin_lock(&inode->i_lock); + old = *p; + *p = ACL_NOT_CACHED; + spin_unlock(&inode->i_lock); + if (old != ACL_NOT_CACHED) + posix_acl_release(old); +} +EXPORT_SYMBOL(forget_cached_acl); + +void forget_all_cached_acls(struct inode *inode) +{ + struct posix_acl *old_access, *old_default; + spin_lock(&inode->i_lock); + old_access = inode->i_acl; + old_default = inode->i_default_acl; + inode->i_acl = inode->i_default_acl = ACL_NOT_CACHED; + spin_unlock(&inode->i_lock); + if (old_access != ACL_NOT_CACHED) + posix_acl_release(old_access); + if (old_default != ACL_NOT_CACHED) + posix_acl_release(old_default); +} +EXPORT_SYMBOL(forget_all_cached_acls); + +struct posix_acl *get_acl(struct inode *inode, int type) +{ + struct posix_acl *acl; + + acl = get_cached_acl(inode, type); + if (acl != ACL_NOT_CACHED) + return acl; + + if (!IS_POSIXACL(inode)) + return NULL; + + /* + * A filesystem can force a ACL callback by just never filling the + * ACL cache. But normally you'd fill the cache either at inode + * instantiation time, or on the first ->get_acl call. + * + * If the filesystem doesn't have a get_acl() function at all, we'll + * just create the negative cache entry. + */ + if (!inode->i_op->get_acl) { + set_cached_acl(inode, type, NULL); + return NULL; + } + return inode->i_op->get_acl(inode, type); +} +EXPORT_SYMBOL(get_acl); /* * Init a fresh posix_acl @@ -37,6 +132,7 @@ posix_acl_init(struct posix_acl *acl, int count) atomic_set(&acl->a_refcount, 1); acl->a_count = count; } +EXPORT_SYMBOL(posix_acl_init); /* * Allocate a new ACL with the specified number of entries. @@ -51,6 +147,7 @@ posix_acl_alloc(int count, gfp_t flags) posix_acl_init(acl, count); return acl; } +EXPORT_SYMBOL(posix_acl_alloc); /* * Clone an ACL. @@ -78,8 +175,6 @@ posix_acl_valid(const struct posix_acl *acl) { const struct posix_acl_entry *pa, *pe; int state = ACL_USER_OBJ; - kuid_t prev_uid = INVALID_UID; - kgid_t prev_gid = INVALID_GID; int needs_mask = 0; FOREACH_ACL_ENTRY(pa, acl, pe) { @@ -98,10 +193,6 @@ posix_acl_valid(const struct posix_acl *acl) return -EINVAL; if (!uid_valid(pa->e_uid)) return -EINVAL; - if (uid_valid(prev_uid) && - uid_lte(pa->e_uid, prev_uid)) - return -EINVAL; - prev_uid = pa->e_uid; needs_mask = 1; break; @@ -117,10 +208,6 @@ posix_acl_valid(const struct posix_acl *acl) return -EINVAL; if (!gid_valid(pa->e_gid)) return -EINVAL; - if (gid_valid(prev_gid) && - gid_lte(pa->e_gid, prev_gid)) - return -EINVAL; - prev_gid = pa->e_gid; needs_mask = 1; break; @@ -146,6 +233,7 @@ posix_acl_valid(const struct posix_acl *acl) return 0; return -EINVAL; } +EXPORT_SYMBOL(posix_acl_valid); /* * Returns 0 if the acl can be exactly represented in the traditional @@ -186,6 +274,7 @@ posix_acl_equiv_mode(const struct posix_acl *acl, umode_t *mode_p) *mode_p = (*mode_p & ~S_IRWXUGO) | mode; return not_equiv; } +EXPORT_SYMBOL(posix_acl_equiv_mode); /* * Create an ACL representing the file mode permission bits of an inode. @@ -207,6 +296,7 @@ posix_acl_from_mode(umode_t mode, gfp_t flags) acl->a_entries[2].e_perm = (mode & S_IRWXO); return acl; } +EXPORT_SYMBOL(posix_acl_from_mode); /* * Return 0 if current is granted want access to the inode @@ -338,7 +428,7 @@ static int posix_acl_create_masq(struct posix_acl *acl, umode_t *mode_p) /* * Modify the ACL for the chmod syscall. */ -static int posix_acl_chmod_masq(struct posix_acl *acl, umode_t mode) +static int __posix_acl_chmod_masq(struct posix_acl *acl, umode_t mode) { struct posix_acl_entry *group_obj = NULL, *mask_obj = NULL; struct posix_acl_entry *pa, *pe; @@ -384,7 +474,7 @@ static int posix_acl_chmod_masq(struct posix_acl *acl, umode_t mode) } int -posix_acl_create(struct posix_acl **acl, gfp_t gfp, umode_t *mode_p) +__posix_acl_create(struct posix_acl **acl, gfp_t gfp, umode_t *mode_p) { struct posix_acl *clone = posix_acl_clone(*acl, gfp); int err = -ENOMEM; @@ -399,15 +489,15 @@ posix_acl_create(struct posix_acl **acl, gfp_t gfp, umode_t *mode_p) *acl = clone; return err; } -EXPORT_SYMBOL(posix_acl_create); +EXPORT_SYMBOL(__posix_acl_create); int -posix_acl_chmod(struct posix_acl **acl, gfp_t gfp, umode_t mode) +__posix_acl_chmod(struct posix_acl **acl, gfp_t gfp, umode_t mode) { struct posix_acl *clone = posix_acl_clone(*acl, gfp); int err = -ENOMEM; if (clone) { - err = posix_acl_chmod_masq(clone, mode); + err = __posix_acl_chmod_masq(clone, mode); if (err) { posix_acl_release(clone); clone = NULL; @@ -417,4 +507,389 @@ posix_acl_chmod(struct posix_acl **acl, gfp_t gfp, umode_t mode) *acl = clone; return err; } +EXPORT_SYMBOL(__posix_acl_chmod); + +int +posix_acl_chmod(struct inode *inode, umode_t mode) +{ + struct posix_acl *acl; + int ret = 0; + + if (!IS_POSIXACL(inode)) + return 0; + if (!inode->i_op->set_acl) + return -EOPNOTSUPP; + + acl = get_acl(inode, ACL_TYPE_ACCESS); + if (IS_ERR_OR_NULL(acl)) { + if (acl == ERR_PTR(-EOPNOTSUPP)) + return 0; + return PTR_ERR(acl); + } + + ret = __posix_acl_chmod(&acl, GFP_KERNEL, mode); + if (ret) + return ret; + ret = inode->i_op->set_acl(inode, acl, ACL_TYPE_ACCESS); + posix_acl_release(acl); + return ret; +} EXPORT_SYMBOL(posix_acl_chmod); + +int +posix_acl_create(struct inode *dir, umode_t *mode, + struct posix_acl **default_acl, struct posix_acl **acl) +{ + struct posix_acl *p; + int ret; + + if (S_ISLNK(*mode) || !IS_POSIXACL(dir)) + goto no_acl; + + p = get_acl(dir, ACL_TYPE_DEFAULT); + if (IS_ERR(p)) { + if (p == ERR_PTR(-EOPNOTSUPP)) + goto apply_umask; + return PTR_ERR(p); + } + + if (!p) + goto apply_umask; + + *acl = posix_acl_clone(p, GFP_NOFS); + if (!*acl) + return -ENOMEM; + + ret = posix_acl_create_masq(*acl, mode); + if (ret < 0) { + posix_acl_release(*acl); + return -ENOMEM; + } + + if (ret == 0) { + posix_acl_release(*acl); + *acl = NULL; + } + + if (!S_ISDIR(*mode)) { + posix_acl_release(p); + *default_acl = NULL; + } else { + *default_acl = p; + } + return 0; + +apply_umask: + *mode &= ~current_umask(); +no_acl: + *default_acl = NULL; + *acl = NULL; + return 0; +} +EXPORT_SYMBOL_GPL(posix_acl_create); + +/* + * Fix up the uids and gids in posix acl extended attributes in place. + */ +static void posix_acl_fix_xattr_userns( + struct user_namespace *to, struct user_namespace *from, + void *value, size_t size) +{ + posix_acl_xattr_header *header = (posix_acl_xattr_header *)value; + posix_acl_xattr_entry *entry = (posix_acl_xattr_entry *)(header+1), *end; + int count; + kuid_t uid; + kgid_t gid; + + if (!value) + return; + if (size < sizeof(posix_acl_xattr_header)) + return; + if (header->a_version != cpu_to_le32(POSIX_ACL_XATTR_VERSION)) + return; + + count = posix_acl_xattr_count(size); + if (count < 0) + return; + if (count == 0) + return; + + for (end = entry + count; entry != end; entry++) { + switch(le16_to_cpu(entry->e_tag)) { + case ACL_USER: + uid = make_kuid(from, le32_to_cpu(entry->e_id)); + entry->e_id = cpu_to_le32(from_kuid(to, uid)); + break; + case ACL_GROUP: + gid = make_kgid(from, le32_to_cpu(entry->e_id)); + entry->e_id = cpu_to_le32(from_kgid(to, gid)); + break; + default: + break; + } + } +} + +void posix_acl_fix_xattr_from_user(void *value, size_t size) +{ + struct user_namespace *user_ns = current_user_ns(); + if (user_ns == &init_user_ns) + return; + posix_acl_fix_xattr_userns(&init_user_ns, user_ns, value, size); +} + +void posix_acl_fix_xattr_to_user(void *value, size_t size) +{ + struct user_namespace *user_ns = current_user_ns(); + if (user_ns == &init_user_ns) + return; + posix_acl_fix_xattr_userns(user_ns, &init_user_ns, value, size); +} + +/* + * Convert from extended attribute to in-memory representation. + */ +struct posix_acl * +posix_acl_from_xattr(struct user_namespace *user_ns, + const void *value, size_t size) +{ + posix_acl_xattr_header *header = (posix_acl_xattr_header *)value; + posix_acl_xattr_entry *entry = (posix_acl_xattr_entry *)(header+1), *end; + int count; + struct posix_acl *acl; + struct posix_acl_entry *acl_e; + + if (!value) + return NULL; + if (size < sizeof(posix_acl_xattr_header)) + return ERR_PTR(-EINVAL); + if (header->a_version != cpu_to_le32(POSIX_ACL_XATTR_VERSION)) + return ERR_PTR(-EOPNOTSUPP); + + count = posix_acl_xattr_count(size); + if (count < 0) + return ERR_PTR(-EINVAL); + if (count == 0) + return NULL; + + acl = posix_acl_alloc(count, GFP_NOFS); + if (!acl) + return ERR_PTR(-ENOMEM); + acl_e = acl->a_entries; + + for (end = entry + count; entry != end; acl_e++, entry++) { + acl_e->e_tag = le16_to_cpu(entry->e_tag); + acl_e->e_perm = le16_to_cpu(entry->e_perm); + + switch(acl_e->e_tag) { + case ACL_USER_OBJ: + case ACL_GROUP_OBJ: + case ACL_MASK: + case ACL_OTHER: + break; + + case ACL_USER: + acl_e->e_uid = + make_kuid(user_ns, + le32_to_cpu(entry->e_id)); + if (!uid_valid(acl_e->e_uid)) + goto fail; + break; + case ACL_GROUP: + acl_e->e_gid = + make_kgid(user_ns, + le32_to_cpu(entry->e_id)); + if (!gid_valid(acl_e->e_gid)) + goto fail; + break; + + default: + goto fail; + } + } + return acl; + +fail: + posix_acl_release(acl); + return ERR_PTR(-EINVAL); +} +EXPORT_SYMBOL (posix_acl_from_xattr); + +/* + * Convert from in-memory to extended attribute representation. + */ +int +posix_acl_to_xattr(struct user_namespace *user_ns, const struct posix_acl *acl, + void *buffer, size_t size) +{ + posix_acl_xattr_header *ext_acl = (posix_acl_xattr_header *)buffer; + posix_acl_xattr_entry *ext_entry; + int real_size, n; + + real_size = posix_acl_xattr_size(acl->a_count); + if (!buffer) + return real_size; + if (real_size > size) + return -ERANGE; + + ext_entry = ext_acl->a_entries; + ext_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); + + for (n=0; n < acl->a_count; n++, ext_entry++) { + const struct posix_acl_entry *acl_e = &acl->a_entries[n]; + ext_entry->e_tag = cpu_to_le16(acl_e->e_tag); + ext_entry->e_perm = cpu_to_le16(acl_e->e_perm); + switch(acl_e->e_tag) { + case ACL_USER: + ext_entry->e_id = + cpu_to_le32(from_kuid(user_ns, acl_e->e_uid)); + break; + case ACL_GROUP: + ext_entry->e_id = + cpu_to_le32(from_kgid(user_ns, acl_e->e_gid)); + break; + default: + ext_entry->e_id = cpu_to_le32(ACL_UNDEFINED_ID); + break; + } + } + return real_size; +} +EXPORT_SYMBOL (posix_acl_to_xattr); + +static int +posix_acl_xattr_get(struct dentry *dentry, const char *name, + void *value, size_t size, int type) +{ + struct posix_acl *acl; + int error; + + if (!IS_POSIXACL(dentry->d_inode)) + return -EOPNOTSUPP; + if (S_ISLNK(dentry->d_inode->i_mode)) + return -EOPNOTSUPP; + + acl = get_acl(dentry->d_inode, type); + if (IS_ERR(acl)) + return PTR_ERR(acl); + if (acl == NULL) + return -ENODATA; + + error = posix_acl_to_xattr(&init_user_ns, acl, value, size); + posix_acl_release(acl); + + return error; +} + +static int +posix_acl_xattr_set(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags, int type) +{ + struct inode *inode = dentry->d_inode; + struct posix_acl *acl = NULL; + int ret; + + if (!IS_POSIXACL(inode)) + return -EOPNOTSUPP; + if (!inode->i_op->set_acl) + return -EOPNOTSUPP; + + if (type == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode)) + return value ? -EACCES : 0; + if (!inode_owner_or_capable(inode)) + return -EPERM; + + if (value) { + acl = posix_acl_from_xattr(&init_user_ns, value, size); + if (IS_ERR(acl)) + return PTR_ERR(acl); + + if (acl) { + ret = posix_acl_valid(acl); + if (ret) + goto out; + } + } + + ret = inode->i_op->set_acl(inode, acl, type); +out: + posix_acl_release(acl); + return ret; +} + +static size_t +posix_acl_xattr_list(struct dentry *dentry, char *list, size_t list_size, + const char *name, size_t name_len, int type) +{ + const char *xname; + size_t size; + + if (!IS_POSIXACL(dentry->d_inode)) + return -EOPNOTSUPP; + if (S_ISLNK(dentry->d_inode->i_mode)) + return -EOPNOTSUPP; + + if (type == ACL_TYPE_ACCESS) + xname = POSIX_ACL_XATTR_ACCESS; + else + xname = POSIX_ACL_XATTR_DEFAULT; + + size = strlen(xname) + 1; + if (list && size <= list_size) + memcpy(list, xname, size); + return size; +} + +const struct xattr_handler posix_acl_access_xattr_handler = { + .prefix = POSIX_ACL_XATTR_ACCESS, + .flags = ACL_TYPE_ACCESS, + .list = posix_acl_xattr_list, + .get = posix_acl_xattr_get, + .set = posix_acl_xattr_set, +}; +EXPORT_SYMBOL_GPL(posix_acl_access_xattr_handler); + +const struct xattr_handler posix_acl_default_xattr_handler = { + .prefix = POSIX_ACL_XATTR_DEFAULT, + .flags = ACL_TYPE_DEFAULT, + .list = posix_acl_xattr_list, + .get = posix_acl_xattr_get, + .set = posix_acl_xattr_set, +}; +EXPORT_SYMBOL_GPL(posix_acl_default_xattr_handler); + +int simple_set_acl(struct inode *inode, struct posix_acl *acl, int type) +{ + int error; + + if (type == ACL_TYPE_ACCESS) { + error = posix_acl_equiv_mode(acl, &inode->i_mode); + if (error < 0) + return 0; + if (error == 0) + acl = NULL; + } + + inode->i_ctime = CURRENT_TIME; + set_cached_acl(inode, type, acl); + return 0; +} + +int simple_acl_create(struct inode *dir, struct inode *inode) +{ + struct posix_acl *default_acl, *acl; + int error; + + error = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl); + if (error) + return error; + + set_cached_acl(inode, ACL_TYPE_DEFAULT, default_acl); + set_cached_acl(inode, ACL_TYPE_ACCESS, acl); + + if (default_acl) + posix_acl_release(default_acl); + if (acl) + posix_acl_release(acl); + return 0; +} diff --git a/fs/proc/Makefile b/fs/proc/Makefile index ab30716584f5..239493ec718e 100644 --- a/fs/proc/Makefile +++ b/fs/proc/Makefile @@ -27,6 +27,5 @@ proc-$(CONFIG_PROC_SYSCTL) += proc_sysctl.o proc-$(CONFIG_NET) += proc_net.o proc-$(CONFIG_PROC_KCORE) += kcore.o proc-$(CONFIG_PROC_VMCORE) += vmcore.o -proc-$(CONFIG_PROC_DEVICETREE) += proc_devtree.o proc-$(CONFIG_PRINTK) += kmsg.o proc-$(CONFIG_PROC_PAGE_MONITOR) += page.o diff --git a/fs/proc/array.c b/fs/proc/array.c index 1bd2077187fd..64db2bceac59 100644 --- a/fs/proc/array.c +++ b/fs/proc/array.c @@ -138,26 +138,17 @@ static const char * const task_state_array[] = { "D (disk sleep)", /* 2 */ "T (stopped)", /* 4 */ "t (tracing stop)", /* 8 */ - "Z (zombie)", /* 16 */ - "X (dead)", /* 32 */ - "x (dead)", /* 64 */ - "K (wakekill)", /* 128 */ - "W (waking)", /* 256 */ - "P (parked)", /* 512 */ + "X (dead)", /* 16 */ + "Z (zombie)", /* 32 */ }; static inline const char *get_task_state(struct task_struct *tsk) { - unsigned int state = (tsk->state & TASK_REPORT) | tsk->exit_state; - const char * const *p = &task_state_array[0]; + unsigned int state = (tsk->state | tsk->exit_state) & TASK_REPORT; - BUILD_BUG_ON(1 + ilog2(TASK_STATE_MAX) != ARRAY_SIZE(task_state_array)); + BUILD_BUG_ON(1 + ilog2(TASK_REPORT) != ARRAY_SIZE(task_state_array)-1); - while (state) { - p++; - state >>= 1; - } - return *p; + return task_state_array[fls(state)]; } static inline void task_state(struct seq_file *m, struct pid_namespace *ns, @@ -453,8 +444,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns, min_flt += t->min_flt; maj_flt += t->maj_flt; gtime += task_gtime(t); - t = next_thread(t); - } while (t != task); + } while_each_thread(task, t); min_flt += sig->min_flt; maj_flt += sig->maj_flt; diff --git a/fs/proc/base.c b/fs/proc/base.c index 03c8d747be48..6b7087e2e8fb 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -1236,6 +1236,9 @@ static ssize_t proc_fault_inject_write(struct file * file, make_it_fail = simple_strtol(strstrip(buffer), &end, 0); if (*end) return -EINVAL; + if (make_it_fail < 0 || make_it_fail > 1) + return -EINVAL; + task = get_proc_task(file_inode(file)); if (!task) return -ESRCH; @@ -1658,13 +1661,18 @@ int pid_revalidate(struct dentry *dentry, unsigned int flags) return 0; } +static inline bool proc_inode_is_dead(struct inode *inode) +{ + return !proc_pid(inode)->tasks[PIDTYPE_PID].first; +} + int pid_delete_dentry(const struct dentry *dentry) { /* Is the task we represent dead? * If so, then don't put the dentry on the lru list, * kill it immediately. */ - return !proc_pid(dentry->d_inode)->tasks[PIDTYPE_PID].first; + return proc_inode_is_dead(dentry->d_inode); } const struct dentry_operations pid_dentry_operations = @@ -1819,6 +1827,7 @@ static int proc_map_files_get_link(struct dentry *dentry, struct path *path) if (rc) goto out_mmput; + rc = -ENOENT; down_read(&mm->mmap_sem); vma = find_exact_vma(mm, vm_start, vm_end); if (vma && vma->vm_file) { @@ -2582,7 +2591,7 @@ static const struct pid_entry tgid_base_stuff[] = { REG("environ", S_IRUSR, proc_environ_operations), INF("auxv", S_IRUSR, proc_pid_auxv), ONE("status", S_IRUGO, proc_pid_status), - ONE("personality", S_IRUGO, proc_pid_personality), + ONE("personality", S_IRUSR, proc_pid_personality), INF("limits", S_IRUGO, proc_pid_limits), #ifdef CONFIG_SCHED_DEBUG REG("sched", S_IRUGO|S_IWUSR, proc_pid_sched_operations), @@ -2592,7 +2601,7 @@ static const struct pid_entry tgid_base_stuff[] = { #endif REG("comm", S_IRUGO|S_IWUSR, proc_pid_set_comm_operations), #ifdef CONFIG_HAVE_ARCH_TRACEHOOK - INF("syscall", S_IRUGO, proc_pid_syscall), + INF("syscall", S_IRUSR, proc_pid_syscall), #endif INF("cmdline", S_IRUGO, proc_pid_cmdline), ONE("stat", S_IRUGO, proc_tgid_stat), @@ -2611,7 +2620,7 @@ static const struct pid_entry tgid_base_stuff[] = { #ifdef CONFIG_PROC_PAGE_MONITOR REG("clear_refs", S_IWUSR, proc_clear_refs_operations), REG("smaps", S_IRUGO, proc_pid_smaps_operations), - REG("pagemap", S_IRUGO, proc_pagemap_operations), + REG("pagemap", S_IRUSR, proc_pagemap_operations), #endif #ifdef CONFIG_SECURITY DIR("attr", S_IRUGO|S_IXUGO, proc_attr_dir_inode_operations, proc_attr_dir_operations), @@ -2620,7 +2629,7 @@ static const struct pid_entry tgid_base_stuff[] = { INF("wchan", S_IRUGO, proc_pid_wchan), #endif #ifdef CONFIG_STACKTRACE - ONE("stack", S_IRUGO, proc_pid_stack), + ONE("stack", S_IRUSR, proc_pid_stack), #endif #ifdef CONFIG_SCHEDSTATS INF("schedstat", S_IRUGO, proc_pid_schedstat), @@ -2921,14 +2930,14 @@ static const struct pid_entry tid_base_stuff[] = { REG("environ", S_IRUSR, proc_environ_operations), INF("auxv", S_IRUSR, proc_pid_auxv), ONE("status", S_IRUGO, proc_pid_status), - ONE("personality", S_IRUGO, proc_pid_personality), + ONE("personality", S_IRUSR, proc_pid_personality), INF("limits", S_IRUGO, proc_pid_limits), #ifdef CONFIG_SCHED_DEBUG REG("sched", S_IRUGO|S_IWUSR, proc_pid_sched_operations), #endif REG("comm", S_IRUGO|S_IWUSR, proc_pid_set_comm_operations), #ifdef CONFIG_HAVE_ARCH_TRACEHOOK - INF("syscall", S_IRUGO, proc_pid_syscall), + INF("syscall", S_IRUSR, proc_pid_syscall), #endif INF("cmdline", S_IRUGO, proc_pid_cmdline), ONE("stat", S_IRUGO, proc_tid_stat), @@ -2949,7 +2958,7 @@ static const struct pid_entry tid_base_stuff[] = { #ifdef CONFIG_PROC_PAGE_MONITOR REG("clear_refs", S_IWUSR, proc_clear_refs_operations), REG("smaps", S_IRUGO, proc_tid_smaps_operations), - REG("pagemap", S_IRUGO, proc_pagemap_operations), + REG("pagemap", S_IRUSR, proc_pagemap_operations), #endif #ifdef CONFIG_SECURITY DIR("attr", S_IRUGO|S_IXUGO, proc_attr_dir_inode_operations, proc_attr_dir_operations), @@ -2958,7 +2967,7 @@ static const struct pid_entry tid_base_stuff[] = { INF("wchan", S_IRUGO, proc_pid_wchan), #endif #ifdef CONFIG_STACKTRACE - ONE("stack", S_IRUGO, proc_pid_stack), + ONE("stack", S_IRUSR, proc_pid_stack), #endif #ifdef CONFIG_SCHEDSTATS INF("schedstat", S_IRUGO, proc_pid_schedstat), @@ -3092,34 +3101,42 @@ out_no_task: * In the case of a seek we start with the leader and walk nr * threads past it. */ -static struct task_struct *first_tid(struct task_struct *leader, - int tid, int nr, struct pid_namespace *ns) +static struct task_struct *first_tid(struct pid *pid, int tid, loff_t f_pos, + struct pid_namespace *ns) { - struct task_struct *pos; + struct task_struct *pos, *task; + unsigned long nr = f_pos; + + if (nr != f_pos) /* 32bit overflow? */ + return NULL; rcu_read_lock(); - /* Attempt to start with the pid of a thread */ - if (tid && (nr > 0)) { + task = pid_task(pid, PIDTYPE_PID); + if (!task) + goto fail; + + /* Attempt to start with the tid of a thread */ + if (tid && nr) { pos = find_task_by_pid_ns(tid, ns); - if (pos && (pos->group_leader == leader)) + if (pos && same_thread_group(pos, task)) goto found; } /* If nr exceeds the number of threads there is nothing todo */ - pos = NULL; - if (nr && nr >= get_nr_threads(leader)) - goto out; + if (nr >= get_nr_threads(task)) + goto fail; /* If we haven't found our starting place yet start * with the leader and walk nr threads forward. */ - for (pos = leader; nr > 0; --nr) { - pos = next_thread(pos); - if (pos == leader) { - pos = NULL; - goto out; - } - } + pos = task = task->group_leader; + do { + if (!nr--) + goto found; + } while_each_thread(task, pos); +fail: + pos = NULL; + goto out; found: get_task_struct(pos); out: @@ -3152,25 +3169,16 @@ static struct task_struct *next_tid(struct task_struct *start) /* for the /proc/TGID/task/ directories */ static int proc_task_readdir(struct file *file, struct dir_context *ctx) { - struct task_struct *leader = NULL; - struct task_struct *task = get_proc_task(file_inode(file)); + struct inode *inode = file_inode(file); + struct task_struct *task; struct pid_namespace *ns; int tid; - if (!task) - return -ENOENT; - rcu_read_lock(); - if (pid_alive(task)) { - leader = task->group_leader; - get_task_struct(leader); - } - rcu_read_unlock(); - put_task_struct(task); - if (!leader) + if (proc_inode_is_dead(inode)) return -ENOENT; if (!dir_emit_dots(file, ctx)) - goto out; + return 0; /* f_version caches the tgid value that the last readdir call couldn't * return. lseek aka telldir automagically resets f_version to 0. @@ -3178,7 +3186,7 @@ static int proc_task_readdir(struct file *file, struct dir_context *ctx) ns = file->f_dentry->d_sb->s_fs_info; tid = (int)file->f_version; file->f_version = 0; - for (task = first_tid(leader, tid, ctx->pos - 2, ns); + for (task = first_tid(proc_pid(inode), tid, ctx->pos - 2, ns); task; task = next_tid(task), ctx->pos++) { char name[PROC_NUMBUF]; @@ -3194,8 +3202,7 @@ static int proc_task_readdir(struct file *file, struct dir_context *ctx) break; } } -out: - put_task_struct(leader); + return 0; } diff --git a/fs/proc/cmdline.c b/fs/proc/cmdline.c index 82676e3fcd1d..cbd82dff7e81 100644 --- a/fs/proc/cmdline.c +++ b/fs/proc/cmdline.c @@ -26,4 +26,4 @@ static int __init proc_cmdline_init(void) proc_create("cmdline", 0, NULL, &cmdline_proc_fops); return 0; } -module_init(proc_cmdline_init); +fs_initcall(proc_cmdline_init); diff --git a/fs/proc/consoles.c b/fs/proc/consoles.c index 51942d5abcec..290ba85cb900 100644 --- a/fs/proc/consoles.c +++ b/fs/proc/consoles.c @@ -109,4 +109,4 @@ static int __init proc_consoles_init(void) proc_create("consoles", 0, NULL, &proc_consoles_operations); return 0; } -module_init(proc_consoles_init); +fs_initcall(proc_consoles_init); diff --git a/fs/proc/cpuinfo.c b/fs/proc/cpuinfo.c index 5a1e539a234b..06f4d31e0396 100644 --- a/fs/proc/cpuinfo.c +++ b/fs/proc/cpuinfo.c @@ -21,4 +21,4 @@ static int __init proc_cpuinfo_init(void) proc_create("cpuinfo", 0, NULL, &proc_cpuinfo_operations); return 0; } -module_init(proc_cpuinfo_init); +fs_initcall(proc_cpuinfo_init); diff --git a/fs/proc/devices.c b/fs/proc/devices.c index b14347167c35..50493edc30e5 100644 --- a/fs/proc/devices.c +++ b/fs/proc/devices.c @@ -67,4 +67,4 @@ static int __init proc_devices_init(void) proc_create("devices", 0, NULL, &proc_devinfo_operations); return 0; } -module_init(proc_devices_init); +fs_initcall(proc_devices_init); diff --git a/fs/proc/fd.c b/fs/proc/fd.c index 985ea881b5bc..0788d093f5d8 100644 --- a/fs/proc/fd.c +++ b/fs/proc/fd.c @@ -11,6 +11,7 @@ #include <linux/proc_fs.h> +#include "../mount.h" #include "internal.h" #include "fd.h" @@ -48,8 +49,9 @@ static int seq_show(struct seq_file *m, void *v) } if (!ret) { - seq_printf(m, "pos:\t%lli\nflags:\t0%o\n", - (long long)file->f_pos, f_flags); + seq_printf(m, "pos:\t%lli\nflags:\t0%o\nmnt_id:\t%i\n", + (long long)file->f_pos, f_flags, + real_mount(file->f_path.mnt)->mnt_id); if (file->f_op->show_fdinfo) ret = file->f_op->show_fdinfo(m, file); fput(file); diff --git a/fs/proc/generic.c b/fs/proc/generic.c index cca93b6fb9a9..b7f268eb5f45 100644 --- a/fs/proc/generic.c +++ b/fs/proc/generic.c @@ -49,8 +49,7 @@ static int proc_notify_change(struct dentry *dentry, struct iattr *iattr) setattr_copy(inode, iattr); mark_inode_dirty(inode); - de->uid = inode->i_uid; - de->gid = inode->i_gid; + proc_set_user(de, inode->i_uid, inode->i_gid); de->mode = inode->i_mode; return 0; } diff --git a/fs/proc/inode.c b/fs/proc/inode.c index 124fc43c7090..0adbc02d60e3 100644 --- a/fs/proc/inode.c +++ b/fs/proc/inode.c @@ -35,7 +35,7 @@ static void proc_evict_inode(struct inode *inode) const struct proc_ns_operations *ns_ops; void *ns; - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); /* Stop tracking associated processes */ @@ -47,7 +47,7 @@ static void proc_evict_inode(struct inode *inode) pde_put(de); head = PROC_I(inode)->sysctl; if (head) { - rcu_assign_pointer(PROC_I(inode)->sysctl, NULL); + RCU_INIT_POINTER(PROC_I(inode)->sysctl, NULL); sysctl_head_put(head); } /* Release any associated namespace */ diff --git a/fs/proc/internal.h b/fs/proc/internal.h index 651d09a11dde..3ab6d14e71c5 100644 --- a/fs/proc/internal.h +++ b/fs/proc/internal.h @@ -211,13 +211,6 @@ extern int proc_fill_super(struct super_block *); extern void proc_entry_rundown(struct proc_dir_entry *); /* - * proc_devtree.c - */ -#ifdef CONFIG_PROC_DEVICETREE -extern void proc_device_tree_init(void); -#endif - -/* * proc_namespaces.c */ extern const struct inode_operations proc_ns_dir_inode_operations; diff --git a/fs/proc/interrupts.c b/fs/proc/interrupts.c index 05029c0e2f24..a352d5703b41 100644 --- a/fs/proc/interrupts.c +++ b/fs/proc/interrupts.c @@ -50,4 +50,4 @@ static int __init proc_interrupts_init(void) proc_create("interrupts", 0, NULL, &proc_interrupts_operations); return 0; } -module_init(proc_interrupts_init); +fs_initcall(proc_interrupts_init); diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c index 5ed0e52d6aa0..39e6ef32f0bd 100644 --- a/fs/proc/kcore.c +++ b/fs/proc/kcore.c @@ -639,4 +639,4 @@ static int __init proc_kcore_init(void) return 0; } -module_init(proc_kcore_init); +fs_initcall(proc_kcore_init); diff --git a/fs/proc/kmsg.c b/fs/proc/kmsg.c index bdfabdaefdce..05f8dcdb086e 100644 --- a/fs/proc/kmsg.c +++ b/fs/proc/kmsg.c @@ -61,4 +61,4 @@ static int __init proc_kmsg_init(void) proc_create("kmsg", S_IRUSR, NULL, &proc_kmsg_operations); return 0; } -module_init(proc_kmsg_init); +fs_initcall(proc_kmsg_init); diff --git a/fs/proc/loadavg.c b/fs/proc/loadavg.c index 1afa4dd4cae2..aec66e6c2060 100644 --- a/fs/proc/loadavg.c +++ b/fs/proc/loadavg.c @@ -42,4 +42,4 @@ static int __init proc_loadavg_init(void) proc_create("loadavg", 0, NULL, &loadavg_proc_fops); return 0; } -module_init(proc_loadavg_init); +fs_initcall(proc_loadavg_init); diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c index a77d2b299199..7445af0b1aa3 100644 --- a/fs/proc/meminfo.c +++ b/fs/proc/meminfo.c @@ -26,7 +26,11 @@ static int meminfo_proc_show(struct seq_file *m, void *v) unsigned long committed; struct vmalloc_info vmi; long cached; + long available; + unsigned long pagecache; + unsigned long wmark_low = 0; unsigned long pages[NR_LRU_LISTS]; + struct zone *zone; int lru; /* @@ -47,12 +51,44 @@ static int meminfo_proc_show(struct seq_file *m, void *v) for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++) pages[lru] = global_page_state(NR_LRU_BASE + lru); + for_each_zone(zone) + wmark_low += zone->watermark[WMARK_LOW]; + + /* + * Estimate the amount of memory available for userspace allocations, + * without causing swapping. + * + * Free memory cannot be taken below the low watermark, before the + * system starts swapping. + */ + available = i.freeram - wmark_low; + + /* + * Not all the page cache can be freed, otherwise the system will + * start swapping. Assume at least half of the page cache, or the + * low watermark worth of cache, needs to stay. + */ + pagecache = pages[LRU_ACTIVE_FILE] + pages[LRU_INACTIVE_FILE]; + pagecache -= min(pagecache / 2, wmark_low); + available += pagecache; + + /* + * Part of the reclaimable slab consists of items that are in use, + * and cannot be freed. Cap this estimate at the low watermark. + */ + available += global_page_state(NR_SLAB_RECLAIMABLE) - + min(global_page_state(NR_SLAB_RECLAIMABLE) / 2, wmark_low); + + if (available < 0) + available = 0; + /* * Tagged format, for easy grepping and expansion. */ seq_printf(m, "MemTotal: %8lu kB\n" "MemFree: %8lu kB\n" + "MemAvailable: %8lu kB\n" "Buffers: %8lu kB\n" "Cached: %8lu kB\n" "SwapCached: %8lu kB\n" @@ -105,6 +141,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v) , K(i.totalram), K(i.freeram), + K(available), K(i.bufferram), K(cached), K(total_swapcache_pages()), @@ -183,4 +220,4 @@ static int __init proc_meminfo_init(void) proc_create("meminfo", 0, NULL, &meminfo_proc_fops); return 0; } -module_init(proc_meminfo_init); +fs_initcall(proc_meminfo_init); diff --git a/fs/proc/nommu.c b/fs/proc/nommu.c index 5f9bc8a746c9..d4a35746cab9 100644 --- a/fs/proc/nommu.c +++ b/fs/proc/nommu.c @@ -131,4 +131,4 @@ static int __init proc_nommu_init(void) return 0; } -module_init(proc_nommu_init); +fs_initcall(proc_nommu_init); diff --git a/fs/proc/page.c b/fs/proc/page.c index b8730d9ebaee..e647c55275d9 100644 --- a/fs/proc/page.c +++ b/fs/proc/page.c @@ -118,10 +118,11 @@ u64 stable_page_flags(struct page *page) /* * PageTransCompound can be true for non-huge compound pages (slab * pages or pages allocated by drivers with __GFP_COMP) because it - * just checks PG_head/PG_tail, so we need to check PageLRU to make - * sure a given page is a thp, not a non-huge compound page. + * just checks PG_head/PG_tail, so we need to check PageLRU/PageAnon + * to make sure a given page is a thp, not a non-huge compound page. */ - else if (PageTransCompound(page) && PageLRU(compound_trans_head(page))) + else if (PageTransCompound(page) && (PageLRU(compound_head(page)) || + PageAnon(compound_head(page)))) u |= 1 << KPF_THP; /* @@ -217,4 +218,4 @@ static int __init proc_page_init(void) proc_create("kpageflags", S_IRUSR, NULL, &proc_kpageflags_operations); return 0; } -module_init(proc_page_init); +fs_initcall(proc_page_init); diff --git a/fs/proc/proc_devtree.c b/fs/proc/proc_devtree.c deleted file mode 100644 index 70779b2fc209..000000000000 --- a/fs/proc/proc_devtree.c +++ /dev/null @@ -1,240 +0,0 @@ -/* - * proc_devtree.c - handles /proc/device-tree - * - * Copyright 1997 Paul Mackerras - */ -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/time.h> -#include <linux/proc_fs.h> -#include <linux/seq_file.h> -#include <linux/printk.h> -#include <linux/stat.h> -#include <linux/string.h> -#include <linux/of.h> -#include <linux/export.h> -#include <linux/slab.h> -#include <asm/uaccess.h> -#include "internal.h" - -static inline void set_node_proc_entry(struct device_node *np, - struct proc_dir_entry *de) -{ - np->pde = de; -} - -static struct proc_dir_entry *proc_device_tree; - -/* - * Supply data on a read from /proc/device-tree/node/property. - */ -static int property_proc_show(struct seq_file *m, void *v) -{ - struct property *pp = m->private; - - seq_write(m, pp->value, pp->length); - return 0; -} - -static int property_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, property_proc_show, __PDE_DATA(inode)); -} - -static const struct file_operations property_proc_fops = { - .owner = THIS_MODULE, - .open = property_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -/* - * For a node with a name like "gc@10", we make symlinks called "gc" - * and "@10" to it. - */ - -/* - * Add a property to a node - */ -static struct proc_dir_entry * -__proc_device_tree_add_prop(struct proc_dir_entry *de, struct property *pp, - const char *name) -{ - struct proc_dir_entry *ent; - - /* - * Unfortunately proc_register puts each new entry - * at the beginning of the list. So we rearrange them. - */ - ent = proc_create_data(name, - strncmp(name, "security-", 9) ? S_IRUGO : S_IRUSR, - de, &property_proc_fops, pp); - if (ent == NULL) - return NULL; - - if (!strncmp(name, "security-", 9)) - ent->size = 0; /* don't leak number of password chars */ - else - ent->size = pp->length; - - return ent; -} - - -void proc_device_tree_add_prop(struct proc_dir_entry *pde, struct property *prop) -{ - __proc_device_tree_add_prop(pde, prop, prop->name); -} - -void proc_device_tree_remove_prop(struct proc_dir_entry *pde, - struct property *prop) -{ - remove_proc_entry(prop->name, pde); -} - -void proc_device_tree_update_prop(struct proc_dir_entry *pde, - struct property *newprop, - struct property *oldprop) -{ - struct proc_dir_entry *ent; - - if (!oldprop) { - proc_device_tree_add_prop(pde, newprop); - return; - } - - for (ent = pde->subdir; ent != NULL; ent = ent->next) - if (ent->data == oldprop) - break; - if (ent == NULL) { - pr_warn("device-tree: property \"%s\" does not exist\n", - oldprop->name); - } else { - ent->data = newprop; - ent->size = newprop->length; - } -} - -/* - * Various dodgy firmware might give us nodes and/or properties with - * conflicting names. That's generally ok, except for exporting via /proc, - * so munge names here to ensure they're unique. - */ - -static int duplicate_name(struct proc_dir_entry *de, const char *name) -{ - struct proc_dir_entry *ent; - int found = 0; - - spin_lock(&proc_subdir_lock); - - for (ent = de->subdir; ent != NULL; ent = ent->next) { - if (strcmp(ent->name, name) == 0) { - found = 1; - break; - } - } - - spin_unlock(&proc_subdir_lock); - - return found; -} - -static const char *fixup_name(struct device_node *np, struct proc_dir_entry *de, - const char *name) -{ - char *fixed_name; - int fixup_len = strlen(name) + 2 + 1; /* name + #x + \0 */ - int i = 1, size; - -realloc: - fixed_name = kmalloc(fixup_len, GFP_KERNEL); - if (fixed_name == NULL) { - pr_err("device-tree: Out of memory trying to fixup " - "name \"%s\"\n", name); - return name; - } - -retry: - size = snprintf(fixed_name, fixup_len, "%s#%d", name, i); - size++; /* account for NULL */ - - if (size > fixup_len) { - /* We ran out of space, free and reallocate. */ - kfree(fixed_name); - fixup_len = size; - goto realloc; - } - - if (duplicate_name(de, fixed_name)) { - /* Multiple duplicates. Retry with a different offset. */ - i++; - goto retry; - } - - pr_warn("device-tree: Duplicate name in %s, renamed to \"%s\"\n", - np->full_name, fixed_name); - - return fixed_name; -} - -/* - * Process a node, adding entries for its children and its properties. - */ -void proc_device_tree_add_node(struct device_node *np, - struct proc_dir_entry *de) -{ - struct property *pp; - struct proc_dir_entry *ent; - struct device_node *child; - const char *p; - - set_node_proc_entry(np, de); - for (child = NULL; (child = of_get_next_child(np, child));) { - /* Use everything after the last slash, or the full name */ - p = kbasename(child->full_name); - - if (duplicate_name(de, p)) - p = fixup_name(np, de, p); - - ent = proc_mkdir(p, de); - if (ent == NULL) - break; - proc_device_tree_add_node(child, ent); - } - of_node_put(child); - - for (pp = np->properties; pp != NULL; pp = pp->next) { - p = pp->name; - - if (strchr(p, '/')) - continue; - - if (duplicate_name(de, p)) - p = fixup_name(np, de, p); - - ent = __proc_device_tree_add_prop(de, pp, p); - if (ent == NULL) - break; - } -} - -/* - * Called on initialization to set up the /proc/device-tree subtree - */ -void __init proc_device_tree_init(void) -{ - struct device_node *root; - - proc_device_tree = proc_mkdir("device-tree", NULL); - if (proc_device_tree == NULL) - return; - root = of_find_node_by_path("/"); - if (root == NULL) { - pr_debug("/proc/device-tree: can't find root\n"); - return; - } - proc_device_tree_add_node(root, proc_device_tree); - of_node_put(root); -} diff --git a/fs/proc/root.c b/fs/proc/root.c index 87dbcbef7fe4..5dbadecb234d 100644 --- a/fs/proc/root.c +++ b/fs/proc/root.c @@ -92,6 +92,8 @@ static int proc_parse_options(char *options, struct pid_namespace *pid) int proc_remount(struct super_block *sb, int *flags, char *data) { struct pid_namespace *pid = sb->s_fs_info; + + sync_filesystem(sb); return !proc_parse_options(data, pid); } @@ -183,9 +185,6 @@ void __init proc_root_init(void) proc_mkdir("openprom", NULL); #endif proc_tty_init(); -#ifdef CONFIG_PROC_DEVICETREE - proc_device_tree_init(); -#endif proc_mkdir("bus", NULL); proc_sys_init(); } diff --git a/fs/proc/softirqs.c b/fs/proc/softirqs.c index 62604be9f58d..ad8a77f94beb 100644 --- a/fs/proc/softirqs.c +++ b/fs/proc/softirqs.c @@ -41,4 +41,4 @@ static int __init proc_softirqs_init(void) proc_create("softirqs", 0, NULL, &proc_softirqs_operations); return 0; } -module_init(proc_softirqs_init); +fs_initcall(proc_softirqs_init); diff --git a/fs/proc/stat.c b/fs/proc/stat.c index 1cf86c0e8689..9d231e9e5f0e 100644 --- a/fs/proc/stat.c +++ b/fs/proc/stat.c @@ -9,7 +9,7 @@ #include <linux/slab.h> #include <linux/time.h> #include <linux/irqnr.h> -#include <asm/cputime.h> +#include <linux/cputime.h> #include <linux/tick.h> #ifndef arch_irq_stat_cpu @@ -221,4 +221,4 @@ static int __init proc_stat_init(void) proc_create("stat", 0, NULL, &proc_stat_operations); return 0; } -module_init(proc_stat_init); +fs_initcall(proc_stat_init); diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index fb52b548080d..442177b1119a 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -1,4 +1,5 @@ #include <linux/mm.h> +#include <linux/vmacache.h> #include <linux/hugetlb.h> #include <linux/huge_mm.h> #include <linux/mount.h> @@ -152,7 +153,7 @@ static void *m_start(struct seq_file *m, loff_t *pos) /* * We remember last_addr rather than next_addr to hit with - * mmap_cache most of the time. We have zero last_addr at + * vmacache most of the time. We have zero last_addr at * the beginning and also after lseek. We will have -1 last_addr * after the end of the vmas. */ diff --git a/fs/proc/uptime.c b/fs/proc/uptime.c index 061894625903..33de567c25af 100644 --- a/fs/proc/uptime.c +++ b/fs/proc/uptime.c @@ -5,7 +5,7 @@ #include <linux/seq_file.h> #include <linux/time.h> #include <linux/kernel_stat.h> -#include <asm/cputime.h> +#include <linux/cputime.h> static int uptime_proc_show(struct seq_file *m, void *v) { @@ -49,4 +49,4 @@ static int __init proc_uptime_init(void) proc_create("uptime", 0, NULL, &uptime_proc_fops); return 0; } -module_init(proc_uptime_init); +fs_initcall(proc_uptime_init); diff --git a/fs/proc/version.c b/fs/proc/version.c index 76817a60678c..d2154eb6d78f 100644 --- a/fs/proc/version.c +++ b/fs/proc/version.c @@ -31,4 +31,4 @@ static int __init proc_version_init(void) proc_create("version", 0, NULL, &version_proc_fops); return 0; } -module_init(proc_version_init); +fs_initcall(proc_version_init); diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c index 9100d6959886..6a8e785b29da 100644 --- a/fs/proc/vmcore.c +++ b/fs/proc/vmcore.c @@ -468,17 +468,23 @@ static int __init update_note_header_size_elf64(const Elf64_Ehdr *ehdr_ptr) return rc; } nhdr_ptr = notes_section; - while (real_sz < max_sz) { - if (nhdr_ptr->n_namesz == 0) - break; + while (nhdr_ptr->n_namesz != 0) { sz = sizeof(Elf64_Nhdr) + ((nhdr_ptr->n_namesz + 3) & ~3) + ((nhdr_ptr->n_descsz + 3) & ~3); + if ((real_sz + sz) > max_sz) { + pr_warn("Warning: Exceeded p_memsz, dropping PT_NOTE entry n_namesz=0x%x, n_descsz=0x%x\n", + nhdr_ptr->n_namesz, nhdr_ptr->n_descsz); + break; + } real_sz += sz; nhdr_ptr = (Elf64_Nhdr*)((char*)nhdr_ptr + sz); } kfree(notes_section); phdr_ptr->p_memsz = real_sz; + if (real_sz == 0) { + pr_warn("Warning: Zero PT_NOTE entries found\n"); + } } return 0; @@ -648,17 +654,23 @@ static int __init update_note_header_size_elf32(const Elf32_Ehdr *ehdr_ptr) return rc; } nhdr_ptr = notes_section; - while (real_sz < max_sz) { - if (nhdr_ptr->n_namesz == 0) - break; + while (nhdr_ptr->n_namesz != 0) { sz = sizeof(Elf32_Nhdr) + ((nhdr_ptr->n_namesz + 3) & ~3) + ((nhdr_ptr->n_descsz + 3) & ~3); + if ((real_sz + sz) > max_sz) { + pr_warn("Warning: Exceeded p_memsz, dropping PT_NOTE entry n_namesz=0x%x, n_descsz=0x%x\n", + nhdr_ptr->n_namesz, nhdr_ptr->n_descsz); + break; + } real_sz += sz; nhdr_ptr = (Elf32_Nhdr*)((char*)nhdr_ptr + sz); } kfree(notes_section); phdr_ptr->p_memsz = real_sz; + if (real_sz == 0) { + pr_warn("Warning: Zero PT_NOTE entries found\n"); + } } return 0; @@ -1082,7 +1094,7 @@ static int __init vmcore_init(void) proc_vmcore->size = vmcore_size; return 0; } -module_init(vmcore_init) +fs_initcall(vmcore_init); /* Cleanup function for vmcore module. */ void vmcore_cleanup(void) @@ -1104,4 +1116,3 @@ void vmcore_cleanup(void) } free_elfcorebuf(); } -EXPORT_SYMBOL_GPL(vmcore_cleanup); diff --git a/fs/proc_namespace.c b/fs/proc_namespace.c index 439406e081af..7be26f03a3f5 100644 --- a/fs/proc_namespace.c +++ b/fs/proc_namespace.c @@ -234,17 +234,12 @@ static int mounts_open_common(struct inode *inode, struct file *file, rcu_read_lock(); nsp = task_nsproxy(task); - if (!nsp) { + if (!nsp || !nsp->mnt_ns) { rcu_read_unlock(); put_task_struct(task); goto err; } ns = nsp->mnt_ns; - if (!ns) { - rcu_read_unlock(); - put_task_struct(task); - goto err; - } get_mnt_ns(ns); rcu_read_unlock(); task_lock(task); diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c index 12823845d324..192297b0090d 100644 --- a/fs/pstore/inode.c +++ b/fs/pstore/inode.c @@ -249,6 +249,7 @@ static void parse_options(char *options) static int pstore_remount(struct super_block *sb, int *flags, char *data) { + sync_filesystem(sb); parse_options(data); return 0; diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index 78c3c2097787..46d269e38706 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -497,6 +497,7 @@ void pstore_get_records(int quiet) big_oops_buf_sz); if (unzipped_len > 0) { + kfree(buf); buf = big_oops_buf; size = unzipped_len; compressed = false; diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c index fa8cef2cca3a..3b5744306ed8 100644 --- a/fs/pstore/ram.c +++ b/fs/pstore/ram.c @@ -86,6 +86,7 @@ struct ramoops_context { struct persistent_ram_ecc_info ecc_info; unsigned int max_dump_cnt; unsigned int dump_write_cnt; + /* _read_cnt need clear on ramoops_pstore_open */ unsigned int dump_read_cnt; unsigned int console_read_cnt; unsigned int ftrace_read_cnt; @@ -101,6 +102,7 @@ static int ramoops_pstore_open(struct pstore_info *psi) cxt->dump_read_cnt = 0; cxt->console_read_cnt = 0; + cxt->ftrace_read_cnt = 0; return 0; } @@ -117,13 +119,15 @@ ramoops_get_next_prz(struct persistent_ram_zone *przs[], uint *c, uint max, return NULL; prz = przs[i]; + if (!prz) + return NULL; - if (update) { - /* Update old/shadowed buffer. */ + /* Update old/shadowed buffer. */ + if (update) persistent_ram_save_old(prz); - if (!persistent_ram_old_size(prz)) - return NULL; - } + + if (!persistent_ram_old_size(prz)) + return NULL; *typep = type; *id = i; @@ -316,6 +320,7 @@ static void ramoops_free_przs(struct ramoops_context *cxt) { int i; + cxt->max_dump_cnt = 0; if (!cxt->przs) return; @@ -346,7 +351,7 @@ static int ramoops_init_przs(struct device *dev, struct ramoops_context *cxt, GFP_KERNEL); if (!cxt->przs) { dev_err(dev, "failed to initialize a prz array for dumps\n"); - return -ENOMEM; + goto fail_prz; } for (i = 0; i < cxt->max_dump_cnt; i++) { @@ -428,7 +433,6 @@ static int ramoops_probe(struct platform_device *pdev) if (pdata->ftrace_size && !is_power_of_2(pdata->ftrace_size)) pdata->ftrace_size = rounddown_pow_of_two(pdata->ftrace_size); - cxt->dump_read_cnt = 0; cxt->size = pdata->mem_size; cxt->phys_addr = pdata->mem_address; cxt->record_size = pdata->record_size; @@ -505,7 +509,6 @@ fail_buf: kfree(cxt->pstore.buf); fail_clear: cxt->pstore.bufsize = 0; - cxt->max_dump_cnt = 0; fail_cnt: kfree(cxt->fprz); fail_init_fprz: diff --git a/fs/pstore/ram_core.c b/fs/pstore/ram_core.c index de272d426763..ff7e3d4df5a1 100644 --- a/fs/pstore/ram_core.c +++ b/fs/pstore/ram_core.c @@ -54,7 +54,7 @@ static size_t buffer_start_add_atomic(struct persistent_ram_zone *prz, size_t a) do { old = atomic_read(&prz->buffer->start); new = old + a; - while (unlikely(new > prz->buffer_size)) + while (unlikely(new >= prz->buffer_size)) new -= prz->buffer_size; } while (atomic_cmpxchg(&prz->buffer->start, old, new) != old); @@ -91,7 +91,7 @@ static size_t buffer_start_add_locked(struct persistent_ram_zone *prz, size_t a) old = atomic_read(&prz->buffer->start); new = old + a; - while (unlikely(new > prz->buffer_size)) + while (unlikely(new >= prz->buffer_size)) new -= prz->buffer_size; atomic_set(&prz->buffer->start, new); diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c index 2e8caa62da78..c4bcb778886e 100644 --- a/fs/qnx4/inode.c +++ b/fs/qnx4/inode.c @@ -27,7 +27,6 @@ static const struct super_operations qnx4_sops; -static void qnx4_put_super(struct super_block *sb); static struct inode *qnx4_alloc_inode(struct super_block *sb); static void qnx4_destroy_inode(struct inode *inode); static int qnx4_remount(struct super_block *sb, int *flags, char *data); @@ -37,7 +36,6 @@ static const struct super_operations qnx4_sops = { .alloc_inode = qnx4_alloc_inode, .destroy_inode = qnx4_destroy_inode, - .put_super = qnx4_put_super, .statfs = qnx4_statfs, .remount_fs = qnx4_remount, }; @@ -46,6 +44,7 @@ static int qnx4_remount(struct super_block *sb, int *flags, char *data) { struct qnx4_sb_info *qs; + sync_filesystem(sb); qs = qnx4_sb(sb); qs->Version = QNX4_VERSION; *flags |= MS_RDONLY; @@ -148,18 +147,19 @@ static int qnx4_statfs(struct dentry *dentry, struct kstatfs *buf) * it really _is_ a qnx4 filesystem, and to check the size * of the directory entry. */ -static const char *qnx4_checkroot(struct super_block *sb) +static const char *qnx4_checkroot(struct super_block *sb, + struct qnx4_super_block *s) { struct buffer_head *bh; struct qnx4_inode_entry *rootdir; int rd, rl; int i, j; - if (*(qnx4_sb(sb)->sb->RootDir.di_fname) != '/') + if (s->RootDir.di_fname[0] != '/' || s->RootDir.di_fname[1] != '\0') return "no qnx4 filesystem (no root dir)."; QNX4DEBUG((KERN_NOTICE "QNX4 filesystem found on dev %s.\n", sb->s_id)); - rd = le32_to_cpu(qnx4_sb(sb)->sb->RootDir.di_first_xtnt.xtnt_blk) - 1; - rl = le32_to_cpu(qnx4_sb(sb)->sb->RootDir.di_first_xtnt.xtnt_size); + rd = le32_to_cpu(s->RootDir.di_first_xtnt.xtnt_blk) - 1; + rl = le32_to_cpu(s->RootDir.di_first_xtnt.xtnt_size); for (j = 0; j < rl; j++) { bh = sb_bread(sb, rd + j); /* root dir, first block */ if (bh == NULL) @@ -189,7 +189,6 @@ static int qnx4_fill_super(struct super_block *s, void *data, int silent) struct inode *root; const char *errmsg; struct qnx4_sb_info *qs; - int ret = -EINVAL; qs = kzalloc(sizeof(struct qnx4_sb_info), GFP_KERNEL); if (!qs) @@ -198,67 +197,50 @@ static int qnx4_fill_super(struct super_block *s, void *data, int silent) sb_set_blocksize(s, QNX4_BLOCK_SIZE); + s->s_op = &qnx4_sops; + s->s_magic = QNX4_SUPER_MAGIC; + s->s_flags |= MS_RDONLY; /* Yup, read-only yet */ + /* Check the superblock signature. Since the qnx4 code is dangerous, we should leave as quickly as possible if we don't belong here... */ bh = sb_bread(s, 1); if (!bh) { printk(KERN_ERR "qnx4: unable to read the superblock\n"); - goto outnobh; + return -EINVAL; } - if ( le32_to_cpup((__le32*) bh->b_data) != QNX4_SUPER_MAGIC ) { - if (!silent) - printk(KERN_ERR "qnx4: wrong fsid in superblock.\n"); - goto out; - } - s->s_op = &qnx4_sops; - s->s_magic = QNX4_SUPER_MAGIC; - s->s_flags |= MS_RDONLY; /* Yup, read-only yet */ - qnx4_sb(s)->sb_buf = bh; - qnx4_sb(s)->sb = (struct qnx4_super_block *) bh->b_data; - /* check before allocating dentries, inodes, .. */ - errmsg = qnx4_checkroot(s); + errmsg = qnx4_checkroot(s, (struct qnx4_super_block *) bh->b_data); + brelse(bh); if (errmsg != NULL) { if (!silent) printk(KERN_ERR "qnx4: %s\n", errmsg); - goto out; + return -EINVAL; } /* does root not have inode number QNX4_ROOT_INO ?? */ root = qnx4_iget(s, QNX4_ROOT_INO * QNX4_INODES_PER_BLOCK); if (IS_ERR(root)) { printk(KERN_ERR "qnx4: get inode failed\n"); - ret = PTR_ERR(root); - goto outb; + return PTR_ERR(root); } - ret = -ENOMEM; s->s_root = d_make_root(root); if (s->s_root == NULL) - goto outb; + return -ENOMEM; - brelse(bh); return 0; - - outb: - kfree(qs->BitMap); - out: - brelse(bh); - outnobh: - kfree(qs); - s->s_fs_info = NULL; - return ret; } -static void qnx4_put_super(struct super_block *sb) +static void qnx4_kill_sb(struct super_block *sb) { struct qnx4_sb_info *qs = qnx4_sb(sb); - kfree( qs->BitMap ); - kfree( qs ); - sb->s_fs_info = NULL; - return; + kill_block_super(sb); + if (qs) { + kfree(qs->BitMap); + kfree(qs); + } } static int qnx4_readpage(struct file *file, struct page *page) @@ -409,7 +391,7 @@ static struct file_system_type qnx4_fs_type = { .owner = THIS_MODULE, .name = "qnx4", .mount = qnx4_mount, - .kill_sb = kill_block_super, + .kill_sb = qnx4_kill_sb, .fs_flags = FS_REQUIRES_DEV, }; MODULE_ALIAS_FS("qnx4"); diff --git a/fs/qnx4/qnx4.h b/fs/qnx4/qnx4.h index 34e2d329c97e..c9b1be2c164d 100644 --- a/fs/qnx4/qnx4.h +++ b/fs/qnx4/qnx4.h @@ -10,8 +10,6 @@ #endif struct qnx4_sb_info { - struct buffer_head *sb_buf; /* superblock buffer */ - struct qnx4_super_block *sb; /* our superblock */ unsigned int Version; /* may be useful */ struct qnx4_inode_entry *BitMap; /* useful */ }; diff --git a/fs/qnx6/inode.c b/fs/qnx6/inode.c index 8d941edfefa1..65cdaab3ed49 100644 --- a/fs/qnx6/inode.c +++ b/fs/qnx6/inode.c @@ -55,6 +55,7 @@ static int qnx6_show_options(struct seq_file *seq, struct dentry *root) static int qnx6_remount(struct super_block *sb, int *flags, char *data) { + sync_filesystem(sb); *flags |= MS_RDONLY; return 0; } diff --git a/fs/quota/Kconfig b/fs/quota/Kconfig index 880fd9884366..c51df1dd237e 100644 --- a/fs/quota/Kconfig +++ b/fs/quota/Kconfig @@ -8,9 +8,10 @@ config QUOTA help If you say Y here, you will be able to set per user limits for disk usage (also called disk quotas). Currently, it works for the - ext2, ext3, and reiserfs file system. ext3 also supports journalled - quotas for which you don't need to run quotacheck(8) after an unclean - shutdown. + ext2, ext3, ext4, jfs, ocfs2 and reiserfs file systems. + Note that gfs2 and xfs use their own quota system. + Ext3, ext4 and reiserfs also support journaled quotas for which + you don't need to run quotacheck(8) after an unclean shutdown. For further details, read the Quota mini-HOWTO, available from <http://www.tldp.org/docs.html#howto>, or the documentation provided with the quota tools. Probably the quota support is only useful for diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 831d49a4111f..9cd5f63715c0 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -528,7 +528,7 @@ restart: if (atomic_read(&dquot->dq_count)) { DEFINE_WAIT(wait); - atomic_inc(&dquot->dq_count); + dqgrab(dquot); prepare_to_wait(&dquot->dq_wait_unused, &wait, TASK_UNINTERRUPTIBLE); spin_unlock(&dq_list_lock); @@ -581,9 +581,17 @@ int dquot_scan_active(struct super_block *sb, dqstats_inc(DQST_LOOKUPS); dqput(old_dquot); old_dquot = dquot; - ret = fn(dquot, priv); - if (ret < 0) - goto out; + /* + * ->release_dquot() can be racing with us. Our reference + * protects us from new calls to it so just wait for any + * outstanding call and recheck the DQ_ACTIVE_B after that. + */ + wait_on_dquot(dquot); + if (test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) { + ret = fn(dquot, priv); + if (ret < 0) + goto out; + } spin_lock(&dq_list_lock); /* We are safe to continue now because our dquot could not * be moved out of the inuse list while we hold the reference */ @@ -624,7 +632,7 @@ int dquot_writeback_dquots(struct super_block *sb, int type) /* Now we have active dquot from which someone is * holding reference so we can safely just increase * use count */ - atomic_inc(&dquot->dq_count); + dqgrab(dquot); spin_unlock(&dq_list_lock); dqstats_inc(DQST_LOOKUPS); err = sb->dq_op->write_dquot(dquot); diff --git a/fs/ramfs/file-mmu.c b/fs/ramfs/file-mmu.c index 4884ac5ae9be..1e56a4e8cf7c 100644 --- a/fs/ramfs/file-mmu.c +++ b/fs/ramfs/file-mmu.c @@ -30,13 +30,6 @@ #include "internal.h" -const struct address_space_operations ramfs_aops = { - .readpage = simple_readpage, - .write_begin = simple_write_begin, - .write_end = simple_write_end, - .set_page_dirty = __set_page_dirty_no_writeback, -}; - const struct file_operations ramfs_file_operations = { .read = do_sync_read, .aio_read = generic_file_aio_read, diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c index 8d5b438cc188..0b3d8e4cb2fa 100644 --- a/fs/ramfs/file-nommu.c +++ b/fs/ramfs/file-nommu.c @@ -27,13 +27,12 @@ #include "internal.h" static int ramfs_nommu_setattr(struct dentry *, struct iattr *); - -const struct address_space_operations ramfs_aops = { - .readpage = simple_readpage, - .write_begin = simple_write_begin, - .write_end = simple_write_end, - .set_page_dirty = __set_page_dirty_no_writeback, -}; +static unsigned long ramfs_nommu_get_unmapped_area(struct file *file, + unsigned long addr, + unsigned long len, + unsigned long pgoff, + unsigned long flags); +static int ramfs_nommu_mmap(struct file *file, struct vm_area_struct *vma); const struct file_operations ramfs_file_operations = { .mmap = ramfs_nommu_mmap, @@ -197,7 +196,7 @@ static int ramfs_nommu_setattr(struct dentry *dentry, struct iattr *ia) * - the pages to be mapped must exist * - the pages be physically contiguous in sequence */ -unsigned long ramfs_nommu_get_unmapped_area(struct file *file, +static unsigned long ramfs_nommu_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) { @@ -256,7 +255,7 @@ out: /* * set up a mapping for shared memory segments */ -int ramfs_nommu_mmap(struct file *file, struct vm_area_struct *vma) +static int ramfs_nommu_mmap(struct file *file, struct vm_area_struct *vma) { if (!(vma->vm_flags & VM_SHARED)) return -ENOSYS; diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c index 39d14659a8d3..d365b1c4eb3c 100644 --- a/fs/ramfs/inode.c +++ b/fs/ramfs/inode.c @@ -43,6 +43,13 @@ static const struct super_operations ramfs_ops; static const struct inode_operations ramfs_dir_inode_operations; +static const struct address_space_operations ramfs_aops = { + .readpage = simple_readpage, + .write_begin = simple_write_begin, + .write_end = simple_write_end, + .set_page_dirty = __set_page_dirty_no_writeback, +}; + static struct backing_dev_info ramfs_backing_dev_info = { .name = "ramfs", .ra_pages = 0, /* No readahead */ @@ -275,4 +282,4 @@ int __init init_ramfs_fs(void) return err; } -module_init(init_ramfs_fs) +fs_initcall(init_ramfs_fs); diff --git a/fs/ramfs/internal.h b/fs/ramfs/internal.h index 6b330639b51d..a9d8ae88fa15 100644 --- a/fs/ramfs/internal.h +++ b/fs/ramfs/internal.h @@ -10,5 +10,4 @@ */ -extern const struct address_space_operations ramfs_aops; extern const struct inode_operations ramfs_file_inode_operations; diff --git a/fs/read_write.c b/fs/read_write.c index 58e440df1bc6..31c6efa43183 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -264,10 +264,22 @@ loff_t vfs_llseek(struct file *file, loff_t offset, int whence) } EXPORT_SYMBOL(vfs_llseek); +static inline struct fd fdget_pos(int fd) +{ + return __to_fd(__fdget_pos(fd)); +} + +static inline void fdput_pos(struct fd f) +{ + if (f.flags & FDPUT_POS_UNLOCK) + mutex_unlock(&f.file->f_pos_lock); + fdput(f); +} + SYSCALL_DEFINE3(lseek, unsigned int, fd, off_t, offset, unsigned int, whence) { off_t retval; - struct fd f = fdget(fd); + struct fd f = fdget_pos(fd); if (!f.file) return -EBADF; @@ -278,7 +290,7 @@ SYSCALL_DEFINE3(lseek, unsigned int, fd, off_t, offset, unsigned int, whence) if (res != (loff_t)retval) retval = -EOVERFLOW; /* LFS: should only happen on 32 bit platforms */ } - fdput(f); + fdput_pos(f); return retval; } @@ -295,7 +307,7 @@ SYSCALL_DEFINE5(llseek, unsigned int, fd, unsigned long, offset_high, unsigned int, whence) { int retval; - struct fd f = fdget(fd); + struct fd f = fdget_pos(fd); loff_t offset; if (!f.file) @@ -315,7 +327,7 @@ SYSCALL_DEFINE5(llseek, unsigned int, fd, unsigned long, offset_high, retval = 0; } out_putf: - fdput(f); + fdput_pos(f); return retval; } #endif @@ -498,7 +510,7 @@ static inline void file_pos_write(struct file *file, loff_t pos) SYSCALL_DEFINE3(read, unsigned int, fd, char __user *, buf, size_t, count) { - struct fd f = fdget(fd); + struct fd f = fdget_pos(fd); ssize_t ret = -EBADF; if (f.file) { @@ -506,7 +518,7 @@ SYSCALL_DEFINE3(read, unsigned int, fd, char __user *, buf, size_t, count) ret = vfs_read(f.file, buf, count, &pos); if (ret >= 0) file_pos_write(f.file, pos); - fdput(f); + fdput_pos(f); } return ret; } @@ -514,7 +526,7 @@ SYSCALL_DEFINE3(read, unsigned int, fd, char __user *, buf, size_t, count) SYSCALL_DEFINE3(write, unsigned int, fd, const char __user *, buf, size_t, count) { - struct fd f = fdget(fd); + struct fd f = fdget_pos(fd); ssize_t ret = -EBADF; if (f.file) { @@ -522,7 +534,7 @@ SYSCALL_DEFINE3(write, unsigned int, fd, const char __user *, buf, ret = vfs_write(f.file, buf, count, &pos); if (ret >= 0) file_pos_write(f.file, pos); - fdput(f); + fdput_pos(f); } return ret; @@ -797,7 +809,7 @@ EXPORT_SYMBOL(vfs_writev); SYSCALL_DEFINE3(readv, unsigned long, fd, const struct iovec __user *, vec, unsigned long, vlen) { - struct fd f = fdget(fd); + struct fd f = fdget_pos(fd); ssize_t ret = -EBADF; if (f.file) { @@ -805,7 +817,7 @@ SYSCALL_DEFINE3(readv, unsigned long, fd, const struct iovec __user *, vec, ret = vfs_readv(f.file, vec, vlen, &pos); if (ret >= 0) file_pos_write(f.file, pos); - fdput(f); + fdput_pos(f); } if (ret > 0) @@ -817,7 +829,7 @@ SYSCALL_DEFINE3(readv, unsigned long, fd, const struct iovec __user *, vec, SYSCALL_DEFINE3(writev, unsigned long, fd, const struct iovec __user *, vec, unsigned long, vlen) { - struct fd f = fdget(fd); + struct fd f = fdget_pos(fd); ssize_t ret = -EBADF; if (f.file) { @@ -825,7 +837,7 @@ SYSCALL_DEFINE3(writev, unsigned long, fd, const struct iovec __user *, vec, ret = vfs_writev(f.file, vec, vlen, &pos); if (ret >= 0) file_pos_write(f.file, pos); - fdput(f); + fdput_pos(f); } if (ret > 0) @@ -901,10 +913,6 @@ static ssize_t compat_do_readv_writev(int type, struct file *file, io_fn_t fn; iov_fn_t fnv; - ret = -EFAULT; - if (!access_ok(VERIFY_READ, uvector, nr_segs*sizeof(*uvector))) - goto out; - ret = compat_rw_copy_check_uvector(type, uvector, nr_segs, UIO_FASTIOV, iovstack, &iov); if (ret <= 0) @@ -968,11 +976,11 @@ out: return ret; } -COMPAT_SYSCALL_DEFINE3(readv, unsigned long, fd, +COMPAT_SYSCALL_DEFINE3(readv, compat_ulong_t, fd, const struct compat_iovec __user *,vec, - unsigned long, vlen) + compat_ulong_t, vlen) { - struct fd f = fdget(fd); + struct fd f = fdget_pos(fd); ssize_t ret; loff_t pos; @@ -982,13 +990,13 @@ COMPAT_SYSCALL_DEFINE3(readv, unsigned long, fd, ret = compat_readv(f.file, vec, vlen, &pos); if (ret >= 0) f.file->f_pos = pos; - fdput(f); + fdput_pos(f); return ret; } -COMPAT_SYSCALL_DEFINE4(preadv64, unsigned long, fd, - const struct compat_iovec __user *,vec, - unsigned long, vlen, loff_t, pos) +static long __compat_sys_preadv64(unsigned long fd, + const struct compat_iovec __user *vec, + unsigned long vlen, loff_t pos) { struct fd f; ssize_t ret; @@ -1005,12 +1013,22 @@ COMPAT_SYSCALL_DEFINE4(preadv64, unsigned long, fd, return ret; } -COMPAT_SYSCALL_DEFINE5(preadv, unsigned long, fd, +#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64 +COMPAT_SYSCALL_DEFINE4(preadv64, unsigned long, fd, const struct compat_iovec __user *,vec, - unsigned long, vlen, u32, pos_low, u32, pos_high) + unsigned long, vlen, loff_t, pos) +{ + return __compat_sys_preadv64(fd, vec, vlen, pos); +} +#endif + +COMPAT_SYSCALL_DEFINE5(preadv, compat_ulong_t, fd, + const struct compat_iovec __user *,vec, + compat_ulong_t, vlen, u32, pos_low, u32, pos_high) { loff_t pos = ((loff_t)pos_high << 32) | pos_low; - return compat_sys_preadv64(fd, vec, vlen, pos); + + return __compat_sys_preadv64(fd, vec, vlen, pos); } static size_t compat_writev(struct file *file, @@ -1035,11 +1053,11 @@ out: return ret; } -COMPAT_SYSCALL_DEFINE3(writev, unsigned long, fd, +COMPAT_SYSCALL_DEFINE3(writev, compat_ulong_t, fd, const struct compat_iovec __user *, vec, - unsigned long, vlen) + compat_ulong_t, vlen) { - struct fd f = fdget(fd); + struct fd f = fdget_pos(fd); ssize_t ret; loff_t pos; @@ -1049,13 +1067,13 @@ COMPAT_SYSCALL_DEFINE3(writev, unsigned long, fd, ret = compat_writev(f.file, vec, vlen, &pos); if (ret >= 0) f.file->f_pos = pos; - fdput(f); + fdput_pos(f); return ret; } -COMPAT_SYSCALL_DEFINE4(pwritev64, unsigned long, fd, - const struct compat_iovec __user *,vec, - unsigned long, vlen, loff_t, pos) +static long __compat_sys_pwritev64(unsigned long fd, + const struct compat_iovec __user *vec, + unsigned long vlen, loff_t pos) { struct fd f; ssize_t ret; @@ -1072,12 +1090,22 @@ COMPAT_SYSCALL_DEFINE4(pwritev64, unsigned long, fd, return ret; } -COMPAT_SYSCALL_DEFINE5(pwritev, unsigned long, fd, +#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64 +COMPAT_SYSCALL_DEFINE4(pwritev64, unsigned long, fd, + const struct compat_iovec __user *,vec, + unsigned long, vlen, loff_t, pos) +{ + return __compat_sys_pwritev64(fd, vec, vlen, pos); +} +#endif + +COMPAT_SYSCALL_DEFINE5(pwritev, compat_ulong_t, fd, const struct compat_iovec __user *,vec, - unsigned long, vlen, u32, pos_low, u32, pos_high) + compat_ulong_t, vlen, u32, pos_low, u32, pos_high) { loff_t pos = ((loff_t)pos_high << 32) | pos_low; - return compat_sys_pwritev64(fd, vec, vlen, pos); + + return __compat_sys_pwritev64(fd, vec, vlen, pos); } #endif diff --git a/fs/reiserfs/acl.h b/fs/reiserfs/acl.h index f096b80e73d8..4a211f5b34b8 100644 --- a/fs/reiserfs/acl.h +++ b/fs/reiserfs/acl.h @@ -48,18 +48,18 @@ static inline int reiserfs_acl_count(size_t size) #ifdef CONFIG_REISERFS_FS_POSIX_ACL struct posix_acl *reiserfs_get_acl(struct inode *inode, int type); +int reiserfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); int reiserfs_acl_chmod(struct inode *inode); int reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th, struct inode *dir, struct dentry *dentry, struct inode *inode); int reiserfs_cache_default_acl(struct inode *dir); -extern const struct xattr_handler reiserfs_posix_acl_default_handler; -extern const struct xattr_handler reiserfs_posix_acl_access_handler; #else #define reiserfs_cache_default_acl(inode) 0 #define reiserfs_get_acl NULL +#define reiserfs_set_acl NULL static inline int reiserfs_acl_chmod(struct inode *inode) { diff --git a/fs/reiserfs/dir.c b/fs/reiserfs/dir.c index 1fd2051109a3..af677353a3f5 100644 --- a/fs/reiserfs/dir.c +++ b/fs/reiserfs/dir.c @@ -125,6 +125,7 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx) int d_reclen; char *d_name; ino_t d_ino; + loff_t cur_pos = deh_offset(deh); if (!de_visible(deh)) /* it is hidden entry */ @@ -196,8 +197,9 @@ int reiserfs_readdir_inode(struct inode *inode, struct dir_context *ctx) if (local_buf != small_buf) { kfree(local_buf); } - // next entry should be looked for with such offset - next_pos = deh_offset(deh) + 1; + + /* deh_offset(deh) may be invalid now. */ + next_pos = cur_pos + 1; if (item_moved(&tmp_ih, &path_to_entry)) { set_cpu_key_k_offset(&pos_key, diff --git a/fs/reiserfs/do_balan.c b/fs/reiserfs/do_balan.c index 2b7882b508db..9a3c68cf6026 100644 --- a/fs/reiserfs/do_balan.c +++ b/fs/reiserfs/do_balan.c @@ -324,23 +324,17 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h switch (flag) { case M_INSERT: /* insert item into L[0] */ - if (item_pos == tb->lnum[0] - 1 - && tb->lbytes != -1) { + if (item_pos == tb->lnum[0] - 1 && tb->lbytes != -1) { /* part of new item falls into L[0] */ int new_item_len; int version; - ret_val = - leaf_shift_left(tb, tb->lnum[0] - 1, - -1); + ret_val = leaf_shift_left(tb, tb->lnum[0] - 1, -1); /* Calculate item length to insert to S[0] */ - new_item_len = - ih_item_len(ih) - tb->lbytes; + new_item_len = ih_item_len(ih) - tb->lbytes; /* Calculate and check item length to insert to L[0] */ - put_ih_item_len(ih, - ih_item_len(ih) - - new_item_len); + put_ih_item_len(ih, ih_item_len(ih) - new_item_len); RFALSE(ih_item_len(ih) <= 0, "PAP-12080: there is nothing to insert into L[0]: ih_item_len=%d", @@ -349,30 +343,18 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h /* Insert new item into L[0] */ buffer_info_init_left(tb, &bi); leaf_insert_into_buf(&bi, - n + item_pos - - ret_val, ih, body, - zeros_num > - ih_item_len(ih) ? - ih_item_len(ih) : - zeros_num); + n + item_pos - ret_val, ih, body, + zeros_num > ih_item_len(ih) ? ih_item_len(ih) : zeros_num); version = ih_version(ih); /* Calculate key component, item length and body to insert into S[0] */ - set_le_ih_k_offset(ih, - le_ih_k_offset(ih) + - (tb-> - lbytes << - (is_indirect_le_ih - (ih) ? tb->tb_sb-> - s_blocksize_bits - - UNFM_P_SHIFT : - 0))); + set_le_ih_k_offset(ih, le_ih_k_offset(ih) + + (tb-> lbytes << (is_indirect_le_ih(ih) ? tb->tb_sb-> s_blocksize_bits - UNFM_P_SHIFT : 0))); put_ih_item_len(ih, new_item_len); if (tb->lbytes > zeros_num) { - body += - (tb->lbytes - zeros_num); + body += (tb->lbytes - zeros_num); zeros_num = 0; } else zeros_num -= tb->lbytes; @@ -383,15 +365,10 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h } else { /* new item in whole falls into L[0] */ /* Shift lnum[0]-1 items to L[0] */ - ret_val = - leaf_shift_left(tb, tb->lnum[0] - 1, - tb->lbytes); + ret_val = leaf_shift_left(tb, tb->lnum[0] - 1, tb->lbytes); /* Insert new item into L[0] */ buffer_info_init_left(tb, &bi); - leaf_insert_into_buf(&bi, - n + item_pos - - ret_val, ih, body, - zeros_num); + leaf_insert_into_buf(&bi, n + item_pos - ret_val, ih, body, zeros_num); tb->insert_size[0] = 0; zeros_num = 0; } @@ -399,264 +376,117 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h case M_PASTE: /* append item in L[0] */ - if (item_pos == tb->lnum[0] - 1 - && tb->lbytes != -1) { + if (item_pos == tb->lnum[0] - 1 && tb->lbytes != -1) { /* we must shift the part of the appended item */ - if (is_direntry_le_ih - (B_N_PITEM_HEAD(tbS0, item_pos))) { + if (is_direntry_le_ih(B_N_PITEM_HEAD(tbS0, item_pos))) { RFALSE(zeros_num, "PAP-12090: invalid parameter in case of a directory"); /* directory item */ if (tb->lbytes > pos_in_item) { /* new directory entry falls into L[0] */ - struct item_head - *pasted; - int l_pos_in_item = - pos_in_item; + struct item_head *pasted; + int l_pos_in_item = pos_in_item; /* Shift lnum[0] - 1 items in whole. Shift lbytes - 1 entries from given directory item */ - ret_val = - leaf_shift_left(tb, - tb-> - lnum - [0], - tb-> - lbytes - - - 1); - if (ret_val - && !item_pos) { - pasted = - B_N_PITEM_HEAD - (tb->L[0], - B_NR_ITEMS - (tb-> - L[0]) - - 1); - l_pos_in_item += - I_ENTRY_COUNT - (pasted) - - (tb-> - lbytes - - 1); + ret_val = leaf_shift_left(tb, tb->lnum[0], tb->lbytes-1); + if (ret_val && !item_pos) { + pasted = B_N_PITEM_HEAD(tb->L[0], B_NR_ITEMS(tb->L[0]) - 1); + l_pos_in_item += I_ENTRY_COUNT(pasted) - (tb->lbytes -1); } /* Append given directory entry to directory item */ buffer_info_init_left(tb, &bi); - leaf_paste_in_buffer - (&bi, - n + item_pos - - ret_val, - l_pos_in_item, - tb->insert_size[0], - body, zeros_num); + leaf_paste_in_buffer(&bi, n + item_pos - ret_val, l_pos_in_item, tb->insert_size[0], body, zeros_num); /* previous string prepared space for pasting new entry, following string pastes this entry */ /* when we have merge directory item, pos_in_item has been changed too */ /* paste new directory entry. 1 is entry number */ - leaf_paste_entries(&bi, - n + - item_pos - - - ret_val, - l_pos_in_item, - 1, - (struct - reiserfs_de_head - *) - body, - body - + - DEH_SIZE, - tb-> - insert_size - [0] - ); + leaf_paste_entries(&bi, n + item_pos - ret_val, l_pos_in_item, + 1, (struct reiserfs_de_head *) body, + body + DEH_SIZE, tb->insert_size[0]); tb->insert_size[0] = 0; } else { /* new directory item doesn't fall into L[0] */ /* Shift lnum[0]-1 items in whole. Shift lbytes directory entries from directory item number lnum[0] */ - leaf_shift_left(tb, - tb-> - lnum[0], - tb-> - lbytes); + leaf_shift_left(tb, tb->lnum[0], tb->lbytes); } /* Calculate new position to append in item body */ pos_in_item -= tb->lbytes; } else { /* regular object */ - RFALSE(tb->lbytes <= 0, - "PAP-12095: there is nothing to shift to L[0]. lbytes=%d", - tb->lbytes); - RFALSE(pos_in_item != - ih_item_len - (B_N_PITEM_HEAD - (tbS0, item_pos)), + RFALSE(tb->lbytes <= 0, "PAP-12095: there is nothing to shift to L[0]. lbytes=%d", tb->lbytes); + RFALSE(pos_in_item != ih_item_len(B_N_PITEM_HEAD(tbS0, item_pos)), "PAP-12100: incorrect position to paste: item_len=%d, pos_in_item=%d", - ih_item_len - (B_N_PITEM_HEAD - (tbS0, item_pos)), - pos_in_item); + ih_item_len(B_N_PITEM_HEAD(tbS0, item_pos)),pos_in_item); if (tb->lbytes >= pos_in_item) { /* appended item will be in L[0] in whole */ int l_n; /* this bytes number must be appended to the last item of L[h] */ - l_n = - tb->lbytes - - pos_in_item; + l_n = tb->lbytes - pos_in_item; /* Calculate new insert_size[0] */ - tb->insert_size[0] -= - l_n; + tb->insert_size[0] -= l_n; - RFALSE(tb-> - insert_size[0] <= - 0, + RFALSE(tb->insert_size[0] <= 0, "PAP-12105: there is nothing to paste into L[0]. insert_size=%d", - tb-> - insert_size[0]); - ret_val = - leaf_shift_left(tb, - tb-> - lnum - [0], - ih_item_len - (B_N_PITEM_HEAD - (tbS0, - item_pos))); + tb->insert_size[0]); + ret_val = leaf_shift_left(tb, tb->lnum[0], ih_item_len + (B_N_PITEM_HEAD(tbS0, item_pos))); /* Append to body of item in L[0] */ buffer_info_init_left(tb, &bi); leaf_paste_in_buffer - (&bi, - n + item_pos - - ret_val, - ih_item_len - (B_N_PITEM_HEAD - (tb->L[0], - n + item_pos - - ret_val)), l_n, - body, - zeros_num > - l_n ? l_n : - zeros_num); + (&bi, n + item_pos - ret_val, ih_item_len + (B_N_PITEM_HEAD(tb->L[0], n + item_pos - ret_val)), + l_n, body, + zeros_num > l_n ? l_n : zeros_num); /* 0-th item in S0 can be only of DIRECT type when l_n != 0 */ { int version; - int temp_l = - l_n; - - RFALSE - (ih_item_len - (B_N_PITEM_HEAD - (tbS0, - 0)), + int temp_l = l_n; + + RFALSE(ih_item_len(B_N_PITEM_HEAD(tbS0, 0)), "PAP-12106: item length must be 0"); - RFALSE - (comp_short_le_keys - (B_N_PKEY - (tbS0, 0), - B_N_PKEY - (tb->L[0], - n + - item_pos - - - ret_val)), + RFALSE(comp_short_le_keys(B_N_PKEY(tbS0, 0), B_N_PKEY + (tb->L[0], n + item_pos - ret_val)), "PAP-12107: items must be of the same file"); if (is_indirect_le_ih(B_N_PITEM_HEAD(tb->L[0], n + item_pos - ret_val))) { - temp_l = - l_n - << - (tb-> - tb_sb-> - s_blocksize_bits - - - UNFM_P_SHIFT); + temp_l = l_n << (tb->tb_sb-> s_blocksize_bits - UNFM_P_SHIFT); } /* update key of first item in S0 */ - version = - ih_version - (B_N_PITEM_HEAD - (tbS0, 0)); - set_le_key_k_offset - (version, - B_N_PKEY - (tbS0, 0), - le_key_k_offset - (version, - B_N_PKEY - (tbS0, - 0)) + - temp_l); + version = ih_version(B_N_PITEM_HEAD(tbS0, 0)); + set_le_key_k_offset(version, B_N_PKEY(tbS0, 0), + le_key_k_offset(version,B_N_PKEY(tbS0, 0)) + temp_l); /* update left delimiting key */ - set_le_key_k_offset - (version, - B_N_PDELIM_KEY - (tb-> - CFL[0], - tb-> - lkey[0]), - le_key_k_offset - (version, - B_N_PDELIM_KEY - (tb-> - CFL[0], - tb-> - lkey[0])) - + temp_l); + set_le_key_k_offset(version, B_N_PDELIM_KEY(tb->CFL[0], tb->lkey[0]), + le_key_k_offset(version, B_N_PDELIM_KEY(tb->CFL[0], tb->lkey[0])) + temp_l); } /* Calculate new body, position in item and insert_size[0] */ if (l_n > zeros_num) { - body += - (l_n - - zeros_num); + body += (l_n - zeros_num); zeros_num = 0; } else - zeros_num -= - l_n; + zeros_num -= l_n; pos_in_item = 0; - RFALSE - (comp_short_le_keys - (B_N_PKEY(tbS0, 0), - B_N_PKEY(tb->L[0], - B_NR_ITEMS - (tb-> - L[0]) - - 1)) - || - !op_is_left_mergeable - (B_N_PKEY(tbS0, 0), - tbS0->b_size) - || - !op_is_left_mergeable - (B_N_PDELIM_KEY - (tb->CFL[0], - tb->lkey[0]), - tbS0->b_size), + RFALSE(comp_short_le_keys(B_N_PKEY(tbS0, 0), B_N_PKEY(tb->L[0], B_NR_ITEMS(tb->L[0]) - 1)) + || !op_is_left_mergeable(B_N_PKEY(tbS0, 0), tbS0->b_size) + || !op_is_left_mergeable(B_N_PDELIM_KEY(tb->CFL[0], tb->lkey[0]), tbS0->b_size), "PAP-12120: item must be merge-able with left neighboring item"); } else { /* only part of the appended item will be in L[0] */ /* Calculate position in item for append in S[0] */ - pos_in_item -= - tb->lbytes; + pos_in_item -= tb->lbytes; - RFALSE(pos_in_item <= 0, - "PAP-12125: no place for paste. pos_in_item=%d", - pos_in_item); + RFALSE(pos_in_item <= 0, "PAP-12125: no place for paste. pos_in_item=%d", pos_in_item); /* Shift lnum[0] - 1 items in whole. Shift lbytes - 1 byte from item number lnum[0] */ - leaf_shift_left(tb, - tb-> - lnum[0], - tb-> - lbytes); + leaf_shift_left(tb, tb->lnum[0], tb->lbytes); } } } else { /* appended item will be in L[0] in whole */ @@ -665,52 +495,30 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h if (!item_pos && op_is_left_mergeable(B_N_PKEY(tbS0, 0), tbS0->b_size)) { /* if we paste into first item of S[0] and it is left mergable */ /* then increment pos_in_item by the size of the last item in L[0] */ - pasted = - B_N_PITEM_HEAD(tb->L[0], - n - 1); + pasted = B_N_PITEM_HEAD(tb->L[0], n - 1); if (is_direntry_le_ih(pasted)) - pos_in_item += - ih_entry_count - (pasted); + pos_in_item += ih_entry_count(pasted); else - pos_in_item += - ih_item_len(pasted); + pos_in_item += ih_item_len(pasted); } /* Shift lnum[0] - 1 items in whole. Shift lbytes - 1 byte from item number lnum[0] */ - ret_val = - leaf_shift_left(tb, tb->lnum[0], - tb->lbytes); + ret_val = leaf_shift_left(tb, tb->lnum[0], tb->lbytes); /* Append to body of item in L[0] */ buffer_info_init_left(tb, &bi); - leaf_paste_in_buffer(&bi, - n + item_pos - - ret_val, + leaf_paste_in_buffer(&bi, n + item_pos - ret_val, pos_in_item, tb->insert_size[0], body, zeros_num); /* if appended item is directory, paste entry */ - pasted = - B_N_PITEM_HEAD(tb->L[0], - n + item_pos - - ret_val); + pasted = B_N_PITEM_HEAD(tb->L[0], n + item_pos - ret_val); if (is_direntry_le_ih(pasted)) - leaf_paste_entries(&bi, - n + - item_pos - - ret_val, - pos_in_item, - 1, - (struct - reiserfs_de_head - *)body, - body + - DEH_SIZE, - tb-> - insert_size - [0] - ); + leaf_paste_entries(&bi, n + item_pos - ret_val, + pos_in_item, 1, + (struct reiserfs_de_head *) body, + body + DEH_SIZE, + tb->insert_size[0]); /* if appended item is indirect item, put unformatted node into un list */ if (is_indirect_le_ih(pasted)) set_ih_free_space(pasted, 0); @@ -722,13 +530,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h reiserfs_panic(tb->tb_sb, "PAP-12130", "lnum > 0: unexpected mode: " " %s(%d)", - (flag == - M_DELETE) ? "DELETE" : ((flag == - M_CUT) - ? "CUT" - : - "UNKNOWN"), - flag); + (flag == M_DELETE) ? "DELETE" : ((flag == M_CUT) ? "CUT" : "UNKNOWN"), flag); } } else { /* new item doesn't fall into L[0] */ @@ -748,14 +550,12 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h case M_INSERT: /* insert item */ if (n - tb->rnum[0] < item_pos) { /* new item or its part falls to R[0] */ if (item_pos == n - tb->rnum[0] + 1 && tb->rbytes != -1) { /* part of new item falls into R[0] */ - loff_t old_key_comp, old_len, - r_zeros_number; + loff_t old_key_comp, old_len, r_zeros_number; const char *r_body; int version; loff_t offset; - leaf_shift_right(tb, tb->rnum[0] - 1, - -1); + leaf_shift_right(tb, tb->rnum[0] - 1, -1); version = ih_version(ih); /* Remember key component and item length */ @@ -763,29 +563,17 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h old_len = ih_item_len(ih); /* Calculate key component and item length to insert into R[0] */ - offset = - le_ih_k_offset(ih) + - ((old_len - - tb-> - rbytes) << (is_indirect_le_ih(ih) - ? tb->tb_sb-> - s_blocksize_bits - - UNFM_P_SHIFT : 0)); + offset = le_ih_k_offset(ih) + ((old_len - tb->rbytes) << (is_indirect_le_ih(ih) ? tb->tb_sb->s_blocksize_bits - UNFM_P_SHIFT : 0)); set_le_ih_k_offset(ih, offset); put_ih_item_len(ih, tb->rbytes); /* Insert part of the item into R[0] */ buffer_info_init_right(tb, &bi); if ((old_len - tb->rbytes) > zeros_num) { r_zeros_number = 0; - r_body = - body + (old_len - - tb->rbytes) - - zeros_num; + r_body = body + (old_len - tb->rbytes) - zeros_num; } else { r_body = body; - r_zeros_number = - zeros_num - (old_len - - tb->rbytes); + r_zeros_number = zeros_num - (old_len - tb->rbytes); zeros_num -= r_zeros_number; } @@ -798,25 +586,18 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h /* Calculate key component and item length to insert into S[0] */ set_le_ih_k_offset(ih, old_key_comp); - put_ih_item_len(ih, - old_len - tb->rbytes); + put_ih_item_len(ih, old_len - tb->rbytes); tb->insert_size[0] -= tb->rbytes; } else { /* whole new item falls into R[0] */ /* Shift rnum[0]-1 items to R[0] */ - ret_val = - leaf_shift_right(tb, - tb->rnum[0] - 1, - tb->rbytes); + ret_val = leaf_shift_right(tb, tb->rnum[0] - 1, tb->rbytes); /* Insert new item into R[0] */ buffer_info_init_right(tb, &bi); - leaf_insert_into_buf(&bi, - item_pos - n + - tb->rnum[0] - 1, - ih, body, - zeros_num); + leaf_insert_into_buf(&bi, item_pos - n + tb->rnum[0] - 1, + ih, body, zeros_num); if (item_pos - n + tb->rnum[0] - 1 == 0) { replace_key(tb, tb->CFR[0], @@ -841,200 +622,97 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h RFALSE(zeros_num, "PAP-12145: invalid parameter in case of a directory"); - entry_count = - I_ENTRY_COUNT(B_N_PITEM_HEAD - (tbS0, - item_pos)); + entry_count = I_ENTRY_COUNT(B_N_PITEM_HEAD + (tbS0, item_pos)); if (entry_count - tb->rbytes < pos_in_item) /* new directory entry falls into R[0] */ { int paste_entry_position; - RFALSE(tb->rbytes - 1 >= - entry_count - || !tb-> - insert_size[0], + RFALSE(tb->rbytes - 1 >= entry_count || !tb-> insert_size[0], "PAP-12150: no enough of entries to shift to R[0]: rbytes=%d, entry_count=%d", - tb->rbytes, - entry_count); + tb->rbytes, entry_count); /* Shift rnum[0]-1 items in whole. Shift rbytes-1 directory entries from directory item number rnum[0] */ - leaf_shift_right(tb, - tb-> - rnum - [0], - tb-> - rbytes - - 1); + leaf_shift_right(tb, tb->rnum[0], tb->rbytes - 1); /* Paste given directory entry to directory item */ - paste_entry_position = - pos_in_item - - entry_count + - tb->rbytes - 1; + paste_entry_position = pos_in_item - entry_count + tb->rbytes - 1; buffer_info_init_right(tb, &bi); - leaf_paste_in_buffer - (&bi, 0, - paste_entry_position, - tb->insert_size[0], - body, zeros_num); + leaf_paste_in_buffer(&bi, 0, paste_entry_position, tb->insert_size[0], body, zeros_num); /* paste entry */ - leaf_paste_entries(&bi, - 0, - paste_entry_position, - 1, - (struct - reiserfs_de_head - *) - body, - body - + - DEH_SIZE, - tb-> - insert_size - [0] - ); - - if (paste_entry_position - == 0) { + leaf_paste_entries(&bi, 0, paste_entry_position, 1, + (struct reiserfs_de_head *) body, + body + DEH_SIZE, tb->insert_size[0]); + + if (paste_entry_position == 0) { /* change delimiting keys */ - replace_key(tb, - tb-> - CFR - [0], - tb-> - rkey - [0], - tb-> - R - [0], - 0); + replace_key(tb, tb->CFR[0], tb->rkey[0], tb->R[0],0); } tb->insert_size[0] = 0; pos_in_item++; } else { /* new directory entry doesn't fall into R[0] */ - leaf_shift_right(tb, - tb-> - rnum - [0], - tb-> - rbytes); + leaf_shift_right(tb, tb->rnum[0], tb->rbytes); } } else { /* regular object */ - int n_shift, n_rem, - r_zeros_number; + int n_shift, n_rem, r_zeros_number; const char *r_body; /* Calculate number of bytes which must be shifted from appended item */ - if ((n_shift = - tb->rbytes - - tb->insert_size[0]) < 0) + if ((n_shift = tb->rbytes - tb->insert_size[0]) < 0) n_shift = 0; - RFALSE(pos_in_item != - ih_item_len - (B_N_PITEM_HEAD - (tbS0, item_pos)), + RFALSE(pos_in_item != ih_item_len + (B_N_PITEM_HEAD(tbS0, item_pos)), "PAP-12155: invalid position to paste. ih_item_len=%d, pos_in_item=%d", - pos_in_item, - ih_item_len - (B_N_PITEM_HEAD - (tbS0, item_pos))); - - leaf_shift_right(tb, - tb->rnum[0], - n_shift); + pos_in_item, ih_item_len + (B_N_PITEM_HEAD(tbS0, item_pos))); + + leaf_shift_right(tb, tb->rnum[0], n_shift); /* Calculate number of bytes which must remain in body after appending to R[0] */ - if ((n_rem = - tb->insert_size[0] - - tb->rbytes) < 0) + if ((n_rem = tb->insert_size[0] - tb->rbytes) < 0) n_rem = 0; { int version; - unsigned long temp_rem = - n_rem; - - version = - ih_version - (B_N_PITEM_HEAD - (tb->R[0], 0)); - if (is_indirect_le_key - (version, - B_N_PKEY(tb->R[0], - 0))) { - temp_rem = - n_rem << - (tb->tb_sb-> - s_blocksize_bits - - - UNFM_P_SHIFT); + unsigned long temp_rem = n_rem; + + version = ih_version(B_N_PITEM_HEAD(tb->R[0], 0)); + if (is_indirect_le_key(version, B_N_PKEY(tb->R[0], 0))) { + temp_rem = n_rem << (tb->tb_sb->s_blocksize_bits - UNFM_P_SHIFT); } - set_le_key_k_offset - (version, - B_N_PKEY(tb->R[0], - 0), - le_key_k_offset - (version, - B_N_PKEY(tb->R[0], - 0)) + - temp_rem); - set_le_key_k_offset - (version, - B_N_PDELIM_KEY(tb-> - CFR - [0], - tb-> - rkey - [0]), - le_key_k_offset - (version, - B_N_PDELIM_KEY - (tb->CFR[0], - tb->rkey[0])) + - temp_rem); + set_le_key_k_offset(version, B_N_PKEY(tb->R[0], 0), + le_key_k_offset(version, B_N_PKEY(tb->R[0], 0)) + temp_rem); + set_le_key_k_offset(version, B_N_PDELIM_KEY(tb->CFR[0], tb->rkey[0]), + le_key_k_offset(version, B_N_PDELIM_KEY(tb->CFR[0], tb->rkey[0])) + temp_rem); } /* k_offset (B_N_PKEY(tb->R[0],0)) += n_rem; k_offset (B_N_PDELIM_KEY(tb->CFR[0],tb->rkey[0])) += n_rem;*/ - do_balance_mark_internal_dirty - (tb, tb->CFR[0], 0); + do_balance_mark_internal_dirty(tb, tb->CFR[0], 0); /* Append part of body into R[0] */ buffer_info_init_right(tb, &bi); if (n_rem > zeros_num) { r_zeros_number = 0; - r_body = - body + n_rem - - zeros_num; + r_body = body + n_rem - zeros_num; } else { r_body = body; - r_zeros_number = - zeros_num - n_rem; - zeros_num -= - r_zeros_number; + r_zeros_number = zeros_num - n_rem; + zeros_num -= r_zeros_number; } - leaf_paste_in_buffer(&bi, 0, - n_shift, - tb-> - insert_size - [0] - - n_rem, - r_body, - r_zeros_number); - - if (is_indirect_le_ih - (B_N_PITEM_HEAD - (tb->R[0], 0))) { + leaf_paste_in_buffer(&bi, 0, n_shift, + tb->insert_size[0] - n_rem, + r_body, r_zeros_number); + + if (is_indirect_le_ih(B_N_PITEM_HEAD(tb->R[0], 0))) { #if 0 RFALSE(n_rem, "PAP-12160: paste more than one unformatted node pointer"); #endif - set_ih_free_space - (B_N_PITEM_HEAD - (tb->R[0], 0), 0); + set_ih_free_space(B_N_PITEM_HEAD(tb->R[0], 0), 0); } tb->insert_size[0] = n_rem; if (!n_rem) @@ -1044,58 +722,28 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h struct item_head *pasted; - ret_val = - leaf_shift_right(tb, tb->rnum[0], - tb->rbytes); + ret_val = leaf_shift_right(tb, tb->rnum[0], tb->rbytes); /* append item in R[0] */ if (pos_in_item >= 0) { buffer_info_init_right(tb, &bi); - leaf_paste_in_buffer(&bi, - item_pos - - n + - tb-> - rnum[0], - pos_in_item, - tb-> - insert_size - [0], body, - zeros_num); + leaf_paste_in_buffer(&bi, item_pos - n + tb->rnum[0], pos_in_item, + tb->insert_size[0], body, zeros_num); } /* paste new entry, if item is directory item */ - pasted = - B_N_PITEM_HEAD(tb->R[0], - item_pos - n + - tb->rnum[0]); - if (is_direntry_le_ih(pasted) - && pos_in_item >= 0) { - leaf_paste_entries(&bi, - item_pos - - n + - tb->rnum[0], - pos_in_item, - 1, - (struct - reiserfs_de_head - *)body, - body + - DEH_SIZE, - tb-> - insert_size - [0] - ); + pasted = B_N_PITEM_HEAD(tb->R[0], item_pos - n + tb->rnum[0]); + if (is_direntry_le_ih(pasted) && pos_in_item >= 0) { + leaf_paste_entries(&bi, item_pos - n + tb->rnum[0], + pos_in_item, 1, + (struct reiserfs_de_head *) body, + body + DEH_SIZE, tb->insert_size[0]); if (!pos_in_item) { - RFALSE(item_pos - n + - tb->rnum[0], + RFALSE(item_pos - n + tb->rnum[0], "PAP-12165: directory item must be first item of node when pasting is in 0th position"); /* update delimiting keys */ - replace_key(tb, - tb->CFR[0], - tb->rkey[0], - tb->R[0], - 0); + replace_key(tb, tb->CFR[0], tb->rkey[0], tb->R[0], 0); } } @@ -1111,22 +759,16 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h default: /* cases d and t */ reiserfs_panic(tb->tb_sb, "PAP-12175", "rnum > 0: unexpected mode: %s(%d)", - (flag == - M_DELETE) ? "DELETE" : ((flag == - M_CUT) ? "CUT" - : "UNKNOWN"), - flag); + (flag == M_DELETE) ? "DELETE" : ((flag == M_CUT) ? "CUT" : "UNKNOWN"), flag); } } /* tb->rnum[0] > 0 */ RFALSE(tb->blknum[0] > 3, - "PAP-12180: blknum can not be %d. It must be <= 3", - tb->blknum[0]); + "PAP-12180: blknum can not be %d. It must be <= 3", tb->blknum[0]); RFALSE(tb->blknum[0] < 0, - "PAP-12185: blknum can not be %d. It must be >= 0", - tb->blknum[0]); + "PAP-12185: blknum can not be %d. It must be >= 0", tb->blknum[0]); /* if while adding to a node we discover that it is possible to split it in two, and merge the left part into the left neighbor and the @@ -1177,8 +819,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h if (n - snum[i] < item_pos) { /* new item or it's part falls to first new node S_new[i] */ if (item_pos == n - snum[i] + 1 && sbytes[i] != -1) { /* part of new item falls into S_new[i] */ - int old_key_comp, old_len, - r_zeros_number; + int old_key_comp, old_len, r_zeros_number; const char *r_body; int version; @@ -1192,15 +833,8 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h old_len = ih_item_len(ih); /* Calculate key component and item length to insert into S_new[i] */ - set_le_ih_k_offset(ih, - le_ih_k_offset(ih) + - ((old_len - - sbytes[i]) << - (is_indirect_le_ih - (ih) ? tb->tb_sb-> - s_blocksize_bits - - UNFM_P_SHIFT : - 0))); + set_le_ih_k_offset(ih, le_ih_k_offset(ih) + + ((old_len - sbytes[i]) << (is_indirect_le_ih(ih) ? tb->tb_sb-> s_blocksize_bits - UNFM_P_SHIFT : 0))); put_ih_item_len(ih, sbytes[i]); @@ -1209,39 +843,29 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h if ((old_len - sbytes[i]) > zeros_num) { r_zeros_number = 0; - r_body = - body + (old_len - - sbytes[i]) - - zeros_num; + r_body = body + (old_len - sbytes[i]) - zeros_num; } else { r_body = body; - r_zeros_number = - zeros_num - (old_len - - sbytes[i]); + r_zeros_number = zeros_num - (old_len - sbytes[i]); zeros_num -= r_zeros_number; } - leaf_insert_into_buf(&bi, 0, ih, r_body, - r_zeros_number); + leaf_insert_into_buf(&bi, 0, ih, r_body, r_zeros_number); /* Calculate key component and item length to insert into S[i] */ set_le_ih_k_offset(ih, old_key_comp); - put_ih_item_len(ih, - old_len - sbytes[i]); + put_ih_item_len(ih, old_len - sbytes[i]); tb->insert_size[0] -= sbytes[i]; } else { /* whole new item falls into S_new[i] */ /* Shift snum[0] - 1 items to S_new[i] (sbytes[i] of split item) */ leaf_move_items(LEAF_FROM_S_TO_SNEW, tb, - snum[i] - 1, sbytes[i], - S_new[i]); + snum[i] - 1, sbytes[i], S_new[i]); /* Insert new item into S_new[i] */ buffer_info_init_bh(tb, &bi, S_new[i]); - leaf_insert_into_buf(&bi, - item_pos - n + - snum[i] - 1, ih, - body, zeros_num); + leaf_insert_into_buf(&bi, item_pos - n + snum[i] - 1, + ih, body, zeros_num); zeros_num = tb->insert_size[0] = 0; } @@ -1268,150 +892,73 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h int entry_count; - entry_count = - ih_entry_count(aux_ih); + entry_count = ih_entry_count(aux_ih); - if (entry_count - sbytes[i] < - pos_in_item - && pos_in_item <= - entry_count) { + if (entry_count - sbytes[i] < pos_in_item && pos_in_item <= entry_count) { /* new directory entry falls into S_new[i] */ - RFALSE(!tb-> - insert_size[0], - "PAP-12215: insert_size is already 0"); - RFALSE(sbytes[i] - 1 >= - entry_count, + RFALSE(!tb->insert_size[0], "PAP-12215: insert_size is already 0"); + RFALSE(sbytes[i] - 1 >= entry_count, "PAP-12220: there are no so much entries (%d), only %d", - sbytes[i] - 1, - entry_count); + sbytes[i] - 1, entry_count); /* Shift snum[i]-1 items in whole. Shift sbytes[i] directory entries from directory item number snum[i] */ - leaf_move_items - (LEAF_FROM_S_TO_SNEW, - tb, snum[i], - sbytes[i] - 1, - S_new[i]); + leaf_move_items(LEAF_FROM_S_TO_SNEW, tb, snum[i], sbytes[i] - 1, S_new[i]); /* Paste given directory entry to directory item */ buffer_info_init_bh(tb, &bi, S_new[i]); - leaf_paste_in_buffer - (&bi, 0, - pos_in_item - - entry_count + - sbytes[i] - 1, - tb->insert_size[0], - body, zeros_num); + leaf_paste_in_buffer(&bi, 0, pos_in_item - entry_count + sbytes[i] - 1, + tb->insert_size[0], body, zeros_num); /* paste new directory entry */ - leaf_paste_entries(&bi, - 0, - pos_in_item - - - entry_count - + - sbytes - [i] - - 1, 1, - (struct - reiserfs_de_head - *) - body, - body - + - DEH_SIZE, - tb-> - insert_size - [0] - ); + leaf_paste_entries(&bi, 0, pos_in_item - entry_count + sbytes[i] - 1, 1, + (struct reiserfs_de_head *) body, + body + DEH_SIZE, tb->insert_size[0]); tb->insert_size[0] = 0; pos_in_item++; } else { /* new directory entry doesn't fall into S_new[i] */ - leaf_move_items - (LEAF_FROM_S_TO_SNEW, - tb, snum[i], - sbytes[i], - S_new[i]); + leaf_move_items(LEAF_FROM_S_TO_SNEW,tb, snum[i], sbytes[i], S_new[i]); } } else { /* regular object */ - int n_shift, n_rem, - r_zeros_number; + int n_shift, n_rem, r_zeros_number; const char *r_body; - RFALSE(pos_in_item != - ih_item_len - (B_N_PITEM_HEAD - (tbS0, item_pos)) - || tb->insert_size[0] <= - 0, + RFALSE(pos_in_item != ih_item_len(B_N_PITEM_HEAD(tbS0, item_pos)) || tb->insert_size[0] <= 0, "PAP-12225: item too short or insert_size <= 0"); /* Calculate number of bytes which must be shifted from appended item */ - n_shift = - sbytes[i] - - tb->insert_size[0]; + n_shift = sbytes[i] - tb->insert_size[0]; if (n_shift < 0) n_shift = 0; - leaf_move_items - (LEAF_FROM_S_TO_SNEW, tb, - snum[i], n_shift, - S_new[i]); + leaf_move_items(LEAF_FROM_S_TO_SNEW, tb, snum[i], n_shift, S_new[i]); /* Calculate number of bytes which must remain in body after append to S_new[i] */ - n_rem = - tb->insert_size[0] - - sbytes[i]; + n_rem = tb->insert_size[0] - sbytes[i]; if (n_rem < 0) n_rem = 0; /* Append part of body into S_new[0] */ buffer_info_init_bh(tb, &bi, S_new[i]); if (n_rem > zeros_num) { r_zeros_number = 0; - r_body = - body + n_rem - - zeros_num; + r_body = body + n_rem - zeros_num; } else { r_body = body; - r_zeros_number = - zeros_num - n_rem; - zeros_num -= - r_zeros_number; + r_zeros_number = zeros_num - n_rem; + zeros_num -= r_zeros_number; } - leaf_paste_in_buffer(&bi, 0, - n_shift, - tb-> - insert_size - [0] - - n_rem, - r_body, - r_zeros_number); + leaf_paste_in_buffer(&bi, 0, n_shift, + tb->insert_size[0] - n_rem, + r_body, r_zeros_number); { struct item_head *tmp; - tmp = - B_N_PITEM_HEAD(S_new - [i], - 0); + tmp = B_N_PITEM_HEAD(S_new[i], 0); if (is_indirect_le_ih (tmp)) { - set_ih_free_space - (tmp, 0); - set_le_ih_k_offset - (tmp, - le_ih_k_offset - (tmp) + - (n_rem << - (tb-> - tb_sb-> - s_blocksize_bits - - - UNFM_P_SHIFT))); + set_ih_free_space(tmp, 0); + set_le_ih_k_offset(tmp, le_ih_k_offset(tmp) + (n_rem << (tb->tb_sb->s_blocksize_bits - UNFM_P_SHIFT))); } else { - set_le_ih_k_offset - (tmp, - le_ih_k_offset - (tmp) + - n_rem); + set_le_ih_k_offset(tmp, le_ih_k_offset(tmp) + n_rem); } } @@ -1426,8 +973,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h struct item_head *pasted; #ifdef CONFIG_REISERFS_CHECK - struct item_head *ih_check = - B_N_PITEM_HEAD(tbS0, item_pos); + struct item_head *ih_check = B_N_PITEM_HEAD(tbS0, item_pos); if (!is_direntry_le_ih(ih_check) && (pos_in_item != ih_item_len(ih_check) @@ -1439,8 +985,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h "to ih_item_len"); #endif /* CONFIG_REISERFS_CHECK */ - leaf_mi = - leaf_move_items(LEAF_FROM_S_TO_SNEW, + leaf_mi = leaf_move_items(LEAF_FROM_S_TO_SNEW, tb, snum[i], sbytes[i], S_new[i]); @@ -1452,30 +997,19 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h /* paste into item */ buffer_info_init_bh(tb, &bi, S_new[i]); leaf_paste_in_buffer(&bi, - item_pos - n + - snum[i], + item_pos - n + snum[i], pos_in_item, tb->insert_size[0], body, zeros_num); - pasted = - B_N_PITEM_HEAD(S_new[i], - item_pos - n + - snum[i]); + pasted = B_N_PITEM_HEAD(S_new[i], item_pos - n + snum[i]); if (is_direntry_le_ih(pasted)) { leaf_paste_entries(&bi, - item_pos - - n + snum[i], - pos_in_item, - 1, - (struct - reiserfs_de_head - *)body, - body + - DEH_SIZE, - tb-> - insert_size - [0] + item_pos - n + snum[i], + pos_in_item, 1, + (struct reiserfs_de_head *)body, + body + DEH_SIZE, + tb->insert_size[0] ); } @@ -1495,11 +1029,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h default: /* cases d and t */ reiserfs_panic(tb->tb_sb, "PAP-12245", "blknum > 2: unexpected mode: %s(%d)", - (flag == - M_DELETE) ? "DELETE" : ((flag == - M_CUT) ? "CUT" - : "UNKNOWN"), - flag); + (flag == M_DELETE) ? "DELETE" : ((flag == M_CUT) ? "CUT" : "UNKNOWN"), flag); } memcpy(insert_key + i, B_N_PKEY(S_new[i], 0), KEY_SIZE); @@ -1524,9 +1054,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h /* If we insert the first key change the delimiting key */ if (item_pos == 0) { if (tb->CFL[0]) /* can be 0 in reiserfsck */ - replace_key(tb, tb->CFL[0], tb->lkey[0], - tbS0, 0); - + replace_key(tb, tb->CFL[0], tb->lkey[0], tbS0, 0); } break; @@ -1536,53 +1064,27 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h pasted = B_N_PITEM_HEAD(tbS0, item_pos); /* when directory, may be new entry already pasted */ if (is_direntry_le_ih(pasted)) { - if (pos_in_item >= 0 && - pos_in_item <= - ih_entry_count(pasted)) { + if (pos_in_item >= 0 && pos_in_item <= ih_entry_count(pasted)) { RFALSE(!tb->insert_size[0], "PAP-12260: insert_size is 0 already"); /* prepare space */ buffer_info_init_tbS0(tb, &bi); - leaf_paste_in_buffer(&bi, - item_pos, - pos_in_item, - tb-> - insert_size - [0], body, + leaf_paste_in_buffer(&bi, item_pos, pos_in_item, + tb->insert_size[0], body, zeros_num); /* paste entry */ - leaf_paste_entries(&bi, - item_pos, - pos_in_item, - 1, - (struct - reiserfs_de_head - *)body, - body + - DEH_SIZE, - tb-> - insert_size - [0] - ); + leaf_paste_entries(&bi, item_pos, pos_in_item, 1, + (struct reiserfs_de_head *)body, + body + DEH_SIZE, + tb->insert_size[0]); if (!item_pos && !pos_in_item) { - RFALSE(!tb->CFL[0] - || !tb->L[0], + RFALSE(!tb->CFL[0] || !tb->L[0], "PAP-12270: CFL[0]/L[0] must be specified"); - if (tb->CFL[0]) { - replace_key(tb, - tb-> - CFL - [0], - tb-> - lkey - [0], - tbS0, - 0); - - } + if (tb->CFL[0]) + replace_key(tb, tb->CFL[0], tb->lkey[0], tbS0, 0); } tb->insert_size[0] = 0; } @@ -1593,13 +1095,8 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h "PAP-12275: insert size must not be %d", tb->insert_size[0]); buffer_info_init_tbS0(tb, &bi); - leaf_paste_in_buffer(&bi, - item_pos, - pos_in_item, - tb-> - insert_size - [0], body, - zeros_num); + leaf_paste_in_buffer(&bi, item_pos, pos_in_item, + tb->insert_size[0], body, zeros_num); if (is_indirect_le_ih(pasted)) { #if 0 @@ -1611,8 +1108,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h tb-> insert_size[0]); #endif - set_ih_free_space - (pasted, 0); + set_ih_free_space(pasted, 0); } tb->insert_size[0] = 0; } @@ -1620,8 +1116,7 @@ static int balance_leaf(struct tree_balance *tb, struct item_head *ih, /* item h else { if (tb->insert_size[0]) { print_cur_tb("12285"); - reiserfs_panic(tb-> - tb_sb, + reiserfs_panic(tb->tb_sb, "PAP-12285", "insert_size " "must be 0 " diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c index dcaafcfc23b0..ed58d843d578 100644 --- a/fs/reiserfs/file.c +++ b/fs/reiserfs/file.c @@ -260,4 +260,5 @@ const struct inode_operations reiserfs_file_inode_operations = { .removexattr = reiserfs_removexattr, .permission = reiserfs_permission, .get_acl = reiserfs_get_acl, + .set_acl = reiserfs_set_acl, }; diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c index ad62bdbb451e..bc8b8009897d 100644 --- a/fs/reiserfs/inode.c +++ b/fs/reiserfs/inode.c @@ -35,7 +35,7 @@ void reiserfs_evict_inode(struct inode *inode) if (!inode->i_nlink && !is_bad_inode(inode)) dquot_initialize(inode); - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); if (inode->i_nlink) goto no_delete; diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c index dc5236f6de1b..e825f8b63e6b 100644 --- a/fs/reiserfs/namei.c +++ b/fs/reiserfs/namei.c @@ -1522,6 +1522,7 @@ const struct inode_operations reiserfs_dir_inode_operations = { .removexattr = reiserfs_removexattr, .permission = reiserfs_permission, .get_acl = reiserfs_get_acl, + .set_acl = reiserfs_set_acl, }; /* @@ -1538,8 +1539,6 @@ const struct inode_operations reiserfs_symlink_inode_operations = { .listxattr = reiserfs_listxattr, .removexattr = reiserfs_removexattr, .permission = reiserfs_permission, - .get_acl = reiserfs_get_acl, - }; /* @@ -1553,4 +1552,5 @@ const struct inode_operations reiserfs_special_inode_operations = { .removexattr = reiserfs_removexattr, .permission = reiserfs_permission, .get_acl = reiserfs_get_acl, + .set_acl = reiserfs_set_acl, }; diff --git a/fs/reiserfs/procfs.c b/fs/reiserfs/procfs.c index a958444a75fc..02b0b7d0f7d5 100644 --- a/fs/reiserfs/procfs.c +++ b/fs/reiserfs/procfs.c @@ -419,7 +419,7 @@ int reiserfs_proc_info_init(struct super_block *sb) char *s; /* Some block devices use /'s */ - strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE); + strlcpy(b, sb->s_id, BDEVNAME_SIZE); s = strchr(b, '/'); if (s) *s = '!'; @@ -449,7 +449,7 @@ int reiserfs_proc_info_done(struct super_block *sb) char *s; /* Some block devices use /'s */ - strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE); + strlcpy(b, sb->s_id, BDEVNAME_SIZE); s = strchr(b, '/'); if (s) *s = '!'; diff --git a/fs/reiserfs/reiserfs.h b/fs/reiserfs/reiserfs.h index f8adaee537c2..83d4eac8059a 100644 --- a/fs/reiserfs/reiserfs.h +++ b/fs/reiserfs/reiserfs.h @@ -608,14 +608,6 @@ int reiserfs_resize(struct super_block *, unsigned long); #define SB_DISK_JOURNAL_HEAD(s) (SB_JOURNAL(s)->j_header_bh->) -/* A safe version of the "bdevname", which returns the "s_id" field of - * a superblock or else "Null superblock" if the super block is NULL. - */ -static inline char *reiserfs_bdevname(struct super_block *s) -{ - return (s == NULL) ? "Null superblock" : s->s_id; -} - #define reiserfs_is_journal_aborted(journal) (unlikely (__reiserfs_is_journal_aborted (journal))) static inline int __reiserfs_is_journal_aborted(struct reiserfs_journal *journal) @@ -1958,8 +1950,6 @@ struct treepath var = {.path_length = ILLEGAL_PATH_ELEMENT_OFFSET, .reada = 0,} #define MAX_US_INT 0xffff // reiserfs version 2 has max offset 60 bits. Version 1 - 32 bit offset -#define U32_MAX (~(__u32)0) - static inline loff_t max_reiserfs_offset(struct inode *inode) { if (get_inode_item_key_version(inode) == KEY_FORMAT_3_5) @@ -2841,6 +2831,7 @@ void reiserfs_init_alloc_options(struct super_block *s); */ __le32 reiserfs_choose_packing(struct inode *dir); +void show_alloc_options(struct seq_file *seq, struct super_block *s); int reiserfs_init_bitmap_cache(struct super_block *sb); void reiserfs_free_bitmap_cache(struct super_block *sb); void reiserfs_cache_bitmap_metadata(struct super_block *sb, struct buffer_head *bh, struct reiserfs_bitmap_info *info); diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c index 3ead145dadc4..9fb20426005e 100644 --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -62,7 +62,6 @@ static int is_any_reiserfs_magic_string(struct reiserfs_super_block *rs) static int reiserfs_remount(struct super_block *s, int *flags, char *data); static int reiserfs_statfs(struct dentry *dentry, struct kstatfs *buf); -void show_alloc_options(struct seq_file *seq, struct super_block *s); static int reiserfs_sync_fs(struct super_block *s, int wait) { @@ -597,7 +596,7 @@ static void init_once(void *foo) inode_init_once(&ei->vfs_inode); } -static int init_inodecache(void) +static int __init init_inodecache(void) { reiserfs_inode_cachep = kmem_cache_create("reiser_inode_cache", sizeof(struct @@ -1319,6 +1318,7 @@ static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg) int i; #endif + sync_filesystem(s); reiserfs_write_lock(s); #ifdef CONFIG_QUOTA @@ -1479,7 +1479,7 @@ static int read_super_block(struct super_block *s, int offset) if (!bh) { reiserfs_warning(s, "sh-2006", "bread failed (dev %s, block %lu, size %lu)", - reiserfs_bdevname(s), offset / s->s_blocksize, + s->s_id, offset / s->s_blocksize, s->s_blocksize); return 1; } @@ -1500,7 +1500,7 @@ static int read_super_block(struct super_block *s, int offset) if (!bh) { reiserfs_warning(s, "sh-2007", "bread failed (dev %s, block %lu, size %lu)", - reiserfs_bdevname(s), offset / s->s_blocksize, + s->s_id, offset / s->s_blocksize, s->s_blocksize); return 1; } @@ -1509,7 +1509,7 @@ static int read_super_block(struct super_block *s, int offset) if (sb_blocksize(rs) != s->s_blocksize) { reiserfs_warning(s, "sh-2011", "can't find a reiserfs " "filesystem on (dev %s, block %Lu, size %lu)", - reiserfs_bdevname(s), + s->s_id, (unsigned long long)bh->b_blocknr, s->s_blocksize); brelse(bh); @@ -1825,7 +1825,7 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent) /* try new format (64-th 1k block), which can contain reiserfs super block */ else if (read_super_block(s, REISERFS_DISK_OFFSET_IN_BYTES)) { SWARN(silent, s, "sh-2021", "can not find reiserfs on %s", - reiserfs_bdevname(s)); + s->s_id); goto error_unlocked; } diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c index 8a9e2dcfe004..5cdfbd638b5c 100644 --- a/fs/reiserfs/xattr.c +++ b/fs/reiserfs/xattr.c @@ -50,6 +50,7 @@ #include <linux/stat.h> #include <linux/quotaops.h> #include <linux/security.h> +#include <linux/posix_acl_xattr.h> #define PRIVROOT_NAME ".reiserfs_priv" #define XAROOT_NAME "xattrs" @@ -904,8 +905,8 @@ static const struct xattr_handler *reiserfs_xattr_handlers[] = { &reiserfs_xattr_security_handler, #endif #ifdef CONFIG_REISERFS_FS_POSIX_ACL - &reiserfs_posix_acl_access_handler, - &reiserfs_posix_acl_default_handler, + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, #endif NULL }; diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c index 06c04f73da65..a6ce532402dc 100644 --- a/fs/reiserfs/xattr_acl.c +++ b/fs/reiserfs/xattr_acl.c @@ -11,35 +11,19 @@ #include "acl.h" #include <asm/uaccess.h> -static int reiserfs_set_acl(struct reiserfs_transaction_handle *th, +static int __reiserfs_set_acl(struct reiserfs_transaction_handle *th, struct inode *inode, int type, struct posix_acl *acl); -static int -posix_acl_set(struct dentry *dentry, const char *name, const void *value, - size_t size, int flags, int type) + +int +reiserfs_set_acl(struct inode *inode, struct posix_acl *acl, int type) { - struct inode *inode = dentry->d_inode; - struct posix_acl *acl; int error, error2; struct reiserfs_transaction_handle th; size_t jcreate_blocks; - if (!reiserfs_posixacl(inode->i_sb)) - return -EOPNOTSUPP; - if (!inode_owner_or_capable(inode)) - return -EPERM; - - if (value) { - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (IS_ERR(acl)) { - return PTR_ERR(acl); - } else if (acl) { - error = posix_acl_valid(acl); - if (error) - goto release_and_out; - } - } else - acl = NULL; + int size = acl ? posix_acl_xattr_size(acl->a_count) : 0; + /* Pessimism: We can't assume that anything from the xattr root up * has been created. */ @@ -51,7 +35,7 @@ posix_acl_set(struct dentry *dentry, const char *name, const void *value, error = journal_begin(&th, inode->i_sb, jcreate_blocks); reiserfs_write_unlock(inode->i_sb); if (error == 0) { - error = reiserfs_set_acl(&th, inode, type, acl); + error = __reiserfs_set_acl(&th, inode, type, acl); reiserfs_write_lock(inode->i_sb); error2 = journal_end(&th, inode->i_sb, jcreate_blocks); reiserfs_write_unlock(inode->i_sb); @@ -59,36 +43,13 @@ posix_acl_set(struct dentry *dentry, const char *name, const void *value, error = error2; } - release_and_out: - posix_acl_release(acl); - return error; -} - -static int -posix_acl_get(struct dentry *dentry, const char *name, void *buffer, - size_t size, int type) -{ - struct posix_acl *acl; - int error; - - if (!reiserfs_posixacl(dentry->d_sb)) - return -EOPNOTSUPP; - - acl = reiserfs_get_acl(dentry->d_inode, type); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl == NULL) - return -ENODATA; - error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size); - posix_acl_release(acl); - return error; } /* * Convert from filesystem to in-memory representation. */ -static struct posix_acl *posix_acl_from_disk(const void *value, size_t size) +static struct posix_acl *reiserfs_posix_acl_from_disk(const void *value, size_t size) { const char *end = (char *)value + size; int n, count; @@ -158,7 +119,7 @@ static struct posix_acl *posix_acl_from_disk(const void *value, size_t size) /* * Convert from in-memory to filesystem representation. */ -static void *posix_acl_to_disk(const struct posix_acl *acl, size_t * size) +static void *reiserfs_posix_acl_to_disk(const struct posix_acl *acl, size_t * size) { reiserfs_acl_header *ext_acl; char *e; @@ -221,10 +182,6 @@ struct posix_acl *reiserfs_get_acl(struct inode *inode, int type) int size; int retval; - acl = get_cached_acl(inode, type); - if (acl != ACL_NOT_CACHED) - return acl; - switch (type) { case ACL_TYPE_ACCESS: name = POSIX_ACL_XATTR_ACCESS; @@ -257,7 +214,7 @@ struct posix_acl *reiserfs_get_acl(struct inode *inode, int type) } else if (retval < 0) { acl = ERR_PTR(retval); } else { - acl = posix_acl_from_disk(value, retval); + acl = reiserfs_posix_acl_from_disk(value, retval); } if (!IS_ERR(acl)) set_cached_acl(inode, type, acl); @@ -273,7 +230,7 @@ struct posix_acl *reiserfs_get_acl(struct inode *inode, int type) * BKL held [before 2.5.x] */ static int -reiserfs_set_acl(struct reiserfs_transaction_handle *th, struct inode *inode, +__reiserfs_set_acl(struct reiserfs_transaction_handle *th, struct inode *inode, int type, struct posix_acl *acl) { char *name; @@ -281,9 +238,6 @@ reiserfs_set_acl(struct reiserfs_transaction_handle *th, struct inode *inode, size_t size = 0; int error; - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - switch (type) { case ACL_TYPE_ACCESS: name = POSIX_ACL_XATTR_ACCESS; @@ -307,7 +261,7 @@ reiserfs_set_acl(struct reiserfs_transaction_handle *th, struct inode *inode, } if (acl) { - value = posix_acl_to_disk(acl, &size); + value = reiserfs_posix_acl_to_disk(acl, &size); if (IS_ERR(value)) return (int)PTR_ERR(value); } @@ -343,7 +297,7 @@ reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th, struct inode *dir, struct dentry *dentry, struct inode *inode) { - struct posix_acl *acl; + struct posix_acl *default_acl, *acl; int err = 0; /* ACLs only get applied to files and directories */ @@ -363,37 +317,28 @@ reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th, goto apply_umask; } - acl = reiserfs_get_acl(dir, ACL_TYPE_DEFAULT); - if (IS_ERR(acl)) - return PTR_ERR(acl); + err = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl); + if (err) + return err; + if (default_acl) { + err = __reiserfs_set_acl(th, inode, ACL_TYPE_DEFAULT, + default_acl); + posix_acl_release(default_acl); + } if (acl) { - /* Copy the default ACL to the default ACL of a new directory */ - if (S_ISDIR(inode->i_mode)) { - err = reiserfs_set_acl(th, inode, ACL_TYPE_DEFAULT, - acl); - if (err) - goto cleanup; - } - - /* Now we reconcile the new ACL and the mode, - potentially modifying both */ - err = posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); - if (err < 0) - return err; - - /* If we need an ACL.. */ - if (err > 0) - err = reiserfs_set_acl(th, inode, ACL_TYPE_ACCESS, acl); - cleanup: + if (!err) + err = __reiserfs_set_acl(th, inode, ACL_TYPE_ACCESS, + acl); posix_acl_release(acl); - } else { - apply_umask: - /* no ACL, apply umask */ - inode->i_mode &= ~current_umask(); } return err; + + apply_umask: + /* no ACL, apply umask */ + inode->i_mode &= ~current_umask(); + return err; } /* This is used to cache the default acl before a new object is created. @@ -442,84 +387,11 @@ int reiserfs_cache_default_acl(struct inode *inode) */ int reiserfs_acl_chmod(struct inode *inode) { - struct reiserfs_transaction_handle th; - struct posix_acl *acl; - size_t size; - int error; - if (IS_PRIVATE(inode)) return 0; - - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - if (get_inode_sd_version(inode) == STAT_DATA_V1 || - !reiserfs_posixacl(inode->i_sb)) { + !reiserfs_posixacl(inode->i_sb)) return 0; - } - acl = reiserfs_get_acl(inode, ACL_TYPE_ACCESS); - if (!acl) - return 0; - if (IS_ERR(acl)) - return PTR_ERR(acl); - error = posix_acl_chmod(&acl, GFP_NOFS, inode->i_mode); - if (error) - return error; - - size = reiserfs_xattr_nblocks(inode, reiserfs_acl_size(acl->a_count)); - reiserfs_write_lock(inode->i_sb); - error = journal_begin(&th, inode->i_sb, size * 2); - reiserfs_write_unlock(inode->i_sb); - if (!error) { - int error2; - error = reiserfs_set_acl(&th, inode, ACL_TYPE_ACCESS, acl); - reiserfs_write_lock(inode->i_sb); - error2 = journal_end(&th, inode->i_sb, size * 2); - reiserfs_write_unlock(inode->i_sb); - if (error2) - error = error2; - } - posix_acl_release(acl); - return error; -} - -static size_t posix_acl_access_list(struct dentry *dentry, char *list, - size_t list_size, const char *name, - size_t name_len, int type) -{ - const size_t size = sizeof(POSIX_ACL_XATTR_ACCESS); - if (!reiserfs_posixacl(dentry->d_sb)) - return 0; - if (list && size <= list_size) - memcpy(list, POSIX_ACL_XATTR_ACCESS, size); - return size; + return posix_acl_chmod(inode, inode->i_mode); } - -const struct xattr_handler reiserfs_posix_acl_access_handler = { - .prefix = POSIX_ACL_XATTR_ACCESS, - .flags = ACL_TYPE_ACCESS, - .get = posix_acl_get, - .set = posix_acl_set, - .list = posix_acl_access_list, -}; - -static size_t posix_acl_default_list(struct dentry *dentry, char *list, - size_t list_size, const char *name, - size_t name_len, int type) -{ - const size_t size = sizeof(POSIX_ACL_XATTR_DEFAULT); - if (!reiserfs_posixacl(dentry->d_sb)) - return 0; - if (list && size <= list_size) - memcpy(list, POSIX_ACL_XATTR_DEFAULT, size); - return size; -} - -const struct xattr_handler reiserfs_posix_acl_default_handler = { - .prefix = POSIX_ACL_XATTR_DEFAULT, - .flags = ACL_TYPE_DEFAULT, - .get = posix_acl_get, - .set = posix_acl_set, - .list = posix_acl_default_list, -}; diff --git a/fs/romfs/super.c b/fs/romfs/super.c index ff1d3d42e72a..ef90e8bca95a 100644 --- a/fs/romfs/super.c +++ b/fs/romfs/super.c @@ -432,6 +432,7 @@ static int romfs_statfs(struct dentry *dentry, struct kstatfs *buf) */ static int romfs_remount(struct super_block *sb, int *flags, char *data) { + sync_filesystem(sb); *flags |= MS_RDONLY; return 0; } @@ -533,16 +534,14 @@ static int romfs_fill_super(struct super_block *sb, void *data, int silent) root = romfs_iget(sb, pos); if (IS_ERR(root)) - goto error; + return PTR_ERR(root); sb->s_root = d_make_root(root); if (!sb->s_root) - goto error; + return -ENOMEM; return 0; -error: - return -EINVAL; error_rsb_inval: ret = -EINVAL; error_rsb: diff --git a/fs/splice.c b/fs/splice.c index 46a08f772d7d..12028fa41def 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -555,6 +555,24 @@ static const struct pipe_buf_operations default_pipe_buf_ops = { .get = generic_pipe_buf_get, }; +static int generic_pipe_buf_nosteal(struct pipe_inode_info *pipe, + struct pipe_buffer *buf) +{ + return 1; +} + +/* Pipe buffer operations for a socket and similar. */ +const struct pipe_buf_operations nosteal_pipe_buf_ops = { + .can_merge = 0, + .map = generic_pipe_buf_map, + .unmap = generic_pipe_buf_unmap, + .confirm = generic_pipe_buf_confirm, + .release = generic_pipe_buf_release, + .steal = generic_pipe_buf_nosteal, + .get = generic_pipe_buf_get, +}; +EXPORT_SYMBOL(nosteal_pipe_buf_ops); + static ssize_t kernel_readv(struct file *file, const struct iovec *vec, unsigned long vlen, loff_t offset) { diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c index 202df6312d4e..031c8d67fd51 100644 --- a/fs/squashfs/super.c +++ b/fs/squashfs/super.c @@ -371,6 +371,7 @@ static int squashfs_statfs(struct dentry *dentry, struct kstatfs *buf) static int squashfs_remount(struct super_block *sb, int *flags, char *data) { + sync_filesystem(sb); *flags |= MS_RDONLY; return 0; } diff --git a/fs/super.c b/fs/super.c index e5f6c2cfac38..e9dc3c3fe159 100644 --- a/fs/super.c +++ b/fs/super.c @@ -166,6 +166,8 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags) if (!s) return NULL; + INIT_LIST_HEAD(&s->s_mounts); + if (security_sb_alloc(s)) goto fail; @@ -188,7 +190,6 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags) if (list_lru_init(&s->s_inode_lru)) goto fail; - INIT_LIST_HEAD(&s->s_mounts); init_rwsem(&s->s_umount); lockdep_set_class(&s->s_umount, &type->s_umount_key); /* @@ -702,7 +703,6 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force) if (flags & MS_RDONLY) acct_auto_close(sb); shrink_dcache_sb(sb); - sync_filesystem(sb); remount_ro = (flags & MS_RDONLY) && !(sb->s_flags & MS_RDONLY); diff --git a/fs/sync.c b/fs/sync.c index f15537452231..b28d1dd10e8b 100644 --- a/fs/sync.c +++ b/fs/sync.c @@ -27,11 +27,10 @@ * wait == 1 case since in that case write_inode() functions do * sync_dirty_buffer() and thus effectively write one block at a time. */ -static int __sync_filesystem(struct super_block *sb, int wait, - unsigned long start) +static int __sync_filesystem(struct super_block *sb, int wait) { if (wait) - sync_inodes_sb(sb, start); + sync_inodes_sb(sb); else writeback_inodes_sb(sb, WB_REASON_SYNC); @@ -48,7 +47,6 @@ static int __sync_filesystem(struct super_block *sb, int wait, int sync_filesystem(struct super_block *sb) { int ret; - unsigned long start = jiffies; /* * We need to be protected against the filesystem going from @@ -62,17 +60,17 @@ int sync_filesystem(struct super_block *sb) if (sb->s_flags & MS_RDONLY) return 0; - ret = __sync_filesystem(sb, 0, start); + ret = __sync_filesystem(sb, 0); if (ret < 0) return ret; - return __sync_filesystem(sb, 1, start); + return __sync_filesystem(sb, 1); } EXPORT_SYMBOL_GPL(sync_filesystem); static void sync_inodes_one_sb(struct super_block *sb, void *arg) { if (!(sb->s_flags & MS_RDONLY)) - sync_inodes_sb(sb, *((unsigned long *)arg)); + sync_inodes_sb(sb); } static void sync_fs_one_sb(struct super_block *sb, void *arg) @@ -104,10 +102,9 @@ static void fdatawait_one_bdev(struct block_device *bdev, void *arg) SYSCALL_DEFINE0(sync) { int nowait = 0, wait = 1; - unsigned long start = jiffies; wakeup_flusher_threads(0, WB_REASON_SYNC); - iterate_supers(sync_inodes_one_sb, &start); + iterate_supers(sync_inodes_one_sb, NULL); iterate_supers(sync_fs_one_sb, &nowait); iterate_supers(sync_fs_one_sb, &wait); iterate_bdevs(fdatawrite_one_bdev, NULL); @@ -222,23 +219,6 @@ SYSCALL_DEFINE1(fdatasync, unsigned int, fd) return do_fsync(fd, 1); } -/** - * generic_write_sync - perform syncing after a write if file / inode is sync - * @file: file to which the write happened - * @pos: offset where the write started - * @count: length of the write - * - * This is just a simple wrapper about our general syncing function. - */ -int generic_write_sync(struct file *file, loff_t pos, loff_t count) -{ - if (!(file->f_flags & O_DSYNC) && !IS_SYNC(file->f_mapping->host)) - return 0; - return vfs_fsync_range(file, pos, pos + count - 1, - (file->f_flags & __O_SYNC) ? 0 : 1); -} -EXPORT_SYMBOL(generic_write_sync); - /* * sys_sync_file_range() permits finely controlled syncing over a segment of * a file in the range offset .. (offset+nbytes-1) inclusive. If nbytes is diff --git a/fs/sysfs/Kconfig b/fs/sysfs/Kconfig index 8c41feacbac5..b2756014508c 100644 --- a/fs/sysfs/Kconfig +++ b/fs/sysfs/Kconfig @@ -1,6 +1,7 @@ config SYSFS bool "sysfs file system support" if EXPERT default y + select KERNFS help The sysfs filesystem is a virtual filesystem that the kernel uses to export internal kernel objects, their attributes, and their diff --git a/fs/sysfs/Makefile b/fs/sysfs/Makefile index 8876ac183373..6eff6e1205a5 100644 --- a/fs/sysfs/Makefile +++ b/fs/sysfs/Makefile @@ -2,4 +2,4 @@ # Makefile for the sysfs virtual filesystem # -obj-y := inode.o file.o dir.o symlink.o mount.o group.o +obj-y := file.o dir.o symlink.o mount.o group.o diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index 5e73d6626e50..0b45ff42f374 100644 --- a/fs/sysfs/dir.c +++ b/fs/sysfs/dir.c @@ -13,721 +13,24 @@ #undef DEBUG #include <linux/fs.h> -#include <linux/mount.h> -#include <linux/module.h> #include <linux/kobject.h> -#include <linux/namei.h> -#include <linux/idr.h> -#include <linux/completion.h> -#include <linux/mutex.h> #include <linux/slab.h> -#include <linux/security.h> -#include <linux/hash.h> #include "sysfs.h" -DEFINE_MUTEX(sysfs_mutex); DEFINE_SPINLOCK(sysfs_symlink_target_lock); -#define to_sysfs_dirent(X) rb_entry((X), struct sysfs_dirent, s_rb) - -static DEFINE_SPINLOCK(sysfs_ino_lock); -static DEFINE_IDA(sysfs_ino_ida); - -/** - * sysfs_name_hash - * @name: Null terminated string to hash - * @ns: Namespace tag to hash - * - * Returns 31 bit hash of ns + name (so it fits in an off_t ) - */ -static unsigned int sysfs_name_hash(const char *name, const void *ns) -{ - unsigned long hash = init_name_hash(); - unsigned int len = strlen(name); - while (len--) - hash = partial_name_hash(*name++, hash); - hash = (end_name_hash(hash) ^ hash_ptr((void *)ns, 31)); - hash &= 0x7fffffffU; - /* Reserve hash numbers 0, 1 and INT_MAX for magic directory entries */ - if (hash < 1) - hash += 2; - if (hash >= INT_MAX) - hash = INT_MAX - 1; - return hash; -} - -static int sysfs_name_compare(unsigned int hash, const char *name, - const void *ns, const struct sysfs_dirent *sd) -{ - if (hash != sd->s_hash) - return hash - sd->s_hash; - if (ns != sd->s_ns) - return ns - sd->s_ns; - return strcmp(name, sd->s_name); -} - -static int sysfs_sd_compare(const struct sysfs_dirent *left, - const struct sysfs_dirent *right) -{ - return sysfs_name_compare(left->s_hash, left->s_name, left->s_ns, - right); -} - -/** - * sysfs_link_sibling - link sysfs_dirent into sibling rbtree - * @sd: sysfs_dirent of interest - * - * Link @sd into its sibling rbtree which starts from - * sd->s_parent->s_dir.children. - * - * Locking: - * mutex_lock(sysfs_mutex) - * - * RETURNS: - * 0 on susccess -EEXIST on failure. - */ -static int sysfs_link_sibling(struct sysfs_dirent *sd) -{ - struct rb_node **node = &sd->s_parent->s_dir.children.rb_node; - struct rb_node *parent = NULL; - - if (sysfs_type(sd) == SYSFS_DIR) - sd->s_parent->s_dir.subdirs++; - - while (*node) { - struct sysfs_dirent *pos; - int result; - - pos = to_sysfs_dirent(*node); - parent = *node; - result = sysfs_sd_compare(sd, pos); - if (result < 0) - node = &pos->s_rb.rb_left; - else if (result > 0) - node = &pos->s_rb.rb_right; - else - return -EEXIST; - } - /* add new node and rebalance the tree */ - rb_link_node(&sd->s_rb, parent, node); - rb_insert_color(&sd->s_rb, &sd->s_parent->s_dir.children); - return 0; -} - -/** - * sysfs_unlink_sibling - unlink sysfs_dirent from sibling rbtree - * @sd: sysfs_dirent of interest - * - * Unlink @sd from its sibling rbtree which starts from - * sd->s_parent->s_dir.children. - * - * Locking: - * mutex_lock(sysfs_mutex) - */ -static void sysfs_unlink_sibling(struct sysfs_dirent *sd) -{ - if (sysfs_type(sd) == SYSFS_DIR) - sd->s_parent->s_dir.subdirs--; - - rb_erase(&sd->s_rb, &sd->s_parent->s_dir.children); -} - -/** - * sysfs_get_active - get an active reference to sysfs_dirent - * @sd: sysfs_dirent to get an active reference to - * - * Get an active reference of @sd. This function is noop if @sd - * is NULL. - * - * RETURNS: - * Pointer to @sd on success, NULL on failure. - */ -struct sysfs_dirent *sysfs_get_active(struct sysfs_dirent *sd) -{ - if (unlikely(!sd)) - return NULL; - - if (!atomic_inc_unless_negative(&sd->s_active)) - return NULL; - - if (likely(!sysfs_ignore_lockdep(sd))) - rwsem_acquire_read(&sd->dep_map, 0, 1, _RET_IP_); - return sd; -} - -/** - * sysfs_put_active - put an active reference to sysfs_dirent - * @sd: sysfs_dirent to put an active reference to - * - * Put an active reference to @sd. This function is noop if @sd - * is NULL. - */ -void sysfs_put_active(struct sysfs_dirent *sd) -{ - int v; - - if (unlikely(!sd)) - return; - - if (likely(!sysfs_ignore_lockdep(sd))) - rwsem_release(&sd->dep_map, 1, _RET_IP_); - v = atomic_dec_return(&sd->s_active); - if (likely(v != SD_DEACTIVATED_BIAS)) - return; - - /* atomic_dec_return() is a mb(), we'll always see the updated - * sd->u.completion. - */ - complete(sd->u.completion); -} - -/** - * sysfs_deactivate - deactivate sysfs_dirent - * @sd: sysfs_dirent to deactivate - * - * Deny new active references and drain existing ones. - */ -static void sysfs_deactivate(struct sysfs_dirent *sd) -{ - DECLARE_COMPLETION_ONSTACK(wait); - int v; - - BUG_ON(!(sd->s_flags & SYSFS_FLAG_REMOVED)); - - if (!(sysfs_type(sd) & SYSFS_ACTIVE_REF)) - return; - - sd->u.completion = (void *)&wait; - - rwsem_acquire(&sd->dep_map, 0, 0, _RET_IP_); - /* atomic_add_return() is a mb(), put_active() will always see - * the updated sd->u.completion. - */ - v = atomic_add_return(SD_DEACTIVATED_BIAS, &sd->s_active); - - if (v != SD_DEACTIVATED_BIAS) { - lock_contended(&sd->dep_map, _RET_IP_); - wait_for_completion(&wait); - } - - lock_acquired(&sd->dep_map, _RET_IP_); - rwsem_release(&sd->dep_map, 1, _RET_IP_); -} - -static int sysfs_alloc_ino(unsigned int *pino) -{ - int ino, rc; - - retry: - spin_lock(&sysfs_ino_lock); - rc = ida_get_new_above(&sysfs_ino_ida, 2, &ino); - spin_unlock(&sysfs_ino_lock); - - if (rc == -EAGAIN) { - if (ida_pre_get(&sysfs_ino_ida, GFP_KERNEL)) - goto retry; - rc = -ENOMEM; - } - - *pino = ino; - return rc; -} - -static void sysfs_free_ino(unsigned int ino) -{ - spin_lock(&sysfs_ino_lock); - ida_remove(&sysfs_ino_ida, ino); - spin_unlock(&sysfs_ino_lock); -} - -void release_sysfs_dirent(struct sysfs_dirent *sd) -{ - struct sysfs_dirent *parent_sd; - - repeat: - /* Moving/renaming is always done while holding reference. - * sd->s_parent won't change beneath us. - */ - parent_sd = sd->s_parent; - - WARN(!(sd->s_flags & SYSFS_FLAG_REMOVED), - "sysfs: free using entry: %s/%s\n", - parent_sd ? parent_sd->s_name : "", sd->s_name); - - if (sysfs_type(sd) == SYSFS_KOBJ_LINK) - sysfs_put(sd->s_symlink.target_sd); - if (sysfs_type(sd) & SYSFS_COPY_NAME) - kfree(sd->s_name); - if (sd->s_iattr && sd->s_iattr->ia_secdata) - security_release_secctx(sd->s_iattr->ia_secdata, - sd->s_iattr->ia_secdata_len); - kfree(sd->s_iattr); - sysfs_free_ino(sd->s_ino); - kmem_cache_free(sysfs_dir_cachep, sd); - - sd = parent_sd; - if (sd && atomic_dec_and_test(&sd->s_count)) - goto repeat; -} - -static int sysfs_dentry_delete(const struct dentry *dentry) -{ - struct sysfs_dirent *sd = dentry->d_fsdata; - return !(sd && !(sd->s_flags & SYSFS_FLAG_REMOVED)); -} - -static int sysfs_dentry_revalidate(struct dentry *dentry, unsigned int flags) -{ - struct sysfs_dirent *sd; - int type; - - if (flags & LOOKUP_RCU) - return -ECHILD; - - sd = dentry->d_fsdata; - mutex_lock(&sysfs_mutex); - - /* The sysfs dirent has been deleted */ - if (sd->s_flags & SYSFS_FLAG_REMOVED) - goto out_bad; - - /* The sysfs dirent has been moved? */ - if (dentry->d_parent->d_fsdata != sd->s_parent) - goto out_bad; - - /* The sysfs dirent has been renamed */ - if (strcmp(dentry->d_name.name, sd->s_name) != 0) - goto out_bad; - - /* The sysfs dirent has been moved to a different namespace */ - type = KOBJ_NS_TYPE_NONE; - if (sd->s_parent) { - type = sysfs_ns_type(sd->s_parent); - if (type != KOBJ_NS_TYPE_NONE && - sysfs_info(dentry->d_sb)->ns[type] != sd->s_ns) - goto out_bad; - } - - mutex_unlock(&sysfs_mutex); -out_valid: - return 1; -out_bad: - /* Remove the dentry from the dcache hashes. - * If this is a deleted dentry we use d_drop instead of d_delete - * so sysfs doesn't need to cope with negative dentries. - * - * If this is a dentry that has simply been renamed we - * use d_drop to remove it from the dcache lookup on its - * old parent. If this dentry persists later when a lookup - * is performed at its new name the dentry will be readded - * to the dcache hashes. - */ - mutex_unlock(&sysfs_mutex); - - /* If we have submounts we must allow the vfs caches - * to lie about the state of the filesystem to prevent - * leaks and other nasty things. - */ - if (check_submounts_and_drop(dentry) != 0) - goto out_valid; - - return 0; -} - -static void sysfs_dentry_release(struct dentry *dentry) -{ - sysfs_put(dentry->d_fsdata); -} - -const struct dentry_operations sysfs_dentry_ops = { - .d_revalidate = sysfs_dentry_revalidate, - .d_delete = sysfs_dentry_delete, - .d_release = sysfs_dentry_release, -}; - -struct sysfs_dirent *sysfs_new_dirent(const char *name, umode_t mode, int type) -{ - char *dup_name = NULL; - struct sysfs_dirent *sd; - - if (type & SYSFS_COPY_NAME) { - name = dup_name = kstrdup(name, GFP_KERNEL); - if (!name) - return NULL; - } - - sd = kmem_cache_zalloc(sysfs_dir_cachep, GFP_KERNEL); - if (!sd) - goto err_out1; - - if (sysfs_alloc_ino(&sd->s_ino)) - goto err_out2; - - atomic_set(&sd->s_count, 1); - atomic_set(&sd->s_active, 0); - - sd->s_name = name; - sd->s_mode = mode; - sd->s_flags = type | SYSFS_FLAG_REMOVED; - - return sd; - - err_out2: - kmem_cache_free(sysfs_dir_cachep, sd); - err_out1: - kfree(dup_name); - return NULL; -} - -/** - * sysfs_addrm_start - prepare for sysfs_dirent add/remove - * @acxt: pointer to sysfs_addrm_cxt to be used - * - * This function is called when the caller is about to add or remove - * sysfs_dirent. This function acquires sysfs_mutex. @acxt is used - * to keep and pass context to other addrm functions. - * - * LOCKING: - * Kernel thread context (may sleep). sysfs_mutex is locked on - * return. - */ -void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt) - __acquires(sysfs_mutex) -{ - memset(acxt, 0, sizeof(*acxt)); - - mutex_lock(&sysfs_mutex); -} - -/** - * __sysfs_add_one - add sysfs_dirent to parent without warning - * @acxt: addrm context to use - * @sd: sysfs_dirent to be added - * @parent_sd: the parent sysfs_dirent to add @sd to - * - * Get @parent_sd and set @sd->s_parent to it and increment nlink of - * the parent inode if @sd is a directory and link into the children - * list of the parent. - * - * This function should be called between calls to - * sysfs_addrm_start() and sysfs_addrm_finish() and should be - * passed the same @acxt as passed to sysfs_addrm_start(). - * - * LOCKING: - * Determined by sysfs_addrm_start(). - * - * RETURNS: - * 0 on success, -EEXIST if entry with the given name already - * exists. - */ -int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd, - struct sysfs_dirent *parent_sd) -{ - struct sysfs_inode_attrs *ps_iattr; - int ret; - - if (!!sysfs_ns_type(parent_sd) != !!sd->s_ns) { - WARN(1, KERN_WARNING "sysfs: ns %s in '%s' for '%s'\n", - sysfs_ns_type(parent_sd) ? "required" : "invalid", - parent_sd->s_name, sd->s_name); - return -EINVAL; - } - - sd->s_hash = sysfs_name_hash(sd->s_name, sd->s_ns); - sd->s_parent = sysfs_get(parent_sd); - - ret = sysfs_link_sibling(sd); - if (ret) - return ret; - - /* Update timestamps on the parent */ - ps_iattr = parent_sd->s_iattr; - if (ps_iattr) { - struct iattr *ps_iattrs = &ps_iattr->ia_iattr; - ps_iattrs->ia_ctime = ps_iattrs->ia_mtime = CURRENT_TIME; - } - - /* Mark the entry added into directory tree */ - sd->s_flags &= ~SYSFS_FLAG_REMOVED; - - return 0; -} - -/** - * sysfs_pathname - return full path to sysfs dirent - * @sd: sysfs_dirent whose path we want - * @path: caller allocated buffer of size PATH_MAX - * - * Gives the name "/" to the sysfs_root entry; any path returned - * is relative to wherever sysfs is mounted. - */ -static char *sysfs_pathname(struct sysfs_dirent *sd, char *path) -{ - if (sd->s_parent) { - sysfs_pathname(sd->s_parent, path); - strlcat(path, "/", PATH_MAX); - } - strlcat(path, sd->s_name, PATH_MAX); - return path; -} - -void sysfs_warn_dup(struct sysfs_dirent *parent, const char *name) -{ - char *path; - - path = kzalloc(PATH_MAX, GFP_KERNEL); - if (path) { - sysfs_pathname(parent, path); - strlcat(path, "/", PATH_MAX); - strlcat(path, name, PATH_MAX); - } - - WARN(1, KERN_WARNING "sysfs: cannot create duplicate filename '%s'\n", - path ? path : name); - - kfree(path); -} - -/** - * sysfs_add_one - add sysfs_dirent to parent - * @acxt: addrm context to use - * @sd: sysfs_dirent to be added - * @parent_sd: the parent sysfs_dirent to add @sd to - * - * Get @parent_sd and set @sd->s_parent to it and increment nlink of - * the parent inode if @sd is a directory and link into the children - * list of the parent. - * - * This function should be called between calls to - * sysfs_addrm_start() and sysfs_addrm_finish() and should be - * passed the same @acxt as passed to sysfs_addrm_start(). - * - * LOCKING: - * Determined by sysfs_addrm_start(). - * - * RETURNS: - * 0 on success, -EEXIST if entry with the given name already - * exists. - */ -int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd, - struct sysfs_dirent *parent_sd) -{ - int ret; - - ret = __sysfs_add_one(acxt, sd, parent_sd); - - if (ret == -EEXIST) - sysfs_warn_dup(parent_sd, sd->s_name); - return ret; -} - -/** - * sysfs_remove_one - remove sysfs_dirent from parent - * @acxt: addrm context to use - * @sd: sysfs_dirent to be removed - * - * Mark @sd removed and drop nlink of parent inode if @sd is a - * directory. @sd is unlinked from the children list. - * - * This function should be called between calls to - * sysfs_addrm_start() and sysfs_addrm_finish() and should be - * passed the same @acxt as passed to sysfs_addrm_start(). - * - * LOCKING: - * Determined by sysfs_addrm_start(). - */ -static void sysfs_remove_one(struct sysfs_addrm_cxt *acxt, - struct sysfs_dirent *sd) -{ - struct sysfs_inode_attrs *ps_iattr; - - /* - * Removal can be called multiple times on the same node. Only the - * first invocation is effective and puts the base ref. - */ - if (sd->s_flags & SYSFS_FLAG_REMOVED) - return; - - sysfs_unlink_sibling(sd); - - /* Update timestamps on the parent */ - ps_iattr = sd->s_parent->s_iattr; - if (ps_iattr) { - struct iattr *ps_iattrs = &ps_iattr->ia_iattr; - ps_iattrs->ia_ctime = ps_iattrs->ia_mtime = CURRENT_TIME; - } - - sd->s_flags |= SYSFS_FLAG_REMOVED; - sd->u.removed_list = acxt->removed; - acxt->removed = sd; -} - -/** - * sysfs_addrm_finish - finish up sysfs_dirent add/remove - * @acxt: addrm context to finish up - * - * Finish up sysfs_dirent add/remove. Resources acquired by - * sysfs_addrm_start() are released and removed sysfs_dirents are - * cleaned up. - * - * LOCKING: - * sysfs_mutex is released. - */ -void sysfs_addrm_finish(struct sysfs_addrm_cxt *acxt) - __releases(sysfs_mutex) -{ - /* release resources acquired by sysfs_addrm_start() */ - mutex_unlock(&sysfs_mutex); - - /* kill removed sysfs_dirents */ - while (acxt->removed) { - struct sysfs_dirent *sd = acxt->removed; - - acxt->removed = sd->u.removed_list; - - sysfs_deactivate(sd); - sysfs_unmap_bin_file(sd); - sysfs_put(sd); - } -} - -/** - * sysfs_find_dirent - find sysfs_dirent with the given name - * @parent_sd: sysfs_dirent to search under - * @name: name to look for - * @ns: the namespace tag to use - * - * Look for sysfs_dirent with name @name under @parent_sd. - * - * LOCKING: - * mutex_lock(sysfs_mutex) - * - * RETURNS: - * Pointer to sysfs_dirent if found, NULL if not. - */ -struct sysfs_dirent *sysfs_find_dirent(struct sysfs_dirent *parent_sd, - const unsigned char *name, - const void *ns) +void sysfs_warn_dup(struct kernfs_node *parent, const char *name) { - struct rb_node *node = parent_sd->s_dir.children.rb_node; - unsigned int hash; + char *buf, *path = NULL; - if (!!sysfs_ns_type(parent_sd) != !!ns) { - WARN(1, KERN_WARNING "sysfs: ns %s in '%s' for '%s'\n", - sysfs_ns_type(parent_sd) ? "required" : "invalid", - parent_sd->s_name, name); - return NULL; - } + buf = kzalloc(PATH_MAX, GFP_KERNEL); + if (buf) + path = kernfs_path(parent, buf, PATH_MAX); - hash = sysfs_name_hash(name, ns); - while (node) { - struct sysfs_dirent *sd; - int result; + WARN(1, KERN_WARNING "sysfs: cannot create duplicate filename '%s/%s'\n", + path, name); - sd = to_sysfs_dirent(node); - result = sysfs_name_compare(hash, name, ns, sd); - if (result < 0) - node = node->rb_left; - else if (result > 0) - node = node->rb_right; - else - return sd; - } - return NULL; -} - -/** - * sysfs_get_dirent_ns - find and get sysfs_dirent with the given name - * @parent_sd: sysfs_dirent to search under - * @name: name to look for - * @ns: the namespace tag to use - * - * Look for sysfs_dirent with name @name under @parent_sd and get - * it if found. - * - * LOCKING: - * Kernel thread context (may sleep). Grabs sysfs_mutex. - * - * RETURNS: - * Pointer to sysfs_dirent if found, NULL if not. - */ -struct sysfs_dirent *sysfs_get_dirent_ns(struct sysfs_dirent *parent_sd, - const unsigned char *name, - const void *ns) -{ - struct sysfs_dirent *sd; - - mutex_lock(&sysfs_mutex); - sd = sysfs_find_dirent(parent_sd, name, ns); - sysfs_get(sd); - mutex_unlock(&sysfs_mutex); - - return sd; -} -EXPORT_SYMBOL_GPL(sysfs_get_dirent_ns); - -static int create_dir(struct kobject *kobj, struct sysfs_dirent *parent_sd, - enum kobj_ns_type type, - const char *name, const void *ns, - struct sysfs_dirent **p_sd) -{ - umode_t mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO; - struct sysfs_addrm_cxt acxt; - struct sysfs_dirent *sd; - int rc; - - /* allocate */ - sd = sysfs_new_dirent(name, mode, SYSFS_DIR); - if (!sd) - return -ENOMEM; - - sd->s_flags |= (type << SYSFS_NS_TYPE_SHIFT); - sd->s_ns = ns; - sd->s_dir.kobj = kobj; - - /* link in */ - sysfs_addrm_start(&acxt); - rc = sysfs_add_one(&acxt, sd, parent_sd); - sysfs_addrm_finish(&acxt); - - if (rc == 0) - *p_sd = sd; - else - sysfs_put(sd); - - return rc; -} - -int sysfs_create_subdir(struct kobject *kobj, const char *name, - struct sysfs_dirent **p_sd) -{ - return create_dir(kobj, kobj->sd, - KOBJ_NS_TYPE_NONE, name, NULL, p_sd); -} - -/** - * sysfs_read_ns_type: return associated ns_type - * @kobj: the kobject being queried - * - * Each kobject can be tagged with exactly one namespace type - * (i.e. network or user). Return the ns_type associated with - * this object if any - */ -static enum kobj_ns_type sysfs_read_ns_type(struct kobject *kobj) -{ - const struct kobj_ns_type_operations *ops; - enum kobj_ns_type type; - - ops = kobj_child_ns_ops(kobj); - if (!ops) - return KOBJ_NS_TYPE_NONE; - - type = ops->type; - BUG_ON(type <= KOBJ_NS_TYPE_NONE); - BUG_ON(type >= KOBJ_NS_TYPES); - BUG_ON(!kobj_ns_type_registered(type)); - - return type; + kfree(buf); } /** @@ -737,197 +40,28 @@ static enum kobj_ns_type sysfs_read_ns_type(struct kobject *kobj) */ int sysfs_create_dir_ns(struct kobject *kobj, const void *ns) { - enum kobj_ns_type type; - struct sysfs_dirent *parent_sd, *sd; - int error = 0; + struct kernfs_node *parent, *kn; BUG_ON(!kobj); if (kobj->parent) - parent_sd = kobj->parent->sd; + parent = kobj->parent->sd; else - parent_sd = &sysfs_root; + parent = sysfs_root_kn; - if (!parent_sd) + if (!parent) return -ENOENT; - type = sysfs_read_ns_type(kobj); - - error = create_dir(kobj, parent_sd, type, kobject_name(kobj), ns, &sd); - if (!error) - kobj->sd = sd; - return error; -} - -static struct dentry *sysfs_lookup(struct inode *dir, struct dentry *dentry, - unsigned int flags) -{ - struct dentry *ret = NULL; - struct dentry *parent = dentry->d_parent; - struct sysfs_dirent *parent_sd = parent->d_fsdata; - struct sysfs_dirent *sd; - struct inode *inode; - enum kobj_ns_type type; - const void *ns; - - mutex_lock(&sysfs_mutex); - - type = sysfs_ns_type(parent_sd); - ns = sysfs_info(dir->i_sb)->ns[type]; - - sd = sysfs_find_dirent(parent_sd, dentry->d_name.name, ns); - - /* no such entry */ - if (!sd) { - ret = ERR_PTR(-ENOENT); - goto out_unlock; - } - dentry->d_fsdata = sysfs_get(sd); - - /* attach dentry and inode */ - inode = sysfs_get_inode(dir->i_sb, sd); - if (!inode) { - ret = ERR_PTR(-ENOMEM); - goto out_unlock; - } - - /* instantiate and hash dentry */ - ret = d_materialise_unique(dentry, inode); - out_unlock: - mutex_unlock(&sysfs_mutex); - return ret; -} - -const struct inode_operations sysfs_dir_inode_operations = { - .lookup = sysfs_lookup, - .permission = sysfs_permission, - .setattr = sysfs_setattr, - .getattr = sysfs_getattr, - .setxattr = sysfs_setxattr, -}; - -static struct sysfs_dirent *sysfs_leftmost_descendant(struct sysfs_dirent *pos) -{ - struct sysfs_dirent *last; - - while (true) { - struct rb_node *rbn; - - last = pos; - - if (sysfs_type(pos) != SYSFS_DIR) - break; - - rbn = rb_first(&pos->s_dir.children); - if (!rbn) - break; - - pos = to_sysfs_dirent(rbn); + kn = kernfs_create_dir_ns(parent, kobject_name(kobj), + S_IRWXU | S_IRUGO | S_IXUGO, kobj, ns); + if (IS_ERR(kn)) { + if (PTR_ERR(kn) == -EEXIST) + sysfs_warn_dup(parent, kobject_name(kobj)); + return PTR_ERR(kn); } - return last; -} - -/** - * sysfs_next_descendant_post - find the next descendant for post-order walk - * @pos: the current position (%NULL to initiate traversal) - * @root: sysfs_dirent whose descendants to walk - * - * Find the next descendant to visit for post-order traversal of @root's - * descendants. @root is included in the iteration and the last node to be - * visited. - */ -static struct sysfs_dirent *sysfs_next_descendant_post(struct sysfs_dirent *pos, - struct sysfs_dirent *root) -{ - struct rb_node *rbn; - - lockdep_assert_held(&sysfs_mutex); - - /* if first iteration, visit leftmost descendant which may be root */ - if (!pos) - return sysfs_leftmost_descendant(root); - - /* if we visited @root, we're done */ - if (pos == root) - return NULL; - - /* if there's an unvisited sibling, visit its leftmost descendant */ - rbn = rb_next(&pos->s_rb); - if (rbn) - return sysfs_leftmost_descendant(to_sysfs_dirent(rbn)); - - /* no sibling left, visit parent */ - return pos->s_parent; -} - -static void __sysfs_remove(struct sysfs_addrm_cxt *acxt, - struct sysfs_dirent *sd) -{ - struct sysfs_dirent *pos, *next; - - if (!sd) - return; - - pr_debug("sysfs %s: removing\n", sd->s_name); - - next = NULL; - do { - pos = next; - next = sysfs_next_descendant_post(pos, sd); - if (pos) - sysfs_remove_one(acxt, pos); - } while (next); -} - -/** - * sysfs_remove - remove a sysfs_dirent recursively - * @sd: the sysfs_dirent to remove - * - * Remove @sd along with all its subdirectories and files. - */ -void sysfs_remove(struct sysfs_dirent *sd) -{ - struct sysfs_addrm_cxt acxt; - - sysfs_addrm_start(&acxt); - __sysfs_remove(&acxt, sd); - sysfs_addrm_finish(&acxt); -} - -/** - * sysfs_hash_and_remove - find a sysfs_dirent by name and remove it - * @dir_sd: parent of the target - * @name: name of the sysfs_dirent to remove - * @ns: namespace tag of the sysfs_dirent to remove - * - * Look for the sysfs_dirent with @name and @ns under @dir_sd and remove - * it. Returns 0 on success, -ENOENT if such entry doesn't exist. - */ -int sysfs_hash_and_remove(struct sysfs_dirent *dir_sd, const char *name, - const void *ns) -{ - struct sysfs_addrm_cxt acxt; - struct sysfs_dirent *sd; - - if (!dir_sd) { - WARN(1, KERN_WARNING "sysfs: can not remove '%s', no directory\n", - name); - return -ENOENT; - } - - sysfs_addrm_start(&acxt); - - sd = sysfs_find_dirent(dir_sd, name, ns); - if (sd) - __sysfs_remove(&acxt, sd); - - sysfs_addrm_finish(&acxt); - - if (sd) - return 0; - else - return -ENOENT; + kobj->sd = kn; + return 0; } /** @@ -940,207 +74,50 @@ int sysfs_hash_and_remove(struct sysfs_dirent *dir_sd, const char *name, */ void sysfs_remove_dir(struct kobject *kobj) { - struct sysfs_dirent *sd = kobj->sd; + struct kernfs_node *kn = kobj->sd; /* * In general, kboject owner is responsible for ensuring removal * doesn't race with other operations and sysfs doesn't provide any * protection; however, when @kobj is used as a symlink target, the * symlinking entity usually doesn't own @kobj and thus has no - * control over removal. @kobj->sd may be removed anytime and - * symlink code may end up dereferencing an already freed sd. + * control over removal. @kobj->sd may be removed anytime + * and symlink code may end up dereferencing an already freed node. * - * sysfs_symlink_target_lock synchronizes @kobj->sd disassociation - * against symlink operations so that symlink code can safely - * dereference @kobj->sd. + * sysfs_symlink_target_lock synchronizes @kobj->sd + * disassociation against symlink operations so that symlink code + * can safely dereference @kobj->sd. */ spin_lock(&sysfs_symlink_target_lock); kobj->sd = NULL; spin_unlock(&sysfs_symlink_target_lock); - if (sd) { - WARN_ON_ONCE(sysfs_type(sd) != SYSFS_DIR); - sysfs_remove(sd); + if (kn) { + WARN_ON_ONCE(kernfs_type(kn) != KERNFS_DIR); + kernfs_remove(kn); } } -int sysfs_rename(struct sysfs_dirent *sd, struct sysfs_dirent *new_parent_sd, - const char *new_name, const void *new_ns) -{ - int error; - - mutex_lock(&sysfs_mutex); - - error = 0; - if ((sd->s_parent == new_parent_sd) && (sd->s_ns == new_ns) && - (strcmp(sd->s_name, new_name) == 0)) - goto out; /* nothing to rename */ - - error = -EEXIST; - if (sysfs_find_dirent(new_parent_sd, new_name, new_ns)) - goto out; - - /* rename sysfs_dirent */ - if (strcmp(sd->s_name, new_name) != 0) { - error = -ENOMEM; - new_name = kstrdup(new_name, GFP_KERNEL); - if (!new_name) - goto out; - - kfree(sd->s_name); - sd->s_name = new_name; - } - - /* - * Move to the appropriate place in the appropriate directories rbtree. - */ - sysfs_unlink_sibling(sd); - sysfs_get(new_parent_sd); - sysfs_put(sd->s_parent); - sd->s_ns = new_ns; - sd->s_hash = sysfs_name_hash(sd->s_name, sd->s_ns); - sd->s_parent = new_parent_sd; - sysfs_link_sibling(sd); - - error = 0; - out: - mutex_unlock(&sysfs_mutex); - return error; -} - int sysfs_rename_dir_ns(struct kobject *kobj, const char *new_name, const void *new_ns) { - struct sysfs_dirent *parent_sd = kobj->sd->s_parent; + struct kernfs_node *parent; + int ret; - return sysfs_rename(kobj->sd, parent_sd, new_name, new_ns); + parent = kernfs_get_parent(kobj->sd); + ret = kernfs_rename_ns(kobj->sd, parent, new_name, new_ns); + kernfs_put(parent); + return ret; } int sysfs_move_dir_ns(struct kobject *kobj, struct kobject *new_parent_kobj, const void *new_ns) { - struct sysfs_dirent *sd = kobj->sd; - struct sysfs_dirent *new_parent_sd; + struct kernfs_node *kn = kobj->sd; + struct kernfs_node *new_parent; - BUG_ON(!sd->s_parent); - new_parent_sd = new_parent_kobj && new_parent_kobj->sd ? - new_parent_kobj->sd : &sysfs_root; + new_parent = new_parent_kobj && new_parent_kobj->sd ? + new_parent_kobj->sd : sysfs_root_kn; - return sysfs_rename(sd, new_parent_sd, sd->s_name, new_ns); + return kernfs_rename_ns(kn, new_parent, kn->name, new_ns); } - -/* Relationship between s_mode and the DT_xxx types */ -static inline unsigned char dt_type(struct sysfs_dirent *sd) -{ - return (sd->s_mode >> 12) & 15; -} - -static int sysfs_dir_release(struct inode *inode, struct file *filp) -{ - sysfs_put(filp->private_data); - return 0; -} - -static struct sysfs_dirent *sysfs_dir_pos(const void *ns, - struct sysfs_dirent *parent_sd, loff_t hash, struct sysfs_dirent *pos) -{ - if (pos) { - int valid = !(pos->s_flags & SYSFS_FLAG_REMOVED) && - pos->s_parent == parent_sd && - hash == pos->s_hash; - sysfs_put(pos); - if (!valid) - pos = NULL; - } - if (!pos && (hash > 1) && (hash < INT_MAX)) { - struct rb_node *node = parent_sd->s_dir.children.rb_node; - while (node) { - pos = to_sysfs_dirent(node); - - if (hash < pos->s_hash) - node = node->rb_left; - else if (hash > pos->s_hash) - node = node->rb_right; - else - break; - } - } - /* Skip over entries in the wrong namespace */ - while (pos && pos->s_ns != ns) { - struct rb_node *node = rb_next(&pos->s_rb); - if (!node) - pos = NULL; - else - pos = to_sysfs_dirent(node); - } - return pos; -} - -static struct sysfs_dirent *sysfs_dir_next_pos(const void *ns, - struct sysfs_dirent *parent_sd, ino_t ino, struct sysfs_dirent *pos) -{ - pos = sysfs_dir_pos(ns, parent_sd, ino, pos); - if (pos) - do { - struct rb_node *node = rb_next(&pos->s_rb); - if (!node) - pos = NULL; - else - pos = to_sysfs_dirent(node); - } while (pos && pos->s_ns != ns); - return pos; -} - -static int sysfs_readdir(struct file *file, struct dir_context *ctx) -{ - struct dentry *dentry = file->f_path.dentry; - struct sysfs_dirent *parent_sd = dentry->d_fsdata; - struct sysfs_dirent *pos = file->private_data; - enum kobj_ns_type type; - const void *ns; - - type = sysfs_ns_type(parent_sd); - ns = sysfs_info(dentry->d_sb)->ns[type]; - - if (!dir_emit_dots(file, ctx)) - return 0; - mutex_lock(&sysfs_mutex); - for (pos = sysfs_dir_pos(ns, parent_sd, ctx->pos, pos); - pos; - pos = sysfs_dir_next_pos(ns, parent_sd, ctx->pos, pos)) { - const char *name = pos->s_name; - unsigned int type = dt_type(pos); - int len = strlen(name); - ino_t ino = pos->s_ino; - ctx->pos = pos->s_hash; - file->private_data = sysfs_get(pos); - - mutex_unlock(&sysfs_mutex); - if (!dir_emit(ctx, name, len, ino, type)) - return 0; - mutex_lock(&sysfs_mutex); - } - mutex_unlock(&sysfs_mutex); - file->private_data = NULL; - ctx->pos = INT_MAX; - return 0; -} - -static loff_t sysfs_dir_llseek(struct file *file, loff_t offset, int whence) -{ - struct inode *inode = file_inode(file); - loff_t ret; - - mutex_lock(&inode->i_mutex); - ret = generic_file_llseek(file, offset, whence); - mutex_unlock(&inode->i_mutex); - - return ret; -} - -const struct file_operations sysfs_dir_operations = { - .read = generic_read_dir, - .iterate = sysfs_readdir, - .release = sysfs_dir_release, - .llseek = sysfs_dir_llseek, -}; diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c index 35e7d08fe629..1b8b91b67fdb 100644 --- a/fs/sysfs/file.c +++ b/fs/sysfs/file.c @@ -14,70 +14,23 @@ #include <linux/kobject.h> #include <linux/kallsyms.h> #include <linux/slab.h> -#include <linux/fsnotify.h> -#include <linux/namei.h> -#include <linux/poll.h> #include <linux/list.h> #include <linux/mutex.h> -#include <linux/limits.h> -#include <linux/uaccess.h> #include <linux/seq_file.h> -#include <linux/mm.h> #include "sysfs.h" +#include "../kernfs/kernfs-internal.h" /* - * There's one sysfs_open_file for each open file and one sysfs_open_dirent - * for each sysfs_dirent with one or more open files. - * - * sysfs_dirent->s_attr.open points to sysfs_open_dirent. s_attr.open is - * protected by sysfs_open_dirent_lock. - * - * filp->private_data points to seq_file whose ->private points to - * sysfs_open_file. sysfs_open_files are chained at - * sysfs_open_dirent->files, which is protected by sysfs_open_file_mutex. - */ -static DEFINE_SPINLOCK(sysfs_open_dirent_lock); -static DEFINE_MUTEX(sysfs_open_file_mutex); - -struct sysfs_open_dirent { - atomic_t refcnt; - atomic_t event; - wait_queue_head_t poll; - struct list_head files; /* goes through sysfs_open_file.list */ -}; - -struct sysfs_open_file { - struct sysfs_dirent *sd; - struct file *file; - struct mutex mutex; - int event; - struct list_head list; - - bool mmapped; - const struct vm_operations_struct *vm_ops; -}; - -static bool sysfs_is_bin(struct sysfs_dirent *sd) -{ - return sysfs_type(sd) == SYSFS_KOBJ_BIN_ATTR; -} - -static struct sysfs_open_file *sysfs_of(struct file *file) -{ - return ((struct seq_file *)file->private_data)->private; -} - -/* - * Determine ktype->sysfs_ops for the given sysfs_dirent. This function + * Determine ktype->sysfs_ops for the given kernfs_node. This function * must be called while holding an active reference. */ -static const struct sysfs_ops *sysfs_file_ops(struct sysfs_dirent *sd) +static const struct sysfs_ops *sysfs_file_ops(struct kernfs_node *kn) { - struct kobject *kobj = sd->s_parent->s_dir.kobj; + struct kobject *kobj = kn->parent->priv; - if (!sysfs_ignore_lockdep(sd)) - lockdep_assert_held(sd); + if (kn->flags & KERNFS_LOCKDEP) + lockdep_assert_held(kn); return kobj->ktype ? kobj->ktype->sysfs_ops : NULL; } @@ -86,13 +39,13 @@ static const struct sysfs_ops *sysfs_file_ops(struct sysfs_dirent *sd) * details like buffering and seeking. The following function pipes * sysfs_ops->show() result through seq_file. */ -static int sysfs_seq_show(struct seq_file *sf, void *v) +static int sysfs_kf_seq_show(struct seq_file *sf, void *v) { - struct sysfs_open_file *of = sf->private; - struct kobject *kobj = of->sd->s_parent->s_dir.kobj; - const struct sysfs_ops *ops; - char *buf; + struct kernfs_open_file *of = sf->private; + struct kobject *kobj = of->kn->parent->priv; + const struct sysfs_ops *ops = sysfs_file_ops(of->kn); ssize_t count; + char *buf; /* acquire buffer and ensure that it's >= PAGE_SIZE */ count = seq_get_buf(sf, &buf); @@ -102,34 +55,15 @@ static int sysfs_seq_show(struct seq_file *sf, void *v) } /* - * Need @of->sd for attr and ops, its parent for kobj. @of->mutex - * nests outside active ref and is just to ensure that the ops - * aren't called concurrently for the same open file. + * Invoke show(). Control may reach here via seq file lseek even + * if @ops->show() isn't implemented. */ - mutex_lock(&of->mutex); - if (!sysfs_get_active(of->sd)) { - mutex_unlock(&of->mutex); - return -ENODEV; + if (ops->show) { + count = ops->show(kobj, of->kn->priv, buf); + if (count < 0) + return count; } - of->event = atomic_read(&of->sd->s_attr.open->event); - - /* - * Lookup @ops and invoke show(). Control may reach here via seq - * file lseek even if @ops->show() isn't implemented. - */ - ops = sysfs_file_ops(of->sd); - if (ops->show) - count = ops->show(kobj, of->sd->s_attr.attr, buf); - else - count = 0; - - sysfs_put_active(of->sd); - mutex_unlock(&of->mutex); - - if (count < 0) - return count; - /* * The code works fine with PAGE_SIZE return but it's likely to * indicate truncated result or overflow in normal use cases. @@ -144,726 +78,194 @@ static int sysfs_seq_show(struct seq_file *sf, void *v) return 0; } -/* - * Read method for bin files. As reading a bin file can have side-effects, - * the exact offset and bytes specified in read(2) call should be passed to - * the read callback making it difficult to use seq_file. Implement - * simplistic custom buffering for bin files. - */ -static ssize_t sysfs_bin_read(struct file *file, char __user *userbuf, - size_t bytes, loff_t *off) +static ssize_t sysfs_kf_bin_read(struct kernfs_open_file *of, char *buf, + size_t count, loff_t pos) { - struct sysfs_open_file *of = sysfs_of(file); - struct bin_attribute *battr = of->sd->s_attr.bin_attr; - struct kobject *kobj = of->sd->s_parent->s_dir.kobj; - loff_t size = file_inode(file)->i_size; - int count = min_t(size_t, bytes, PAGE_SIZE); - loff_t offs = *off; - char *buf; + struct bin_attribute *battr = of->kn->priv; + struct kobject *kobj = of->kn->parent->priv; + loff_t size = file_inode(of->file)->i_size; - if (!bytes) + if (!count) return 0; if (size) { - if (offs > size) + if (pos > size) return 0; - if (offs + count > size) - count = size - offs; - } - - buf = kmalloc(count, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - /* need of->sd for battr, its parent for kobj */ - mutex_lock(&of->mutex); - if (!sysfs_get_active(of->sd)) { - count = -ENODEV; - mutex_unlock(&of->mutex); - goto out_free; - } - - if (battr->read) - count = battr->read(file, kobj, battr, buf, offs, count); - else - count = -EIO; - - sysfs_put_active(of->sd); - mutex_unlock(&of->mutex); - - if (count < 0) - goto out_free; - - if (copy_to_user(userbuf, buf, count)) { - count = -EFAULT; - goto out_free; + if (pos + count > size) + count = size - pos; } - pr_debug("offs = %lld, *off = %lld, count = %d\n", offs, *off, count); + if (!battr->read) + return -EIO; - *off = offs + count; - - out_free: - kfree(buf); - return count; + return battr->read(of->file, kobj, battr, buf, pos, count); } -/** - * flush_write_buffer - push buffer to kobject - * @of: open file - * @buf: data buffer for file - * @off: file offset to write to - * @count: number of bytes - * - * Get the correct pointers for the kobject and the attribute we're dealing - * with, then call the store() method for it with @buf. - */ -static int flush_write_buffer(struct sysfs_open_file *of, char *buf, loff_t off, - size_t count) +/* kernfs write callback for regular sysfs files */ +static ssize_t sysfs_kf_write(struct kernfs_open_file *of, char *buf, + size_t count, loff_t pos) { - struct kobject *kobj = of->sd->s_parent->s_dir.kobj; - int rc = 0; - - /* - * Need @of->sd for attr and ops, its parent for kobj. @of->mutex - * nests outside active ref and is just to ensure that the ops - * aren't called concurrently for the same open file. - */ - mutex_lock(&of->mutex); - if (!sysfs_get_active(of->sd)) { - mutex_unlock(&of->mutex); - return -ENODEV; - } - - if (sysfs_is_bin(of->sd)) { - struct bin_attribute *battr = of->sd->s_attr.bin_attr; - - rc = -EIO; - if (battr->write) - rc = battr->write(of->file, kobj, battr, buf, off, - count); - } else { - const struct sysfs_ops *ops = sysfs_file_ops(of->sd); + const struct sysfs_ops *ops = sysfs_file_ops(of->kn); + struct kobject *kobj = of->kn->parent->priv; - rc = ops->store(kobj, of->sd->s_attr.attr, buf, count); - } - - sysfs_put_active(of->sd); - mutex_unlock(&of->mutex); + if (!count) + return 0; - return rc; + return ops->store(kobj, of->kn->priv, buf, count); } -/** - * sysfs_write_file - write an attribute - * @file: file pointer - * @user_buf: data to write - * @count: number of bytes - * @ppos: starting offset - * - * Copy data in from userland and pass it to the matching - * sysfs_ops->store() by invoking flush_write_buffer(). - * - * There is no easy way for us to know if userspace is only doing a partial - * write, so we don't support them. We expect the entire buffer to come on - * the first write. Hint: if you're writing a value, first read the file, - * modify only the the value you're changing, then write entire buffer - * back. - */ -static ssize_t sysfs_write_file(struct file *file, const char __user *user_buf, - size_t count, loff_t *ppos) +/* kernfs write callback for bin sysfs files */ +static ssize_t sysfs_kf_bin_write(struct kernfs_open_file *of, char *buf, + size_t count, loff_t pos) { - struct sysfs_open_file *of = sysfs_of(file); - ssize_t len = min_t(size_t, count, PAGE_SIZE); - loff_t size = file_inode(file)->i_size; - char *buf; + struct bin_attribute *battr = of->kn->priv; + struct kobject *kobj = of->kn->parent->priv; + loff_t size = file_inode(of->file)->i_size; - if (sysfs_is_bin(of->sd) && size) { - if (size <= *ppos) + if (size) { + if (size <= pos) return 0; - len = min_t(ssize_t, len, size - *ppos); + count = min_t(ssize_t, count, size - pos); } - - if (!len) + if (!count) return 0; - buf = kmalloc(len + 1, GFP_KERNEL); - if (!buf) - return -ENOMEM; + if (!battr->write) + return -EIO; - if (copy_from_user(buf, user_buf, len)) { - len = -EFAULT; - goto out_free; - } - buf[len] = '\0'; /* guarantee string termination */ - - len = flush_write_buffer(of, buf, *ppos, len); - if (len > 0) - *ppos += len; -out_free: - kfree(buf); - return len; + return battr->write(of->file, kobj, battr, buf, pos, count); } -static void sysfs_bin_vma_open(struct vm_area_struct *vma) +static int sysfs_kf_bin_mmap(struct kernfs_open_file *of, + struct vm_area_struct *vma) { - struct file *file = vma->vm_file; - struct sysfs_open_file *of = sysfs_of(file); - - if (!of->vm_ops) - return; - - if (!sysfs_get_active(of->sd)) - return; - - if (of->vm_ops->open) - of->vm_ops->open(vma); + struct bin_attribute *battr = of->kn->priv; + struct kobject *kobj = of->kn->parent->priv; - sysfs_put_active(of->sd); + return battr->mmap(of->file, kobj, battr, vma); } -static int sysfs_bin_fault(struct vm_area_struct *vma, struct vm_fault *vmf) +void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr) { - struct file *file = vma->vm_file; - struct sysfs_open_file *of = sysfs_of(file); - int ret; + struct kernfs_node *kn = kobj->sd, *tmp; - if (!of->vm_ops) - return VM_FAULT_SIGBUS; - - if (!sysfs_get_active(of->sd)) - return VM_FAULT_SIGBUS; - - ret = VM_FAULT_SIGBUS; - if (of->vm_ops->fault) - ret = of->vm_ops->fault(vma, vmf); - - sysfs_put_active(of->sd); - return ret; -} - -static int sysfs_bin_page_mkwrite(struct vm_area_struct *vma, - struct vm_fault *vmf) -{ - struct file *file = vma->vm_file; - struct sysfs_open_file *of = sysfs_of(file); - int ret; - - if (!of->vm_ops) - return VM_FAULT_SIGBUS; - - if (!sysfs_get_active(of->sd)) - return VM_FAULT_SIGBUS; - - ret = 0; - if (of->vm_ops->page_mkwrite) - ret = of->vm_ops->page_mkwrite(vma, vmf); + if (kn && dir) + kn = kernfs_find_and_get(kn, dir); else - file_update_time(file); - - sysfs_put_active(of->sd); - return ret; -} - -static int sysfs_bin_access(struct vm_area_struct *vma, unsigned long addr, - void *buf, int len, int write) -{ - struct file *file = vma->vm_file; - struct sysfs_open_file *of = sysfs_of(file); - int ret; - - if (!of->vm_ops) - return -EINVAL; - - if (!sysfs_get_active(of->sd)) - return -EINVAL; - - ret = -EINVAL; - if (of->vm_ops->access) - ret = of->vm_ops->access(vma, addr, buf, len, write); - - sysfs_put_active(of->sd); - return ret; -} - -#ifdef CONFIG_NUMA -static int sysfs_bin_set_policy(struct vm_area_struct *vma, - struct mempolicy *new) -{ - struct file *file = vma->vm_file; - struct sysfs_open_file *of = sysfs_of(file); - int ret; - - if (!of->vm_ops) - return 0; - - if (!sysfs_get_active(of->sd)) - return -EINVAL; - - ret = 0; - if (of->vm_ops->set_policy) - ret = of->vm_ops->set_policy(vma, new); - - sysfs_put_active(of->sd); - return ret; -} - -static struct mempolicy *sysfs_bin_get_policy(struct vm_area_struct *vma, - unsigned long addr) -{ - struct file *file = vma->vm_file; - struct sysfs_open_file *of = sysfs_of(file); - struct mempolicy *pol; - - if (!of->vm_ops) - return vma->vm_policy; - - if (!sysfs_get_active(of->sd)) - return vma->vm_policy; - - pol = vma->vm_policy; - if (of->vm_ops->get_policy) - pol = of->vm_ops->get_policy(vma, addr); - - sysfs_put_active(of->sd); - return pol; -} - -static int sysfs_bin_migrate(struct vm_area_struct *vma, const nodemask_t *from, - const nodemask_t *to, unsigned long flags) -{ - struct file *file = vma->vm_file; - struct sysfs_open_file *of = sysfs_of(file); - int ret; - - if (!of->vm_ops) - return 0; - - if (!sysfs_get_active(of->sd)) - return 0; - - ret = 0; - if (of->vm_ops->migrate) - ret = of->vm_ops->migrate(vma, from, to, flags); - - sysfs_put_active(of->sd); - return ret; -} -#endif - -static const struct vm_operations_struct sysfs_bin_vm_ops = { - .open = sysfs_bin_vma_open, - .fault = sysfs_bin_fault, - .page_mkwrite = sysfs_bin_page_mkwrite, - .access = sysfs_bin_access, -#ifdef CONFIG_NUMA - .set_policy = sysfs_bin_set_policy, - .get_policy = sysfs_bin_get_policy, - .migrate = sysfs_bin_migrate, -#endif -}; - -static int sysfs_bin_mmap(struct file *file, struct vm_area_struct *vma) -{ - struct sysfs_open_file *of = sysfs_of(file); - struct bin_attribute *battr = of->sd->s_attr.bin_attr; - struct kobject *kobj = of->sd->s_parent->s_dir.kobj; - int rc; - - mutex_lock(&of->mutex); - - /* need of->sd for battr, its parent for kobj */ - rc = -ENODEV; - if (!sysfs_get_active(of->sd)) - goto out_unlock; - - if (!battr->mmap) - goto out_put; - - rc = battr->mmap(file, kobj, battr, vma); - if (rc) - goto out_put; - - /* - * PowerPC's pci_mmap of legacy_mem uses shmem_zero_setup() - * to satisfy versions of X which crash if the mmap fails: that - * substitutes a new vm_file, and we don't then want bin_vm_ops. - */ - if (vma->vm_file != file) - goto out_put; - - rc = -EINVAL; - if (of->mmapped && of->vm_ops != vma->vm_ops) - goto out_put; - - /* - * It is not possible to successfully wrap close. - * So error if someone is trying to use close. - */ - rc = -EINVAL; - if (vma->vm_ops && vma->vm_ops->close) - goto out_put; - - rc = 0; - of->mmapped = 1; - of->vm_ops = vma->vm_ops; - vma->vm_ops = &sysfs_bin_vm_ops; -out_put: - sysfs_put_active(of->sd); -out_unlock: - mutex_unlock(&of->mutex); + kernfs_get(kn); - return rc; -} - -/** - * sysfs_get_open_dirent - get or create sysfs_open_dirent - * @sd: target sysfs_dirent - * @of: sysfs_open_file for this instance of open - * - * If @sd->s_attr.open exists, increment its reference count; - * otherwise, create one. @of is chained to the files list. - * - * LOCKING: - * Kernel thread context (may sleep). - * - * RETURNS: - * 0 on success, -errno on failure. - */ -static int sysfs_get_open_dirent(struct sysfs_dirent *sd, - struct sysfs_open_file *of) -{ - struct sysfs_open_dirent *od, *new_od = NULL; - - retry: - mutex_lock(&sysfs_open_file_mutex); - spin_lock_irq(&sysfs_open_dirent_lock); - - if (!sd->s_attr.open && new_od) { - sd->s_attr.open = new_od; - new_od = NULL; - } - - od = sd->s_attr.open; - if (od) { - atomic_inc(&od->refcnt); - list_add_tail(&of->list, &od->files); + if (kn && attr) { + tmp = kernfs_find_and_get(kn, attr); + kernfs_put(kn); + kn = tmp; } - spin_unlock_irq(&sysfs_open_dirent_lock); - mutex_unlock(&sysfs_open_file_mutex); - - if (od) { - kfree(new_od); - return 0; + if (kn) { + kernfs_notify(kn); + kernfs_put(kn); } +} +EXPORT_SYMBOL_GPL(sysfs_notify); - /* not there, initialize a new one and retry */ - new_od = kmalloc(sizeof(*new_od), GFP_KERNEL); - if (!new_od) - return -ENOMEM; +static const struct kernfs_ops sysfs_file_kfops_empty = { +}; - atomic_set(&new_od->refcnt, 0); - atomic_set(&new_od->event, 1); - init_waitqueue_head(&new_od->poll); - INIT_LIST_HEAD(&new_od->files); - goto retry; -} +static const struct kernfs_ops sysfs_file_kfops_ro = { + .seq_show = sysfs_kf_seq_show, +}; -/** - * sysfs_put_open_dirent - put sysfs_open_dirent - * @sd: target sysfs_dirent - * @of: associated sysfs_open_file - * - * Put @sd->s_attr.open and unlink @of from the files list. If - * reference count reaches zero, disassociate and free it. - * - * LOCKING: - * None. - */ -static void sysfs_put_open_dirent(struct sysfs_dirent *sd, - struct sysfs_open_file *of) -{ - struct sysfs_open_dirent *od = sd->s_attr.open; - unsigned long flags; +static const struct kernfs_ops sysfs_file_kfops_wo = { + .write = sysfs_kf_write, +}; - mutex_lock(&sysfs_open_file_mutex); - spin_lock_irqsave(&sysfs_open_dirent_lock, flags); +static const struct kernfs_ops sysfs_file_kfops_rw = { + .seq_show = sysfs_kf_seq_show, + .write = sysfs_kf_write, +}; - if (of) - list_del(&of->list); +static const struct kernfs_ops sysfs_bin_kfops_ro = { + .read = sysfs_kf_bin_read, +}; - if (atomic_dec_and_test(&od->refcnt)) - sd->s_attr.open = NULL; - else - od = NULL; +static const struct kernfs_ops sysfs_bin_kfops_wo = { + .write = sysfs_kf_bin_write, +}; - spin_unlock_irqrestore(&sysfs_open_dirent_lock, flags); - mutex_unlock(&sysfs_open_file_mutex); +static const struct kernfs_ops sysfs_bin_kfops_rw = { + .read = sysfs_kf_bin_read, + .write = sysfs_kf_bin_write, +}; - kfree(od); -} +static const struct kernfs_ops sysfs_bin_kfops_mmap = { + .read = sysfs_kf_bin_read, + .write = sysfs_kf_bin_write, + .mmap = sysfs_kf_bin_mmap, +}; -static int sysfs_open_file(struct inode *inode, struct file *file) +int sysfs_add_file_mode_ns(struct kernfs_node *parent, + const struct attribute *attr, bool is_bin, + umode_t mode, const void *ns) { - struct sysfs_dirent *attr_sd = file->f_path.dentry->d_fsdata; - struct kobject *kobj = attr_sd->s_parent->s_dir.kobj; - struct sysfs_open_file *of; - bool has_read, has_write; - int error = -EACCES; - - /* need attr_sd for attr and ops, its parent for kobj */ - if (!sysfs_get_active(attr_sd)) - return -ENODEV; + struct lock_class_key *key = NULL; + const struct kernfs_ops *ops; + struct kernfs_node *kn; + loff_t size; - if (sysfs_is_bin(attr_sd)) { - struct bin_attribute *battr = attr_sd->s_attr.bin_attr; - - has_read = battr->read || battr->mmap; - has_write = battr->write || battr->mmap; - } else { - const struct sysfs_ops *ops = sysfs_file_ops(attr_sd); + if (!is_bin) { + struct kobject *kobj = parent->priv; + const struct sysfs_ops *sysfs_ops = kobj->ktype->sysfs_ops; /* every kobject with an attribute needs a ktype assigned */ - if (WARN(!ops, KERN_ERR + if (WARN(!sysfs_ops, KERN_ERR "missing sysfs attribute operations for kobject: %s\n", kobject_name(kobj))) - goto err_out; - - has_read = ops->show; - has_write = ops->store; - } - - /* check perms and supported operations */ - if ((file->f_mode & FMODE_WRITE) && - (!(inode->i_mode & S_IWUGO) || !has_write)) - goto err_out; - - if ((file->f_mode & FMODE_READ) && - (!(inode->i_mode & S_IRUGO) || !has_read)) - goto err_out; - - /* allocate a sysfs_open_file for the file */ - error = -ENOMEM; - of = kzalloc(sizeof(struct sysfs_open_file), GFP_KERNEL); - if (!of) - goto err_out; - - /* - * The following is done to give a different lockdep key to - * @of->mutex for files which implement mmap. This is a rather - * crude way to avoid false positive lockdep warning around - * mm->mmap_sem - mmap nests @of->mutex under mm->mmap_sem and - * reading /sys/block/sda/trace/act_mask grabs sr_mutex, under - * which mm->mmap_sem nests, while holding @of->mutex. As each - * open file has a separate mutex, it's okay as long as those don't - * happen on the same file. At this point, we can't easily give - * each file a separate locking class. Let's differentiate on - * whether the file is bin or not for now. - */ - if (sysfs_is_bin(attr_sd)) - mutex_init(&of->mutex); - else - mutex_init(&of->mutex); - - of->sd = attr_sd; - of->file = file; - - /* - * Always instantiate seq_file even if read access doesn't use - * seq_file or is not requested. This unifies private data access - * and readable regular files are the vast majority anyway. - */ - if (sysfs_is_bin(attr_sd)) - error = single_open(file, NULL, of); - else - error = single_open(file, sysfs_seq_show, of); - if (error) - goto err_free; - - /* seq_file clears PWRITE unconditionally, restore it if WRITE */ - if (file->f_mode & FMODE_WRITE) - file->f_mode |= FMODE_PWRITE; - - /* make sure we have open dirent struct */ - error = sysfs_get_open_dirent(attr_sd, of); - if (error) - goto err_close; - - /* open succeeded, put active references */ - sysfs_put_active(attr_sd); - return 0; - -err_close: - single_release(inode, file); -err_free: - kfree(of); -err_out: - sysfs_put_active(attr_sd); - return error; -} - -static int sysfs_release(struct inode *inode, struct file *filp) -{ - struct sysfs_dirent *sd = filp->f_path.dentry->d_fsdata; - struct sysfs_open_file *of = sysfs_of(filp); - - sysfs_put_open_dirent(sd, of); - single_release(inode, filp); - kfree(of); - - return 0; -} - -void sysfs_unmap_bin_file(struct sysfs_dirent *sd) -{ - struct sysfs_open_dirent *od; - struct sysfs_open_file *of; - - if (!sysfs_is_bin(sd)) - return; - - spin_lock_irq(&sysfs_open_dirent_lock); - od = sd->s_attr.open; - if (od) - atomic_inc(&od->refcnt); - spin_unlock_irq(&sysfs_open_dirent_lock); - if (!od) - return; - - mutex_lock(&sysfs_open_file_mutex); - list_for_each_entry(of, &od->files, list) { - struct inode *inode = file_inode(of->file); - unmap_mapping_range(inode->i_mapping, 0, 0, 1); + return -EINVAL; + + if (sysfs_ops->show && sysfs_ops->store) + ops = &sysfs_file_kfops_rw; + else if (sysfs_ops->show) + ops = &sysfs_file_kfops_ro; + else if (sysfs_ops->store) + ops = &sysfs_file_kfops_wo; + else + ops = &sysfs_file_kfops_empty; + + size = PAGE_SIZE; + } else { + struct bin_attribute *battr = (void *)attr; + + if (battr->mmap) + ops = &sysfs_bin_kfops_mmap; + else if (battr->read && battr->write) + ops = &sysfs_bin_kfops_rw; + else if (battr->read) + ops = &sysfs_bin_kfops_ro; + else if (battr->write) + ops = &sysfs_bin_kfops_wo; + else + ops = &sysfs_file_kfops_empty; + + size = battr->size; } - mutex_unlock(&sysfs_open_file_mutex); - - sysfs_put_open_dirent(sd, NULL); -} - -/* Sysfs attribute files are pollable. The idea is that you read - * the content and then you use 'poll' or 'select' to wait for - * the content to change. When the content changes (assuming the - * manager for the kobject supports notification), poll will - * return POLLERR|POLLPRI, and select will return the fd whether - * it is waiting for read, write, or exceptions. - * Once poll/select indicates that the value has changed, you - * need to close and re-open the file, or seek to 0 and read again. - * Reminder: this only works for attributes which actively support - * it, and it is not possible to test an attribute from userspace - * to see if it supports poll (Neither 'poll' nor 'select' return - * an appropriate error code). When in doubt, set a suitable timeout value. - */ -static unsigned int sysfs_poll(struct file *filp, poll_table *wait) -{ - struct sysfs_open_file *of = sysfs_of(filp); - struct sysfs_dirent *attr_sd = filp->f_path.dentry->d_fsdata; - struct sysfs_open_dirent *od = attr_sd->s_attr.open; - - /* need parent for the kobj, grab both */ - if (!sysfs_get_active(attr_sd)) - goto trigger; - - poll_wait(filp, &od->poll, wait); - - sysfs_put_active(attr_sd); - if (of->event != atomic_read(&od->event)) - goto trigger; - - return DEFAULT_POLLMASK; - - trigger: - return DEFAULT_POLLMASK|POLLERR|POLLPRI; -} - -void sysfs_notify_dirent(struct sysfs_dirent *sd) -{ - struct sysfs_open_dirent *od; - unsigned long flags; - - spin_lock_irqsave(&sysfs_open_dirent_lock, flags); - - if (!WARN_ON(sysfs_type(sd) != SYSFS_KOBJ_ATTR)) { - od = sd->s_attr.open; - if (od) { - atomic_inc(&od->event); - wake_up_interruptible(&od->poll); - } +#ifdef CONFIG_DEBUG_LOCK_ALLOC + if (!attr->ignore_lockdep) + key = attr->key ?: (struct lock_class_key *)&attr->skey; +#endif + kn = __kernfs_create_file(parent, attr->name, mode, size, ops, + (void *)attr, ns, true, key); + if (IS_ERR(kn)) { + if (PTR_ERR(kn) == -EEXIST) + sysfs_warn_dup(parent, attr->name); + return PTR_ERR(kn); } - - spin_unlock_irqrestore(&sysfs_open_dirent_lock, flags); -} -EXPORT_SYMBOL_GPL(sysfs_notify_dirent); - -void sysfs_notify(struct kobject *k, const char *dir, const char *attr) -{ - struct sysfs_dirent *sd = k->sd; - - mutex_lock(&sysfs_mutex); - - if (sd && dir) - sd = sysfs_find_dirent(sd, dir, NULL); - if (sd && attr) - sd = sysfs_find_dirent(sd, attr, NULL); - if (sd) - sysfs_notify_dirent(sd); - - mutex_unlock(&sysfs_mutex); -} -EXPORT_SYMBOL_GPL(sysfs_notify); - -const struct file_operations sysfs_file_operations = { - .read = seq_read, - .write = sysfs_write_file, - .llseek = generic_file_llseek, - .open = sysfs_open_file, - .release = sysfs_release, - .poll = sysfs_poll, -}; - -const struct file_operations sysfs_bin_operations = { - .read = sysfs_bin_read, - .write = sysfs_write_file, - .llseek = generic_file_llseek, - .mmap = sysfs_bin_mmap, - .open = sysfs_open_file, - .release = sysfs_release, - .poll = sysfs_poll, -}; - -int sysfs_add_file_mode_ns(struct sysfs_dirent *dir_sd, - const struct attribute *attr, int type, - umode_t amode, const void *ns) -{ - umode_t mode = (amode & S_IALLUGO) | S_IFREG; - struct sysfs_addrm_cxt acxt; - struct sysfs_dirent *sd; - int rc; - - sd = sysfs_new_dirent(attr->name, mode, type); - if (!sd) - return -ENOMEM; - - sd->s_ns = ns; - sd->s_attr.attr = (void *)attr; - sysfs_dirent_init_lockdep(sd); - - sysfs_addrm_start(&acxt); - rc = sysfs_add_one(&acxt, sd, dir_sd); - sysfs_addrm_finish(&acxt); - - if (rc) - sysfs_put(sd); - - return rc; + return 0; } - -int sysfs_add_file(struct sysfs_dirent *dir_sd, const struct attribute *attr, - int type) +int sysfs_add_file(struct kernfs_node *parent, const struct attribute *attr, + bool is_bin) { - return sysfs_add_file_mode_ns(dir_sd, attr, type, attr->mode, NULL); + return sysfs_add_file_mode_ns(parent, attr, is_bin, attr->mode, NULL); } /** @@ -877,8 +279,7 @@ int sysfs_create_file_ns(struct kobject *kobj, const struct attribute *attr, { BUG_ON(!kobj || !kobj->sd || !attr); - return sysfs_add_file_mode_ns(kobj->sd, attr, SYSFS_KOBJ_ATTR, - attr->mode, ns); + return sysfs_add_file_mode_ns(kobj->sd, attr, false, attr->mode, ns); } EXPORT_SYMBOL_GPL(sysfs_create_file_ns); @@ -906,19 +307,21 @@ EXPORT_SYMBOL_GPL(sysfs_create_files); int sysfs_add_file_to_group(struct kobject *kobj, const struct attribute *attr, const char *group) { - struct sysfs_dirent *dir_sd; + struct kernfs_node *parent; int error; - if (group) - dir_sd = sysfs_get_dirent(kobj->sd, group); - else - dir_sd = sysfs_get(kobj->sd); + if (group) { + parent = kernfs_find_and_get(kobj->sd, group); + } else { + parent = kobj->sd; + kernfs_get(parent); + } - if (!dir_sd) + if (!parent) return -ENOENT; - error = sysfs_add_file(dir_sd, attr, SYSFS_KOBJ_ATTR); - sysfs_put(dir_sd); + error = sysfs_add_file(parent, attr, false); + kernfs_put(parent); return error; } @@ -934,23 +337,20 @@ EXPORT_SYMBOL_GPL(sysfs_add_file_to_group); int sysfs_chmod_file(struct kobject *kobj, const struct attribute *attr, umode_t mode) { - struct sysfs_dirent *sd; + struct kernfs_node *kn; struct iattr newattrs; int rc; - mutex_lock(&sysfs_mutex); - - rc = -ENOENT; - sd = sysfs_find_dirent(kobj->sd, attr->name, NULL); - if (!sd) - goto out; + kn = kernfs_find_and_get(kobj->sd, attr->name); + if (!kn) + return -ENOENT; - newattrs.ia_mode = (mode & S_IALLUGO) | (sd->s_mode & ~S_IALLUGO); + newattrs.ia_mode = (mode & S_IALLUGO) | (kn->mode & ~S_IALLUGO); newattrs.ia_valid = ATTR_MODE; - rc = sysfs_sd_setattr(sd, &newattrs); - out: - mutex_unlock(&sysfs_mutex); + rc = kernfs_setattr(kn, &newattrs); + + kernfs_put(kn); return rc; } EXPORT_SYMBOL_GPL(sysfs_chmod_file); @@ -966,12 +366,35 @@ EXPORT_SYMBOL_GPL(sysfs_chmod_file); void sysfs_remove_file_ns(struct kobject *kobj, const struct attribute *attr, const void *ns) { - struct sysfs_dirent *dir_sd = kobj->sd; + struct kernfs_node *parent = kobj->sd; - sysfs_hash_and_remove(dir_sd, attr->name, ns); + kernfs_remove_by_name_ns(parent, attr->name, ns); } EXPORT_SYMBOL_GPL(sysfs_remove_file_ns); +/** + * sysfs_remove_file_self - remove an object attribute from its own method + * @kobj: object we're acting for + * @attr: attribute descriptor + * + * See kernfs_remove_self() for details. + */ +bool sysfs_remove_file_self(struct kobject *kobj, const struct attribute *attr) +{ + struct kernfs_node *parent = kobj->sd; + struct kernfs_node *kn; + bool ret; + + kn = kernfs_find_and_get(parent, attr->name); + if (WARN_ON_ONCE(!kn)) + return false; + + ret = kernfs_remove_self(kn); + + kernfs_put(kn); + return ret; +} + void sysfs_remove_files(struct kobject *kobj, const struct attribute **ptr) { int i; @@ -989,15 +412,18 @@ EXPORT_SYMBOL_GPL(sysfs_remove_files); void sysfs_remove_file_from_group(struct kobject *kobj, const struct attribute *attr, const char *group) { - struct sysfs_dirent *dir_sd; + struct kernfs_node *parent; - if (group) - dir_sd = sysfs_get_dirent(kobj->sd, group); - else - dir_sd = sysfs_get(kobj->sd); - if (dir_sd) { - sysfs_hash_and_remove(dir_sd, attr->name, NULL); - sysfs_put(dir_sd); + if (group) { + parent = kernfs_find_and_get(kobj->sd, group); + } else { + parent = kobj->sd; + kernfs_get(parent); + } + + if (parent) { + kernfs_remove_by_name(parent, attr->name); + kernfs_put(parent); } } EXPORT_SYMBOL_GPL(sysfs_remove_file_from_group); @@ -1012,7 +438,7 @@ int sysfs_create_bin_file(struct kobject *kobj, { BUG_ON(!kobj || !kobj->sd || !attr); - return sysfs_add_file(kobj->sd, &attr->attr, SYSFS_KOBJ_BIN_ATTR); + return sysfs_add_file(kobj->sd, &attr->attr, true); } EXPORT_SYMBOL_GPL(sysfs_create_bin_file); @@ -1024,7 +450,7 @@ EXPORT_SYMBOL_GPL(sysfs_create_bin_file); void sysfs_remove_bin_file(struct kobject *kobj, const struct bin_attribute *attr) { - sysfs_hash_and_remove(kobj->sd, attr->attr.name, NULL); + kernfs_remove_by_name(kobj->sd, attr->attr.name); } EXPORT_SYMBOL_GPL(sysfs_remove_bin_file); diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c index 1898a10e38ce..aa0406895b53 100644 --- a/fs/sysfs/group.c +++ b/fs/sysfs/group.c @@ -18,7 +18,7 @@ #include "sysfs.h" -static void remove_files(struct sysfs_dirent *dir_sd, struct kobject *kobj, +static void remove_files(struct kernfs_node *parent, struct kobject *kobj, const struct attribute_group *grp) { struct attribute *const *attr; @@ -26,13 +26,13 @@ static void remove_files(struct sysfs_dirent *dir_sd, struct kobject *kobj, if (grp->attrs) for (attr = grp->attrs; *attr; attr++) - sysfs_hash_and_remove(dir_sd, (*attr)->name, NULL); + kernfs_remove_by_name(parent, (*attr)->name); if (grp->bin_attrs) for (bin_attr = grp->bin_attrs; *bin_attr; bin_attr++) sysfs_remove_bin_file(kobj, *bin_attr); } -static int create_files(struct sysfs_dirent *dir_sd, struct kobject *kobj, +static int create_files(struct kernfs_node *parent, struct kobject *kobj, const struct attribute_group *grp, int update) { struct attribute *const *attr; @@ -49,22 +49,20 @@ static int create_files(struct sysfs_dirent *dir_sd, struct kobject *kobj, * re-adding (if required) the file. */ if (update) - sysfs_hash_and_remove(dir_sd, (*attr)->name, - NULL); + kernfs_remove_by_name(parent, (*attr)->name); if (grp->is_visible) { mode = grp->is_visible(kobj, *attr, i); if (!mode) continue; } - error = sysfs_add_file_mode_ns(dir_sd, *attr, - SYSFS_KOBJ_ATTR, + error = sysfs_add_file_mode_ns(parent, *attr, false, (*attr)->mode | mode, NULL); if (unlikely(error)) break; } if (error) { - remove_files(dir_sd, kobj, grp); + remove_files(parent, kobj, grp); goto exit; } } @@ -72,13 +70,16 @@ static int create_files(struct sysfs_dirent *dir_sd, struct kobject *kobj, if (grp->bin_attrs) { for (bin_attr = grp->bin_attrs; *bin_attr; bin_attr++) { if (update) - sysfs_remove_bin_file(kobj, *bin_attr); - error = sysfs_create_bin_file(kobj, *bin_attr); + kernfs_remove_by_name(parent, + (*bin_attr)->attr.name); + error = sysfs_add_file_mode_ns(parent, + &(*bin_attr)->attr, true, + (*bin_attr)->attr.mode, NULL); if (error) break; } if (error) - remove_files(dir_sd, kobj, grp); + remove_files(parent, kobj, grp); } exit: return error; @@ -88,7 +89,7 @@ exit: static int internal_create_group(struct kobject *kobj, int update, const struct attribute_group *grp) { - struct sysfs_dirent *sd; + struct kernfs_node *kn; int error; BUG_ON(!kobj || (!update && !kobj->sd)); @@ -102,18 +103,22 @@ static int internal_create_group(struct kobject *kobj, int update, return -EINVAL; } if (grp->name) { - error = sysfs_create_subdir(kobj, grp->name, &sd); - if (error) - return error; + kn = kernfs_create_dir(kobj->sd, grp->name, + S_IRWXU | S_IRUGO | S_IXUGO, kobj); + if (IS_ERR(kn)) { + if (PTR_ERR(kn) == -EEXIST) + sysfs_warn_dup(kobj->sd, grp->name); + return PTR_ERR(kn); + } } else - sd = kobj->sd; - sysfs_get(sd); - error = create_files(sd, kobj, grp, update); + kn = kobj->sd; + kernfs_get(kn); + error = create_files(kn, kobj, grp, update); if (error) { if (grp->name) - sysfs_remove(sd); + kernfs_remove(kn); } - sysfs_put(sd); + kernfs_put(kn); return error; } @@ -203,25 +208,27 @@ EXPORT_SYMBOL_GPL(sysfs_update_group); void sysfs_remove_group(struct kobject *kobj, const struct attribute_group *grp) { - struct sysfs_dirent *dir_sd = kobj->sd; - struct sysfs_dirent *sd; + struct kernfs_node *parent = kobj->sd; + struct kernfs_node *kn; if (grp->name) { - sd = sysfs_get_dirent(dir_sd, grp->name); - if (!sd) { - WARN(!sd, KERN_WARNING + kn = kernfs_find_and_get(parent, grp->name); + if (!kn) { + WARN(!kn, KERN_WARNING "sysfs group %p not found for kobject '%s'\n", grp, kobject_name(kobj)); return; } - } else - sd = sysfs_get(dir_sd); + } else { + kn = parent; + kernfs_get(kn); + } - remove_files(sd, kobj, grp); + remove_files(kn, kobj, grp); if (grp->name) - sysfs_remove(sd); + kernfs_remove(kn); - sysfs_put(sd); + kernfs_put(kn); } EXPORT_SYMBOL_GPL(sysfs_remove_group); @@ -257,22 +264,22 @@ EXPORT_SYMBOL_GPL(sysfs_remove_groups); int sysfs_merge_group(struct kobject *kobj, const struct attribute_group *grp) { - struct sysfs_dirent *dir_sd; + struct kernfs_node *parent; int error = 0; struct attribute *const *attr; int i; - dir_sd = sysfs_get_dirent(kobj->sd, grp->name); - if (!dir_sd) + parent = kernfs_find_and_get(kobj->sd, grp->name); + if (!parent) return -ENOENT; for ((i = 0, attr = grp->attrs); *attr && !error; (++i, ++attr)) - error = sysfs_add_file(dir_sd, *attr, SYSFS_KOBJ_ATTR); + error = sysfs_add_file(parent, *attr, false); if (error) { while (--i >= 0) - sysfs_hash_and_remove(dir_sd, (*--attr)->name, NULL); + kernfs_remove_by_name(parent, (*--attr)->name); } - sysfs_put(dir_sd); + kernfs_put(parent); return error; } @@ -286,14 +293,14 @@ EXPORT_SYMBOL_GPL(sysfs_merge_group); void sysfs_unmerge_group(struct kobject *kobj, const struct attribute_group *grp) { - struct sysfs_dirent *dir_sd; + struct kernfs_node *parent; struct attribute *const *attr; - dir_sd = sysfs_get_dirent(kobj->sd, grp->name); - if (dir_sd) { + parent = kernfs_find_and_get(kobj->sd, grp->name); + if (parent) { for (attr = grp->attrs; *attr; ++attr) - sysfs_hash_and_remove(dir_sd, (*attr)->name, NULL); - sysfs_put(dir_sd); + kernfs_remove_by_name(parent, (*attr)->name); + kernfs_put(parent); } } EXPORT_SYMBOL_GPL(sysfs_unmerge_group); @@ -308,15 +315,15 @@ EXPORT_SYMBOL_GPL(sysfs_unmerge_group); int sysfs_add_link_to_group(struct kobject *kobj, const char *group_name, struct kobject *target, const char *link_name) { - struct sysfs_dirent *dir_sd; + struct kernfs_node *parent; int error = 0; - dir_sd = sysfs_get_dirent(kobj->sd, group_name); - if (!dir_sd) + parent = kernfs_find_and_get(kobj->sd, group_name); + if (!parent) return -ENOENT; - error = sysfs_create_link_sd(dir_sd, target, link_name); - sysfs_put(dir_sd); + error = sysfs_create_link_sd(parent, target, link_name); + kernfs_put(parent); return error; } @@ -331,12 +338,12 @@ EXPORT_SYMBOL_GPL(sysfs_add_link_to_group); void sysfs_remove_link_from_group(struct kobject *kobj, const char *group_name, const char *link_name) { - struct sysfs_dirent *dir_sd; + struct kernfs_node *parent; - dir_sd = sysfs_get_dirent(kobj->sd, group_name); - if (dir_sd) { - sysfs_hash_and_remove(dir_sd, link_name, NULL); - sysfs_put(dir_sd); + parent = kernfs_find_and_get(kobj->sd, group_name); + if (parent) { + kernfs_remove_by_name(parent, link_name); + kernfs_put(parent); } } EXPORT_SYMBOL_GPL(sysfs_remove_link_from_group); diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c deleted file mode 100644 index 1750f790af3b..000000000000 --- a/fs/sysfs/inode.c +++ /dev/null @@ -1,331 +0,0 @@ -/* - * fs/sysfs/inode.c - basic sysfs inode and dentry operations - * - * Copyright (c) 2001-3 Patrick Mochel - * Copyright (c) 2007 SUSE Linux Products GmbH - * Copyright (c) 2007 Tejun Heo <teheo@suse.de> - * - * This file is released under the GPLv2. - * - * Please see Documentation/filesystems/sysfs.txt for more information. - */ - -#undef DEBUG - -#include <linux/pagemap.h> -#include <linux/namei.h> -#include <linux/backing-dev.h> -#include <linux/capability.h> -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/sysfs.h> -#include <linux/xattr.h> -#include <linux/security.h> -#include "sysfs.h" - -static const struct address_space_operations sysfs_aops = { - .readpage = simple_readpage, - .write_begin = simple_write_begin, - .write_end = simple_write_end, -}; - -static struct backing_dev_info sysfs_backing_dev_info = { - .name = "sysfs", - .ra_pages = 0, /* No readahead */ - .capabilities = BDI_CAP_NO_ACCT_AND_WRITEBACK, -}; - -static const struct inode_operations sysfs_inode_operations = { - .permission = sysfs_permission, - .setattr = sysfs_setattr, - .getattr = sysfs_getattr, - .setxattr = sysfs_setxattr, -}; - -int __init sysfs_inode_init(void) -{ - return bdi_init(&sysfs_backing_dev_info); -} - -static struct sysfs_inode_attrs *sysfs_init_inode_attrs(struct sysfs_dirent *sd) -{ - struct sysfs_inode_attrs *attrs; - struct iattr *iattrs; - - attrs = kzalloc(sizeof(struct sysfs_inode_attrs), GFP_KERNEL); - if (!attrs) - return NULL; - iattrs = &attrs->ia_iattr; - - /* assign default attributes */ - iattrs->ia_mode = sd->s_mode; - iattrs->ia_uid = GLOBAL_ROOT_UID; - iattrs->ia_gid = GLOBAL_ROOT_GID; - iattrs->ia_atime = iattrs->ia_mtime = iattrs->ia_ctime = CURRENT_TIME; - - return attrs; -} - -int sysfs_sd_setattr(struct sysfs_dirent *sd, struct iattr *iattr) -{ - struct sysfs_inode_attrs *sd_attrs; - struct iattr *iattrs; - unsigned int ia_valid = iattr->ia_valid; - - sd_attrs = sd->s_iattr; - - if (!sd_attrs) { - /* setting attributes for the first time, allocate now */ - sd_attrs = sysfs_init_inode_attrs(sd); - if (!sd_attrs) - return -ENOMEM; - sd->s_iattr = sd_attrs; - } - /* attributes were changed at least once in past */ - iattrs = &sd_attrs->ia_iattr; - - if (ia_valid & ATTR_UID) - iattrs->ia_uid = iattr->ia_uid; - if (ia_valid & ATTR_GID) - iattrs->ia_gid = iattr->ia_gid; - if (ia_valid & ATTR_ATIME) - iattrs->ia_atime = iattr->ia_atime; - if (ia_valid & ATTR_MTIME) - iattrs->ia_mtime = iattr->ia_mtime; - if (ia_valid & ATTR_CTIME) - iattrs->ia_ctime = iattr->ia_ctime; - if (ia_valid & ATTR_MODE) { - umode_t mode = iattr->ia_mode; - iattrs->ia_mode = sd->s_mode = mode; - } - return 0; -} - -int sysfs_setattr(struct dentry *dentry, struct iattr *iattr) -{ - struct inode *inode = dentry->d_inode; - struct sysfs_dirent *sd = dentry->d_fsdata; - int error; - - if (!sd) - return -EINVAL; - - mutex_lock(&sysfs_mutex); - error = inode_change_ok(inode, iattr); - if (error) - goto out; - - error = sysfs_sd_setattr(sd, iattr); - if (error) - goto out; - - /* this ignores size changes */ - setattr_copy(inode, iattr); - -out: - mutex_unlock(&sysfs_mutex); - return error; -} - -static int sysfs_sd_setsecdata(struct sysfs_dirent *sd, void **secdata, - u32 *secdata_len) -{ - struct sysfs_inode_attrs *iattrs; - void *old_secdata; - size_t old_secdata_len; - - if (!sd->s_iattr) { - sd->s_iattr = sysfs_init_inode_attrs(sd); - if (!sd->s_iattr) - return -ENOMEM; - } - - iattrs = sd->s_iattr; - old_secdata = iattrs->ia_secdata; - old_secdata_len = iattrs->ia_secdata_len; - - iattrs->ia_secdata = *secdata; - iattrs->ia_secdata_len = *secdata_len; - - *secdata = old_secdata; - *secdata_len = old_secdata_len; - return 0; -} - -int sysfs_setxattr(struct dentry *dentry, const char *name, const void *value, - size_t size, int flags) -{ - struct sysfs_dirent *sd = dentry->d_fsdata; - void *secdata; - int error; - u32 secdata_len = 0; - - if (!sd) - return -EINVAL; - - if (!strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN)) { - const char *suffix = name + XATTR_SECURITY_PREFIX_LEN; - error = security_inode_setsecurity(dentry->d_inode, suffix, - value, size, flags); - if (error) - goto out; - error = security_inode_getsecctx(dentry->d_inode, - &secdata, &secdata_len); - if (error) - goto out; - - mutex_lock(&sysfs_mutex); - error = sysfs_sd_setsecdata(sd, &secdata, &secdata_len); - mutex_unlock(&sysfs_mutex); - - if (secdata) - security_release_secctx(secdata, secdata_len); - } else - return -EINVAL; -out: - return error; -} - -static inline void set_default_inode_attr(struct inode *inode, umode_t mode) -{ - inode->i_mode = mode; - inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; -} - -static inline void set_inode_attr(struct inode *inode, struct iattr *iattr) -{ - inode->i_uid = iattr->ia_uid; - inode->i_gid = iattr->ia_gid; - inode->i_atime = iattr->ia_atime; - inode->i_mtime = iattr->ia_mtime; - inode->i_ctime = iattr->ia_ctime; -} - -static void sysfs_refresh_inode(struct sysfs_dirent *sd, struct inode *inode) -{ - struct sysfs_inode_attrs *iattrs = sd->s_iattr; - - inode->i_mode = sd->s_mode; - if (iattrs) { - /* sysfs_dirent has non-default attributes - * get them from persistent copy in sysfs_dirent - */ - set_inode_attr(inode, &iattrs->ia_iattr); - security_inode_notifysecctx(inode, - iattrs->ia_secdata, - iattrs->ia_secdata_len); - } - - if (sysfs_type(sd) == SYSFS_DIR) - set_nlink(inode, sd->s_dir.subdirs + 2); -} - -int sysfs_getattr(struct vfsmount *mnt, struct dentry *dentry, - struct kstat *stat) -{ - struct sysfs_dirent *sd = dentry->d_fsdata; - struct inode *inode = dentry->d_inode; - - mutex_lock(&sysfs_mutex); - sysfs_refresh_inode(sd, inode); - mutex_unlock(&sysfs_mutex); - - generic_fillattr(inode, stat); - return 0; -} - -static void sysfs_init_inode(struct sysfs_dirent *sd, struct inode *inode) -{ - struct bin_attribute *bin_attr; - - inode->i_private = sysfs_get(sd); - inode->i_mapping->a_ops = &sysfs_aops; - inode->i_mapping->backing_dev_info = &sysfs_backing_dev_info; - inode->i_op = &sysfs_inode_operations; - - set_default_inode_attr(inode, sd->s_mode); - sysfs_refresh_inode(sd, inode); - - /* initialize inode according to type */ - switch (sysfs_type(sd)) { - case SYSFS_DIR: - inode->i_op = &sysfs_dir_inode_operations; - inode->i_fop = &sysfs_dir_operations; - break; - case SYSFS_KOBJ_ATTR: - inode->i_size = PAGE_SIZE; - inode->i_fop = &sysfs_file_operations; - break; - case SYSFS_KOBJ_BIN_ATTR: - bin_attr = sd->s_attr.bin_attr; - inode->i_size = bin_attr->size; - inode->i_fop = &sysfs_bin_operations; - break; - case SYSFS_KOBJ_LINK: - inode->i_op = &sysfs_symlink_inode_operations; - break; - default: - BUG(); - } - - unlock_new_inode(inode); -} - -/** - * sysfs_get_inode - get inode for sysfs_dirent - * @sb: super block - * @sd: sysfs_dirent to allocate inode for - * - * Get inode for @sd. If such inode doesn't exist, a new inode - * is allocated and basics are initialized. New inode is - * returned locked. - * - * LOCKING: - * Kernel thread context (may sleep). - * - * RETURNS: - * Pointer to allocated inode on success, NULL on failure. - */ -struct inode *sysfs_get_inode(struct super_block *sb, struct sysfs_dirent *sd) -{ - struct inode *inode; - - inode = iget_locked(sb, sd->s_ino); - if (inode && (inode->i_state & I_NEW)) - sysfs_init_inode(sd, inode); - - return inode; -} - -/* - * The sysfs_dirent serves as both an inode and a directory entry for sysfs. - * To prevent the sysfs inode numbers from being freed prematurely we take a - * reference to sysfs_dirent from the sysfs inode. A - * super_operations.evict_inode() implementation is needed to drop that - * reference upon inode destruction. - */ -void sysfs_evict_inode(struct inode *inode) -{ - struct sysfs_dirent *sd = inode->i_private; - - truncate_inode_pages(&inode->i_data, 0); - clear_inode(inode); - sysfs_put(sd); -} - -int sysfs_permission(struct inode *inode, int mask) -{ - struct sysfs_dirent *sd; - - if (mask & MAY_NOT_BLOCK) - return -ECHILD; - - sd = inode->i_private; - - mutex_lock(&sysfs_mutex); - sysfs_refresh_inode(sd, inode); - mutex_unlock(&sysfs_mutex); - - return generic_permission(inode, mask); -} diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c index 834ec2cdb7a3..a66ad6196f59 100644 --- a/fs/sysfs/mount.c +++ b/fs/sysfs/mount.c @@ -14,146 +14,42 @@ #include <linux/fs.h> #include <linux/mount.h> -#include <linux/pagemap.h> #include <linux/init.h> -#include <linux/module.h> -#include <linux/magic.h> -#include <linux/slab.h> #include <linux/user_namespace.h> #include "sysfs.h" - -static struct vfsmount *sysfs_mnt; -struct kmem_cache *sysfs_dir_cachep; - -static const struct super_operations sysfs_ops = { - .statfs = simple_statfs, - .drop_inode = generic_delete_inode, - .evict_inode = sysfs_evict_inode, -}; - -struct sysfs_dirent sysfs_root = { - .s_name = "", - .s_count = ATOMIC_INIT(1), - .s_flags = SYSFS_DIR | (KOBJ_NS_TYPE_NONE << SYSFS_NS_TYPE_SHIFT), - .s_mode = S_IFDIR | S_IRUGO | S_IXUGO, - .s_ino = 1, -}; - -static int sysfs_fill_super(struct super_block *sb, void *data, int silent) -{ - struct inode *inode; - struct dentry *root; - - sb->s_blocksize = PAGE_CACHE_SIZE; - sb->s_blocksize_bits = PAGE_CACHE_SHIFT; - sb->s_magic = SYSFS_MAGIC; - sb->s_op = &sysfs_ops; - sb->s_time_gran = 1; - - /* get root inode, initialize and unlock it */ - mutex_lock(&sysfs_mutex); - inode = sysfs_get_inode(sb, &sysfs_root); - mutex_unlock(&sysfs_mutex); - if (!inode) { - pr_debug("sysfs: could not get root inode\n"); - return -ENOMEM; - } - - /* instantiate and link root dentry */ - root = d_make_root(inode); - if (!root) { - pr_debug("%s: could not get root dentry!\n", __func__); - return -ENOMEM; - } - root->d_fsdata = &sysfs_root; - sb->s_root = root; - sb->s_d_op = &sysfs_dentry_ops; - return 0; -} - -static int sysfs_test_super(struct super_block *sb, void *data) -{ - struct sysfs_super_info *sb_info = sysfs_info(sb); - struct sysfs_super_info *info = data; - enum kobj_ns_type type; - int found = 1; - - for (type = KOBJ_NS_TYPE_NONE; type < KOBJ_NS_TYPES; type++) { - if (sb_info->ns[type] != info->ns[type]) - found = 0; - } - return found; -} - -static int sysfs_set_super(struct super_block *sb, void *data) -{ - int error; - error = set_anon_super(sb, data); - if (!error) - sb->s_fs_info = data; - return error; -} - -static void free_sysfs_super_info(struct sysfs_super_info *info) -{ - int type; - for (type = KOBJ_NS_TYPE_NONE; type < KOBJ_NS_TYPES; type++) - kobj_ns_drop(type, info->ns[type]); - kfree(info); -} +static struct kernfs_root *sysfs_root; +struct kernfs_node *sysfs_root_kn; static struct dentry *sysfs_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) { - struct sysfs_super_info *info; - enum kobj_ns_type type; - struct super_block *sb; - int error; + struct dentry *root; + void *ns; + bool new_sb; if (!(flags & MS_KERNMOUNT)) { if (!capable(CAP_SYS_ADMIN) && !fs_fully_visible(fs_type)) return ERR_PTR(-EPERM); - for (type = KOBJ_NS_TYPE_NONE; type < KOBJ_NS_TYPES; type++) { - if (!kobj_ns_current_may_mount(type)) - return ERR_PTR(-EPERM); - } - } - - info = kzalloc(sizeof(*info), GFP_KERNEL); - if (!info) - return ERR_PTR(-ENOMEM); - - for (type = KOBJ_NS_TYPE_NONE; type < KOBJ_NS_TYPES; type++) - info->ns[type] = kobj_ns_grab_current(type); - - sb = sget(fs_type, sysfs_test_super, sysfs_set_super, flags, info); - if (IS_ERR(sb) || sb->s_fs_info != info) - free_sysfs_super_info(info); - if (IS_ERR(sb)) - return ERR_CAST(sb); - if (!sb->s_root) { - error = sysfs_fill_super(sb, data, flags & MS_SILENT ? 1 : 0); - if (error) { - deactivate_locked_super(sb); - return ERR_PTR(error); - } - sb->s_flags |= MS_ACTIVE; + if (!kobj_ns_current_may_mount(KOBJ_NS_TYPE_NET)) + return ERR_PTR(-EPERM); } - return dget(sb->s_root); + ns = kobj_ns_grab_current(KOBJ_NS_TYPE_NET); + root = kernfs_mount_ns(fs_type, flags, sysfs_root, &new_sb, ns); + if (IS_ERR(root) || !new_sb) + kobj_ns_drop(KOBJ_NS_TYPE_NET, ns); + return root; } static void sysfs_kill_sb(struct super_block *sb) { - struct sysfs_super_info *info = sysfs_info(sb); - /* Remove the superblock from fs_supers/s_instances - * so we can't find it, before freeing sysfs_super_info. - */ - kill_anon_super(sb); - free_sysfs_super_info(info); + void *ns = (void *)kernfs_super_ns(sb); + + kernfs_kill_sb(sb); + kobj_ns_drop(KOBJ_NS_TYPE_NET, ns); } static struct file_system_type sysfs_fs_type = { @@ -165,48 +61,19 @@ static struct file_system_type sysfs_fs_type = { int __init sysfs_init(void) { - int err = -ENOMEM; + int err; - sysfs_dir_cachep = kmem_cache_create("sysfs_dir_cache", - sizeof(struct sysfs_dirent), - 0, 0, NULL); - if (!sysfs_dir_cachep) - goto out; + sysfs_root = kernfs_create_root(NULL, 0, NULL); + if (IS_ERR(sysfs_root)) + return PTR_ERR(sysfs_root); - err = sysfs_inode_init(); - if (err) - goto out_err; + sysfs_root_kn = sysfs_root->kn; err = register_filesystem(&sysfs_fs_type); - if (!err) { - sysfs_mnt = kern_mount(&sysfs_fs_type); - if (IS_ERR(sysfs_mnt)) { - printk(KERN_ERR "sysfs: could not mount!\n"); - err = PTR_ERR(sysfs_mnt); - sysfs_mnt = NULL; - unregister_filesystem(&sysfs_fs_type); - goto out_err; - } - } else - goto out_err; -out: - return err; -out_err: - kmem_cache_destroy(sysfs_dir_cachep); - sysfs_dir_cachep = NULL; - goto out; -} - -#undef sysfs_get -struct sysfs_dirent *sysfs_get(struct sysfs_dirent *sd) -{ - return __sysfs_get(sd); -} -EXPORT_SYMBOL_GPL(sysfs_get); + if (err) { + kernfs_destroy_root(sysfs_root); + return err; + } -#undef sysfs_put -void sysfs_put(struct sysfs_dirent *sd) -{ - __sysfs_put(sd); + return 0; } -EXPORT_SYMBOL_GPL(sysfs_put); diff --git a/fs/sysfs/symlink.c b/fs/sysfs/symlink.c index 3ae3f1bf1a09..aecb15f84557 100644 --- a/fs/sysfs/symlink.c +++ b/fs/sysfs/symlink.c @@ -11,109 +11,73 @@ */ #include <linux/fs.h> -#include <linux/gfp.h> -#include <linux/mount.h> #include <linux/module.h> #include <linux/kobject.h> -#include <linux/namei.h> #include <linux/mutex.h> #include <linux/security.h> #include "sysfs.h" -static int sysfs_do_create_link_sd(struct sysfs_dirent *parent_sd, - struct kobject *target, +static int sysfs_do_create_link_sd(struct kernfs_node *parent, + struct kobject *target_kobj, const char *name, int warn) { - struct sysfs_dirent *target_sd = NULL; - struct sysfs_dirent *sd = NULL; - struct sysfs_addrm_cxt acxt; - enum kobj_ns_type ns_type; - int error; + struct kernfs_node *kn, *target = NULL; - BUG_ON(!name || !parent_sd); + BUG_ON(!name || !parent); /* - * We don't own @target and it may be removed at any time. + * We don't own @target_kobj and it may be removed at any time. * Synchronize using sysfs_symlink_target_lock. See * sysfs_remove_dir() for details. */ spin_lock(&sysfs_symlink_target_lock); - if (target->sd) - target_sd = sysfs_get(target->sd); + if (target_kobj->sd) { + target = target_kobj->sd; + kernfs_get(target); + } spin_unlock(&sysfs_symlink_target_lock); - error = -ENOENT; - if (!target_sd) - goto out_put; - - error = -ENOMEM; - sd = sysfs_new_dirent(name, S_IFLNK|S_IRWXUGO, SYSFS_KOBJ_LINK); - if (!sd) - goto out_put; + if (!target) + return -ENOENT; - ns_type = sysfs_ns_type(parent_sd); - if (ns_type) - sd->s_ns = target_sd->s_ns; - sd->s_symlink.target_sd = target_sd; - target_sd = NULL; /* reference is now owned by the symlink */ - - sysfs_addrm_start(&acxt); - /* Symlinks must be between directories with the same ns_type */ - if (!ns_type || - (ns_type == sysfs_ns_type(sd->s_symlink.target_sd->s_parent))) { - if (warn) - error = sysfs_add_one(&acxt, sd, parent_sd); - else - error = __sysfs_add_one(&acxt, sd, parent_sd); - } else { - error = -EINVAL; - WARN(1, KERN_WARNING - "sysfs: symlink across ns_types %s/%s -> %s/%s\n", - parent_sd->s_name, - sd->s_name, - sd->s_symlink.target_sd->s_parent->s_name, - sd->s_symlink.target_sd->s_name); - } - sysfs_addrm_finish(&acxt); + kn = kernfs_create_link(parent, name, target); + kernfs_put(target); - if (error) - goto out_put; + if (!IS_ERR(kn)) + return 0; - return 0; - - out_put: - sysfs_put(target_sd); - sysfs_put(sd); - return error; + if (warn && PTR_ERR(kn) == -EEXIST) + sysfs_warn_dup(parent, name); + return PTR_ERR(kn); } /** * sysfs_create_link_sd - create symlink to a given object. - * @sd: directory we're creating the link in. + * @kn: directory we're creating the link in. * @target: object we're pointing to. * @name: name of the symlink. */ -int sysfs_create_link_sd(struct sysfs_dirent *sd, struct kobject *target, +int sysfs_create_link_sd(struct kernfs_node *kn, struct kobject *target, const char *name) { - return sysfs_do_create_link_sd(sd, target, name, 1); + return sysfs_do_create_link_sd(kn, target, name, 1); } static int sysfs_do_create_link(struct kobject *kobj, struct kobject *target, const char *name, int warn) { - struct sysfs_dirent *parent_sd = NULL; + struct kernfs_node *parent = NULL; if (!kobj) - parent_sd = &sysfs_root; + parent = sysfs_root_kn; else - parent_sd = kobj->sd; + parent = kobj->sd; - if (!parent_sd) + if (!parent) return -EFAULT; - return sysfs_do_create_link_sd(parent_sd, target, name, warn); + return sysfs_do_create_link_sd(parent, target, name, warn); } /** @@ -164,10 +128,10 @@ void sysfs_delete_link(struct kobject *kobj, struct kobject *targ, * sysfs_remove_dir() for details. */ spin_lock(&sysfs_symlink_target_lock); - if (targ->sd && sysfs_ns_type(kobj->sd)) - ns = targ->sd->s_ns; + if (targ->sd && kernfs_ns_enabled(kobj->sd)) + ns = targ->sd->ns; spin_unlock(&sysfs_symlink_target_lock); - sysfs_hash_and_remove(kobj->sd, name, ns); + kernfs_remove_by_name_ns(kobj->sd, name, ns); } /** @@ -177,14 +141,14 @@ void sysfs_delete_link(struct kobject *kobj, struct kobject *targ, */ void sysfs_remove_link(struct kobject *kobj, const char *name) { - struct sysfs_dirent *parent_sd = NULL; + struct kernfs_node *parent = NULL; if (!kobj) - parent_sd = &sysfs_root; + parent = sysfs_root_kn; else - parent_sd = kobj->sd; + parent = kobj->sd; - sysfs_hash_and_remove(parent_sd, name, NULL); + kernfs_remove_by_name(parent, name); } EXPORT_SYMBOL_GPL(sysfs_remove_link); @@ -201,130 +165,33 @@ EXPORT_SYMBOL_GPL(sysfs_remove_link); int sysfs_rename_link_ns(struct kobject *kobj, struct kobject *targ, const char *old, const char *new, const void *new_ns) { - struct sysfs_dirent *parent_sd, *sd = NULL; + struct kernfs_node *parent, *kn = NULL; const void *old_ns = NULL; int result; if (!kobj) - parent_sd = &sysfs_root; + parent = sysfs_root_kn; else - parent_sd = kobj->sd; + parent = kobj->sd; if (targ->sd) - old_ns = targ->sd->s_ns; + old_ns = targ->sd->ns; result = -ENOENT; - sd = sysfs_get_dirent_ns(parent_sd, old, old_ns); - if (!sd) + kn = kernfs_find_and_get_ns(parent, old, old_ns); + if (!kn) goto out; result = -EINVAL; - if (sysfs_type(sd) != SYSFS_KOBJ_LINK) + if (kernfs_type(kn) != KERNFS_LINK) goto out; - if (sd->s_symlink.target_sd->s_dir.kobj != targ) + if (kn->symlink.target_kn->priv != targ) goto out; - result = sysfs_rename(sd, parent_sd, new, new_ns); + result = kernfs_rename_ns(kn, parent, new, new_ns); out: - sysfs_put(sd); + kernfs_put(kn); return result; } EXPORT_SYMBOL_GPL(sysfs_rename_link_ns); - -static int sysfs_get_target_path(struct sysfs_dirent *parent_sd, - struct sysfs_dirent *target_sd, char *path) -{ - struct sysfs_dirent *base, *sd; - char *s = path; - int len = 0; - - /* go up to the root, stop at the base */ - base = parent_sd; - while (base->s_parent) { - sd = target_sd->s_parent; - while (sd->s_parent && base != sd) - sd = sd->s_parent; - - if (base == sd) - break; - - strcpy(s, "../"); - s += 3; - base = base->s_parent; - } - - /* determine end of target string for reverse fillup */ - sd = target_sd; - while (sd->s_parent && sd != base) { - len += strlen(sd->s_name) + 1; - sd = sd->s_parent; - } - - /* check limits */ - if (len < 2) - return -EINVAL; - len--; - if ((s - path) + len > PATH_MAX) - return -ENAMETOOLONG; - - /* reverse fillup of target string from target to base */ - sd = target_sd; - while (sd->s_parent && sd != base) { - int slen = strlen(sd->s_name); - - len -= slen; - strncpy(s + len, sd->s_name, slen); - if (len) - s[--len] = '/'; - - sd = sd->s_parent; - } - - return 0; -} - -static int sysfs_getlink(struct dentry *dentry, char *path) -{ - struct sysfs_dirent *sd = dentry->d_fsdata; - struct sysfs_dirent *parent_sd = sd->s_parent; - struct sysfs_dirent *target_sd = sd->s_symlink.target_sd; - int error; - - mutex_lock(&sysfs_mutex); - error = sysfs_get_target_path(parent_sd, target_sd, path); - mutex_unlock(&sysfs_mutex); - - return error; -} - -static void *sysfs_follow_link(struct dentry *dentry, struct nameidata *nd) -{ - int error = -ENOMEM; - unsigned long page = get_zeroed_page(GFP_KERNEL); - if (page) { - error = sysfs_getlink(dentry, (char *) page); - if (error < 0) - free_page((unsigned long)page); - } - nd_set_link(nd, error ? ERR_PTR(error) : (char *)page); - return NULL; -} - -static void sysfs_put_link(struct dentry *dentry, struct nameidata *nd, - void *cookie) -{ - char *page = nd_get_link(nd); - if (!IS_ERR(page)) - free_page((unsigned long)page); -} - -const struct inode_operations sysfs_symlink_inode_operations = { - .setxattr = sysfs_setxattr, - .readlink = generic_readlink, - .follow_link = sysfs_follow_link, - .put_link = sysfs_put_link, - .setattr = sysfs_setattr, - .getattr = sysfs_getattr, - .permission = sysfs_permission, -}; diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h index 0af09fbfb3f6..0e2f1cccb812 100644 --- a/fs/sysfs/sysfs.h +++ b/fs/sysfs/sysfs.h @@ -8,248 +8,36 @@ * This file is released under the GPLv2. */ -#include <linux/lockdep.h> -#include <linux/kobject_ns.h> -#include <linux/fs.h> -#include <linux/rbtree.h> +#ifndef __SYSFS_INTERNAL_H +#define __SYSFS_INTERNAL_H -struct sysfs_open_dirent; - -/* type-specific structures for sysfs_dirent->s_* union members */ -struct sysfs_elem_dir { - struct kobject *kobj; - - unsigned long subdirs; - /* children rbtree starts here and goes through sd->s_rb */ - struct rb_root children; -}; - -struct sysfs_elem_symlink { - struct sysfs_dirent *target_sd; -}; - -struct sysfs_elem_attr { - union { - struct attribute *attr; - struct bin_attribute *bin_attr; - }; - struct sysfs_open_dirent *open; -}; - -struct sysfs_inode_attrs { - struct iattr ia_iattr; - void *ia_secdata; - u32 ia_secdata_len; -}; - -/* - * sysfs_dirent - the building block of sysfs hierarchy. Each and - * every sysfs node is represented by single sysfs_dirent. - * - * As long as s_count reference is held, the sysfs_dirent itself is - * accessible. Dereferencing s_elem or any other outer entity - * requires s_active reference. - */ -struct sysfs_dirent { - atomic_t s_count; - atomic_t s_active; -#ifdef CONFIG_DEBUG_LOCK_ALLOC - struct lockdep_map dep_map; -#endif - struct sysfs_dirent *s_parent; - const char *s_name; - - struct rb_node s_rb; - - union { - struct completion *completion; - struct sysfs_dirent *removed_list; - } u; - - const void *s_ns; /* namespace tag */ - unsigned int s_hash; /* ns + name hash */ - union { - struct sysfs_elem_dir s_dir; - struct sysfs_elem_symlink s_symlink; - struct sysfs_elem_attr s_attr; - }; - - unsigned short s_flags; - umode_t s_mode; - unsigned int s_ino; - struct sysfs_inode_attrs *s_iattr; -}; - -#define SD_DEACTIVATED_BIAS INT_MIN - -#define SYSFS_TYPE_MASK 0x00ff -#define SYSFS_DIR 0x0001 -#define SYSFS_KOBJ_ATTR 0x0002 -#define SYSFS_KOBJ_BIN_ATTR 0x0004 -#define SYSFS_KOBJ_LINK 0x0008 -#define SYSFS_COPY_NAME (SYSFS_DIR | SYSFS_KOBJ_LINK) -#define SYSFS_ACTIVE_REF (SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR) - -/* identify any namespace tag on sysfs_dirents */ -#define SYSFS_NS_TYPE_MASK 0xf00 -#define SYSFS_NS_TYPE_SHIFT 8 - -#define SYSFS_FLAG_MASK ~(SYSFS_NS_TYPE_MASK|SYSFS_TYPE_MASK) -#define SYSFS_FLAG_REMOVED 0x02000 - -static inline unsigned int sysfs_type(struct sysfs_dirent *sd) -{ - return sd->s_flags & SYSFS_TYPE_MASK; -} - -/* - * Return any namespace tags on this dirent. - * enum kobj_ns_type is defined in linux/kobject.h - */ -static inline enum kobj_ns_type sysfs_ns_type(struct sysfs_dirent *sd) -{ - return (sd->s_flags & SYSFS_NS_TYPE_MASK) >> SYSFS_NS_TYPE_SHIFT; -} - -#ifdef CONFIG_DEBUG_LOCK_ALLOC - -#define sysfs_dirent_init_lockdep(sd) \ -do { \ - struct attribute *attr = sd->s_attr.attr; \ - struct lock_class_key *key = attr->key; \ - if (!key) \ - key = &attr->skey; \ - \ - lockdep_init_map(&sd->dep_map, "s_active", key, 0); \ -} while (0) - -/* Test for attributes that want to ignore lockdep for read-locking */ -static inline bool sysfs_ignore_lockdep(struct sysfs_dirent *sd) -{ - int type = sysfs_type(sd); - - return (type == SYSFS_KOBJ_ATTR || type == SYSFS_KOBJ_BIN_ATTR) && - sd->s_attr.attr->ignore_lockdep; -} - -#else - -#define sysfs_dirent_init_lockdep(sd) do {} while (0) - -static inline bool sysfs_ignore_lockdep(struct sysfs_dirent *sd) -{ - return true; -} - -#endif - -/* - * Context structure to be used while adding/removing nodes. - */ -struct sysfs_addrm_cxt { - struct sysfs_dirent *removed; -}; +#include <linux/sysfs.h> /* * mount.c */ - -/* - * Each sb is associated with a set of namespace tags (i.e. - * the network namespace of the task which mounted this sysfs - * instance). - */ -struct sysfs_super_info { - void *ns[KOBJ_NS_TYPES]; -}; -#define sysfs_info(SB) ((struct sysfs_super_info *)(SB->s_fs_info)) -extern struct sysfs_dirent sysfs_root; -extern struct kmem_cache *sysfs_dir_cachep; +extern struct kernfs_node *sysfs_root_kn; /* * dir.c */ -extern struct mutex sysfs_mutex; extern spinlock_t sysfs_symlink_target_lock; -extern const struct dentry_operations sysfs_dentry_ops; - -extern const struct file_operations sysfs_dir_operations; -extern const struct inode_operations sysfs_dir_inode_operations; -struct sysfs_dirent *sysfs_get_active(struct sysfs_dirent *sd); -void sysfs_put_active(struct sysfs_dirent *sd); -void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt); -void sysfs_warn_dup(struct sysfs_dirent *parent, const char *name); -int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd, - struct sysfs_dirent *parent_sd); -int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd, - struct sysfs_dirent *parent_sd); -void sysfs_remove(struct sysfs_dirent *sd); -int sysfs_hash_and_remove(struct sysfs_dirent *dir_sd, const char *name, - const void *ns); -void sysfs_addrm_finish(struct sysfs_addrm_cxt *acxt); - -struct sysfs_dirent *sysfs_find_dirent(struct sysfs_dirent *parent_sd, - const unsigned char *name, - const void *ns); -struct sysfs_dirent *sysfs_new_dirent(const char *name, umode_t mode, int type); - -void release_sysfs_dirent(struct sysfs_dirent *sd); - -int sysfs_create_subdir(struct kobject *kobj, const char *name, - struct sysfs_dirent **p_sd); - -int sysfs_rename(struct sysfs_dirent *sd, struct sysfs_dirent *new_parent_sd, - const char *new_name, const void *new_ns); - -static inline struct sysfs_dirent *__sysfs_get(struct sysfs_dirent *sd) -{ - if (sd) { - WARN_ON(!atomic_read(&sd->s_count)); - atomic_inc(&sd->s_count); - } - return sd; -} -#define sysfs_get(sd) __sysfs_get(sd) - -static inline void __sysfs_put(struct sysfs_dirent *sd) -{ - if (sd && atomic_dec_and_test(&sd->s_count)) - release_sysfs_dirent(sd); -} -#define sysfs_put(sd) __sysfs_put(sd) - -/* - * inode.c - */ -struct inode *sysfs_get_inode(struct super_block *sb, struct sysfs_dirent *sd); -void sysfs_evict_inode(struct inode *inode); -int sysfs_sd_setattr(struct sysfs_dirent *sd, struct iattr *iattr); -int sysfs_permission(struct inode *inode, int mask); -int sysfs_setattr(struct dentry *dentry, struct iattr *iattr); -int sysfs_getattr(struct vfsmount *mnt, struct dentry *dentry, - struct kstat *stat); -int sysfs_setxattr(struct dentry *dentry, const char *name, const void *value, - size_t size, int flags); -int sysfs_inode_init(void); +void sysfs_warn_dup(struct kernfs_node *parent, const char *name); /* * file.c */ -extern const struct file_operations sysfs_file_operations; -extern const struct file_operations sysfs_bin_operations; - -int sysfs_add_file(struct sysfs_dirent *dir_sd, - const struct attribute *attr, int type); - -int sysfs_add_file_mode_ns(struct sysfs_dirent *dir_sd, - const struct attribute *attr, int type, +int sysfs_add_file(struct kernfs_node *parent, + const struct attribute *attr, bool is_bin); +int sysfs_add_file_mode_ns(struct kernfs_node *parent, + const struct attribute *attr, bool is_bin, umode_t amode, const void *ns); -void sysfs_unmap_bin_file(struct sysfs_dirent *sd); /* * symlink.c */ -extern const struct inode_operations sysfs_symlink_inode_operations; -int sysfs_create_link_sd(struct sysfs_dirent *sd, struct kobject *target, +int sysfs_create_link_sd(struct kernfs_node *kn, struct kobject *target, const char *name); + +#endif /* __SYSFS_INTERNAL_H */ diff --git a/fs/sysv/inode.c b/fs/sysv/inode.c index c327d4ee1235..88956309cc86 100644 --- a/fs/sysv/inode.c +++ b/fs/sysv/inode.c @@ -60,6 +60,7 @@ static int sysv_remount(struct super_block *sb, int *flags, char *data) { struct sysv_sb_info *sbi = SYSV_SB(sb); + sync_filesystem(sb); if (sbi->s_forced_ro) *flags |= MS_RDONLY; return 0; @@ -295,7 +296,7 @@ int sysv_sync_inode(struct inode *inode) static void sysv_evict_inode(struct inode *inode) { - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); if (!inode->i_nlink) { inode->i_size = 0; sysv_truncate(inode); diff --git a/fs/timerfd.c b/fs/timerfd.c index 929312180dd0..0013142c0475 100644 --- a/fs/timerfd.c +++ b/fs/timerfd.c @@ -317,6 +317,7 @@ SYSCALL_DEFINE2(timerfd_create, int, clockid, int, flags) (clockid != CLOCK_MONOTONIC && clockid != CLOCK_REALTIME && clockid != CLOCK_REALTIME_ALARM && + clockid != CLOCK_BOOTTIME && clockid != CLOCK_BOOTTIME_ALARM)) return -EINVAL; diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c index cc1febd8fadf..5157b866a853 100644 --- a/fs/ubifs/debug.c +++ b/fs/ubifs/debug.c @@ -2118,26 +2118,10 @@ out_free: */ static void free_inodes(struct fsck_data *fsckd) { - struct rb_node *this = fsckd->inodes.rb_node; - struct fsck_inode *fscki; + struct fsck_inode *fscki, *n; - while (this) { - if (this->rb_left) - this = this->rb_left; - else if (this->rb_right) - this = this->rb_right; - else { - fscki = rb_entry(this, struct fsck_inode, rb); - this = rb_parent(this); - if (this) { - if (this->rb_left == &fscki->rb) - this->rb_left = NULL; - else - this->rb_right = NULL; - } - kfree(fscki); - } - } + rbtree_postorder_for_each_entry_safe(fscki, n, &fsckd->inodes, rb) + kfree(fscki); } /** diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index 123c79b7261e..4f34dbae823d 100644 --- a/fs/ubifs/file.c +++ b/fs/ubifs/file.c @@ -1538,6 +1538,7 @@ out_unlock: static const struct vm_operations_struct ubifs_file_vm_ops = { .fault = filemap_fault, + .map_pages = filemap_map_pages, .page_mkwrite = ubifs_vm_page_mkwrite, .remap_pages = generic_file_remap_pages, }; diff --git a/fs/ubifs/log.c b/fs/ubifs/log.c index 36bd4efd0819..a902c5919e42 100644 --- a/fs/ubifs/log.c +++ b/fs/ubifs/log.c @@ -574,27 +574,10 @@ static int done_already(struct rb_root *done_tree, int lnum) */ static void destroy_done_tree(struct rb_root *done_tree) { - struct rb_node *this = done_tree->rb_node; - struct done_ref *dr; + struct done_ref *dr, *n; - while (this) { - if (this->rb_left) { - this = this->rb_left; - continue; - } else if (this->rb_right) { - this = this->rb_right; - continue; - } - dr = rb_entry(this, struct done_ref, rb); - this = rb_parent(this); - if (this) { - if (this->rb_left == &dr->rb) - this->rb_left = NULL; - else - this->rb_right = NULL; - } + rbtree_postorder_for_each_entry_safe(dr, n, done_tree, rb) kfree(dr); - } } /** diff --git a/fs/ubifs/orphan.c b/fs/ubifs/orphan.c index ba32da3fe08a..f1c3e5a1b315 100644 --- a/fs/ubifs/orphan.c +++ b/fs/ubifs/orphan.c @@ -815,27 +815,10 @@ static int dbg_find_check_orphan(struct rb_root *root, ino_t inum) static void dbg_free_check_tree(struct rb_root *root) { - struct rb_node *this = root->rb_node; - struct check_orphan *o; + struct check_orphan *o, *n; - while (this) { - if (this->rb_left) { - this = this->rb_left; - continue; - } else if (this->rb_right) { - this = this->rb_right; - continue; - } - o = rb_entry(this, struct check_orphan, rb); - this = rb_parent(this); - if (this) { - if (this->rb_left == &o->rb) - this->rb_left = NULL; - else - this->rb_right = NULL; - } + rbtree_postorder_for_each_entry_safe(o, n, root, rb) kfree(o); - } } static int dbg_orphan_check(struct ubifs_info *c, struct ubifs_zbranch *zbr, diff --git a/fs/ubifs/recovery.c b/fs/ubifs/recovery.c index 065096e36ed9..c14adb2f420c 100644 --- a/fs/ubifs/recovery.c +++ b/fs/ubifs/recovery.c @@ -1335,29 +1335,14 @@ static void remove_ino(struct ubifs_info *c, ino_t inum) */ void ubifs_destroy_size_tree(struct ubifs_info *c) { - struct rb_node *this = c->size_tree.rb_node; - struct size_entry *e; + struct size_entry *e, *n; - while (this) { - if (this->rb_left) { - this = this->rb_left; - continue; - } else if (this->rb_right) { - this = this->rb_right; - continue; - } - e = rb_entry(this, struct size_entry, rb); + rbtree_postorder_for_each_entry_safe(e, n, &c->size_tree, rb) { if (e->inode) iput(e->inode); - this = rb_parent(this); - if (this) { - if (this->rb_left == &e->rb) - this->rb_left = NULL; - else - this->rb_right = NULL; - } kfree(e); } + c->size_tree = RB_ROOT; } diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index f69daa514a57..a1266089eca1 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -351,7 +351,7 @@ static void ubifs_evict_inode(struct inode *inode) dbg_gen("inode %lu, mode %#x", inode->i_ino, (int)inode->i_mode); ubifs_assert(!atomic_read(&inode->i_count)); - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); if (inode->i_nlink) goto done; @@ -873,26 +873,10 @@ static void free_orphans(struct ubifs_info *c) */ static void free_buds(struct ubifs_info *c) { - struct rb_node *this = c->buds.rb_node; - struct ubifs_bud *bud; - - while (this) { - if (this->rb_left) - this = this->rb_left; - else if (this->rb_right) - this = this->rb_right; - else { - bud = rb_entry(this, struct ubifs_bud, rb); - this = rb_parent(this); - if (this) { - if (this->rb_left == &bud->rb) - this->rb_left = NULL; - else - this->rb_right = NULL; - } - kfree(bud); - } - } + struct ubifs_bud *bud, *n; + + rbtree_postorder_for_each_entry_safe(bud, n, &c->buds, rb) + kfree(bud); } /** @@ -1843,6 +1827,7 @@ static int ubifs_remount_fs(struct super_block *sb, int *flags, char *data) int err; struct ubifs_info *c = sb->s_fs_info; + sync_filesystem(sb); dbg_gen("old flags %#lx, new flags %#x", sb->s_flags, *flags); err = ubifs_parse_options(c, data, 1); diff --git a/fs/ubifs/tnc.c b/fs/ubifs/tnc.c index 349f31a30f40..9083bc7ed4ae 100644 --- a/fs/ubifs/tnc.c +++ b/fs/ubifs/tnc.c @@ -178,27 +178,11 @@ static int ins_clr_old_idx_znode(struct ubifs_info *c, */ void destroy_old_idx(struct ubifs_info *c) { - struct rb_node *this = c->old_idx.rb_node; - struct ubifs_old_idx *old_idx; + struct ubifs_old_idx *old_idx, *n; - while (this) { - if (this->rb_left) { - this = this->rb_left; - continue; - } else if (this->rb_right) { - this = this->rb_right; - continue; - } - old_idx = rb_entry(this, struct ubifs_old_idx, rb); - this = rb_parent(this); - if (this) { - if (this->rb_left == &old_idx->rb) - this->rb_left = NULL; - else - this->rb_right = NULL; - } + rbtree_postorder_for_each_entry_safe(old_idx, n, &c->old_idx, rb) kfree(old_idx); - } + c->old_idx = RB_ROOT; } diff --git a/fs/udf/file.c b/fs/udf/file.c index c02a27a19c6d..1037637957c7 100644 --- a/fs/udf/file.c +++ b/fs/udf/file.c @@ -144,6 +144,7 @@ static ssize_t udf_file_aio_write(struct kiocb *iocb, const struct iovec *iov, size_t count = iocb->ki_nbytes; struct udf_inode_info *iinfo = UDF_I(inode); + mutex_lock(&inode->i_mutex); down_write(&iinfo->i_data_sem); if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) { if (file->f_flags & O_APPEND) @@ -156,6 +157,7 @@ static ssize_t udf_file_aio_write(struct kiocb *iocb, const struct iovec *iov, pos + count)) { err = udf_expand_file_adinicb(inode); if (err) { + mutex_unlock(&inode->i_mutex); udf_debug("udf_expand_adinicb: err=%d\n", err); return err; } @@ -169,9 +171,17 @@ static ssize_t udf_file_aio_write(struct kiocb *iocb, const struct iovec *iov, } else up_write(&iinfo->i_data_sem); - retval = generic_file_aio_write(iocb, iov, nr_segs, ppos); - if (retval > 0) + retval = __generic_file_aio_write(iocb, iov, nr_segs, &iocb->ki_pos); + mutex_unlock(&inode->i_mutex); + + if (retval > 0) { + ssize_t err; + mark_inode_dirty(inode); + err = generic_write_sync(file, iocb->ki_pos - retval, retval); + if (err < 0) + retval = err; + } return retval; } diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 062b7925bca0..5d643706212f 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -146,8 +146,8 @@ void udf_evict_inode(struct inode *inode) want_delete = 1; udf_setsize(inode, 0); udf_update_inode(inode, IS_SYNC(inode)); - } else - truncate_inode_pages(&inode->i_data, 0); + } + truncate_inode_pages_final(&inode->i_data); invalidate_inode_buffers(inode); clear_inode(inode); if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB && @@ -265,6 +265,7 @@ int udf_expand_file_adinicb(struct inode *inode) .nr_to_write = 1, }; + WARN_ON_ONCE(!mutex_is_locked(&inode->i_mutex)); if (!iinfo->i_lenAlloc) { if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD)) iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT; diff --git a/fs/udf/namei.c b/fs/udf/namei.c index 5f6fc17d6bc5..9737cba1357d 100644 --- a/fs/udf/namei.c +++ b/fs/udf/namei.c @@ -1010,6 +1010,7 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry, else udf_truncate_tail_extent(inode); mark_inode_dirty(inode); + up_write(&iinfo->i_data_sem); fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err); if (!fi) @@ -1023,7 +1024,6 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry, udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL); if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) mark_inode_dirty(dir); - up_write(&iinfo->i_data_sem); if (fibh.sbh != fibh.ebh) brelse(fibh.ebh); brelse(fibh.sbh); diff --git a/fs/udf/super.c b/fs/udf/super.c index 3306b9f69bed..3286db047a40 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -175,7 +175,7 @@ static void init_once(void *foo) inode_init_once(&ei->vfs_inode); } -static int init_inodecache(void) +static int __init init_inodecache(void) { udf_inode_cachep = kmem_cache_create("udf_inode_cache", sizeof(struct udf_inode_info), @@ -505,6 +505,7 @@ static int udf_parse_options(char *options, struct udf_options *uopt, while ((p = strsep(&options, ",")) != NULL) { substring_t args[MAX_OPT_ARGS]; int token; + unsigned n; if (!*p) continue; @@ -516,7 +517,10 @@ static int udf_parse_options(char *options, struct udf_options *uopt, case Opt_bs: if (match_int(&args[0], &option)) return 0; - uopt->blocksize = option; + n = option; + if (n != 512 && n != 1024 && n != 2048 && n != 4096) + return 0; + uopt->blocksize = n; uopt->flags |= (1 << UDF_FLAG_BLOCKSIZE_SET); break; case Opt_unhide: @@ -646,6 +650,7 @@ static int udf_remount_fs(struct super_block *sb, int *flags, char *options) int error = 0; struct logicalVolIntegrityDescImpUse *lvidiu = udf_sb_lvidiu(sb); + sync_filesystem(sb); if (lvidiu) { int write_rev = le16_to_cpu(lvidiu->minUDFWriteRev); if (write_rev > UDF_MAX_WRITE_VERSION && !(*flags & MS_RDONLY)) diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c index a7ea492ae660..0ab1de4b39a5 100644 --- a/fs/ufs/balloc.c +++ b/fs/ufs/balloc.c @@ -38,7 +38,6 @@ void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count) { struct super_block * sb; struct ufs_sb_private_info * uspi; - struct ufs_super_block_first * usb1; struct ufs_cg_private_info * ucpi; struct ufs_cylinder_group * ucg; unsigned cgno, bit, end_bit, bbase, blkmap, i; @@ -46,7 +45,6 @@ void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count) sb = inode->i_sb; uspi = UFS_SB(sb)->s_uspi; - usb1 = ubh_get_usb_first(uspi); UFSD("ENTER, fragment %llu, count %u\n", (unsigned long long)fragment, count); @@ -135,7 +133,6 @@ void ufs_free_blocks(struct inode *inode, u64 fragment, unsigned count) { struct super_block * sb; struct ufs_sb_private_info * uspi; - struct ufs_super_block_first * usb1; struct ufs_cg_private_info * ucpi; struct ufs_cylinder_group * ucg; unsigned overflow, cgno, bit, end_bit, i; @@ -143,7 +140,6 @@ void ufs_free_blocks(struct inode *inode, u64 fragment, unsigned count) sb = inode->i_sb; uspi = UFS_SB(sb)->s_uspi; - usb1 = ubh_get_usb_first(uspi); UFSD("ENTER, fragment %llu, count %u\n", (unsigned long long)fragment, count); @@ -499,7 +495,6 @@ static u64 ufs_add_fragments(struct inode *inode, u64 fragment, { struct super_block * sb; struct ufs_sb_private_info * uspi; - struct ufs_super_block_first * usb1; struct ufs_cg_private_info * ucpi; struct ufs_cylinder_group * ucg; unsigned cgno, fragno, fragoff, count, fragsize, i; @@ -509,7 +504,6 @@ static u64 ufs_add_fragments(struct inode *inode, u64 fragment, sb = inode->i_sb; uspi = UFS_SB(sb)->s_uspi; - usb1 = ubh_get_usb_first (uspi); count = newcount - oldcount; cgno = ufs_dtog(uspi, fragment); @@ -577,7 +571,6 @@ static u64 ufs_alloc_fragments(struct inode *inode, unsigned cgno, { struct super_block * sb; struct ufs_sb_private_info * uspi; - struct ufs_super_block_first * usb1; struct ufs_cg_private_info * ucpi; struct ufs_cylinder_group * ucg; unsigned oldcg, i, j, k, allocsize; @@ -588,7 +581,6 @@ static u64 ufs_alloc_fragments(struct inode *inode, unsigned cgno, sb = inode->i_sb; uspi = UFS_SB(sb)->s_uspi; - usb1 = ubh_get_usb_first(uspi); oldcg = cgno; /* @@ -690,7 +682,6 @@ static u64 ufs_alloccg_block(struct inode *inode, { struct super_block * sb; struct ufs_sb_private_info * uspi; - struct ufs_super_block_first * usb1; struct ufs_cylinder_group * ucg; u64 result, blkno; @@ -698,7 +689,6 @@ static u64 ufs_alloccg_block(struct inode *inode, sb = inode->i_sb; uspi = UFS_SB(sb)->s_uspi; - usb1 = ubh_get_usb_first(uspi); ucg = ubh_get_ucg(UCPI_UBH(ucpi)); if (goal == 0) { @@ -794,7 +784,6 @@ static u64 ufs_bitmap_search(struct super_block *sb, 0x0, 0x2, 0x6, 0xe, 0x1e, 0x3e, 0x7e, 0xfe, 0x1fe }; struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; - struct ufs_super_block_first *usb1; struct ufs_cylinder_group *ucg; unsigned start, length, loc; unsigned pos, want, blockmap, mask, end; @@ -803,7 +792,6 @@ static u64 ufs_bitmap_search(struct super_block *sb, UFSD("ENTER, cg %u, goal %llu, count %u\n", ucpi->c_cgx, (unsigned long long)goal, count); - usb1 = ubh_get_usb_first (uspi); ucg = ubh_get_ucg(UCPI_UBH(ucpi)); if (goal) diff --git a/fs/ufs/ialloc.c b/fs/ufs/ialloc.c index d0426d74817b..98f7211599ff 100644 --- a/fs/ufs/ialloc.c +++ b/fs/ufs/ialloc.c @@ -57,7 +57,6 @@ void ufs_free_inode (struct inode * inode) { struct super_block * sb; struct ufs_sb_private_info * uspi; - struct ufs_super_block_first * usb1; struct ufs_cg_private_info * ucpi; struct ufs_cylinder_group * ucg; int is_directory; @@ -67,7 +66,6 @@ void ufs_free_inode (struct inode * inode) sb = inode->i_sb; uspi = UFS_SB(sb)->s_uspi; - usb1 = ubh_get_usb_first(uspi); ino = inode->i_ino; @@ -175,7 +173,6 @@ struct inode *ufs_new_inode(struct inode *dir, umode_t mode) struct super_block * sb; struct ufs_sb_info * sbi; struct ufs_sb_private_info * uspi; - struct ufs_super_block_first * usb1; struct ufs_cg_private_info * ucpi; struct ufs_cylinder_group * ucg; struct inode * inode; @@ -195,7 +192,6 @@ struct inode *ufs_new_inode(struct inode *dir, umode_t mode) ufsi = UFS_I(inode); sbi = UFS_SB(sb); uspi = sbi->s_uspi; - usb1 = ubh_get_usb_first(uspi); mutex_lock(&sbi->s_lock); diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c index c8ca96086784..61e8a9b021dd 100644 --- a/fs/ufs/inode.c +++ b/fs/ufs/inode.c @@ -885,7 +885,7 @@ void ufs_evict_inode(struct inode * inode) if (!inode->i_nlink && !is_bad_inode(inode)) want_delete = 1; - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); if (want_delete) { loff_t old_i_size; /*UFS_I(inode)->i_dtime = CURRENT_TIME;*/ diff --git a/fs/ufs/super.c b/fs/ufs/super.c index 329f2f53b7ed..c1183f9f69dc 100644 --- a/fs/ufs/super.c +++ b/fs/ufs/super.c @@ -524,11 +524,9 @@ static int ufs_read_cylinder_structures(struct super_block *sb) struct ufs_buffer_head * ubh; unsigned char * base, * space; unsigned size, blks, i; - struct ufs_super_block_third *usb3; UFSD("ENTER\n"); - usb3 = ubh_get_usb_third(uspi); /* * Read cs structures from (usually) first data block * on the device. @@ -1280,6 +1278,7 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) unsigned new_mount_opt, ufstype; unsigned flags; + sync_filesystem(sb); lock_ufs(sb); mutex_lock(&UFS_SB(sb)->s_lock); uspi = UFS_SB(sb)->s_uspi; @@ -1389,15 +1388,11 @@ static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf) struct super_block *sb = dentry->d_sb; struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi; unsigned flags = UFS_SB(sb)->s_flags; - struct ufs_super_block_first *usb1; - struct ufs_super_block_second *usb2; struct ufs_super_block_third *usb3; u64 id = huge_encode_dev(sb->s_bdev->bd_dev); lock_ufs(sb); - usb1 = ubh_get_usb_first(uspi); - usb2 = ubh_get_usb_second(uspi); usb3 = ubh_get_usb_third(uspi); if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { @@ -1453,7 +1448,7 @@ static void init_once(void *foo) inode_init_once(&ei->vfs_inode); } -static int init_inodecache(void) +static int __init init_inodecache(void) { ufs_inode_cachep = kmem_cache_create("ufs_inode_cache", sizeof(struct ufs_inode_info), diff --git a/fs/xattr_acl.c b/fs/xattr_acl.c deleted file mode 100644 index 9fbea87fdb6e..000000000000 --- a/fs/xattr_acl.c +++ /dev/null @@ -1,180 +0,0 @@ -/* - * linux/fs/xattr_acl.c - * - * Almost all from linux/fs/ext2/acl.c: - * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org> - */ - -#include <linux/export.h> -#include <linux/fs.h> -#include <linux/posix_acl_xattr.h> -#include <linux/gfp.h> -#include <linux/user_namespace.h> - -/* - * Fix up the uids and gids in posix acl extended attributes in place. - */ -static void posix_acl_fix_xattr_userns( - struct user_namespace *to, struct user_namespace *from, - void *value, size_t size) -{ - posix_acl_xattr_header *header = (posix_acl_xattr_header *)value; - posix_acl_xattr_entry *entry = (posix_acl_xattr_entry *)(header+1), *end; - int count; - kuid_t uid; - kgid_t gid; - - if (!value) - return; - if (size < sizeof(posix_acl_xattr_header)) - return; - if (header->a_version != cpu_to_le32(POSIX_ACL_XATTR_VERSION)) - return; - - count = posix_acl_xattr_count(size); - if (count < 0) - return; - if (count == 0) - return; - - for (end = entry + count; entry != end; entry++) { - switch(le16_to_cpu(entry->e_tag)) { - case ACL_USER: - uid = make_kuid(from, le32_to_cpu(entry->e_id)); - entry->e_id = cpu_to_le32(from_kuid(to, uid)); - break; - case ACL_GROUP: - gid = make_kgid(from, le32_to_cpu(entry->e_id)); - entry->e_id = cpu_to_le32(from_kgid(to, gid)); - break; - default: - break; - } - } -} - -void posix_acl_fix_xattr_from_user(void *value, size_t size) -{ - struct user_namespace *user_ns = current_user_ns(); - if (user_ns == &init_user_ns) - return; - posix_acl_fix_xattr_userns(&init_user_ns, user_ns, value, size); -} - -void posix_acl_fix_xattr_to_user(void *value, size_t size) -{ - struct user_namespace *user_ns = current_user_ns(); - if (user_ns == &init_user_ns) - return; - posix_acl_fix_xattr_userns(user_ns, &init_user_ns, value, size); -} - -/* - * Convert from extended attribute to in-memory representation. - */ -struct posix_acl * -posix_acl_from_xattr(struct user_namespace *user_ns, - const void *value, size_t size) -{ - posix_acl_xattr_header *header = (posix_acl_xattr_header *)value; - posix_acl_xattr_entry *entry = (posix_acl_xattr_entry *)(header+1), *end; - int count; - struct posix_acl *acl; - struct posix_acl_entry *acl_e; - - if (!value) - return NULL; - if (size < sizeof(posix_acl_xattr_header)) - return ERR_PTR(-EINVAL); - if (header->a_version != cpu_to_le32(POSIX_ACL_XATTR_VERSION)) - return ERR_PTR(-EOPNOTSUPP); - - count = posix_acl_xattr_count(size); - if (count < 0) - return ERR_PTR(-EINVAL); - if (count == 0) - return NULL; - - acl = posix_acl_alloc(count, GFP_NOFS); - if (!acl) - return ERR_PTR(-ENOMEM); - acl_e = acl->a_entries; - - for (end = entry + count; entry != end; acl_e++, entry++) { - acl_e->e_tag = le16_to_cpu(entry->e_tag); - acl_e->e_perm = le16_to_cpu(entry->e_perm); - - switch(acl_e->e_tag) { - case ACL_USER_OBJ: - case ACL_GROUP_OBJ: - case ACL_MASK: - case ACL_OTHER: - break; - - case ACL_USER: - acl_e->e_uid = - make_kuid(user_ns, - le32_to_cpu(entry->e_id)); - if (!uid_valid(acl_e->e_uid)) - goto fail; - break; - case ACL_GROUP: - acl_e->e_gid = - make_kgid(user_ns, - le32_to_cpu(entry->e_id)); - if (!gid_valid(acl_e->e_gid)) - goto fail; - break; - - default: - goto fail; - } - } - return acl; - -fail: - posix_acl_release(acl); - return ERR_PTR(-EINVAL); -} -EXPORT_SYMBOL (posix_acl_from_xattr); - -/* - * Convert from in-memory to extended attribute representation. - */ -int -posix_acl_to_xattr(struct user_namespace *user_ns, const struct posix_acl *acl, - void *buffer, size_t size) -{ - posix_acl_xattr_header *ext_acl = (posix_acl_xattr_header *)buffer; - posix_acl_xattr_entry *ext_entry = ext_acl->a_entries; - int real_size, n; - - real_size = posix_acl_xattr_size(acl->a_count); - if (!buffer) - return real_size; - if (real_size > size) - return -ERANGE; - - ext_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); - - for (n=0; n < acl->a_count; n++, ext_entry++) { - const struct posix_acl_entry *acl_e = &acl->a_entries[n]; - ext_entry->e_tag = cpu_to_le16(acl_e->e_tag); - ext_entry->e_perm = cpu_to_le16(acl_e->e_perm); - switch(acl_e->e_tag) { - case ACL_USER: - ext_entry->e_id = - cpu_to_le32(from_kuid(user_ns, acl_e->e_uid)); - break; - case ACL_GROUP: - ext_entry->e_id = - cpu_to_le32(from_kgid(user_ns, acl_e->e_gid)); - break; - default: - ext_entry->e_id = cpu_to_le32(ACL_UNDEFINED_ID); - break; - } - } - return real_size; -} -EXPORT_SYMBOL (posix_acl_to_xattr); diff --git a/fs/xfs/kmem.c b/fs/xfs/kmem.c index 66a36befc5c0..844e288b9576 100644 --- a/fs/xfs/kmem.c +++ b/fs/xfs/kmem.c @@ -65,12 +65,31 @@ kmem_alloc(size_t size, xfs_km_flags_t flags) void * kmem_zalloc_large(size_t size, xfs_km_flags_t flags) { + unsigned noio_flag = 0; void *ptr; + gfp_t lflags; ptr = kmem_zalloc(size, flags | KM_MAYFAIL); if (ptr) return ptr; - return vzalloc(size); + + /* + * __vmalloc() will allocate data pages and auxillary structures (e.g. + * pagetables) with GFP_KERNEL, yet we may be under GFP_NOFS context + * here. Hence we need to tell memory reclaim that we are in such a + * context via PF_MEMALLOC_NOIO to prevent memory reclaim re-entering + * the filesystem here and potentially deadlocking. + */ + if ((current->flags & PF_FSTRANS) || (flags & KM_NOFS)) + noio_flag = memalloc_noio_save(); + + lflags = kmem_flags_convert(flags); + ptr = __vmalloc(size, lflags | __GFP_HIGHMEM | __GFP_ZERO, PAGE_KERNEL); + + if ((current->flags & PF_FSTRANS) || (flags & KM_NOFS)) + memalloc_noio_restore(noio_flag); + + return ptr; } void diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c index 370eb3e121d1..6888ad886ff6 100644 --- a/fs/xfs/xfs_acl.c +++ b/fs/xfs/xfs_acl.c @@ -124,16 +124,12 @@ struct posix_acl * xfs_get_acl(struct inode *inode, int type) { struct xfs_inode *ip = XFS_I(inode); - struct posix_acl *acl; + struct posix_acl *acl = NULL; struct xfs_acl *xfs_acl; unsigned char *ea_name; int error; int len; - acl = get_cached_acl(inode, type); - if (acl != ACL_NOT_CACHED) - return acl; - trace_xfs_get_acl(ip); switch (type) { @@ -164,10 +160,8 @@ xfs_get_acl(struct inode *inode, int type) * cache entry, for any other error assume it is transient and * leave the cache entry as ACL_NOT_CACHED. */ - if (error == -ENOATTR) { - acl = NULL; + if (error == -ENOATTR) goto out_update_cache; - } goto out; } @@ -183,15 +177,12 @@ out: } STATIC int -xfs_set_acl(struct inode *inode, int type, struct posix_acl *acl) +__xfs_set_acl(struct inode *inode, int type, struct posix_acl *acl) { struct xfs_inode *ip = XFS_I(inode); unsigned char *ea_name; int error; - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - switch (type) { case ACL_TYPE_ACCESS: ea_name = SGI_ACL_FILE; @@ -282,131 +273,23 @@ posix_acl_default_exists(struct inode *inode) return xfs_acl_exists(inode, SGI_ACL_DEFAULT); } -/* - * No need for i_mutex because the inode is not yet exposed to the VFS. - */ int -xfs_inherit_acl(struct inode *inode, struct posix_acl *acl) +xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type) { - umode_t mode = inode->i_mode; - int error = 0, inherit = 0; - - if (S_ISDIR(inode->i_mode)) { - error = xfs_set_acl(inode, ACL_TYPE_DEFAULT, acl); - if (error) - goto out; - } - - error = posix_acl_create(&acl, GFP_KERNEL, &mode); - if (error < 0) - return error; - - /* - * If posix_acl_create returns a positive value we need to - * inherit a permission that can't be represented using the Unix - * mode bits and we actually need to set an ACL. - */ - if (error > 0) - inherit = 1; - - error = xfs_set_mode(inode, mode); - if (error) - goto out; - - if (inherit) - error = xfs_set_acl(inode, ACL_TYPE_ACCESS, acl); - -out: - posix_acl_release(acl); - return error; -} - -int -xfs_acl_chmod(struct inode *inode) -{ - struct posix_acl *acl; - int error; - - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - - acl = xfs_get_acl(inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl) || !acl) - return PTR_ERR(acl); - - error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); - if (error) - return error; - - error = xfs_set_acl(inode, ACL_TYPE_ACCESS, acl); - posix_acl_release(acl); - return error; -} - -static int -xfs_xattr_acl_get(struct dentry *dentry, const char *name, - void *value, size_t size, int type) -{ - struct posix_acl *acl; - int error; - - acl = xfs_get_acl(dentry->d_inode, type); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl == NULL) - return -ENODATA; - - error = posix_acl_to_xattr(&init_user_ns, acl, value, size); - posix_acl_release(acl); - - return error; -} - -static int -xfs_xattr_acl_set(struct dentry *dentry, const char *name, - const void *value, size_t size, int flags, int type) -{ - struct inode *inode = dentry->d_inode; - struct posix_acl *acl = NULL; int error = 0; - if (flags & XATTR_CREATE) - return -EINVAL; - if (type == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode)) - return value ? -EACCES : 0; - if (!inode_owner_or_capable(inode)) - return -EPERM; - - if (!value) + if (!acl) goto set_acl; - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (!acl) { - /* - * acl_set_file(3) may request that we set default ACLs with - * zero length -- defend (gracefully) against that here. - */ - goto out; - } - if (IS_ERR(acl)) { - error = PTR_ERR(acl); - goto out; - } - - error = posix_acl_valid(acl); - if (error) - goto out_release; - - error = -EINVAL; + error = -E2BIG; if (acl->a_count > XFS_ACL_MAX_ENTRIES(XFS_M(inode->i_sb))) - goto out_release; + return error; if (type == ACL_TYPE_ACCESS) { umode_t mode = inode->i_mode; error = posix_acl_equiv_mode(acl, &mode); if (error <= 0) { - posix_acl_release(acl); acl = NULL; if (error < 0) @@ -415,27 +298,9 @@ xfs_xattr_acl_set(struct dentry *dentry, const char *name, error = xfs_set_mode(inode, mode); if (error) - goto out_release; + return error; } set_acl: - error = xfs_set_acl(inode, type, acl); - out_release: - posix_acl_release(acl); - out: - return error; + return __xfs_set_acl(inode, type, acl); } - -const struct xattr_handler xfs_xattr_acl_access_handler = { - .prefix = POSIX_ACL_XATTR_ACCESS, - .flags = ACL_TYPE_ACCESS, - .get = xfs_xattr_acl_get, - .set = xfs_xattr_acl_set, -}; - -const struct xattr_handler xfs_xattr_acl_default_handler = { - .prefix = POSIX_ACL_XATTR_DEFAULT, - .flags = ACL_TYPE_DEFAULT, - .get = xfs_xattr_acl_get, - .set = xfs_xattr_acl_set, -}; diff --git a/fs/xfs/xfs_acl.h b/fs/xfs/xfs_acl.h index 4016a567b83c..5dc163744511 100644 --- a/fs/xfs/xfs_acl.h +++ b/fs/xfs/xfs_acl.h @@ -60,20 +60,15 @@ struct xfs_acl { #ifdef CONFIG_XFS_POSIX_ACL extern struct posix_acl *xfs_get_acl(struct inode *inode, int type); -extern int xfs_inherit_acl(struct inode *inode, struct posix_acl *default_acl); -extern int xfs_acl_chmod(struct inode *inode); +extern int xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); extern int posix_acl_access_exists(struct inode *inode); extern int posix_acl_default_exists(struct inode *inode); - -extern const struct xattr_handler xfs_xattr_acl_access_handler; -extern const struct xattr_handler xfs_xattr_acl_default_handler; #else static inline struct posix_acl *xfs_get_acl(struct inode *inode, int type) { return NULL; } -# define xfs_inherit_acl(inode, default_acl) 0 -# define xfs_acl_chmod(inode) 0 +# define xfs_set_acl NULL # define posix_acl_access_exists(inode) 0 # define posix_acl_default_exists(inode) 0 #endif /* CONFIG_XFS_POSIX_ACL */ diff --git a/fs/xfs/xfs_ag.h b/fs/xfs/xfs_ag.h index 3fc109819c34..0fdd4109c624 100644 --- a/fs/xfs/xfs_ag.h +++ b/fs/xfs/xfs_ag.h @@ -89,6 +89,8 @@ typedef struct xfs_agf { /* structure must be padded to 64 bit alignment */ } xfs_agf_t; +#define XFS_AGF_CRC_OFF offsetof(struct xfs_agf, agf_crc) + #define XFS_AGF_MAGICNUM 0x00000001 #define XFS_AGF_VERSIONNUM 0x00000002 #define XFS_AGF_SEQNO 0x00000004 @@ -167,6 +169,8 @@ typedef struct xfs_agi { /* structure must be padded to 64 bit alignment */ } xfs_agi_t; +#define XFS_AGI_CRC_OFF offsetof(struct xfs_agi, agi_crc) + #define XFS_AGI_MAGICNUM 0x00000001 #define XFS_AGI_VERSIONNUM 0x00000002 #define XFS_AGI_SEQNO 0x00000004 @@ -222,6 +226,8 @@ typedef struct xfs_agfl { __be32 agfl_bno[]; /* actually XFS_AGFL_SIZE(mp) */ } xfs_agfl_t; +#define XFS_AGFL_CRC_OFF offsetof(struct xfs_agfl, agfl_crc) + /* * tags for inode radix tree */ diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c index 9eab2dfdcbb5..c1cf6a336a72 100644 --- a/fs/xfs/xfs_alloc.c +++ b/fs/xfs/xfs_alloc.c @@ -474,7 +474,6 @@ xfs_agfl_read_verify( struct xfs_buf *bp) { struct xfs_mount *mp = bp->b_target->bt_mount; - int agfl_ok = 1; /* * There is no verification of non-crc AGFLs because mkfs does not @@ -485,15 +484,13 @@ xfs_agfl_read_verify( if (!xfs_sb_version_hascrc(&mp->m_sb)) return; - agfl_ok = xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - offsetof(struct xfs_agfl, agfl_crc)); - - agfl_ok = agfl_ok && xfs_agfl_verify(bp); - - if (!agfl_ok) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); + if (!xfs_buf_verify_cksum(bp, XFS_AGFL_CRC_OFF)) + xfs_buf_ioerror(bp, EFSBADCRC); + else if (!xfs_agfl_verify(bp)) xfs_buf_ioerror(bp, EFSCORRUPTED); - } + + if (bp->b_error) + xfs_verifier_error(bp); } static void @@ -508,16 +505,15 @@ xfs_agfl_write_verify( return; if (!xfs_agfl_verify(bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_verifier_error(bp); return; } if (bip) XFS_BUF_TO_AGFL(bp)->agfl_lsn = cpu_to_be64(bip->bli_item.li_lsn); - xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), - offsetof(struct xfs_agfl, agfl_crc)); + xfs_buf_update_cksum(bp, XFS_AGFL_CRC_OFF); } const struct xfs_buf_ops xfs_agfl_buf_ops = { @@ -2238,19 +2234,17 @@ xfs_agf_read_verify( struct xfs_buf *bp) { struct xfs_mount *mp = bp->b_target->bt_mount; - int agf_ok = 1; - - if (xfs_sb_version_hascrc(&mp->m_sb)) - agf_ok = xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - offsetof(struct xfs_agf, agf_crc)); - agf_ok = agf_ok && xfs_agf_verify(mp, bp); - - if (unlikely(XFS_TEST_ERROR(!agf_ok, mp, XFS_ERRTAG_ALLOC_READ_AGF, - XFS_RANDOM_ALLOC_READ_AGF))) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); + if (xfs_sb_version_hascrc(&mp->m_sb) && + !xfs_buf_verify_cksum(bp, XFS_AGF_CRC_OFF)) + xfs_buf_ioerror(bp, EFSBADCRC); + else if (XFS_TEST_ERROR(!xfs_agf_verify(mp, bp), mp, + XFS_ERRTAG_ALLOC_READ_AGF, + XFS_RANDOM_ALLOC_READ_AGF)) xfs_buf_ioerror(bp, EFSCORRUPTED); - } + + if (bp->b_error) + xfs_verifier_error(bp); } static void @@ -2261,8 +2255,8 @@ xfs_agf_write_verify( struct xfs_buf_log_item *bip = bp->b_fspriv; if (!xfs_agf_verify(mp, bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_verifier_error(bp); return; } @@ -2272,8 +2266,7 @@ xfs_agf_write_verify( if (bip) XFS_BUF_TO_AGF(bp)->agf_lsn = cpu_to_be64(bip->bli_item.li_lsn); - xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), - offsetof(struct xfs_agf, agf_crc)); + xfs_buf_update_cksum(bp, XFS_AGF_CRC_OFF); } const struct xfs_buf_ops xfs_agf_buf_ops = { diff --git a/fs/xfs/xfs_alloc_btree.c b/fs/xfs/xfs_alloc_btree.c index 13085429e523..cc1eadcbb049 100644 --- a/fs/xfs/xfs_alloc_btree.c +++ b/fs/xfs/xfs_alloc_btree.c @@ -355,12 +355,14 @@ static void xfs_allocbt_read_verify( struct xfs_buf *bp) { - if (!(xfs_btree_sblock_verify_crc(bp) && - xfs_allocbt_verify(bp))) { - trace_xfs_btree_corrupt(bp, _RET_IP_); - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, - bp->b_target->bt_mount, bp->b_addr); + if (!xfs_btree_sblock_verify_crc(bp)) + xfs_buf_ioerror(bp, EFSBADCRC); + else if (!xfs_allocbt_verify(bp)) xfs_buf_ioerror(bp, EFSCORRUPTED); + + if (bp->b_error) { + trace_xfs_btree_corrupt(bp, _RET_IP_); + xfs_verifier_error(bp); } } @@ -370,9 +372,9 @@ xfs_allocbt_write_verify( { if (!xfs_allocbt_verify(bp)) { trace_xfs_btree_corrupt(bp, _RET_IP_); - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, - bp->b_target->bt_mount, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_verifier_error(bp); + return; } xfs_btree_sblock_calc_crc(bp); diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 71c8c9d2b882..75df77d09f75 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -407,7 +407,7 @@ xfs_alloc_ioend_bio( struct bio *bio = bio_alloc(GFP_NOIO, nvecs); ASSERT(bio->bi_private == NULL); - bio->bi_sector = bh->b_blocknr * (bh->b_size >> 9); + bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9); bio->bi_bdev = bh->b_bdev; return bio; } @@ -632,38 +632,46 @@ xfs_map_at_offset( } /* - * Test if a given page is suitable for writing as part of an unwritten - * or delayed allocate extent. + * Test if a given page contains at least one buffer of a given @type. + * If @check_all_buffers is true, then we walk all the buffers in the page to + * try to find one of the type passed in. If it is not set, then the caller only + * needs to check the first buffer on the page for a match. */ -STATIC int +STATIC bool xfs_check_page_type( struct page *page, - unsigned int type) + unsigned int type, + bool check_all_buffers) { - if (PageWriteback(page)) - return 0; + struct buffer_head *bh; + struct buffer_head *head; - if (page->mapping && page_has_buffers(page)) { - struct buffer_head *bh, *head; - int acceptable = 0; + if (PageWriteback(page)) + return false; + if (!page->mapping) + return false; + if (!page_has_buffers(page)) + return false; - bh = head = page_buffers(page); - do { - if (buffer_unwritten(bh)) - acceptable += (type == XFS_IO_UNWRITTEN); - else if (buffer_delay(bh)) - acceptable += (type == XFS_IO_DELALLOC); - else if (buffer_dirty(bh) && buffer_mapped(bh)) - acceptable += (type == XFS_IO_OVERWRITE); - else - break; - } while ((bh = bh->b_this_page) != head); + bh = head = page_buffers(page); + do { + if (buffer_unwritten(bh)) { + if (type == XFS_IO_UNWRITTEN) + return true; + } else if (buffer_delay(bh)) { + if (type == XFS_IO_DELALLOC) + return true; + } else if (buffer_dirty(bh) && buffer_mapped(bh)) { + if (type == XFS_IO_OVERWRITE) + return true; + } - if (acceptable) - return 1; - } + /* If we are only checking the first buffer, we are done now. */ + if (!check_all_buffers) + break; + } while ((bh = bh->b_this_page) != head); - return 0; + return false; } /* @@ -697,7 +705,7 @@ xfs_convert_page( goto fail_unlock_page; if (page->mapping != inode->i_mapping) goto fail_unlock_page; - if (!xfs_check_page_type(page, (*ioendp)->io_type)) + if (!xfs_check_page_type(page, (*ioendp)->io_type, false)) goto fail_unlock_page; /* @@ -742,6 +750,15 @@ xfs_convert_page( p_offset = p_offset ? roundup(p_offset, len) : PAGE_CACHE_SIZE; page_dirty = p_offset / len; + /* + * The moment we find a buffer that doesn't match our current type + * specification or can't be written, abort the loop and start + * writeback. As per the above xfs_imap_valid() check, only + * xfs_vm_writepage() can handle partial page writeback fully - we are + * limited here to the buffers that are contiguous with the current + * ioend, and hence a buffer we can't write breaks that contiguity and + * we have to defer the rest of the IO to xfs_vm_writepage(). + */ bh = head = page_buffers(page); do { if (offset >= end_offset) @@ -750,7 +767,7 @@ xfs_convert_page( uptodate = 0; if (!(PageUptodate(page) || buffer_uptodate(bh))) { done = 1; - continue; + break; } if (buffer_unwritten(bh) || buffer_delay(bh) || @@ -762,10 +779,11 @@ xfs_convert_page( else type = XFS_IO_OVERWRITE; - if (!xfs_imap_valid(inode, imap, offset)) { - done = 1; - continue; - } + /* + * imap should always be valid because of the above + * partial page end_offset check on the imap. + */ + ASSERT(xfs_imap_valid(inode, imap, offset)); lock_buffer(bh); if (type != XFS_IO_OVERWRITE) @@ -777,6 +795,7 @@ xfs_convert_page( count++; } else { done = 1; + break; } } while (offset += len, (bh = bh->b_this_page) != head); @@ -868,7 +887,7 @@ xfs_aops_discard_page( struct buffer_head *bh, *head; loff_t offset = page_offset(page); - if (!xfs_check_page_type(page, XFS_IO_DELALLOC)) + if (!xfs_check_page_type(page, XFS_IO_DELALLOC, true)) goto out_invalidate; if (XFS_FORCED_SHUTDOWN(ip->i_mount)) @@ -1217,7 +1236,7 @@ __xfs_get_blocks( lockmode = XFS_ILOCK_EXCL; xfs_ilock(ip, lockmode); } else { - lockmode = xfs_ilock_map_shared(ip); + lockmode = xfs_ilock_data_map_shared(ip); } ASSERT(offset <= mp->m_super->s_maxbytes); @@ -1441,7 +1460,8 @@ xfs_vm_direct_IO( ret = __blockdev_direct_IO(rw, iocb, inode, bdev, iov, offset, nr_segs, xfs_get_blocks_direct, - xfs_end_io_direct_write, NULL, 0); + xfs_end_io_direct_write, NULL, + DIO_ASYNC_EXTEND); if (ret != -EIOCBQUEUED && iocb->private) goto out_destroy_ioend; } else { diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c index b86127072ac3..01b6a0102fbd 100644 --- a/fs/xfs/xfs_attr.c +++ b/fs/xfs/xfs_attr.c @@ -164,6 +164,7 @@ xfs_attr_get( { int error; struct xfs_name xname; + uint lock_mode; XFS_STATS_INC(xs_attr_get); @@ -174,9 +175,9 @@ xfs_attr_get( if (error) return error; - xfs_ilock(ip, XFS_ILOCK_SHARED); + lock_mode = xfs_ilock_attr_map_shared(ip); error = xfs_attr_get_int(ip, &xname, value, valuelenp, flags); - xfs_iunlock(ip, XFS_ILOCK_SHARED); + xfs_iunlock(ip, lock_mode); return(error); } diff --git a/fs/xfs/xfs_attr_leaf.c b/fs/xfs/xfs_attr_leaf.c index 7b126f46a2f9..fe9587fab17a 100644 --- a/fs/xfs/xfs_attr_leaf.c +++ b/fs/xfs/xfs_attr_leaf.c @@ -213,8 +213,8 @@ xfs_attr3_leaf_write_verify( struct xfs_attr3_leaf_hdr *hdr3 = bp->b_addr; if (!xfs_attr3_leaf_verify(bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_verifier_error(bp); return; } @@ -224,7 +224,7 @@ xfs_attr3_leaf_write_verify( if (bip) hdr3->info.lsn = cpu_to_be64(bip->bli_item.li_lsn); - xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_ATTR3_LEAF_CRC_OFF); + xfs_buf_update_cksum(bp, XFS_ATTR3_LEAF_CRC_OFF); } /* @@ -239,13 +239,14 @@ xfs_attr3_leaf_read_verify( { struct xfs_mount *mp = bp->b_target->bt_mount; - if ((xfs_sb_version_hascrc(&mp->m_sb) && - !xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_ATTR3_LEAF_CRC_OFF)) || - !xfs_attr3_leaf_verify(bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); + if (xfs_sb_version_hascrc(&mp->m_sb) && + !xfs_buf_verify_cksum(bp, XFS_ATTR3_LEAF_CRC_OFF)) + xfs_buf_ioerror(bp, EFSBADCRC); + else if (!xfs_attr3_leaf_verify(bp)) xfs_buf_ioerror(bp, EFSCORRUPTED); - } + + if (bp->b_error) + xfs_verifier_error(bp); } const struct xfs_buf_ops xfs_attr3_leaf_buf_ops = { diff --git a/fs/xfs/xfs_attr_list.c b/fs/xfs/xfs_attr_list.c index 2d174b128153..01db96f60cf0 100644 --- a/fs/xfs/xfs_attr_list.c +++ b/fs/xfs/xfs_attr_list.c @@ -507,17 +507,17 @@ xfs_attr_list_int( { int error; xfs_inode_t *dp = context->dp; + uint lock_mode; XFS_STATS_INC(xs_attr_list); if (XFS_FORCED_SHUTDOWN(dp->i_mount)) return EIO; - xfs_ilock(dp, XFS_ILOCK_SHARED); - /* * Decide on what work routines to call based on the inode size. */ + lock_mode = xfs_ilock_attr_map_shared(dp); if (!xfs_inode_hasattr(dp)) { error = 0; } else if (dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) { @@ -527,9 +527,7 @@ xfs_attr_list_int( } else { error = xfs_attr_node_list(context); } - - xfs_iunlock(dp, XFS_ILOCK_SHARED); - + xfs_iunlock(dp, lock_mode); return error; } diff --git a/fs/xfs/xfs_attr_remote.c b/fs/xfs/xfs_attr_remote.c index 5549d69ddb45..6e37823e2932 100644 --- a/fs/xfs/xfs_attr_remote.c +++ b/fs/xfs/xfs_attr_remote.c @@ -125,7 +125,6 @@ xfs_attr3_rmt_read_verify( struct xfs_mount *mp = bp->b_target->bt_mount; char *ptr; int len; - bool corrupt = false; xfs_daddr_t bno; /* no verification of non-crc buffers */ @@ -140,11 +139,11 @@ xfs_attr3_rmt_read_verify( while (len > 0) { if (!xfs_verify_cksum(ptr, XFS_LBSIZE(mp), XFS_ATTR3_RMT_CRC_OFF)) { - corrupt = true; + xfs_buf_ioerror(bp, EFSBADCRC); break; } if (!xfs_attr3_rmt_verify(mp, ptr, XFS_LBSIZE(mp), bno)) { - corrupt = true; + xfs_buf_ioerror(bp, EFSCORRUPTED); break; } len -= XFS_LBSIZE(mp); @@ -152,10 +151,9 @@ xfs_attr3_rmt_read_verify( bno += mp->m_bsize; } - if (corrupt) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); - xfs_buf_ioerror(bp, EFSCORRUPTED); - } else + if (bp->b_error) + xfs_verifier_error(bp); + else ASSERT(len == 0); } @@ -180,9 +178,8 @@ xfs_attr3_rmt_write_verify( while (len > 0) { if (!xfs_attr3_rmt_verify(mp, ptr, XFS_LBSIZE(mp), bno)) { - XFS_CORRUPTION_ERROR(__func__, - XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_verifier_error(bp); return; } if (bip) { diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c index 3b2c14b6f0fb..5b6092ef51ef 100644 --- a/fs/xfs/xfs_bmap.c +++ b/fs/xfs/xfs_bmap.c @@ -4013,6 +4013,7 @@ xfs_bmapi_read( ASSERT(*nmap >= 1); ASSERT(!(flags & ~(XFS_BMAPI_ATTRFORK|XFS_BMAPI_ENTIRE| XFS_BMAPI_IGSTATE))); + ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED|XFS_ILOCK_EXCL)); if (unlikely(XFS_TEST_ERROR( (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && @@ -4207,6 +4208,7 @@ xfs_bmapi_delay( ASSERT(*nmap >= 1); ASSERT(*nmap <= XFS_BMAP_MAX_NMAP); ASSERT(!(flags & ~XFS_BMAPI_ENTIRE)); + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); if (unlikely(XFS_TEST_ERROR( (XFS_IFORK_FORMAT(ip, XFS_DATA_FORK) != XFS_DINODE_FMT_EXTENTS && @@ -4500,6 +4502,7 @@ xfs_bmapi_write( ASSERT(tp != NULL); ASSERT(len > 0); ASSERT(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_LOCAL); + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); if (unlikely(XFS_TEST_ERROR( (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && @@ -5051,6 +5054,7 @@ xfs_bunmapi( if (XFS_FORCED_SHUTDOWN(mp)) return XFS_ERROR(EIO); + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); ASSERT(len > 0); ASSERT(nexts >= 0); @@ -5374,3 +5378,196 @@ error0: } return error; } + +/* + * Shift extent records to the left to cover a hole. + * + * The maximum number of extents to be shifted in a single operation + * is @num_exts, and @current_ext keeps track of the current extent + * index we have shifted. @offset_shift_fsb is the length by which each + * extent is shifted. If there is no hole to shift the extents + * into, this will be considered invalid operation and we abort immediately. + */ +int +xfs_bmap_shift_extents( + struct xfs_trans *tp, + struct xfs_inode *ip, + int *done, + xfs_fileoff_t start_fsb, + xfs_fileoff_t offset_shift_fsb, + xfs_extnum_t *current_ext, + xfs_fsblock_t *firstblock, + struct xfs_bmap_free *flist, + int num_exts) +{ + struct xfs_btree_cur *cur; + struct xfs_bmbt_rec_host *gotp; + struct xfs_bmbt_irec got; + struct xfs_bmbt_irec left; + struct xfs_mount *mp = ip->i_mount; + struct xfs_ifork *ifp; + xfs_extnum_t nexts = 0; + xfs_fileoff_t startoff; + int error = 0; + int i; + int whichfork = XFS_DATA_FORK; + int logflags; + xfs_filblks_t blockcount = 0; + + if (unlikely(XFS_TEST_ERROR( + (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && + XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), + mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) { + XFS_ERROR_REPORT("xfs_bmap_shift_extents", + XFS_ERRLEVEL_LOW, mp); + return XFS_ERROR(EFSCORRUPTED); + } + + if (XFS_FORCED_SHUTDOWN(mp)) + return XFS_ERROR(EIO); + + ASSERT(current_ext != NULL); + + ifp = XFS_IFORK_PTR(ip, whichfork); + + if (!(ifp->if_flags & XFS_IFEXTENTS)) { + /* Read in all the extents */ + error = xfs_iread_extents(tp, ip, whichfork); + if (error) + return error; + } + + /* + * If *current_ext is 0, we would need to lookup the extent + * from where we would start shifting and store it in gotp. + */ + if (!*current_ext) { + gotp = xfs_iext_bno_to_ext(ifp, start_fsb, current_ext); + /* + * gotp can be null in 2 cases: 1) if there are no extents + * or 2) start_fsb lies in a hole beyond which there are + * no extents. Either way, we are done. + */ + if (!gotp) { + *done = 1; + return 0; + } + } + + /* We are going to change core inode */ + logflags = XFS_ILOG_CORE; + + if (ifp->if_flags & XFS_IFBROOT) { + cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); + cur->bc_private.b.firstblock = *firstblock; + cur->bc_private.b.flist = flist; + cur->bc_private.b.flags = 0; + } else { + cur = NULL; + logflags |= XFS_ILOG_DEXT; + } + + while (nexts++ < num_exts && + *current_ext < XFS_IFORK_NEXTENTS(ip, whichfork)) { + + gotp = xfs_iext_get_ext(ifp, *current_ext); + xfs_bmbt_get_all(gotp, &got); + startoff = got.br_startoff - offset_shift_fsb; + + /* + * Before shifting extent into hole, make sure that the hole + * is large enough to accomodate the shift. + */ + if (*current_ext) { + xfs_bmbt_get_all(xfs_iext_get_ext(ifp, + *current_ext - 1), &left); + + if (startoff < left.br_startoff + left.br_blockcount) + error = XFS_ERROR(EINVAL); + } else if (offset_shift_fsb > got.br_startoff) { + /* + * When first extent is shifted, offset_shift_fsb + * should be less than the stating offset of + * the first extent. + */ + error = XFS_ERROR(EINVAL); + } + + if (error) + goto del_cursor; + + if (cur) { + error = xfs_bmbt_lookup_eq(cur, got.br_startoff, + got.br_startblock, + got.br_blockcount, + &i); + if (error) + goto del_cursor; + XFS_WANT_CORRUPTED_GOTO(i == 1, del_cursor); + } + + /* Check if we can merge 2 adjacent extents */ + if (*current_ext && + left.br_startoff + left.br_blockcount == startoff && + left.br_startblock + left.br_blockcount == + got.br_startblock && + left.br_state == got.br_state && + left.br_blockcount + got.br_blockcount <= MAXEXTLEN) { + blockcount = left.br_blockcount + + got.br_blockcount; + xfs_iext_remove(ip, *current_ext, 1, 0); + if (cur) { + error = xfs_btree_delete(cur, &i); + if (error) + goto del_cursor; + XFS_WANT_CORRUPTED_GOTO(i == 1, del_cursor); + } + XFS_IFORK_NEXT_SET(ip, whichfork, + XFS_IFORK_NEXTENTS(ip, whichfork) - 1); + gotp = xfs_iext_get_ext(ifp, --*current_ext); + xfs_bmbt_get_all(gotp, &got); + + /* Make cursor point to the extent we will update */ + if (cur) { + error = xfs_bmbt_lookup_eq(cur, got.br_startoff, + got.br_startblock, + got.br_blockcount, + &i); + if (error) + goto del_cursor; + XFS_WANT_CORRUPTED_GOTO(i == 1, del_cursor); + } + + xfs_bmbt_set_blockcount(gotp, blockcount); + got.br_blockcount = blockcount; + } else { + /* We have to update the startoff */ + xfs_bmbt_set_startoff(gotp, startoff); + got.br_startoff = startoff; + } + + if (cur) { + error = xfs_bmbt_update(cur, got.br_startoff, + got.br_startblock, + got.br_blockcount, + got.br_state); + if (error) + goto del_cursor; + } + + (*current_ext)++; + } + + /* Check if we are done */ + if (*current_ext == XFS_IFORK_NEXTENTS(ip, whichfork)) + *done = 1; + +del_cursor: + if (cur) + xfs_btree_del_cursor(cur, + error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); + + xfs_trans_log_inode(tp, ip, logflags); + + return error; +} diff --git a/fs/xfs/xfs_bmap.h b/fs/xfs/xfs_bmap.h index 33b41f351225..f84bd7af43be 100644 --- a/fs/xfs/xfs_bmap.h +++ b/fs/xfs/xfs_bmap.h @@ -127,6 +127,16 @@ static inline void xfs_bmap_init(xfs_bmap_free_t *flp, xfs_fsblock_t *fbp) { BMAP_RIGHT_FILLING, "RF" }, \ { BMAP_ATTRFORK, "ATTR" } + +/* + * This macro is used to determine how many extents will be shifted + * in one write transaction. We could require two splits, + * an extent move on the first and an extent merge on the second, + * So it is proper that one extent is shifted inside write transaction + * at a time. + */ +#define XFS_BMAP_MAX_SHIFT_EXTENTS 1 + #ifdef DEBUG void xfs_bmap_trace_exlist(struct xfs_inode *ip, xfs_extnum_t cnt, int whichfork, unsigned long caller_ip); @@ -169,5 +179,10 @@ int xfs_bunmapi(struct xfs_trans *tp, struct xfs_inode *ip, int xfs_check_nostate_extents(struct xfs_ifork *ifp, xfs_extnum_t idx, xfs_extnum_t num); uint xfs_default_attroffset(struct xfs_inode *ip); +int xfs_bmap_shift_extents(struct xfs_trans *tp, struct xfs_inode *ip, + int *done, xfs_fileoff_t start_fsb, + xfs_fileoff_t offset_shift_fsb, xfs_extnum_t *current_ext, + xfs_fsblock_t *firstblock, struct xfs_bmap_free *flist, + int num_exts); #endif /* __XFS_BMAP_H__ */ diff --git a/fs/xfs/xfs_bmap_btree.c b/fs/xfs/xfs_bmap_btree.c index 706bc3f777cb..818d546664e7 100644 --- a/fs/xfs/xfs_bmap_btree.c +++ b/fs/xfs/xfs_bmap_btree.c @@ -780,12 +780,14 @@ static void xfs_bmbt_read_verify( struct xfs_buf *bp) { - if (!(xfs_btree_lblock_verify_crc(bp) && - xfs_bmbt_verify(bp))) { - trace_xfs_btree_corrupt(bp, _RET_IP_); - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, - bp->b_target->bt_mount, bp->b_addr); + if (!xfs_btree_lblock_verify_crc(bp)) + xfs_buf_ioerror(bp, EFSBADCRC); + else if (!xfs_bmbt_verify(bp)) xfs_buf_ioerror(bp, EFSCORRUPTED); + + if (bp->b_error) { + trace_xfs_btree_corrupt(bp, _RET_IP_); + xfs_verifier_error(bp); } } @@ -794,11 +796,9 @@ xfs_bmbt_write_verify( struct xfs_buf *bp) { if (!xfs_bmbt_verify(bp)) { - xfs_warn(bp->b_target->bt_mount, "bmbt daddr 0x%llx failed", bp->b_bn); trace_xfs_btree_corrupt(bp, _RET_IP_); - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, - bp->b_target->bt_mount, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_verifier_error(bp); return; } xfs_btree_lblock_calc_crc(bp); diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index 82e0dab46ee5..01f6a646caa1 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -618,22 +618,27 @@ xfs_getbmap( return XFS_ERROR(ENOMEM); xfs_ilock(ip, XFS_IOLOCK_SHARED); - if (whichfork == XFS_DATA_FORK && !(iflags & BMV_IF_DELALLOC)) { - if (ip->i_delayed_blks || XFS_ISIZE(ip) > ip->i_d.di_size) { + if (whichfork == XFS_DATA_FORK) { + if (!(iflags & BMV_IF_DELALLOC) && + (ip->i_delayed_blks || XFS_ISIZE(ip) > ip->i_d.di_size)) { error = -filemap_write_and_wait(VFS_I(ip)->i_mapping); if (error) goto out_unlock_iolock; + + /* + * Even after flushing the inode, there can still be + * delalloc blocks on the inode beyond EOF due to + * speculative preallocation. These are not removed + * until the release function is called or the inode + * is inactivated. Hence we cannot assert here that + * ip->i_delayed_blks == 0. + */ } - /* - * even after flushing the inode, there can still be delalloc - * blocks on the inode beyond EOF due to speculative - * preallocation. These are not removed until the release - * function is called or the inode is inactivated. Hence we - * cannot assert here that ip->i_delayed_blks == 0. - */ - } - lock = xfs_ilock_map_shared(ip); + lock = xfs_ilock_data_map_shared(ip); + } else { + lock = xfs_ilock_attr_map_shared(ip); + } /* * Don't let nex be bigger than the number of extents @@ -738,7 +743,7 @@ xfs_getbmap( out_free_map: kmem_free(map); out_unlock_ilock: - xfs_iunlock_map_shared(ip, lock); + xfs_iunlock(ip, lock); out_unlock_iolock: xfs_iunlock(ip, XFS_IOLOCK_SHARED); @@ -1169,9 +1174,15 @@ xfs_zero_remaining_bytes( xfs_buf_unlock(bp); for (offset = startoff; offset <= endoff; offset = lastoffset + 1) { + uint lock_mode; + offset_fsb = XFS_B_TO_FSBT(mp, offset); nimap = 1; + + lock_mode = xfs_ilock_data_map_shared(ip); error = xfs_bmapi_read(ip, offset_fsb, 1, &imap, &nimap, 0); + xfs_iunlock(ip, lock_mode); + if (error || nimap < 1) break; ASSERT(imap.br_blockcount >= 1); @@ -1338,7 +1349,6 @@ xfs_free_file_space( * the freeing of the space succeeds at ENOSPC. */ tp = xfs_trans_alloc(mp, XFS_TRANS_DIOSTRAT); - tp->t_flags |= XFS_TRANS_RESERVE; error = xfs_trans_reserve(tp, &M_RES(mp)->tr_write, resblks, 0); /* @@ -1457,6 +1467,102 @@ out: } /* + * xfs_collapse_file_space() + * This routine frees disk space and shift extent for the given file. + * The first thing we do is to free data blocks in the specified range + * by calling xfs_free_file_space(). It would also sync dirty data + * and invalidate page cache over the region on which collapse range + * is working. And Shift extent records to the left to cover a hole. + * RETURNS: + * 0 on success + * errno on error + * + */ +int +xfs_collapse_file_space( + struct xfs_inode *ip, + xfs_off_t offset, + xfs_off_t len) +{ + int done = 0; + struct xfs_mount *mp = ip->i_mount; + struct xfs_trans *tp; + int error; + xfs_extnum_t current_ext = 0; + struct xfs_bmap_free free_list; + xfs_fsblock_t first_block; + int committed; + xfs_fileoff_t start_fsb; + xfs_fileoff_t shift_fsb; + + ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL)); + + trace_xfs_collapse_file_space(ip); + + start_fsb = XFS_B_TO_FSB(mp, offset + len); + shift_fsb = XFS_B_TO_FSB(mp, len); + + error = xfs_free_file_space(ip, offset, len); + if (error) + return error; + + while (!error && !done) { + tp = xfs_trans_alloc(mp, XFS_TRANS_DIOSTRAT); + tp->t_flags |= XFS_TRANS_RESERVE; + /* + * We would need to reserve permanent block for transaction. + * This will come into picture when after shifting extent into + * hole we found that adjacent extents can be merged which + * may lead to freeing of a block during record update. + */ + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_write, + XFS_DIOSTRAT_SPACE_RES(mp, 0), 0); + if (error) { + ASSERT(error == ENOSPC || XFS_FORCED_SHUTDOWN(mp)); + xfs_trans_cancel(tp, 0); + break; + } + + xfs_ilock(ip, XFS_ILOCK_EXCL); + error = xfs_trans_reserve_quota(tp, mp, ip->i_udquot, + ip->i_gdquot, ip->i_pdquot, + XFS_DIOSTRAT_SPACE_RES(mp, 0), 0, + XFS_QMOPT_RES_REGBLKS); + if (error) + goto out; + + xfs_trans_ijoin(tp, ip, 0); + + xfs_bmap_init(&free_list, &first_block); + + /* + * We are using the write transaction in which max 2 bmbt + * updates are allowed + */ + error = xfs_bmap_shift_extents(tp, ip, &done, start_fsb, + shift_fsb, ¤t_ext, + &first_block, &free_list, + XFS_BMAP_MAX_SHIFT_EXTENTS); + if (error) + goto out; + + error = xfs_bmap_finish(&tp, &free_list, &committed); + if (error) + goto out; + + error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); + xfs_iunlock(ip, XFS_ILOCK_EXCL); + } + + return error; + +out: + xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT); + xfs_iunlock(ip, XFS_ILOCK_EXCL); + return error; +} + +/* * We need to check that the format of the data fork in the temporary inode is * valid for the target inode before doing the swap. This is not a problem with * attr1 because of the fixed fork offset, but attr2 has a dynamically sized diff --git a/fs/xfs/xfs_bmap_util.h b/fs/xfs/xfs_bmap_util.h index 900747b25772..935ed2b24edf 100644 --- a/fs/xfs/xfs_bmap_util.h +++ b/fs/xfs/xfs_bmap_util.h @@ -99,6 +99,8 @@ int xfs_free_file_space(struct xfs_inode *ip, xfs_off_t offset, xfs_off_t len); int xfs_zero_file_space(struct xfs_inode *ip, xfs_off_t offset, xfs_off_t len); +int xfs_collapse_file_space(struct xfs_inode *, xfs_off_t offset, + xfs_off_t len); /* EOF block manipulation functions */ bool xfs_can_free_eofblocks(struct xfs_inode *ip, bool force); diff --git a/fs/xfs/xfs_btree.c b/fs/xfs/xfs_btree.c index 9adaae4f3e2f..e80d59fdf89a 100644 --- a/fs/xfs/xfs_btree.c +++ b/fs/xfs/xfs_btree.c @@ -234,8 +234,7 @@ xfs_btree_lblock_calc_crc( return; if (bip) block->bb_u.l.bb_lsn = cpu_to_be64(bip->bli_item.li_lsn); - xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_BTREE_LBLOCK_CRC_OFF); + xfs_buf_update_cksum(bp, XFS_BTREE_LBLOCK_CRC_OFF); } bool @@ -243,8 +242,8 @@ xfs_btree_lblock_verify_crc( struct xfs_buf *bp) { if (xfs_sb_version_hascrc(&bp->b_target->bt_mount->m_sb)) - return xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_BTREE_LBLOCK_CRC_OFF); + return xfs_buf_verify_cksum(bp, XFS_BTREE_LBLOCK_CRC_OFF); + return true; } @@ -267,8 +266,7 @@ xfs_btree_sblock_calc_crc( return; if (bip) block->bb_u.s.bb_lsn = cpu_to_be64(bip->bli_item.li_lsn); - xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_BTREE_SBLOCK_CRC_OFF); + xfs_buf_update_cksum(bp, XFS_BTREE_SBLOCK_CRC_OFF); } bool @@ -276,8 +274,8 @@ xfs_btree_sblock_verify_crc( struct xfs_buf *bp) { if (xfs_sb_version_hascrc(&bp->b_target->bt_mount->m_sb)) - return xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_BTREE_SBLOCK_CRC_OFF); + return xfs_buf_verify_cksum(bp, XFS_BTREE_SBLOCK_CRC_OFF); + return true; } diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index afe7645e4b2b..107f2fdfe41f 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -396,7 +396,17 @@ _xfs_buf_map_pages( bp->b_addr = NULL; } else { int retried = 0; + unsigned noio_flag; + /* + * vm_map_ram() will allocate auxillary structures (e.g. + * pagetables) with GFP_KERNEL, yet we are likely to be under + * GFP_NOFS context here. Hence we need to tell memory reclaim + * that we are in such a context via PF_MEMALLOC_NOIO to prevent + * memory reclaim re-entering the filesystem here and + * potentially deadlocking. + */ + noio_flag = memalloc_noio_save(); do { bp->b_addr = vm_map_ram(bp->b_pages, bp->b_page_count, -1, PAGE_KERNEL); @@ -404,6 +414,7 @@ _xfs_buf_map_pages( break; vm_unmap_aliases(); } while (retried++ <= 1); + memalloc_noio_restore(noio_flag); if (!bp->b_addr) return -ENOMEM; @@ -445,8 +456,8 @@ _xfs_buf_find( numbytes = BBTOB(numblks); /* Check for IOs smaller than the sector size / not sector aligned */ - ASSERT(!(numbytes < (1 << btp->bt_sshift))); - ASSERT(!(BBTOB(blkno) & (xfs_off_t)btp->bt_smask)); + ASSERT(!(numbytes < btp->bt_meta_sectorsize)); + ASSERT(!(BBTOB(blkno) & (xfs_off_t)btp->bt_meta_sectormask)); /* * Corrupted block numbers can get through to here, unfortunately, so we @@ -1240,7 +1251,7 @@ next_chunk: bio = bio_alloc(GFP_NOIO, nr_pages); bio->bi_bdev = bp->b_target->bt_bdev; - bio->bi_sector = sector; + bio->bi_iter.bi_sector = sector; bio->bi_end_io = xfs_buf_bio_end_io; bio->bi_private = bp; @@ -1262,7 +1273,7 @@ next_chunk: total_nr_pages--; } - if (likely(bio->bi_size)) { + if (likely(bio->bi_iter.bi_size)) { if (xfs_buf_is_vmapped(bp)) { flush_kernel_vmap_range(bp->b_addr, xfs_buf_vmap_len(bp)); @@ -1593,16 +1604,15 @@ xfs_free_buftarg( kmem_free(btp); } -STATIC int -xfs_setsize_buftarg_flags( +int +xfs_setsize_buftarg( xfs_buftarg_t *btp, unsigned int blocksize, - unsigned int sectorsize, - int verbose) + unsigned int sectorsize) { - btp->bt_bsize = blocksize; - btp->bt_sshift = ffs(sectorsize) - 1; - btp->bt_smask = sectorsize - 1; + /* Set up metadata sector size info */ + btp->bt_meta_sectorsize = sectorsize; + btp->bt_meta_sectormask = sectorsize - 1; if (set_blocksize(btp->bt_bdev, sectorsize)) { char name[BDEVNAME_SIZE]; @@ -1615,30 +1625,25 @@ xfs_setsize_buftarg_flags( return EINVAL; } + /* Set up device logical sector size mask */ + btp->bt_logical_sectorsize = bdev_logical_block_size(btp->bt_bdev); + btp->bt_logical_sectormask = bdev_logical_block_size(btp->bt_bdev) - 1; + return 0; } /* - * When allocating the initial buffer target we have not yet - * read in the superblock, so don't know what sized sectors - * are being used at this early stage. Play safe. + * When allocating the initial buffer target we have not yet + * read in the superblock, so don't know what sized sectors + * are being used at this early stage. Play safe. */ STATIC int xfs_setsize_buftarg_early( xfs_buftarg_t *btp, struct block_device *bdev) { - return xfs_setsize_buftarg_flags(btp, - PAGE_SIZE, bdev_logical_block_size(bdev), 0); -} - -int -xfs_setsize_buftarg( - xfs_buftarg_t *btp, - unsigned int blocksize, - unsigned int sectorsize) -{ - return xfs_setsize_buftarg_flags(btp, blocksize, sectorsize, 1); + return xfs_setsize_buftarg(btp, PAGE_SIZE, + bdev_logical_block_size(bdev)); } xfs_buftarg_t * diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h index 1cf21a4a9f22..b8a3abf6cf47 100644 --- a/fs/xfs/xfs_buf.h +++ b/fs/xfs/xfs_buf.h @@ -88,14 +88,28 @@ typedef unsigned int xfs_buf_flags_t; */ #define XFS_BSTATE_DISPOSE (1 << 0) /* buffer being discarded */ +/* + * The xfs_buftarg contains 2 notions of "sector size" - + * + * 1) The metadata sector size, which is the minimum unit and + * alignment of IO which will be performed by metadata operations. + * 2) The device logical sector size + * + * The first is specified at mkfs time, and is stored on-disk in the + * superblock's sb_sectsize. + * + * The latter is derived from the underlying device, and controls direct IO + * alignment constraints. + */ typedef struct xfs_buftarg { dev_t bt_dev; struct block_device *bt_bdev; struct backing_dev_info *bt_bdi; struct xfs_mount *bt_mount; - unsigned int bt_bsize; - unsigned int bt_sshift; - size_t bt_smask; + unsigned int bt_meta_sectorsize; + size_t bt_meta_sectormask; + size_t bt_logical_sectorsize; + size_t bt_logical_sectormask; /* LRU control structures */ struct shrinker bt_shrinker; @@ -355,6 +369,20 @@ static inline void xfs_buf_relse(xfs_buf_t *bp) xfs_buf_rele(bp); } +static inline int +xfs_buf_verify_cksum(struct xfs_buf *bp, unsigned long cksum_offset) +{ + return xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), + cksum_offset); +} + +static inline void +xfs_buf_update_cksum(struct xfs_buf *bp, unsigned long cksum_offset) +{ + xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), + cksum_offset); +} + /* * Handling of buftargs. */ diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index 2227b9b050bb..8752821443be 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -182,21 +182,47 @@ xfs_buf_item_size( trace_xfs_buf_item_size(bip); } -static struct xfs_log_iovec * +static inline void +xfs_buf_item_copy_iovec( + struct xfs_log_vec *lv, + struct xfs_log_iovec **vecp, + struct xfs_buf *bp, + uint offset, + int first_bit, + uint nbits) +{ + offset += first_bit * XFS_BLF_CHUNK; + xlog_copy_iovec(lv, vecp, XLOG_REG_TYPE_BCHUNK, + xfs_buf_offset(bp, offset), + nbits * XFS_BLF_CHUNK); +} + +static inline bool +xfs_buf_item_straddle( + struct xfs_buf *bp, + uint offset, + int next_bit, + int last_bit) +{ + return xfs_buf_offset(bp, offset + (next_bit << XFS_BLF_SHIFT)) != + (xfs_buf_offset(bp, offset + (last_bit << XFS_BLF_SHIFT)) + + XFS_BLF_CHUNK); +} + +static void xfs_buf_item_format_segment( struct xfs_buf_log_item *bip, - struct xfs_log_iovec *vecp, + struct xfs_log_vec *lv, + struct xfs_log_iovec **vecp, uint offset, struct xfs_buf_log_format *blfp) { struct xfs_buf *bp = bip->bli_buf; uint base_size; - uint nvecs; int first_bit; int last_bit; int next_bit; uint nbits; - uint buffer_offset; /* copy the flags across from the base format item */ blfp->blf_flags = bip->__bli_format.blf_flags; @@ -208,21 +234,17 @@ xfs_buf_item_format_segment( */ base_size = xfs_buf_log_format_size(blfp); - nvecs = 0; first_bit = xfs_next_bit(blfp->blf_data_map, blfp->blf_map_size, 0); if (!(bip->bli_flags & XFS_BLI_STALE) && first_bit == -1) { /* * If the map is not be dirty in the transaction, mark * the size as zero and do not advance the vector pointer. */ - goto out; + return; } - vecp->i_addr = blfp; - vecp->i_len = base_size; - vecp->i_type = XLOG_REG_TYPE_BFORMAT; - vecp++; - nvecs = 1; + blfp = xlog_copy_iovec(lv, vecp, XLOG_REG_TYPE_BFORMAT, blfp, base_size); + blfp->blf_size = 1; if (bip->bli_flags & XFS_BLI_STALE) { /* @@ -232,14 +254,13 @@ xfs_buf_item_format_segment( */ trace_xfs_buf_item_format_stale(bip); ASSERT(blfp->blf_flags & XFS_BLF_CANCEL); - goto out; + return; } /* * Fill in an iovec for each set of contiguous chunks. */ - last_bit = first_bit; nbits = 1; for (;;) { @@ -252,42 +273,22 @@ xfs_buf_item_format_segment( next_bit = xfs_next_bit(blfp->blf_data_map, blfp->blf_map_size, (uint)last_bit + 1); /* - * If we run out of bits fill in the last iovec and get - * out of the loop. - * Else if we start a new set of bits then fill in the - * iovec for the series we were looking at and start - * counting the bits in the new one. - * Else we're still in the same set of bits so just - * keep counting and scanning. + * If we run out of bits fill in the last iovec and get out of + * the loop. Else if we start a new set of bits then fill in + * the iovec for the series we were looking at and start + * counting the bits in the new one. Else we're still in the + * same set of bits so just keep counting and scanning. */ if (next_bit == -1) { - buffer_offset = offset + first_bit * XFS_BLF_CHUNK; - vecp->i_addr = xfs_buf_offset(bp, buffer_offset); - vecp->i_len = nbits * XFS_BLF_CHUNK; - vecp->i_type = XLOG_REG_TYPE_BCHUNK; - nvecs++; + xfs_buf_item_copy_iovec(lv, vecp, bp, offset, + first_bit, nbits); + blfp->blf_size++; break; - } else if (next_bit != last_bit + 1) { - buffer_offset = offset + first_bit * XFS_BLF_CHUNK; - vecp->i_addr = xfs_buf_offset(bp, buffer_offset); - vecp->i_len = nbits * XFS_BLF_CHUNK; - vecp->i_type = XLOG_REG_TYPE_BCHUNK; - nvecs++; - vecp++; - first_bit = next_bit; - last_bit = next_bit; - nbits = 1; - } else if (xfs_buf_offset(bp, offset + - (next_bit << XFS_BLF_SHIFT)) != - (xfs_buf_offset(bp, offset + - (last_bit << XFS_BLF_SHIFT)) + - XFS_BLF_CHUNK)) { - buffer_offset = offset + first_bit * XFS_BLF_CHUNK; - vecp->i_addr = xfs_buf_offset(bp, buffer_offset); - vecp->i_len = nbits * XFS_BLF_CHUNK; - vecp->i_type = XLOG_REG_TYPE_BCHUNK; - nvecs++; - vecp++; + } else if (next_bit != last_bit + 1 || + xfs_buf_item_straddle(bp, offset, next_bit, last_bit)) { + xfs_buf_item_copy_iovec(lv, vecp, bp, offset, + first_bit, nbits); + blfp->blf_size++; first_bit = next_bit; last_bit = next_bit; nbits = 1; @@ -296,9 +297,6 @@ xfs_buf_item_format_segment( nbits++; } } -out: - blfp->blf_size = nvecs; - return vecp; } /* @@ -310,10 +308,11 @@ out: STATIC void xfs_buf_item_format( struct xfs_log_item *lip, - struct xfs_log_iovec *vecp) + struct xfs_log_vec *lv) { struct xfs_buf_log_item *bip = BUF_ITEM(lip); struct xfs_buf *bp = bip->bli_buf; + struct xfs_log_iovec *vecp = NULL; uint offset = 0; int i; @@ -354,8 +353,8 @@ xfs_buf_item_format( } for (i = 0; i < bip->bli_format_count; i++) { - vecp = xfs_buf_item_format_segment(bip, vecp, offset, - &bip->bli_formats[i]); + xfs_buf_item_format_segment(bip, lv, &vecp, offset, + &bip->bli_formats[i]); offset += bp->b_maps[i].bm_len; } @@ -797,20 +796,6 @@ xfs_buf_item_init( bip->bli_formats[i].blf_map_size = map_size; } -#ifdef XFS_TRANS_DEBUG - /* - * Allocate the arrays for tracking what needs to be logged - * and what our callers request to be logged. bli_orig - * holds a copy of the original, clean buffer for comparison - * against, and bli_logged keeps a 1 bit flag per byte in - * the buffer to indicate which bytes the callers have asked - * to have logged. - */ - bip->bli_orig = kmem_alloc(BBTOB(bp->b_length), KM_SLEEP); - memcpy(bip->bli_orig, bp->b_addr, BBTOB(bp->b_length)); - bip->bli_logged = kmem_zalloc(BBTOB(bp->b_length) / NBBY, KM_SLEEP); -#endif - /* * Put the buf item into the list of items attached to the * buffer at the front. @@ -958,11 +943,6 @@ STATIC void xfs_buf_item_free( xfs_buf_log_item_t *bip) { -#ifdef XFS_TRANS_DEBUG - kmem_free(bip->bli_orig); - kmem_free(bip->bli_logged); -#endif /* XFS_TRANS_DEBUG */ - xfs_buf_item_free_format(bip); kmem_zone_free(xfs_buf_item_zone, bip); } diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c index 796272a2e129..6cc5f6785a77 100644 --- a/fs/xfs/xfs_da_btree.c +++ b/fs/xfs/xfs_da_btree.c @@ -185,8 +185,8 @@ xfs_da3_node_write_verify( struct xfs_da3_node_hdr *hdr3 = bp->b_addr; if (!xfs_da3_node_verify(bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_verifier_error(bp); return; } @@ -196,7 +196,7 @@ xfs_da3_node_write_verify( if (bip) hdr3->info.lsn = cpu_to_be64(bip->bli_item.li_lsn); - xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_DA3_NODE_CRC_OFF); + xfs_buf_update_cksum(bp, XFS_DA3_NODE_CRC_OFF); } /* @@ -209,18 +209,20 @@ static void xfs_da3_node_read_verify( struct xfs_buf *bp) { - struct xfs_mount *mp = bp->b_target->bt_mount; struct xfs_da_blkinfo *info = bp->b_addr; switch (be16_to_cpu(info->magic)) { case XFS_DA3_NODE_MAGIC: - if (!xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_DA3_NODE_CRC_OFF)) + if (!xfs_buf_verify_cksum(bp, XFS_DA3_NODE_CRC_OFF)) { + xfs_buf_ioerror(bp, EFSBADCRC); break; + } /* fall through */ case XFS_DA_NODE_MAGIC: - if (!xfs_da3_node_verify(bp)) + if (!xfs_da3_node_verify(bp)) { + xfs_buf_ioerror(bp, EFSCORRUPTED); break; + } return; case XFS_ATTR_LEAF_MAGIC: case XFS_ATTR3_LEAF_MAGIC: @@ -237,8 +239,7 @@ xfs_da3_node_read_verify( } /* corrupt block */ - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); - xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_verifier_error(bp); } const struct xfs_buf_ops xfs_da3_node_buf_ops = { @@ -1295,7 +1296,7 @@ xfs_da3_fixhashpath( node = blk->bp->b_addr; dp->d_ops->node_hdr_from_disk(&nodehdr, node); btree = dp->d_ops->node_tree_p(node); - if (be32_to_cpu(btree->hashval) == lasthash) + if (be32_to_cpu(btree[blk->index].hashval) == lasthash) break; blk->hashval = lasthash; btree[blk->index].hashval = cpu_to_be32(lasthash); diff --git a/fs/xfs/xfs_dinode.h b/fs/xfs/xfs_dinode.h index e5869b50dc41..623bbe8fd921 100644 --- a/fs/xfs/xfs_dinode.h +++ b/fs/xfs/xfs_dinode.h @@ -89,6 +89,8 @@ typedef struct xfs_dinode { /* structure must be padded to 64 bit alignment */ } xfs_dinode_t; +#define XFS_DINODE_CRC_OFF offsetof(struct xfs_dinode, di_crc) + #define DI_MAX_FLUSH 0xffff /* diff --git a/fs/xfs/xfs_dir2.c b/fs/xfs/xfs_dir2.c index ce16ef02997a..fda46253966a 100644 --- a/fs/xfs/xfs_dir2.c +++ b/fs/xfs/xfs_dir2.c @@ -180,16 +180,23 @@ xfs_dir_init( xfs_inode_t *dp, xfs_inode_t *pdp) { - xfs_da_args_t args; + struct xfs_da_args *args; int error; - memset((char *)&args, 0, sizeof(args)); - args.dp = dp; - args.trans = tp; ASSERT(S_ISDIR(dp->i_d.di_mode)); - if ((error = xfs_dir_ino_validate(tp->t_mountp, pdp->i_ino))) + error = xfs_dir_ino_validate(tp->t_mountp, pdp->i_ino); + if (error) return error; - return xfs_dir2_sf_create(&args, pdp->i_ino); + + args = kmem_zalloc(sizeof(*args), KM_SLEEP | KM_NOFS); + if (!args) + return ENOMEM; + + args->dp = dp; + args->trans = tp; + error = xfs_dir2_sf_create(args, pdp->i_ino); + kmem_free(args); + return error; } /* @@ -205,41 +212,56 @@ xfs_dir_createname( xfs_bmap_free_t *flist, /* bmap's freeblock list */ xfs_extlen_t total) /* bmap's total block count */ { - xfs_da_args_t args; + struct xfs_da_args *args; int rval; int v; /* type-checking value */ ASSERT(S_ISDIR(dp->i_d.di_mode)); - if ((rval = xfs_dir_ino_validate(tp->t_mountp, inum))) + rval = xfs_dir_ino_validate(tp->t_mountp, inum); + if (rval) return rval; XFS_STATS_INC(xs_dir_create); - memset(&args, 0, sizeof(xfs_da_args_t)); - args.name = name->name; - args.namelen = name->len; - args.filetype = name->type; - args.hashval = dp->i_mount->m_dirnameops->hashname(name); - args.inumber = inum; - args.dp = dp; - args.firstblock = first; - args.flist = flist; - args.total = total; - args.whichfork = XFS_DATA_FORK; - args.trans = tp; - args.op_flags = XFS_DA_OP_ADDNAME | XFS_DA_OP_OKNOENT; - - if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) - rval = xfs_dir2_sf_addname(&args); - else if ((rval = xfs_dir2_isblock(tp, dp, &v))) - return rval; - else if (v) - rval = xfs_dir2_block_addname(&args); - else if ((rval = xfs_dir2_isleaf(tp, dp, &v))) - return rval; - else if (v) - rval = xfs_dir2_leaf_addname(&args); + args = kmem_zalloc(sizeof(*args), KM_SLEEP | KM_NOFS); + if (!args) + return ENOMEM; + + args->name = name->name; + args->namelen = name->len; + args->filetype = name->type; + args->hashval = dp->i_mount->m_dirnameops->hashname(name); + args->inumber = inum; + args->dp = dp; + args->firstblock = first; + args->flist = flist; + args->total = total; + args->whichfork = XFS_DATA_FORK; + args->trans = tp; + args->op_flags = XFS_DA_OP_ADDNAME | XFS_DA_OP_OKNOENT; + + if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) { + rval = xfs_dir2_sf_addname(args); + goto out_free; + } + + rval = xfs_dir2_isblock(tp, dp, &v); + if (rval) + goto out_free; + if (v) { + rval = xfs_dir2_block_addname(args); + goto out_free; + } + + rval = xfs_dir2_isleaf(tp, dp, &v); + if (rval) + goto out_free; + if (v) + rval = xfs_dir2_leaf_addname(args); else - rval = xfs_dir2_node_addname(&args); + rval = xfs_dir2_node_addname(args); + +out_free: + kmem_free(args); return rval; } @@ -282,46 +304,66 @@ xfs_dir_lookup( xfs_ino_t *inum, /* out: inode number */ struct xfs_name *ci_name) /* out: actual name if CI match */ { - xfs_da_args_t args; + struct xfs_da_args *args; int rval; int v; /* type-checking value */ ASSERT(S_ISDIR(dp->i_d.di_mode)); XFS_STATS_INC(xs_dir_lookup); - memset(&args, 0, sizeof(xfs_da_args_t)); - args.name = name->name; - args.namelen = name->len; - args.filetype = name->type; - args.hashval = dp->i_mount->m_dirnameops->hashname(name); - args.dp = dp; - args.whichfork = XFS_DATA_FORK; - args.trans = tp; - args.op_flags = XFS_DA_OP_OKNOENT; + /* + * We need to use KM_NOFS here so that lockdep will not throw false + * positive deadlock warnings on a non-transactional lookup path. It is + * safe to recurse into inode recalim in that case, but lockdep can't + * easily be taught about it. Hence KM_NOFS avoids having to add more + * lockdep Doing this avoids having to add a bunch of lockdep class + * annotations into the reclaim path for the ilock. + */ + args = kmem_zalloc(sizeof(*args), KM_SLEEP | KM_NOFS); + args->name = name->name; + args->namelen = name->len; + args->filetype = name->type; + args->hashval = dp->i_mount->m_dirnameops->hashname(name); + args->dp = dp; + args->whichfork = XFS_DATA_FORK; + args->trans = tp; + args->op_flags = XFS_DA_OP_OKNOENT; if (ci_name) - args.op_flags |= XFS_DA_OP_CILOOKUP; + args->op_flags |= XFS_DA_OP_CILOOKUP; - if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) - rval = xfs_dir2_sf_lookup(&args); - else if ((rval = xfs_dir2_isblock(tp, dp, &v))) - return rval; - else if (v) - rval = xfs_dir2_block_lookup(&args); - else if ((rval = xfs_dir2_isleaf(tp, dp, &v))) - return rval; - else if (v) - rval = xfs_dir2_leaf_lookup(&args); + if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) { + rval = xfs_dir2_sf_lookup(args); + goto out_check_rval; + } + + rval = xfs_dir2_isblock(tp, dp, &v); + if (rval) + goto out_free; + if (v) { + rval = xfs_dir2_block_lookup(args); + goto out_check_rval; + } + + rval = xfs_dir2_isleaf(tp, dp, &v); + if (rval) + goto out_free; + if (v) + rval = xfs_dir2_leaf_lookup(args); else - rval = xfs_dir2_node_lookup(&args); + rval = xfs_dir2_node_lookup(args); + +out_check_rval: if (rval == EEXIST) rval = 0; if (!rval) { - *inum = args.inumber; + *inum = args->inumber; if (ci_name) { - ci_name->name = args.value; - ci_name->len = args.valuelen; + ci_name->name = args->value; + ci_name->len = args->valuelen; } } +out_free: + kmem_free(args); return rval; } @@ -338,38 +380,51 @@ xfs_dir_removename( xfs_bmap_free_t *flist, /* bmap's freeblock list */ xfs_extlen_t total) /* bmap's total block count */ { - xfs_da_args_t args; + struct xfs_da_args *args; int rval; int v; /* type-checking value */ ASSERT(S_ISDIR(dp->i_d.di_mode)); XFS_STATS_INC(xs_dir_remove); - memset(&args, 0, sizeof(xfs_da_args_t)); - args.name = name->name; - args.namelen = name->len; - args.filetype = name->type; - args.hashval = dp->i_mount->m_dirnameops->hashname(name); - args.inumber = ino; - args.dp = dp; - args.firstblock = first; - args.flist = flist; - args.total = total; - args.whichfork = XFS_DATA_FORK; - args.trans = tp; - - if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) - rval = xfs_dir2_sf_removename(&args); - else if ((rval = xfs_dir2_isblock(tp, dp, &v))) - return rval; - else if (v) - rval = xfs_dir2_block_removename(&args); - else if ((rval = xfs_dir2_isleaf(tp, dp, &v))) - return rval; - else if (v) - rval = xfs_dir2_leaf_removename(&args); + args = kmem_zalloc(sizeof(*args), KM_SLEEP | KM_NOFS); + if (!args) + return ENOMEM; + + args->name = name->name; + args->namelen = name->len; + args->filetype = name->type; + args->hashval = dp->i_mount->m_dirnameops->hashname(name); + args->inumber = ino; + args->dp = dp; + args->firstblock = first; + args->flist = flist; + args->total = total; + args->whichfork = XFS_DATA_FORK; + args->trans = tp; + + if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) { + rval = xfs_dir2_sf_removename(args); + goto out_free; + } + + rval = xfs_dir2_isblock(tp, dp, &v); + if (rval) + goto out_free; + if (v) { + rval = xfs_dir2_block_removename(args); + goto out_free; + } + + rval = xfs_dir2_isleaf(tp, dp, &v); + if (rval) + goto out_free; + if (v) + rval = xfs_dir2_leaf_removename(args); else - rval = xfs_dir2_node_removename(&args); + rval = xfs_dir2_node_removename(args); +out_free: + kmem_free(args); return rval; } @@ -386,40 +441,54 @@ xfs_dir_replace( xfs_bmap_free_t *flist, /* bmap's freeblock list */ xfs_extlen_t total) /* bmap's total block count */ { - xfs_da_args_t args; + struct xfs_da_args *args; int rval; int v; /* type-checking value */ ASSERT(S_ISDIR(dp->i_d.di_mode)); - if ((rval = xfs_dir_ino_validate(tp->t_mountp, inum))) + rval = xfs_dir_ino_validate(tp->t_mountp, inum); + if (rval) return rval; - memset(&args, 0, sizeof(xfs_da_args_t)); - args.name = name->name; - args.namelen = name->len; - args.filetype = name->type; - args.hashval = dp->i_mount->m_dirnameops->hashname(name); - args.inumber = inum; - args.dp = dp; - args.firstblock = first; - args.flist = flist; - args.total = total; - args.whichfork = XFS_DATA_FORK; - args.trans = tp; - - if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) - rval = xfs_dir2_sf_replace(&args); - else if ((rval = xfs_dir2_isblock(tp, dp, &v))) - return rval; - else if (v) - rval = xfs_dir2_block_replace(&args); - else if ((rval = xfs_dir2_isleaf(tp, dp, &v))) - return rval; - else if (v) - rval = xfs_dir2_leaf_replace(&args); + args = kmem_zalloc(sizeof(*args), KM_SLEEP | KM_NOFS); + if (!args) + return ENOMEM; + + args->name = name->name; + args->namelen = name->len; + args->filetype = name->type; + args->hashval = dp->i_mount->m_dirnameops->hashname(name); + args->inumber = inum; + args->dp = dp; + args->firstblock = first; + args->flist = flist; + args->total = total; + args->whichfork = XFS_DATA_FORK; + args->trans = tp; + + if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) { + rval = xfs_dir2_sf_replace(args); + goto out_free; + } + + rval = xfs_dir2_isblock(tp, dp, &v); + if (rval) + goto out_free; + if (v) { + rval = xfs_dir2_block_replace(args); + goto out_free; + } + + rval = xfs_dir2_isleaf(tp, dp, &v); + if (rval) + goto out_free; + if (v) + rval = xfs_dir2_leaf_replace(args); else - rval = xfs_dir2_node_replace(&args); + rval = xfs_dir2_node_replace(args); +out_free: + kmem_free(args); return rval; } @@ -434,7 +503,7 @@ xfs_dir_canenter( struct xfs_name *name, /* name of entry to add */ uint resblks) { - xfs_da_args_t args; + struct xfs_da_args *args; int rval; int v; /* type-checking value */ @@ -443,29 +512,42 @@ xfs_dir_canenter( ASSERT(S_ISDIR(dp->i_d.di_mode)); - memset(&args, 0, sizeof(xfs_da_args_t)); - args.name = name->name; - args.namelen = name->len; - args.filetype = name->type; - args.hashval = dp->i_mount->m_dirnameops->hashname(name); - args.dp = dp; - args.whichfork = XFS_DATA_FORK; - args.trans = tp; - args.op_flags = XFS_DA_OP_JUSTCHECK | XFS_DA_OP_ADDNAME | + args = kmem_zalloc(sizeof(*args), KM_SLEEP | KM_NOFS); + if (!args) + return ENOMEM; + + args->name = name->name; + args->namelen = name->len; + args->filetype = name->type; + args->hashval = dp->i_mount->m_dirnameops->hashname(name); + args->dp = dp; + args->whichfork = XFS_DATA_FORK; + args->trans = tp; + args->op_flags = XFS_DA_OP_JUSTCHECK | XFS_DA_OP_ADDNAME | XFS_DA_OP_OKNOENT; - if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) - rval = xfs_dir2_sf_addname(&args); - else if ((rval = xfs_dir2_isblock(tp, dp, &v))) - return rval; - else if (v) - rval = xfs_dir2_block_addname(&args); - else if ((rval = xfs_dir2_isleaf(tp, dp, &v))) - return rval; - else if (v) - rval = xfs_dir2_leaf_addname(&args); + if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) { + rval = xfs_dir2_sf_addname(args); + goto out_free; + } + + rval = xfs_dir2_isblock(tp, dp, &v); + if (rval) + goto out_free; + if (v) { + rval = xfs_dir2_block_addname(args); + goto out_free; + } + + rval = xfs_dir2_isleaf(tp, dp, &v); + if (rval) + goto out_free; + if (v) + rval = xfs_dir2_leaf_addname(args); else - rval = xfs_dir2_node_addname(&args); + rval = xfs_dir2_node_addname(args); +out_free: + kmem_free(args); return rval; } diff --git a/fs/xfs/xfs_dir2_block.c b/fs/xfs/xfs_dir2_block.c index 90cdbf4b5f19..4f6a38cb83a4 100644 --- a/fs/xfs/xfs_dir2_block.c +++ b/fs/xfs/xfs_dir2_block.c @@ -89,13 +89,14 @@ xfs_dir3_block_read_verify( { struct xfs_mount *mp = bp->b_target->bt_mount; - if ((xfs_sb_version_hascrc(&mp->m_sb) && - !xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_DIR3_DATA_CRC_OFF)) || - !xfs_dir3_block_verify(bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); + if (xfs_sb_version_hascrc(&mp->m_sb) && + !xfs_buf_verify_cksum(bp, XFS_DIR3_DATA_CRC_OFF)) + xfs_buf_ioerror(bp, EFSBADCRC); + else if (!xfs_dir3_block_verify(bp)) xfs_buf_ioerror(bp, EFSCORRUPTED); - } + + if (bp->b_error) + xfs_verifier_error(bp); } static void @@ -107,8 +108,8 @@ xfs_dir3_block_write_verify( struct xfs_dir3_blk_hdr *hdr3 = bp->b_addr; if (!xfs_dir3_block_verify(bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_verifier_error(bp); return; } @@ -118,7 +119,7 @@ xfs_dir3_block_write_verify( if (bip) hdr3->lsn = cpu_to_be64(bip->bli_item.li_lsn); - xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_DIR3_DATA_CRC_OFF); + xfs_buf_update_cksum(bp, XFS_DIR3_DATA_CRC_OFF); } const struct xfs_buf_ops xfs_dir3_block_buf_ops = { diff --git a/fs/xfs/xfs_dir2_data.c b/fs/xfs/xfs_dir2_data.c index 70acff4ee173..afa4ad523f3f 100644 --- a/fs/xfs/xfs_dir2_data.c +++ b/fs/xfs/xfs_dir2_data.c @@ -241,7 +241,6 @@ static void xfs_dir3_data_reada_verify( struct xfs_buf *bp) { - struct xfs_mount *mp = bp->b_target->bt_mount; struct xfs_dir2_data_hdr *hdr = bp->b_addr; switch (hdr->magic) { @@ -255,8 +254,8 @@ xfs_dir3_data_reada_verify( xfs_dir3_data_verify(bp); return; default: - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, hdr); xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_verifier_error(bp); break; } } @@ -267,13 +266,14 @@ xfs_dir3_data_read_verify( { struct xfs_mount *mp = bp->b_target->bt_mount; - if ((xfs_sb_version_hascrc(&mp->m_sb) && - !xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_DIR3_DATA_CRC_OFF)) || - !xfs_dir3_data_verify(bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); + if (xfs_sb_version_hascrc(&mp->m_sb) && + !xfs_buf_verify_cksum(bp, XFS_DIR3_DATA_CRC_OFF)) + xfs_buf_ioerror(bp, EFSBADCRC); + else if (!xfs_dir3_data_verify(bp)) xfs_buf_ioerror(bp, EFSCORRUPTED); - } + + if (bp->b_error) + xfs_verifier_error(bp); } static void @@ -285,8 +285,8 @@ xfs_dir3_data_write_verify( struct xfs_dir3_blk_hdr *hdr3 = bp->b_addr; if (!xfs_dir3_data_verify(bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_verifier_error(bp); return; } @@ -296,7 +296,7 @@ xfs_dir3_data_write_verify( if (bip) hdr3->lsn = cpu_to_be64(bip->bli_item.li_lsn); - xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_DIR3_DATA_CRC_OFF); + xfs_buf_update_cksum(bp, XFS_DIR3_DATA_CRC_OFF); } const struct xfs_buf_ops xfs_dir3_data_buf_ops = { diff --git a/fs/xfs/xfs_dir2_leaf.c b/fs/xfs/xfs_dir2_leaf.c index ae47ec6e16c4..d36e97df1187 100644 --- a/fs/xfs/xfs_dir2_leaf.c +++ b/fs/xfs/xfs_dir2_leaf.c @@ -179,13 +179,14 @@ __read_verify( { struct xfs_mount *mp = bp->b_target->bt_mount; - if ((xfs_sb_version_hascrc(&mp->m_sb) && - !xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_DIR3_LEAF_CRC_OFF)) || - !xfs_dir3_leaf_verify(bp, magic)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); + if (xfs_sb_version_hascrc(&mp->m_sb) && + !xfs_buf_verify_cksum(bp, XFS_DIR3_LEAF_CRC_OFF)) + xfs_buf_ioerror(bp, EFSBADCRC); + else if (!xfs_dir3_leaf_verify(bp, magic)) xfs_buf_ioerror(bp, EFSCORRUPTED); - } + + if (bp->b_error) + xfs_verifier_error(bp); } static void @@ -198,8 +199,8 @@ __write_verify( struct xfs_dir3_leaf_hdr *hdr3 = bp->b_addr; if (!xfs_dir3_leaf_verify(bp, magic)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_verifier_error(bp); return; } @@ -209,7 +210,7 @@ __write_verify( if (bip) hdr3->info.lsn = cpu_to_be64(bip->bli_item.li_lsn); - xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_DIR3_LEAF_CRC_OFF); + xfs_buf_update_cksum(bp, XFS_DIR3_LEAF_CRC_OFF); } static void diff --git a/fs/xfs/xfs_dir2_node.c b/fs/xfs/xfs_dir2_node.c index 48c7d18f68c3..cb434d732681 100644 --- a/fs/xfs/xfs_dir2_node.c +++ b/fs/xfs/xfs_dir2_node.c @@ -115,13 +115,14 @@ xfs_dir3_free_read_verify( { struct xfs_mount *mp = bp->b_target->bt_mount; - if ((xfs_sb_version_hascrc(&mp->m_sb) && - !xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_DIR3_FREE_CRC_OFF)) || - !xfs_dir3_free_verify(bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); + if (xfs_sb_version_hascrc(&mp->m_sb) && + !xfs_buf_verify_cksum(bp, XFS_DIR3_FREE_CRC_OFF)) + xfs_buf_ioerror(bp, EFSBADCRC); + else if (!xfs_dir3_free_verify(bp)) xfs_buf_ioerror(bp, EFSCORRUPTED); - } + + if (bp->b_error) + xfs_verifier_error(bp); } static void @@ -133,8 +134,8 @@ xfs_dir3_free_write_verify( struct xfs_dir3_blk_hdr *hdr3 = bp->b_addr; if (!xfs_dir3_free_verify(bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_verifier_error(bp); return; } @@ -144,7 +145,7 @@ xfs_dir3_free_write_verify( if (bip) hdr3->lsn = cpu_to_be64(bip->bli_item.li_lsn); - xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_DIR3_FREE_CRC_OFF); + xfs_buf_update_cksum(bp, XFS_DIR3_FREE_CRC_OFF); } const struct xfs_buf_ops xfs_dir3_free_buf_ops = { diff --git a/fs/xfs/xfs_dir2_readdir.c b/fs/xfs/xfs_dir2_readdir.c index c4e50c6ed584..aead369e1c30 100644 --- a/fs/xfs/xfs_dir2_readdir.c +++ b/fs/xfs/xfs_dir2_readdir.c @@ -674,6 +674,7 @@ xfs_readdir( { int rval; /* return value */ int v; /* type-checking value */ + uint lock_mode; trace_xfs_readdir(dp); @@ -683,6 +684,7 @@ xfs_readdir( ASSERT(S_ISDIR(dp->i_d.di_mode)); XFS_STATS_INC(xs_dir_getdents); + lock_mode = xfs_ilock_data_map_shared(dp); if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) rval = xfs_dir2_sf_getdents(dp, ctx); else if ((rval = xfs_dir2_isblock(NULL, dp, &v))) @@ -691,5 +693,7 @@ xfs_readdir( rval = xfs_dir2_block_getdents(dp, ctx); else rval = xfs_dir2_leaf_getdents(dp, ctx, bufsize); + xfs_iunlock(dp, lock_mode); + return rval; } diff --git a/fs/xfs/xfs_dir2_sf.c b/fs/xfs/xfs_dir2_sf.c index aafc6e46cb58..3725fb1b902b 100644 --- a/fs/xfs/xfs_dir2_sf.c +++ b/fs/xfs/xfs_dir2_sf.c @@ -170,6 +170,7 @@ xfs_dir2_block_to_sf( char *ptr; /* current data pointer */ xfs_dir2_sf_entry_t *sfep; /* shortform entry */ xfs_dir2_sf_hdr_t *sfp; /* shortform directory header */ + xfs_dir2_sf_hdr_t *dst; /* temporary data buffer */ trace_xfs_dir2_block_to_sf(args); @@ -177,35 +178,20 @@ xfs_dir2_block_to_sf( mp = dp->i_mount; /* - * Make a copy of the block data, so we can shrink the inode - * and add local data. + * allocate a temporary destination buffer the size of the inode + * to format the data into. Once we have formatted the data, we + * can free the block and copy the formatted data into the inode literal + * area. */ - hdr = kmem_alloc(mp->m_dirblksize, KM_SLEEP); - memcpy(hdr, bp->b_addr, mp->m_dirblksize); - logflags = XFS_ILOG_CORE; - if ((error = xfs_dir2_shrink_inode(args, mp->m_dirdatablk, bp))) { - ASSERT(error != ENOSPC); - goto out; - } + dst = kmem_alloc(mp->m_sb.sb_inodesize, KM_SLEEP); + hdr = bp->b_addr; /* - * The buffer is now unconditionally gone, whether - * xfs_dir2_shrink_inode worked or not. - * - * Convert the inode to local format. - */ - dp->i_df.if_flags &= ~XFS_IFEXTENTS; - dp->i_df.if_flags |= XFS_IFINLINE; - dp->i_d.di_format = XFS_DINODE_FMT_LOCAL; - ASSERT(dp->i_df.if_bytes == 0); - xfs_idata_realloc(dp, size, XFS_DATA_FORK); - logflags |= XFS_ILOG_DDATA; - /* * Copy the header into the newly allocate local space. */ - sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; + sfp = (xfs_dir2_sf_hdr_t *)dst; memcpy(sfp, sfhp, xfs_dir2_sf_hdr_size(sfhp->i8count)); - dp->i_d.di_size = size; + /* * Set up to loop over the block's entries. */ @@ -258,10 +244,34 @@ xfs_dir2_block_to_sf( ptr += dp->d_ops->data_entsize(dep->namelen); } ASSERT((char *)sfep - (char *)sfp == size); + + /* now we are done with the block, we can shrink the inode */ + logflags = XFS_ILOG_CORE; + error = xfs_dir2_shrink_inode(args, mp->m_dirdatablk, bp); + if (error) { + ASSERT(error != ENOSPC); + goto out; + } + + /* + * The buffer is now unconditionally gone, whether + * xfs_dir2_shrink_inode worked or not. + * + * Convert the inode to local format and copy the data in. + */ + dp->i_df.if_flags &= ~XFS_IFEXTENTS; + dp->i_df.if_flags |= XFS_IFINLINE; + dp->i_d.di_format = XFS_DINODE_FMT_LOCAL; + ASSERT(dp->i_df.if_bytes == 0); + xfs_idata_realloc(dp, size, XFS_DATA_FORK); + + logflags |= XFS_ILOG_DDATA; + memcpy(dp->i_df.if_u1.if_data, dst, size); + dp->i_d.di_size = size; xfs_dir2_sf_check(args); out: xfs_trans_log_inode(args->trans, dp, logflags); - kmem_free(hdr); + kmem_free(dst); return error; } diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index 6b1e695caf0e..868b19f096bf 100644 --- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -469,16 +469,17 @@ xfs_qm_dqtobp( struct xfs_mount *mp = dqp->q_mount; xfs_dqid_t id = be32_to_cpu(dqp->q_core.d_id); struct xfs_trans *tp = (tpp ? *tpp : NULL); + uint lock_mode; dqp->q_fileoffset = (xfs_fileoff_t)id / mp->m_quotainfo->qi_dqperchunk; - xfs_ilock(quotip, XFS_ILOCK_SHARED); + lock_mode = xfs_ilock_data_map_shared(quotip); if (!xfs_this_quota_on(dqp->q_mount, dqp->dq_flags)) { /* * Return if this type of quotas is turned off while we * didn't have the quota inode lock. */ - xfs_iunlock(quotip, XFS_ILOCK_SHARED); + xfs_iunlock(quotip, lock_mode); return ESRCH; } @@ -488,7 +489,7 @@ xfs_qm_dqtobp( error = xfs_bmapi_read(quotip, dqp->q_fileoffset, XFS_DQUOT_CLUSTER_SIZE_FSB, &map, &nmaps, 0); - xfs_iunlock(quotip, XFS_ILOCK_SHARED); + xfs_iunlock(quotip, lock_mode); if (error) return error; @@ -614,7 +615,7 @@ xfs_qm_dqread( if (flags & XFS_QMOPT_DQALLOC) { tp = xfs_trans_alloc(mp, XFS_TRANS_QM_DQALLOC); - error = xfs_trans_reserve(tp, &M_RES(mp)->tr_attrsetm, + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_dqalloc, XFS_QM_DQALLOC_SPACE_RES(mp), 0); if (error) goto error1; diff --git a/fs/xfs/xfs_dquot_buf.c b/fs/xfs/xfs_dquot_buf.c index d401457d2f25..610da8177737 100644 --- a/fs/xfs/xfs_dquot_buf.c +++ b/fs/xfs/xfs_dquot_buf.c @@ -257,10 +257,13 @@ xfs_dquot_buf_read_verify( { struct xfs_mount *mp = bp->b_target->bt_mount; - if (!xfs_dquot_buf_verify_crc(mp, bp) || !xfs_dquot_buf_verify(mp, bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); + if (!xfs_dquot_buf_verify_crc(mp, bp)) + xfs_buf_ioerror(bp, EFSBADCRC); + else if (!xfs_dquot_buf_verify(mp, bp)) xfs_buf_ioerror(bp, EFSCORRUPTED); - } + + if (bp->b_error) + xfs_verifier_error(bp); } /* @@ -275,8 +278,8 @@ xfs_dquot_buf_write_verify( struct xfs_mount *mp = bp->b_target->bt_mount; if (!xfs_dquot_buf_verify(mp, bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_verifier_error(bp); return; } } diff --git a/fs/xfs/xfs_dquot_item.c b/fs/xfs/xfs_dquot_item.c index 92e5f62eefc6..f33fbaaa4d8a 100644 --- a/fs/xfs/xfs_dquot_item.c +++ b/fs/xfs/xfs_dquot_item.c @@ -57,20 +57,24 @@ xfs_qm_dquot_logitem_size( STATIC void xfs_qm_dquot_logitem_format( struct xfs_log_item *lip, - struct xfs_log_iovec *logvec) + struct xfs_log_vec *lv) { struct xfs_dq_logitem *qlip = DQUOT_ITEM(lip); - - logvec->i_addr = &qlip->qli_format; - logvec->i_len = sizeof(xfs_dq_logformat_t); - logvec->i_type = XLOG_REG_TYPE_QFORMAT; - logvec++; - logvec->i_addr = &qlip->qli_dquot->q_core; - logvec->i_len = sizeof(xfs_disk_dquot_t); - logvec->i_type = XLOG_REG_TYPE_DQUOT; - - qlip->qli_format.qlf_size = 2; - + struct xfs_log_iovec *vecp = NULL; + struct xfs_dq_logformat *qlf; + + qlf = xlog_prepare_iovec(lv, &vecp, XLOG_REG_TYPE_QFORMAT); + qlf->qlf_type = XFS_LI_DQUOT; + qlf->qlf_size = 2; + qlf->qlf_id = be32_to_cpu(qlip->qli_dquot->q_core.d_id); + qlf->qlf_blkno = qlip->qli_dquot->q_blkno; + qlf->qlf_len = 1; + qlf->qlf_boffset = qlip->qli_dquot->q_bufoffset; + xlog_finish_iovec(lv, vecp, sizeof(struct xfs_dq_logformat)); + + xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_DQUOT, + &qlip->qli_dquot->q_core, + sizeof(struct xfs_disk_dquot)); } /* @@ -257,18 +261,6 @@ xfs_qm_dquot_logitem_init( xfs_log_item_init(dqp->q_mount, &lp->qli_item, XFS_LI_DQUOT, &xfs_dquot_item_ops); lp->qli_dquot = dqp; - lp->qli_format.qlf_type = XFS_LI_DQUOT; - lp->qli_format.qlf_id = be32_to_cpu(dqp->q_core.d_id); - lp->qli_format.qlf_blkno = dqp->q_blkno; - lp->qli_format.qlf_len = 1; - /* - * This is just the offset of this dquot within its buffer - * (which is currently 1 FSB and probably won't change). - * Hence 32 bits for this offset should be just fine. - * Alternatively, we can store (bufoffset / sizeof(xfs_dqblk_t)) - * here, and recompute it at recovery time. - */ - lp->qli_format.qlf_boffset = (__uint32_t)dqp->q_bufoffset; } /*------------------ QUOTAOFF LOG ITEMS -------------------*/ @@ -294,26 +286,20 @@ xfs_qm_qoff_logitem_size( *nbytes += sizeof(struct xfs_qoff_logitem); } -/* - * This is called to fill in the vector of log iovecs for the - * given quotaoff log item. We use only 1 iovec, and we point that - * at the quotaoff_log_format structure embedded in the quotaoff item. - * It is at this point that we assert that all of the extent - * slots in the quotaoff item have been filled. - */ STATIC void xfs_qm_qoff_logitem_format( struct xfs_log_item *lip, - struct xfs_log_iovec *log_vector) + struct xfs_log_vec *lv) { struct xfs_qoff_logitem *qflip = QOFF_ITEM(lip); - - ASSERT(qflip->qql_format.qf_type == XFS_LI_QUOTAOFF); - - log_vector->i_addr = &qflip->qql_format; - log_vector->i_len = sizeof(xfs_qoff_logitem_t); - log_vector->i_type = XLOG_REG_TYPE_QUOTAOFF; - qflip->qql_format.qf_size = 1; + struct xfs_log_iovec *vecp = NULL; + struct xfs_qoff_logformat *qlf; + + qlf = xlog_prepare_iovec(lv, &vecp, XLOG_REG_TYPE_QUOTAOFF); + qlf->qf_type = XFS_LI_QUOTAOFF; + qlf->qf_size = 1; + qlf->qf_flags = qflip->qql_flags; + xlog_finish_iovec(lv, vecp, sizeof(struct xfs_qoff_logitem)); } /* @@ -453,8 +439,7 @@ xfs_qm_qoff_logitem_init( xfs_log_item_init(mp, &qf->qql_item, XFS_LI_QUOTAOFF, start ? &xfs_qm_qoffend_logitem_ops : &xfs_qm_qoff_logitem_ops); qf->qql_item.li_mountp = mp; - qf->qql_format.qf_type = XFS_LI_QUOTAOFF; - qf->qql_format.qf_flags = flags; qf->qql_start_lip = start; + qf->qql_flags = flags; return qf; } diff --git a/fs/xfs/xfs_dquot_item.h b/fs/xfs/xfs_dquot_item.h index 5acae2ada70b..502e9464634a 100644 --- a/fs/xfs/xfs_dquot_item.h +++ b/fs/xfs/xfs_dquot_item.h @@ -27,13 +27,12 @@ typedef struct xfs_dq_logitem { xfs_log_item_t qli_item; /* common portion */ struct xfs_dquot *qli_dquot; /* dquot ptr */ xfs_lsn_t qli_flush_lsn; /* lsn at last flush */ - xfs_dq_logformat_t qli_format; /* logged structure */ } xfs_dq_logitem_t; typedef struct xfs_qoff_logitem { xfs_log_item_t qql_item; /* common portion */ struct xfs_qoff_logitem *qql_start_lip; /* qoff-start logitem, if any */ - xfs_qoff_logformat_t qql_format; /* logged structure */ + unsigned int qql_flags; } xfs_qoff_logitem_t; diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c index 9995b807d627..edac5b057d28 100644 --- a/fs/xfs/xfs_error.c +++ b/fs/xfs/xfs_error.c @@ -156,7 +156,7 @@ xfs_error_report( { if (level <= xfs_error_level) { xfs_alert_tag(mp, XFS_PTAG_ERROR_REPORT, - "Internal error %s at line %d of file %s. Caller 0x%p", + "Internal error %s at line %d of file %s. Caller %pF", tag, linenum, filename, ra); xfs_stack_trace(); @@ -178,3 +178,28 @@ xfs_corruption_error( xfs_error_report(tag, level, mp, filename, linenum, ra); xfs_alert(mp, "Corruption detected. Unmount and run xfs_repair"); } + +/* + * Warnings specifically for verifier errors. Differentiate CRC vs. invalid + * values, and omit the stack trace unless the error level is tuned high. + */ +void +xfs_verifier_error( + struct xfs_buf *bp) +{ + struct xfs_mount *mp = bp->b_target->bt_mount; + + xfs_alert(mp, "Metadata %s detected at %pF, block 0x%llx", + bp->b_error == EFSBADCRC ? "CRC error" : "corruption", + __return_address, bp->b_bn); + + xfs_alert(mp, "Unmount and run xfs_repair"); + + if (xfs_error_level >= XFS_ERRLEVEL_LOW) { + xfs_alert(mp, "First 64 bytes of corrupted metadata buffer:"); + xfs_hex_dump(xfs_buf_offset(bp, 0), 64); + } + + if (xfs_error_level >= XFS_ERRLEVEL_HIGH) + xfs_stack_trace(); +} diff --git a/fs/xfs/xfs_error.h b/fs/xfs/xfs_error.h index 079a367f44ee..c1c57d4a4b5d 100644 --- a/fs/xfs/xfs_error.h +++ b/fs/xfs/xfs_error.h @@ -34,6 +34,7 @@ extern void xfs_error_report(const char *tag, int level, struct xfs_mount *mp, extern void xfs_corruption_error(const char *tag, int level, struct xfs_mount *mp, void *p, const char *filename, int linenum, inst_t *ra); +extern void xfs_verifier_error(struct xfs_buf *bp); #define XFS_ERROR_REPORT(e, lvl, mp) \ xfs_error_report(e, lvl, mp, __FILE__, __LINE__, __return_address) diff --git a/fs/xfs/xfs_extfree_item.c b/fs/xfs/xfs_extfree_item.c index 3680d04f973f..fb7a4c1ce1c5 100644 --- a/fs/xfs/xfs_extfree_item.c +++ b/fs/xfs/xfs_extfree_item.c @@ -26,6 +26,7 @@ #include "xfs_trans_priv.h" #include "xfs_buf_item.h" #include "xfs_extfree_item.h" +#include "xfs_log.h" kmem_zone_t *xfs_efi_zone; @@ -101,9 +102,10 @@ xfs_efi_item_size( STATIC void xfs_efi_item_format( struct xfs_log_item *lip, - struct xfs_log_iovec *log_vector) + struct xfs_log_vec *lv) { struct xfs_efi_log_item *efip = EFI_ITEM(lip); + struct xfs_log_iovec *vecp = NULL; ASSERT(atomic_read(&efip->efi_next_extent) == efip->efi_format.efi_nextents); @@ -111,10 +113,9 @@ xfs_efi_item_format( efip->efi_format.efi_type = XFS_LI_EFI; efip->efi_format.efi_size = 1; - log_vector->i_addr = &efip->efi_format; - log_vector->i_len = xfs_efi_item_sizeof(efip); - log_vector->i_type = XLOG_REG_TYPE_EFI_FORMAT; - ASSERT(log_vector->i_len >= sizeof(xfs_efi_log_format_t)); + xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_EFI_FORMAT, + &efip->efi_format, + xfs_efi_item_sizeof(efip)); } @@ -368,19 +369,19 @@ xfs_efd_item_size( STATIC void xfs_efd_item_format( struct xfs_log_item *lip, - struct xfs_log_iovec *log_vector) + struct xfs_log_vec *lv) { struct xfs_efd_log_item *efdp = EFD_ITEM(lip); + struct xfs_log_iovec *vecp = NULL; ASSERT(efdp->efd_next_extent == efdp->efd_format.efd_nextents); efdp->efd_format.efd_type = XFS_LI_EFD; efdp->efd_format.efd_size = 1; - log_vector->i_addr = &efdp->efd_format; - log_vector->i_len = xfs_efd_item_sizeof(efdp); - log_vector->i_type = XLOG_REG_TYPE_EFD_FORMAT; - ASSERT(log_vector->i_len >= sizeof(xfs_efd_log_format_t)); + xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_EFD_FORMAT, + &efdp->efd_format, + xfs_efd_item_sizeof(efdp)); } /* diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 52c91e143725..003c0051b62f 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -261,7 +261,8 @@ xfs_file_aio_read( xfs_buftarg_t *target = XFS_IS_REALTIME_INODE(ip) ? mp->m_rtdev_targp : mp->m_ddev_targp; - if ((pos & target->bt_smask) || (size & target->bt_smask)) { + /* DIO must be aligned to device logical sector size */ + if ((pos | size) & target->bt_logical_sectormask) { if (pos == i_size_read(inode)) return 0; return -XFS_ERROR(EINVAL); @@ -641,9 +642,11 @@ xfs_file_dio_aio_write( struct xfs_buftarg *target = XFS_IS_REALTIME_INODE(ip) ? mp->m_rtdev_targp : mp->m_ddev_targp; - if ((pos & target->bt_smask) || (count & target->bt_smask)) + /* DIO must be aligned to device logical sector size */ + if ((pos | count) & target->bt_logical_sectormask) return -XFS_ERROR(EINVAL); + /* "unaligned" here means not aligned to a filesystem block */ if ((pos & mp->m_blockmask) || ((pos + count) & mp->m_blockmask)) unaligned_io = 1; @@ -796,7 +799,7 @@ xfs_file_aio_write( XFS_STATS_ADD(xs_write_bytes, ret); /* Handle various SYNC-type writes */ - err = generic_write_sync(file, pos, ret); + err = generic_write_sync(file, iocb->ki_pos - ret, ret); if (err < 0) ret = err; } @@ -820,7 +823,8 @@ xfs_file_fallocate( if (!S_ISREG(inode->i_mode)) return -EINVAL; - if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) + if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | + FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE)) return -EOPNOTSUPP; xfs_ilock(ip, XFS_IOLOCK_EXCL); @@ -828,6 +832,20 @@ xfs_file_fallocate( error = xfs_free_file_space(ip, offset, len); if (error) goto out_unlock; + } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { + unsigned blksize_mask = (1 << inode->i_blkbits) - 1; + + if (offset & blksize_mask || len & blksize_mask) { + error = -EINVAL; + goto out_unlock; + } + + ASSERT(offset + len < i_size_read(inode)); + new_size = i_size_read(inode) - len; + + error = xfs_collapse_file_space(ip, offset, len); + if (error) + goto out_unlock; } else { if (!(mode & FALLOC_FL_KEEP_SIZE) && offset + len > i_size_read(inode)) { @@ -837,8 +855,11 @@ xfs_file_fallocate( goto out_unlock; } - error = xfs_alloc_file_space(ip, offset, len, - XFS_BMAPI_PREALLOC); + if (mode & FALLOC_FL_ZERO_RANGE) + error = xfs_zero_file_space(ip, offset, len); + else + error = xfs_alloc_file_space(ip, offset, len, + XFS_BMAPI_PREALLOC); if (error) goto out_unlock; } @@ -856,7 +877,7 @@ xfs_file_fallocate( if (ip->i_d.di_mode & S_IXGRP) ip->i_d.di_mode &= ~S_ISGID; - if (!(mode & FALLOC_FL_PUNCH_HOLE)) + if (!(mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE))) ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC; xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); @@ -912,7 +933,7 @@ xfs_dir_open( * If there are any blocks, read-ahead block 0 as we're almost * certain to have the next operation be a read there. */ - mode = xfs_ilock_map_shared(ip); + mode = xfs_ilock_data_map_shared(ip); if (ip->i_d.di_nextents > 0) xfs_dir3_data_readahead(NULL, ip, 0, -1); xfs_iunlock(ip, mode); @@ -1215,7 +1236,7 @@ xfs_seek_data( uint lock; int error; - lock = xfs_ilock_map_shared(ip); + lock = xfs_ilock_data_map_shared(ip); isize = i_size_read(inode); if (start >= isize) { @@ -1294,7 +1315,7 @@ out: offset = vfs_setpos(file, offset, inode->i_sb->s_maxbytes); out_unlock: - xfs_iunlock_map_shared(ip, lock); + xfs_iunlock(ip, lock); if (error) return -error; @@ -1319,7 +1340,7 @@ xfs_seek_hole( if (XFS_FORCED_SHUTDOWN(mp)) return -XFS_ERROR(EIO); - lock = xfs_ilock_map_shared(ip); + lock = xfs_ilock_data_map_shared(ip); isize = i_size_read(inode); if (start >= isize) { @@ -1402,7 +1423,7 @@ out: offset = vfs_setpos(file, offset, inode->i_sb->s_maxbytes); out_unlock: - xfs_iunlock_map_shared(ip, lock); + xfs_iunlock(ip, lock); if (error) return -error; @@ -1462,6 +1483,7 @@ const struct file_operations xfs_dir_file_operations = { static const struct vm_operations_struct xfs_file_vm_ops = { .fault = filemap_fault, + .map_pages = filemap_map_pages, .page_mkwrite = xfs_vm_page_mkwrite, .remap_pages = generic_file_remap_pages, }; diff --git a/fs/xfs/xfs_format.h b/fs/xfs/xfs_format.h index b6ab5a3cfa12..9898f31d05d8 100644 --- a/fs/xfs/xfs_format.h +++ b/fs/xfs/xfs_format.h @@ -145,6 +145,8 @@ struct xfs_dsymlink_hdr { __be64 sl_lsn; }; +#define XFS_SYMLINK_CRC_OFF offsetof(struct xfs_dsymlink_hdr, sl_crc) + /* * The maximum pathlen is 1024 bytes. Since the minimum file system * blocksize is 512 bytes, we can get a max of 3 extents back from diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c index e87719c5bebe..8f711db61a0c 100644 --- a/fs/xfs/xfs_ialloc.c +++ b/fs/xfs/xfs_ialloc.c @@ -52,7 +52,7 @@ xfs_ialloc_cluster_alignment( { if (xfs_sb_version_hasalign(&args->mp->m_sb) && args->mp->m_sb.sb_inoalignmt >= - XFS_B_TO_FSBT(args->mp, XFS_INODE_CLUSTER_SIZE(args->mp))) + XFS_B_TO_FSBT(args->mp, args->mp->m_inode_cluster_size)) return args->mp->m_sb.sb_inoalignmt; return 1; } @@ -170,27 +170,20 @@ xfs_ialloc_inode_init( { struct xfs_buf *fbuf; struct xfs_dinode *free; - int blks_per_cluster, nbufs, ninodes; + int nbufs, blks_per_cluster, inodes_per_cluster; int version; int i, j; xfs_daddr_t d; xfs_ino_t ino = 0; /* - * Loop over the new block(s), filling in the inodes. - * For small block sizes, manipulate the inodes in buffers - * which are multiples of the blocks size. + * Loop over the new block(s), filling in the inodes. For small block + * sizes, manipulate the inodes in buffers which are multiples of the + * blocks size. */ - if (mp->m_sb.sb_blocksize >= XFS_INODE_CLUSTER_SIZE(mp)) { - blks_per_cluster = 1; - nbufs = length; - ninodes = mp->m_sb.sb_inopblock; - } else { - blks_per_cluster = XFS_INODE_CLUSTER_SIZE(mp) / - mp->m_sb.sb_blocksize; - nbufs = length / blks_per_cluster; - ninodes = blks_per_cluster * mp->m_sb.sb_inopblock; - } + blks_per_cluster = xfs_icluster_size_fsb(mp); + inodes_per_cluster = blks_per_cluster << mp->m_sb.sb_inopblog; + nbufs = length / blks_per_cluster; /* * Figure out what version number to use in the inodes we create. If @@ -225,7 +218,7 @@ xfs_ialloc_inode_init( * they track in the AIL as if they were physically logged. */ if (tp) - xfs_icreate_log(tp, agno, agbno, XFS_IALLOC_INODES(mp), + xfs_icreate_log(tp, agno, agbno, mp->m_ialloc_inos, mp->m_sb.sb_inodesize, length, gen); } else if (xfs_sb_version_hasnlink(&mp->m_sb)) version = 2; @@ -246,7 +239,7 @@ xfs_ialloc_inode_init( /* Initialize the inode buffers and log them appropriately. */ fbuf->b_ops = &xfs_inode_buf_ops; xfs_buf_zero(fbuf, 0, BBTOB(fbuf->b_length)); - for (i = 0; i < ninodes; i++) { + for (i = 0; i < inodes_per_cluster; i++) { int ioffset = i << mp->m_sb.sb_inodelog; uint isize = xfs_dinode_size(version); @@ -329,11 +322,11 @@ xfs_ialloc_ag_alloc( * Locking will ensure that we don't have two callers in here * at one time. */ - newlen = XFS_IALLOC_INODES(args.mp); + newlen = args.mp->m_ialloc_inos; if (args.mp->m_maxicount && args.mp->m_sb.sb_icount + newlen > args.mp->m_maxicount) return XFS_ERROR(ENOSPC); - args.minlen = args.maxlen = XFS_IALLOC_BLOCKS(args.mp); + args.minlen = args.maxlen = args.mp->m_ialloc_blks; /* * First try to allocate inodes contiguous with the last-allocated * chunk of inodes. If the filesystem is striped, this will fill @@ -343,7 +336,7 @@ xfs_ialloc_ag_alloc( newino = be32_to_cpu(agi->agi_newino); agno = be32_to_cpu(agi->agi_seqno); args.agbno = XFS_AGINO_TO_AGBNO(args.mp, newino) + - XFS_IALLOC_BLOCKS(args.mp); + args.mp->m_ialloc_blks; if (likely(newino != NULLAGINO && (args.agbno < be32_to_cpu(agi->agi_length)))) { args.fsbno = XFS_AGB_TO_FSB(args.mp, agno, args.agbno); @@ -370,6 +363,18 @@ xfs_ialloc_ag_alloc( args.minleft = args.mp->m_in_maxlevels - 1; if ((error = xfs_alloc_vextent(&args))) return error; + + /* + * This request might have dirtied the transaction if the AG can + * satisfy the request, but the exact block was not available. + * If the allocation did fail, subsequent requests will relax + * the exact agbno requirement and increase the alignment + * instead. It is critical that the total size of the request + * (len + alignment + slop) does not increase from this point + * on, so reset minalignslop to ensure it is not included in + * subsequent requests. + */ + args.minalignslop = 0; } else args.fsbno = NULLFSBLOCK; @@ -585,7 +590,7 @@ xfs_ialloc_ag_select( * Is there enough free space for the file plus a block of * inodes? (if we need to allocate some)? */ - ineed = XFS_IALLOC_BLOCKS(mp); + ineed = mp->m_ialloc_blks; longest = pag->pagf_longest; if (!longest) longest = pag->pagf_flcount > 0; @@ -999,7 +1004,7 @@ xfs_dialloc( * inode. */ if (mp->m_maxicount && - mp->m_sb.sb_icount + XFS_IALLOC_INODES(mp) > mp->m_maxicount) { + mp->m_sb.sb_icount + mp->m_ialloc_inos > mp->m_maxicount) { noroom = 1; okalloc = 0; } @@ -1202,7 +1207,7 @@ xfs_difree( * When an inode cluster is free, it becomes eligible for removal */ if (!(mp->m_flags & XFS_MOUNT_IKEEP) && - (rec.ir_freecount == XFS_IALLOC_INODES(mp))) { + (rec.ir_freecount == mp->m_ialloc_inos)) { *delete = 1; *first_ino = XFS_AGINO_TO_INO(mp, agno, rec.ir_startino); @@ -1212,7 +1217,7 @@ xfs_difree( * AGI and Superblock inode counts, and mark the disk space * to be freed when the transaction is committed. */ - ilen = XFS_IALLOC_INODES(mp); + ilen = mp->m_ialloc_inos; be32_add_cpu(&agi->agi_count, -ilen); be32_add_cpu(&agi->agi_freecount, -(ilen - 1)); xfs_ialloc_log_agi(tp, agbp, XFS_AGI_COUNT | XFS_AGI_FREECOUNT); @@ -1228,9 +1233,9 @@ xfs_difree( goto error0; } - xfs_bmap_add_free(XFS_AGB_TO_FSB(mp, - agno, XFS_INO_TO_AGBNO(mp,rec.ir_startino)), - XFS_IALLOC_BLOCKS(mp), flist, mp); + xfs_bmap_add_free(XFS_AGB_TO_FSB(mp, agno, + XFS_AGINO_TO_AGBNO(mp, rec.ir_startino)), + mp->m_ialloc_blks, flist, mp); } else { *delete = 0; @@ -1311,7 +1316,7 @@ xfs_imap_lookup( /* check that the returned record contains the required inode */ if (rec.ir_startino > agino || - rec.ir_startino + XFS_IALLOC_INODES(mp) <= agino) + rec.ir_startino + mp->m_ialloc_inos <= agino) return EINVAL; /* for untrusted inodes check it is allocated first */ @@ -1384,7 +1389,7 @@ xfs_imap( return XFS_ERROR(EINVAL); } - blks_per_cluster = XFS_INODE_CLUSTER_SIZE(mp) >> mp->m_sb.sb_blocklog; + blks_per_cluster = xfs_icluster_size_fsb(mp); /* * For bulkstat and handle lookups, we have an untrusted inode number @@ -1405,7 +1410,7 @@ xfs_imap( * If the inode cluster size is the same as the blocksize or * smaller we get to the buffer by simple arithmetics. */ - if (XFS_INODE_CLUSTER_SIZE(mp) <= mp->m_sb.sb_blocksize) { + if (blks_per_cluster == 1) { offset = XFS_INO_TO_OFFSET(mp, ino); ASSERT(offset < mp->m_sb.sb_inopblock); @@ -1575,18 +1580,17 @@ xfs_agi_read_verify( struct xfs_buf *bp) { struct xfs_mount *mp = bp->b_target->bt_mount; - int agi_ok = 1; - if (xfs_sb_version_hascrc(&mp->m_sb)) - agi_ok = xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - offsetof(struct xfs_agi, agi_crc)); - agi_ok = agi_ok && xfs_agi_verify(bp); - - if (unlikely(XFS_TEST_ERROR(!agi_ok, mp, XFS_ERRTAG_IALLOC_READ_AGI, - XFS_RANDOM_IALLOC_READ_AGI))) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); + if (xfs_sb_version_hascrc(&mp->m_sb) && + !xfs_buf_verify_cksum(bp, XFS_AGI_CRC_OFF)) + xfs_buf_ioerror(bp, EFSBADCRC); + else if (XFS_TEST_ERROR(!xfs_agi_verify(bp), mp, + XFS_ERRTAG_IALLOC_READ_AGI, + XFS_RANDOM_IALLOC_READ_AGI)) xfs_buf_ioerror(bp, EFSCORRUPTED); - } + + if (bp->b_error) + xfs_verifier_error(bp); } static void @@ -1597,8 +1601,8 @@ xfs_agi_write_verify( struct xfs_buf_log_item *bip = bp->b_fspriv; if (!xfs_agi_verify(bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_verifier_error(bp); return; } @@ -1607,8 +1611,7 @@ xfs_agi_write_verify( if (bip) XFS_BUF_TO_AGI(bp)->agi_lsn = cpu_to_be64(bip->bli_item.li_lsn); - xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), - offsetof(struct xfs_agi, agi_crc)); + xfs_buf_update_cksum(bp, XFS_AGI_CRC_OFF); } const struct xfs_buf_ops xfs_agi_buf_ops = { diff --git a/fs/xfs/xfs_ialloc.h b/fs/xfs/xfs_ialloc.h index a8f76a5ff418..812365d17e67 100644 --- a/fs/xfs/xfs_ialloc.h +++ b/fs/xfs/xfs_ialloc.h @@ -25,17 +25,18 @@ struct xfs_mount; struct xfs_trans; struct xfs_btree_cur; -/* - * Allocation parameters for inode allocation. - */ -#define XFS_IALLOC_INODES(mp) (mp)->m_ialloc_inos -#define XFS_IALLOC_BLOCKS(mp) (mp)->m_ialloc_blks - -/* - * Move inodes in clusters of this size. - */ +/* Move inodes in clusters of this size */ #define XFS_INODE_BIG_CLUSTER_SIZE 8192 -#define XFS_INODE_CLUSTER_SIZE(mp) (mp)->m_inode_cluster_size + +/* Calculate and return the number of filesystem blocks per inode cluster */ +static inline int +xfs_icluster_size_fsb( + struct xfs_mount *mp) +{ + if (mp->m_sb.sb_blocksize >= mp->m_inode_cluster_size) + return 1; + return mp->m_inode_cluster_size >> mp->m_sb.sb_blocklog; +} /* * Make an inode pointer out of the buffer/offset. diff --git a/fs/xfs/xfs_ialloc_btree.c b/fs/xfs/xfs_ialloc_btree.c index c8fa5bbb36de..7e309b11e87d 100644 --- a/fs/xfs/xfs_ialloc_btree.c +++ b/fs/xfs/xfs_ialloc_btree.c @@ -243,12 +243,14 @@ static void xfs_inobt_read_verify( struct xfs_buf *bp) { - if (!(xfs_btree_sblock_verify_crc(bp) && - xfs_inobt_verify(bp))) { - trace_xfs_btree_corrupt(bp, _RET_IP_); - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, - bp->b_target->bt_mount, bp->b_addr); + if (!xfs_btree_sblock_verify_crc(bp)) + xfs_buf_ioerror(bp, EFSBADCRC); + else if (!xfs_inobt_verify(bp)) xfs_buf_ioerror(bp, EFSCORRUPTED); + + if (bp->b_error) { + trace_xfs_btree_corrupt(bp, _RET_IP_); + xfs_verifier_error(bp); } } @@ -258,9 +260,9 @@ xfs_inobt_write_verify( { if (!xfs_inobt_verify(bp)) { trace_xfs_btree_corrupt(bp, _RET_IP_); - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, - bp->b_target->bt_mount, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_verifier_error(bp); + return; } xfs_btree_sblock_calc_crc(bp); diff --git a/fs/xfs/xfs_icreate_item.c b/fs/xfs/xfs_icreate_item.c index d2eaccfa73f4..7e4549233251 100644 --- a/fs/xfs/xfs_icreate_item.c +++ b/fs/xfs/xfs_icreate_item.c @@ -28,6 +28,7 @@ #include "xfs_trans_priv.h" #include "xfs_error.h" #include "xfs_icreate_item.h" +#include "xfs_log.h" kmem_zone_t *xfs_icreate_zone; /* inode create item zone */ @@ -58,13 +59,14 @@ xfs_icreate_item_size( STATIC void xfs_icreate_item_format( struct xfs_log_item *lip, - struct xfs_log_iovec *log_vector) + struct xfs_log_vec *lv) { struct xfs_icreate_item *icp = ICR_ITEM(lip); + struct xfs_log_iovec *vecp = NULL; - log_vector->i_addr = (xfs_caddr_t)&icp->ic_format; - log_vector->i_len = sizeof(struct xfs_icreate_log); - log_vector->i_type = XLOG_REG_TYPE_ICREATE; + xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ICREATE, + &icp->ic_format, + sizeof(struct xfs_icreate_log)); } diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index 001aa893ed59..5e7a38fa6ee6 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -42,7 +42,6 @@ #include "xfs_bmap_util.h" #include "xfs_error.h" #include "xfs_quota.h" -#include "xfs_dinode.h" #include "xfs_filestream.h" #include "xfs_cksum.h" #include "xfs_trace.h" @@ -62,6 +61,8 @@ kmem_zone_t *xfs_inode_zone; STATIC int xfs_iflush_int(xfs_inode_t *, xfs_buf_t *); +STATIC int xfs_iunlink_remove(xfs_trans_t *, xfs_inode_t *); + /* * helper function to extract extent size hint from inode */ @@ -77,48 +78,44 @@ xfs_get_extsz_hint( } /* - * This is a wrapper routine around the xfs_ilock() routine used to centralize - * some grungy code. It is used in places that wish to lock the inode solely - * for reading the extents. The reason these places can't just call - * xfs_ilock(SHARED) is that the inode lock also guards to bringing in of the - * extents from disk for a file in b-tree format. If the inode is in b-tree - * format, then we need to lock the inode exclusively until the extents are read - * in. Locking it exclusively all the time would limit our parallelism - * unnecessarily, though. What we do instead is check to see if the extents - * have been read in yet, and only lock the inode exclusively if they have not. + * These two are wrapper routines around the xfs_ilock() routine used to + * centralize some grungy code. They are used in places that wish to lock the + * inode solely for reading the extents. The reason these places can't just + * call xfs_ilock(ip, XFS_ILOCK_SHARED) is that the inode lock also guards to + * bringing in of the extents from disk for a file in b-tree format. If the + * inode is in b-tree format, then we need to lock the inode exclusively until + * the extents are read in. Locking it exclusively all the time would limit + * our parallelism unnecessarily, though. What we do instead is check to see + * if the extents have been read in yet, and only lock the inode exclusively + * if they have not. * - * The function returns a value which should be given to the corresponding - * xfs_iunlock_map_shared(). This value is the mode in which the lock was - * actually taken. + * The functions return a value which should be given to the corresponding + * xfs_iunlock() call. */ uint -xfs_ilock_map_shared( - xfs_inode_t *ip) +xfs_ilock_data_map_shared( + struct xfs_inode *ip) { - uint lock_mode; + uint lock_mode = XFS_ILOCK_SHARED; - if ((ip->i_d.di_format == XFS_DINODE_FMT_BTREE) && - ((ip->i_df.if_flags & XFS_IFEXTENTS) == 0)) { + if (ip->i_d.di_format == XFS_DINODE_FMT_BTREE && + (ip->i_df.if_flags & XFS_IFEXTENTS) == 0) lock_mode = XFS_ILOCK_EXCL; - } else { - lock_mode = XFS_ILOCK_SHARED; - } - xfs_ilock(ip, lock_mode); - return lock_mode; } -/* - * This is simply the unlock routine to go with xfs_ilock_map_shared(). - * All it does is call xfs_iunlock() with the given lock_mode. - */ -void -xfs_iunlock_map_shared( - xfs_inode_t *ip, - unsigned int lock_mode) +uint +xfs_ilock_attr_map_shared( + struct xfs_inode *ip) { - xfs_iunlock(ip, lock_mode); + uint lock_mode = XFS_ILOCK_SHARED; + + if (ip->i_d.di_aformat == XFS_DINODE_FMT_BTREE && + (ip->i_afp->if_flags & XFS_IFEXTENTS) == 0) + lock_mode = XFS_ILOCK_EXCL; + xfs_ilock(ip, lock_mode); + return lock_mode; } /* @@ -588,9 +585,9 @@ xfs_lookup( if (XFS_FORCED_SHUTDOWN(dp->i_mount)) return XFS_ERROR(EIO); - lock_mode = xfs_ilock_map_shared(dp); + lock_mode = xfs_ilock_data_map_shared(dp); error = xfs_dir_lookup(NULL, dp, name, &inum, ci_name); - xfs_iunlock_map_shared(dp, lock_mode); + xfs_iunlock(dp, lock_mode); if (error) goto out; @@ -1119,7 +1116,7 @@ xfs_bumplink( { xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); - ASSERT(ip->i_d.di_nlink > 0); + ASSERT(ip->i_d.di_nlink > 0 || (VFS_I(ip)->i_state & I_LINKABLE)); ip->i_d.di_nlink++; inc_nlink(VFS_I(ip)); if ((ip->i_d.di_version == 1) && @@ -1169,10 +1166,7 @@ xfs_create( if (XFS_FORCED_SHUTDOWN(mp)) return XFS_ERROR(EIO); - if (dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) - prid = xfs_get_projid(dp); - else - prid = XFS_PROJID_DEFAULT; + prid = xfs_get_initial_prid(dp); /* * Make sure that we have allocated dquot(s) on disk. @@ -1337,6 +1331,113 @@ xfs_create( } int +xfs_create_tmpfile( + struct xfs_inode *dp, + struct dentry *dentry, + umode_t mode) +{ + struct xfs_mount *mp = dp->i_mount; + struct xfs_inode *ip = NULL; + struct xfs_trans *tp = NULL; + int error; + uint cancel_flags = XFS_TRANS_RELEASE_LOG_RES; + prid_t prid; + struct xfs_dquot *udqp = NULL; + struct xfs_dquot *gdqp = NULL; + struct xfs_dquot *pdqp = NULL; + struct xfs_trans_res *tres; + uint resblks; + + if (XFS_FORCED_SHUTDOWN(mp)) + return XFS_ERROR(EIO); + + prid = xfs_get_initial_prid(dp); + + /* + * Make sure that we have allocated dquot(s) on disk. + */ + error = xfs_qm_vop_dqalloc(dp, xfs_kuid_to_uid(current_fsuid()), + xfs_kgid_to_gid(current_fsgid()), prid, + XFS_QMOPT_QUOTALL | XFS_QMOPT_INHERIT, + &udqp, &gdqp, &pdqp); + if (error) + return error; + + resblks = XFS_IALLOC_SPACE_RES(mp); + tp = xfs_trans_alloc(mp, XFS_TRANS_CREATE_TMPFILE); + + tres = &M_RES(mp)->tr_create_tmpfile; + error = xfs_trans_reserve(tp, tres, resblks, 0); + if (error == ENOSPC) { + /* No space at all so try a "no-allocation" reservation */ + resblks = 0; + error = xfs_trans_reserve(tp, tres, 0, 0); + } + if (error) { + cancel_flags = 0; + goto out_trans_cancel; + } + + error = xfs_trans_reserve_quota(tp, mp, udqp, gdqp, + pdqp, resblks, 1, 0); + if (error) + goto out_trans_cancel; + + error = xfs_dir_ialloc(&tp, dp, mode, 1, 0, + prid, resblks > 0, &ip, NULL); + if (error) { + if (error == ENOSPC) + goto out_trans_cancel; + goto out_trans_abort; + } + + if (mp->m_flags & XFS_MOUNT_WSYNC) + xfs_trans_set_sync(tp); + + /* + * Attach the dquot(s) to the inodes and modify them incore. + * These ids of the inode couldn't have changed since the new + * inode has been locked ever since it was created. + */ + xfs_qm_vop_create_dqattach(tp, ip, udqp, gdqp, pdqp); + + ip->i_d.di_nlink--; + d_tmpfile(dentry, VFS_I(ip)); + error = xfs_iunlink(tp, ip); + if (error) + goto out_trans_abort; + + error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); + if (error) + goto out_release_inode; + + xfs_qm_dqrele(udqp); + xfs_qm_dqrele(gdqp); + xfs_qm_dqrele(pdqp); + + return 0; + + out_trans_abort: + cancel_flags |= XFS_TRANS_ABORT; + out_trans_cancel: + xfs_trans_cancel(tp, cancel_flags); + out_release_inode: + /* + * Wait until after the current transaction is aborted to + * release the inode. This prevents recursive transactions + * and deadlocks from xfs_inactive. + */ + if (ip) + IRELE(ip); + + xfs_qm_dqrele(udqp); + xfs_qm_dqrele(gdqp); + xfs_qm_dqrele(pdqp); + + return error; +} + +int xfs_link( xfs_inode_t *tdp, xfs_inode_t *sip, @@ -1401,6 +1502,12 @@ xfs_link( xfs_bmap_init(&free_list, &first_block); + if (sip->i_d.di_nlink == 0) { + error = xfs_iunlink_remove(tp, sip); + if (error) + goto abort_return; + } + error = xfs_dir_createname(tp, tdp, target_name, sip->i_ino, &first_block, &free_list, resblks); if (error) @@ -2141,8 +2248,8 @@ xfs_ifree_cluster( { xfs_mount_t *mp = free_ip->i_mount; int blks_per_cluster; + int inodes_per_cluster; int nbufs; - int ninodes; int i, j; xfs_daddr_t blkno; xfs_buf_t *bp; @@ -2152,18 +2259,11 @@ xfs_ifree_cluster( struct xfs_perag *pag; pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, inum)); - if (mp->m_sb.sb_blocksize >= XFS_INODE_CLUSTER_SIZE(mp)) { - blks_per_cluster = 1; - ninodes = mp->m_sb.sb_inopblock; - nbufs = XFS_IALLOC_BLOCKS(mp); - } else { - blks_per_cluster = XFS_INODE_CLUSTER_SIZE(mp) / - mp->m_sb.sb_blocksize; - ninodes = blks_per_cluster * mp->m_sb.sb_inopblock; - nbufs = XFS_IALLOC_BLOCKS(mp) / blks_per_cluster; - } + blks_per_cluster = xfs_icluster_size_fsb(mp); + inodes_per_cluster = blks_per_cluster << mp->m_sb.sb_inopblog; + nbufs = mp->m_ialloc_blks / blks_per_cluster; - for (j = 0; j < nbufs; j++, inum += ninodes) { + for (j = 0; j < nbufs; j++, inum += inodes_per_cluster) { blkno = XFS_AGB_TO_DADDR(mp, XFS_INO_TO_AGNO(mp, inum), XFS_INO_TO_AGBNO(mp, inum)); @@ -2225,7 +2325,7 @@ xfs_ifree_cluster( * transaction stale above, which means there is no point in * even trying to lock them. */ - for (i = 0; i < ninodes; i++) { + for (i = 0; i < inodes_per_cluster; i++) { retry: rcu_read_lock(); ip = radix_tree_lookup(&pag->pag_ici_root, @@ -2906,13 +3006,13 @@ xfs_iflush_cluster( pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino)); - inodes_per_cluster = XFS_INODE_CLUSTER_SIZE(mp) >> mp->m_sb.sb_inodelog; + inodes_per_cluster = mp->m_inode_cluster_size >> mp->m_sb.sb_inodelog; ilist_size = inodes_per_cluster * sizeof(xfs_inode_t *); ilist = kmem_alloc(ilist_size, KM_MAYFAIL|KM_NOFS); if (!ilist) goto out_put; - mask = ~(((XFS_INODE_CLUSTER_SIZE(mp) >> mp->m_sb.sb_inodelog)) - 1); + mask = ~(((mp->m_inode_cluster_size >> mp->m_sb.sb_inodelog)) - 1); first_index = XFS_INO_TO_AGINO(mp, ip->i_ino) & mask; rcu_read_lock(); /* really need a gang lookup range call here */ diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index 9e6efccbae04..396cc1fafd0d 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -20,6 +20,7 @@ #include "xfs_inode_buf.h" #include "xfs_inode_fork.h" +#include "xfs_dinode.h" /* * Kernel only inode definitions @@ -192,6 +193,15 @@ xfs_set_projid(struct xfs_inode *ip, ip->i_d.di_projid_lo = (__uint16_t) (projid & 0xffff); } +static inline prid_t +xfs_get_initial_prid(struct xfs_inode *dp) +{ + if (dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) + return xfs_get_projid(dp); + + return XFS_PROJID_DEFAULT; +} + /* * In-core inode flags. */ @@ -323,6 +333,8 @@ int xfs_lookup(struct xfs_inode *dp, struct xfs_name *name, struct xfs_inode **ipp, struct xfs_name *ci_name); int xfs_create(struct xfs_inode *dp, struct xfs_name *name, umode_t mode, xfs_dev_t rdev, struct xfs_inode **ipp); +int xfs_create_tmpfile(struct xfs_inode *dp, struct dentry *dentry, + umode_t mode); int xfs_remove(struct xfs_inode *dp, struct xfs_name *name, struct xfs_inode *ip); int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip, @@ -337,8 +349,8 @@ int xfs_ilock_nowait(xfs_inode_t *, uint); void xfs_iunlock(xfs_inode_t *, uint); void xfs_ilock_demote(xfs_inode_t *, uint); int xfs_isilocked(xfs_inode_t *, uint); -uint xfs_ilock_map_shared(xfs_inode_t *); -void xfs_iunlock_map_shared(xfs_inode_t *, uint); +uint xfs_ilock_data_map_shared(struct xfs_inode *); +uint xfs_ilock_attr_map_shared(struct xfs_inode *); int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, umode_t, xfs_nlink_t, xfs_dev_t, prid_t, int, struct xfs_buf **, xfs_inode_t **); diff --git a/fs/xfs/xfs_inode_buf.c b/fs/xfs/xfs_inode_buf.c index 4fc9f39dd89e..24e993996bdc 100644 --- a/fs/xfs/xfs_inode_buf.c +++ b/fs/xfs/xfs_inode_buf.c @@ -102,8 +102,7 @@ xfs_inode_buf_verify( } xfs_buf_ioerror(bp, EFSCORRUPTED); - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_HIGH, - mp, dip); + xfs_verifier_error(bp); #ifdef DEBUG xfs_alert(mp, "bad inode magic/vsn daddr %lld #%d (magic=%x)", @@ -306,7 +305,7 @@ xfs_dinode_verify( if (!xfs_sb_version_hascrc(&mp->m_sb)) return false; if (!xfs_verify_cksum((char *)dip, mp->m_sb.sb_inodesize, - offsetof(struct xfs_dinode, di_crc))) + XFS_DINODE_CRC_OFF)) return false; if (be64_to_cpu(dip->di_ino) != ip->i_ino) return false; @@ -327,7 +326,7 @@ xfs_dinode_calc_crc( ASSERT(xfs_sb_version_hascrc(&mp->m_sb)); crc = xfs_start_cksum((char *)dip, mp->m_sb.sb_inodesize, - offsetof(struct xfs_dinode, di_crc)); + XFS_DINODE_CRC_OFF); dip->di_crc = xfs_end_cksum(crc); } diff --git a/fs/xfs/xfs_inode_fork.c b/fs/xfs/xfs_inode_fork.c index cfee14a83cfe..73514c0486b7 100644 --- a/fs/xfs/xfs_inode_fork.c +++ b/fs/xfs/xfs_inode_fork.c @@ -431,6 +431,8 @@ xfs_iread_extents( xfs_ifork_t *ifp; xfs_extnum_t nextents; + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + if (unlikely(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE)) { XFS_ERROR_REPORT("xfs_iread_extents", XFS_ERRLEVEL_LOW, ip->i_mount); @@ -721,15 +723,16 @@ xfs_idestroy_fork( } /* - * xfs_iextents_copy() + * Convert in-core extents to on-disk form * - * This is called to copy the REAL extents (as opposed to the delayed - * allocation extents) from the inode into the given buffer. It - * returns the number of bytes copied into the buffer. + * For either the data or attr fork in extent format, we need to endian convert + * the in-core extent as we place them into the on-disk inode. * - * If there are no delayed allocation extents, then we can just - * memcpy() the extents into the buffer. Otherwise, we need to - * examine each extent in turn and skip those which are delayed. + * In the case of the data fork, the in-core and on-disk fork sizes can be + * different due to delayed allocation extents. We only copy on-disk extents + * here, so callers must always use the physical fork size to determine the + * size of the buffer passed to this routine. We will return the size actually + * used. */ int xfs_iextents_copy( diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c index 7c0d391f9a6e..686889b4a1e5 100644 --- a/fs/xfs/xfs_inode_item.c +++ b/fs/xfs/xfs_inode_item.c @@ -30,6 +30,7 @@ #include "xfs_trace.h" #include "xfs_trans_priv.h" #include "xfs_dinode.h" +#include "xfs_log.h" kmem_zone_t *xfs_ili_zone; /* inode log item zone */ @@ -39,27 +40,14 @@ static inline struct xfs_inode_log_item *INODE_ITEM(struct xfs_log_item *lip) return container_of(lip, struct xfs_inode_log_item, ili_item); } - -/* - * This returns the number of iovecs needed to log the given inode item. - * - * We need one iovec for the inode log format structure, one for the - * inode core, and possibly one for the inode data/extents/b-tree root - * and one for the inode attribute data/extents/b-tree root. - */ STATIC void -xfs_inode_item_size( - struct xfs_log_item *lip, +xfs_inode_item_data_fork_size( + struct xfs_inode_log_item *iip, int *nvecs, int *nbytes) { - struct xfs_inode_log_item *iip = INODE_ITEM(lip); struct xfs_inode *ip = iip->ili_inode; - *nvecs += 2; - *nbytes += sizeof(struct xfs_inode_log_format) + - xfs_icdinode_size(ip->i_d.di_version); - switch (ip->i_d.di_format) { case XFS_DINODE_FMT_EXTENTS: if ((iip->ili_fields & XFS_ILOG_DEXT) && @@ -70,7 +58,6 @@ xfs_inode_item_size( *nvecs += 1; } break; - case XFS_DINODE_FMT_BTREE: if ((iip->ili_fields & XFS_ILOG_DBROOT) && ip->i_df.if_broot_bytes > 0) { @@ -78,7 +65,6 @@ xfs_inode_item_size( *nvecs += 1; } break; - case XFS_DINODE_FMT_LOCAL: if ((iip->ili_fields & XFS_ILOG_DDATA) && ip->i_df.if_bytes > 0) { @@ -90,19 +76,20 @@ xfs_inode_item_size( case XFS_DINODE_FMT_DEV: case XFS_DINODE_FMT_UUID: break; - default: ASSERT(0); break; } +} - if (!XFS_IFORK_Q(ip)) - return; - +STATIC void +xfs_inode_item_attr_fork_size( + struct xfs_inode_log_item *iip, + int *nvecs, + int *nbytes) +{ + struct xfs_inode *ip = iip->ili_inode; - /* - * Log any necessary attribute data. - */ switch (ip->i_d.di_aformat) { case XFS_DINODE_FMT_EXTENTS: if ((iip->ili_fields & XFS_ILOG_AEXT) && @@ -113,7 +100,6 @@ xfs_inode_item_size( *nvecs += 1; } break; - case XFS_DINODE_FMT_BTREE: if ((iip->ili_fields & XFS_ILOG_ABROOT) && ip->i_afp->if_broot_bytes > 0) { @@ -121,7 +107,6 @@ xfs_inode_item_size( *nvecs += 1; } break; - case XFS_DINODE_FMT_LOCAL: if ((iip->ili_fields & XFS_ILOG_ADATA) && ip->i_afp->if_bytes > 0) { @@ -129,7 +114,6 @@ xfs_inode_item_size( *nvecs += 1; } break; - default: ASSERT(0); break; @@ -137,98 +121,67 @@ xfs_inode_item_size( } /* - * xfs_inode_item_format_extents - convert in-core extents to on-disk form - * - * For either the data or attr fork in extent format, we need to endian convert - * the in-core extent as we place them into the on-disk inode. In this case, we - * need to do this conversion before we write the extents into the log. Because - * we don't have the disk inode to write into here, we allocate a buffer and - * format the extents into it via xfs_iextents_copy(). We free the buffer in - * the unlock routine after the copy for the log has been made. + * This returns the number of iovecs needed to log the given inode item. * - * In the case of the data fork, the in-core and on-disk fork sizes can be - * different due to delayed allocation extents. We only log on-disk extents - * here, so always use the physical fork size to determine the size of the - * buffer we need to allocate. + * We need one iovec for the inode log format structure, one for the + * inode core, and possibly one for the inode data/extents/b-tree root + * and one for the inode attribute data/extents/b-tree root. */ STATIC void -xfs_inode_item_format_extents( - struct xfs_inode *ip, - struct xfs_log_iovec *vecp, - int whichfork, - int type) +xfs_inode_item_size( + struct xfs_log_item *lip, + int *nvecs, + int *nbytes) { - xfs_bmbt_rec_t *ext_buffer; + struct xfs_inode_log_item *iip = INODE_ITEM(lip); + struct xfs_inode *ip = iip->ili_inode; - ext_buffer = kmem_alloc(XFS_IFORK_SIZE(ip, whichfork), KM_SLEEP); - if (whichfork == XFS_DATA_FORK) - ip->i_itemp->ili_extents_buf = ext_buffer; - else - ip->i_itemp->ili_aextents_buf = ext_buffer; + *nvecs += 2; + *nbytes += sizeof(struct xfs_inode_log_format) + + xfs_icdinode_size(ip->i_d.di_version); - vecp->i_addr = ext_buffer; - vecp->i_len = xfs_iextents_copy(ip, ext_buffer, whichfork); - vecp->i_type = type; + xfs_inode_item_data_fork_size(iip, nvecs, nbytes); + if (XFS_IFORK_Q(ip)) + xfs_inode_item_attr_fork_size(iip, nvecs, nbytes); } /* - * This is called to fill in the vector of log iovecs for the - * given inode log item. It fills the first item with an inode - * log format structure, the second with the on-disk inode structure, - * and a possible third and/or fourth with the inode data/extents/b-tree - * root and inode attributes data/extents/b-tree root. + * If this is a v1 format inode, then we need to log it as such. This means + * that we have to copy the link count from the new field to the old. We + * don't have to worry about the new fields, because nothing trusts them as + * long as the old inode version number is there. */ STATIC void -xfs_inode_item_format( - struct xfs_log_item *lip, - struct xfs_log_iovec *vecp) +xfs_inode_item_format_v1_inode( + struct xfs_inode *ip) +{ + if (!xfs_sb_version_hasnlink(&ip->i_mount->m_sb)) { + /* + * Convert it back. + */ + ASSERT(ip->i_d.di_nlink <= XFS_MAXLINK_1); + ip->i_d.di_onlink = ip->i_d.di_nlink; + } else { + /* + * The superblock version has already been bumped, + * so just make the conversion to the new inode + * format permanent. + */ + ip->i_d.di_version = 2; + ip->i_d.di_onlink = 0; + memset(&(ip->i_d.di_pad[0]), 0, sizeof(ip->i_d.di_pad)); + } +} + +STATIC void +xfs_inode_item_format_data_fork( + struct xfs_inode_log_item *iip, + struct xfs_inode_log_format *ilf, + struct xfs_log_vec *lv, + struct xfs_log_iovec **vecp) { - struct xfs_inode_log_item *iip = INODE_ITEM(lip); struct xfs_inode *ip = iip->ili_inode; - uint nvecs; size_t data_bytes; - xfs_mount_t *mp; - - vecp->i_addr = &iip->ili_format; - vecp->i_len = sizeof(xfs_inode_log_format_t); - vecp->i_type = XLOG_REG_TYPE_IFORMAT; - vecp++; - nvecs = 1; - - vecp->i_addr = &ip->i_d; - vecp->i_len = xfs_icdinode_size(ip->i_d.di_version); - vecp->i_type = XLOG_REG_TYPE_ICORE; - vecp++; - nvecs++; - - /* - * If this is really an old format inode, then we need to - * log it as such. This means that we have to copy the link - * count from the new field to the old. We don't have to worry - * about the new fields, because nothing trusts them as long as - * the old inode version number is there. If the superblock already - * has a new version number, then we don't bother converting back. - */ - mp = ip->i_mount; - ASSERT(ip->i_d.di_version == 1 || xfs_sb_version_hasnlink(&mp->m_sb)); - if (ip->i_d.di_version == 1) { - if (!xfs_sb_version_hasnlink(&mp->m_sb)) { - /* - * Convert it back. - */ - ASSERT(ip->i_d.di_nlink <= XFS_MAXLINK_1); - ip->i_d.di_onlink = ip->i_d.di_nlink; - } else { - /* - * The superblock version has already been bumped, - * so just make the conversion to the new inode - * format permanent. - */ - ip->i_d.di_version = 2; - ip->i_d.di_onlink = 0; - memset(&(ip->i_d.di_pad[0]), 0, sizeof(ip->i_d.di_pad)); - } - } switch (ip->i_d.di_format) { case XFS_DINODE_FMT_EXTENTS: @@ -239,36 +192,23 @@ xfs_inode_item_format( if ((iip->ili_fields & XFS_ILOG_DEXT) && ip->i_d.di_nextents > 0 && ip->i_df.if_bytes > 0) { + struct xfs_bmbt_rec *p; + ASSERT(ip->i_df.if_u1.if_extents != NULL); ASSERT(ip->i_df.if_bytes / sizeof(xfs_bmbt_rec_t) > 0); - ASSERT(iip->ili_extents_buf == NULL); - -#ifdef XFS_NATIVE_HOST - if (ip->i_d.di_nextents == ip->i_df.if_bytes / - (uint)sizeof(xfs_bmbt_rec_t)) { - /* - * There are no delayed allocation - * extents, so just point to the - * real extents array. - */ - vecp->i_addr = ip->i_df.if_u1.if_extents; - vecp->i_len = ip->i_df.if_bytes; - vecp->i_type = XLOG_REG_TYPE_IEXT; - } else -#endif - { - xfs_inode_item_format_extents(ip, vecp, - XFS_DATA_FORK, XLOG_REG_TYPE_IEXT); - } - ASSERT(vecp->i_len <= ip->i_df.if_bytes); - iip->ili_format.ilf_dsize = vecp->i_len; - vecp++; - nvecs++; + + p = xlog_prepare_iovec(lv, vecp, XLOG_REG_TYPE_IEXT); + data_bytes = xfs_iextents_copy(ip, p, XFS_DATA_FORK); + xlog_finish_iovec(lv, *vecp, data_bytes); + + ASSERT(data_bytes <= ip->i_df.if_bytes); + + ilf->ilf_dsize = data_bytes; + ilf->ilf_size++; } else { iip->ili_fields &= ~XFS_ILOG_DEXT; } break; - case XFS_DINODE_FMT_BTREE: iip->ili_fields &= ~(XFS_ILOG_DDATA | XFS_ILOG_DEXT | @@ -277,80 +217,70 @@ xfs_inode_item_format( if ((iip->ili_fields & XFS_ILOG_DBROOT) && ip->i_df.if_broot_bytes > 0) { ASSERT(ip->i_df.if_broot != NULL); - vecp->i_addr = ip->i_df.if_broot; - vecp->i_len = ip->i_df.if_broot_bytes; - vecp->i_type = XLOG_REG_TYPE_IBROOT; - vecp++; - nvecs++; - iip->ili_format.ilf_dsize = ip->i_df.if_broot_bytes; + xlog_copy_iovec(lv, vecp, XLOG_REG_TYPE_IBROOT, + ip->i_df.if_broot, + ip->i_df.if_broot_bytes); + ilf->ilf_dsize = ip->i_df.if_broot_bytes; + ilf->ilf_size++; } else { ASSERT(!(iip->ili_fields & XFS_ILOG_DBROOT)); iip->ili_fields &= ~XFS_ILOG_DBROOT; } break; - case XFS_DINODE_FMT_LOCAL: iip->ili_fields &= ~(XFS_ILOG_DEXT | XFS_ILOG_DBROOT | XFS_ILOG_DEV | XFS_ILOG_UUID); if ((iip->ili_fields & XFS_ILOG_DDATA) && ip->i_df.if_bytes > 0) { - ASSERT(ip->i_df.if_u1.if_data != NULL); - ASSERT(ip->i_d.di_size > 0); - - vecp->i_addr = ip->i_df.if_u1.if_data; /* * Round i_bytes up to a word boundary. * The underlying memory is guaranteed to * to be there by xfs_idata_realloc(). */ data_bytes = roundup(ip->i_df.if_bytes, 4); - ASSERT((ip->i_df.if_real_bytes == 0) || - (ip->i_df.if_real_bytes == data_bytes)); - vecp->i_len = (int)data_bytes; - vecp->i_type = XLOG_REG_TYPE_ILOCAL; - vecp++; - nvecs++; - iip->ili_format.ilf_dsize = (unsigned)data_bytes; + ASSERT(ip->i_df.if_real_bytes == 0 || + ip->i_df.if_real_bytes == data_bytes); + ASSERT(ip->i_df.if_u1.if_data != NULL); + ASSERT(ip->i_d.di_size > 0); + xlog_copy_iovec(lv, vecp, XLOG_REG_TYPE_ILOCAL, + ip->i_df.if_u1.if_data, data_bytes); + ilf->ilf_dsize = (unsigned)data_bytes; + ilf->ilf_size++; } else { iip->ili_fields &= ~XFS_ILOG_DDATA; } break; - case XFS_DINODE_FMT_DEV: iip->ili_fields &= ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT | XFS_ILOG_DEXT | XFS_ILOG_UUID); - if (iip->ili_fields & XFS_ILOG_DEV) { - iip->ili_format.ilf_u.ilfu_rdev = - ip->i_df.if_u2.if_rdev; - } + if (iip->ili_fields & XFS_ILOG_DEV) + ilf->ilf_u.ilfu_rdev = ip->i_df.if_u2.if_rdev; break; - case XFS_DINODE_FMT_UUID: iip->ili_fields &= ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT | XFS_ILOG_DEXT | XFS_ILOG_DEV); - if (iip->ili_fields & XFS_ILOG_UUID) { - iip->ili_format.ilf_u.ilfu_uuid = - ip->i_df.if_u2.if_uuid; - } + if (iip->ili_fields & XFS_ILOG_UUID) + ilf->ilf_u.ilfu_uuid = ip->i_df.if_u2.if_uuid; break; - default: ASSERT(0); break; } +} - /* - * If there are no attributes associated with the file, then we're done. - */ - if (!XFS_IFORK_Q(ip)) { - iip->ili_fields &= - ~(XFS_ILOG_ADATA | XFS_ILOG_ABROOT | XFS_ILOG_AEXT); - goto out; - } +STATIC void +xfs_inode_item_format_attr_fork( + struct xfs_inode_log_item *iip, + struct xfs_inode_log_format *ilf, + struct xfs_log_vec *lv, + struct xfs_log_iovec **vecp) +{ + struct xfs_inode *ip = iip->ili_inode; + size_t data_bytes; switch (ip->i_d.di_aformat) { case XFS_DINODE_FMT_EXTENTS: @@ -360,30 +290,22 @@ xfs_inode_item_format( if ((iip->ili_fields & XFS_ILOG_AEXT) && ip->i_d.di_anextents > 0 && ip->i_afp->if_bytes > 0) { + struct xfs_bmbt_rec *p; + ASSERT(ip->i_afp->if_bytes / sizeof(xfs_bmbt_rec_t) == ip->i_d.di_anextents); ASSERT(ip->i_afp->if_u1.if_extents != NULL); -#ifdef XFS_NATIVE_HOST - /* - * There are not delayed allocation extents - * for attributes, so just point at the array. - */ - vecp->i_addr = ip->i_afp->if_u1.if_extents; - vecp->i_len = ip->i_afp->if_bytes; - vecp->i_type = XLOG_REG_TYPE_IATTR_EXT; -#else - ASSERT(iip->ili_aextents_buf == NULL); - xfs_inode_item_format_extents(ip, vecp, - XFS_ATTR_FORK, XLOG_REG_TYPE_IATTR_EXT); -#endif - iip->ili_format.ilf_asize = vecp->i_len; - vecp++; - nvecs++; + + p = xlog_prepare_iovec(lv, vecp, XLOG_REG_TYPE_IATTR_EXT); + data_bytes = xfs_iextents_copy(ip, p, XFS_ATTR_FORK); + xlog_finish_iovec(lv, *vecp, data_bytes); + + ilf->ilf_asize = data_bytes; + ilf->ilf_size++; } else { iip->ili_fields &= ~XFS_ILOG_AEXT; } break; - case XFS_DINODE_FMT_BTREE: iip->ili_fields &= ~(XFS_ILOG_ADATA | XFS_ILOG_AEXT); @@ -392,61 +314,89 @@ xfs_inode_item_format( ip->i_afp->if_broot_bytes > 0) { ASSERT(ip->i_afp->if_broot != NULL); - vecp->i_addr = ip->i_afp->if_broot; - vecp->i_len = ip->i_afp->if_broot_bytes; - vecp->i_type = XLOG_REG_TYPE_IATTR_BROOT; - vecp++; - nvecs++; - iip->ili_format.ilf_asize = ip->i_afp->if_broot_bytes; + xlog_copy_iovec(lv, vecp, XLOG_REG_TYPE_IATTR_BROOT, + ip->i_afp->if_broot, + ip->i_afp->if_broot_bytes); + ilf->ilf_asize = ip->i_afp->if_broot_bytes; + ilf->ilf_size++; } else { iip->ili_fields &= ~XFS_ILOG_ABROOT; } break; - case XFS_DINODE_FMT_LOCAL: iip->ili_fields &= ~(XFS_ILOG_AEXT | XFS_ILOG_ABROOT); if ((iip->ili_fields & XFS_ILOG_ADATA) && ip->i_afp->if_bytes > 0) { - ASSERT(ip->i_afp->if_u1.if_data != NULL); - - vecp->i_addr = ip->i_afp->if_u1.if_data; /* * Round i_bytes up to a word boundary. * The underlying memory is guaranteed to * to be there by xfs_idata_realloc(). */ data_bytes = roundup(ip->i_afp->if_bytes, 4); - ASSERT((ip->i_afp->if_real_bytes == 0) || - (ip->i_afp->if_real_bytes == data_bytes)); - vecp->i_len = (int)data_bytes; - vecp->i_type = XLOG_REG_TYPE_IATTR_LOCAL; - vecp++; - nvecs++; - iip->ili_format.ilf_asize = (unsigned)data_bytes; + ASSERT(ip->i_afp->if_real_bytes == 0 || + ip->i_afp->if_real_bytes == data_bytes); + ASSERT(ip->i_afp->if_u1.if_data != NULL); + xlog_copy_iovec(lv, vecp, XLOG_REG_TYPE_IATTR_LOCAL, + ip->i_afp->if_u1.if_data, + data_bytes); + ilf->ilf_asize = (unsigned)data_bytes; + ilf->ilf_size++; } else { iip->ili_fields &= ~XFS_ILOG_ADATA; } break; - default: ASSERT(0); break; } - -out: - /* - * Now update the log format that goes out to disk from the in-core - * values. We always write the inode core to make the arithmetic - * games in recovery easier, which isn't a big deal as just about any - * transaction would dirty it anyway. - */ - iip->ili_format.ilf_fields = XFS_ILOG_CORE | - (iip->ili_fields & ~XFS_ILOG_TIMESTAMP); - iip->ili_format.ilf_size = nvecs; } +/* + * This is called to fill in the vector of log iovecs for the given inode + * log item. It fills the first item with an inode log format structure, + * the second with the on-disk inode structure, and a possible third and/or + * fourth with the inode data/extents/b-tree root and inode attributes + * data/extents/b-tree root. + */ +STATIC void +xfs_inode_item_format( + struct xfs_log_item *lip, + struct xfs_log_vec *lv) +{ + struct xfs_inode_log_item *iip = INODE_ITEM(lip); + struct xfs_inode *ip = iip->ili_inode; + struct xfs_inode_log_format *ilf; + struct xfs_log_iovec *vecp = NULL; + + ilf = xlog_prepare_iovec(lv, &vecp, XLOG_REG_TYPE_IFORMAT); + ilf->ilf_type = XFS_LI_INODE; + ilf->ilf_ino = ip->i_ino; + ilf->ilf_blkno = ip->i_imap.im_blkno; + ilf->ilf_len = ip->i_imap.im_len; + ilf->ilf_boffset = ip->i_imap.im_boffset; + ilf->ilf_fields = XFS_ILOG_CORE; + ilf->ilf_size = 2; /* format + core */ + xlog_finish_iovec(lv, vecp, sizeof(struct xfs_inode_log_format)); + + if (ip->i_d.di_version == 1) + xfs_inode_item_format_v1_inode(ip); + xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ICORE, + &ip->i_d, + xfs_icdinode_size(ip->i_d.di_version)); + + xfs_inode_item_format_data_fork(iip, ilf, lv, &vecp); + if (XFS_IFORK_Q(ip)) { + xfs_inode_item_format_attr_fork(iip, ilf, lv, &vecp); + } else { + iip->ili_fields &= + ~(XFS_ILOG_ADATA | XFS_ILOG_ABROOT | XFS_ILOG_AEXT); + } + + /* update the format with the exact fields we actually logged */ + ilf->ilf_fields |= (iip->ili_fields & ~XFS_ILOG_TIMESTAMP); +} /* * This is called to pin the inode associated with the inode log @@ -563,27 +513,6 @@ xfs_inode_item_unlock( ASSERT(ip->i_itemp != NULL); ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - /* - * If the inode needed a separate buffer with which to log - * its extents, then free it now. - */ - if (iip->ili_extents_buf != NULL) { - ASSERT(ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS); - ASSERT(ip->i_d.di_nextents > 0); - ASSERT(iip->ili_fields & XFS_ILOG_DEXT); - ASSERT(ip->i_df.if_bytes > 0); - kmem_free(iip->ili_extents_buf); - iip->ili_extents_buf = NULL; - } - if (iip->ili_aextents_buf != NULL) { - ASSERT(ip->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS); - ASSERT(ip->i_d.di_anextents > 0); - ASSERT(iip->ili_fields & XFS_ILOG_AEXT); - ASSERT(ip->i_afp->if_bytes > 0); - kmem_free(iip->ili_aextents_buf); - iip->ili_aextents_buf = NULL; - } - lock_flags = iip->ili_lock_flags; iip->ili_lock_flags = 0; if (lock_flags) @@ -670,11 +599,6 @@ xfs_inode_item_init( iip->ili_inode = ip; xfs_log_item_init(mp, &iip->ili_item, XFS_LI_INODE, &xfs_inode_item_ops); - iip->ili_format.ilf_type = XFS_LI_INODE; - iip->ili_format.ilf_ino = ip->i_ino; - iip->ili_format.ilf_blkno = ip->i_imap.im_blkno; - iip->ili_format.ilf_len = ip->i_imap.im_len; - iip->ili_format.ilf_boffset = ip->i_imap.im_boffset; } /* diff --git a/fs/xfs/xfs_inode_item.h b/fs/xfs/xfs_inode_item.h index dce4d656768c..488d81254e28 100644 --- a/fs/xfs/xfs_inode_item.h +++ b/fs/xfs/xfs_inode_item.h @@ -34,11 +34,6 @@ typedef struct xfs_inode_log_item { unsigned short ili_logged; /* flushed logged data */ unsigned int ili_last_fields; /* fields when flushed */ unsigned int ili_fields; /* fields to be logged */ - struct xfs_bmbt_rec *ili_extents_buf; /* array of logged - data exts */ - struct xfs_bmbt_rec *ili_aextents_buf; /* array of logged - attr exts */ - xfs_inode_log_format_t ili_format; /* logged structure */ } xfs_inode_log_item_t; static inline int xfs_inode_clean(xfs_inode_t *ip) diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index 33ad9a77791f..bcfe61202115 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -112,15 +112,11 @@ xfs_find_handle( memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); hsize = sizeof(xfs_fsid_t); } else { - int lock_mode; - - lock_mode = xfs_ilock_map_shared(ip); handle.ha_fid.fid_len = sizeof(xfs_fid_t) - sizeof(handle.ha_fid.fid_len); handle.ha_fid.fid_pad = 0; handle.ha_fid.fid_gen = ip->i_d.di_gen; handle.ha_fid.fid_ino = ip->i_ino; - xfs_iunlock_map_shared(ip, lock_mode); hsize = XFS_HSIZE(handle); } @@ -1587,7 +1583,7 @@ xfs_file_ioctl( XFS_IS_REALTIME_INODE(ip) ? mp->m_rtdev_targp : mp->m_ddev_targp; - da.d_mem = da.d_miniosz = 1 << target->bt_sshift; + da.d_mem = da.d_miniosz = target->bt_logical_sectorsize; da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); if (copy_to_user(arg, &da, sizeof(da))) diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 22d1cbea283d..3b80ebae05f5 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -128,7 +128,6 @@ xfs_iomap_write_direct( xfs_fsblock_t firstfsb; xfs_extlen_t extsz, temp; int nimaps; - int bmapi_flag; int quota_flag; int rt; xfs_trans_t *tp; @@ -200,18 +199,15 @@ xfs_iomap_write_direct( xfs_trans_ijoin(tp, ip, 0); - bmapi_flag = 0; - if (offset < XFS_ISIZE(ip) || extsz) - bmapi_flag |= XFS_BMAPI_PREALLOC; - /* * From this point onwards we overwrite the imap pointer that the * caller gave to us. */ xfs_bmap_init(&free_list, &firstfsb); nimaps = 1; - error = xfs_bmapi_write(tp, ip, offset_fsb, count_fsb, bmapi_flag, - &firstfsb, 0, imap, &nimaps, &free_list); + error = xfs_bmapi_write(tp, ip, offset_fsb, count_fsb, + XFS_BMAPI_PREALLOC, &firstfsb, 0, + imap, &nimaps, &free_list); if (error) goto out_bmap_cancel; diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index 104455b8046c..89b07e43ca28 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -39,6 +39,7 @@ #include "xfs_da_btree.h" #include "xfs_dir2_priv.h" #include "xfs_dinode.h" +#include "xfs_trans_space.h" #include <linux/capability.h> #include <linux/xattr.h> @@ -48,6 +49,18 @@ #include <linux/fiemap.h> #include <linux/slab.h> +/* + * Directories have different lock order w.r.t. mmap_sem compared to regular + * files. This is due to readdir potentially triggering page faults on a user + * buffer inside filldir(), and this happens with the ilock on the directory + * held. For regular files, the lock order is the other way around - the + * mmap_sem is taken during the page fault, and then we lock the ilock to do + * block mapping. Hence we need a different class for the directory ilock so + * that lockdep can tell them apart. + */ +static struct lock_class_key xfs_nondir_ilock_class; +static struct lock_class_key xfs_dir_ilock_class; + static int xfs_initxattrs( struct inode *inode, @@ -123,7 +136,7 @@ xfs_vn_mknod( { struct inode *inode; struct xfs_inode *ip = NULL; - struct posix_acl *default_acl = NULL; + struct posix_acl *default_acl, *acl; struct xfs_name name; int error; @@ -139,14 +152,9 @@ xfs_vn_mknod( rdev = 0; } - if (IS_POSIXACL(dir)) { - default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT); - if (IS_ERR(default_acl)) - return PTR_ERR(default_acl); - - if (!default_acl) - mode &= ~current_umask(); - } + error = posix_acl_create(dir, &mode, &default_acl, &acl); + if (error) + return error; xfs_dentry_to_name(&name, dentry, mode); error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip); @@ -159,22 +167,30 @@ xfs_vn_mknod( if (unlikely(error)) goto out_cleanup_inode; +#ifdef CONFIG_XFS_POSIX_ACL if (default_acl) { - error = -xfs_inherit_acl(inode, default_acl); - default_acl = NULL; - if (unlikely(error)) + error = xfs_set_acl(inode, default_acl, ACL_TYPE_DEFAULT); + if (error) goto out_cleanup_inode; } - + if (acl) { + error = xfs_set_acl(inode, acl, ACL_TYPE_ACCESS); + if (error) + goto out_cleanup_inode; + } +#endif d_instantiate(dentry, inode); + out_free_acl: + if (default_acl) + posix_acl_release(default_acl); + if (acl) + posix_acl_release(acl); return -error; out_cleanup_inode: xfs_cleanup_inode(dir, inode, dentry); - out_free_acl: - posix_acl_release(default_acl); - return -error; + goto out_free_acl; } STATIC int @@ -391,18 +407,6 @@ xfs_vn_follow_link( return NULL; } -STATIC void -xfs_vn_put_link( - struct dentry *dentry, - struct nameidata *nd, - void *p) -{ - char *s = nd_get_link(nd); - - if (!IS_ERR(s)) - kfree(s); -} - STATIC int xfs_vn_getattr( struct vfsmount *mnt, @@ -459,14 +463,12 @@ xfs_vn_getattr( static void xfs_setattr_mode( - struct xfs_trans *tp, struct xfs_inode *ip, struct iattr *iattr) { - struct inode *inode = VFS_I(ip); - umode_t mode = iattr->ia_mode; + struct inode *inode = VFS_I(ip); + umode_t mode = iattr->ia_mode; - ASSERT(tp); ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); ip->i_d.di_mode &= S_IFMT; @@ -476,6 +478,32 @@ xfs_setattr_mode( inode->i_mode |= mode & ~S_IFMT; } +static void +xfs_setattr_time( + struct xfs_inode *ip, + struct iattr *iattr) +{ + struct inode *inode = VFS_I(ip); + + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); + + if (iattr->ia_valid & ATTR_ATIME) { + inode->i_atime = iattr->ia_atime; + ip->i_d.di_atime.t_sec = iattr->ia_atime.tv_sec; + ip->i_d.di_atime.t_nsec = iattr->ia_atime.tv_nsec; + } + if (iattr->ia_valid & ATTR_CTIME) { + inode->i_ctime = iattr->ia_ctime; + ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec; + ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec; + } + if (iattr->ia_valid & ATTR_MTIME) { + inode->i_mtime = iattr->ia_mtime; + ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec; + ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec; + } +} + int xfs_setattr_nonsize( struct xfs_inode *ip, @@ -630,30 +658,10 @@ xfs_setattr_nonsize( } } - /* - * Change file access modes. - */ if (mask & ATTR_MODE) - xfs_setattr_mode(tp, ip, iattr); - - /* - * Change file access or modified times. - */ - if (mask & ATTR_ATIME) { - inode->i_atime = iattr->ia_atime; - ip->i_d.di_atime.t_sec = iattr->ia_atime.tv_sec; - ip->i_d.di_atime.t_nsec = iattr->ia_atime.tv_nsec; - } - if (mask & ATTR_CTIME) { - inode->i_ctime = iattr->ia_ctime; - ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec; - ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec; - } - if (mask & ATTR_MTIME) { - inode->i_mtime = iattr->ia_mtime; - ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec; - ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec; - } + xfs_setattr_mode(ip, iattr); + if (mask & (ATTR_ATIME|ATTR_CTIME|ATTR_MTIME)) + xfs_setattr_time(ip, iattr); xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); @@ -684,7 +692,7 @@ xfs_setattr_nonsize( * Posix ACL code seems to care about this issue either. */ if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) { - error = -xfs_acl_chmod(inode); + error = -posix_acl_chmod(inode, inode->i_mode); if (error) return XFS_ERROR(error); } @@ -710,7 +718,6 @@ xfs_setattr_size( { struct xfs_mount *mp = ip->i_mount; struct inode *inode = VFS_I(ip); - int mask = iattr->ia_valid; xfs_off_t oldsize, newsize; struct xfs_trans *tp; int error; @@ -731,8 +738,8 @@ xfs_setattr_size( ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL)); ASSERT(S_ISREG(ip->i_d.di_mode)); - ASSERT((mask & (ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET| - ATTR_MTIME_SET|ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0); + ASSERT((iattr->ia_valid & (ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET| + ATTR_MTIME_SET|ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0); oldsize = inode->i_size; newsize = iattr->ia_size; @@ -741,7 +748,7 @@ xfs_setattr_size( * Short circuit the truncate case for zero length files. */ if (newsize == 0 && oldsize == 0 && ip->i_d.di_nextents == 0) { - if (!(mask & (ATTR_CTIME|ATTR_MTIME))) + if (!(iattr->ia_valid & (ATTR_CTIME|ATTR_MTIME))) return 0; /* @@ -829,10 +836,11 @@ xfs_setattr_size( * these flags set. For all other operations the VFS set these flags * explicitly if it wants a timestamp update. */ - if (newsize != oldsize && (!(mask & (ATTR_CTIME | ATTR_MTIME)))) { + if (newsize != oldsize && + !(iattr->ia_valid & (ATTR_CTIME | ATTR_MTIME))) { iattr->ia_ctime = iattr->ia_mtime = current_fs_time(inode->i_sb); - mask |= ATTR_CTIME | ATTR_MTIME; + iattr->ia_valid |= ATTR_CTIME | ATTR_MTIME; } /* @@ -868,22 +876,10 @@ xfs_setattr_size( xfs_inode_clear_eofblocks_tag(ip); } - /* - * Change file access modes. - */ - if (mask & ATTR_MODE) - xfs_setattr_mode(tp, ip, iattr); - - if (mask & ATTR_CTIME) { - inode->i_ctime = iattr->ia_ctime; - ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec; - ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec; - } - if (mask & ATTR_MTIME) { - inode->i_mtime = iattr->ia_mtime; - ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec; - ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec; - } + if (iattr->ia_valid & ATTR_MODE) + xfs_setattr_mode(ip, iattr); + if (iattr->ia_valid & (ATTR_ATIME|ATTR_CTIME|ATTR_MTIME)) + xfs_setattr_time(ip, iattr); xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); @@ -1051,8 +1047,22 @@ xfs_vn_fiemap( return 0; } +STATIC int +xfs_vn_tmpfile( + struct inode *dir, + struct dentry *dentry, + umode_t mode) +{ + int error; + + error = xfs_create_tmpfile(XFS_I(dir), dentry, mode); + + return -error; +} + static const struct inode_operations xfs_inode_operations = { .get_acl = xfs_get_acl, + .set_acl = xfs_set_acl, .getattr = xfs_vn_getattr, .setattr = xfs_vn_setattr, .setxattr = generic_setxattr, @@ -1080,6 +1090,7 @@ static const struct inode_operations xfs_dir_inode_operations = { .mknod = xfs_vn_mknod, .rename = xfs_vn_rename, .get_acl = xfs_get_acl, + .set_acl = xfs_set_acl, .getattr = xfs_vn_getattr, .setattr = xfs_vn_setattr, .setxattr = generic_setxattr, @@ -1087,6 +1098,7 @@ static const struct inode_operations xfs_dir_inode_operations = { .removexattr = generic_removexattr, .listxattr = xfs_vn_listxattr, .update_time = xfs_vn_update_time, + .tmpfile = xfs_vn_tmpfile, }; static const struct inode_operations xfs_dir_ci_inode_operations = { @@ -1106,6 +1118,7 @@ static const struct inode_operations xfs_dir_ci_inode_operations = { .mknod = xfs_vn_mknod, .rename = xfs_vn_rename, .get_acl = xfs_get_acl, + .set_acl = xfs_set_acl, .getattr = xfs_vn_getattr, .setattr = xfs_vn_setattr, .setxattr = generic_setxattr, @@ -1113,13 +1126,13 @@ static const struct inode_operations xfs_dir_ci_inode_operations = { .removexattr = generic_removexattr, .listxattr = xfs_vn_listxattr, .update_time = xfs_vn_update_time, + .tmpfile = xfs_vn_tmpfile, }; static const struct inode_operations xfs_symlink_inode_operations = { .readlink = generic_readlink, .follow_link = xfs_vn_follow_link, - .put_link = xfs_vn_put_link, - .get_acl = xfs_get_acl, + .put_link = kfree_put_link, .getattr = xfs_vn_getattr, .setattr = xfs_vn_setattr, .setxattr = generic_setxattr, @@ -1206,6 +1219,7 @@ xfs_setup_inode( xfs_diflags_to_iflags(inode, ip); ip->d_ops = ip->i_mount->m_nondir_inode_ops; + lockdep_set_class(&ip->i_lock.mr_lock, &xfs_nondir_ilock_class); switch (inode->i_mode & S_IFMT) { case S_IFREG: inode->i_op = &xfs_inode_operations; @@ -1213,6 +1227,7 @@ xfs_setup_inode( inode->i_mapping->a_ops = &xfs_address_space_operations; break; case S_IFDIR: + lockdep_set_class(&ip->i_lock.mr_lock, &xfs_dir_ilock_class); if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb)) inode->i_op = &xfs_dir_ci_inode_operations; else diff --git a/fs/xfs/xfs_iops.h b/fs/xfs/xfs_iops.h index d2c5057b5cc4..1c34e4335920 100644 --- a/fs/xfs/xfs_iops.h +++ b/fs/xfs/xfs_iops.h @@ -30,7 +30,7 @@ extern void xfs_setup_inode(struct xfs_inode *); /* * Internal setattr interfaces. */ -#define XFS_ATTR_NOACL 0x01 /* Don't call xfs_acl_chmod */ +#define XFS_ATTR_NOACL 0x01 /* Don't call posix_acl_chmod */ extern int xfs_setattr_nonsize(struct xfs_inode *ip, struct iattr *vap, int flags); diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c index c237ad15d500..f46338285152 100644 --- a/fs/xfs/xfs_itable.c +++ b/fs/xfs/xfs_itable.c @@ -209,9 +209,8 @@ xfs_bulkstat( xfs_inobt_rec_incore_t *irbuf; /* start of irec buffer */ xfs_inobt_rec_incore_t *irbufend; /* end of good irec buffer entries */ xfs_ino_t lastino; /* last inode number returned */ - int nbcluster; /* # of blocks in a cluster */ - int nicluster; /* # of inodes in a cluster */ - int nimask; /* mask for inode clusters */ + int blks_per_cluster; /* # of blocks per cluster */ + int inodes_per_cluster;/* # of inodes per cluster */ int nirbuf; /* size of irbuf */ int rval; /* return value error code */ int tmp; /* result value from btree calls */ @@ -243,11 +242,8 @@ xfs_bulkstat( *done = 0; fmterror = 0; ubufp = ubuffer; - nicluster = mp->m_sb.sb_blocksize >= XFS_INODE_CLUSTER_SIZE(mp) ? - mp->m_sb.sb_inopblock : - (XFS_INODE_CLUSTER_SIZE(mp) >> mp->m_sb.sb_inodelog); - nimask = ~(nicluster - 1); - nbcluster = nicluster >> mp->m_sb.sb_inopblog; + blks_per_cluster = xfs_icluster_size_fsb(mp); + inodes_per_cluster = blks_per_cluster << mp->m_sb.sb_inopblog; irbuf = kmem_zalloc_greedy(&irbsize, PAGE_SIZE, PAGE_SIZE * 4); if (!irbuf) return ENOMEM; @@ -390,12 +386,12 @@ xfs_bulkstat( agbno = XFS_AGINO_TO_AGBNO(mp, r.ir_startino); for (chunkidx = 0; chunkidx < XFS_INODES_PER_CHUNK; - chunkidx += nicluster, - agbno += nbcluster) { - if (xfs_inobt_maskn(chunkidx, nicluster) - & ~r.ir_free) + chunkidx += inodes_per_cluster, + agbno += blks_per_cluster) { + if (xfs_inobt_maskn(chunkidx, + inodes_per_cluster) & ~r.ir_free) xfs_btree_reada_bufs(mp, agno, - agbno, nbcluster, + agbno, blks_per_cluster, &xfs_inode_buf_ops); } blk_finish_plug(&plug); diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h index f9bb590acc0e..825249d2dfc1 100644 --- a/fs/xfs/xfs_linux.h +++ b/fs/xfs/xfs_linux.h @@ -119,6 +119,7 @@ typedef __uint64_t __psunsigned_t; #include "xfs_iops.h" #include "xfs_aops.h" #include "xfs_super.h" +#include "xfs_cksum.h" #include "xfs_buf.h" #include "xfs_message.h" @@ -178,6 +179,7 @@ typedef __uint64_t __psunsigned_t; #define ENOATTR ENODATA /* Attribute not found */ #define EWRONGFS EINVAL /* Mount with wrong filesystem type */ #define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */ +#define EFSBADCRC EBADMSG /* Bad CRC detected */ #define SYNCHRONIZE() barrier() #define __return_address __builtin_return_address(0) diff --git a/fs/xfs/xfs_log.h b/fs/xfs/xfs_log.h index e148719e0a5d..2c4004475e71 100644 --- a/fs/xfs/xfs_log.h +++ b/fs/xfs/xfs_log.h @@ -30,6 +30,52 @@ struct xfs_log_vec { #define XFS_LOG_VEC_ORDERED (-1) +static inline void * +xlog_prepare_iovec(struct xfs_log_vec *lv, struct xfs_log_iovec **vecp, + uint type) +{ + struct xfs_log_iovec *vec = *vecp; + + if (vec) { + ASSERT(vec - lv->lv_iovecp < lv->lv_niovecs); + vec++; + } else { + vec = &lv->lv_iovecp[0]; + } + + vec->i_type = type; + vec->i_addr = lv->lv_buf + lv->lv_buf_len; + + ASSERT(IS_ALIGNED((unsigned long)vec->i_addr, sizeof(uint64_t))); + + *vecp = vec; + return vec->i_addr; +} + +static inline void +xlog_finish_iovec(struct xfs_log_vec *lv, struct xfs_log_iovec *vec, int len) +{ + /* + * We need to make sure the next buffer is naturally aligned for the + * biggest basic data type we put into it. We already accounted for + * this when sizing the buffer. + */ + lv->lv_buf_len += round_up(len, sizeof(uint64_t)); + vec->i_len = len; +} + +static inline void * +xlog_copy_iovec(struct xfs_log_vec *lv, struct xfs_log_iovec **vecp, + uint type, void *data, int len) +{ + void *buf; + + buf = xlog_prepare_iovec(lv, vecp, type); + memcpy(buf, data, len); + xlog_finish_iovec(lv, *vecp, len); + return buf; +} + /* * Structure used to pass callback function and the function's argument * to the log manager. @@ -129,7 +175,7 @@ void xlog_iodone(struct xfs_buf *); struct xlog_ticket *xfs_log_ticket_get(struct xlog_ticket *ticket); void xfs_log_ticket_put(struct xlog_ticket *ticket); -int xfs_log_commit_cil(struct xfs_mount *mp, struct xfs_trans *tp, +void xfs_log_commit_cil(struct xfs_mount *mp, struct xfs_trans *tp, xfs_lsn_t *commit_lsn, int flags); bool xfs_log_item_in_current_chkpt(struct xfs_log_item *lip); diff --git a/fs/xfs/xfs_log_cil.c b/fs/xfs/xfs_log_cil.c index 5eb51fc5eb84..7e5455391176 100644 --- a/fs/xfs/xfs_log_cil.c +++ b/fs/xfs/xfs_log_cil.c @@ -82,36 +82,6 @@ xlog_cil_init_post_recovery( log->l_curr_block); } -STATIC int -xlog_cil_lv_item_format( - struct xfs_log_item *lip, - struct xfs_log_vec *lv) -{ - int index; - char *ptr; - - /* format new vectors into array */ - lip->li_ops->iop_format(lip, lv->lv_iovecp); - - /* copy data into existing array */ - ptr = lv->lv_buf; - for (index = 0; index < lv->lv_niovecs; index++) { - struct xfs_log_iovec *vec = &lv->lv_iovecp[index]; - - memcpy(ptr, vec->i_addr, vec->i_len); - vec->i_addr = ptr; - ptr += vec->i_len; - } - - /* - * some size calculations for log vectors over-estimate, so the caller - * doesn't know the amount of space actually used by the item. Return - * the byte count to the caller so they can check and store it - * appropriately. - */ - return ptr - lv->lv_buf; -} - /* * Prepare the log item for insertion into the CIL. Calculate the difference in * log space and vectors it will consume, and if it is a new item pin it as @@ -232,12 +202,28 @@ xlog_cil_insert_format_items( nbytes = 0; } + /* + * We 64-bit align the length of each iovec so that the start + * of the next one is naturally aligned. We'll need to + * account for that slack space here. Then round nbytes up + * to 64-bit alignment so that the initial buffer alignment is + * easy to calculate and verify. + */ + nbytes += niovecs * sizeof(uint64_t); + nbytes = round_up(nbytes, sizeof(uint64_t)); + /* grab the old item if it exists for reservation accounting */ old_lv = lip->li_lv; - /* calc buffer size */ - buf_size = sizeof(struct xfs_log_vec) + nbytes + - niovecs * sizeof(struct xfs_log_iovec); + /* + * The data buffer needs to start 64-bit aligned, so round up + * that space to ensure we can align it appropriately and not + * overrun the buffer. + */ + buf_size = nbytes + + round_up((sizeof(struct xfs_log_vec) + + niovecs * sizeof(struct xfs_log_iovec)), + sizeof(uint64_t)); /* compare to existing item size */ if (lip->li_lv && buf_size <= lip->li_lv->lv_size) { @@ -254,34 +240,29 @@ xlog_cil_insert_format_items( */ *diff_iovecs -= lv->lv_niovecs; *diff_len -= lv->lv_buf_len; - - /* Ensure the lv is set up according to ->iop_size */ - lv->lv_niovecs = niovecs; - lv->lv_buf = (char *)lv + buf_size - nbytes; - - lv->lv_buf_len = xlog_cil_lv_item_format(lip, lv); - goto insert; + } else { + /* allocate new data chunk */ + lv = kmem_zalloc(buf_size, KM_SLEEP|KM_NOFS); + lv->lv_item = lip; + lv->lv_size = buf_size; + if (ordered) { + /* track as an ordered logvec */ + ASSERT(lip->li_lv == NULL); + lv->lv_buf_len = XFS_LOG_VEC_ORDERED; + goto insert; + } + lv->lv_iovecp = (struct xfs_log_iovec *)&lv[1]; } - /* allocate new data chunk */ - lv = kmem_zalloc(buf_size, KM_SLEEP|KM_NOFS); - lv->lv_item = lip; - lv->lv_size = buf_size; + /* Ensure the lv is set up according to ->iop_size */ lv->lv_niovecs = niovecs; - if (ordered) { - /* track as an ordered logvec */ - ASSERT(lip->li_lv == NULL); - lv->lv_buf_len = XFS_LOG_VEC_ORDERED; - goto insert; - } - - /* The allocated iovec region lies beyond the log vector. */ - lv->lv_iovecp = (struct xfs_log_iovec *)&lv[1]; /* The allocated data region lies beyond the iovec region */ + lv->lv_buf_len = 0; lv->lv_buf = (char *)lv + buf_size - nbytes; + ASSERT(IS_ALIGNED((unsigned long)lv->lv_buf, sizeof(uint64_t))); - lv->lv_buf_len = xlog_cil_lv_item_format(lip, lv); + lip->li_ops->iop_format(lip, lv); insert: ASSERT(lv->lv_buf_len <= nbytes); xfs_cil_prepare_item(log, lv, old_lv, diff_len, diff_iovecs); @@ -518,13 +499,6 @@ xlog_cil_push( cil->xc_ctx = new_ctx; /* - * mirror the new sequence into the cil structure so that we can do - * unlocked checks against the current sequence in log forces without - * risking deferencing a freed context pointer. - */ - cil->xc_current_sequence = new_ctx->sequence; - - /* * The switch is now done, so we can drop the context lock and move out * of a shared context. We can't just go straight to the commit record, * though - we need to synchronise with previous and future commits so @@ -542,8 +516,15 @@ xlog_cil_push( * Hence we need to add this context to the committing context list so * that higher sequences will wait for us to write out a commit record * before they do. + * + * xfs_log_force_lsn requires us to mirror the new sequence into the cil + * structure atomically with the addition of this sequence to the + * committing list. This also ensures that we can do unlocked checks + * against the current sequence in log forces without risking + * deferencing a freed context pointer. */ spin_lock(&cil->xc_push_lock); + cil->xc_current_sequence = new_ctx->sequence; list_add(&ctx->committing, &cil->xc_committing); spin_unlock(&cil->xc_push_lock); up_write(&cil->xc_ctx_lock); @@ -681,8 +662,14 @@ xlog_cil_push_background( } +/* + * xlog_cil_push_now() is used to trigger an immediate CIL push to the sequence + * number that is passed. When it returns, the work will be queued for + * @push_seq, but it won't be completed. The caller is expected to do any + * waiting for push_seq to complete if it is required. + */ static void -xlog_cil_push_foreground( +xlog_cil_push_now( struct xlog *log, xfs_lsn_t push_seq) { @@ -707,10 +694,8 @@ xlog_cil_push_foreground( } cil->xc_push_seq = push_seq; + queue_work(log->l_mp->m_cil_workqueue, &cil->xc_push_work); spin_unlock(&cil->xc_push_lock); - - /* do the push now */ - xlog_cil_push(log); } bool @@ -740,7 +725,7 @@ xlog_cil_empty( * background commit, returns without it held once background commits are * allowed again. */ -int +void xfs_log_commit_cil( struct xfs_mount *mp, struct xfs_trans *tp, @@ -786,7 +771,6 @@ xfs_log_commit_cil( xlog_cil_push_background(log); up_read(&cil->xc_ctx_lock); - return 0; } /* @@ -815,7 +799,8 @@ xlog_cil_force_lsn( * xlog_cil_push() handles racing pushes for the same sequence, * so no need to deal with it here. */ - xlog_cil_push_foreground(log, sequence); +restart: + xlog_cil_push_now(log, sequence); /* * See if we can find a previous sequence still committing. @@ -823,7 +808,6 @@ xlog_cil_force_lsn( * before allowing the force of push_seq to go ahead. Hence block * on commits for those as well. */ -restart: spin_lock(&cil->xc_push_lock); list_for_each_entry(ctx, &cil->xc_committing, committing) { if (ctx->sequence > sequence) @@ -841,6 +825,28 @@ restart: /* found it! */ commit_lsn = ctx->commit_lsn; } + + /* + * The call to xlog_cil_push_now() executes the push in the background. + * Hence by the time we have got here it our sequence may not have been + * pushed yet. This is true if the current sequence still matches the + * push sequence after the above wait loop and the CIL still contains + * dirty objects. + * + * When the push occurs, it will empty the CIL and + * atomically increment the currect sequence past the push sequence and + * move it into the committing list. Of course, if the CIL is clean at + * the time of the push, it won't have pushed the CIL at all, so in that + * case we should try the push for this sequence again from the start + * just in case. + */ + + if (sequence == cil->xc_current_sequence && + !list_empty(&cil->xc_cil)) { + spin_unlock(&cil->xc_push_lock); + goto restart; + } + spin_unlock(&cil->xc_push_lock); return commit_lsn; } diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index eae16920655b..bce53ac81096 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -1654,6 +1654,7 @@ xlog_recover_reorder_trans( int pass) { xlog_recover_item_t *item, *n; + int error = 0; LIST_HEAD(sort_list); LIST_HEAD(cancel_list); LIST_HEAD(buffer_list); @@ -1695,9 +1696,17 @@ xlog_recover_reorder_trans( "%s: unrecognized type of log operation", __func__); ASSERT(0); - return XFS_ERROR(EIO); + /* + * return the remaining items back to the transaction + * item list so they can be freed in caller. + */ + if (!list_empty(&sort_list)) + list_splice_init(&sort_list, &trans->r_itemq); + error = XFS_ERROR(EIO); + goto out; } } +out: ASSERT(list_empty(&sort_list)); if (!list_empty(&buffer_list)) list_splice(&buffer_list, &trans->r_itemq); @@ -1707,7 +1716,7 @@ xlog_recover_reorder_trans( list_splice_tail(&inode_buffer_list, &trans->r_itemq); if (!list_empty(&cancel_list)) list_splice_tail(&cancel_list, &trans->r_itemq); - return 0; + return error; } /* @@ -2517,19 +2526,19 @@ xlog_recover_buffer_pass2( * * Also make sure that only inode buffers with good sizes stay in * the buffer cache. The kernel moves inodes in buffers of 1 block - * or XFS_INODE_CLUSTER_SIZE bytes, whichever is bigger. The inode + * or mp->m_inode_cluster_size bytes, whichever is bigger. The inode * buffers in the log can be a different size if the log was generated * by an older kernel using unclustered inode buffers or a newer kernel * running with a different inode cluster size. Regardless, if the - * the inode buffer size isn't MAX(blocksize, XFS_INODE_CLUSTER_SIZE) - * for *our* value of XFS_INODE_CLUSTER_SIZE, then we need to keep + * the inode buffer size isn't MAX(blocksize, mp->m_inode_cluster_size) + * for *our* value of mp->m_inode_cluster_size, then we need to keep * the buffer out of the buffer cache so that the buffer won't * overlap with future reads of those inodes. */ if (XFS_DINODE_MAGIC == be16_to_cpu(*((__be16 *)xfs_buf_offset(bp, 0))) && (BBTOB(bp->b_io_length) != MAX(log->l_mp->m_sb.sb_blocksize, - (__uint32_t)XFS_INODE_CLUSTER_SIZE(log->l_mp)))) { + (__uint32_t)log->l_mp->m_inode_cluster_size))) { xfs_buf_stale(bp); error = xfs_bwrite(bp); } else { @@ -3202,10 +3211,10 @@ xlog_recover_do_icreate_pass2( } /* existing allocation is fixed value */ - ASSERT(count == XFS_IALLOC_INODES(mp)); - ASSERT(length == XFS_IALLOC_BLOCKS(mp)); - if (count != XFS_IALLOC_INODES(mp) || - length != XFS_IALLOC_BLOCKS(mp)) { + ASSERT(count == mp->m_ialloc_inos); + ASSERT(length == mp->m_ialloc_blks); + if (count != mp->m_ialloc_inos || + length != mp->m_ialloc_blks) { xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad count 2"); return EINVAL; } @@ -3611,8 +3620,10 @@ xlog_recover_process_data( error = XFS_ERROR(EIO); break; } - if (error) + if (error) { + xlog_recover_free_trans(trans); return error; + } } dp += be32_to_cpu(ohead->oh_len); num_logops--; diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index 02df7b408a26..993cb19e7d39 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -282,22 +282,29 @@ xfs_readsb( struct xfs_sb *sbp = &mp->m_sb; int error; int loud = !(flags & XFS_MFSI_QUIET); + const struct xfs_buf_ops *buf_ops; ASSERT(mp->m_sb_bp == NULL); ASSERT(mp->m_ddev_targp != NULL); /* + * For the initial read, we must guess at the sector + * size based on the block device. It's enough to + * get the sb_sectsize out of the superblock and + * then reread with the proper length. + * We don't verify it yet, because it may not be complete. + */ + sector_size = xfs_getsize_buftarg(mp->m_ddev_targp); + buf_ops = NULL; + + /* * Allocate a (locked) buffer to hold the superblock. * This will be kept around at all times to optimize * access to the superblock. */ - sector_size = xfs_getsize_buftarg(mp->m_ddev_targp); - reread: bp = xfs_buf_read_uncached(mp->m_ddev_targp, XFS_SB_DADDR, - BTOBB(sector_size), 0, - loud ? &xfs_sb_buf_ops - : &xfs_sb_quiet_buf_ops); + BTOBB(sector_size), 0, buf_ops); if (!bp) { if (loud) xfs_warn(mp, "SB buffer read failed"); @@ -307,6 +314,9 @@ reread: error = bp->b_error; if (loud) xfs_warn(mp, "SB validate failed with error %d.", error); + /* bad CRC means corrupted metadata */ + if (error == EFSBADCRC) + error = EFSCORRUPTED; goto release_buf; } @@ -328,12 +338,13 @@ reread: } /* - * If device sector size is smaller than the superblock size, - * re-read the superblock so the buffer is correctly sized. + * Re-read the superblock so the buffer is correctly sized, + * and properly verified. */ - if (sector_size < sbp->sb_sectsize) { + if (buf_ops == NULL) { xfs_buf_relse(bp); sector_size = sbp->sb_sectsize; + buf_ops = loud ? &xfs_sb_buf_ops : &xfs_sb_quiet_buf_ops; goto reread; } diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c index dd88f0e27bd8..348e4d2ed6e6 100644 --- a/fs/xfs/xfs_qm.c +++ b/fs/xfs/xfs_qm.c @@ -1222,16 +1222,18 @@ xfs_qm_dqiterate( lblkno = 0; maxlblkcnt = XFS_B_TO_FSB(mp, mp->m_super->s_maxbytes); do { + uint lock_mode; + nmaps = XFS_DQITER_MAP_SIZE; /* * We aren't changing the inode itself. Just changing * some of its data. No new blocks are added here, and * the inode is never added to the transaction. */ - xfs_ilock(qip, XFS_ILOCK_SHARED); + lock_mode = xfs_ilock_data_map_shared(qip); error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno, map, &nmaps, 0); - xfs_iunlock(qip, XFS_ILOCK_SHARED); + xfs_iunlock(qip, lock_mode); if (error) break; diff --git a/fs/xfs/xfs_qm.h b/fs/xfs/xfs_qm.h index a788b66a5cb1..797fd4636273 100644 --- a/fs/xfs/xfs_qm.h +++ b/fs/xfs/xfs_qm.h @@ -20,13 +20,29 @@ #include "xfs_dquot_item.h" #include "xfs_dquot.h" -#include "xfs_quota_priv.h" struct xfs_inode; extern struct kmem_zone *xfs_qm_dqtrxzone; /* + * Number of bmaps that we ask from bmapi when doing a quotacheck. + * We make this restriction to keep the memory usage to a minimum. + */ +#define XFS_DQITER_MAP_SIZE 10 + +#define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \ + !dqp->q_core.d_blk_hardlimit && \ + !dqp->q_core.d_blk_softlimit && \ + !dqp->q_core.d_rtb_hardlimit && \ + !dqp->q_core.d_rtb_softlimit && \ + !dqp->q_core.d_ino_hardlimit && \ + !dqp->q_core.d_ino_softlimit && \ + !dqp->q_core.d_bcount && \ + !dqp->q_core.d_rtbcount && \ + !dqp->q_core.d_icount) + +/* * This defines the unit of allocation of dquots. * Currently, it is just one file system block, and a 4K blk contains 30 * (136 * 30 = 4080) dquots. It's probably not worth trying to make diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c index 437c9198031a..3daf5ea1eb8d 100644 --- a/fs/xfs/xfs_qm_syscalls.c +++ b/fs/xfs/xfs_qm_syscalls.c @@ -278,7 +278,7 @@ xfs_qm_scall_trunc_qfiles( xfs_mount_t *mp, uint flags) { - int error = 0, error2 = 0; + int error; if (!xfs_sb_version_hasquota(&mp->m_sb) || flags == 0) { xfs_debug(mp, "%s: flags=%x m_qflags=%x", @@ -286,14 +286,20 @@ xfs_qm_scall_trunc_qfiles( return XFS_ERROR(EINVAL); } - if (flags & XFS_DQ_USER) + if (flags & XFS_DQ_USER) { error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_uquotino); - if (flags & XFS_DQ_GROUP) - error2 = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_gquotino); + if (error) + return error; + } + if (flags & XFS_DQ_GROUP) { + error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_gquotino); + if (error) + return error; + } if (flags & XFS_DQ_PROJ) - error2 = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_pquotino); + error = xfs_qm_scall_trunc_qfile(mp, mp->m_sb.sb_pquotino); - return error ? error : error2; + return error; } /* diff --git a/fs/xfs/xfs_quota_priv.h b/fs/xfs/xfs_quota_priv.h deleted file mode 100644 index 6d86219d93da..000000000000 --- a/fs/xfs/xfs_quota_priv.h +++ /dev/null @@ -1,42 +0,0 @@ -/* - * Copyright (c) 2000-2003 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_QUOTA_PRIV_H__ -#define __XFS_QUOTA_PRIV_H__ - -/* - * Number of bmaps that we ask from bmapi when doing a quotacheck. - * We make this restriction to keep the memory usage to a minimum. - */ -#define XFS_DQITER_MAP_SIZE 10 - -#define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \ - !dqp->q_core.d_blk_hardlimit && \ - !dqp->q_core.d_blk_softlimit && \ - !dqp->q_core.d_rtb_hardlimit && \ - !dqp->q_core.d_rtb_softlimit && \ - !dqp->q_core.d_ino_hardlimit && \ - !dqp->q_core.d_ino_softlimit && \ - !dqp->q_core.d_bcount && \ - !dqp->q_core.d_rtbcount && \ - !dqp->q_core.d_icount) - -#define DQFLAGTO_TYPESTR(d) (((d)->dq_flags & XFS_DQ_USER) ? "USR" : \ - (((d)->dq_flags & XFS_DQ_GROUP) ? "GRP" : \ - (((d)->dq_flags & XFS_DQ_PROJ) ? "PRJ":"???"))) - -#endif /* __XFS_QUOTA_PRIV_H__ */ diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c index a6a76b2b6a85..ec5ca65c6211 100644 --- a/fs/xfs/xfs_rtalloc.c +++ b/fs/xfs/xfs_rtalloc.c @@ -842,7 +842,7 @@ xfs_growfs_rt_alloc( /* * Reserve space & log for one extent added to the file. */ - error = xfs_trans_reserve(tp, &M_RES(mp)->tr_growdata, + error = xfs_trans_reserve(tp, &M_RES(mp)->tr_growrtalloc, resblks, 0); if (error) goto error_cancel; diff --git a/fs/xfs/xfs_sb.c b/fs/xfs/xfs_sb.c index b7c9aea77f8f..0c0e41bbe4e3 100644 --- a/fs/xfs/xfs_sb.c +++ b/fs/xfs/xfs_sb.c @@ -288,6 +288,7 @@ xfs_mount_validate_sb( sbp->sb_inodelog < XFS_DINODE_MIN_LOG || sbp->sb_inodelog > XFS_DINODE_MAX_LOG || sbp->sb_inodesize != (1 << sbp->sb_inodelog) || + sbp->sb_inopblock != howmany(sbp->sb_blocksize,sbp->sb_inodesize) || (sbp->sb_blocklog - sbp->sb_inodelog != sbp->sb_inopblog) || (sbp->sb_rextsize * sbp->sb_blocksize > XFS_MAX_RTEXTSIZE) || (sbp->sb_rextsize * sbp->sb_blocksize < XFS_MIN_RTEXTSIZE) || @@ -295,8 +296,7 @@ xfs_mount_validate_sb( sbp->sb_dblocks == 0 || sbp->sb_dblocks > XFS_MAX_DBLOCKS(sbp) || sbp->sb_dblocks < XFS_MIN_DBLOCKS(sbp))) { - XFS_CORRUPTION_ERROR("SB sanity check failed", - XFS_ERRLEVEL_LOW, mp, sbp); + xfs_notice(mp, "SB sanity check failed"); return XFS_ERROR(EFSCORRUPTED); } @@ -611,12 +611,11 @@ xfs_sb_read_verify( XFS_SB_VERSION_5) || dsb->sb_crc != 0)) { - if (!xfs_verify_cksum(bp->b_addr, be16_to_cpu(dsb->sb_sectsize), - offsetof(struct xfs_sb, sb_crc))) { + if (!xfs_buf_verify_cksum(bp, XFS_SB_CRC_OFF)) { /* Only fail bad secondaries on a known V5 filesystem */ - if (bp->b_bn != XFS_SB_DADDR && + if (bp->b_bn == XFS_SB_DADDR || xfs_sb_version_hascrc(&mp->m_sb)) { - error = EFSCORRUPTED; + error = EFSBADCRC; goto out_error; } } @@ -625,10 +624,9 @@ xfs_sb_read_verify( out_error: if (error) { - if (error != EWRONGFS) - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, - mp, bp->b_addr); xfs_buf_ioerror(bp, error); + if (error == EFSCORRUPTED || error == EFSBADCRC) + xfs_verifier_error(bp); } } @@ -644,7 +642,6 @@ xfs_sb_quiet_read_verify( { struct xfs_dsb *dsb = XFS_BUF_TO_SBP(bp); - if (dsb->sb_magicnum == cpu_to_be32(XFS_SB_MAGIC)) { /* XFS filesystem, verify noisily! */ xfs_sb_read_verify(bp); @@ -664,9 +661,8 @@ xfs_sb_write_verify( error = xfs_sb_verify(bp, false); if (error) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, - mp, bp->b_addr); xfs_buf_ioerror(bp, error); + xfs_verifier_error(bp); return; } @@ -676,8 +672,7 @@ xfs_sb_write_verify( if (bip) XFS_BUF_TO_SBP(bp)->sb_lsn = cpu_to_be64(bip->bli_item.li_lsn); - xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), - offsetof(struct xfs_sb, sb_crc)); + xfs_buf_update_cksum(bp, XFS_SB_CRC_OFF); } const struct xfs_buf_ops xfs_sb_buf_ops = { diff --git a/fs/xfs/xfs_sb.h b/fs/xfs/xfs_sb.h index 35061d4b614c..f7b2fe77c5a5 100644 --- a/fs/xfs/xfs_sb.h +++ b/fs/xfs/xfs_sb.h @@ -182,6 +182,8 @@ typedef struct xfs_sb { /* must be padded to 64 bit alignment */ } xfs_sb_t; +#define XFS_SB_CRC_OFF offsetof(struct xfs_sb, sb_crc) + /* * Superblock - on disk version. Must match the in core version above. * Must be padded to 64 bit alignment. diff --git a/fs/xfs/xfs_shared.h b/fs/xfs/xfs_shared.h index 8c5035a13df1..4484e5151395 100644 --- a/fs/xfs/xfs_shared.h +++ b/fs/xfs/xfs_shared.h @@ -104,7 +104,8 @@ extern const struct xfs_buf_ops xfs_symlink_buf_ops; #define XFS_TRANS_SB_COUNT 41 #define XFS_TRANS_CHECKPOINT 42 #define XFS_TRANS_ICREATE 43 -#define XFS_TRANS_TYPE_MAX 43 +#define XFS_TRANS_CREATE_TMPFILE 44 +#define XFS_TRANS_TYPE_MAX 44 /* new transaction types need to be reflected in xfs_logprint(8) */ #define XFS_TRANS_TYPES \ @@ -112,6 +113,7 @@ extern const struct xfs_buf_ops xfs_symlink_buf_ops; { XFS_TRANS_SETATTR_SIZE, "SETATTR_SIZE" }, \ { XFS_TRANS_INACTIVE, "INACTIVE" }, \ { XFS_TRANS_CREATE, "CREATE" }, \ + { XFS_TRANS_CREATE_TMPFILE, "CREATE_TMPFILE" }, \ { XFS_TRANS_CREATE_TRUNC, "CREATE_TRUNC" }, \ { XFS_TRANS_TRUNCATE_FILE, "TRUNCATE_FILE" }, \ { XFS_TRANS_REMOVE, "REMOVE" }, \ diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index f317488263dd..205376776377 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -913,7 +913,7 @@ xfs_flush_inodes( struct super_block *sb = mp->m_super; if (down_read_trylock(&sb->s_umount)) { - sync_inodes_sb(sb, jiffies); + sync_inodes_sb(sb); up_read(&sb->s_umount); } } @@ -996,7 +996,7 @@ xfs_fs_evict_inode( trace_xfs_evict_inode(ip); - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); clear_inode(inode); XFS_STATS_INC(vn_rele); XFS_STATS_INC(vn_remove); @@ -1197,6 +1197,7 @@ xfs_fs_remount( char *p; int error; + sync_filesystem(sb); while ((p = strsep(&options, ",")) != NULL) { int token; diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c index 14e58f2c96bd..52979aa90986 100644 --- a/fs/xfs/xfs_symlink.c +++ b/fs/xfs/xfs_symlink.c @@ -80,6 +80,10 @@ xfs_readlink_bmap( if (error) { xfs_buf_ioerror_alert(bp, __func__); xfs_buf_relse(bp); + + /* bad CRC means corrupted metadata */ + if (error == EFSBADCRC) + error = EFSCORRUPTED; goto out; } byte_cnt = XFS_SYMLINK_BUF_SPACE(mp, byte_cnt); @@ -208,10 +212,7 @@ xfs_symlink( return XFS_ERROR(ENAMETOOLONG); udqp = gdqp = NULL; - if (dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) - prid = xfs_get_projid(dp); - else - prid = XFS_PROJID_DEFAULT; + prid = xfs_get_initial_prid(dp); /* * Make sure that we have allocated dquot(s) on disk. diff --git a/fs/xfs/xfs_symlink_remote.c b/fs/xfs/xfs_symlink_remote.c index bf59a2b45f8c..9b32052ff65e 100644 --- a/fs/xfs/xfs_symlink_remote.c +++ b/fs/xfs/xfs_symlink_remote.c @@ -133,12 +133,13 @@ xfs_symlink_read_verify( if (!xfs_sb_version_hascrc(&mp->m_sb)) return; - if (!xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - offsetof(struct xfs_dsymlink_hdr, sl_crc)) || - !xfs_symlink_verify(bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); + if (!xfs_buf_verify_cksum(bp, XFS_SYMLINK_CRC_OFF)) + xfs_buf_ioerror(bp, EFSBADCRC); + else if (!xfs_symlink_verify(bp)) xfs_buf_ioerror(bp, EFSCORRUPTED); - } + + if (bp->b_error) + xfs_verifier_error(bp); } static void @@ -153,8 +154,8 @@ xfs_symlink_write_verify( return; if (!xfs_symlink_verify(bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_verifier_error(bp); return; } @@ -162,8 +163,7 @@ xfs_symlink_write_verify( struct xfs_dsymlink_hdr *dsl = bp->b_addr; dsl->sl_lsn = cpu_to_be64(bip->bli_item.li_lsn); } - xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), - offsetof(struct xfs_dsymlink_hdr, sl_crc)); + xfs_buf_update_cksum(bp, XFS_SYMLINK_CRC_OFF); } const struct xfs_buf_ops xfs_symlink_buf_ops = { diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index 425dfa45b9a0..a4ae41c179a8 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -603,6 +603,7 @@ DEFINE_INODE_EVENT(xfs_readlink); DEFINE_INODE_EVENT(xfs_inactive_symlink); DEFINE_INODE_EVENT(xfs_alloc_file_space); DEFINE_INODE_EVENT(xfs_free_file_space); +DEFINE_INODE_EVENT(xfs_collapse_file_space); DEFINE_INODE_EVENT(xfs_readdir); #ifdef CONFIG_XFS_POSIX_ACL DEFINE_INODE_EVENT(xfs_get_acl); diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c index c812c5c060de..54a57326d85b 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -887,12 +887,7 @@ xfs_trans_commit( xfs_trans_apply_sb_deltas(tp); xfs_trans_apply_dquot_deltas(tp); - error = xfs_log_commit_cil(mp, tp, &commit_lsn, flags); - if (error == ENOMEM) { - xfs_force_shutdown(mp, SHUTDOWN_LOG_IO_ERROR); - error = XFS_ERROR(EIO); - goto out_unreserve; - } + xfs_log_commit_cil(mp, tp, &commit_lsn, flags); current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); xfs_trans_free(tp); @@ -902,10 +897,7 @@ xfs_trans_commit( * log out now and wait for it. */ if (sync) { - if (!error) { - error = _xfs_log_force_lsn(mp, commit_lsn, - XFS_LOG_SYNC, NULL); - } + error = _xfs_log_force_lsn(mp, commit_lsn, XFS_LOG_SYNC, NULL); XFS_STATS_INC(xs_trans_sync); } else { XFS_STATS_INC(xs_trans_async); diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h index 9b96d35e483d..b5bc1ab3c4da 100644 --- a/fs/xfs/xfs_trans.h +++ b/fs/xfs/xfs_trans.h @@ -64,7 +64,7 @@ typedef struct xfs_log_item { struct xfs_item_ops { void (*iop_size)(xfs_log_item_t *, int *, int *); - void (*iop_format)(xfs_log_item_t *, struct xfs_log_iovec *); + void (*iop_format)(xfs_log_item_t *, struct xfs_log_vec *); void (*iop_pin)(xfs_log_item_t *); void (*iop_unpin)(xfs_log_item_t *, int remove); uint (*iop_push)(struct xfs_log_item *, struct list_head *); diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c index 647b6f1d8923..b8eef0549f3f 100644 --- a/fs/xfs/xfs_trans_buf.c +++ b/fs/xfs/xfs_trans_buf.c @@ -275,6 +275,10 @@ xfs_trans_read_buf_map( XFS_BUF_UNDONE(bp); xfs_buf_stale(bp); xfs_buf_relse(bp); + + /* bad CRC means corrupted metadata */ + if (error == EFSBADCRC) + error = EFSCORRUPTED; return error; } #ifdef DEBUG @@ -338,6 +342,9 @@ xfs_trans_read_buf_map( if (tp->t_flags & XFS_TRANS_DIRTY) xfs_force_shutdown(tp->t_mountp, SHUTDOWN_META_IO_ERROR); + /* bad CRC means corrupted metadata */ + if (error == EFSBADCRC) + error = EFSCORRUPTED; return error; } } @@ -375,6 +382,10 @@ xfs_trans_read_buf_map( if (tp->t_flags & XFS_TRANS_DIRTY) xfs_force_shutdown(tp->t_mountp, SHUTDOWN_META_IO_ERROR); xfs_buf_relse(bp); + + /* bad CRC means corrupted metadata */ + if (error == EFSBADCRC) + error = EFSCORRUPTED; return error; } #ifdef DEBUG diff --git a/fs/xfs/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c index cd2a10e15d3a..41172861e857 100644 --- a/fs/xfs/xfs_trans_dquot.c +++ b/fs/xfs/xfs_trans_dquot.c @@ -295,8 +295,8 @@ xfs_trans_mod_dquot( /* * Given an array of dqtrx structures, lock all the dquots associated and join * them to the transaction, provided they have been modified. We know that the - * highest number of dquots of one type - usr, grp OR prj - involved in a - * transaction is 2 so we don't need to make this very generic. + * highest number of dquots of one type - usr, grp and prj - involved in a + * transaction is 3 so we don't need to make this very generic. */ STATIC void xfs_trans_dqlockedjoin( diff --git a/fs/xfs/xfs_trans_resv.c b/fs/xfs/xfs_trans_resv.c index 2fd59c0dae66..ae368165244d 100644 --- a/fs/xfs/xfs_trans_resv.c +++ b/fs/xfs/xfs_trans_resv.c @@ -81,20 +81,28 @@ xfs_calc_buf_res( * on disk. Hence we need an inode reservation function that calculates all this * correctly. So, we log: * - * - log op headers for object + * - 4 log op headers for object + * - for the ilf, the inode core and 2 forks * - inode log format object - * - the entire inode contents (core + 2 forks) - * - two bmap btree block headers + * - the inode core + * - two inode forks containing bmap btree root blocks. + * - the btree data contained by both forks will fit into the inode size, + * hence when combined with the inode core above, we have a total of the + * actual inode size. + * - the BMBT headers need to be accounted separately, as they are + * additional to the records and pointers that fit inside the inode + * forks. */ STATIC uint xfs_calc_inode_res( struct xfs_mount *mp, uint ninodes) { - return ninodes * (sizeof(struct xlog_op_header) + - sizeof(struct xfs_inode_log_format) + - mp->m_sb.sb_inodesize + - 2 * XFS_BMBT_BLOCK_LEN(mp)); + return ninodes * + (4 * sizeof(struct xlog_op_header) + + sizeof(struct xfs_inode_log_format) + + mp->m_sb.sb_inodesize + + 2 * XFS_BMBT_BLOCK_LEN(mp)); } /* @@ -174,7 +182,7 @@ xfs_calc_itruncate_reservation( xfs_calc_buf_res(5, 0) + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), XFS_FSB_TO_B(mp, 1)) + - xfs_calc_buf_res(2 + XFS_IALLOC_BLOCKS(mp) + + xfs_calc_buf_res(2 + mp->m_ialloc_blks + mp->m_in_maxlevels, 0))); } @@ -204,6 +212,19 @@ xfs_calc_rename_reservation( } /* + * For removing an inode from unlinked list at first, we can modify: + * the agi hash list and counters: sector size + * the on disk inode before ours in the agi hash list: inode cluster size + */ +STATIC uint +xfs_calc_iunlink_remove_reservation( + struct xfs_mount *mp) +{ + return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + + max_t(uint, XFS_FSB_TO_B(mp, 1), mp->m_inode_cluster_size); +} + +/* * For creating a link to an inode: * the parent directory inode: inode size * the linked inode: inode size @@ -220,6 +241,7 @@ xfs_calc_link_reservation( struct xfs_mount *mp) { return XFS_DQUOT_LOGRES(mp) + + xfs_calc_iunlink_remove_reservation(mp) + MAX((xfs_calc_inode_res(mp, 2) + xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), XFS_FSB_TO_B(mp, 1))), @@ -229,6 +251,18 @@ xfs_calc_link_reservation( } /* + * For adding an inode to unlinked list we can modify: + * the agi hash list: sector size + * the unlinked inode: inode size + */ +STATIC uint +xfs_calc_iunlink_add_reservation(xfs_mount_t *mp) +{ + return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + + xfs_calc_inode_res(mp, 1); +} + +/* * For removing a directory entry we can modify: * the parent directory inode: inode size * the removed inode: inode size @@ -245,10 +279,11 @@ xfs_calc_remove_reservation( struct xfs_mount *mp) { return XFS_DQUOT_LOGRES(mp) + - MAX((xfs_calc_inode_res(mp, 2) + + xfs_calc_iunlink_add_reservation(mp) + + MAX((xfs_calc_inode_res(mp, 1) + xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), XFS_FSB_TO_B(mp, 1))), - (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + + (xfs_calc_buf_res(4, mp->m_sb.sb_sectsize) + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), XFS_FSB_TO_B(mp, 1)))); } @@ -282,7 +317,7 @@ xfs_calc_create_resv_modify( * For create we can allocate some inodes giving: * the agi and agf of the ag getting the new inodes: 2 * sectorsize * the superblock for the nlink flag: sector size - * the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize + * the inode blocks allocated: mp->m_ialloc_blks * blocksize * the inode btree: max depth * blocksize * the allocation btrees: 2 trees * (max depth - 1) * block size */ @@ -292,7 +327,7 @@ xfs_calc_create_resv_alloc( { return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + mp->m_sb.sb_sectsize + - xfs_calc_buf_res(XFS_IALLOC_BLOCKS(mp), XFS_FSB_TO_B(mp, 1)) + + xfs_calc_buf_res(mp->m_ialloc_blks, XFS_FSB_TO_B(mp, 1)) + xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), XFS_FSB_TO_B(mp, 1)); @@ -343,6 +378,20 @@ xfs_calc_create_reservation( } +STATIC uint +xfs_calc_create_tmpfile_reservation( + struct xfs_mount *mp) +{ + uint res = XFS_DQUOT_LOGRES(mp); + + if (xfs_sb_version_hascrc(&mp->m_sb)) + res += xfs_calc_icreate_resv_alloc(mp); + else + res += xfs_calc_create_resv_alloc(mp); + + return res + xfs_calc_iunlink_add_reservation(mp); +} + /* * Making a new directory is the same as creating a new file. */ @@ -383,11 +432,11 @@ xfs_calc_ifree_reservation( { return XFS_DQUOT_LOGRES(mp) + xfs_calc_inode_res(mp, 1) + - xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + + xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + xfs_calc_buf_res(1, XFS_FSB_TO_B(mp, 1)) + - max_t(uint, XFS_FSB_TO_B(mp, 1), XFS_INODE_CLUSTER_SIZE(mp)) + + xfs_calc_iunlink_remove_reservation(mp) + xfs_calc_buf_res(1, 0) + - xfs_calc_buf_res(2 + XFS_IALLOC_BLOCKS(mp) + + xfs_calc_buf_res(2 + mp->m_ialloc_blks + mp->m_in_maxlevels, 0) + xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), XFS_FSB_TO_B(mp, 1)); @@ -644,15 +693,14 @@ xfs_calc_qm_setqlim_reservation( /* * Allocating quota on disk if needed. - * the write transaction log space: M_RES(mp)->tr_write.tr_logres + * the write transaction log space for quota file extent allocation * the unit of quota allocation: one system block size */ STATIC uint xfs_calc_qm_dqalloc_reservation( struct xfs_mount *mp) { - ASSERT(M_RES(mp)->tr_write.tr_logres); - return M_RES(mp)->tr_write.tr_logres + + return xfs_calc_write_reservation(mp) + xfs_calc_buf_res(1, XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB) - 1); } @@ -729,6 +777,11 @@ xfs_trans_resv_calc( resp->tr_create.tr_logcount = XFS_CREATE_LOG_COUNT; resp->tr_create.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + resp->tr_create_tmpfile.tr_logres = + xfs_calc_create_tmpfile_reservation(mp); + resp->tr_create_tmpfile.tr_logcount = XFS_CREATE_TMPFILE_LOG_COUNT; + resp->tr_create_tmpfile.tr_logflags |= XFS_TRANS_PERM_LOG_RES; + resp->tr_mkdir.tr_logres = xfs_calc_mkdir_reservation(mp); resp->tr_mkdir.tr_logcount = XFS_MKDIR_LOG_COUNT; resp->tr_mkdir.tr_logflags |= XFS_TRANS_PERM_LOG_RES; @@ -784,7 +837,6 @@ xfs_trans_resv_calc( /* The following transaction are logged in logical format */ resp->tr_ichange.tr_logres = xfs_calc_ichange_reservation(mp); resp->tr_growdata.tr_logres = xfs_calc_growdata_reservation(mp); - resp->tr_swrite.tr_logres = xfs_calc_swrite_reservation(mp); resp->tr_fsyncts.tr_logres = xfs_calc_swrite_reservation(mp); resp->tr_writeid.tr_logres = xfs_calc_writeid_reservation(mp); resp->tr_attrsetrt.tr_logres = xfs_calc_attrsetrt_reservation(mp); diff --git a/fs/xfs/xfs_trans_resv.h b/fs/xfs/xfs_trans_resv.h index de7de9aaad8a..1097d14cd583 100644 --- a/fs/xfs/xfs_trans_resv.h +++ b/fs/xfs/xfs_trans_resv.h @@ -38,11 +38,11 @@ struct xfs_trans_resv { struct xfs_trans_res tr_remove; /* unlink trans */ struct xfs_trans_res tr_symlink; /* symlink trans */ struct xfs_trans_res tr_create; /* create trans */ + struct xfs_trans_res tr_create_tmpfile; /* create O_TMPFILE trans */ struct xfs_trans_res tr_mkdir; /* mkdir trans */ struct xfs_trans_res tr_ifree; /* inode free trans */ struct xfs_trans_res tr_ichange; /* inode update trans */ struct xfs_trans_res tr_growdata; /* fs data section grow trans */ - struct xfs_trans_res tr_swrite; /* sync write inode trans */ struct xfs_trans_res tr_addafork; /* add inode attr fork trans */ struct xfs_trans_res tr_writeid; /* write setuid/setgid file */ struct xfs_trans_res tr_attrinval; /* attr fork buffer @@ -100,6 +100,7 @@ struct xfs_trans_resv { #define XFS_ITRUNCATE_LOG_COUNT 2 #define XFS_INACTIVE_LOG_COUNT 2 #define XFS_CREATE_LOG_COUNT 2 +#define XFS_CREATE_TMPFILE_LOG_COUNT 2 #define XFS_MKDIR_LOG_COUNT 3 #define XFS_SYMLINK_LOG_COUNT 3 #define XFS_REMOVE_LOG_COUNT 2 diff --git a/fs/xfs/xfs_trans_space.h b/fs/xfs/xfs_trans_space.h index 7d2c920dfb9c..af5dbe06cb65 100644 --- a/fs/xfs/xfs_trans_space.h +++ b/fs/xfs/xfs_trans_space.h @@ -47,7 +47,7 @@ #define XFS_DIRREMOVE_SPACE_RES(mp) \ XFS_DAREMOVE_SPACE_RES(mp, XFS_DATA_FORK) #define XFS_IALLOC_SPACE_RES(mp) \ - (XFS_IALLOC_BLOCKS(mp) + (mp)->m_in_maxlevels - 1) + ((mp)->m_ialloc_blks + (mp)->m_in_maxlevels - 1) /* * Space reservation values for various transactions. diff --git a/fs/xfs/xfs_vnode.h b/fs/xfs/xfs_vnode.h index 3e8e797c6d11..e8a77383c0d5 100644 --- a/fs/xfs/xfs_vnode.h +++ b/fs/xfs/xfs_vnode.h @@ -35,15 +35,6 @@ struct attrlist_cursor_kern; { IO_INVIS, "INVIS"} /* - * Flush/Invalidate options for vop_toss/flush/flushinval_pages. - */ -#define FI_NONE 0 /* none */ -#define FI_REMAPF 1 /* Do a remapf prior to the operation */ -#define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation. - Prevent VM access to the pages until - the operation completes. */ - -/* * Some useful predicates. */ #define VN_MAPPED(vp) mapping_mapped(vp->i_mapping) diff --git a/fs/xfs/xfs_xattr.c b/fs/xfs/xfs_xattr.c index 9d479073ba41..78ed92a46fdd 100644 --- a/fs/xfs/xfs_xattr.c +++ b/fs/xfs/xfs_xattr.c @@ -102,8 +102,8 @@ const struct xattr_handler *xfs_xattr_handlers[] = { &xfs_xattr_trusted_handler, &xfs_xattr_security_handler, #ifdef CONFIG_XFS_POSIX_ACL - &xfs_xattr_acl_access_handler, - &xfs_xattr_acl_default_handler, + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, #endif NULL }; 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