diff options
Diffstat (limited to 'fs/ubifs')
| -rw-r--r-- | fs/ubifs/commit.c | 4 | ||||
| -rw-r--r-- | fs/ubifs/file.c | 6 | ||||
| -rw-r--r-- | fs/ubifs/gc.c | 3 | ||||
| -rw-r--r-- | fs/ubifs/io.c | 16 | ||||
| -rw-r--r-- | fs/ubifs/journal.c | 3 | ||||
| -rw-r--r-- | fs/ubifs/log.c | 4 | ||||
| -rw-r--r-- | fs/ubifs/master.c | 3 | ||||
| -rw-r--r-- | fs/ubifs/misc.h | 9 | ||||
| -rw-r--r-- | fs/ubifs/shrinker.c | 2 | ||||
| -rw-r--r-- | fs/ubifs/super.c | 14 | ||||
| -rw-r--r-- | fs/ubifs/ubifs.h | 4 |
11 files changed, 44 insertions, 24 deletions
diff --git a/fs/ubifs/commit.c b/fs/ubifs/commit.c index 37fa7ed062d8..712432789fb8 100644 --- a/fs/ubifs/commit.c +++ b/fs/ubifs/commit.c @@ -63,7 +63,9 @@ static int do_commit(struct ubifs_info *c) struct ubifs_lp_stats lst; dbg_cmt("start"); - if (c->ro_media) { + ubifs_assert(!c->ro_media); + + if (c->ro_error) { err = -EROFS; goto out_up; } diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index 03ae894c45de..c6bc51c9f07c 100644 --- a/fs/ubifs/file.c +++ b/fs/ubifs/file.c @@ -433,8 +433,9 @@ static int ubifs_write_begin(struct file *file, struct address_space *mapping, struct page *page; ubifs_assert(ubifs_inode(inode)->ui_size == inode->i_size); + ubifs_assert(!c->ro_media); - if (unlikely(c->ro_media)) + if (unlikely(c->ro_error)) return -EROFS; /* Try out the fast-path part first */ @@ -1440,8 +1441,9 @@ static int ubifs_vm_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vm dbg_gen("ino %lu, pg %lu, i_size %lld", inode->i_ino, page->index, i_size_read(inode)); ubifs_assert(!(inode->i_sb->s_flags & MS_RDONLY)); + ubifs_assert(!c->ro_media); - if (unlikely(c->ro_media)) + if (unlikely(c->ro_error)) return VM_FAULT_SIGBUS; /* -EROFS */ /* diff --git a/fs/ubifs/gc.c b/fs/ubifs/gc.c index 396f24a30af9..d927196d730b 100644 --- a/fs/ubifs/gc.c +++ b/fs/ubifs/gc.c @@ -616,13 +616,14 @@ int ubifs_garbage_collect(struct ubifs_info *c, int anyway) struct ubifs_wbuf *wbuf = &c->jheads[GCHD].wbuf; ubifs_assert_cmt_locked(c); + ubifs_assert(!c->ro_media); if (ubifs_gc_should_commit(c)) return -EAGAIN; mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead); - if (c->ro_media) { + if (c->ro_error) { ret = -EROFS; goto out_unlock; } diff --git a/fs/ubifs/io.c b/fs/ubifs/io.c index 9432431bf595..18a4b8d7c844 100644 --- a/fs/ubifs/io.c +++ b/fs/ubifs/io.c @@ -61,8 +61,8 @@ */ void ubifs_ro_mode(struct ubifs_info *c, int err) { - if (!c->ro_media) { - c->ro_media = 1; + if (!c->ro_error) { + c->ro_error = 1; c->no_chk_data_crc = 0; c->vfs_sb->s_flags |= MS_RDONLY; ubifs_warn("switched to read-only mode, error %d", err); @@ -359,8 +359,9 @@ int ubifs_wbuf_sync_nolock(struct ubifs_wbuf *wbuf) ubifs_assert(!(c->vfs_sb->s_flags & MS_RDONLY)); ubifs_assert(!(wbuf->avail & 7)); ubifs_assert(wbuf->offs + c->min_io_size <= c->leb_size); + ubifs_assert(!c->ro_media); - if (c->ro_media) + if (c->ro_error) return -EROFS; ubifs_pad(c, wbuf->buf + wbuf->used, wbuf->avail); @@ -440,11 +441,12 @@ int ubifs_bg_wbufs_sync(struct ubifs_info *c) { int err, i; + ubifs_assert(!c->ro_media); if (!c->need_wbuf_sync) return 0; c->need_wbuf_sync = 0; - if (c->ro_media) { + if (c->ro_error) { err = -EROFS; goto out_timers; } @@ -519,6 +521,7 @@ int ubifs_wbuf_write_nolock(struct ubifs_wbuf *wbuf, void *buf, int len) ubifs_assert(!(wbuf->offs & 7) && wbuf->offs <= c->leb_size); ubifs_assert(wbuf->avail > 0 && wbuf->avail <= c->min_io_size); ubifs_assert(mutex_is_locked(&wbuf->io_mutex)); + ubifs_assert(!c->ro_media); if (c->leb_size - wbuf->offs - wbuf->used < aligned_len) { err = -ENOSPC; @@ -527,7 +530,7 @@ int ubifs_wbuf_write_nolock(struct ubifs_wbuf *wbuf, void *buf, int len) cancel_wbuf_timer_nolock(wbuf); - if (c->ro_media) + if (c->ro_error) return -EROFS; if (aligned_len <= wbuf->avail) { @@ -663,8 +666,9 @@ int ubifs_write_node(struct ubifs_info *c, void *buf, int len, int lnum, buf_len); ubifs_assert(lnum >= 0 && lnum < c->leb_cnt && offs >= 0); ubifs_assert(offs % c->min_io_size == 0 && offs < c->leb_size); + ubifs_assert(!c->ro_media); - if (c->ro_media) + if (c->ro_error) return -EROFS; ubifs_prepare_node(c, buf, len, 1); diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c index d321baeca68d..a6da8aa68f37 100644 --- a/fs/ubifs/journal.c +++ b/fs/ubifs/journal.c @@ -122,11 +122,12 @@ static int reserve_space(struct ubifs_info *c, int jhead, int len) * better to try to allocate space at the ends of eraseblocks. This is * what the squeeze parameter does. */ + ubifs_assert(!c->ro_media); squeeze = (jhead == BASEHD); again: mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead); - if (c->ro_media) { + if (c->ro_error) { err = -EROFS; goto out_unlock; } diff --git a/fs/ubifs/log.c b/fs/ubifs/log.c index c345e125f42c..a41713e2fbb3 100644 --- a/fs/ubifs/log.c +++ b/fs/ubifs/log.c @@ -223,8 +223,8 @@ int ubifs_add_bud_to_log(struct ubifs_info *c, int jhead, int lnum, int offs) } mutex_lock(&c->log_mutex); - - if (c->ro_media) { + ubifs_assert(!c->ro_media); + if (c->ro_error) { err = -EROFS; goto out_unlock; } diff --git a/fs/ubifs/master.c b/fs/ubifs/master.c index 28beaeedadc0..0c818e855f59 100644 --- a/fs/ubifs/master.c +++ b/fs/ubifs/master.c @@ -361,7 +361,8 @@ int ubifs_write_master(struct ubifs_info *c) { int err, lnum, offs, len; - if (c->ro_media) + ubifs_assert(!c->ro_media); + if (c->ro_error) return -EROFS; lnum = UBIFS_MST_LNUM; diff --git a/fs/ubifs/misc.h b/fs/ubifs/misc.h index 4fa81d867e41..5d476ba184e6 100644 --- a/fs/ubifs/misc.h +++ b/fs/ubifs/misc.h @@ -132,7 +132,8 @@ static inline int ubifs_leb_unmap(const struct ubifs_info *c, int lnum) { int err; - if (c->ro_media) + ubifs_assert(!c->ro_media); + if (c->ro_error) return -EROFS; err = ubi_leb_unmap(c->ubi, lnum); if (err) { @@ -159,7 +160,8 @@ static inline int ubifs_leb_write(const struct ubifs_info *c, int lnum, { int err; - if (c->ro_media) + ubifs_assert(!c->ro_media); + if (c->ro_error) return -EROFS; err = ubi_leb_write(c->ubi, lnum, buf, offs, len, dtype); if (err) { @@ -186,7 +188,8 @@ static inline int ubifs_leb_change(const struct ubifs_info *c, int lnum, { int err; - if (c->ro_media) + ubifs_assert(!c->ro_media); + if (c->ro_error) return -EROFS; err = ubi_leb_change(c->ubi, lnum, buf, len, dtype); if (err) { diff --git a/fs/ubifs/shrinker.c b/fs/ubifs/shrinker.c index 0b201114a5ad..10eec8778438 100644 --- a/fs/ubifs/shrinker.c +++ b/fs/ubifs/shrinker.c @@ -250,7 +250,7 @@ static int kick_a_thread(void) dirty_zn_cnt = atomic_long_read(&c->dirty_zn_cnt); if (!dirty_zn_cnt || c->cmt_state == COMMIT_BROKEN || - c->ro_media) { + c->ro_media || c->ro_error) { mutex_unlock(&c->umount_mutex); continue; } diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index cd5900b85d38..1cfeec56df91 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -1751,10 +1751,10 @@ static void ubifs_put_super(struct super_block *sb) ubifs_wbuf_sync(&c->jheads[i].wbuf); /* - * On fatal errors c->ro_media is set to 1, in which case we do + * On fatal errors c->ro_error is set to 1, in which case we do * not write the master node. */ - if (!c->ro_media) { + if (!c->ro_error) { /* * We are being cleanly unmounted which means the * orphans were killed - indicate this in the master @@ -1798,16 +1798,20 @@ static int ubifs_remount_fs(struct super_block *sb, int *flags, char *data) } if ((sb->s_flags & MS_RDONLY) && !(*flags & MS_RDONLY)) { + if (c->ro_error) { + ubifs_msg("cannot re-mount R/W due to prior errors"); + return -EROFS; + } if (c->ro_media) { - ubifs_msg("cannot re-mount due to prior errors"); + ubifs_msg("cannot re-mount R/W - UBI volume is R/O"); return -EROFS; } err = ubifs_remount_rw(c); if (err) return err; } else if (!(sb->s_flags & MS_RDONLY) && (*flags & MS_RDONLY)) { - if (c->ro_media) { - ubifs_msg("cannot re-mount due to prior errors"); + if (c->ro_error) { + ubifs_msg("cannot re-mount R/O due to prior errors"); return -EROFS; } ubifs_remount_ro(c); diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index c4dc9b18f73e..f47ebb442d1c 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -1032,6 +1032,7 @@ struct ubifs_debug_info; * @max_leb_cnt: maximum count of logical eraseblocks * @old_leb_cnt: count of logical eraseblocks before re-size * @ro_media: the underlying UBI volume is read-only + * @ro_error: UBIFS switched to R/O mode because an error happened * * @dirty_pg_cnt: number of dirty pages (not used) * @dirty_zn_cnt: number of dirty znodes @@ -1272,7 +1273,8 @@ struct ubifs_info { int leb_cnt; int max_leb_cnt; int old_leb_cnt; - int ro_media; + unsigned int ro_media:1; + unsigned int ro_error:1; atomic_long_t dirty_pg_cnt; atomic_long_t dirty_zn_cnt; |