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2014-01-28Merge tag 'ext4_for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull ext4 update from Ted Ts'o: "Bug fixes and cleanups for ext4. We also enable the punch hole functionality for bigalloc file systems" * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: delete "set but not used" variables ext4: don't pass freed handle to ext4_walk_page_buffers ext4: avoid clearing beyond i_blocks when truncating an inline data file ext4: ext4_inode_is_fast_symlink should use EXT4_CLUSTER_SIZE ext4: fix a typo in extents.c ext4: use %pd printk specificer ext4: standardize error handling in ext4_da_write_inline_data_begin() ext4: retry allocation when inline->extent conversion failed ext4: enable punch hole for bigalloc
2014-01-28Merge tag 'nfs-for-3.14-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds
Pull NFS client updates from Trond Myklebust: "Highlights include: - stable fix for an infinite loop in RPC state machine - stable fix for a use after free situation in the NFSv4 trunking discovery - stable fix for error handling in the NFSv4 trunking discovery - stable fix for the page write update code - stable fix for the NFSv4.1 mount time security negotiation - stable fix for the NFSv4 open code. - O_DIRECT locking fixes - fix an Oops in the pnfs file commit code - RPC layer needs finer grained handling of connection errors - more RPC GSS upcall fixes" * tag 'nfs-for-3.14-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (30 commits) pnfs: Proper delay for NFS4ERR_RECALLCONFLICT in layout_get_done pnfs: fix BUG in filelayout_recover_commit_reqs nfs4: fix discover_server_trunking use after free NFSv4.1: Handle errors correctly in nfs41_walk_client_list nfs: always make sure page is up-to-date before extending a write to cover the entire page nfs: page cache invalidation for dio nfs: take i_mutex during direct I/O reads nfs: merge nfs_direct_write into nfs_file_direct_write nfs: merge nfs_direct_read into nfs_file_direct_read nfs: increment i_dio_count for reads, too nfs: defer inode_dio_done call until size update is done nfs: fix size updates for aio writes nfs4.1: properly handle ENOTSUP in SECINFO_NO_NAME NFSv4.1: Fix a race in nfs4_write_inode NFSv4.1: Don't trust attributes if a pNFS LAYOUTCOMMIT is outstanding point to the right include file in a comment (left over from a9004abc3) NFS: dprintk() should not print negative fileids and inode numbers nfs: fix dead code of ipv6_addr_scope sunrpc: Fix infinite loop in RPC state machine SUNRPC: Add tracepoint for socket errors ...
2014-01-28Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs updates from Al Viro: "Assorted stuff; the biggest pile here is Christoph's ACL series. Plus assorted cleanups and fixes all over the place... There will be another pile later this week" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (43 commits) __dentry_path() fixes vfs: Remove second variable named error in __dentry_path vfs: Is mounted should be testing mnt_ns for NULL or error. Fix race when checking i_size on direct i/o read hfsplus: remove can_set_xattr nfsd: use get_acl and ->set_acl fs: remove generic_acl nfs: use generic posix ACL infrastructure for v3 Posix ACLs gfs2: use generic posix ACL infrastructure jfs: use generic posix ACL infrastructure xfs: use generic posix ACL infrastructure reiserfs: use generic posix ACL infrastructure ocfs2: use generic posix ACL infrastructure jffs2: use generic posix ACL infrastructure hfsplus: use generic posix ACL infrastructure f2fs: use generic posix ACL infrastructure ext2/3/4: use generic posix ACL infrastructure btrfs: use generic posix ACL infrastructure fs: make posix_acl_create more useful fs: make posix_acl_chmod more useful ...
2014-01-27compat: fix sys_fanotify_markHeiko Carstens
Commit 91c2e0bcae72 ("unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE") added a new unified compat fanotify_mark syscall to be used by all architectures. Unfortunately the unified version merges the split mask parameter in a wrong way: the lower and higher word got swapped. This was discovered with glibc's tst-fanotify test case. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Reported-by: Andreas Krebbel <krebbel@linux.vnet.ibm.com> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Acked-by: "David S. Miller" <davem@davemloft.net> Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: <stable@vger.kernel.org> [3.10+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-27ocfs2: do not log ENOENT in unlink()Xiaowei.Hu
Suppress log message like this: (open_delete,8328,0):ocfs2_unlink:951 ERROR: status = -2 Orabug:17445485 Signed-off-by: Xiaowei Hu <xiaowei.hu@oracle.com> Cc: Joe Jin <joe.jin@oracle.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-26Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/umlLinus Torvalds
Pull UML changes from Richard Weinberger: "This time only various cleanups and housekeeping patches" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: um: hostfs: make functions static um: Include generic barrier.h um: Removed unused attributes from thread_struct
2014-01-26Merge tag 'for-3.14-merge-window' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs Pull 9p changes from Eric Van Hensbergen: "Included are a new cache model for support of mmap, and several cleanups across the filesystem and networking portions of the code" * tag 'for-3.14-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs: 9p: update documentation 9P: introduction of a new cache=mmap model. net/9p: remove virtio default hack and set appropriate bits instead 9p: remove useless 'name' variable and assignment 9p: fix return value in case in v9fs_fid_xattr_set() 9p: remove useless variable and assignment 9p: remove useless assignment 9p: remove unused 'super_block' struct pointer 9p: remove never used return variable 9p: remove unused 'p9_fid' struct pointer 9p: remove unused 'p9_client' struct pointer
2014-01-26__dentry_path() fixesAl Viro
* we need to save the starting point for restarts * reject pathologically short buffers outright Spotted-by: Denys Vlasenko <dvlasenk@redhat.com> Spotted-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-26vfs: Remove second variable named error in __dentry_pathEric W. Biederman
In commit 232d2d60aa5469bb097f55728f65146bd49c1d25 Author: Waiman Long <Waiman.Long@hp.com> Date: Mon Sep 9 12:18:13 2013 -0400 dcache: Translating dentry into pathname without taking rename_lock The __dentry_path locking was changed and the variable error was intended to be moved outside of the loop. Unfortunately the inner declaration of error was not removed. Resulting in a version of __dentry_path that will never return an error. Remove the problematic inner declaration of error and allow __dentry_path to return errors once again. Cc: stable@vger.kernel.org Cc: Waiman Long <Waiman.Long@hp.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-26vfs: Is mounted should be testing mnt_ns for NULL or error.Eric W. Biederman
A bug was introduced with the is_mounted helper function in commit f7a99c5b7c8bd3d3f533c8b38274e33f3da9096e Author: Al Viro <viro@zeniv.linux.org.uk> Date: Sat Jun 9 00:59:08 2012 -0400 get rid of ->mnt_longterm it's enough to set ->mnt_ns of internal vfsmounts to something distinct from all struct mnt_namespace out there; then we can just use the check for ->mnt_ns != NULL in the fast path of mntput_no_expire() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> The intent was to test if the real_mount(vfsmount)->mnt_ns was NULL_OR_ERR but the code is actually testing real_mount(vfsmount) and always returning true. The result is d_absolute_path returning paths it should be hiding. Cc: stable@vger.kernel.org Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-26Fix race when checking i_size on direct i/o readSteven Whitehouse
So far I've had one ACK for this, and no other comments. So I think it is probably time to send this via some suitable tree. I'm guessing that the vfs tree would be the most appropriate route, but not sure that there is one at the moment (don't see anything recent at kernel.org) so in that case I think -mm is the "back up plan". Al, please let me know if you will take this? Steve. --------------------- Following on from the "Re: [PATCH v3] vfs: fix a bug when we do some dio reads with append dio writes" thread on linux-fsdevel, this patch is my current version of the fix proposed as option (b) in that thread. Removing the i_size test from the direct i/o read path at vfs level means that filesystems now have to deal with requests which are beyond i_size themselves. These I've divided into three sets: a) Those with "no op" ->direct_IO (9p, cifs, ceph) These are obviously not going to be an issue b) Those with "home brew" ->direct_IO (nfs, fuse) I've been told that NFS should not have any problem with the larger i_size, however I've added an extra test to FUSE to duplicate the original behaviour just to be on the safe side. c) Those using __blockdev_direct_IO() These call through to ->get_block() which should deal with the EOF condition correctly. I've verified that with GFS2 and I believe that Zheng has verified it for ext4. I've also run the test on XFS and it passes both before and after this change. The part of the patch in filemap.c looks a lot larger than it really is - there are only two lines of real change. The rest is just indentation of the contained code. There remains a test of i_size though, which was added for btrfs. It doesn't cause the other filesystems a problem as the test is performed after ->direct_IO has been called. It is possible that there is a race that does matter to btrfs, however this patch doesn't change that, so its still an overall improvement. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Reported-by: Zheng Liu <gnehzuil.liu@gmail.com> Cc: Jan Kara <jack@suse.cz> Cc: Dave Chinner <david@fromorbit.com> Acked-by: Miklos Szeredi <miklos@szeredi.hu> Cc: Chris Mason <clm@fb.com> Cc: Josef Bacik <jbacik@fb.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-26hfsplus: remove can_set_xattrChristoph Hellwig
When using the per-superblock xattr handlers permission checking is done by the generic code. hfsplus just needs to check for the magic osx attribute not to leak into protected namespaces. Also given that the code was obviously copied from JFS the proper attribution was missing. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-26nfsd: use get_acl and ->set_aclChristoph Hellwig
Remove the boilerplate code to marshall and unmarhall ACL objects into xattrs and operate on the posix_acl objects directly. Also move all the ACL handling code into nfs?acl.c where it belongs. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-26fs: remove generic_aclChristoph Hellwig
And instead convert tmpfs to use the new generic ACL code, with two stub methods provided for in-memory filesystems. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-26nfs: use generic posix ACL infrastructure for v3 Posix ACLsChristoph Hellwig
This causes a small behaviour change in that we don't bother to set ACLs on file creation if the mode bit can express the access permissions fully, and thus behaving identical to local filesystems. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-26um: hostfs: make functions staticJames Hogan
The hostfs_*() callback functions are all only used within hostfs_kern.c, so make them static. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: user-mode-linux-devel@lists.sourceforge.net Signed-off-by: Richard Weinberger <richard@nod.at>
2014-01-25gfs2: use generic posix ACL infrastructureChristoph Hellwig
This contains some major refactoring for the create path so that inodes are created with the right mode to start with instead of fixing it up later. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25jfs: use generic posix ACL infrastructureChristoph Hellwig
Copy the scheme I introduced to btrfs many years ago to only use the xattr handler for ACLs, but pass plain attrs straight through. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Kleikamp <dave.kleikamp@oracle.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25xfs: use generic posix ACL infrastructureChristoph Hellwig
Also don't bother to set up a .get_acl method for symlinks as we do not support access control (ACLs or even mode bits) for symlinks in Linux, and create inodes with the proper mode instead of fixing it up later. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25reiserfs: use generic posix ACL infrastructureChristoph Hellwig
Also don't bother to set up a .get_acl method for symlinks as we do not support access control (ACLs or even mode bits) for symlinks in Linux. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25ocfs2: use generic posix ACL infrastructureChristoph Hellwig
This contains some major refactoring for the create path so that inodes are created with the right mode to start with instead of fixing it up later. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25jffs2: use generic posix ACL infrastructureChristoph Hellwig
Also don't bother to set up a .get_acl method for symlinks as we do not support access control (ACLs or even mode bits) for symlinks in Linux. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25hfsplus: use generic posix ACL infrastructureChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Vyacheslav Dubeyko <slava@dubeyko.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25f2fs: use generic posix ACL infrastructureChristoph Hellwig
f2fs has some weird mode bit handling, so still using the old chmod code for now. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25ext2/3/4: use generic posix ACL infrastructureChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25btrfs: use generic posix ACL infrastructureChristoph Hellwig
Also don't bother to set up a .get_acl method for symlinks as we do not support access control (ACLs or even mode bits) for symlinks in Linux. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25fs: make posix_acl_create more usefulChristoph Hellwig
Rename the current posix_acl_created to __posix_acl_create and add a fully featured helper to set up the ACLs on file creation that uses get_acl(). Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25fs: make posix_acl_chmod more usefulChristoph Hellwig
Rename the current posix_acl_chmod to __posix_acl_chmod and add a fully featured ACL chmod helper that uses the ->set_acl inode operation. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25fs: add generic xattr_acl handlersChristoph Hellwig
With the ->set_acl inode operation we can implement the Posix ACL xattr handlers in generic code instead of duplicating them all over the tree. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25fs: add get_acl helperChristoph Hellwig
Factor out the code to get an ACL either from the inode or disk from check_acl, so that it can be used elsewhere later on. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25fs: merge xattr_acl.c into posix_acl.cChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25reiserfs: prefix ACL symbols with reiserfs_Christoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds
Pull networking updates from David Miller: 1) BPF debugger and asm tool by Daniel Borkmann. 2) Speed up create/bind in AF_PACKET, also from Daniel Borkmann. 3) Correct reciprocal_divide and update users, from Hannes Frederic Sowa and Daniel Borkmann. 4) Currently we only have a "set" operation for the hw timestamp socket ioctl, add a "get" operation to match. From Ben Hutchings. 5) Add better trace events for debugging driver datapath problems, also from Ben Hutchings. 6) Implement auto corking in TCP, from Eric Dumazet. Basically, if we have a small send and a previous packet is already in the qdisc or device queue, defer until TX completion or we get more data. 7) Allow userspace to manage ipv6 temporary addresses, from Jiri Pirko. 8) Add a qdisc bypass option for AF_PACKET sockets, from Daniel Borkmann. 9) Share IP header compression code between Bluetooth and IEEE802154 layers, from Jukka Rissanen. 10) Fix ipv6 router reachability probing, from Jiri Benc. 11) Allow packets to be captured on macvtap devices, from Vlad Yasevich. 12) Support tunneling in GRO layer, from Jerry Chu. 13) Allow bonding to be configured fully using netlink, from Scott Feldman. 14) Allow AF_PACKET users to obtain the VLAN TPID, just like they can already get the TCI. From Atzm Watanabe. 15) New "Heavy Hitter" qdisc, from Terry Lam. 16) Significantly improve the IPSEC support in pktgen, from Fan Du. 17) Allow ipv4 tunnels to cache routes, just like sockets. From Tom Herbert. 18) Add Proportional Integral Enhanced packet scheduler, from Vijay Subramanian. 19) Allow openvswitch to mmap'd netlink, from Thomas Graf. 20) Key TCP metrics blobs also by source address, not just destination address. From Christoph Paasch. 21) Support 10G in generic phylib. From Andy Fleming. 22) Try to short-circuit GRO flow compares using device provided RX hash, if provided. From Tom Herbert. The wireless and netfilter folks have been busy little bees too. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2064 commits) net/cxgb4: Fix referencing freed adapter ipv6: reallocate addrconf router for ipv6 address when lo device up fib_frontend: fix possible NULL pointer dereference rtnetlink: remove IFLA_BOND_SLAVE definition rtnetlink: remove check for fill_slave_info in rtnl_have_link_slave_info qlcnic: update version to 5.3.55 qlcnic: Enhance logic to calculate msix vectors. qlcnic: Refactor interrupt coalescing code for all adapters. qlcnic: Update poll controller code path qlcnic: Interrupt code cleanup qlcnic: Enhance Tx timeout debugging. qlcnic: Use bool for rx_mac_learn. bonding: fix u64 division rtnetlink: add missing IFLA_BOND_AD_INFO_UNSPEC sfc: Use the correct maximum TX DMA ring size for SFC9100 Add Shradha Shah as the sfc driver maintainer. net/vxlan: Share RX skb de-marking and checksum checks with ovs tulip: cleanup by using ARRAY_SIZE() ip_tunnel: clear IPCB in ip_tunnel_xmit() in case dst_link_failure() is called net/cxgb4: Don't retrieve stats during recovery ...
2014-01-25befs: iget_locked() doesn't return an ERR_PTRRakesh Pandit
Also fix befs_iget return value if iget_locked fails. Signed-off-by: Rakesh Pandit <rakesh@tuxera.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25fs: __fget_light() can use __fget() in slow pathOleg Nesterov
The slow path in __fget_light() can use __fget() to avoid the code duplication. Saves 232 bytes. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25fs: factor out common code in fget_light() and fget_raw_light()Oleg Nesterov
Apart from FMODE_PATH check fget_light() and fget_raw_light() are identical, shift the code into the new helper, __fget_light(fd, mask). Saves 208 bytes. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25fs: factor out common code in fget() and fget_raw()Oleg Nesterov
Apart from FMODE_PATH check fget() and fget_raw() are identical, shift the code into the new simple helper, __fget(fd, mask). Saves 160 bytes. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25change close_files() to use rcu_dereference_raw(files->fdt)Oleg Nesterov
put_files_struct() and close_files() do rcu_read_lock() to make rcu_dereference_check_fdtable() happy. This looks a bit ugly, files_fdtable() just reads the pointer, we can simply use rcu_dereference_raw() to avoid the warning. The patch also changes close_files() to return fdt, this avoids another rcu_read_lock()/files_fdtable() in put_files_struct(). I think close_files() needs more cleanups: - we do not need xchg() exactly because we are the last user of this files_struct - "if (file)" should be turned into WARN_ON(!file) Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25introduce __fcheck_files() to fix rcu_dereference_check_fdtable(), kill ↵Oleg Nesterov
rcu_my_thread_group_empty() rcu_dereference_check_fdtable() looks very wrong, 1. rcu_my_thread_group_empty() was added by 844b9a8707f1 "vfs: fix RCU-lockdep false positive due to /proc" but it doesn't really fix the problem. A CLONE_THREAD (without CLONE_FILES) task can hit the same race with get_files_struct(). And otoh rcu_my_thread_group_empty() can suppress the correct warning if the caller is the CLONE_FILES (without CLONE_THREAD) task. 2. files->count == 1 check is not really right too. Even if this files_struct is not shared it is not safe to access it lockless unless the caller is the owner. Otoh, this check is sub-optimal. files->count == 0 always means it is safe to use it lockless even if files != current->files, but put_files_struct() has to take rcu_read_lock(). See the next patch. This patch removes the buggy checks and turns fcheck_files() into __fcheck_files() which uses rcu_dereference_raw(), the "unshared" callers, fget_light() and fget_raw_light(), can use it to avoid the warning from RCU-lockdep. fcheck_files() is trivially reimplemented as rcu_lockdep_assert() plus __fcheck_files(). Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25kill reiserfs_bdevname()Al Viro
it's never called with NULL argument... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25afs: get rid of junk in fs/afs/proc.cAl Viro
kill pointless method instances and don't bother with ->owner - it's ignored for procfs files anyway, make use of remove_proc_subtree() for removal, get rid of cell->proc_dir. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25nls: have register_nls() set ->ownerAl Viro
pass owner explicitly to __register_nls(), make register_nls() a macro passing THIS_MODULE as the owner argument to __register_nls(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25eventfd_ctx_fdget(): use fdget() instead of fget()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25btrfs: sanitize BTRFS_IOC_FILE_EXTENT_SAMEAl Viro
* don't assume that ->dest_count won't change between copy_from_user() and memdup_user() * use fdget instead of fget * don't bother comparing superblocks when we'd already compared vfsmounts * get rid of excessive goto * use file_inode() instead of open-coding the sucker Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25qnx4: clean qnx4_fill_super() upAl Viro
* pass on-disk superblock to qnx4_chkroot() explicitly * don't leave stale (and unused) pointers in qnx4_super_block * free stuff in ->kill_sb(); ->put_super() becomes empty and dies * simplify failure exits Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25efs: get rid of ->put_super()Al Viro
simplifies failure exits in ->mount()... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25cramfs: take headers to fs/cramfsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25cramfs: get rid of ->put_super()Al Viro
failure exits are simpler that way Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25affs: use ->kill_sb() to simplify ->put_super() and failure exits of ->mount()Al Viro
... and return saner errors from ->mount(), while we are at it Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-01-25xfs: switch to kfree_put_link()Al Viro
don't bother open-coding it... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-10-09 00:36:03 +0000