linux-toradex.git/fs/ocfs2/inode.c, branch v4.2.6

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2015-04-27T00:22:07+00:00

Pull fourth vfs update from Al Viro:
 "d_inode() annotations from David Howells (sat in for-next since before
  the beginning of merge window) + four assorted fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  RCU pathwalk breakage when running into a symlink overmounting something
  fix I_DIO_WAKEUP definition
  direct-io: only inc/dec inode->i_dio_count for file systems
  fs/9p: fix readdir()
  VFS: assorted d_backing_inode() annotations
  VFS: fs/inode.c helpers: d_inode() annotations
  VFS: fs/cachefiles: d_backing_inode() annotations
  VFS: fs library helpers: d_inode() annotations
  VFS: assorted weird filesystems: d_inode() annotations
  VFS: normal filesystems (and lustre): d_inode() annotations
  VFS: security/: d_inode() annotations
  VFS: security/: d_backing_inode() annotations
  VFS: net/: d_inode() annotations
  VFS: net/unix: d_backing_inode() annotations
  VFS: kernel/: d_inode() annotations
  VFS: audit: d_backing_inode() annotations
  VFS: Fix up some ->d_inode accesses in the chelsio driver
  VFS: Cachefiles should perform fs modifications on the top layer only
  VFS: AF_UNIX sockets should call mknod on the top layer only

VFS: normal filesystems (and lustre): d_inode() annotations

2015-04-15T19:06:57+00:00

that's the bulk of filesystem drivers dealing with inodes of their own

Signed-off-by: David Howells 
Signed-off-by: Al Viro

ocfs2: use ENOENT instead of EEXIST when get system file fails

2015-04-14T23:48:58+00:00

When ocfs2_get_system_file_inode fails, it is obscure to set the return
value to -EEXIST. So change it to -ENOENT.

Signed-off-by: Joseph Qi 
Cc: Mark Fasheh 
Cc: Joel Becker 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ocfs2: add functions to add and remove inode in orphan dir

2015-02-17T01:56:04+00:00

Add functions to add inode to orphan dir and remove inode in orphan dir.
Here we do not call ocfs2_prepare_orphan_dir and ocfs2_orphan_add
directly.  Because append O_DIRECT will add inode to orphan two and may
result in more than one orphan entry for the same inode.

[akpm@linux-foundation.org: avoid dynamic stack allocation]
Signed-off-by: Joseph Qi 
Cc: Weiwei Wang 
Cc: Junxiao Bi 
Cc: Joel Becker 
Cc: Mark Fasheh 
Cc: Xuejiufei 
Cc: alex chen 
Cc: Fengguang Wu 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ocfs2: remove bogus test from ocfs2_read_locked_inode()

2014-12-11T01:41:03+00:00

'args' are always set for ocfs2_read_locked_inode() and brelse() checks
whether bh is NULL.  So the test (args && bh) is unnecessary (plus the
args part is really confusing anyway).  Remove it.

Coverity id: 1128856.

Signed-off-by: Jan Kara 
Cc: Mark Fasheh 
Cc: Joel Becker 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm + fs: store shadow entries in page cache

2014-04-03T23:21:01+00:00

Reclaim will be leaving shadow entries in the page cache radix tree upon
evicting the real page.  As those pages are found from the LRU, an
iput() can lead to the inode being freed concurrently.  At this point,
reclaim must no longer install shadow pages because the inode freeing
code needs to ensure the page tree is really empty.

Add an address_space flag, AS_EXITING, that the inode freeing code sets
under the tree lock before doing the final truncate.  Reclaim will check
for this flag before installing shadow pages.

Signed-off-by: Johannes Weiner 
Reviewed-by: Rik van Riel 
Reviewed-by: Minchan Kim 
Cc: Andrea Arcangeli 
Cc: Bob Liu 
Cc: Christoph Hellwig 
Cc: Dave Chinner 
Cc: Greg Thelen 
Cc: Hugh Dickins 
Cc: Jan Kara 
Cc: KOSAKI Motohiro 
Cc: Luigi Semenzato 
Cc: Mel Gorman 
Cc: Metin Doslu 
Cc: Michel Lespinasse 
Cc: Ozgun Erdogan 
Cc: Peter Zijlstra 
Cc: Roman Gushchin 
Cc: Ryan Mallon 
Cc: Tejun Heo 
Cc: Vlastimil Babka 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ocfs2: avoid blocking in ocfs2_mark_lockres_freeing() in downconvert thread

2014-04-03T23:20:55+00:00

If we are dropping last inode reference from downconvert thread, we will
end up calling ocfs2_mark_lockres_freeing() which can block if the lock
we are freeing is queued thus creating an A-A deadlock.  Luckily, since
we are the downconvert thread, we can immediately dequeue the lock and
thus avoid waiting in this case.

Signed-off-by: Jan Kara 
Reviewed-by: Mark Fasheh 
Reviewed-by: Srinivas Eeda 
Cc: Joel Becker 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ocfs2: move dquot_initialize() in ocfs2_delete_inode() somewhat later

2014-04-03T23:20:54+00:00

Move dquot_initalize() call in ocfs2_delete_inode() after the moment we
verify inode is actually a sane one to delete.  We certainly don't want
to initialize quota for system inodes etc.  This also avoids calling
into quota code from downconvert thread.

Add more details into the comment why bailing out from
ocfs2_delete_inode() when we are in downconvert thread is OK.

Signed-off-by: Jan Kara 
Reviewed-by: Mark Fasheh 
Reviewed-by: Srinivas Eeda 
Cc: Joel Becker 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ocfs2: remove OCFS2_INODE_SKIP_DELETE flag

2014-04-03T23:20:54+00:00

The flag was never set, delete it.

Signed-off-by: Jan Kara 
Reviewed-by: Mark Fasheh 
Reviewed-by: Srinivas Eeda 
Cc: Joel Becker 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ocfs2: improve fsync efficiency and fix deadlock between aio_write and sync_file

2014-04-03T23:20:53+00:00

Currently, ocfs2_sync_file grabs i_mutex and forces the current journal
transaction to complete.  This isn't terribly efficient, since sync_file
really only needs to wait for the last transaction involving that inode
to complete, and this doesn't require i_mutex.

Therefore, implement the necessary bits to track the newest tid
associated with an inode, and teach sync_file to wait for that instead
of waiting for everything in the journal to commit.  Furthermore, only
issue the flush request to the drive if jbd2 hasn't already done so.

This also eliminates the deadlock between ocfs2_file_aio_write() and
ocfs2_sync_file().  aio_write takes i_mutex then calls
ocfs2_aiodio_wait() to wait for unaligned dio writes to finish.
However, if that dio completion involves calling fsync, then we can get
into trouble when some ocfs2_sync_file tries to take i_mutex.

Signed-off-by: Darrick J. Wong 
Reviewed-by: Mark Fasheh 
Cc: Joel Becker 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds