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| author | Michal Marek <mmarek@suse.cz> | 2010-12-01 13:13:56 +0100 |
|---|---|---|
| committer | Michal Marek <mmarek@suse.cz> | 2010-12-01 13:13:56 +0100 |
| commit | 307991055b0ce65d53dc1eb501c456c10eb36360 (patch) | |
| tree | 71bb9263dc71344e5d7b97ca6d5cf223f1f1a856 /fs/xfs/xfs_filestream.c | |
| parent | initramfs: Really fix build break on symbol-prefixed archs (diff) | |
| parent | [media] Fix Kconfig errors due to two visible menus (diff) | |
| download | linux-307991055b0ce65d53dc1eb501c456c10eb36360.tar.xz linux-307991055b0ce65d53dc1eb501c456c10eb36360.zip | |
Merge branch 'kconfig_fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-next into kbuild/rc-fixes
Diffstat (limited to 'fs/xfs/xfs_filestream.c')
| -rw-r--r-- | fs/xfs/xfs_filestream.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c index 9b715dce5699..9124425b7f2f 100644 --- a/fs/xfs/xfs_filestream.c +++ b/fs/xfs/xfs_filestream.c @@ -744,9 +744,15 @@ xfs_filestream_new_ag( * If the file's parent directory is known, take its iolock in exclusive * mode to prevent two sibling files from racing each other to migrate * themselves and their parent to different AGs. + * + * Note that we lock the parent directory iolock inside the child + * iolock here. That's fine as we never hold both parent and child + * iolock in any other place. This is different from the ilock, + * which requires locking of the child after the parent for namespace + * operations. */ if (pip) - xfs_ilock(pip, XFS_IOLOCK_EXCL); + xfs_ilock(pip, XFS_IOLOCK_EXCL | XFS_IOLOCK_PARENT); /* * A new AG needs to be found for the file. If the file's parent |