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| author | Richard Kennedy | 2010-05-24 23:32:38 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2010-05-25 17:07:00 +0200 |
| commit | 58a9d3d8db06ca2ec31f64ec49ab0aeb89971b85 (patch) | |
| tree | 70c695b6473d4d25b32a2946e053742f6c49755e /mm/memory.c | |
| parent | mm: introduce free_pages_prepare() (diff) | |
| download | kernel-qcow2-linux-58a9d3d8db06ca2ec31f64ec49ab0aeb89971b85.tar.gz kernel-qcow2-linux-58a9d3d8db06ca2ec31f64ec49ab0aeb89971b85.tar.xz kernel-qcow2-linux-58a9d3d8db06ca2ec31f64ec49ab0aeb89971b85.zip | |
fs-writeback: check sync bit earlier in inode_wait_for_writeback
When wb_writeback() hasn't written anything it will re-acquire the inode
lock before calling inode_wait_for_writeback.
This change tests the sync bit first so that is doesn't need to drop &
re-acquire the lock if the inode became available while wb_writeback() was
waiting to get the lock.
Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory.c')
0 files changed, 0 insertions, 0 deletions