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| author |   Jan Kara <jack@suse.cz> | 2009-09-16 19:22:48 +0200 |
|---|---|---|
| committer |   Jens Axboe <jens.axboe@oracle.com> | 2009-09-25 18:08:24 +0200 |
| commit | a5989bdc981ec85e0734ac22519cc0b780813d7b (patch) | |
| tree | 74cc93bd420b7bd044e3fd5451c652b3742015e6 /mm | |
| parent | Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip (diff) | |
| download | linux-dev-a5989bdc981ec85e0734ac22519cc0b780813d7b.tar.xz linux-dev-a5989bdc981ec85e0734ac22519cc0b780813d7b.zip | |
fs: Fix busyloop in wb_writeback()
If all inodes are under writeback (e.g. in case when there's only one inode
with dirty pages), wb_writeback() with WB_SYNC_NONE work basically degrades
to busylooping until I_SYNC flags of the inode is cleared. Fix the problem by
waiting on I_SYNC flags of an inode on b_more_io list in case we failed to
write anything.
Tested-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions