| commit | a5989bdc981ec85e0734ac22519cc0b780813d7b | |
| author | Jan Kara <jack@suse.cz> | |
| Wed, 16 Sep 2009 17:22:48 +0000 (16 19:22 +0200) | ||
| committer | Jens Axboe <jens.axboe@oracle.com> | |
| Fri, 25 Sep 2009 16:08:24 +0000 (25 18:08 +0200) | ||
| tree | 74cc93bd420b7bd044e3fd5451c652b3742015e6 | treesnapshot (tar.gz zip) |
| parent | 7fa07729e439a6184bd824746d06a49cca553f15 | commitdiff |
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>
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>
| fs/fs-writeback.c | diffblobblamehistory |