korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-11 12:28:41 +08:00
Code Issues Packages Projects Releases Wiki Activity

Btrfs: unplug every once and a while

Browse Source 
The btrfs io submission threads can build up massive plug lists.  This
keeps things more reasonable so we don't hand over huge dumps of IO at
once.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2011-12-15 15:38:41 -05:00
parent 567a45e917
commit d85c8a6f1b
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
fs/btrfs/volumes.c
View File

@ -295,6 +295,12 @@ loop_lock:
btrfs_requeue_work(&device->work);
goto done;
}
/* unplug every 64 requests just for good measure */
if (batch_run % 64 == 0) {
blk_finish_plug(&plug);
blk_start_plug(&plug);
sync_pending = 0;
}
}
cond_resched();