Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-27 14:41:39 +00:00
Code Issues Packages Projects Releases Wiki Activity

blk-iolatency: don't change the latency window

Browse Source 
Early versions of these patches had us waiting for seconds at a time
during submission, so we had to adjust the timing window we monitored
for latency.  Now we don't do things like that so this is unnecessary
code.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Josef Bacik 2018-07-16 12:12:22 -04:00 committed by Jens Axboe
parent f6352103d2
commit d607eefa3b
1 changed files with 0 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
block/blk-iolatency.c
View File

@ -468,16 +468,6 @@ static void iolatency_check_latencies(struct iolatency_grp *iolat, u64 now)
}
preempt_enable();
/*
* Our average exceeded our window, scale up our window so we are more
* accurate, but not more than the global timer.
*/
if (stat.mean > iolat->cur_win_nsec) {
iolat->cur_win_nsec <<= 1;
iolat->cur_win_nsec =
max_t(u64, iolat->cur_win_nsec, NSEC_PER_SEC);
}
parent = blkg_to_lat(blkg->parent);
if (!parent)
return;