mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-02 15:18:19 +00:00
Code Issues Releases Wiki Activity

dm cache policy smq: make the cleaner policy write-back more aggressively

Browse source 
By ignoring the sentinels the cleaner policy is able to write-back dirty
cache data much faster.  There is no reason to respect the sentinels,
which denote that a block was changed recently, when using the cleaner
policy given that the cleaner is tasked with writing back all dirty
data.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Joe Thornber 2017-03-31 10:46:54 -04:00 committed by Mike Snitzer
parent 449b668ce0
commit cc7e394024
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/md/dm-cache-policy-smq.c
View file

@ -1166,7 +1166,7 @@ static void queue_writeback(struct smq_policy *mq)
struct policy_work work;
struct entry *e;
e = q_peek(&mq->dirty, mq->dirty.nr_levels, false);
e = q_peek(&mq->dirty, mq->dirty.nr_levels, !mq->migrations_allowed);
if (e) {
mark_pending(mq, e);
q_del(&mq->dirty, e);