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dm cache policy smq: put newly promoted entries at the top of the multiqueue 

This stops entries bouncing in and out of the cache quickly.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Joe Thornber 2017-05-11 05:11:06 -04:00 committed by Mike Snitzer
parent 78c45607b9
commit 4d44ec5ab7
1 changed files with 1 additions and 0 deletions
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drivers/md/dm-cache-policy-smq.c
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@ -1452,6 +1452,7 @@ static void __complete_background_work(struct smq_policy *mq,
clear_pending(mq, e);
if (success) {
e->oblock = work->oblock;
e->level = NR_CACHE_LEVELS - 1;
push(mq, e);
// h, q, a
} else {