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Commit 4d44ec5a authored by Joe Thornber's avatar Joe Thornber Committed by Mike Snitzer
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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: default avatarJoe Thornber <ejt@redhat.com>
Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
parent 78c45607

drivers/md/dm-cache-policy-smq.c

+1 −0
Original line number Original line Diff line number Diff line
@@ -1452,6 +1452,7 @@ static void __complete_background_work(struct smq_policy *mq, 
		clear_pending(mq, e);

		clear_pending(mq, e);

		if (success) {

		if (success) {

			e->oblock = work->oblock;

			e->oblock = work->oblock;

			e->level = NR_CACHE_LEVELS - 1;

			push(mq, e);

			push(mq, e);

			// h, q, a

			// h, q, a

		} else {

		} else {