dm cache policy smq: be more aggressive about triggering a writeback

If there are no clean entries to demote we really want to writeback immediately. Signed-off-by: Joe Thornber <[email protected]> Signed-off-by: Mike Snitzer <[email protected]>
ambv · May 15, 2017 · 78c4560 · 78c4560
1 parent a8cd1eb
commit 78c4560
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/md/dm-cache-policy-smq.c b/drivers/md/dm-cache-policy-smq.c
@@ -1192,7 +1192,7 @@ static void queue_demotion(struct smq_policy *mq)
 
 	e = q_peek(&mq->clean, mq->clean.nr_levels / 2, true);
 	if (!e) {
-		if (!clean_target_met(mq, false))
+		if (!clean_target_met(mq, true))
 			queue_writeback(mq);
 		return;
 	}