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-rw-r--r--block/bfq-iosched.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
index 2a5c1a660f3b..98a42ddb1760 100644
--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c
@@ -364,6 +364,16 @@ static int ref_wr_duration[2];
*/
static const unsigned long max_service_from_wr = 120000;
+/*
+ * Maximum time between the creation of two queues, for stable merge
+ * to be activated (in ms)
+ */
+static const unsigned long bfq_activation_stable_merging = 600;
+/*
+ * Minimum time to be waited before evaluating delayed stable merge (in ms)
+ */
+static const unsigned long bfq_late_stable_merging = 600;
+
#define RQ_BIC(rq) icq_to_bic((rq)->elv.priv[0])
#define RQ_BFQQ(rq) ((rq)->elv.priv[1])
@@ -2711,9 +2721,9 @@ bfq_setup_cooperator(struct bfq_data *bfqd, struct bfq_queue *bfqq,
if (bic->stable_merge_bfqq &&
!bfq_bfqq_just_created(bfqq) &&
time_is_before_jiffies(bfqq->split_time +
- msecs_to_jiffies(200)) &&
+ msecs_to_jiffies(bfq_late_stable_merging)) &&
time_is_before_jiffies(bfqq->creation_time +
- msecs_to_jiffies(200))) {
+ msecs_to_jiffies(bfq_late_stable_merging))) {
struct bfq_queue *stable_merge_bfqq =
bic->stable_merge_bfqq;
int proc_ref = min(bfqq_process_refs(bfqq),
@@ -5494,7 +5504,7 @@ static struct bfq_queue *bfq_do_or_sched_stable_merge(struct bfq_data *bfqd,
*/
if (!last_bfqq_created ||
time_before(last_bfqq_created->creation_time +
- bfqd->bfq_burst_interval,
+ msecs_to_jiffies(bfq_activation_stable_merging),
bfqq->creation_time) ||
bfqq->entity.parent != last_bfqq_created->entity.parent ||
bfqq->ioprio != last_bfqq_created->ioprio ||