---

yaml
---
r: 172913
b: refs/heads/master
c: b3b6d04
h: refs/heads/master
i:
  172911: e07f0fd
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: df5fe3e8e13883f58dc97489076bbcc150789a21
+refs/heads/master: b3b6d0408c953524f979468562e7e210d8634150

trunk/block/cfq-iosched.c

@@ -202,7 +202,7 @@ enum cfqq_state_flags {
 	CFQ_CFQQ_FLAG_prio_changed,	/* task priority has changed */
 	CFQ_CFQQ_FLAG_slice_new,	/* no requests dispatched in slice */
 	CFQ_CFQQ_FLAG_sync,		/* synchronous queue */
-	CFQ_CFQQ_FLAG_coop,		/* has done a coop jump of the queue */
+	CFQ_CFQQ_FLAG_coop,		/* cfqq is shared */
 };
 
 #define CFQ_CFQQ_FNS(name)						\
@@ -950,11 +950,8 @@ static struct cfq_queue *cfq_get_next_queue(struct cfq_data *cfqd)
 static struct cfq_queue *cfq_set_active_queue(struct cfq_data *cfqd,
 					      struct cfq_queue *cfqq)
 {
-	if (!cfqq) {
+	if (!cfqq)
 		cfqq = cfq_get_next_queue(cfqd);
-		if (cfqq)
-			cfq_clear_cfqq_coop(cfqq);
-	}
 
 	__cfq_set_active_queue(cfqd, cfqq);
 	return cfqq;
@@ -1035,8 +1032,7 @@ static struct cfq_queue *cfqq_close(struct cfq_data *cfqd,
  * assumption.
  */
 static struct cfq_queue *cfq_close_cooperator(struct cfq_data *cfqd,
-					      struct cfq_queue *cur_cfqq,
-					      bool probe)
+					      struct cfq_queue *cur_cfqq)
 {
 	struct cfq_queue *cfqq;
 
@@ -1055,11 +1051,6 @@ static struct cfq_queue *cfq_close_cooperator(struct cfq_data *cfqd,
 	if (!cfq_cfqq_sync(cfqq))
 		return NULL;
 
-	if (cfq_cfqq_coop(cfqq))
-		return NULL;
-
-	if (!probe)
-		cfq_mark_cfqq_coop(cfqq);
 	return cfqq;
 }
 
@@ -1243,7 +1234,7 @@ static struct cfq_queue *cfq_select_queue(struct cfq_data *cfqd)
 	 * cooperators and put the close queue at the front of the service
 	 * tree.  If possible, merge the expiring queue with the new cfqq.
 	 */
-	new_cfqq = cfq_close_cooperator(cfqd, cfqq, 0);
+	new_cfqq = cfq_close_cooperator(cfqd, cfqq);
 	if (new_cfqq) {
 		if (!cfqq->new_cfqq)
 			cfq_setup_merge(cfqq, new_cfqq);
@@ -2294,7 +2285,7 @@ static void cfq_completed_request(struct request_queue *q, struct request *rq)
 		 */
 		if (cfq_slice_used(cfqq) || cfq_class_idle(cfqq))
 			cfq_slice_expired(cfqd, 1);
-		else if (cfqq_empty && !cfq_close_cooperator(cfqd, cfqq, 1) &&
+		else if (cfqq_empty && !cfq_close_cooperator(cfqd, cfqq) &&
 			 sync && !rq_noidle(rq))
 			cfq_arm_slice_timer(cfqd);
 	}
@@ -2395,6 +2386,7 @@ cfq_merge_cfqqs(struct cfq_data *cfqd, struct cfq_io_context *cic,
 {
 	cfq_log_cfqq(cfqd, cfqq, "merging with queue %p", cfqq->new_cfqq);
 	cic_set_cfqq(cic, cfqq->new_cfqq, 1);
+	cfq_mark_cfqq_coop(cfqq->new_cfqq);
 	cfq_put_queue(cfqq);
 	return cic_to_cfqq(cic, 1);
 }