[PATCH] cfq-iosched: move on_rr check into cfq_resort_rr_list()

Move the on_rr check into cfq_resort_rr_list(), every call site
needs to check it anyway.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 9 insertions, 10 deletions

diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index a31066d6c20c..4c24986151ba 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -357,7 +357,11 @@ static void cfq_resort_rr_list(struct cfq_queue *cfqq, int preempted)
         struct cfq_data *cfqd = cfqq->cfqd;
         struct list_head *list;
 
-        BUG_ON(!cfq_cfqq_on_rr(cfqq));
+        /*
+         * Resorting requires the cfqq to be on the RR list already.
+         */
+        if (!cfq_cfqq_on_rr(cfqq))
+                return;
 
         list_del(&cfqq->cfq_list);
 
@@ -642,8 +646,7 @@ __cfq_slice_expired(struct cfq_data *cfqd, struct cfq_queue *cfqq,
         else
                 cfqq->slice_left = 0;
 
-        if (cfq_cfqq_on_rr(cfqq))
-                cfq_resort_rr_list(cfqq, preempted);
+        cfq_resort_rr_list(cfqq, preempted);
 
         if (cfqq == cfqd->active_queue)
                 cfqd->active_queue = NULL;
@@ -1238,9 +1241,7 @@ static void cfq_init_prio_data(struct cfq_queue *cfqq)
         cfqq->org_ioprio = cfqq->ioprio;
         cfqq->org_ioprio_class = cfqq->ioprio_class;
 
-        if (cfq_cfqq_on_rr(cfqq))
-                cfq_resort_rr_list(cfqq, 0);
-
+        cfq_resort_rr_list(cfqq, 0);
         cfq_clear_cfqq_prio_changed(cfqq);
 }
 
@@ -1691,8 +1692,7 @@ static void cfq_completed_request(request_queue_t *q, struct request *rq)
         if (!cfq_class_idle(cfqq))
                 cfqd->last_end_request = now;
 
-        if (!cfq_cfqq_dispatched(cfqq) && cfq_cfqq_on_rr(cfqq))
-                cfq_resort_rr_list(cfqq, 0);
+        cfq_resort_rr_list(cfqq, 0);
 
         if (sync)
                 RQ_CIC(rq)->last_end_request = now;
@@ -1742,8 +1742,7 @@ static void cfq_prio_boost(struct cfq_queue *cfqq)
         /*
          * refile between round-robin lists if we moved the priority class
          */
-        if ((ioprio_class != cfqq->ioprio_class || ioprio != cfqq->ioprio) &&
-            cfq_cfqq_on_rr(cfqq))
+        if ((ioprio_class != cfqq->ioprio_class || ioprio != cfqq->ioprio))
                 cfq_resort_rr_list(cfqq, 0);
 }