1 files changed, 0 insertions, 23 deletions

diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index 93693bf6083e..ca0d7e71324b 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -134,11 +134,6 @@ struct cfq_data {
         struct rb_root prio_trees[CFQ_PRIO_LISTS];
 
         unsigned int busy_queues;
-        /*
-         * Used to track any pending rt requests so we can pre-empt current
-         * non-RT cfqq in service when this value is non-zero.
-         */
-        unsigned int busy_rt_queues;
 
         int rq_in_driver[2];
         int sync_flight;
@@ -653,8 +648,6 @@ static void cfq_add_cfqq_rr(struct cfq_data *cfqd, struct cfq_queue *cfqq)
         BUG_ON(cfq_cfqq_on_rr(cfqq));
         cfq_mark_cfqq_on_rr(cfqq);
         cfqd->busy_queues++;
-        if (cfq_class_rt(cfqq))
-                cfqd->busy_rt_queues++;
 
         cfq_resort_rr_list(cfqd, cfqq);
 }
@@ -678,8 +671,6 @@ static void cfq_del_cfqq_rr(struct cfq_data *cfqd, struct cfq_queue *cfqq)
 
         BUG_ON(!cfqd->busy_queues);
         cfqd->busy_queues--;
-        if (cfq_class_rt(cfqq))
-                cfqd->busy_rt_queues--;
 }
 
 /*
@@ -1185,20 +1176,6 @@ static struct cfq_queue *cfq_select_queue(struct cfq_data *cfqd)
                 goto expire;
 
         /*
-         * If we have a RT cfqq waiting, then we pre-empt the current non-rt
-         * cfqq.
-         */
-        if (!cfq_class_rt(cfqq) && cfqd->busy_rt_queues) {
-                /*
-                 * We simulate this as cfqq timed out so that it gets to bank
-                 * the remaining of its time slice.
-                 */
-                cfq_log_cfqq(cfqd, cfqq, "preempt");
-                cfq_slice_expired(cfqd, 1);
-                goto new_queue;
-        }
-
-        /*
          * The active queue has requests and isn't expired, allow it to
          * dispatch.
          */