X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=blobdiff_plain;f=block%2Fcfq-iosched.c;h=3548705b04e482a4405097217011256105c4bdca;hp=4c12869fcf77e044f75dfd3f4728c3343d9ef1f3;hb=refs%2Fheads%2Fpandora-3.2-c64_tools;hpb=11da3764a7b413c4e66138bd7bdb5bacd11617a6

diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index 4c12869fcf77..3548705b04e4 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -1655,6 +1655,8 @@ cfq_merged_requests(struct request_queue *q, struct request *rq,
 		    struct request *next)
 {
 	struct cfq_queue *cfqq = RQ_CFQQ(rq);
+	struct cfq_data *cfqd = q->elevator->elevator_data;
+
 	/*
 	 * reposition in fifo if next is older than rq
 	 */
@@ -1669,6 +1671,16 @@ cfq_merged_requests(struct request_queue *q, struct request *rq,
 	cfq_remove_request(next);
 	cfq_blkiocg_update_io_merged_stats(&(RQ_CFQG(rq))->blkg,
 					rq_data_dir(next), rq_is_sync(next));
+
+	cfqq = RQ_CFQQ(next);
+	/*
+	 * all requests of this queue are merged to other queues, delete it
+	 * from the service tree. If it's the active_queue,
+	 * cfq_dispatch_requests() will choose to expire it or do idle
+	 */
+	if (cfq_cfqq_on_rr(cfqq) && RB_EMPTY_ROOT(&cfqq->sort_list) &&
+	    cfqq != cfqd->active_queue)
+		cfq_del_cfqq_rr(cfqd, cfqq);
 }
 
 static int cfq_allow_merge(struct request_queue *q, struct request *rq,