[PATCH] blk-mq: add requests in the tail of hctx->dispatch

[Ming Lei]

So that we can allow to insert request at the head
of hctx->dispatch.

Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
---
 block/blk-mq-sched.c | 2 +-
 block/blk-mq.c       | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/blk-mq-sched.c b/block/blk-mq-sched.c
index eeeea026fb47..b40dd063d61f 100644
--- a/block/blk-mq-sched.c
+++ b/block/blk-mq-sched.c
@@ -272,7 +272,7 @@ static bool blk_mq_sched_bypass_insert(struct blk_mq_hw_ctx *hctx,
 	 * the dispatch list.
 	 */
 	spin_lock(&hctx->lock);
-	list_add(&rq->queuelist, &hctx->dispatch);
+	list_add_tail(&rq->queuelist, &hctx->dispatch);
 	spin_unlock(&hctx->lock);
 	return true;
 }
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 4603b115e234..fed3d0c16266 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1067,7 +1067,7 @@ bool blk_mq_dispatch_rq_list(struct request_queue *q, struct list_head *list)
 		blk_mq_put_driver_tag(rq);
 
 		spin_lock(&hctx->lock);
-		list_splice_init(list, &hctx->dispatch);
+		list_splice_tail_init(list, &hctx->dispatch);
 		spin_unlock(&hctx->lock);
 
 		/*
-- 
2.9.5


-- 
Ming