[PATCH] blk-mq: kick requeue list in blk_mq_requeue_request()

[Ming Lei <tom.leiming@gmail.com>]

blk_mq_requeue_request() should kick off the requeue list so
that the request can be scheduled to queue finally.

In nvme conversion patch, blk_mq_requeue_request() is called
to requeue failed request from completion handler, this patch
fixes the issue and makes the block API working as expected.

Cc: Matias Bjørling <m@bjorling.me>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
---
 block/blk-mq.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/block/blk-mq.c b/block/blk-mq.c
index cb4c785..4c78539 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -462,6 +462,7 @@ void blk_mq_requeue_request(struct request *rq)
 
 	BUG_ON(blk_queued_rq(rq));
 	blk_mq_add_to_requeue_list(rq, true);
+	blk_mq_kick_requeue_list(rq->q);
 }
 EXPORT_SYMBOL(blk_mq_requeue_request);
 
-- 
1.7.9.5