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Date:	Fri, 19 Sep 2014 21:53:46 +0800
From:	Ming Lei <>
To:, Christoph Hellwig <>
Cc:	Jens Axboe <>, Ming Lei <>
Subject: [PATCH] blk-timeout: fix blk_add_timer

Commit 8cb34819cdd5d(blk-mq: unshared timeout handler) introduces
blk-mq's own timeout handler, and removes following line

	blk_queue_rq_timed_out(q, blk_mq_rq_timed_out);

then cause blk_add_timer() to do nop in case of blk-mq.

This patch fixes the problem by bypassing the check for blk-mq.

Signe-off-by: Ming Lei <>
 block/blk-timeout.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/block/blk-timeout.c b/block/blk-timeout.c
index 4d44825..0c2375c 100644
--- a/block/blk-timeout.c
+++ b/block/blk-timeout.c
@@ -186,7 +186,8 @@ void blk_add_timer(struct request *req)
 	struct request_queue *q = req->q;
 	unsigned long expiry;
-	if (!q->rq_timed_out_fn)
+	/* mq needn't the handler */
+	if (!q->mq_ops && !q->rq_timed_out_fn)

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