From 5e940aaa597c15e916618240ae5838864f36c91e Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Fri, 19 Sep 2014 21:53:46 +0800 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); which then causes blk_add_timer() to bypass adding the timer, since blk-mq no longer has q->rq_timed_out_fn defined. This patch fixes the problem by bypassing the check for blk-mq, so that both request deadlines are still set and the rolling timer updated. Signed-off-by: Ming Lei Signed-off-by: Jens Axboe --- 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 4d448259e622..8bae410b8a1b 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) + /* blk-mq has its own handler, so we don't need ->rq_timed_out_fn */ + if (!q->mq_ops && !q->rq_timed_out_fn) return; BUG_ON(!list_empty(&req->timeout_list));