From 43a5e4e21964a6efb4d14a34644ec7109d0ae891 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Thu, 26 Dec 2013 21:31:35 +0800 Subject: block: blk-mq: support draining mq queue blk_mq_drain_queue() is introduced so that we can drain mq queue inside blk_cleanup_queue(). Also don't accept new requests any more if queue is marked as dying. Cc: Jens Axboe Signed-off-by: Ming Lei Signed-off-by: Jens Axboe --- block/blk-exec.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'block/blk-exec.c') diff --git a/block/blk-exec.c b/block/blk-exec.c index c3edf9dff566f..bbfc072a79c2b 100644 --- a/block/blk-exec.c +++ b/block/blk-exec.c @@ -60,6 +60,10 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk, rq->rq_disk = bd_disk; rq->end_io = done; + /* + * don't check dying flag for MQ because the request won't + * be resued after dying flag is set + */ if (q->mq_ops) { blk_mq_insert_request(q, rq, true); return; -- cgit v1.2.3