From 4f084b41a0c04a69067be98a210e6b50969f9945 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Tue, 6 Jun 2017 23:22:02 +0800 Subject: [PATCH] blk-mq: introduce blk_mq_quiesce_queue_nowait() This patch introduces blk_mq_quiesce_queue_nowait() so that we can workaround mpt3sas for quiescing its queue. Once mpt3sas is fixed, we can remove this helper. Reviewed-by: Bart Van Assche Signed-off-by: Ming Lei Signed-off-by: Jens Axboe --- include/linux/blk-mq.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 99348adb3e16..78a8b64074ea 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -262,6 +262,14 @@ int blk_mq_reinit_tagset(struct blk_mq_tag_set *set); int blk_mq_map_queues(struct blk_mq_tag_set *set); void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, int nr_hw_queues); +/* + * FIXME: this helper is just for working around mpt3sas. + */ +static inline void blk_mq_quiesce_queue_nowait(struct request_queue *q) +{ + blk_mq_stop_hw_queues(q); +} + /* * Driver command data is immediately after the request. So subtract request * size to get back to the original request, add request size to get the PDU.