[PATCH v4 03/11] blk-mq: introduce blk_mq_quiesce_queue_nowait()
From: Ming Lei <hidden>
Date: 2017-06-05 16:01:01
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
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. Signed-off-by: Ming Lei <redacted> --- 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 1e480015d172..13d1196f492f 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h@@ -266,6 +266,14 @@ 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. */
--
2.9.4