| Message ID | 20170605155925.7896-4-ming.lei@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Mon, 2017-06-05 at 23:59 +0800, Ming Lei wrote: > 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 <ming.lei@redhat.com> > --- > 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. > */ Reviewed-by: Bart Van Assche <Bart.VanAssche@sandisk.com>
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. */
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 <ming.lei@redhat.com> --- include/linux/blk-mq.h | 8 ++++++++ 1 file changed, 8 insertions(+)