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blk-mq: export blk_mq_run_hw_queues

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Rename blk_mq_run_queues to blk_mq_run_hw_queues, add async argument,
and export it.

DM's suspend support must be able to run the queue without starting
stopped hw queues.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Mike Snitzer 2015-03-11 23:56:38 -04:00 committed by Jens Axboe
parent b62c21b71f
commit b94ec29640
2 changed files with 5 additions and 4 deletions
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8
block/blk-mq.c
View File

@ -33,7 +33,6 @@ static DEFINE_MUTEX(all_q_mutex);
static LIST_HEAD(all_q_list);
static void __blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx);
static void blk_mq_run_queues(struct request_queue *q);
/*
* Check if any of the ctx's have pending work in this hardware queue
@ -118,7 +117,7 @@ void blk_mq_freeze_queue_start(struct request_queue *q)
if (freeze) {
percpu_ref_kill(&q->mq_usage_counter);
blk_mq_run_queues(q);
blk_mq_run_hw_queues(q, false);
}
}
EXPORT_SYMBOL_GPL(blk_mq_freeze_queue_start);
@ -904,7 +903,7 @@ void blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async)
&hctx->run_work, 0);
}
static void blk_mq_run_queues(struct request_queue *q)
void blk_mq_run_hw_queues(struct request_queue *q, bool async)
{
struct blk_mq_hw_ctx *hctx;
int i;
@ -915,9 +914,10 @@ static void blk_mq_run_queues(struct request_queue *q)
test_bit(BLK_MQ_S_STOPPED, &hctx->state))
continue;
blk_mq_run_hw_queue(hctx, false);
blk_mq_run_hw_queue(hctx, async);
}
}
EXPORT_SYMBOL(blk_mq_run_hw_queues);
void blk_mq_stop_hw_queue(struct blk_mq_hw_ctx *hctx)
{

1
include/linux/blk-mq.h
View File

@ -220,6 +220,7 @@ void blk_mq_start_hw_queue(struct blk_mq_hw_ctx *hctx);
void blk_mq_stop_hw_queues(struct request_queue *q);
void blk_mq_start_hw_queues(struct request_queue *q);
void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async);
void blk_mq_run_hw_queues(struct request_queue *q, bool async);
void blk_mq_delay_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs);
void blk_mq_tag_busy_iter(struct blk_mq_hw_ctx *hctx, busy_iter_fn *fn,
void *priv);