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dm: Use BLK_MQ_S_STOPPED instead of QUEUE_FLAG_STOPPED in blk-mq code 

Instead of manipulating both QUEUE_FLAG_STOPPED and BLK_MQ_S_STOPPED
in the dm start and stop queue functions, only manipulate the latter
flag. Change blk_queue_stopped() tests into blk_mq_queue_stopped().

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Acked-by: Mike Snitzer <snitzer@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
hifive-unleashed-5.1
Bart Van Assche 2016-10-28 17:22:00 -07:00 committed by Jens Axboe
parent 2b053aca76
commit f0d33ab76c
1 changed files with 1 additions and 15 deletions
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16
drivers/md/dm-rq.c
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@ -75,12 +75,6 @@ static void dm_old_start_queue(struct request_queue *q)
static void dm_mq_start_queue(struct request_queue *q)
{
unsigned long flags;
spin_lock_irqsave(q->queue_lock, flags);
queue_flag_clear(QUEUE_FLAG_STOPPED, q);
spin_unlock_irqrestore(q->queue_lock, flags);
blk_mq_start_stopped_hw_queues(q, true);
blk_mq_kick_requeue_list(q);
}
@ -105,16 +99,8 @@ static void dm_old_stop_queue(struct request_queue *q)
static void dm_mq_stop_queue(struct request_queue *q)
{
unsigned long flags;
spin_lock_irqsave(q->queue_lock, flags);
if (blk_queue_stopped(q)) {
spin_unlock_irqrestore(q->queue_lock, flags);
if (blk_mq_queue_stopped(q))
return;
}
queue_flag_set(QUEUE_FLAG_STOPPED, q);
spin_unlock_irqrestore(q->queue_lock, flags);
blk_mq_stop_hw_queues(q);
}