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Commit 4d199c6f authored by Jens Axboe's avatar Jens Axboe
Browse files

blk-cgroup: ensure that we clear the stop bit on quiesced queues 



If we call blk_mq_quiesce_queue() on a queue, we must remember to
pair that with something that clears the stopped by on the
queues later on.

Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent d3484991

block/blk-cgroup.c

+6 −4
Original line number Diff line number Diff line
@@ -1265,9 +1265,10 @@ int blkcg_activate_policy(struct request_queue *q, 


	spin_unlock_irq(q->queue_lock);

out_bypass_end:

	if (q->mq_ops)

	if (q->mq_ops) {

		blk_mq_unfreeze_queue(q);

	else

		blk_mq_start_stopped_hw_queues(q, true);

	} else

		blk_queue_bypass_end(q);

	if (pd_prealloc)

		pol->pd_free_fn(pd_prealloc);
@@ -1317,9 +1318,10 @@ void blkcg_deactivate_policy(struct request_queue *q, 


	spin_unlock_irq(q->queue_lock);



	if (q->mq_ops)

	if (q->mq_ops) {

		blk_mq_unfreeze_queue(q);

	else

		blk_mq_start_stopped_hw_queues(q, true);

	} else

		blk_queue_bypass_end(q);

}

EXPORT_SYMBOL_GPL(blkcg_deactivate_policy);