Commit 49d1822b authored by Chunguang Xu's avatar Chunguang Xu Committed by Jens Axboe
Browse files

blkcg: delete redundant get/put operations for queue 



When calling blkcg_schedule_throttle(), for the same queue,
redundant get/put operations can be removed.

Signed-off-by: default avatarChunguang Xu <brookxu@tencent.com>
Acked-by: default avatarTejun Heo <tj@kernel.org>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 2c2b9fd6

block/blk-cgroup.c

+8 −5
Original line number Diff line number Diff line
@@ -1757,12 +1757,15 @@ void blkcg_schedule_throttle(struct request_queue *q, bool use_memdelay) 
	if (unlikely(current->flags & PF_KTHREAD))

		return;



	if (current->throttle_queue != q) {

		if (!blk_get_queue(q))

			return;



		if (current->throttle_queue)

			blk_put_queue(current->throttle_queue);

		current->throttle_queue = q;

	}



	if (use_memdelay)

		current->use_memdelay = use_memdelay;

	set_notify_resume(current);