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blk-cgroup: remove blkcg_drain_queue

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Since blk_drain_queue had already been removed, so this function
is not needed anymore.

Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Guoqing Jiang
2019-12-12 16:52:00 +01:00
committed by Jens Axboe
parent ecb6186cf7
commit 5addeae1be
2 changed files with 0 additions and 22 deletions
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20
block/blk-cgroup.c
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@@ -1061,26 +1061,6 @@ err_unlock:
return PTR_ERR(blkg);
}
/**
* blkcg_drain_queue - drain blkcg part of request_queue
* @q: request_queue to drain
*
* Called from blk_drain_queue(). Responsible for draining blkcg part.
*/
void blkcg_drain_queue(struct request_queue *q)
{
lockdep_assert_held(&q->queue_lock);
/*
* @q could be exiting and already have destroyed all blkgs as
* indicated by NULL root_blkg. If so, don't confuse policies.
*/
if (!q->root_blkg)
return;
blk_throtl_drain(q);
}
/**
* blkcg_exit_queue - exit and release blkcg part of request_queue
* @q: request_queue being released