Commit cc7ecc25 authored by Josef Bacik's avatar Josef Bacik Committed by Jens Axboe
Browse files

blk-cgroup: hold the queue ref during throttling 



The blkg lifetime is protected by the queue lifetime, so we need to put
the queue _after_ we're done using the blkg.

Signed-off-by: default avatarJosef Bacik <josef@toxicpanda.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 52a1199c

block/blk-cgroup.c

+1 −1
Original line number Diff line number Diff line
@@ -1759,10 +1759,10 @@ void blkcg_maybe_throttle_current(void) 
	if (!blkg)

		goto out;

	rcu_read_unlock();

	blk_put_queue(q);



	blkcg_maybe_throttle_blkg(blkg, use_memdelay);

	blkg_put(blkg);

	blk_put_queue(q);

	return;

out:

	rcu_read_unlock();