Commit cc7ecc25 authored Jul 31, 2018 by Josef Bacik Committed by Jens Axboe Aug 01, 2018

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: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jens 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();