Commit 0d52af59 authored Jan 09, 2018 by Paolo Valente Committed by Jens Axboe Jan 09, 2018

block, bfq: release oom-queue ref to root group on exit



On scheduler init, a reference to the root group, and a reference to
its corresponding blkg are taken for the oom queue. Yet these
references are not released on scheduler exit, which prevents these
objects from be freed. This commit adds the missing reference
releases.

Reported-by: Davide Ferrari <davideferrari8@gmail.com>
Tested-by: Holger Hoffstätte <holger@applied-asynchrony.com>
Signed-off-by: Paolo Valente <paolo.valente@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent 52257ffb

block/bfq-iosched.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -4893,6 +4893,9 @@ static void bfq_exit_queue(struct elevator_queue *e)

		hrtimer_cancel(&bfqd->idle_slice_timer);

		/* release oom-queue reference to root group */
		bfqg_and_blkg_put(bfqd->root_group);

		#ifdef CONFIG_BFQ_GROUP_IOSCHED
		blkcg_deactivate_policy(bfqd->queue, &blkcg_policy_bfq);
		#else