From 0d52af590552473666da5b6111e7182d6cd23f92 Mon Sep 17 00:00:00 2001 From: Paolo Valente Date: Tue, 9 Jan 2018 10:27:59 +0100 Subject: [PATCH] block, bfq: release oom-queue ref to root group on exit MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Tested-by: Holger Hoffstätte Signed-off-by: Paolo Valente Signed-off-by: Jens Axboe --- block/bfq-iosched.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c index 7bd789da7a29..7c0b7f60811c 100644 --- a/block/bfq-iosched.c +++ b/block/bfq-iosched.c @@ -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 -- 2.11.0