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authorPaolo Valente <paolo.valente@linaro.org>2018-01-09 12:27:59 +0300
committerJens Axboe <axboe@kernel.dk>2018-01-09 18:45:25 +0300
commit0d52af590552473666da5b6111e7182d6cd23f92 (patch)
treee83a75df643ef3dd663e2b260328888ce9220d36 /block
parent52257ffbfcaf58d247b13fb148e27ed17c33e526 (diff)
downloadlinux-0d52af590552473666da5b6111e7182d6cd23f92.tar.xz
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>
Diffstat (limited to 'block')
-rw-r--r--block/bfq-iosched.c3
1 files changed, 3 insertions, 0 deletions
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