Commit 5a621e6c authored Aug 02, 2017 by Roman Gushchin Committed by Tejun Heo Aug 02, 2017

cgroup: re-use the parent pointer in cgroup_destroy_locked()



As we already have a pointer to the parent cgroup in
cgroup_destroy_locked(), we don't need to calculate it again
to pass as an argument for cgroup1_check_for_release().

Signed-off-by: Roman Gushchin <guro@fb.com>
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: Waiman Long <longman@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: kernel-team@fb.com
Cc: linux-kernel@vger.kernel.org

parent ec39225c

kernel/cgroup/cgroup.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -5022,7 +5022,7 @@ static int cgroup_destroy_locked(struct cgroup *cgrp)
		tcgrp->nr_dying_descendants++;
		}

		cgroup1_check_for_release(cgroup_parent(cgrp));
		cgroup1_check_for_release(parent);

		/* put the base reference */
		percpu_ref_kill(&cgrp->self.refcnt);