Commit a581563f authored Jul 03, 2019 by Peng Wang Committed by Tejun Heo Jul 23, 2019

cgroup: minor tweak for logic to get cgroup css



We could only handle the case that css exists
and css_try_get_online() fails.

Signed-off-by: Peng Wang <rocking@whu.edu.cn>
Signed-off-by: Tejun Heo <tj@kernel.org>

parent 85db0023

kernel/cgroup/cgroup.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -488,7 +488,7 @@ static struct cgroup_subsys_state cgroup_tryget_css(struct cgroup cgrp,

		rcu_read_lock();
		css = cgroup_css(cgrp, ss);
		if (!css \|\| !css_tryget_online(css))
		if (css && !css_tryget_online(css))
		css = NULL;
		rcu_read_unlock();

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