Commit a581563f authored by Peng Wang's avatar Peng Wang Committed by Tejun Heo
Browse files

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: default avatarPeng Wang <rocking@whu.edu.cn>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 85db0023
......@@ -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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