The 'cgrp' is set but not used in commit <76f969e8948d8> ("cgroup: cgroup v2 freezer"). Remove it to avoid [-Wunused-but-set-variable] warning. Cc: Roman Gushchin <guro@xxxxxx> Cc: Tejun Heo <tj@xxxxxxxxxx> Signed-off-by: Shaokun Zhang <zhangshaokun@xxxxxxxxxxxxx> --- kernel/cgroup/cgroup.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index 6f09f9b293db..c9f208d944ba 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -5943,11 +5943,8 @@ void cgroup_post_fork(struct task_struct *child) * the task into the frozen state. */ if (unlikely(cgroup_task_freeze(child))) { - struct cgroup *cgrp; - spin_lock(&child->sighand->siglock); WARN_ON_ONCE(child->frozen); - cgrp = cset->dfl_cgrp; child->jobctl |= JOBCTL_TRAP_FREEZE; spin_unlock(&child->sighand->siglock); -- 2.7.4