cgroup: Remove unused cgrp variable

The 'cgrp' is set but not used in commit <76f969e8948d8>
("cgroup: cgroup v2 freezer").
Remove it to avoid [-Wunused-but-set-variable] warning.

Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Acked-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 57edcf3..4fe9f7f 100644 (file)
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -5864,11 +5864,8 @@ 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);