linux-kernel - [PATCH -next] cgroup: remove set but not used variable 'cgrp'

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Message-ID: <20190424080614.11876-1-yuehaibing@huawei.com>
Date:   Wed, 24 Apr 2019 16:06:14 +0800
From:   Yue Haibing <yuehaibing@...wei.com>
To:     <tj@...nel.org>, <hannes@...xchg.org>, <lizefan@...wei.com>
CC:     <linux-kernel@...r.kernel.org>, <cgroups@...r.kernel.org>,
        YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH -next] cgroup: remove set but not used variable 'cgrp'

From: YueHaibing <yuehaibing@...wei.com>

Fixes gcc '-Wunused-but-set-variable' warning:

kernel/cgroup/cgroup.c: In function 'cgroup_post_fork':
kernel/cgroup/cgroup.c:5946:19: warning: variable 'cgrp' set but not used [-Wunused-but-set-variable]

It is never used since introduction in
commit 76f969e8948d ("cgroup: cgroup v2 freezer")

Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 kernel/cgroup/cgroup.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 6f09f9b..c9f208d 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