linux-kernel - [PATCH] cgroup: Remove unnecessary call to strstrip()

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Date:   Tue, 8 Sep 2020 13:33:50 +0000
From:   Hao Lee <haolee.swjtu@...il.com>
To:     tj@...nel.org
Cc:     lizefan@...wei.com, hannes@...xchg.org, cgroups@...r.kernel.org,
        linux-kernel@...r.kernel.org, haolee.swjtu@...il.com
Subject: [PATCH] cgroup: Remove unnecessary call to strstrip()

The string buf will be stripped in cgroup_procs_write_start() before it
is converted to int, so remove this unnecessary call to strstrip().

Signed-off-by: Hao Lee <haolee.swjtu@...il.com>
---
 kernel/cgroup/cgroup.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index b6714166106d..90ee7e73eb2e 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -4772,14 +4772,12 @@ static ssize_t cgroup_threads_write(struct kernfs_open_file *of,
 {
 	struct cgroup *src_cgrp, *dst_cgrp;
 	struct task_struct *task;
 	ssize_t ret;
 	bool locked;
 
-	buf = strstrip(buf);
-
 	dst_cgrp = cgroup_kn_lock_live(of->kn, false);
 	if (!dst_cgrp)
 		return -ENODEV;
 
 	task = cgroup_procs_write_start(buf, false, &locked);
 	ret = PTR_ERR_OR_ZERO(task);
-- 
2.24.1