From 316eb661f125397d46f16f94e3c81ad3dc4c1233 Mon Sep 17 00:00:00 2001
From: Tao Ma <boyu.mt@taobao.com>
Date: Thu, 8 Nov 2012 21:36:38 +0800
Subject: [PATCH] cgroup: set 'start' with the right value in cgroup_path.
'start' is set to buf + buflen and do the '--' immediately.
Just set it to 'buf + buflen - 1' directly.
Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
---
kernel/cgroup.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 3070164e2036..998ab5957c6a 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1770,9 +1770,9 @@ int cgroup_path(const struct cgroup *cgrp, char *buf, int buflen)
return 0;
}
- start = buf + buflen;
+ start = buf + buflen - 1;
- *--start = '\0';
+ *start = '\0';
for (;;) {
int len = dentry->d_name.len;
--
2.34.1