From: Paul Menage <menage@google.com>

This removes the need for people to remember to pass the -n flag to echo when
writing values to cgroup control files.

Signed-off-by: Paul Menage <menage@google.com>
Cc: "Li Zefan" <lizf@cn.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Paul Jackson <pj@sgi.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "YAMAMOTO Takashi" <yamamoto@valinux.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/cgroup.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff -puN kernel/cgroup.c~cgroup-api-files-strip-all-trailing-whitespace-in-cgroup_write_u64 kernel/cgroup.c
--- a/kernel/cgroup.c~cgroup-api-files-strip-all-trailing-whitespace-in-cgroup_write_u64
+++ a/kernel/cgroup.c
@@ -1321,10 +1321,7 @@ static ssize_t cgroup_write_u64(struct c
 		return -EFAULT;
 
 	buffer[nbytes] = 0;     /* nul-terminate */
-
-	/* strip newline if necessary */
-	if (nbytes && (buffer[nbytes-1] == '\n'))
-		buffer[nbytes-1] = 0;
+	strstrip(buffer);
 	val = simple_strtoull(buffer, &end, 0);
 	if (*end)
 		return -EINVAL;
_