[PATCH 04/10] CGroup API files: Strip all trailing whitespace in cgroup_write_u64

[menage@google.com]

[-- Attachment #1: cgroup_write_uint_strstrip.patch --]
[-- Type: text/plain, Size: 786 bytes --]

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>

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

Index: cgroup-2.6.25-rc2-mm1/kernel/cgroup.c
===================================================================
--- cgroup-2.6.25-rc2-mm1.orig/kernel/cgroup.c
+++ cgroup-2.6.25-rc2-mm1/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;

--