From: Andrew Morton <akpm@linux-foundation.org>

show_slab_objects() should return ssize_t as well.  Or at least _something_
signed...

Cc: Christoph Lameter <clameter@sgi.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/slub.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff -puN mm/slub.c~slub-fix-possible-null-pointer-dereference-fix mm/slub.c
--- a/mm/slub.c~slub-fix-possible-null-pointer-dereference-fix
+++ a/mm/slub.c
@@ -3575,8 +3575,8 @@ enum slab_stat_type {
 #define SO_OBJECTS	(1 << SL_OBJECTS)
 #define SO_TOTAL	(1 << SL_TOTAL)
 
-static unsigned long show_slab_objects(struct kmem_cache *s,
-			char *buf, unsigned long flags)
+static ssize_t show_slab_objects(struct kmem_cache *s, char *buf,
+				unsigned long flags)
 {
 	unsigned long total = 0;
 	int cpu;
_