slub: make size_from_object() return unsigned int

Function returns size of the object without red zone which can't be
negative.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Alexey Dobriyan <[email protected]>
Acked-by: Christoph Lameter <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/mm/slub.c b/mm/slub.c
index 21e9de8f8d3a94d38b66bc1ac1557b10af6c454e..f48d942a487e3d7b74aae1016393d9728afe345f 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -466,7 +466,7 @@ static void get_map(struct kmem_cache *s, struct page *page, unsigned long *map)
                set_bit(slab_index(p, s, addr), map);
 }
 
-static inline int size_from_object(struct kmem_cache *s)
+static inline unsigned int size_from_object(struct kmem_cache *s)
 {
        if (s->flags & SLAB_RED_ZONE)
                return s->size - s->red_left_pad;