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authorAlexey Dobriyan <adobriyan@gmail.com>2018-04-05 16:21:35 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-04-05 21:36:24 -0700
commit284b50ddcf32e3fe1cd39bfc9ad803704e6ca338 (patch)
tree47c2092f2a0c34e0e44d31034b368fe2f1913054 /mm/slub.c
parent7bbdb81ee3de73f2381ceec1bbee831f4c913b5c (diff)
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slub: make slab_index() return unsigned int
slab_index() returns index of an object within a slab which is at most u15 (or u16?). Iterators additionally guarantee that "p >= addr". Link: http://lkml.kernel.org/r/20180305200730.15812-22-adobriyan@gmail.com Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slub.c')
-rw-r--r--mm/slub.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/slub.c b/mm/slub.c
index a10cf661cdae..5c5b9aed10a1 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -311,7 +311,7 @@ static inline void set_freepointer(struct kmem_cache *s, void *object, void *fp)
__p += (__s)->size, __idx++)
/* Determine object index from a given position */
-static inline int slab_index(void *p, struct kmem_cache *s, void *addr)
+static inline unsigned int slab_index(void *p, struct kmem_cache *s, void *addr)
{
return (p - addr) / s->size;
}