From: Alexey Dobriyan <adobriyan@xxxxxxxxx> Subject: 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@xxxxxxxxx Signed-off-by: Alexey Dobriyan <adobriyan@xxxxxxxxx> Acked-by: Christoph Lameter <cl@xxxxxxxxx> Cc: Pekka Enberg <penberg@xxxxxxxxxx> Cc: David Rientjes <rientjes@xxxxxxxxxx> Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/slub.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN mm/slub.c~slub-make-slab_index-return-unsigned-int mm/slub.c --- a/mm/slub.c~slub-make-slab_index-return-unsigned-int +++ a/mm/slub.c @@ -311,7 +311,7 @@ static inline void set_freepointer(struc __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; } _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
