From: Alexey Dobriyan <adobriyan@gmail.com>
To: akpm@linux-foundation.org
Cc: linux-mm@kvack.org, cl@linux.com, penberg@kernel.org,
rientjes@google.com, iamjoonsoo.kim@lge.com,
Alexey Dobriyan <adobriyan@gmail.com>
Subject: [PATCH 20/23] slub: make slab_index() return unsigned int
Date: Fri, 24 Nov 2017 01:16:25 +0300 [thread overview]
Message-ID: <20171123221628.8313-20-adobriyan@gmail.com> (raw)
In-Reply-To: <20171123221628.8313-1-adobriyan@gmail.com>
slab_index() returns index of an object within a slab
which is at most u15 (or u16?).
Iterators additionally guarantee that "p >= addr".
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---
mm/slub.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/slub.c b/mm/slub.c
index ce71665e266c..04c8348b8ce9 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;
}
--
2.13.6
--
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next prev parent reply other threads:[~2017-11-23 22:17 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-23 22:16 [PATCH 01/23] slab: make kmalloc_index() return "unsigned int" Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 02/23] slab: make kmalloc_size() " Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 03/23] slab: create_kmalloc_cache() works with 32-bit sizes Alexey Dobriyan
2017-11-24 1:06 ` Matthew Wilcox
2017-11-27 10:21 ` Alexey Dobriyan
2017-11-27 13:56 ` Matthew Wilcox
2017-11-23 22:16 ` [PATCH 04/23] slab: create_boot_cache() only " Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 05/23] slab: kmem_cache_create() " Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 06/23] slab: make size_index[] array u8 Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 07/23] slab: make size_index_elem() unsigned int Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 08/23] slub: make ->remote_node_defrag_ratio " Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 09/23] slub: make ->max_attr_size " Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 10/23] slub: make ->red_left_pad " Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 11/23] slub: make ->reserved " Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 12/23] slub: make ->align " Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 13/23] slub: make ->inuse " Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 14/23] slub: make ->cpu_partial " Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 15/23] slub: make ->offset " Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 16/23] slub: make ->object_size " Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 17/23] slub: make ->size " Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 18/23] slab: make kmem_cache_flags accept 32-bit object size Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 19/23] kasan: make kasan_cache_create() work with 32-bit slab caches Alexey Dobriyan
2017-11-24 22:29 ` kbuild test robot
2017-11-23 22:16 ` Alexey Dobriyan [this message]
2017-11-23 22:16 ` [PATCH 21/23] slub: make struct kmem_cache_order_objects::x unsigned int Alexey Dobriyan
2017-11-24 17:31 ` Christopher Lameter
2017-11-27 10:17 ` Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 22/23] slub: make size_from_object() return " Alexey Dobriyan
2017-11-23 22:16 ` [PATCH 23/23] slab: use 32-bit arithmetic in freelist_randomize() Alexey Dobriyan
2017-11-28 0:36 ` [PATCH 01/23] slab: make kmalloc_index() return "unsigned int" Andrew Morton
2017-11-28 18:46 ` Christopher Lameter
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