From 72e0fe2241ce113cbba339ca8c2450b167774530 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Mon, 1 Jul 2024 12:12:58 -0700 Subject: [PATCH] mm/slab: Introduce kmem_buckets typedef Encapsulate the concept of a single set of kmem_caches that are used for the kmalloc size buckets. Redefine kmalloc_caches as an array of these buckets (for the different global cache buckets). Signed-off-by: Kees Cook Signed-off-by: Vlastimil Babka --- include/linux/slab.h | 5 +++-- mm/slab_common.c | 3 +-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/include/linux/slab.h b/include/linux/slab.h index 640cea6e6323..922bf15794f7 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -426,8 +426,9 @@ enum kmalloc_cache_type { NR_KMALLOC_TYPES }; -extern struct kmem_cache * -kmalloc_caches[NR_KMALLOC_TYPES][KMALLOC_SHIFT_HIGH + 1]; +typedef struct kmem_cache * kmem_buckets[KMALLOC_SHIFT_HIGH + 1]; + +extern kmem_buckets kmalloc_caches[NR_KMALLOC_TYPES]; /* * Define gfp bits that should not be set for KMALLOC_NORMAL. diff --git a/mm/slab_common.c b/mm/slab_common.c index 7272ef7bc55f..ff60f91e4edc 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -654,8 +654,7 @@ static struct kmem_cache *__init create_kmalloc_cache(const char *name, return s; } -struct kmem_cache * -kmalloc_caches[NR_KMALLOC_TYPES][KMALLOC_SHIFT_HIGH + 1] __ro_after_init = +kmem_buckets kmalloc_caches[NR_KMALLOC_TYPES] __ro_after_init = { /* initialization for https://llvm.org/pr42570 */ }; EXPORT_SYMBOL(kmalloc_caches);