slab: make create_kmalloc_cache() work with 32-bit sizes
KMALLOC_MAX_CACHE_SIZE is 32-bit so is the largest kmalloc cache size.
Christoph said:
:
: Ok SLABs maximum allocation size is limited to 32M (see
: include/linux/slab.h:
:
: #define KMALLOC_SHIFT_HIGH ((MAX_ORDER + PAGE_SHIFT - 1) <= 25 ? \
: (MAX_ORDER + PAGE_SHIFT - 1) : 25)
:
: And SLUB/SLOB pass all larger requests to the page allocator anyways.
Link: http://lkml.kernel.org/r/20180305200730.15812-4-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>
diff --git a/mm/slab.h b/mm/slab.h
index 5181323..c888796 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -77,7 +77,7 @@ extern struct kmem_cache *kmem_cache;
/* A table of kmalloc cache names and sizes */
extern const struct kmalloc_info_struct {
const char *name;
- unsigned long size;
+ unsigned int size;
} kmalloc_info[];
#ifndef CONFIG_SLOB
@@ -93,9 +93,9 @@ struct kmem_cache *kmalloc_slab(size_t, gfp_t);
/* Functions provided by the slab allocators */
int __kmem_cache_create(struct kmem_cache *, slab_flags_t flags);
-extern struct kmem_cache *create_kmalloc_cache(const char *name, size_t size,
- slab_flags_t flags, size_t useroffset,
- size_t usersize);
+struct kmem_cache *create_kmalloc_cache(const char *name, unsigned int size,
+ slab_flags_t flags, unsigned int useroffset,
+ unsigned int usersize);
extern void create_boot_cache(struct kmem_cache *, const char *name,
size_t size, slab_flags_t flags, size_t useroffset,
size_t usersize);