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Commit 1c99ba29 authored by Alexey Dobriyan's avatar Alexey Dobriyan Committed by Linus Torvalds
Browse files

mm/slab_common.c: mark kmalloc machinery as __ro_after_init 

kmalloc caches aren't relocated after being set up neither does
"size_index" array.

Link: http://lkml.kernel.org/r/20180226203519.GA6886@avx2


Signed-off-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Cc: 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 849cf559

mm/slab_common.c

+4 −3
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
#include <linux/poison.h>

#include <linux/interrupt.h>

#include <linux/memory.h>

#include <linux/cache.h>

#include <linux/compiler.h>

#include <linux/module.h>

#include <linux/cpu.h>
@@ -954,11 +955,11 @@ struct kmem_cache *__init create_kmalloc_cache(const char *name, size_t size, 
	return s;

}



struct kmem_cache *kmalloc_caches[KMALLOC_SHIFT_HIGH + 1];

struct kmem_cache *kmalloc_caches[KMALLOC_SHIFT_HIGH + 1] __ro_after_init;

EXPORT_SYMBOL(kmalloc_caches);



#ifdef CONFIG_ZONE_DMA

struct kmem_cache *kmalloc_dma_caches[KMALLOC_SHIFT_HIGH + 1];

struct kmem_cache *kmalloc_dma_caches[KMALLOC_SHIFT_HIGH + 1] __ro_after_init;

EXPORT_SYMBOL(kmalloc_dma_caches);

#endif
@@ -968,7 +969,7 @@ EXPORT_SYMBOL(kmalloc_dma_caches); 
 * of two cache sizes there. The size of larger slabs can be determined using

 * fls.

 */

static s8 size_index[24] = {

static s8 size_index[24] __ro_after_init = {

	3,	/* 8 */

	4,	/* 16 */

	5,	/* 24 */