slab: mark kmalloc machinery as __ro_after_init
Subsystems (2)
A message that is not in the archive (sent off-list or not yet received): 20180226203011.GA6510@avx2
PATCH 1/1 slab: mark kmalloc machinery as __ro_after_init
kmalloc caches aren't relocated after being set up neither does "size_index" array.
Signed-off-by Alexey Dobriyan <[email protected]>
---
mm/slab_common.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
mm/slab_common.c +4 -3
@@ -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 */
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