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linux_compat: move kmemdup() from ubifs.c to linux_compat.c

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linux_compat.c is the best place for kmemdup(), which is currenly used
only in ubifs.c, but will also be used when other kernel files
(in my case, lib/crypto/x509_cert_parser.c and pkcs7_parser.c) will be
imported. So just move it.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
AKASHI Takahiro 2019-11-13 09:44:47 +09:00 • committed by Tom Rini
parent 31839dc2d2
commit 4839e86892
2 changed files with 20 additions and 18 deletions
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19
fs/ubifs/ubifs.c
View file

@ -18,6 +18,7 @@
#include "ubifs.h" #include "ubifs.h"
#include <u-boot/zlib.h> #include <u-boot/zlib.h>
#include <linux/compat.h>
#include <linux/err.h> #include <linux/err.h>
#include <linux/lzo.h> #include <linux/lzo.h>
@ -70,24 +71,6 @@ struct ubifs_compressor *ubifs_compressors[UBIFS_COMPR_TYPES_CNT];
#ifdef __UBOOT__ #ifdef __UBOOT__
/* from mm/util.c */
/**
* kmemdup - duplicate region of memory
*
* @src: memory region to duplicate
* @len: memory region length
* @gfp: GFP mask to use
*/
void *kmemdup(const void *src, size_t len, gfp_t gfp)
{
void *p;
p = kmalloc(len, gfp);
if (p)
memcpy(p, src, len);
return p;
}
struct crypto_comp { struct crypto_comp {
int compressor; int compressor;

19
lib/linux_compat.c
View file

@ -40,3 +40,22 @@ void *kmem_cache_alloc(struct kmem_cache *obj, int flag)
{ {
return malloc_cache_aligned(obj->sz); return malloc_cache_aligned(obj->sz);
} }
/**
* kmemdup - duplicate region of memory
*
* @src: memory region to duplicate
* @len: memory region length
* @gfp: GFP mask to use
*
* Return: newly allocated copy of @src or %NULL in case of error
*/
void *kmemdup(const void *src, size_t len, gfp_t gfp)
{
void *p;
p = kmalloc(len, gfp);
if (p)
memcpy(p, src, len);
return p;
}