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mm/debug-pagealloc.c: use memchr_inv

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Use newly introduced memchr_inv() for page verification.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Akinobu Mita 2011-10-31 17:08:10 -07:00 committed by Linus Torvalds
parent 798248206b
commit 8c5fb8eadd
1 changed files with 3 additions and 5 deletions
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8
mm/debug-pagealloc.c
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@ -1,4 +1,5 @@
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/page-debug-flags.h>
#include <linux/poison.h>
@ -64,11 +65,8 @@ static void check_poison_mem(unsigned char *mem, size_t bytes)
unsigned char *start;
unsigned char *end;
for (start = mem; start < mem + bytes; start++) {
if (*start != PAGE_POISON)
break;
}
if (start == mem + bytes)
start = memchr_inv(mem, PAGE_POISON, bytes);
if (!start)
return;
for (end = mem + bytes - 1; end > start; end--) {