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authorAkinobu Mita <akinobu.mita@gmail.com>2011-10-31 17:08:10 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-10-31 17:30:47 -0700
commit8c5fb8eadde41f67c61a7ac2d3246dab87bf7020 (patch)
tree77d333e6e5f939c43ee57f16f499764e3ddb815a /mm
parent798248206b59acc6e1238c778281419c041891a7 (diff)
downloadlinux-stericsson-8c5fb8eadde41f67c61a7ac2d3246dab87bf7020.tar.gz
mm/debug-pagealloc.c: use memchr_inv
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>
Diffstat (limited to 'mm')
-rw-r--r--mm/debug-pagealloc.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/mm/debug-pagealloc.c b/mm/debug-pagealloc.c
index a4b6d707a31f..2618933efdb3 100644
--- a/mm/debug-pagealloc.c
+++ b/mm/debug-pagealloc.c
@@ -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--) {