Use newly introduced memchr_inv for page verification.
Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
---
mm/debug-pagealloc.c | 8 +++-----
1 files changed, 3 insertions(+), 5 deletions(-)
diff --git a/mm/debug-pagealloc.c b/mm/debug-pagealloc.c
index 5afe80c..d8470d4 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/highmem.h>
#include <linux/page-debug-flags.h>
@@ -62,11 +63,8 @@ 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--) {
--
1.7.4.4
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