Messages in this thread Patch in this message | | | From | Akinobu Mita <> | Subject | [PATCH 4/4] debug-pagealloc: use memchr_inv | Date | Tue, 23 Aug 2011 01:29:08 +0900 |
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Use newly introduced memchr_inv for page verification.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> --- 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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