diff options
| -rw-r--r-- | 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 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--) { |