From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with ESMTP id 7AF376B016E for ; Mon, 22 Aug 2011 12:27:29 -0400 (EDT) Received: by mail-iy0-f175.google.com with SMTP id 15so11611798iyn.34 for ; Mon, 22 Aug 2011 09:27:28 -0700 (PDT) From: Akinobu Mita Subject: [PATCH 4/4] debug-pagealloc: use memchr_inv Date: Tue, 23 Aug 2011 01:29:08 +0900 Message-Id: <1314030548-21082-5-git-send-email-akinobu.mita@gmail.com> In-Reply-To: <1314030548-21082-1-git-send-email-akinobu.mita@gmail.com> References: <1314030548-21082-1-git-send-email-akinobu.mita@gmail.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org Cc: Akinobu Mita Use newly introduced memchr_inv for page verification. Signed-off-by: Akinobu Mita --- 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 +#include #include #include #include @@ -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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org