From 9ba918f29b7b19671be536bf64e2a35a8c85be48 Mon Sep 17 00:00:00 2001
From: Wu Fengguang <fengguang.wu@intel.com>
Date: Wed, 16 Sep 2009 11:50:12 +0200
Subject: [PATCH] --- yaml --- r: 165731 b: refs/heads/master c:
 2a7684a23e9c263c2a1e8b2c0027ad1836a0f9df h: refs/heads/master i:   165729:
 83515b243275cc6dd52178a3140a90ad2d03d207   165727:
 6dde4fd95a01b11bf23377287c482d529bb2cab6 v: v3

---
 [refs]                |  2 +-
 trunk/mm/page_alloc.c | 20 +++++++++++++++++++-
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index 564bbde0e249..bd30c4a7835a 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 888b9f7c58ebe8303bad817cd554df887a683957
+refs/heads/master: 2a7684a23e9c263c2a1e8b2c0027ad1836a0f9df
diff --git a/trunk/mm/page_alloc.c b/trunk/mm/page_alloc.c
index a0de15f46987..9faa7ad95ac5 100644
--- a/trunk/mm/page_alloc.c
+++ b/trunk/mm/page_alloc.c
@@ -234,6 +234,12 @@ static void bad_page(struct page *page)
 	static unsigned long nr_shown;
 	static unsigned long nr_unshown;
 
+	/* Don't complain about poisoned pages */
+	if (PageHWPoison(page)) {
+		__ClearPageBuddy(page);
+		return;
+	}
+
 	/*
 	 * Allow a burst of 60 reports, then keep quiet for that minute;
 	 * or allow a steady drip of one report per second.
@@ -646,7 +652,7 @@ static inline void expand(struct zone *zone, struct page *page,
 /*
  * This page is about to be returned from the page allocator
  */
-static int prep_new_page(struct page *page, int order, gfp_t gfp_flags)
+static inline int check_new_page(struct page *page)
 {
 	if (unlikely(page_mapcount(page) |
 		(page->mapping != NULL)  |
@@ -655,6 +661,18 @@ static int prep_new_page(struct page *page, int order, gfp_t gfp_flags)
 		bad_page(page);
 		return 1;
 	}
+	return 0;
+}
+
+static int prep_new_page(struct page *page, int order, gfp_t gfp_flags)
+{
+	int i;
+
+	for (i = 0; i < (1 << order); i++) {
+		struct page *p = page + i;
+		if (unlikely(check_new_page(p)))
+			return 1;
+	}
 
 	set_page_private(page, 0);
 	set_page_refcounted(page);