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-rw-r--r--mm/page_alloc.c20
1 files changed, 19 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index a0de15f46987..9faa7ad95ac5 100644
--- a/mm/page_alloc.c
+++ b/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);