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-rw-r--r--mm/page_ext.c13
1 files changed, 2 insertions, 11 deletions
diff --git a/mm/page_ext.c b/mm/page_ext.c
index 121dcffc4ec1..88ccc044b09a 100644
--- a/mm/page_ext.c
+++ b/mm/page_ext.c
@@ -59,9 +59,6 @@
static struct page_ext_operations *page_ext_ops[] = {
&debug_guardpage_ops,
-#ifdef CONFIG_PAGE_POISONING
- &page_poisoning_ops,
-#endif
#ifdef CONFIG_PAGE_OWNER
&page_owner_ops,
#endif
@@ -127,15 +124,12 @@ struct page_ext *lookup_page_ext(struct page *page)
struct page_ext *base;
base = NODE_DATA(page_to_nid(page))->node_page_ext;
-#if defined(CONFIG_DEBUG_VM) || defined(CONFIG_PAGE_POISONING)
+#if defined(CONFIG_DEBUG_VM)
/*
* The sanity checks the page allocator does upon freeing a
* page can reach here before the page_ext arrays are
* allocated when feeding a range of pages to the allocator
* for the first time during bootup or memory hotplug.
- *
- * This check is also necessary for ensuring page poisoning
- * works as expected when enabled
*/
if (unlikely(!base))
return NULL;
@@ -204,15 +198,12 @@ struct page_ext *lookup_page_ext(struct page *page)
{
unsigned long pfn = page_to_pfn(page);
struct mem_section *section = __pfn_to_section(pfn);
-#if defined(CONFIG_DEBUG_VM) || defined(CONFIG_PAGE_POISONING)
+#if defined(CONFIG_DEBUG_VM)
/*
* The sanity checks the page allocator does upon freeing a
* page can reach here before the page_ext arrays are
* allocated when feeding a range of pages to the allocator
* for the first time during bootup or memory hotplug.
- *
- * This check is also necessary for ensuring page poisoning
- * works as expected when enabled
*/
if (!section->page_ext)
return NULL;