1 files changed, 12 insertions, 0 deletions

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 3879d7664dfc..2f0856d14b21 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -722,6 +722,9 @@ typedef struct pglist_data {
         int nr_zones;
 #ifdef CONFIG_FLAT_NODE_MEM_MAP /* means !SPARSEMEM */
         struct page *node_mem_map;
+#ifdef CONFIG_PAGE_EXTENSION
+        struct page_ext *node_page_ext;
+#endif
 #endif
 #ifndef CONFIG_NO_BOOTMEM
         struct bootmem_data *bdata;
@@ -1075,6 +1078,7 @@ static inline unsigned long early_pfn_to_nid(unsigned long pfn)
 #define SECTION_ALIGN_DOWN(pfn) ((pfn) & PAGE_SECTION_MASK)
 
 struct page;
+struct page_ext;
 struct mem_section {
         /*
          * This is, logically, a pointer to an array of struct
@@ -1092,6 +1096,14 @@ struct mem_section {
 
         /* See declaration of similar field in struct zone */
         unsigned long *pageblock_flags;
+#ifdef CONFIG_PAGE_EXTENSION
+        /*
+         * If !SPARSEMEM, pgdat doesn't have page_ext pointer. We use
+         * section. (see page_ext.h about this.)
+         */
+        struct page_ext *page_ext;
+        unsigned long pad;
+#endif
         /*
          * WARNING: mem_section must be a power-of-2 in size for the
          * calculation and use of SECTION_ROOT_MASK to make sense.