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-rw-r--r--include/linux/mmzone.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 4733d35d822..b79633d3a97 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -284,6 +284,8 @@ typedef struct pglist_data {
#define node_present_pages(nid) (NODE_DATA(nid)->node_present_pages)
#define node_spanned_pages(nid) (NODE_DATA(nid)->node_spanned_pages)
+#define pgdat_page_nr(pgdat, pagenr) ((pgdat)->node_mem_map + (pagenr))
+#define nid_page_nr(nid, pagenr) pgdat_page_nr(NODE_DATA(nid),(pagenr))
extern struct pglist_data *pgdat_list;