1 files changed, 16 insertions, 1 deletions

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 3693f1a52788..59855b8718a0 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -58,6 +58,7 @@ enum zone_stat_item {
         NR_WRITEBACK,
         NR_UNSTABLE_NFS,        /* NFS unstable pages */
         NR_BOUNCE,
+        NR_VMSCAN_WRITE,
 #ifdef CONFIG_NUMA
         NUMA_HIT,               /* allocated in intended node */
         NUMA_MISS,              /* allocated in non intended node */
@@ -167,6 +168,7 @@ struct zone {
         unsigned long           lowmem_reserve[MAX_NR_ZONES];
 
 #ifdef CONFIG_NUMA
+        int node;
         /*
          * zone reclaim becomes active if more unmapped pages exist.
          */
@@ -305,6 +307,18 @@ struct zonelist {
         struct zone *zones[MAX_NUMNODES * MAX_NR_ZONES + 1]; // NULL delimited
 };
 
+#ifdef CONFIG_ARCH_POPULATES_NODE_MAP
+struct node_active_region {
+        unsigned long start_pfn;
+        unsigned long end_pfn;
+        int nid;
+};
+#endif /* CONFIG_ARCH_POPULATES_NODE_MAP */
+
+#ifndef CONFIG_DISCONTIGMEM
+/* The array of struct pages - for discontigmem use pgdat->lmem_map */
+extern struct page *mem_map;
+#endif
 
 /*
  * The pg_data_t structure is used in machines with CONFIG_DISCONTIGMEM
@@ -518,7 +532,8 @@ extern struct zone *next_zone(struct zone *zone);
 
 #endif
 
-#ifndef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
+#if !defined(CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID) && \
+        !defined(CONFIG_ARCH_POPULATES_NODE_MAP)
 #define early_pfn_to_nid(nid)  (0UL)
 #endif