Index: linux-2.6.18-rc6-mm1/include/linux/mm.h
===================================================================
--- linux-2.6.18-rc6-mm1.orig/include/linux/mm.h	2006-09-11 17:34:57.000000000 -0500
+++ linux-2.6.18-rc6-mm1/include/linux/mm.h	2006-09-11 18:03:47.086235115 -0500
@@ -492,18 +492,26 @@
 	return (page->flags >> ZONES_PGSHIFT) & ZONES_MASK;
 }
 
+#ifdef MULTIZONE
 struct zone;
 extern struct zone *zone_table[];
+#endif
 
 static inline int page_zone_id(struct page *page)
 {
 	return (page->flags >> ZONETABLE_PGSHIFT) & ZONETABLE_MASK;
 }
+
 static inline struct zone *page_zone(struct page *page)
 {
+#ifdef MULTIZONE
 	return zone_table[page_zone_id(page)];
+#else
+	return &NODE_DATA((page->flags >> NODES_PGSHIFT) & NODES_MASK)->node_zones[0];
+#endif
 }
 
+
 static inline unsigned long zone_to_nid(struct zone *zone)
 {
 	return get_pgdat(zone)->node_id;
Index: linux-2.6.18-rc6-mm1/mm/page_alloc.c
===================================================================
--- linux-2.6.18-rc6-mm1.orig/mm/page_alloc.c	2006-09-11 17:34:57.000000000 -0500
+++ linux-2.6.18-rc6-mm1/mm/page_alloc.c	2006-09-11 17:54:15.564148758 -0500
@@ -90,8 +90,10 @@
  * Used by page_zone() to look up the address of the struct zone whose
  * id is encoded in the upper bits of page->flags
  */
+#ifdef MULTIZONE
 struct zone *zone_table[1 << ZONETABLE_SHIFT] __read_mostly;
 EXPORT_SYMBOL(zone_table);
+#endif
 
 static char *zone_names[MAX_NR_ZONES] = {
 #ifdef CONFIG_ZONE_DMA
@@ -1823,6 +1825,7 @@
 void zonetable_add(struct zone *zone, int nid, enum zone_type zid,
 		unsigned long pfn, unsigned long size)
 {
+#ifdef MULTIZONE
 	unsigned long snum = pfn_to_section_nr(pfn);
 	unsigned long end = pfn_to_section_nr(pfn + size);
 
@@ -1831,6 +1834,7 @@
 	else
 		for (; snum <= end; snum++)
 			zone_table[ZONETABLE_INDEX(snum, zid)] = zone;
+#endif
 }
 
 #ifndef __HAVE_ARCH_MEMMAP_INIT