diff --git a/include/linux/mm.h b/include/linux/mm.h
index 9ebc65a..ceb1e4a 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1307,12 +1307,14 @@
  * CONFIG_ARCH_POPULATES_NODE_MAP
  */
 extern void free_area_init_nodes(unsigned long *max_zone_pfn);
+#ifndef CONFIG_HAVE_MEMBLOCK_NODE_MAP
 extern void add_active_range(unsigned int nid, unsigned long start_pfn,
 					unsigned long end_pfn);
 extern void remove_active_range(unsigned int nid, unsigned long start_pfn,
 					unsigned long end_pfn);
 extern void remove_all_active_ranges(void);
 void sort_node_map(void);
+#endif
 unsigned long node_map_pfn_alignment(void);
 unsigned long __absent_pages_in_range(int nid, unsigned long start_pfn,
 						unsigned long end_pfn);