diff --git a/include/linux/memory.h b/include/linux/memory.h
index dc4081b6f161e3f697c3280bbf9547aed9bfbea1..e251dc43d0f5ab8faee980ade3cbc3780db499ea 100644
--- a/include/linux/memory.h
+++ b/include/linux/memory.h
@@ -70,21 +70,15 @@ static inline void unregister_memory_notifier(struct notifier_block *nb)
 {
 }
 #else
-extern int register_memory(struct memory_block *, struct mem_section *section, struct node *);
 extern int register_new_memory(struct mem_section *);
 extern int unregister_memory_section(struct mem_section *);
 extern int memory_dev_init(void);
-extern int register_memory_notifier(struct notifier_block *nb);
-extern void unregister_memory_notifier(struct notifier_block *nb);
+extern int remove_memory_block(unsigned long, struct mem_section *, int);
 
 #define CONFIG_MEM_BLOCK_SIZE	(PAGES_PER_SECTION<<PAGE_SHIFT)
 
-extern int invalidate_phys_mapping(unsigned long, unsigned long);
 struct notifier_block;
 
-extern int register_memory_notifier(struct notifier_block *nb);
-extern void unregister_memory_notifier(struct notifier_block *nb);
-
 #endif /* CONFIG_MEMORY_HOTPLUG */
 
 #define hotplug_memory_notifier(fn, pri) {			\