diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index 71f27da025b59f55feb13545dab6dbd775defbbb..a67c0ba56f1a3c855cf28d0d63eb6d36715ca0d2 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -91,6 +91,7 @@ extern void __offline_isolated_pages(unsigned long, unsigned long);
 
 typedef void (*online_page_callback_t)(struct page *page, unsigned int order);
 
+extern void generic_online_page(struct page *page, unsigned int order);
 extern int set_online_page_callback(online_page_callback_t callback);
 extern int restore_online_page_callback(online_page_callback_t callback);
 
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 84a7b8a0471afa39a8b80e1f1686a0a2b7620a13..19f653683cc65ed36dba66d4e90e6885f4c0eef1 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -48,8 +48,6 @@
  * and restore_online_page_callback() for generic callback restore.
  */
 
-static void generic_online_page(struct page *page, unsigned int order);
-
 static online_page_callback_t online_page_callback = generic_online_page;
 static DEFINE_MUTEX(online_page_callback_lock);
 
@@ -617,7 +615,7 @@ void __online_page_free(struct page *page)
 }
 EXPORT_SYMBOL_GPL(__online_page_free);
 
-static void generic_online_page(struct page *page, unsigned int order)
+void generic_online_page(struct page *page, unsigned int order)
 {
 	__free_pages_core(page, order);
 	totalram_pages += (1UL << order);
@@ -626,6 +624,7 @@ static void generic_online_page(struct page *page, unsigned int order)
 		totalhigh_pages_add(1UL << order);
 #endif
 }
+EXPORT_SYMBOL_GPL(generic_online_page);
 
 static int online_pages_blocks(unsigned long start, unsigned long nr_pages)
 {