diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index f46ea71b4ffd..3b3b1c7641fe 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -102,6 +102,7 @@ extern unsigned long __offline_isolated_pages(unsigned long start_pfn,
 
 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 8b485900d941..690426fdb40a 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -49,8 +49,6 @@
  * 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)
 {
 	kernel_map_pages(page, 1 << order, 1);
 	__free_pages_core(page, order);
@@ -627,6 +625,7 @@ 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_range(unsigned long start_pfn, unsigned long nr_pages,
 			void *arg)