diff --git a/include/linux/balloon_compaction.h b/include/linux/balloon_compaction.h
index eec8994056a4..7757e0e314fd 100644
--- a/include/linux/balloon_compaction.h
+++ b/include/linux/balloon_compaction.h
@@ -59,14 +59,14 @@ struct balloon_dev_info {
 	bool adjust_managed_page_count;
 };
 
-extern struct page *balloon_page_alloc(void);
-extern void balloon_page_enqueue(struct balloon_dev_info *b_dev_info,
-				 struct page *page);
-extern struct page *balloon_page_dequeue(struct balloon_dev_info *b_dev_info);
-extern size_t balloon_page_list_enqueue(struct balloon_dev_info *b_dev_info,
-				      struct list_head *pages);
-extern size_t balloon_page_list_dequeue(struct balloon_dev_info *b_dev_info,
-				     struct list_head *pages, size_t n_req_pages);
+struct page *balloon_page_alloc(void);
+void balloon_page_enqueue(struct balloon_dev_info *b_dev_info,
+		struct page *page);
+struct page *balloon_page_dequeue(struct balloon_dev_info *b_dev_info);
+size_t balloon_page_list_enqueue(struct balloon_dev_info *b_dev_info,
+		struct list_head *pages);
+size_t balloon_page_list_dequeue(struct balloon_dev_info *b_dev_info,
+		struct list_head *pages, size_t n_req_pages);
 
 static inline void balloon_devinfo_init(struct balloon_dev_info *balloon)
 {