--- zzzz-none-000/linux-4.1.52/include/linux/page_ext.h	2018-05-28 02:26:45.000000000 +0000
+++ bcm63-7530ax-731/linux-4.1.52/include/linux/page_ext.h	2022-03-02 11:37:13.000000000 +0000
@@ -64,11 +64,11 @@
 #else /* !CONFIG_PAGE_EXTENSION */
 struct page_ext;
 
-static inline void pgdat_page_ext_init(struct pglist_data *pgdat)
+static inline void pgdat_page_ext_init(struct pglist_data *pgdat __maybe_unused)
 {
 }
 
-static inline struct page_ext *lookup_page_ext(struct page *page)
+static inline struct page_ext *lookup_page_ext(struct page *page __maybe_unused)
 {
 	return NULL;
 }