diff --git a/sys/compat/linuxkpi/common/include/linux/gfp.h b/sys/compat/linuxkpi/common/include/linux/gfp.h
--- a/sys/compat/linuxkpi/common/include/linux/gfp.h
+++ b/sys/compat/linuxkpi/common/include/linux/gfp.h
@@ -84,15 +84,6 @@
 	int pagecnt_bias;
 };
 
-/*
- * Resolve a page into a virtual address:
- *
- * NOTE: This function only works for pages allocated by the kernel.
- */
-void *linux_page_address(struct page *);
-
-#define	page_address(page) linux_page_address(page)
-
 /*
  * Page management for unmapped pages:
  */
diff --git a/sys/compat/linuxkpi/common/include/linux/mm.h b/sys/compat/linuxkpi/common/include/linux/mm.h
--- a/sys/compat/linuxkpi/common/include/linux/mm.h
+++ b/sys/compat/linuxkpi/common/include/linux/mm.h
@@ -178,6 +178,14 @@
 	return (order);
 }
 
+/*
+ * Resolve a page into a virtual address:
+ *
+ * NOTE: This function only works for pages allocated by the kernel.
+ */
+void *linux_page_address(struct page *);
+#define	page_address(page) linux_page_address(page)
+
 static inline void *
 lowmem_page_address(struct page *page)
 {