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
@@ -184,7 +184,7 @@
  *
  * NOTE: This function only works for pages allocated by the kernel.
  */
-void *linux_page_address(struct page *);
+void *linux_page_address(const struct page *);
 #define	page_address(page) linux_page_address(page)
 
 static inline void *
diff --git a/sys/compat/linuxkpi/common/src/linux_page.c b/sys/compat/linuxkpi/common/src/linux_page.c
--- a/sys/compat/linuxkpi/common/src/linux_page.c
+++ b/sys/compat/linuxkpi/common/src/linux_page.c
@@ -83,7 +83,7 @@
 }
 
 void *
-linux_page_address(struct page *page)
+linux_page_address(const struct page *page)
 {
 
 	if (page->object != kernel_object) {