-int page_referenced(struct page *, int is_locked, int ignore_token);
-int try_to_unmap(struct page *);
+int page_referenced(struct page *, int is_locked);
+int try_to_unmap(struct page *, int ignore_refs);
+void remove_from_swap(struct page *page);
+
+/*
+ * Called from mm/filemap_xip.c to unmap empty zero page
+ */
+pte_t *page_check_address(struct page *, struct mm_struct *,
+ unsigned long, spinlock_t **);