int page_referenced(struct page *, int is_locked, int ignore_token);
int try_to_unmap(struct 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 **);
+
/*
* Used by swapoff to help locate where page is expected in vma.
*/