+#if PAGE_SHIFT > IA32_PAGE_SHIFT
+extern int ia32_copy_partial_page_list (struct task_struct *, unsigned long);
+extern void ia32_drop_partial_page_list (struct task_struct *);
+#else
+# define ia32_copy_partial_page_list(a1, a2) 0
+# define ia32_drop_partial_page_list(a1) do { ; } while (0)
+#endif