Notify pmap when a page is freed on the alpha to allow it to clean up

its emulated modified/referenced bits.

sys/vm/pmap.h

@@ -61,7 +61,7 @@
  * any improvements or extensions that they make and grant Carnegie the
  * rights to redistribute these changes.
  *
- * $Id: pmap.h,v 1.26 1998/01/22 17:30:30 dyson Exp $
+ * $Id: pmap.h,v 1.27 1998/02/01 20:08:39 bde Exp $
  */
 
 /*
@@ -90,6 +90,9 @@ typedef struct pmap_statistics *pmap_statistics_t;
 
 struct proc;
 
+#ifdef __alpha__
+void		 pmap_page_is_free __P((vm_page_t m));
+#endif
 void		 pmap_change_wiring __P((pmap_t, vm_offset_t, boolean_t));
 void		 pmap_clear_modify __P((vm_offset_t pa));
 void		 pmap_clear_reference __P((vm_offset_t pa));

sys/vm/vm_page.c

@@ -34,7 +34,7 @@
  * SUCH DAMAGE.
  *
  *	from: @(#)vm_page.c	7.4 (Berkeley) 5/7/91
- *	$Id: vm_page.c,v 1.103 1998/07/11 07:46:14 bde Exp $
+ *	$Id: vm_page.c,v 1.104 1998/07/15 04:17:55 bde Exp $
  */
 
 /*
@@ -1117,6 +1117,10 @@ vm_page_freechk_and_unqueue(m)
 		}
 	}
 
+#ifdef __alpha__
+	pmap_page_is_free(m);
+#endif
+
 	return 1;
 }