--- Net2/vm/vm_pager.h	2018/04/24 18:03:57	1.1.1.1
+++ Net2/vm/vm_pager.h	2018/04/24 18:14:59	1.1.1.2
@@ -35,17 +35,18 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	@(#)vm_pager.h	7.2 (Berkeley) 4/20/91
+ *	from: @(#)vm_pager.h	7.2 (Berkeley) 4/20/91
+ *	vm_pager.h,v 1.3 1993/05/20 03:59:43 cgd Exp
  */
 
+#ifndef _VM_VM_PAGER_H_
+#define _VM_VM_PAGER_H_
+
 /*
  * Pager routine interface definition.
  * For BSD we use a cleaner version of the internal pager interface.
  */
 
-#ifndef	_VM_PAGER_
-#define	_VM_PAGER_
-
 struct	pager_struct {
 	queue_head_t	pg_list;	/* links for list management */
 	caddr_t		pg_handle;	/* external handle (vp, dev, fp) */
@@ -103,4 +104,4 @@ void		vm_pager_sync();
 extern struct pagerops *dfltpagerops;
 #endif
 
-#endif	/* _VM_PAGER_ */
+#endif /* !_VM_VM_PAGER_H_ */