--- Net2/vm/queue.h	2018/04/24 18:03:57	1.1.1.1
+++ Net2/vm/queue.h	2018/04/24 18:15:03	1.1.1.2
@@ -33,7 +33,8 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	@(#)queue.h	7.3 (Berkeley) 4/21/91
+ *	from: @(#)queue.h	7.3 (Berkeley) 4/21/91
+ *	queue.h,v 1.3 1993/05/20 03:59:14 cgd Exp
  *
  *
  * Copyright (c) 1987, 1990 Carnegie-Mellon University.
@@ -62,13 +63,13 @@
  * rights to redistribute these changes.
  */
 
+#ifndef _VM_QUEUE_H_
+#define _VM_QUEUE_H_
+
 /*
  *	Type definitions for generic queues.
  */
 
-#ifndef	_QUEUE_H_
-#define	_QUEUE_H_
-
 struct queue_entry {
 	struct queue_entry	*next;		/* next element */
 	struct queue_entry	*prev;		/* previous element */
@@ -130,4 +131,4 @@ typedef	struct queue_entry	*queue_entry_
 	queue_remove((h), (e), t, f);				\
 }
 
-#endif	/* !_QUEUE_H_ */
+#endif /* !_VM_QUEUE_H_ */