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diff --git a/vm/vm_fault.h b/vm/vm_fault.h
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+/* 
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ * 
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ * 
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ *	File:	vm/vm_fault.h
+ *
+ *	Page fault handling module declarations.
+ */
+
+#ifndef	_VM_VM_FAULT_H_
+#define _VM_VM_FAULT_H_
+
+#include <mach/kern_return.h>
+
+/*
+ *	Page fault handling based on vm_object only.
+ */
+
+typedef	kern_return_t	vm_fault_return_t;
+#define VM_FAULT_SUCCESS		0
+#define VM_FAULT_RETRY			1
+#define VM_FAULT_INTERRUPTED		2
+#define VM_FAULT_MEMORY_SHORTAGE 	3
+#define VM_FAULT_FICTITIOUS_SHORTAGE 	4
+#define VM_FAULT_MEMORY_ERROR		5
+
+extern void vm_fault_init();
+extern vm_fault_return_t vm_fault_page();
+
+extern void		vm_fault_cleanup();
+/*
+ *	Page fault handling based on vm_map (or entries therein)
+ */
+
+extern kern_return_t	vm_fault();
+extern void		vm_fault_wire();
+extern void		vm_fault_unwire();
+
+extern kern_return_t	vm_fault_copy();	/* Copy pages from
+						 * one object to another
+						 */
+#endif	_VM_VM_FAULT_H_