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diff --git a/sys/vm/vm.h b/sys/vm/vm.h
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+/* $NetBSD: vm.h,v 1.13 1994/06/29 06:47:52 cgd Exp $ */
+
+/*
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)vm.h 8.2 (Berkeley) 12/13/93
+ */
+
+#ifndef VM_H
+#define VM_H
+
+typedef int vm_inherit_t; /* XXX: inheritance codes */
+
+union vm_map_object;
+typedef union vm_map_object vm_map_object_t;
+
+struct vm_map_entry;
+typedef struct vm_map_entry *vm_map_entry_t;
+
+struct vm_map;
+typedef struct vm_map *vm_map_t;
+
+struct vm_object;
+typedef struct vm_object *vm_object_t;
+
+struct vm_page;
+typedef struct vm_page *vm_page_t;
+
+struct pager_struct;
+typedef struct pager_struct *vm_pager_t;
+
+#include <sys/vmmeter.h>
+#include <sys/queue.h>
+#include <vm/vm_param.h>
+#include <vm/lock.h>
+#include <vm/vm_prot.h>
+#include <vm/vm_inherit.h>
+#include <vm/vm_map.h>
+#include <vm/vm_object.h>
+#include <vm/pmap.h>
+#include <vm/vm_extern.h>
+
+/*
+ * Shareable process virtual address space.
+ * May eventually be merged with vm_map.
+ * Several fields are temporary (text, data stuff).
+ */
+struct vmspace {
+ struct vm_map vm_map; /* VM address map */
+ struct pmap vm_pmap; /* private physical map */
+ int vm_refcnt; /* number of references */
+ caddr_t vm_shm; /* SYS5 shared memory private data XXX */
+/* we copy from vm_startcopy to the end of the structure on fork */
+#define vm_startcopy vm_rssize
+ segsz_t vm_rssize; /* current resident set size in pages */
+ segsz_t vm_swrss; /* resident set size before last swap */
+ segsz_t vm_tsize; /* text size (pages) XXX */
+ segsz_t vm_dsize; /* data size (pages) XXX */
+ segsz_t vm_ssize; /* stack size (pages) */
+ caddr_t vm_taddr; /* user virtual address of text XXX */
+ caddr_t vm_daddr; /* user virtual address of data XXX */
+ caddr_t vm_maxsaddr; /* user VA at max stack growth */
+};
+#endif /* VM_H */