new file

SCCS-vsn: sys/vm/vm.h 7.1

diff --git a/usr/src/sys/vm/vm.h b/usr/src/sys/vm/vm.h
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--- /dev/null
+++ b/usr/src/sys/vm/vm.h
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+/*
+ * Copyright (c) 1991 Regents of the University of California.
+ * All rights reserved.
+ *
+ * %sccs.include.redist.c%
+ *
+ *     @(#)vm.h        7.1 (Berkeley) %G%
+ */
+
+#ifndef VM_H
+#define VM_H
+#include <vm/vm_param.h>
+#include <vm/lock.h>
+#include <vm/queue.h>
+#include <vm/vm_prot.h>
+#include <vm/vm_inherit.h>
+#include <vm/vm_map.h>
+#include <vm/vm_object.h>
+#include <vm/vm_statistics.h>
+#include <vm/pmap.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 */
+};
+
+struct vmspace *vmspace_alloc __P((vm_offset_t min, vm_offset_t max,
+                       int pageable));
+struct vmspace *vmspace_fork __P((struct vmspace *));
+void   vmspace_free __P((struct vmspace *));
+#endif /* VM_H */