sys/vm/vnode_pager.h

   1 /*
   2  * Copyright (c) 1990 University of Utah.
   3  * Copyright (c) 1991, 1993
   4  *      The Regents of the University of California.  All rights reserved.
   5  *
   6  * This code is derived from software contributed to Berkeley by
   7  * the Systems Programming Group of the University of Utah Computer
   8  * Science Department.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      @(#)vnode_pager.h       8.1 (Berkeley) 6/11/93
  35  * $FreeBSD: src/sys/vm/vnode_pager.h,v 1.14 1999/12/29 04:55:12 peter Exp $
  36  */
  37
  38 #ifndef _VM_VNODE_PAGER_H_
  39 #define _VM_VNODE_PAGER_H_
  40
  41 #ifdef _KERNEL
  42
  43 #ifndef _SYS_TYPES_H_
  44 #include <sys/types.h>
  45 #endif
  46 #ifndef _VM_VM_OBJECT_H_
  47 #include <vm/vm_object.h>
  48 #endif
  49
  50 void vnode_pager_freepage (vm_page_t);
  51 struct vnode *vnode_pager_lock (vm_object_t);
  52
  53 /*
  54  * XXX Generic routines; currently called by badly written FS code; these
  55  * XXX should go away soon.
  56  */
  57 int vnode_pager_generic_getpages (struct vnode *, vm_page_t *, int, int, int);
  58 int vnode_pager_generic_putpages (struct vnode *, vm_page_t *, int, int, int *);
  59 #endif
  60
  61 #endif                          /* _VM_VNODE_PAGER_H_ */