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. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  *
  38  *      @(#)vnode_pager.h       8.1 (Berkeley) 6/11/93
  39  * $FreeBSD: src/sys/vm/vnode_pager.h,v 1.14 1999/12/29 04:55:12 peter Exp $
  40  * $DragonFly: src/sys/vm/vnode_pager.h,v 1.6 2006/05/20 02:42:15 dillon Exp $
  41  */
  42
  43 #ifndef _VM_VNODE_PAGER_H_
  44 #define _VM_VNODE_PAGER_H_
  45
  46 #ifdef _KERNEL
  47
  48 #ifndef _SYS_TYPES_H_
  49 #include <sys/types.h>
  50 #endif
  51 #ifndef _VM_VM_OBJECT_H_
  52 #include <vm/vm_object.h>
  53 #endif
  54
  55 vm_object_t vnode_pager_alloc (void *, off_t, vm_prot_t, off_t);
  56 void vnode_pager_freepage (vm_page_t);
  57 struct vnode *vnode_pager_lock (vm_object_t);
  58
  59 /*
  60  * XXX Generic routines; currently called by badly written FS code; these
  61  * XXX should go away soon.
  62  */
  63 int vnode_pager_generic_getpages (struct vnode *, vm_page_t *, int, int);
  64 int vnode_pager_generic_putpages (struct vnode *, vm_page_t *, int,
  65                                         boolean_t, int *);
  66 #endif
  67
  68 #endif                          /* _VM_VNODE_PAGER_H_ */