xref: /freebsd-10.0-release/sys/vm/vnode_pager.h

/*
 * Copyright (c) 1990 University of Utah.
 * Copyright (c) 1991, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department.
 *
 * 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.
 *
 *	@(#)vnode_pager.h	8.1 (Berkeley) 6/11/93
 * $FreeBSD: head/sys/vm/vnode_pager.h 50477 1999-08-28 01:08:13Z peter $
 */

#ifndef	_VNODE_PAGER_
#define	_VNODE_PAGER_	1

#ifdef KERNEL
vm_object_t vnode_pager_alloc __P((void *, vm_ooffset_t, vm_prot_t, vm_ooffset_t));
void vnode_pager_freepage __P((vm_page_t m));
struct vnode *vnode_pager_lock __P((vm_object_t));

/*
 * XXX Generic routines; currently called by badly written FS code; these
 * XXX should go away soon.
 */
int vnode_pager_generic_getpages __P((struct vnode *vp, vm_page_t *m,
					  int count, int reqpage));
int vnode_pager_generic_putpages __P((struct vnode *vp, vm_page_t *m,
					  int count, boolean_t sync,
					  int *rtvals));
#endif

#endif				/* _VNODE_PAGER_ */