xref: /freebsd/sys/vm/vnode_pager.h (revision 6137b5f7b8c183ee8806d79b3f1d8e5e3ddb3df3)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1990 University of Utah.
5  * Copyright (c) 1991, 1993
6  *	The Regents of the University of California.  All rights reserved.
7  *
8  * This code is derived from software contributed to Berkeley by
9  * the Systems Programming Group of the University of Utah Computer
10  * Science Department.
11  *
12  * Redistribution and use in source and binary forms, with or without
13  * modification, are permitted provided that the following conditions
14  * are met:
15  * 1. Redistributions of source code must retain the above copyright
16  *    notice, this list of conditions and the following disclaimer.
17  * 2. Redistributions in binary form must reproduce the above copyright
18  *    notice, this list of conditions and the following disclaimer in the
19  *    documentation and/or other materials provided with the distribution.
20  * 3. Neither the name of the University nor the names of its contributors
21  *    may be used to endorse or promote products derived from this software
22  *    without specific prior written permission.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34  * SUCH DAMAGE.
35  */
36 
37 #ifndef	_VNODE_PAGER_
38 #define	_VNODE_PAGER_	1
39 
40 #ifdef _KERNEL
41 
42 struct vnode;
43 void vnode_pager_clean_sync(struct vnode *vp);
44 void vnode_pager_clean_async(struct vnode *vp);
45 int vnode_pager_generic_getpages(struct vnode *vp, vm_page_t *m,
46     int count, int *rbehind, int *rahead, vop_getpages_iodone_t iodone,
47     void *arg);
48 int vnode_pager_generic_putpages(struct vnode *vp, vm_page_t *m,
49     int count, int flags, int *rtvals);
50 int vnode_pager_local_getpages(struct vop_getpages_args *ap);
51 int vnode_pager_local_getpages_async(struct vop_getpages_async_args *ap);
52 int vnode_pager_putpages_ioflags(int pager_flags);
53 void vnode_pager_undirty_pages(vm_page_t *ma, int *rtvals, int written,
54     off_t eof, int lpos);
55 
56 #endif				/* _KERNEL */
57 #endif				/* _VNODE_PAGER_ */
58