1/*	$OpenBSD: uvm_swap.h,v 1.20 2023/10/27 19:18:53 mpi Exp $	*/
2/*	$NetBSD: uvm_swap.h,v 1.5 2000/01/11 06:57:51 chs Exp $	*/
3
4/*
5 * Copyright (c) 1997 Matthew R. Green
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
24 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * from: Id: uvm_swap.h,v 1.1.2.6 1997/12/15 05:39:31 mrg Exp
30 */
31
32#ifndef _UVM_UVM_SWAP_H_
33#define _UVM_UVM_SWAP_H_
34
35#define	SWCLUSTPAGES	(MAXBSIZE >> PAGE_SHIFT)
36#define	SWSLOT_BAD	(-1)
37
38#ifdef _KERNEL
39
40int			uvm_swap_get(struct vm_page *, int, int);
41int			uvm_swap_put(int, struct vm_page **, int, int);
42int			uvm_swap_alloc(int *, boolean_t);
43void			uvm_swap_free(int, int);
44void			uvm_swap_markbad(int, int);
45int			uvm_swapisfilled(void);
46int			uvm_swapisfull(void);
47void			uvm_swap_freepages(struct vm_page **, int);
48#ifdef HIBERNATE
49int			uvm_hibswap(dev_t, u_long *, u_long *);
50#endif /* HIBERNATE */
51#ifdef UVM_SWAP_ENCRYPT
52void			uvm_swap_initcrypt_all(void);
53void			uvm_swap_finicrypt_all(void);
54#endif
55
56#endif /* _KERNEL */
57
58#endif /* _UVM_UVM_SWAP_H_ */
59