1/* $OpenBSD: uvm_swap.h,v 1.22 2026/04/11 01:36:23 deraadt 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_dropcluster(struct vm_page **, int, int);
41int uvm_swap_get(struct vm_page *, int, int);
42int uvm_swap_put(int, struct vm_page **, int, int);
43int uvm_swap_alloc(int *, boolean_t);
44void uvm_swap_free(int, int);
45void uvm_swap_markbad(int, int);
46int uvm_swapisfilled(void);
47int uvm_swapisfull(void);
48void uvm_swap_freepages(struct vm_page **, int);
49#ifdef HIBERNATE
50int uvm_hibswap(dev_t, u_long *, u_long *);
51#endif /* HIBERNATE */
52#ifdef UVM_SWAP_ENCRYPT
53void uvm_swap_initcrypt_all(void);
54void uvm_swap_finicrypt_all(void);
55#endif
56
57extern volatile int seb_free;
58
59#endif /* _KERNEL */
60
61#endif /* _UVM_UVM_SWAP_H_ */