1/* $NetBSD: uvm_loan.h,v 1.17 2011/02/02 15:13:34 chuck Exp $ */
2
3/*
4 * Copyright (c) 1997 Charles D. Cranor and Washington University.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * from: Id: uvm_loan.h,v 1.1.4.1 1997/12/08 16:07:14 chuck Exp
28 */
29
30#ifndef _UVM_UVM_LOAN_H_
31#define _UVM_UVM_LOAN_H_
32
33#ifdef _KERNEL
34
35/*
36 * flags for uvm_loan()
37 */
38
39#define UVM_LOAN_TOANON 0x1 /* loan to anon */
40#define UVM_LOAN_TOPAGE 0x2 /* loan to page */
41
42/*
43 * loan prototypes
44 */
45
46void uvm_loan_init(void);
47int uvm_loan(struct vm_map *, vaddr_t, vsize_t, void *, int);
48void uvm_unloan(void *, int, int);
49int uvm_loanuobjpages(struct uvm_object *, voff_t, int,
50 struct vm_page **);
51struct vm_page *uvm_loanbreak(struct vm_page *);
52int uvm_loanbreak_anon(struct vm_anon *, struct uvm_object *);
53
54#endif /* _KERNEL */
55
56#endif /* _UVM_UVM_LOAN_H_ */
57