1/*-
2 * Copyright (c) 2013 EMC Corp.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29#ifndef _OPENSOLARIS_SYS_VM_H_
30#define	_OPENSOLARIS_SYS_VM_H_
31
32#ifdef _KERNEL
33
34#include <sys/sf_buf.h>
35
36extern const int zfs_vm_pagerret_bad;
37extern const int zfs_vm_pagerret_error;
38extern const int zfs_vm_pagerret_ok;
39extern const int zfs_vm_pagerput_sync;
40extern const int zfs_vm_pagerput_inval;
41
42void	zfs_vmobject_assert_wlocked(vm_object_t object);
43void	zfs_vmobject_wlock(vm_object_t object);
44void	zfs_vmobject_wunlock(vm_object_t object);
45
46static inline caddr_t
47zfs_map_page(vm_page_t pp, struct sf_buf **sfp)
48{
49	*sfp = sf_buf_alloc(pp, 0);
50	return ((caddr_t)sf_buf_kva(*sfp));
51}
52
53static inline void
54zfs_unmap_page(struct sf_buf *sf)
55{
56	sf_buf_free(sf);
57}
58
59#endif	/* _KERNEL */
60
61#endif	/* _OPENSOLARIS_SYS_VM_H_ */
62