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
36 extern const int zfs_vm_pagerret_bad;
37 extern const int zfs_vm_pagerret_error;
38 extern const int zfs_vm_pagerret_ok;
39 extern const int zfs_vm_pagerput_sync;
40 extern const int zfs_vm_pagerput_inval;
41
42 void zfs_vmobject_assert_wlocked(vm_object_t object);
43 void zfs_vmobject_wlock(vm_object_t object);
44 void zfs_vmobject_wunlock(vm_object_t object);
45
46 static inline caddr_t
47 zfs_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
53 static inline void
54 zfs_unmap_page(struct sf_buf *sf)
55 {
56 sf_buf_free(sf);
57 }
58
59 #endif /* _KERNEL */
60
61 #endif /* _OPENSOLARIS_SYS_VM_H_ */
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