xref: /freebsd-src/sys/cddl/compat/opensolaris/sys/vm.h (revision 95ee2897e98f5d444f26ed2334cc7c439f9c16c6)
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 
27 #ifndef _OPENSOLARIS_SYS_VM_H_
28 #define	_OPENSOLARIS_SYS_VM_H_
29 
30 #ifdef _KERNEL
31 
32 #include <sys/sf_buf.h>
33 
34 extern const int zfs_vm_pagerret_bad;
35 extern const int zfs_vm_pagerret_error;
36 extern const int zfs_vm_pagerret_ok;
37 extern const int zfs_vm_pagerput_sync;
38 extern const int zfs_vm_pagerput_inval;
39 
40 void	zfs_vmobject_assert_wlocked(vm_object_t object);
41 void	zfs_vmobject_wlock(vm_object_t object);
42 void	zfs_vmobject_wunlock(vm_object_t object);
43 
44 static inline caddr_t
zfs_map_page(vm_page_t pp,struct sf_buf ** sfp)45 zfs_map_page(vm_page_t pp, struct sf_buf **sfp)
46 {
47 	*sfp = sf_buf_alloc(pp, 0);
48 	return ((caddr_t)sf_buf_kva(*sfp));
49 }
50 
51 static inline void
zfs_unmap_page(struct sf_buf * sf)52 zfs_unmap_page(struct sf_buf *sf)
53 {
54 	sf_buf_free(sf);
55 }
56 
57 #endif	/* _KERNEL */
58 
59 #endif	/* _OPENSOLARIS_SYS_VM_H_ */
60