blob: f5214dc33c60e166fc8e740a6584ae8615e09301 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
* http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2014, 2015, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*
* FIEMAP data structures and flags. This header file will be used until
* fiemap.h is available in the upstream kernel.
*
* Author: Kalpak Shah <kalpak.shah@sun.com>
* Author: Andreas Dilger <adilger@sun.com>
*/
#ifndef _LUSTRE_FIEMAP_H
#define _LUSTRE_FIEMAP_H
#include <stddef.h>
#include <linux/fiemap.h>
/* XXX: We use fiemap_extent::fe_reserved[0] */
#define fe_device fe_reserved[0]
static inline size_t fiemap_count_to_size(size_t extent_count)
{
return sizeof(struct fiemap) + extent_count *
sizeof(struct fiemap_extent);
}
static inline unsigned fiemap_size_to_count(size_t array_size)
{
return (array_size - sizeof(struct fiemap)) /
sizeof(struct fiemap_extent);
}
#define FIEMAP_FLAG_DEVICE_ORDER 0x40000000 /* return device ordered mapping */
#ifdef FIEMAP_FLAGS_COMPAT
#undef FIEMAP_FLAGS_COMPAT
#endif
/* Lustre specific flags - use a high bit, don't conflict with upstream flag */
#define FIEMAP_EXTENT_NO_DIRECT 0x40000000 /* Data mapping undefined */
#define FIEMAP_EXTENT_NET 0x80000000 /* Data stored remotely.
* Sets NO_DIRECT flag
*/
#endif /* _LUSTRE_FIEMAP_H */
|
