diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/xfs/xfs_extfree_item.h |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'fs/xfs/xfs_extfree_item.h')
-rw-r--r-- | fs/xfs/xfs_extfree_item.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/fs/xfs/xfs_extfree_item.h b/fs/xfs/xfs_extfree_item.h new file mode 100644 index 000000000000..7122d6101d15 --- /dev/null +++ b/fs/xfs/xfs_extfree_item.h | |||
@@ -0,0 +1,123 @@ | |||
1 | /* | ||
2 | * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved. | ||
3 | * | ||
4 | * This program is free software; you can redistribute it and/or modify it | ||
5 | * under the terms of version 2 of the GNU General Public License as | ||
6 | * published by the Free Software Foundation. | ||
7 | * | ||
8 | * This program is distributed in the hope that it would be useful, but | ||
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | ||
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | ||
11 | * | ||
12 | * Further, this software is distributed without any warranty that it is | ||
13 | * free of the rightful claim of any third person regarding infringement | ||
14 | * or the like. Any license provided herein, whether implied or | ||
15 | * otherwise, applies only to this software file. Patent licenses, if | ||
16 | * any, provided herein do not apply to combinations of this program with | ||
17 | * other software, or any other product whatsoever. | ||
18 | * | ||
19 | * You should have received a copy of the GNU General Public License along | ||
20 | * with this program; if not, write the Free Software Foundation, Inc., 59 | ||
21 | * Temple Place - Suite 330, Boston MA 02111-1307, USA. | ||
22 | * | ||
23 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, | ||
24 | * Mountain View, CA 94043, or: | ||
25 | * | ||
26 | * http://www.sgi.com | ||
27 | * | ||
28 | * For further information regarding this notice, see: | ||
29 | * | ||
30 | * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ | ||
31 | */ | ||
32 | #ifndef __XFS_EXTFREE_ITEM_H__ | ||
33 | #define __XFS_EXTFREE_ITEM_H__ | ||
34 | |||
35 | struct xfs_mount; | ||
36 | struct kmem_zone; | ||
37 | |||
38 | typedef struct xfs_extent { | ||
39 | xfs_dfsbno_t ext_start; | ||
40 | xfs_extlen_t ext_len; | ||
41 | } xfs_extent_t; | ||
42 | |||
43 | /* | ||
44 | * This is the structure used to lay out an efi log item in the | ||
45 | * log. The efi_extents field is a variable size array whose | ||
46 | * size is given by efi_nextents. | ||
47 | */ | ||
48 | typedef struct xfs_efi_log_format { | ||
49 | unsigned short efi_type; /* efi log item type */ | ||
50 | unsigned short efi_size; /* size of this item */ | ||
51 | uint efi_nextents; /* # extents to free */ | ||
52 | __uint64_t efi_id; /* efi identifier */ | ||
53 | xfs_extent_t efi_extents[1]; /* array of extents to free */ | ||
54 | } xfs_efi_log_format_t; | ||
55 | |||
56 | /* | ||
57 | * This is the structure used to lay out an efd log item in the | ||
58 | * log. The efd_extents array is a variable size array whose | ||
59 | * size is given by efd_nextents; | ||
60 | */ | ||
61 | typedef struct xfs_efd_log_format { | ||
62 | unsigned short efd_type; /* efd log item type */ | ||
63 | unsigned short efd_size; /* size of this item */ | ||
64 | uint efd_nextents; /* # of extents freed */ | ||
65 | __uint64_t efd_efi_id; /* id of corresponding efi */ | ||
66 | xfs_extent_t efd_extents[1]; /* array of extents freed */ | ||
67 | } xfs_efd_log_format_t; | ||
68 | |||
69 | |||
70 | #ifdef __KERNEL__ | ||
71 | |||
72 | /* | ||
73 | * Max number of extents in fast allocation path. | ||
74 | */ | ||
75 | #define XFS_EFI_MAX_FAST_EXTENTS 16 | ||
76 | |||
77 | /* | ||
78 | * Define EFI flags. | ||
79 | */ | ||
80 | #define XFS_EFI_RECOVERED 0x1 | ||
81 | #define XFS_EFI_COMMITTED 0x2 | ||
82 | #define XFS_EFI_CANCELED 0x4 | ||
83 | |||
84 | /* | ||
85 | * This is the "extent free intention" log item. It is used | ||
86 | * to log the fact that some extents need to be free. It is | ||
87 | * used in conjunction with the "extent free done" log item | ||
88 | * described below. | ||
89 | */ | ||
90 | typedef struct xfs_efi_log_item { | ||
91 | xfs_log_item_t efi_item; | ||
92 | uint efi_flags; /* misc flags */ | ||
93 | uint efi_next_extent; | ||
94 | xfs_efi_log_format_t efi_format; | ||
95 | } xfs_efi_log_item_t; | ||
96 | |||
97 | /* | ||
98 | * This is the "extent free done" log item. It is used to log | ||
99 | * the fact that some extents earlier mentioned in an efi item | ||
100 | * have been freed. | ||
101 | */ | ||
102 | typedef struct xfs_efd_log_item { | ||
103 | xfs_log_item_t efd_item; | ||
104 | xfs_efi_log_item_t *efd_efip; | ||
105 | uint efd_next_extent; | ||
106 | xfs_efd_log_format_t efd_format; | ||
107 | } xfs_efd_log_item_t; | ||
108 | |||
109 | /* | ||
110 | * Max number of extents in fast allocation path. | ||
111 | */ | ||
112 | #define XFS_EFD_MAX_FAST_EXTENTS 16 | ||
113 | |||
114 | extern struct kmem_zone *xfs_efi_zone; | ||
115 | extern struct kmem_zone *xfs_efd_zone; | ||
116 | |||
117 | xfs_efi_log_item_t *xfs_efi_init(struct xfs_mount *, uint); | ||
118 | xfs_efd_log_item_t *xfs_efd_init(struct xfs_mount *, xfs_efi_log_item_t *, | ||
119 | uint); | ||
120 | |||
121 | #endif /* __KERNEL__ */ | ||
122 | |||
123 | #endif /* __XFS_EXTFREE_ITEM_H__ */ | ||