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6cbd5570 CM |
1 | /* |
2 | * Copyright (C) 2007 Oracle. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public | |
6 | * License v2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public | |
14 | * License along with this program; if not, write to the | |
15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
16 | * Boston, MA 021110-1307, USA. | |
17 | */ | |
18 | ||
2c90e5d6 CM |
19 | #ifndef __BTRFS_I__ |
20 | #define __BTRFS_I__ | |
21 | ||
a52d9a80 | 22 | #include "extent_map.h" |
d1310b2e | 23 | #include "extent_io.h" |
e6dcd2dc | 24 | #include "ordered-data.h" |
a52d9a80 | 25 | |
f1ace244 | 26 | /* in memory btrfs inode */ |
2c90e5d6 | 27 | struct btrfs_inode { |
d352ac68 | 28 | /* which subvolume this inode belongs to */ |
d6e4a428 | 29 | struct btrfs_root *root; |
d352ac68 | 30 | |
d352ac68 CM |
31 | /* key used to find this inode on disk. This is used by the code |
32 | * to read in roots of subvolumes | |
33 | */ | |
d6e4a428 | 34 | struct btrfs_key location; |
d352ac68 CM |
35 | |
36 | /* the extent_tree has caches of all the extent mappings to disk */ | |
a52d9a80 | 37 | struct extent_map_tree extent_tree; |
d352ac68 CM |
38 | |
39 | /* the io_tree does range state (DIRTY, LOCKED etc) */ | |
d1310b2e | 40 | struct extent_io_tree io_tree; |
d352ac68 CM |
41 | |
42 | /* special utility tree used to record which mirrors have already been | |
43 | * tried when checksums fail for a given block | |
44 | */ | |
7e38326f | 45 | struct extent_io_tree io_failure_tree; |
d352ac68 | 46 | |
d352ac68 | 47 | /* held while inesrting or deleting extents from files */ |
ee6e6504 | 48 | struct mutex extent_mutex; |
d352ac68 CM |
49 | |
50 | /* held while logging the inode in tree-log.c */ | |
e02119d5 | 51 | struct mutex log_mutex; |
d352ac68 CM |
52 | |
53 | /* used to order data wrt metadata */ | |
e6dcd2dc | 54 | struct btrfs_ordered_inode_tree ordered_tree; |
15ee9bc7 | 55 | |
d352ac68 | 56 | /* standard acl pointers */ |
33268eaf JB |
57 | struct posix_acl *i_acl; |
58 | struct posix_acl *i_default_acl; | |
59 | ||
7b128766 JB |
60 | /* for keeping track of orphaned inodes */ |
61 | struct list_head i_orphan; | |
62 | ||
d352ac68 CM |
63 | /* list of all the delalloc inodes in the FS. There are times we need |
64 | * to write all the delalloc pages to disk, and this list is used | |
65 | * to walk them all. | |
66 | */ | |
ea8c2819 CM |
67 | struct list_head delalloc_inodes; |
68 | ||
d352ac68 CM |
69 | /* full 64 bit generation number, struct vfs_inode doesn't have a big |
70 | * enough field for this. | |
71 | */ | |
e02119d5 CM |
72 | u64 generation; |
73 | ||
c3027eb5 CM |
74 | /* sequence number for NFS changes */ |
75 | u64 sequence; | |
76 | ||
15ee9bc7 JB |
77 | /* |
78 | * transid of the trans_handle that last modified this inode | |
79 | */ | |
80 | u64 last_trans; | |
e02119d5 CM |
81 | /* |
82 | * transid that last logged this inode | |
83 | */ | |
84 | u64 logged_trans; | |
49eb7e46 | 85 | |
d352ac68 CM |
86 | /* |
87 | * trans that last made a change that should be fully fsync'd. This | |
88 | * gets reset to zero each time the inode is logged | |
89 | */ | |
49eb7e46 | 90 | u64 log_dirty_trans; |
d352ac68 CM |
91 | |
92 | /* total number of bytes pending delalloc, used by stat to calc the | |
93 | * real block usage of the file | |
94 | */ | |
9069218d | 95 | u64 delalloc_bytes; |
d352ac68 CM |
96 | |
97 | /* | |
98 | * the size of the file stored in the metadata on disk. data=ordered | |
99 | * means the in-memory i_size might be larger than the size on disk | |
100 | * because not all the blocks are written yet. | |
101 | */ | |
dbe674a9 | 102 | u64 disk_i_size; |
d352ac68 CM |
103 | |
104 | /* flags field from the on disk inode */ | |
b98b6767 | 105 | u32 flags; |
aec7477b JB |
106 | |
107 | /* | |
108 | * if this is a directory then index_cnt is the counter for the index | |
109 | * number for new files that are created | |
110 | */ | |
111 | u64 index_cnt; | |
d352ac68 | 112 | |
d2fb3437 YZ |
113 | /* the start of block group preferred for allocations. */ |
114 | u64 block_group; | |
115 | ||
d352ac68 | 116 | struct inode vfs_inode; |
2c90e5d6 | 117 | }; |
dbe674a9 | 118 | |
2c90e5d6 CM |
119 | static inline struct btrfs_inode *BTRFS_I(struct inode *inode) |
120 | { | |
121 | return container_of(inode, struct btrfs_inode, vfs_inode); | |
122 | } | |
123 | ||
dbe674a9 CM |
124 | static inline void btrfs_i_size_write(struct inode *inode, u64 size) |
125 | { | |
126 | inode->i_size = size; | |
127 | BTRFS_I(inode)->disk_i_size = size; | |
128 | } | |
129 | ||
130 | ||
2c90e5d6 | 131 | #endif |