c8c65614dd1c2d4c6eefe4d36a6ab2b4985874ab
[linux-2.6.git] / fs / squashfs / squashfs_fs_sb.h
1 #ifndef SQUASHFS_FS_SB
2 #define SQUASHFS_FS_SB
3 /*
4  * Squashfs
5  *
6  * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008
7  * Phillip Lougher <phillip@lougher.demon.co.uk>
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License
11  * as published by the Free Software Foundation; either version 2,
12  * or (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
22  *
23  * squashfs_fs_sb.h
24  */
25
26 #include "squashfs_fs.h"
27
28 struct squashfs_cache {
29         char                    *name;
30         int                     entries;
31         int                     next_blk;
32         int                     num_waiters;
33         int                     unused;
34         int                     block_size;
35         int                     pages;
36         spinlock_t              lock;
37         wait_queue_head_t       wait_queue;
38         struct squashfs_cache_entry *entry;
39 };
40
41 struct squashfs_cache_entry {
42         u64                     block;
43         int                     length;
44         int                     refcount;
45         u64                     next_index;
46         int                     pending;
47         int                     error;
48         int                     num_waiters;
49         wait_queue_head_t       wait_queue;
50         struct squashfs_cache   *cache;
51         void                    **data;
52 };
53
54 struct squashfs_sb_info {
55         int                     devblksize;
56         int                     devblksize_log2;
57         struct squashfs_cache   *block_cache;
58         struct squashfs_cache   *fragment_cache;
59         struct squashfs_cache   *read_page;
60         int                     next_meta_index;
61         __le64                  *id_table;
62         __le64                  *fragment_index;
63         unsigned int            *fragment_index_2;
64         struct mutex            read_data_mutex;
65         struct mutex            meta_index_mutex;
66         struct meta_index       *meta_index;
67         z_stream                stream;
68         __le64                  *inode_lookup_table;
69         u64                     inode_table;
70         u64                     directory_table;
71         unsigned int            block_size;
72         unsigned short          block_log;
73         long long               bytes_used;
74         unsigned int            inodes;
75 };
76 #endif