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1da177e4 LT |
1 | /* |
2 | * linux/include/linux/ext2_fs_sb.h | |
3 | * | |
4 | * Copyright (C) 1992, 1993, 1994, 1995 | |
5 | * Remy Card (card@masi.ibp.fr) | |
6 | * Laboratoire MASI - Institut Blaise Pascal | |
7 | * Universite Pierre et Marie Curie (Paris VI) | |
8 | * | |
9 | * from | |
10 | * | |
11 | * linux/include/linux/minix_fs_sb.h | |
12 | * | |
13 | * Copyright (C) 1991, 1992 Linus Torvalds | |
14 | */ | |
15 | ||
16 | #ifndef _LINUX_EXT2_FS_SB | |
17 | #define _LINUX_EXT2_FS_SB | |
18 | ||
19 | #include <linux/blockgroup_lock.h> | |
20 | #include <linux/percpu_counter.h> | |
21 | ||
22 | /* | |
23 | * second extended-fs super-block data in memory | |
24 | */ | |
25 | struct ext2_sb_info { | |
26 | unsigned long s_frag_size; /* Size of a fragment in bytes */ | |
27 | unsigned long s_frags_per_block;/* Number of fragments per block */ | |
28 | unsigned long s_inodes_per_block;/* Number of inodes per block */ | |
29 | unsigned long s_frags_per_group;/* Number of fragments in a group */ | |
30 | unsigned long s_blocks_per_group;/* Number of blocks in a group */ | |
31 | unsigned long s_inodes_per_group;/* Number of inodes in a group */ | |
32 | unsigned long s_itb_per_group; /* Number of inode table blocks per group */ | |
33 | unsigned long s_gdb_count; /* Number of group descriptor blocks */ | |
34 | unsigned long s_desc_per_block; /* Number of group descriptors per block */ | |
35 | unsigned long s_groups_count; /* Number of groups in the fs */ | |
2235219b BP |
36 | unsigned long s_overhead_last; /* Last calculated overhead */ |
37 | unsigned long s_blocks_last; /* Last seen block count */ | |
1da177e4 LT |
38 | struct buffer_head * s_sbh; /* Buffer containing the super block */ |
39 | struct ext2_super_block * s_es; /* Pointer to the super block in the buffer */ | |
40 | struct buffer_head ** s_group_desc; | |
41 | unsigned long s_mount_opt; | |
93d44cb2 | 42 | unsigned long s_sb_block; |
1da177e4 LT |
43 | uid_t s_resuid; |
44 | gid_t s_resgid; | |
45 | unsigned short s_mount_state; | |
46 | unsigned short s_pad; | |
47 | int s_addr_per_block_bits; | |
48 | int s_desc_per_block_bits; | |
49 | int s_inode_size; | |
50 | int s_first_ino; | |
51 | spinlock_t s_next_gen_lock; | |
52 | u32 s_next_generation; | |
53 | unsigned long s_dir_count; | |
54 | u8 *s_debts; | |
55 | struct percpu_counter s_freeblocks_counter; | |
56 | struct percpu_counter s_freeinodes_counter; | |
57 | struct percpu_counter s_dirs_counter; | |
58 | struct blockgroup_lock s_blockgroup_lock; | |
59 | }; | |
60 | ||
61 | #endif /* _LINUX_EXT2_FS_SB */ |