diff options
author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
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committer | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
commit | fcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch) | |
tree | a57612d1888735a2ec7972891b68c1ac5ec8faea /include/linux/ext3_fs_sb.h | |
parent | 8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff) |
Diffstat (limited to 'include/linux/ext3_fs_sb.h')
-rw-r--r-- | include/linux/ext3_fs_sb.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/include/linux/ext3_fs_sb.h b/include/linux/ext3_fs_sb.h new file mode 100644 index 00000000000..258088ab3c6 --- /dev/null +++ b/include/linux/ext3_fs_sb.h | |||
@@ -0,0 +1,95 @@ | |||
1 | /* | ||
2 | * linux/include/linux/ext3_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_EXT3_FS_SB | ||
17 | #define _LINUX_EXT3_FS_SB | ||
18 | |||
19 | #ifdef __KERNEL__ | ||
20 | #include <linux/timer.h> | ||
21 | #include <linux/wait.h> | ||
22 | #include <linux/blockgroup_lock.h> | ||
23 | #include <linux/percpu_counter.h> | ||
24 | #endif | ||
25 | #include <linux/rbtree.h> | ||
26 | |||
27 | /* | ||
28 | * third extended-fs super-block data in memory | ||
29 | */ | ||
30 | struct ext3_sb_info { | ||
31 | unsigned long s_frag_size; /* Size of a fragment in bytes */ | ||
32 | unsigned long s_frags_per_block;/* Number of fragments per block */ | ||
33 | unsigned long s_inodes_per_block;/* Number of inodes per block */ | ||
34 | unsigned long s_frags_per_group;/* Number of fragments in a group */ | ||
35 | unsigned long s_blocks_per_group;/* Number of blocks in a group */ | ||
36 | unsigned long s_inodes_per_group;/* Number of inodes in a group */ | ||
37 | unsigned long s_itb_per_group; /* Number of inode table blocks per group */ | ||
38 | unsigned long s_gdb_count; /* Number of group descriptor blocks */ | ||
39 | unsigned long s_desc_per_block; /* Number of group descriptors per block */ | ||
40 | unsigned long s_groups_count; /* Number of groups in the fs */ | ||
41 | unsigned long s_overhead_last; /* Last calculated overhead */ | ||
42 | unsigned long s_blocks_last; /* Last seen block count */ | ||
43 | struct buffer_head * s_sbh; /* Buffer containing the super block */ | ||
44 | struct ext3_super_block * s_es; /* Pointer to the super block in the buffer */ | ||
45 | struct buffer_head ** s_group_desc; | ||
46 | unsigned long s_mount_opt; | ||
47 | ext3_fsblk_t s_sb_block; | ||
48 | uid_t s_resuid; | ||
49 | gid_t s_resgid; | ||
50 | unsigned short s_mount_state; | ||
51 | unsigned short s_pad; | ||
52 | int s_addr_per_block_bits; | ||
53 | int s_desc_per_block_bits; | ||
54 | int s_inode_size; | ||
55 | int s_first_ino; | ||
56 | spinlock_t s_next_gen_lock; | ||
57 | u32 s_next_generation; | ||
58 | u32 s_hash_seed[4]; | ||
59 | int s_def_hash_version; | ||
60 | int s_hash_unsigned; /* 3 if hash should be signed, 0 if not */ | ||
61 | struct percpu_counter s_freeblocks_counter; | ||
62 | struct percpu_counter s_freeinodes_counter; | ||
63 | struct percpu_counter s_dirs_counter; | ||
64 | struct blockgroup_lock *s_blockgroup_lock; | ||
65 | |||
66 | /* root of the per fs reservation window tree */ | ||
67 | spinlock_t s_rsv_window_lock; | ||
68 | struct rb_root s_rsv_window_root; | ||
69 | struct ext3_reserve_window_node s_rsv_window_head; | ||
70 | |||
71 | /* Journaling */ | ||
72 | struct inode * s_journal_inode; | ||
73 | struct journal_s * s_journal; | ||
74 | struct list_head s_orphan; | ||
75 | struct mutex s_orphan_lock; | ||
76 | struct mutex s_resize_lock; | ||
77 | unsigned long s_commit_interval; | ||
78 | struct block_device *journal_bdev; | ||
79 | #ifdef CONFIG_JBD_DEBUG | ||
80 | struct timer_list turn_ro_timer; /* For turning read-only (crash simulation) */ | ||
81 | wait_queue_head_t ro_wait_queue; /* For people waiting for the fs to go read-only */ | ||
82 | #endif | ||
83 | #ifdef CONFIG_QUOTA | ||
84 | char *s_qf_names[MAXQUOTAS]; /* Names of quota files with journalled quota */ | ||
85 | int s_jquota_fmt; /* Format of quota to use */ | ||
86 | #endif | ||
87 | }; | ||
88 | |||
89 | static inline spinlock_t * | ||
90 | sb_bgl_lock(struct ext3_sb_info *sbi, unsigned int block_group) | ||
91 | { | ||
92 | return bgl_lock_ptr(sbi->s_blockgroup_lock, block_group); | ||
93 | } | ||
94 | |||
95 | #endif /* _LINUX_EXT3_FS_SB */ | ||