the_nilfs.h (6b0f3393e38584ec22bab62fe01df58ae5a73ee7) the_nilfs.h (572d8b3945a31bee7c40d21556803e4807fd9141)
1/*
2 * the_nilfs.h - the_nilfs shared structure.
3 *
4 * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or

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42 THE_NILFS_SB_DIRTY, /* super block is dirty */
43};
44
45/**
46 * struct the_nilfs - struct to supervise multiple nilfs mount points
47 * @ns_flags: flags
48 * @ns_bdev: block device
49 * @ns_sem: semaphore for shared states
1/*
2 * the_nilfs.h - the_nilfs shared structure.
3 *
4 * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or

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42 THE_NILFS_SB_DIRTY, /* super block is dirty */
43};
44
45/**
46 * struct the_nilfs - struct to supervise multiple nilfs mount points
47 * @ns_flags: flags
48 * @ns_bdev: block device
49 * @ns_sem: semaphore for shared states
50 * @ns_snapshot_mount_mutex: mutex to protect snapshot mounts
50 * @ns_sbh: buffer heads of on-disk super blocks
51 * @ns_sbp: pointers to super block data
52 * @ns_sbwtime: previous write time of super block
53 * @ns_sbwcount: write count of super block
54 * @ns_sbsize: size of valid data in super block
55 * @ns_mount_state: file system state
56 * @ns_seg_seq: segment sequence counter
57 * @ns_segnum: index number of the latest full segment.

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95 * @ns_first_ino: first not-special inode number
96 * @ns_crc_seed: seed value of CRC32 calculation
97 */
98struct the_nilfs {
99 unsigned long ns_flags;
100
101 struct block_device *ns_bdev;
102 struct rw_semaphore ns_sem;
51 * @ns_sbh: buffer heads of on-disk super blocks
52 * @ns_sbp: pointers to super block data
53 * @ns_sbwtime: previous write time of super block
54 * @ns_sbwcount: write count of super block
55 * @ns_sbsize: size of valid data in super block
56 * @ns_mount_state: file system state
57 * @ns_seg_seq: segment sequence counter
58 * @ns_segnum: index number of the latest full segment.

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96 * @ns_first_ino: first not-special inode number
97 * @ns_crc_seed: seed value of CRC32 calculation
98 */
99struct the_nilfs {
100 unsigned long ns_flags;
101
102 struct block_device *ns_bdev;
103 struct rw_semaphore ns_sem;
104 struct mutex ns_snapshot_mount_mutex;
103
104 /*
105 * used for
106 * - loading the latest checkpoint exclusively.
107 * - allocating a new full segment.
108 * - protecting s_dirt in the super_block struct
109 * (see nilfs_write_super) and the following fields.
110 */

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106 /*
107 * used for
108 * - loading the latest checkpoint exclusively.
109 * - allocating a new full segment.
110 * - protecting s_dirt in the super_block struct
111 * (see nilfs_write_super) and the following fields.
112 */

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