projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | ||
| eb60ceac CM |
19 | #ifndef __DISKIO__ |
| 20 | #define __DISKIO__ | |
| 21 | ||
| a512bbf8 | 22 | #define BTRFS_SUPER_INFO_OFFSET (64 * 1024) |
| f2984462 | 23 | #define BTRFS_SUPER_INFO_SIZE 4096 |
| a512bbf8 YZ |
24 | |
| 25 | #define BTRFS_SUPER_MIRROR_MAX 3 | |
| 26 | #define BTRFS_SUPER_MIRROR_SHIFT 12 | |
| 27 | ||
| 28 | static inline u64 btrfs_sb_offset(int mirror) | |
| 29 | { | |
| 30 | u64 start = 16 * 1024; | |
| 31 | if (mirror) | |
| 32 | return start << (BTRFS_SUPER_MIRROR_SHIFT * mirror); | |
| 33 | return BTRFS_SUPER_INFO_OFFSET; | |
| 34 | } | |
| 35 | ||
| 0b86a832 | 36 | struct btrfs_device; |
| 8a4b83cc | 37 | struct btrfs_fs_devices; |
| e20d96d6 | 38 | |
| db94535d | 39 | struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr, |
| ca7a79ad CM |
40 | u32 blocksize, u64 parent_transid); |
| 41 | int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize, | |
| 42 | u64 parent_transid); | |
| ab0fff03 AJ |
43 | int reada_tree_block_flagged(struct btrfs_root *root, u64 bytenr, u32 blocksize, |
| 44 | int mirror_num, struct extent_buffer **eb); | |
| 5f39d397 | 45 | struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root, |
| db94535d | 46 | u64 bytenr, u32 blocksize); |
| e089f05c | 47 | int clean_tree_block(struct btrfs_trans_handle *trans, |
| 5f39d397 | 48 | struct btrfs_root *root, struct extent_buffer *buf); |
| 8a4b83cc | 49 | struct btrfs_root *open_ctree(struct super_block *sb, |
| dfe25020 CM |
50 | struct btrfs_fs_devices *fs_devices, |
| 51 | char *options); | |
| e20d96d6 | 52 | int close_ctree(struct btrfs_root *root); |
| 79154b1b | 53 | int write_ctree_super(struct btrfs_trans_handle *trans, |
| a512bbf8 YZ |
54 | struct btrfs_root *root, int max_mirrors); |
| 55 | struct buffer_head *btrfs_read_dev_super(struct block_device *bdev); | |
| c146afad | 56 | int btrfs_commit_super(struct btrfs_root *root); |
| acce952b | 57 | int btrfs_error_commit_super(struct btrfs_root *root); |
| 5f39d397 | 58 | struct extent_buffer *btrfs_find_tree_block(struct btrfs_root *root, |
| db94535d | 59 | u64 bytenr, u32 blocksize); |
| e02119d5 | 60 | struct btrfs_root *btrfs_read_fs_root_no_radix(struct btrfs_root *tree_root, |
| 5eda7b5e | 61 | struct btrfs_key *location); |
| edbd8d4e CM |
62 | struct btrfs_root *btrfs_read_fs_root_no_name(struct btrfs_fs_info *fs_info, |
| 63 | struct btrfs_key *location); | |
| c146afad | 64 | int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info); |
| d3c2fdcf | 65 | void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr); |
| 16cdcec7 | 66 | void __btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr); |
| 5eda7b5e | 67 | int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root); |
| 5f39d397 | 68 | void btrfs_mark_buffer_dirty(struct extent_buffer *buf); |
| 1259ab75 | 69 | int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid); |
| 5f39d397 | 70 | int btrfs_set_buffer_uptodate(struct extent_buffer *buf); |
| ca7a79ad | 71 | int btrfs_read_buffer(struct extent_buffer *buf, u64 parent_transid); |
| ff79f819 CM |
72 | u32 btrfs_csum_data(struct btrfs_root *root, char *data, u32 seed, size_t len); |
| 73 | void btrfs_csum_final(u32 crc, char *result); | |
| 22c59948 CM |
74 | int btrfs_bio_wq_end_io(struct btrfs_fs_info *info, struct bio *bio, |
| 75 | int metadata); | |
| 44b8bd7e CM |
76 | int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode, |
| 77 | int rw, struct bio *bio, int mirror_num, | |
| eaf25d93 | 78 | unsigned long bio_flags, u64 bio_offset, |
| 4a69a410 CM |
79 | extent_submit_bio_hook_t *submit_bio_start, |
| 80 | extent_submit_bio_hook_t *submit_bio_done); | |
| b64a2851 | 81 | unsigned long btrfs_async_submit_limit(struct btrfs_fs_info *info); |
| e02119d5 CM |
82 | int btrfs_write_tree_block(struct extent_buffer *buf); |
| 83 | int btrfs_wait_tree_block_writeback(struct extent_buffer *buf); | |
| e02119d5 CM |
84 | int btrfs_init_log_root_tree(struct btrfs_trans_handle *trans, |
| 85 | struct btrfs_fs_info *fs_info); | |
| 7237f183 YZ |
86 | int btrfs_add_log_tree(struct btrfs_trans_handle *trans, |
| 87 | struct btrfs_root *root); | |
| 4008c04a CM |
88 | |
| 89 | #ifdef CONFIG_DEBUG_LOCK_ALLOC | |
| 85d4e461 CM |
90 | void btrfs_init_lockdep(void); |
| 91 | void btrfs_set_buffer_lockdep_class(u64 objectid, | |
| 92 | struct extent_buffer *eb, int level); | |
| 4008c04a | 93 | #else |
| 85d4e461 CM |
94 | static inline void btrfs_init_lockdep(void) |
| 95 | { } | |
| 96 | static inline void btrfs_set_buffer_lockdep_class(u64 objectid, | |
| 97 | struct extent_buffer *eb, int level) | |
| 4008c04a CM |
98 | { |
| 99 | } | |
| 100 | #endif | |
| eb60ceac | 101 | #endif |