Chris Mason | 6cbd557 | 2007-06-12 09:07:21 -0400 | [diff] [blame] | 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 | |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 19 | #ifndef __DISKIO__ |
| 20 | #define __DISKIO__ |
| 21 | |
Yan Zheng | a512bbf | 2008-12-08 16:46:26 -0500 | [diff] [blame] | 22 | #define BTRFS_SUPER_INFO_OFFSET (64 * 1024) |
Chris Mason | f298446 | 2008-04-10 16:19:33 -0400 | [diff] [blame] | 23 | #define BTRFS_SUPER_INFO_SIZE 4096 |
Yan Zheng | a512bbf | 2008-12-08 16:46:26 -0500 | [diff] [blame] | 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 | |
Chris Mason | 0b86a83 | 2008-03-24 15:01:56 -0400 | [diff] [blame] | 36 | struct btrfs_device; |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 37 | struct btrfs_fs_devices; |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 38 | |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 39 | struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr, |
Chris Mason | ca7a79a | 2008-05-12 12:59:19 -0400 | [diff] [blame] | 40 | u32 blocksize, u64 parent_transid); |
| 41 | int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize, |
| 42 | u64 parent_transid); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 43 | struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root, |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 44 | u64 bytenr, u32 blocksize); |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 45 | int clean_tree_block(struct btrfs_trans_handle *trans, |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 46 | struct btrfs_root *root, struct extent_buffer *buf); |
Chris Mason | 8a4b83c | 2008-03-24 15:02:07 -0400 | [diff] [blame] | 47 | struct btrfs_root *open_ctree(struct super_block *sb, |
Chris Mason | dfe2502 | 2008-05-13 13:46:40 -0400 | [diff] [blame] | 48 | struct btrfs_fs_devices *fs_devices, |
| 49 | char *options); |
Chris Mason | e20d96d | 2007-03-22 12:13:20 -0400 | [diff] [blame] | 50 | int close_ctree(struct btrfs_root *root); |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 51 | int write_ctree_super(struct btrfs_trans_handle *trans, |
Yan Zheng | a512bbf | 2008-12-08 16:46:26 -0500 | [diff] [blame] | 52 | struct btrfs_root *root, int max_mirrors); |
| 53 | struct buffer_head *btrfs_read_dev_super(struct block_device *bdev); |
Yan Zheng | c146afa | 2008-11-12 14:34:12 -0500 | [diff] [blame] | 54 | int btrfs_commit_super(struct btrfs_root *root); |
liubo | acce952 | 2011-01-06 19:30:25 +0800 | [diff] [blame] | 55 | int btrfs_error_commit_super(struct btrfs_root *root); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 56 | struct extent_buffer *btrfs_find_tree_block(struct btrfs_root *root, |
Chris Mason | db94535 | 2007-10-15 16:15:53 -0400 | [diff] [blame] | 57 | u64 bytenr, u32 blocksize); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 58 | struct btrfs_root *btrfs_read_fs_root_no_radix(struct btrfs_root *tree_root, |
Chris Mason | 5eda7b5 | 2007-06-22 14:16:25 -0400 | [diff] [blame] | 59 | struct btrfs_key *location); |
Chris Mason | edbd8d4 | 2007-12-21 16:27:24 -0500 | [diff] [blame] | 60 | struct btrfs_root *btrfs_read_fs_root_no_name(struct btrfs_fs_info *fs_info, |
| 61 | struct btrfs_key *location); |
Yan Zheng | c146afa | 2008-11-12 14:34:12 -0500 | [diff] [blame] | 62 | int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info); |
Chris Mason | d3c2fdcf | 2007-09-17 10:58:06 -0400 | [diff] [blame] | 63 | void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr); |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 64 | void __btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr); |
Chris Mason | 5eda7b5 | 2007-06-22 14:16:25 -0400 | [diff] [blame] | 65 | int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 66 | void btrfs_mark_buffer_dirty(struct extent_buffer *buf); |
Chris Mason | 1259ab7 | 2008-05-12 13:39:03 -0400 | [diff] [blame] | 67 | int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 68 | int btrfs_set_buffer_uptodate(struct extent_buffer *buf); |
Chris Mason | ca7a79a | 2008-05-12 12:59:19 -0400 | [diff] [blame] | 69 | int btrfs_read_buffer(struct extent_buffer *buf, u64 parent_transid); |
Chris Mason | ff79f81 | 2007-10-15 16:22:25 -0400 | [diff] [blame] | 70 | u32 btrfs_csum_data(struct btrfs_root *root, char *data, u32 seed, size_t len); |
| 71 | void btrfs_csum_final(u32 crc, char *result); |
Chris Mason | 22c5994 | 2008-04-09 16:28:12 -0400 | [diff] [blame] | 72 | int btrfs_bio_wq_end_io(struct btrfs_fs_info *info, struct bio *bio, |
| 73 | int metadata); |
Chris Mason | 44b8bd7 | 2008-04-16 11:14:51 -0400 | [diff] [blame] | 74 | int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode, |
| 75 | int rw, struct bio *bio, int mirror_num, |
Chris Mason | eaf25d9 | 2010-05-25 09:48:28 -0400 | [diff] [blame] | 76 | unsigned long bio_flags, u64 bio_offset, |
Chris Mason | 4a69a41 | 2008-11-06 22:03:00 -0500 | [diff] [blame] | 77 | extent_submit_bio_hook_t *submit_bio_start, |
| 78 | extent_submit_bio_hook_t *submit_bio_done); |
Chris Mason | b64a285 | 2008-08-20 13:39:41 -0400 | [diff] [blame] | 79 | unsigned long btrfs_async_submit_limit(struct btrfs_fs_info *info); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 80 | int btrfs_write_tree_block(struct extent_buffer *buf); |
| 81 | int btrfs_wait_tree_block_writeback(struct extent_buffer *buf); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 82 | int btrfs_init_log_root_tree(struct btrfs_trans_handle *trans, |
| 83 | struct btrfs_fs_info *fs_info); |
Yan Zheng | 7237f18 | 2009-01-21 12:54:03 -0500 | [diff] [blame] | 84 | int btrfs_add_log_tree(struct btrfs_trans_handle *trans, |
| 85 | struct btrfs_root *root); |
Chris Mason | 4bef084 | 2008-09-08 11:18:08 -0400 | [diff] [blame] | 86 | int btree_lock_page_hook(struct page *page); |
Chris Mason | 4008c04 | 2009-02-12 14:09:45 -0500 | [diff] [blame] | 87 | |
| 88 | |
| 89 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
Chris Mason | 85d4e46 | 2011-07-26 16:11:19 -0400 | [diff] [blame^] | 90 | void btrfs_init_lockdep(void); |
| 91 | void btrfs_set_buffer_lockdep_class(u64 objectid, |
| 92 | struct extent_buffer *eb, int level); |
Chris Mason | 4008c04 | 2009-02-12 14:09:45 -0500 | [diff] [blame] | 93 | #else |
Chris Mason | 85d4e46 | 2011-07-26 16:11:19 -0400 | [diff] [blame^] | 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) |
Chris Mason | 4008c04 | 2009-02-12 14:09:45 -0500 | [diff] [blame] | 98 | { |
| 99 | } |
| 100 | #endif |
Chris Mason | eb60cea | 2007-02-02 09:18:22 -0500 | [diff] [blame] | 101 | #endif |