2 * Copyright (C) 2007 Oracle. All rights reserved.
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.
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.
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.
22 #define BTRFS_SUPER_INFO_OFFSET (16 * 1024)
23 #define BTRFS_SUPER_INFO_SIZE 4096
27 struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
29 int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize);
30 struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root,
31 u64 bytenr, u32 blocksize);
32 int clean_tree_block(struct btrfs_trans_handle *trans,
33 struct btrfs_root *root, struct extent_buffer *buf);
34 struct btrfs_root *open_ctree(const char *filename, u64 sb_bytenr, int writes);
35 struct btrfs_root *open_ctree_fd(int fp, const char *path, u64 sb_bytenr,
37 int close_ctree(struct btrfs_root *root);
38 int write_ctree_super(struct btrfs_trans_handle *trans,
39 struct btrfs_root *root);
40 int btrfs_map_bh_to_logical(struct btrfs_root *root, struct extent_buffer *bh,
42 struct extent_buffer *btrfs_find_tree_block(struct btrfs_root *root,
43 u64 bytenr, u32 blocksize);
44 struct btrfs_root *btrfs_read_fs_root(struct btrfs_fs_info *fs_info,
45 struct btrfs_key *location);
46 int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root);
47 void btrfs_mark_buffer_dirty(struct extent_buffer *buf);
48 int btrfs_buffer_uptodate(struct extent_buffer *buf);
49 int btrfs_set_buffer_uptodate(struct extent_buffer *buf);
50 int wait_on_tree_block_writeback(struct btrfs_root *root,
51 struct extent_buffer *buf);
52 u32 btrfs_csum_data(struct btrfs_root *root, char *data, u32 seed, size_t len);
53 void btrfs_csum_final(u32 crc, char *result);
55 int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
56 struct btrfs_root *root);
57 int btrfs_open_device(struct btrfs_device *dev);
58 int csum_tree_block(struct btrfs_root *root, struct extent_buffer *buf,