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)
24 struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
26 int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize);
27 struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root,
28 u64 bytenr, u32 blocksize);
29 int clean_tree_block(struct btrfs_trans_handle *trans,
30 struct btrfs_root *root, struct extent_buffer *buf);
31 struct btrfs_root *open_ctree(struct super_block *sb);
32 int close_ctree(struct btrfs_root *root);
33 int write_ctree_super(struct btrfs_trans_handle *trans,
34 struct btrfs_root *root);
35 struct extent_buffer *btrfs_find_tree_block(struct btrfs_root *root,
36 u64 bytenr, u32 blocksize);
37 struct btrfs_root *btrfs_read_fs_root(struct btrfs_fs_info *fs_info,
38 struct btrfs_key *location,
39 const char *name, int namelen);
40 struct btrfs_root *btrfs_read_fs_root_no_radix(struct btrfs_fs_info *fs_info,
41 struct btrfs_key *location);
42 int btrfs_insert_dev_radix(struct btrfs_root *root,
43 struct block_device *bdev,
47 void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr);
48 int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root);
49 void btrfs_mark_buffer_dirty(struct extent_buffer *buf);
50 int btrfs_buffer_uptodate(struct extent_buffer *buf);
51 int btrfs_set_buffer_uptodate(struct extent_buffer *buf);
52 int wait_on_tree_block_writeback(struct btrfs_root *root,
53 struct extent_buffer *buf);
54 void btrfs_set_buffer_defrag(struct extent_buffer *buf);
55 void btrfs_set_buffer_defrag_done(struct extent_buffer *buf);
56 int btrfs_buffer_defrag(struct extent_buffer *buf);
57 int btrfs_buffer_defrag_done(struct extent_buffer *buf);
58 int btrfs_clear_buffer_defrag(struct extent_buffer *buf);
59 int btrfs_clear_buffer_defrag_done(struct extent_buffer *buf);
60 int btrfs_read_buffer(struct extent_buffer *buf);
61 u32 btrfs_csum_data(struct btrfs_root *root, char *data, u32 seed, size_t len);
62 void btrfs_csum_final(u32 crc, char *result);