blob: 6b6fdc697f31a9e7d404f4b375e1ee5dd2423ac4 [file] [log] [blame]
Chris Mason6cbd5572007-06-12 09:07:21 -04001/*
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 Masoneb60cea2007-02-02 09:18:22 -050019#ifndef __DISKIO__
20#define __DISKIO__
21
Chris Mason123abc82007-03-14 14:14:43 -040022#define BTRFS_SUPER_INFO_OFFSET (16 * 1024)
Chris Masonf2984462008-04-10 16:19:33 -040023#define BTRFS_SUPER_INFO_SIZE 4096
Chris Mason0b86a832008-03-24 15:01:56 -040024struct btrfs_device;
Chris Mason8a4b83c2008-03-24 15:02:07 -040025struct btrfs_fs_devices;
Chris Masoneb60cea2007-02-02 09:18:22 -050026
Chris Masondb945352007-10-15 16:15:53 -040027struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
Chris Masonca7a79a2008-05-12 12:59:19 -040028 u32 blocksize, u64 parent_transid);
29int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize,
30 u64 parent_transid);
Chris Mason5f39d392007-10-15 16:14:19 -040031struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root,
Chris Masondb945352007-10-15 16:15:53 -040032 u64 bytenr, u32 blocksize);
Chris Masone20d96d2007-03-22 12:13:20 -040033int clean_tree_block(struct btrfs_trans_handle *trans,
Chris Mason5f39d392007-10-15 16:14:19 -040034 struct btrfs_root *root, struct extent_buffer *buf);
Chris Mason8a4b83c2008-03-24 15:02:07 -040035struct btrfs_root *open_ctree(struct super_block *sb,
Chris Masondfe25022008-05-13 13:46:40 -040036 struct btrfs_fs_devices *fs_devices,
37 char *options);
Chris Masone20d96d2007-03-22 12:13:20 -040038int close_ctree(struct btrfs_root *root);
Chris Mason79154b12007-03-22 15:59:16 -040039int write_ctree_super(struct btrfs_trans_handle *trans,
40 struct btrfs_root *root);
Chris Mason5f39d392007-10-15 16:14:19 -040041struct extent_buffer *btrfs_find_tree_block(struct btrfs_root *root,
Chris Masondb945352007-10-15 16:15:53 -040042 u64 bytenr, u32 blocksize);
Chris Masondc17ff82008-01-08 15:46:30 -050043struct btrfs_root *btrfs_lookup_fs_root(struct btrfs_fs_info *fs_info,
44 u64 root_objectid);
Chris Mason0f7d52f2007-04-09 10:42:37 -040045struct btrfs_root *btrfs_read_fs_root(struct btrfs_fs_info *fs_info,
Josef Bacik58176a92007-08-29 15:47:34 -040046 struct btrfs_key *location,
47 const char *name, int namelen);
Chris Masone02119d2008-09-05 16:13:11 -040048struct btrfs_root *btrfs_read_fs_root_no_radix(struct btrfs_root *tree_root,
Chris Mason5eda7b52007-06-22 14:16:25 -040049 struct btrfs_key *location);
Chris Masonedbd8d42007-12-21 16:27:24 -050050struct btrfs_root *btrfs_read_fs_root_no_name(struct btrfs_fs_info *fs_info,
51 struct btrfs_key *location);
Chris Mason8352d8a2007-04-12 10:43:05 -040052int btrfs_insert_dev_radix(struct btrfs_root *root,
53 struct block_device *bdev,
Chris Masonb4100d62007-04-12 12:14:00 -040054 u64 device_id,
Chris Mason8352d8a2007-04-12 10:43:05 -040055 u64 block_start,
56 u64 num_blocks);
Chris Masond3c2fdcf2007-09-17 10:58:06 -040057void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr);
Chris Mason5eda7b52007-06-22 14:16:25 -040058int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root);
Chris Mason5f39d392007-10-15 16:14:19 -040059void btrfs_mark_buffer_dirty(struct extent_buffer *buf);
Chris Mason1259ab72008-05-12 13:39:03 -040060int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid);
Chris Mason5f39d392007-10-15 16:14:19 -040061int btrfs_set_buffer_uptodate(struct extent_buffer *buf);
62int wait_on_tree_block_writeback(struct btrfs_root *root,
63 struct extent_buffer *buf);
Chris Masonca7a79a2008-05-12 12:59:19 -040064int btrfs_read_buffer(struct extent_buffer *buf, u64 parent_transid);
Chris Masonff79f812007-10-15 16:22:25 -040065u32 btrfs_csum_data(struct btrfs_root *root, char *data, u32 seed, size_t len);
66void btrfs_csum_final(u32 crc, char *result);
Chris Mason0b86a832008-03-24 15:01:56 -040067int btrfs_open_device(struct btrfs_device *dev);
Chris Mason0999df52008-04-01 13:48:14 -040068int btrfs_verify_block_csum(struct btrfs_root *root,
69 struct extent_buffer *buf);
Chris Mason22c59942008-04-09 16:28:12 -040070int btrfs_bio_wq_end_io(struct btrfs_fs_info *info, struct bio *bio,
71 int metadata);
Chris Mason44b8bd72008-04-16 11:14:51 -040072int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode,
73 int rw, struct bio *bio, int mirror_num,
74 extent_submit_bio_hook_t *submit_bio_hook);
Chris Mason777e6bd2008-08-15 15:34:15 -040075int btrfs_congested_async(struct btrfs_fs_info *info, int iodone);
Chris Masonb64a2852008-08-20 13:39:41 -040076unsigned long btrfs_async_submit_limit(struct btrfs_fs_info *info);
Chris Masone02119d2008-09-05 16:13:11 -040077int btrfs_write_tree_block(struct extent_buffer *buf);
78int btrfs_wait_tree_block_writeback(struct extent_buffer *buf);
79int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
80 struct btrfs_fs_info *fs_info);
81int btrfs_init_log_root_tree(struct btrfs_trans_handle *trans,
82 struct btrfs_fs_info *fs_info);
Chris Masoneb60cea2007-02-02 09:18:22 -050083#endif