2007-06-12 15:07:21 +02:00
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/*
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* Copyright (C) 2007 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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2007-02-02 15:18:22 +01:00
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#ifndef __DISKIO__
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#define __DISKIO__
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2007-03-22 17:13:20 +01:00
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#define BTRFS_SUPER_INFO_OFFSET (16 * 1024)
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2008-04-10 22:19:33 +02:00
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#define BTRFS_SUPER_INFO_SIZE 4096
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2008-03-24 20:01:56 +01:00
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struct btrfs_device;
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2008-03-24 20:02:07 +01:00
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struct btrfs_fs_devices;
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2007-03-22 17:13:20 +01:00
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2007-10-15 22:15:53 +02:00
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struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
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u32 blocksize);
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int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize);
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2007-10-15 22:14:19 +02:00
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struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root,
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2007-10-15 22:15:53 +02:00
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u64 bytenr, u32 blocksize);
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2007-03-16 21:20:31 +01:00
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int clean_tree_block(struct btrfs_trans_handle *trans,
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2007-10-15 22:14:19 +02:00
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struct btrfs_root *root, struct extent_buffer *buf);
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2008-03-24 20:02:07 +01:00
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struct btrfs_root *open_ctree(struct super_block *sb,
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struct btrfs_fs_devices *fs_devices);
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2007-03-22 17:13:20 +01:00
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int close_ctree(struct btrfs_root *root);
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2007-03-22 20:59:16 +01:00
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int write_ctree_super(struct btrfs_trans_handle *trans,
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struct btrfs_root *root);
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2007-10-15 22:14:19 +02:00
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struct extent_buffer *btrfs_find_tree_block(struct btrfs_root *root,
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2007-10-15 22:15:53 +02:00
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u64 bytenr, u32 blocksize);
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2008-01-08 21:46:30 +01:00
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struct btrfs_root *btrfs_lookup_fs_root(struct btrfs_fs_info *fs_info,
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u64 root_objectid);
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2007-04-09 16:42:37 +02:00
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struct btrfs_root *btrfs_read_fs_root(struct btrfs_fs_info *fs_info,
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2007-08-29 21:47:34 +02:00
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struct btrfs_key *location,
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const char *name, int namelen);
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2007-06-22 20:16:25 +02:00
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struct btrfs_root *btrfs_read_fs_root_no_radix(struct btrfs_fs_info *fs_info,
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struct btrfs_key *location);
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2007-12-21 22:27:24 +01:00
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struct btrfs_root *btrfs_read_fs_root_no_name(struct btrfs_fs_info *fs_info,
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struct btrfs_key *location);
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2007-04-12 16:43:05 +02:00
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int btrfs_insert_dev_radix(struct btrfs_root *root,
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struct block_device *bdev,
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2007-04-12 18:14:00 +02:00
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u64 device_id,
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2007-04-12 16:43:05 +02:00
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u64 block_start,
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u64 num_blocks);
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2007-09-17 16:58:06 +02:00
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void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr);
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2007-06-22 20:16:25 +02:00
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int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root);
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2007-10-15 22:14:19 +02:00
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void btrfs_mark_buffer_dirty(struct extent_buffer *buf);
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int btrfs_buffer_uptodate(struct extent_buffer *buf);
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int btrfs_set_buffer_uptodate(struct extent_buffer *buf);
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int wait_on_tree_block_writeback(struct btrfs_root *root,
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struct extent_buffer *buf);
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2007-10-15 22:17:34 +02:00
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void btrfs_set_buffer_defrag(struct extent_buffer *buf);
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void btrfs_set_buffer_defrag_done(struct extent_buffer *buf);
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int btrfs_buffer_defrag(struct extent_buffer *buf);
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int btrfs_buffer_defrag_done(struct extent_buffer *buf);
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int btrfs_clear_buffer_defrag(struct extent_buffer *buf);
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int btrfs_clear_buffer_defrag_done(struct extent_buffer *buf);
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int btrfs_read_buffer(struct extent_buffer *buf);
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2007-10-15 22:22:25 +02:00
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u32 btrfs_csum_data(struct btrfs_root *root, char *data, u32 seed, size_t len);
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void btrfs_csum_final(u32 crc, char *result);
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2008-01-08 21:46:30 +01:00
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void btrfs_throttle(struct btrfs_root *root);
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2008-03-24 20:01:56 +01:00
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int btrfs_open_device(struct btrfs_device *dev);
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2008-04-01 19:48:14 +02:00
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int btrfs_verify_block_csum(struct btrfs_root *root,
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struct extent_buffer *buf);
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2008-04-09 22:28:12 +02:00
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int btrfs_bio_wq_end_io(struct btrfs_fs_info *info, struct bio *bio,
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int metadata);
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2008-04-16 17:14:51 +02:00
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int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode,
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int rw, struct bio *bio, int mirror_num,
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extent_submit_bio_hook_t *submit_bio_hook);
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2007-02-02 15:18:22 +01:00
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#endif
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