| /* |
| * Copyright (C) 2007 Oracle. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public |
| * License v2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public |
| * License along with this program; if not, write to the |
| * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| * Boston, MA 021110-1307, USA. |
| */ |
| |
| #ifndef __DISKIO__ |
| #define __DISKIO__ |
| |
| #define BTRFS_SUPER_INFO_OFFSET (16 * 1024) |
| #define BTRFS_SUPER_INFO_SIZE 4096 |
| struct btrfs_device; |
| struct btrfs_fs_devices; |
| |
| struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr, |
| u32 blocksize, u64 parent_transid); |
| int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize, |
| u64 parent_transid); |
| struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root, |
| u64 bytenr, u32 blocksize); |
| int clean_tree_block(struct btrfs_trans_handle *trans, |
| struct btrfs_root *root, struct extent_buffer *buf); |
| struct btrfs_root *open_ctree(struct super_block *sb, |
| struct btrfs_fs_devices *fs_devices, |
| char *options); |
| int close_ctree(struct btrfs_root *root); |
| int write_ctree_super(struct btrfs_trans_handle *trans, |
| struct btrfs_root *root); |
| int btrfs_commit_super(struct btrfs_root *root); |
| struct extent_buffer *btrfs_find_tree_block(struct btrfs_root *root, |
| u64 bytenr, u32 blocksize); |
| struct btrfs_root *btrfs_lookup_fs_root(struct btrfs_fs_info *fs_info, |
| u64 root_objectid); |
| struct btrfs_root *btrfs_read_fs_root(struct btrfs_fs_info *fs_info, |
| struct btrfs_key *location, |
| const char *name, int namelen); |
| struct btrfs_root *btrfs_read_fs_root_no_radix(struct btrfs_root *tree_root, |
| struct btrfs_key *location); |
| struct btrfs_root *btrfs_read_fs_root_no_name(struct btrfs_fs_info *fs_info, |
| struct btrfs_key *location); |
| int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info); |
| int btrfs_insert_dev_radix(struct btrfs_root *root, |
| struct block_device *bdev, |
| u64 device_id, |
| u64 block_start, |
| u64 num_blocks); |
| void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr); |
| int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root); |
| void btrfs_mark_buffer_dirty(struct extent_buffer *buf); |
| int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid); |
| int btrfs_set_buffer_uptodate(struct extent_buffer *buf); |
| int wait_on_tree_block_writeback(struct btrfs_root *root, |
| struct extent_buffer *buf); |
| int btrfs_read_buffer(struct extent_buffer *buf, u64 parent_transid); |
| u32 btrfs_csum_data(struct btrfs_root *root, char *data, u32 seed, size_t len); |
| void btrfs_csum_final(u32 crc, char *result); |
| int btrfs_open_device(struct btrfs_device *dev); |
| int btrfs_verify_block_csum(struct btrfs_root *root, |
| struct extent_buffer *buf); |
| int btrfs_bio_wq_end_io(struct btrfs_fs_info *info, struct bio *bio, |
| int metadata); |
| int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode, |
| int rw, struct bio *bio, int mirror_num, |
| unsigned long bio_flags, |
| extent_submit_bio_hook_t *submit_bio_start, |
| extent_submit_bio_hook_t *submit_bio_done); |
| |
| int btrfs_congested_async(struct btrfs_fs_info *info, int iodone); |
| unsigned long btrfs_async_submit_limit(struct btrfs_fs_info *info); |
| int btrfs_write_tree_block(struct extent_buffer *buf); |
| int btrfs_wait_tree_block_writeback(struct extent_buffer *buf); |
| int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans, |
| struct btrfs_fs_info *fs_info); |
| int btrfs_init_log_root_tree(struct btrfs_trans_handle *trans, |
| struct btrfs_fs_info *fs_info); |
| int btree_lock_page_hook(struct page *page); |
| #endif |