2007-06-12 07:07:21 -06:00
|
|
|
/*
|
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
|
2007-02-02 07:18:22 -07:00
|
|
|
#ifndef __DISKIO__
|
|
|
|
#define __DISKIO__
|
|
|
|
|
2007-03-22 10:13:20 -06:00
|
|
|
#include <linux/buffer_head.h>
|
2007-02-02 07:18:22 -07:00
|
|
|
|
2007-03-22 10:13:20 -06:00
|
|
|
#define BTRFS_SUPER_INFO_OFFSET (16 * 1024)
|
|
|
|
|
2007-05-01 06:53:32 -06:00
|
|
|
enum btrfs_bh_state_bits {
|
|
|
|
BH_Checked = BH_PrivateStart,
|
|
|
|
};
|
|
|
|
BUFFER_FNS(Checked, checked);
|
|
|
|
|
2007-03-22 10:13:20 -06:00
|
|
|
static inline struct btrfs_node *btrfs_buffer_node(struct buffer_head *bh)
|
|
|
|
{
|
|
|
|
return (struct btrfs_node *)bh->b_data;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline struct btrfs_leaf *btrfs_buffer_leaf(struct buffer_head *bh)
|
|
|
|
{
|
|
|
|
return (struct btrfs_leaf *)bh->b_data;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline struct btrfs_header *btrfs_buffer_header(struct buffer_head *bh)
|
|
|
|
{
|
|
|
|
return &((struct btrfs_node *)bh->b_data)->header;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct buffer_head *read_tree_block(struct btrfs_root *root, u64 blocknr);
|
2007-05-01 06:53:32 -06:00
|
|
|
int readahead_tree_block(struct btrfs_root *root, u64 blocknr);
|
2007-03-28 11:57:48 -06:00
|
|
|
struct buffer_head *btrfs_find_create_tree_block(struct btrfs_root *root,
|
|
|
|
u64 blocknr);
|
2007-03-16 14:20:31 -06:00
|
|
|
int write_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
|
2007-03-22 10:13:20 -06:00
|
|
|
struct buffer_head *buf);
|
2007-03-16 14:20:31 -06:00
|
|
|
int dirty_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
|
2007-03-22 10:13:20 -06:00
|
|
|
struct buffer_head *buf);
|
2007-03-16 14:20:31 -06:00
|
|
|
int clean_tree_block(struct btrfs_trans_handle *trans,
|
2007-03-22 10:13:20 -06:00
|
|
|
struct btrfs_root *root, struct buffer_head *buf);
|
2007-03-22 13:59:16 -06:00
|
|
|
int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
|
|
|
|
struct btrfs_root *root);
|
2007-04-02 08:50:19 -06:00
|
|
|
struct btrfs_root *open_ctree(struct super_block *sb);
|
2007-03-22 10:13:20 -06:00
|
|
|
int close_ctree(struct btrfs_root *root);
|
|
|
|
void btrfs_block_release(struct btrfs_root *root, struct buffer_head *buf);
|
2007-03-22 13:59:16 -06:00
|
|
|
int write_ctree_super(struct btrfs_trans_handle *trans,
|
|
|
|
struct btrfs_root *root);
|
2007-03-28 11:57:48 -06:00
|
|
|
struct buffer_head *btrfs_find_tree_block(struct btrfs_root *root, u64 blocknr);
|
2007-03-29 13:15:27 -06:00
|
|
|
int btrfs_csum_data(struct btrfs_root * root, char *data, size_t len,
|
|
|
|
char *result);
|
2007-04-09 08:42:37 -06:00
|
|
|
struct btrfs_root *btrfs_read_fs_root(struct btrfs_fs_info *fs_info,
|
|
|
|
struct btrfs_key *location);
|
2007-06-22 12:16:25 -06:00
|
|
|
struct btrfs_root *btrfs_read_fs_root_no_radix(struct btrfs_fs_info *fs_info,
|
|
|
|
struct btrfs_key *location);
|
2007-04-11 13:53:25 -06:00
|
|
|
u64 bh_blocknr(struct buffer_head *bh);
|
2007-04-12 08:43:05 -06:00
|
|
|
int btrfs_insert_dev_radix(struct btrfs_root *root,
|
|
|
|
struct block_device *bdev,
|
2007-04-12 10:14:00 -06:00
|
|
|
u64 device_id,
|
2007-04-12 08:43:05 -06:00
|
|
|
u64 block_start,
|
|
|
|
u64 num_blocks);
|
|
|
|
int btrfs_map_bh_to_logical(struct btrfs_root *root, struct buffer_head *bh,
|
|
|
|
u64 logical);
|
2007-05-02 13:53:43 -06:00
|
|
|
int btrfs_releasepage(struct page *page, gfp_t flags);
|
|
|
|
void btrfs_btree_balance_dirty(struct btrfs_root *root);
|
2007-06-22 12:16:25 -06:00
|
|
|
int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root);
|
2007-02-02 07:18:22 -07:00
|
|
|
#endif
|