4 #include <linux/buffer_head.h>
6 #define BTRFS_SUPER_INFO_OFFSET (16 * 1024)
8 static inline struct btrfs_node *btrfs_buffer_node(struct buffer_head *bh)
10 return (struct btrfs_node *)bh->b_data;
13 static inline struct btrfs_leaf *btrfs_buffer_leaf(struct buffer_head *bh)
15 return (struct btrfs_leaf *)bh->b_data;
18 static inline struct btrfs_header *btrfs_buffer_header(struct buffer_head *bh)
20 return &((struct btrfs_node *)bh->b_data)->header;
23 struct buffer_head *read_tree_block(struct btrfs_root *root, u64 blocknr);
24 struct buffer_head *btrfs_find_create_tree_block(struct btrfs_root *root,
26 int write_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
27 struct buffer_head *buf);
28 int dirty_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
29 struct buffer_head *buf);
30 int clean_tree_block(struct btrfs_trans_handle *trans,
31 struct btrfs_root *root, struct buffer_head *buf);
32 int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
33 struct btrfs_root *root);
34 struct btrfs_root *open_ctree(struct super_block *sb);
35 int close_ctree(struct btrfs_root *root);
36 void btrfs_block_release(struct btrfs_root *root, struct buffer_head *buf);
37 int write_ctree_super(struct btrfs_trans_handle *trans,
38 struct btrfs_root *root);
39 struct buffer_head *btrfs_find_tree_block(struct btrfs_root *root, u64 blocknr);
40 int btrfs_csum_data(struct btrfs_root * root, char *data, size_t len,