| #ifndef __DISKIO__ |
| #define __DISKIO__ |
| |
| #include <linux/buffer_head.h> |
| |
| #define BTRFS_SUPER_INFO_OFFSET (16 * 1024) |
| |
| 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); |
| struct buffer_head *find_tree_block(struct btrfs_root *root, u64 blocknr); |
| int write_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
| struct buffer_head *buf); |
| int dirty_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
| struct buffer_head *buf); |
| int clean_tree_block(struct btrfs_trans_handle *trans, |
| struct btrfs_root *root, struct buffer_head *buf); |
| int btrfs_commit_transaction(struct btrfs_trans_handle *trans, |
| struct btrfs_root *root); |
| struct btrfs_root *open_ctree(struct super_block *sb, |
| struct buffer_head *sb_buffer, |
| struct btrfs_super_block *disk_super); |
| int close_ctree(struct btrfs_root *root); |
| void btrfs_block_release(struct btrfs_root *root, struct buffer_head *buf); |
| int write_ctree_super(struct btrfs_trans_handle *trans, |
| struct btrfs_root *root); |
| int mkfs(int fd, u64 num_blocks, u32 blocksize); |
| #endif |