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#ifndef __DISKIO__
#define __DISKIO__
#include "list.h"
struct btrfs_buffer {
u64 blocknr;
int count;
struct list_head dirty;
struct list_head cache;
union {
struct btrfs_node node;
struct btrfs_leaf leaf;
};
};
struct btrfs_buffer *read_tree_block(struct btrfs_root *root, u64 blocknr);
struct btrfs_buffer *find_tree_block(struct btrfs_root *root, u64 blocknr);
int write_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct btrfs_buffer *buf);
int dirty_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct btrfs_buffer *buf);
int clean_tree_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_buffer *buf);
int btrfs_commit_transaction(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_super_block *s);
struct btrfs_root *open_ctree(char *filename, struct btrfs_super_block *s);
int close_ctree(struct btrfs_root *root, struct btrfs_super_block *s);
void btrfs_block_release(struct btrfs_root *root, struct btrfs_buffer *buf);
int write_ctree_super(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct btrfs_super_block *s);
int mkfs(int fd, u64 num_blocks, u32 blocksize);
#define BTRFS_SUPER_INFO_OFFSET (16 * 1024)
#endif
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