42 lines
1.5 KiB
C
42 lines
1.5 KiB
C
#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
|