45 lines
1.6 KiB
C
45 lines
1.6 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 *btrfs_find_create_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);
|
|
struct buffer_head *btrfs_find_tree_block(struct btrfs_root *root, u64 blocknr);
|
|
int btrfs_csum_data(struct btrfs_root * root, char *data, size_t len,
|
|
char *result);
|
|
#endif
|