linux/fs/btrfs/disk-io.h
Chris Mason d97e63b69e Btrfs: early extent mapping support
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-02-20 16:40:44 -05:00

25 lines
640 B
C

#ifndef __DISKIO__
#define __DISKIO__
struct tree_buffer {
u64 blocknr;
int count;
union {
struct node node;
struct leaf leaf;
};
};
struct tree_buffer *read_tree_block(struct ctree_root *root, u64 blocknr);
int write_tree_block(struct ctree_root *root, struct tree_buffer *buf);
struct ctree_root *open_ctree(char *filename);
int close_ctree(struct ctree_root *root);
void tree_block_release(struct ctree_root *root, struct tree_buffer *buf);
struct tree_buffer *alloc_free_block(struct ctree_root *root);
int update_root_block(struct ctree_root *root);
int mkfs(int fd);
#define CTREE_SUPER_INFO_OFFSET(bs) (16 * (bs))
#endif