[deliverable/linux.git] / fs / btrfs / disk-io.h

#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);
struct tree_buffer *find_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, struct ctree_super_block *s);
int close_ctree(struct ctree_root *root);
void tree_block_release(struct ctree_root *root, struct tree_buffer *buf);
int write_ctree_super(struct ctree_root *root, struct ctree_super_block *s);
int mkfs(int fd);

#define CTREE_SUPER_INFO_OFFSET(bs) (16 * (bs))

#endif
Commit	Line	Data
eb60ceac CM	1	#ifndef __DISKIO__
	2	#define __DISKIO__
	3
	4	struct tree_buffer {
	5	u64 blocknr;
	6	int count;
	7	union {
	8	struct node node;
	9	struct leaf leaf;
	10	};
	11	};
	12
	13	struct tree_buffer read_tree_block(struct ctree_root root, u64 blocknr);
9a8dd150	14	struct tree_buffer find_tree_block(struct ctree_root root, u64 blocknr);
eb60ceac	15	int write_tree_block(struct ctree_root root, struct tree_buffer buf);
cfaa7295	16	struct ctree_root open_ctree(char filename, struct ctree_super_block *s);
eb60ceac CM	17	int close_ctree(struct ctree_root *root);
eb60ceac CM	18	void tree_block_release(struct ctree_root root, struct tree_buffer buf);
cfaa7295	19	int write_ctree_super(struct ctree_root root, struct ctree_super_block s);
d97e63b6 CM	20	int mkfs(int fd);
	21
	22	#define CTREE_SUPER_INFO_OFFSET(bs) (16 * (bs))
eb60ceac CM	23
eb60ceac CM	24	#endif