disk-io.h (2e635a278354a1a7951e16cfea4c247d6d0e7c99) disk-io.h (e20d96d64f9cf9288ffecc9ad4714e91c3b97ca8)
1#ifndef __DISKIO__
2#define __DISKIO__
1#ifndef __DISKIO__
2#define __DISKIO__
3#include "list.h"
4
3
5struct btrfs_buffer {
6 u64 blocknr;
7 int count;
8 struct list_head dirty;
9 struct list_head cache;
10 union {
11 struct btrfs_node node;
12 struct btrfs_leaf leaf;
13 };
14};
4#include <linux/buffer_head.h>
15
5
16struct btrfs_buffer *read_tree_block(struct btrfs_root *root, u64 blocknr);
17struct btrfs_buffer *find_tree_block(struct btrfs_root *root, u64 blocknr);
6#define BTRFS_SUPER_INFO_OFFSET (16 * 1024)
7
8static inline struct btrfs_node *btrfs_buffer_node(struct buffer_head *bh)
9{
10 return (struct btrfs_node *)bh->b_data;
11}
12
13static inline struct btrfs_leaf *btrfs_buffer_leaf(struct buffer_head *bh)
14{
15 return (struct btrfs_leaf *)bh->b_data;
16}
17
18static inline struct btrfs_header *btrfs_buffer_header(struct buffer_head *bh)
19{
20 return &((struct btrfs_node *)bh->b_data)->header;
21}
22
23struct buffer_head *read_tree_block(struct btrfs_root *root, u64 blocknr);
24struct buffer_head *find_tree_block(struct btrfs_root *root, u64 blocknr);
18int write_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
25int write_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
19 struct btrfs_buffer *buf);
26 struct buffer_head *buf);
20int dirty_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
27int dirty_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
21 struct btrfs_buffer *buf);
28 struct buffer_head *buf);
22int clean_tree_block(struct btrfs_trans_handle *trans,
29int clean_tree_block(struct btrfs_trans_handle *trans,
23 struct btrfs_root *root, struct btrfs_buffer *buf);
30 struct btrfs_root *root, struct buffer_head *buf);
24int btrfs_commit_transaction(struct btrfs_trans_handle *trans, struct btrfs_root
25 *root, struct btrfs_super_block *s);
31int btrfs_commit_transaction(struct btrfs_trans_handle *trans, struct btrfs_root
32 *root, struct btrfs_super_block *s);
26struct btrfs_root *open_ctree(char *filename, struct btrfs_super_block *s);
27struct btrfs_root *open_ctree_fd(int fp, struct btrfs_super_block *super);
28int close_ctree(struct btrfs_root *root, struct btrfs_super_block *s);
29void btrfs_block_release(struct btrfs_root *root, struct btrfs_buffer *buf);
33struct btrfs_root *open_ctree(struct super_block *sb,
34 struct buffer_head *sb_buffer,
35 struct btrfs_super_block *disk_super);
36int close_ctree(struct btrfs_root *root);
37void btrfs_block_release(struct btrfs_root *root, struct buffer_head *buf);
30int write_ctree_super(struct btrfs_trans_handle *trans, struct btrfs_root *root,
31 struct btrfs_super_block *s);
32int mkfs(int fd, u64 num_blocks, u32 blocksize);
38int write_ctree_super(struct btrfs_trans_handle *trans, struct btrfs_root *root,
39 struct btrfs_super_block *s);
40int mkfs(int fd, u64 num_blocks, u32 blocksize);
33
34#define BTRFS_SUPER_INFO_OFFSET (16 * 1024)
35
36#endif
41#endif