Add backing store, memory management
[platform/upstream/btrfs-progs.git] / disk-io.h
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);
14 int write_tree_block(struct ctree_root *root, struct tree_buffer *buf);
15 struct ctree_root *open_ctree(char *filename);
16 int close_ctree(struct ctree_root *root);
17 void tree_block_release(struct ctree_root *root, struct tree_buffer *buf);
18 struct tree_buffer *alloc_free_block(struct ctree_root *root);
19 int update_root_block(struct ctree_root *root);
20
21 #endif