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19#ifndef __BTRFS_BACKREF__
20#define __BTRFS_BACKREF__
21
22#include <linux/btrfs.h>
23#include "ulist.h"
24#include "extent_io.h"
25
26#define BTRFS_BACKREF_SEARCH_COMMIT_ROOT ((struct btrfs_trans_handle *)0)
27
28struct inode_fs_paths {
29 struct btrfs_path *btrfs_path;
30 struct btrfs_root *fs_root;
31 struct btrfs_data_container *fspath;
32};
33
34typedef int (iterate_extent_inodes_t)(u64 inum, u64 offset, u64 root,
35 void *ctx);
36
37int inode_item_info(u64 inum, u64 ioff, struct btrfs_root *fs_root,
38 struct btrfs_path *path);
39
40int extent_from_logical(struct btrfs_fs_info *fs_info, u64 logical,
41 struct btrfs_path *path, struct btrfs_key *found_key,
42 u64 *flags);
43
44int tree_backref_for_extent(unsigned long *ptr, struct extent_buffer *eb,
45 struct btrfs_extent_item *ei, u32 item_size,
46 u64 *out_root, u8 *out_level);
47
48int iterate_extent_inodes(struct btrfs_fs_info *fs_info,
49 u64 extent_item_objectid,
50 u64 extent_offset, int search_commit_root,
51 iterate_extent_inodes_t *iterate, void *ctx);
52
53int iterate_inodes_from_logical(u64 logical, struct btrfs_fs_info *fs_info,
54 struct btrfs_path *path,
55 iterate_extent_inodes_t *iterate, void *ctx);
56
57int paths_from_inode(u64 inum, struct inode_fs_paths *ipath);
58
59int btrfs_find_all_roots(struct btrfs_trans_handle *trans,
60 struct btrfs_fs_info *fs_info, u64 bytenr,
61 u64 time_seq, struct ulist **roots);
62char *btrfs_ref_to_path(struct btrfs_root *fs_root, struct btrfs_path *path,
63 u32 name_len, unsigned long name_off,
64 struct extent_buffer *eb_in, u64 parent,
65 char *dest, u32 size);
66
67struct btrfs_data_container *init_data_container(u32 total_bytes);
68struct inode_fs_paths *init_ipath(s32 total_bytes, struct btrfs_root *fs_root,
69 struct btrfs_path *path);
70void free_ipath(struct inode_fs_paths *ipath);
71
72int btrfs_find_one_extref(struct btrfs_root *root, u64 inode_objectid,
73 u64 start_off, struct btrfs_path *path,
74 struct btrfs_inode_extref **ret_extref,
75 u64 *found_off);
76
77#endif
78