btrfs: Remove fs_info from insert_extent_data_ref
[sfrench/cifs-2.6.git] / fs / btrfs / backref.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Copyright (C) 2011 STRATO.  All rights reserved.
4  */
5
6 #ifndef BTRFS_BACKREF_H
7 #define BTRFS_BACKREF_H
8
9 #include <linux/btrfs.h>
10 #include "ulist.h"
11 #include "extent_io.h"
12
13 struct inode_fs_paths {
14         struct btrfs_path               *btrfs_path;
15         struct btrfs_root               *fs_root;
16         struct btrfs_data_container     *fspath;
17 };
18
19 typedef int (iterate_extent_inodes_t)(u64 inum, u64 offset, u64 root,
20                 void *ctx);
21
22 int extent_from_logical(struct btrfs_fs_info *fs_info, u64 logical,
23                         struct btrfs_path *path, struct btrfs_key *found_key,
24                         u64 *flags);
25
26 int tree_backref_for_extent(unsigned long *ptr, struct extent_buffer *eb,
27                             struct btrfs_key *key, struct btrfs_extent_item *ei,
28                             u32 item_size, u64 *out_root, u8 *out_level);
29
30 int iterate_extent_inodes(struct btrfs_fs_info *fs_info,
31                                 u64 extent_item_objectid,
32                                 u64 extent_offset, int search_commit_root,
33                                 iterate_extent_inodes_t *iterate, void *ctx,
34                                 bool ignore_offset);
35
36 int iterate_inodes_from_logical(u64 logical, struct btrfs_fs_info *fs_info,
37                                 struct btrfs_path *path,
38                                 iterate_extent_inodes_t *iterate, void *ctx,
39                                 bool ignore_offset);
40
41 int paths_from_inode(u64 inum, struct inode_fs_paths *ipath);
42
43 int btrfs_find_all_roots(struct btrfs_trans_handle *trans,
44                          struct btrfs_fs_info *fs_info, u64 bytenr,
45                          u64 time_seq, struct ulist **roots, bool ignore_offset);
46 char *btrfs_ref_to_path(struct btrfs_root *fs_root, struct btrfs_path *path,
47                         u32 name_len, unsigned long name_off,
48                         struct extent_buffer *eb_in, u64 parent,
49                         char *dest, u32 size);
50
51 struct btrfs_data_container *init_data_container(u32 total_bytes);
52 struct inode_fs_paths *init_ipath(s32 total_bytes, struct btrfs_root *fs_root,
53                                         struct btrfs_path *path);
54 void free_ipath(struct inode_fs_paths *ipath);
55
56 int btrfs_find_one_extref(struct btrfs_root *root, u64 inode_objectid,
57                           u64 start_off, struct btrfs_path *path,
58                           struct btrfs_inode_extref **ret_extref,
59                           u64 *found_off);
60 int btrfs_check_shared(struct btrfs_root *root, u64 inum, u64 bytenr);
61
62 int __init btrfs_prelim_ref_init(void);
63 void __cold btrfs_prelim_ref_exit(void);
64
65 struct prelim_ref {
66         struct rb_node rbnode;
67         u64 root_id;
68         struct btrfs_key key_for_search;
69         int level;
70         int count;
71         struct extent_inode_elem *inode_list;
72         u64 parent;
73         u64 wanted_disk_byte;
74 };
75
76 #endif