1/* SPDX-License-Identifier: GPL-2.0 */
 2
 3#ifndef BTRFS_EXTENT_TREE_H
 4#define BTRFS_EXTENT_TREE_H
 5
 6enum btrfs_inline_ref_type {
 7	BTRFS_REF_TYPE_INVALID,
 8	BTRFS_REF_TYPE_BLOCK,
 9	BTRFS_REF_TYPE_DATA,
10	BTRFS_REF_TYPE_ANY,
11};
12
13int btrfs_get_extent_inline_ref_type(const struct extent_buffer *eb,
14				     struct btrfs_extent_inline_ref *iref,
15				     enum btrfs_inline_ref_type is_data);
16u64 hash_extent_data_ref(u64 root_objectid, u64 owner, u64 offset);
17
18int btrfs_add_excluded_extent(struct btrfs_fs_info *fs_info,
19			      u64 start, u64 num_bytes);
20void btrfs_free_excluded_extents(struct btrfs_block_group *cache);
21int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, unsigned long count);
22void btrfs_cleanup_ref_head_accounting(struct btrfs_fs_info *fs_info,
23				  struct btrfs_delayed_ref_root *delayed_refs,
24				  struct btrfs_delayed_ref_head *head);
25int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len);
26int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans,
27			     struct btrfs_fs_info *fs_info, u64 bytenr,
28			     u64 offset, int metadata, u64 *refs, u64 *flags);
29int btrfs_pin_extent(struct btrfs_trans_handle *trans, u64 bytenr, u64 num,
30		     int reserved);
31int btrfs_pin_extent_for_log_replay(struct btrfs_trans_handle *trans,
32				    u64 bytenr, u64 num_bytes);
33int btrfs_exclude_logged_extents(struct extent_buffer *eb);
34int btrfs_cross_ref_exist(struct btrfs_root *root,
35			  u64 objectid, u64 offset, u64 bytenr, bool strict,
36			  struct btrfs_path *path);
37struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans,
38					     struct btrfs_root *root,
39					     u64 parent, u64 root_objectid,
40					     const struct btrfs_disk_key *key,
41					     int level, u64 hint,
42					     u64 empty_size,
43					     enum btrfs_lock_nesting nest);
44void btrfs_free_tree_block(struct btrfs_trans_handle *trans,
45			   u64 root_id,
46			   struct extent_buffer *buf,
47			   u64 parent, int last_ref);
48int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans,
49				     struct btrfs_root *root, u64 owner,
50				     u64 offset, u64 ram_bytes,
51				     struct btrfs_key *ins);
52int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans,
53				   u64 root_objectid, u64 owner, u64 offset,
54				   struct btrfs_key *ins);
55int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes, u64 num_bytes,
56			 u64 min_alloc_size, u64 empty_size, u64 hint_byte,
57			 struct btrfs_key *ins, int is_data, int delalloc);
58int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
59		  struct extent_buffer *buf, int full_backref);
60int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
61		  struct extent_buffer *buf, int full_backref);
62int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans,
63				struct extent_buffer *eb, u64 flags, int level);
64int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_ref *ref);
65
66int btrfs_free_reserved_extent(struct btrfs_fs_info *fs_info,
67			       u64 start, u64 len, int delalloc);
68int btrfs_pin_reserved_extent(struct btrfs_trans_handle *trans, u64 start, u64 len);
69int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans);
70int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, struct btrfs_ref *generic_ref);
71int __must_check btrfs_drop_snapshot(struct btrfs_root *root, int update_ref,
72				     int for_reloc);
73int btrfs_drop_subtree(struct btrfs_trans_handle *trans,
74			struct btrfs_root *root,
75			struct extent_buffer *node,
76			struct extent_buffer *parent);
77
78#endif