1 /* SPDX-License-Identifier: GPL-2.0 */ 2 3 #ifndef BTRFS_EXTENT_TREE_H 4 #define BTRFS_EXTENT_TREE_H 5 6 enum 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 13 int 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); 16 u64 hash_extent_data_ref(u64 root_objectid, u64 owner, u64 offset); 17 18 int btrfs_add_excluded_extent(struct btrfs_fs_info *fs_info, 19 u64 start, u64 num_bytes); 20 void btrfs_free_excluded_extents(struct btrfs_block_group *cache); 21 int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, unsigned long count); 22 void 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); 25 int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len); 26 int 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); 29 int btrfs_pin_extent(struct btrfs_trans_handle *trans, u64 bytenr, u64 num, 30 int reserved); 31 int btrfs_pin_extent_for_log_replay(struct btrfs_trans_handle *trans, 32 u64 bytenr, u64 num_bytes); 33 int btrfs_exclude_logged_extents(struct extent_buffer *eb); 34 int btrfs_cross_ref_exist(struct btrfs_root *root, 35 u64 objectid, u64 offset, u64 bytenr, bool strict, 36 struct btrfs_path *path); 37 struct 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); 44 void btrfs_free_tree_block(struct btrfs_trans_handle *trans, 45 u64 root_id, 46 struct extent_buffer *buf, 47 u64 parent, int last_ref); 48 int 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); 52 int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, 53 u64 root_objectid, u64 owner, u64 offset, 54 struct btrfs_key *ins); 55 int 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); 58 int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, 59 struct extent_buffer *buf, int full_backref); 60 int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, 61 struct extent_buffer *buf, int full_backref); 62 int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, 63 struct extent_buffer *eb, u64 flags, int level); 64 int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_ref *ref); 65 66 int btrfs_free_reserved_extent(struct btrfs_fs_info *fs_info, 67 u64 start, u64 len, int delalloc); 68 int btrfs_pin_reserved_extent(struct btrfs_trans_handle *trans, u64 start, u64 len); 69 int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans); 70 int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, struct btrfs_ref *generic_ref); 71 int __must_check btrfs_drop_snapshot(struct btrfs_root *root, int update_ref, 72 int for_reloc); 73 int 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 79