18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * Copyright (C) 2015 Facebook. All rights reserved. 48c2ecf20Sopenharmony_ci */ 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ci#ifndef BTRFS_FREE_SPACE_TREE_H 78c2ecf20Sopenharmony_ci#define BTRFS_FREE_SPACE_TREE_H 88c2ecf20Sopenharmony_ci 98c2ecf20Sopenharmony_cistruct btrfs_caching_control; 108c2ecf20Sopenharmony_ci 118c2ecf20Sopenharmony_ci/* 128c2ecf20Sopenharmony_ci * The default size for new free space bitmap items. The last bitmap in a block 138c2ecf20Sopenharmony_ci * group may be truncated, and none of the free space tree code assumes that 148c2ecf20Sopenharmony_ci * existing bitmaps are this size. 158c2ecf20Sopenharmony_ci */ 168c2ecf20Sopenharmony_ci#define BTRFS_FREE_SPACE_BITMAP_SIZE 256 178c2ecf20Sopenharmony_ci#define BTRFS_FREE_SPACE_BITMAP_BITS (BTRFS_FREE_SPACE_BITMAP_SIZE * BITS_PER_BYTE) 188c2ecf20Sopenharmony_ci 198c2ecf20Sopenharmony_civoid set_free_space_tree_thresholds(struct btrfs_block_group *block_group); 208c2ecf20Sopenharmony_ciint btrfs_create_free_space_tree(struct btrfs_fs_info *fs_info); 218c2ecf20Sopenharmony_ciint btrfs_clear_free_space_tree(struct btrfs_fs_info *fs_info); 228c2ecf20Sopenharmony_ciint load_free_space_tree(struct btrfs_caching_control *caching_ctl); 238c2ecf20Sopenharmony_ciint add_block_group_free_space(struct btrfs_trans_handle *trans, 248c2ecf20Sopenharmony_ci struct btrfs_block_group *block_group); 258c2ecf20Sopenharmony_ciint remove_block_group_free_space(struct btrfs_trans_handle *trans, 268c2ecf20Sopenharmony_ci struct btrfs_block_group *block_group); 278c2ecf20Sopenharmony_ciint add_to_free_space_tree(struct btrfs_trans_handle *trans, 288c2ecf20Sopenharmony_ci u64 start, u64 size); 298c2ecf20Sopenharmony_ciint remove_from_free_space_tree(struct btrfs_trans_handle *trans, 308c2ecf20Sopenharmony_ci u64 start, u64 size); 318c2ecf20Sopenharmony_ci 328c2ecf20Sopenharmony_ci#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS 338c2ecf20Sopenharmony_cistruct btrfs_free_space_info * 348c2ecf20Sopenharmony_cisearch_free_space_info(struct btrfs_trans_handle *trans, 358c2ecf20Sopenharmony_ci struct btrfs_block_group *block_group, 368c2ecf20Sopenharmony_ci struct btrfs_path *path, int cow); 378c2ecf20Sopenharmony_ciint __add_to_free_space_tree(struct btrfs_trans_handle *trans, 388c2ecf20Sopenharmony_ci struct btrfs_block_group *block_group, 398c2ecf20Sopenharmony_ci struct btrfs_path *path, u64 start, u64 size); 408c2ecf20Sopenharmony_ciint __remove_from_free_space_tree(struct btrfs_trans_handle *trans, 418c2ecf20Sopenharmony_ci struct btrfs_block_group *block_group, 428c2ecf20Sopenharmony_ci struct btrfs_path *path, u64 start, u64 size); 438c2ecf20Sopenharmony_ciint convert_free_space_to_bitmaps(struct btrfs_trans_handle *trans, 448c2ecf20Sopenharmony_ci struct btrfs_block_group *block_group, 458c2ecf20Sopenharmony_ci struct btrfs_path *path); 468c2ecf20Sopenharmony_ciint convert_free_space_to_extents(struct btrfs_trans_handle *trans, 478c2ecf20Sopenharmony_ci struct btrfs_block_group *block_group, 488c2ecf20Sopenharmony_ci struct btrfs_path *path); 498c2ecf20Sopenharmony_ciint free_space_test_bit(struct btrfs_block_group *block_group, 508c2ecf20Sopenharmony_ci struct btrfs_path *path, u64 offset); 518c2ecf20Sopenharmony_ci#endif 528c2ecf20Sopenharmony_ci 538c2ecf20Sopenharmony_ci#endif 54