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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * Copyright (C) 2015 Facebook. All rights reserved.4 */5 6#ifndef BTRFS_FREE_SPACE_TREE_H7#define BTRFS_FREE_SPACE_TREE_H8 9#include <linux/bits.h>10 11struct btrfs_caching_control;12struct btrfs_fs_info;13struct btrfs_path;14struct btrfs_block_group;15struct btrfs_trans_handle;16 17/*18 * The default size for new free space bitmap items. The last bitmap in a block19 * group may be truncated, and none of the free space tree code assumes that20 * existing bitmaps are this size.21 */22#define BTRFS_FREE_SPACE_BITMAP_SIZE 25623#define BTRFS_FREE_SPACE_BITMAP_BITS (BTRFS_FREE_SPACE_BITMAP_SIZE * BITS_PER_BYTE)24 25void set_free_space_tree_thresholds(struct btrfs_block_group *block_group);26int btrfs_create_free_space_tree(struct btrfs_fs_info *fs_info);27int btrfs_delete_free_space_tree(struct btrfs_fs_info *fs_info);28int btrfs_rebuild_free_space_tree(struct btrfs_fs_info *fs_info);29int load_free_space_tree(struct btrfs_caching_control *caching_ctl);30int add_block_group_free_space(struct btrfs_trans_handle *trans,31 struct btrfs_block_group *block_group);32int remove_block_group_free_space(struct btrfs_trans_handle *trans,33 struct btrfs_block_group *block_group);34int add_to_free_space_tree(struct btrfs_trans_handle *trans,35 u64 start, u64 size);36int remove_from_free_space_tree(struct btrfs_trans_handle *trans,37 u64 start, u64 size);38 39#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS40struct btrfs_free_space_info *41search_free_space_info(struct btrfs_trans_handle *trans,42 struct btrfs_block_group *block_group,43 struct btrfs_path *path, int cow);44int __add_to_free_space_tree(struct btrfs_trans_handle *trans,45 struct btrfs_block_group *block_group,46 struct btrfs_path *path, u64 start, u64 size);47int __remove_from_free_space_tree(struct btrfs_trans_handle *trans,48 struct btrfs_block_group *block_group,49 struct btrfs_path *path, u64 start, u64 size);50int convert_free_space_to_bitmaps(struct btrfs_trans_handle *trans,51 struct btrfs_block_group *block_group,52 struct btrfs_path *path);53int convert_free_space_to_extents(struct btrfs_trans_handle *trans,54 struct btrfs_block_group *block_group,55 struct btrfs_path *path);56int free_space_test_bit(struct btrfs_block_group *block_group,57 struct btrfs_path *path, u64 offset);58#endif59 60#endif61