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free-space-tree.h
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free-space-tree.h
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2015 Facebook. All rights reserved.
*/
#ifndef APFS_FREE_SPACE_TREE_H
#define APFS_FREE_SPACE_TREE_H
struct apfs_caching_control;
/*
* The default size for new free space bitmap items. The last bitmap in a block
* group may be truncated, and none of the free space tree code assumes that
* existing bitmaps are this size.
*/
#define APFS_FREE_SPACE_BITMAP_SIZE 256
#define APFS_FREE_SPACE_BITMAP_BITS (APFS_FREE_SPACE_BITMAP_SIZE * BITS_PER_BYTE)
void set_free_space_tree_thresholds(struct apfs_block_group *block_group);
int apfs_create_free_space_tree(struct apfs_fs_info *fs_info);
int apfs_clear_free_space_tree(struct apfs_fs_info *fs_info);
int load_free_space_tree(struct apfs_caching_control *caching_ctl);
int add_block_group_free_space(struct apfs_trans_handle *trans,
struct apfs_block_group *block_group);
int remove_block_group_free_space(struct apfs_trans_handle *trans,
struct apfs_block_group *block_group);
int add_to_free_space_tree(struct apfs_trans_handle *trans,
u64 start, u64 size);
int remove_from_free_space_tree(struct apfs_trans_handle *trans,
u64 start, u64 size);
#ifdef CONFIG_APFS_FS_RUN_SANITY_TESTS
struct apfs_free_space_info *
search_free_space_info(struct apfs_trans_handle *trans,
struct apfs_block_group *block_group,
struct apfs_path *path, int cow);
int __add_to_free_space_tree(struct apfs_trans_handle *trans,
struct apfs_block_group *block_group,
struct apfs_path *path, u64 start, u64 size);
int __remove_from_free_space_tree(struct apfs_trans_handle *trans,
struct apfs_block_group *block_group,
struct apfs_path *path, u64 start, u64 size);
int convert_free_space_to_bitmaps(struct apfs_trans_handle *trans,
struct apfs_block_group *block_group,
struct apfs_path *path);
int convert_free_space_to_extents(struct apfs_trans_handle *trans,
struct apfs_block_group *block_group,
struct apfs_path *path);
int free_space_test_bit(struct apfs_block_group *block_group,
struct apfs_path *path, u64 offset);
#endif
#endif