linux/fs/btrfs/free-space-tree.h
David Sterba 602035d7fe btrfs: add forward declarations and headers, part 2
Do a cleanup in more headers:

- add forward declarations for types referenced by pointers
- add includes when types need them

This fixes potential compilation problems if the headers are reordered
or the missing includes are not provided indirectly.

Signed-off-by: David Sterba <dsterba@suse.com>
2024-03-04 16:24:49 +01:00

61 lines
2.3 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2015 Facebook. All rights reserved.
*/
#ifndef BTRFS_FREE_SPACE_TREE_H
#define BTRFS_FREE_SPACE_TREE_H
#include <linux/bits.h>
struct btrfs_caching_control;
struct btrfs_fs_info;
struct btrfs_path;
struct btrfs_block_group;
struct btrfs_trans_handle;
/*
* 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 BTRFS_FREE_SPACE_BITMAP_SIZE 256
#define BTRFS_FREE_SPACE_BITMAP_BITS (BTRFS_FREE_SPACE_BITMAP_SIZE * BITS_PER_BYTE)
void set_free_space_tree_thresholds(struct btrfs_block_group *block_group);
int btrfs_create_free_space_tree(struct btrfs_fs_info *fs_info);
int btrfs_delete_free_space_tree(struct btrfs_fs_info *fs_info);
int btrfs_rebuild_free_space_tree(struct btrfs_fs_info *fs_info);
int load_free_space_tree(struct btrfs_caching_control *caching_ctl);
int add_block_group_free_space(struct btrfs_trans_handle *trans,
struct btrfs_block_group *block_group);
int remove_block_group_free_space(struct btrfs_trans_handle *trans,
struct btrfs_block_group *block_group);
int add_to_free_space_tree(struct btrfs_trans_handle *trans,
u64 start, u64 size);
int remove_from_free_space_tree(struct btrfs_trans_handle *trans,
u64 start, u64 size);
#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
struct btrfs_free_space_info *
search_free_space_info(struct btrfs_trans_handle *trans,
struct btrfs_block_group *block_group,
struct btrfs_path *path, int cow);
int __add_to_free_space_tree(struct btrfs_trans_handle *trans,
struct btrfs_block_group *block_group,
struct btrfs_path *path, u64 start, u64 size);
int __remove_from_free_space_tree(struct btrfs_trans_handle *trans,
struct btrfs_block_group *block_group,
struct btrfs_path *path, u64 start, u64 size);
int convert_free_space_to_bitmaps(struct btrfs_trans_handle *trans,
struct btrfs_block_group *block_group,
struct btrfs_path *path);
int convert_free_space_to_extents(struct btrfs_trans_handle *trans,
struct btrfs_block_group *block_group,
struct btrfs_path *path);
int free_space_test_bit(struct btrfs_block_group *block_group,
struct btrfs_path *path, u64 offset);
#endif
#endif