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53 lines
2.1 KiB
53 lines
2.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright (C) 2015 Facebook. All rights reserved. |
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*/ |
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#ifndef BTRFS_FREE_SPACE_TREE_H |
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#define BTRFS_FREE_SPACE_TREE_H |
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struct btrfs_caching_control; |
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/* |
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* The default size for new free space bitmap items. The last bitmap in a block |
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* group may be truncated, and none of the free space tree code assumes that |
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* existing bitmaps are this size. |
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*/ |
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#define BTRFS_FREE_SPACE_BITMAP_SIZE 256 |
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#define BTRFS_FREE_SPACE_BITMAP_BITS (BTRFS_FREE_SPACE_BITMAP_SIZE * BITS_PER_BYTE) |
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void set_free_space_tree_thresholds(struct btrfs_block_group *block_group); |
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int btrfs_create_free_space_tree(struct btrfs_fs_info *fs_info); |
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int btrfs_clear_free_space_tree(struct btrfs_fs_info *fs_info); |
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int load_free_space_tree(struct btrfs_caching_control *caching_ctl); |
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int add_block_group_free_space(struct btrfs_trans_handle *trans, |
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struct btrfs_block_group *block_group); |
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int remove_block_group_free_space(struct btrfs_trans_handle *trans, |
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struct btrfs_block_group *block_group); |
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int add_to_free_space_tree(struct btrfs_trans_handle *trans, |
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u64 start, u64 size); |
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int remove_from_free_space_tree(struct btrfs_trans_handle *trans, |
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u64 start, u64 size); |
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#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
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struct btrfs_free_space_info * |
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search_free_space_info(struct btrfs_trans_handle *trans, |
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struct btrfs_block_group *block_group, |
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struct btrfs_path *path, int cow); |
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int __add_to_free_space_tree(struct btrfs_trans_handle *trans, |
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struct btrfs_block_group *block_group, |
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struct btrfs_path *path, u64 start, u64 size); |
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int __remove_from_free_space_tree(struct btrfs_trans_handle *trans, |
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struct btrfs_block_group *block_group, |
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struct btrfs_path *path, u64 start, u64 size); |
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int convert_free_space_to_bitmaps(struct btrfs_trans_handle *trans, |
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struct btrfs_block_group *block_group, |
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struct btrfs_path *path); |
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int convert_free_space_to_extents(struct btrfs_trans_handle *trans, |
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struct btrfs_block_group *block_group, |
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struct btrfs_path *path); |
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int free_space_test_bit(struct btrfs_block_group *block_group, |
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struct btrfs_path *path, u64 offset); |
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#endif |
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#endif
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