Blame - fs/btrfs/free-space-tree.h - hafnium/third_party/linux

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Andrew Scull	b4b6d4a	2019-01-02 15:54:55 +0000	[diff] [blame]	1	/* SPDX-License-Identifier: GPL-2.0 */
				2	/*
				3	* Copyright (C) 2015 Facebook. All rights reserved.
				4	*/
				5
				6	#ifndef BTRFS_FREE_SPACE_TREE_H
				7	#define BTRFS_FREE_SPACE_TREE_H
				8
David Brazdil	0f672f6	2019-12-10 10:32:29 +0000	[diff] [blame]	9	struct btrfs_caching_control;
				10
Andrew Scull	b4b6d4a	2019-01-02 15:54:55 +0000	[diff] [blame]	11	/*
				12	* The default size for new free space bitmap items. The last bitmap in a block
				13	* group may be truncated, and none of the free space tree code assumes that
				14	* existing bitmaps are this size.
				15	*/
				16	#define BTRFS_FREE_SPACE_BITMAP_SIZE 256
				17	#define BTRFS_FREE_SPACE_BITMAP_BITS (BTRFS_FREE_SPACE_BITMAP_SIZE * BITS_PER_BYTE)
				18
Olivier Deprez	157378f	2022-04-04 15:47:50 +0200	[diff] [blame^]	19	void set_free_space_tree_thresholds(struct btrfs_block_group *block_group);
Andrew Scull	b4b6d4a	2019-01-02 15:54:55 +0000	[diff] [blame]	20	int btrfs_create_free_space_tree(struct btrfs_fs_info *fs_info);
				21	int btrfs_clear_free_space_tree(struct btrfs_fs_info *fs_info);
				22	int load_free_space_tree(struct btrfs_caching_control *caching_ctl);
				23	int add_block_group_free_space(struct btrfs_trans_handle *trans,
Olivier Deprez	157378f	2022-04-04 15:47:50 +0200	[diff] [blame^]	24	struct btrfs_block_group *block_group);
Andrew Scull	b4b6d4a	2019-01-02 15:54:55 +0000	[diff] [blame]	25	int remove_block_group_free_space(struct btrfs_trans_handle *trans,
Olivier Deprez	157378f	2022-04-04 15:47:50 +0200	[diff] [blame^]	26	struct btrfs_block_group *block_group);
Andrew Scull	b4b6d4a	2019-01-02 15:54:55 +0000	[diff] [blame]	27	int add_to_free_space_tree(struct btrfs_trans_handle *trans,
				28	u64 start, u64 size);
				29	int remove_from_free_space_tree(struct btrfs_trans_handle *trans,
				30	u64 start, u64 size);
				31
				32	#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
				33	struct btrfs_free_space_info *
				34	search_free_space_info(struct btrfs_trans_handle *trans,
Olivier Deprez	157378f	2022-04-04 15:47:50 +0200	[diff] [blame^]	35	struct btrfs_block_group *block_group,
Andrew Scull	b4b6d4a	2019-01-02 15:54:55 +0000	[diff] [blame]	36	struct btrfs_path *path, int cow);
				37	int __add_to_free_space_tree(struct btrfs_trans_handle *trans,
Olivier Deprez	157378f	2022-04-04 15:47:50 +0200	[diff] [blame^]	38	struct btrfs_block_group *block_group,
Andrew Scull	b4b6d4a	2019-01-02 15:54:55 +0000	[diff] [blame]	39	struct btrfs_path *path, u64 start, u64 size);
				40	int __remove_from_free_space_tree(struct btrfs_trans_handle *trans,
Olivier Deprez	157378f	2022-04-04 15:47:50 +0200	[diff] [blame^]	41	struct btrfs_block_group *block_group,
Andrew Scull	b4b6d4a	2019-01-02 15:54:55 +0000	[diff] [blame]	42	struct btrfs_path *path, u64 start, u64 size);
				43	int convert_free_space_to_bitmaps(struct btrfs_trans_handle *trans,
Olivier Deprez	157378f	2022-04-04 15:47:50 +0200	[diff] [blame^]	44	struct btrfs_block_group *block_group,
Andrew Scull	b4b6d4a	2019-01-02 15:54:55 +0000	[diff] [blame]	45	struct btrfs_path *path);
				46	int convert_free_space_to_extents(struct btrfs_trans_handle *trans,
Olivier Deprez	157378f	2022-04-04 15:47:50 +0200	[diff] [blame^]	47	struct btrfs_block_group *block_group,
Andrew Scull	b4b6d4a	2019-01-02 15:54:55 +0000	[diff] [blame]	48	struct btrfs_path *path);
Olivier Deprez	157378f	2022-04-04 15:47:50 +0200	[diff] [blame^]	49	int free_space_test_bit(struct btrfs_block_group *block_group,
Andrew Scull	b4b6d4a	2019-01-02 15:54:55 +0000	[diff] [blame]	50	struct btrfs_path *path, u64 offset);
				51	#endif
				52
				53	#endif