2 * Copyright (C) 2009 Oracle. All rights reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
19 #ifndef __BTRFS_FREE_SPACE_CACHE
20 #define __BTRFS_FREE_SPACE_CACHE
22 int btrfs_add_free_space(struct btrfs_block_group_cache *block_group,
23 u64 bytenr, u64 size);
24 int btrfs_remove_free_space(struct btrfs_block_group_cache *block_group,
25 u64 bytenr, u64 size);
26 void btrfs_remove_free_space_cache(struct btrfs_block_group_cache
28 u64 btrfs_find_space_for_alloc(struct btrfs_block_group_cache *block_group,
29 u64 offset, u64 bytes, u64 empty_size);
30 void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group,
32 u64 btrfs_block_group_free_space(struct btrfs_block_group_cache *block_group);
33 int btrfs_find_space_cluster(struct btrfs_trans_handle *trans,
34 struct btrfs_root *root,
35 struct btrfs_block_group_cache *block_group,
36 struct btrfs_free_cluster *cluster,
37 u64 offset, u64 bytes, u64 empty_size);
38 void btrfs_init_free_cluster(struct btrfs_free_cluster *cluster);
39 u64 btrfs_alloc_from_cluster(struct btrfs_block_group_cache *block_group,
40 struct btrfs_free_cluster *cluster, u64 bytes,
42 int btrfs_return_cluster_to_free_space(
43 struct btrfs_block_group_cache *block_group,
44 struct btrfs_free_cluster *cluster);