blob: e49ca5c321b571e5886c557e76d131441f1acc87 [file] [log] [blame]
Chris Masonfa9c0d72009-04-03 09:47:43 -04001/*
2 * Copyright (C) 2009 Oracle. All rights reserved.
3 *
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.
7 *
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.
12 *
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.
17 */
18
19#ifndef __BTRFS_FREE_SPACE_CACHE
20#define __BTRFS_FREE_SPACE_CACHE
21
Josef Bacik96303082009-07-13 21:29:25 -040022struct btrfs_free_space {
23 struct rb_node offset_index;
24 u64 offset;
25 u64 bytes;
26 unsigned long *bitmap;
27 struct list_head list;
28};
29
Josef Bacik0af3d002010-06-21 14:48:16 -040030struct inode *lookup_free_space_inode(struct btrfs_root *root,
31 struct btrfs_block_group_cache
32 *block_group, struct btrfs_path *path);
33int create_free_space_inode(struct btrfs_root *root,
34 struct btrfs_trans_handle *trans,
35 struct btrfs_block_group_cache *block_group,
36 struct btrfs_path *path);
Josef Bacik0cb59c92010-07-02 12:14:14 -040037
Josef Bacik0af3d002010-06-21 14:48:16 -040038int btrfs_truncate_free_space_cache(struct btrfs_root *root,
39 struct btrfs_trans_handle *trans,
40 struct btrfs_path *path,
41 struct inode *inode);
Josef Bacik9d66e232010-08-25 16:54:15 -040042int load_free_space_cache(struct btrfs_fs_info *fs_info,
43 struct btrfs_block_group_cache *block_group);
Josef Bacik0cb59c92010-07-02 12:14:14 -040044int btrfs_write_out_cache(struct btrfs_root *root,
45 struct btrfs_trans_handle *trans,
46 struct btrfs_block_group_cache *block_group,
47 struct btrfs_path *path);
Chris Masonfa9c0d72009-04-03 09:47:43 -040048int btrfs_add_free_space(struct btrfs_block_group_cache *block_group,
49 u64 bytenr, u64 size);
50int btrfs_remove_free_space(struct btrfs_block_group_cache *block_group,
51 u64 bytenr, u64 size);
52void btrfs_remove_free_space_cache(struct btrfs_block_group_cache
53 *block_group);
54u64 btrfs_find_space_for_alloc(struct btrfs_block_group_cache *block_group,
55 u64 offset, u64 bytes, u64 empty_size);
56void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group,
57 u64 bytes);
58u64 btrfs_block_group_free_space(struct btrfs_block_group_cache *block_group);
59int btrfs_find_space_cluster(struct btrfs_trans_handle *trans,
Chris Mason451d7582009-06-09 20:28:34 -040060 struct btrfs_root *root,
Chris Masonfa9c0d72009-04-03 09:47:43 -040061 struct btrfs_block_group_cache *block_group,
62 struct btrfs_free_cluster *cluster,
63 u64 offset, u64 bytes, u64 empty_size);
64void btrfs_init_free_cluster(struct btrfs_free_cluster *cluster);
65u64 btrfs_alloc_from_cluster(struct btrfs_block_group_cache *block_group,
66 struct btrfs_free_cluster *cluster, u64 bytes,
67 u64 min_start);
68int btrfs_return_cluster_to_free_space(
69 struct btrfs_block_group_cache *block_group,
70 struct btrfs_free_cluster *cluster);
71#endif