| Chris Mason | fa9c0d7 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 1 | /* |
| 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 Bacik | 9630308 | 2009-07-13 21:29:25 -0400 | [diff] [blame] | 22 | struct 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 Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 30 | struct inode *lookup_free_space_inode(struct btrfs_root *root, |
| 31 | struct btrfs_block_group_cache |
| 32 | *block_group, struct btrfs_path *path); |
| 33 | int 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 Bacik | 0cb59c9 | 2010-07-02 12:14:14 -0400 | [diff] [blame] | 37 | |
| Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 38 | int 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 Bacik | 9d66e23 | 2010-08-25 16:54:15 -0400 | [diff] [blame] | 42 | int load_free_space_cache(struct btrfs_fs_info *fs_info, |
| 43 | struct btrfs_block_group_cache *block_group); |
| Josef Bacik | 0cb59c9 | 2010-07-02 12:14:14 -0400 | [diff] [blame] | 44 | int 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 Mason | fa9c0d7 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 48 | int btrfs_add_free_space(struct btrfs_block_group_cache *block_group, |
| 49 | u64 bytenr, u64 size); |
| 50 | int btrfs_remove_free_space(struct btrfs_block_group_cache *block_group, |
| 51 | u64 bytenr, u64 size); |
| 52 | void btrfs_remove_free_space_cache(struct btrfs_block_group_cache |
| 53 | *block_group); |
| 54 | u64 btrfs_find_space_for_alloc(struct btrfs_block_group_cache *block_group, |
| 55 | u64 offset, u64 bytes, u64 empty_size); |
| 56 | void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group, |
| 57 | u64 bytes); |
| 58 | u64 btrfs_block_group_free_space(struct btrfs_block_group_cache *block_group); |
| 59 | int btrfs_find_space_cluster(struct btrfs_trans_handle *trans, |
| Chris Mason | 451d758 | 2009-06-09 20:28:34 -0400 | [diff] [blame] | 60 | struct btrfs_root *root, |
| Chris Mason | fa9c0d7 | 2009-04-03 09:47:43 -0400 | [diff] [blame] | 61 | struct btrfs_block_group_cache *block_group, |
| 62 | struct btrfs_free_cluster *cluster, |
| 63 | u64 offset, u64 bytes, u64 empty_size); |
| 64 | void btrfs_init_free_cluster(struct btrfs_free_cluster *cluster); |
| 65 | u64 btrfs_alloc_from_cluster(struct btrfs_block_group_cache *block_group, |
| 66 | struct btrfs_free_cluster *cluster, u64 bytes, |
| 67 | u64 min_start); |
| 68 | int btrfs_return_cluster_to_free_space( |
| 69 | struct btrfs_block_group_cache *block_group, |
| 70 | struct btrfs_free_cluster *cluster); |
| 71 | #endif |