git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| fa9c0d79 CM |
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 | ||
| 96303081 JB |
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 | ||
| 0af3d00b JB |
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); | |
| 0cb59c99 | 37 | |
| 0af3d00b JB |
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); | |
| 9d66e233 JB |
42 | int load_free_space_cache(struct btrfs_fs_info *fs_info, |
| 43 | struct btrfs_block_group_cache *block_group); | |
| 0cb59c99 JB |
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); | |
| fa9c0d79 CM |
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, | |
| 451d7585 | 60 | struct btrfs_root *root, |
| fa9c0d79 CM |
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 |