2 * Copyright (C) 2013 FUJITSU LIMITED. All rights reserved.
3 * Written by Miao Xie <miaox@cn.fujitsu.com>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public
7 * License v2 as published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public
15 * License along with this program; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 021110-1307, USA.
20 #ifndef __BTRFS_CHECK_H__
21 #define __BTRFS_CHECK_H__
23 #if BTRFS_FLAT_INCLUDES
24 #include "kerncompat.h"
26 #include "extent-cache.h"
29 #include <btrfs/kerncompat.h>
30 #include <btrfs/ctree.h>
31 #include <btrfs/extent-cache.h>
32 #include <btrfs/list.h>
33 #endif /* BTRFS_FLAT_INCLUDES */
35 struct block_group_record {
36 struct cache_extent cache;
37 /* Used to identify the orphan block groups */
38 struct list_head list;
49 struct block_group_tree {
50 struct cache_tree tree;
51 struct list_head block_groups;
54 struct device_record {
73 u8 dev_uuid[BTRFS_UUID_SIZE];
77 struct cache_extent cache;
79 struct list_head list;
80 struct list_head dextents;
81 struct block_group_record *bg_rec;
98 struct stripe stripes[0];
101 struct device_extent_record {
102 struct cache_extent cache;
104 * Used to identify the orphan device extents (the device extents
105 * don't belong to a chunk or a device)
107 struct list_head chunk_list;
108 struct list_head device_list;
121 struct device_extent_tree {
122 struct cache_tree tree;
125 * When checking the chunk information, we move the device extents
126 * that has its chunk to the chunk's device extents list. After the
127 * check, if there are still some device extents in no_chunk_orphans,
128 * it means there are some device extents which don't belong to any
131 * The usage of no_device_orphans is the same as the first one, but it
132 * is for the device information check.
134 struct list_head no_chunk_orphans;
135 struct list_head no_device_orphans;
138 static inline unsigned long btrfs_chunk_record_size(int num_stripes)
140 return sizeof(struct chunk_record) +
141 sizeof(struct stripe) * num_stripes;
143 void free_chunk_cache_tree(struct cache_tree *chunk_cache);
145 u64 calc_stripe_length(u64 type, u64 length, int num_stripes);
146 /* For block group tree */
147 static inline void block_group_tree_init(struct block_group_tree *tree)
149 cache_tree_init(&tree->tree);
150 INIT_LIST_HEAD(&tree->block_groups);
153 int insert_block_group_record(struct block_group_tree *tree,
154 struct block_group_record *bg_rec);
155 void free_block_group_tree(struct block_group_tree *tree);
157 /* For device extent tree */
158 static inline void device_extent_tree_init(struct device_extent_tree *tree)
160 cache_tree_init(&tree->tree);
161 INIT_LIST_HEAD(&tree->no_chunk_orphans);
162 INIT_LIST_HEAD(&tree->no_device_orphans);
165 int insert_device_extent_record(struct device_extent_tree *tree,
166 struct device_extent_record *de_rec);
167 void free_device_extent_tree(struct device_extent_tree *tree);
170 /* Create various in-memory record by on-disk data */
171 struct chunk_record *btrfs_new_chunk_record(struct extent_buffer *leaf,
172 struct btrfs_key *key,
174 struct block_group_record *
175 btrfs_new_block_group_record(struct extent_buffer *leaf, struct btrfs_key *key,
177 struct device_extent_record *
178 btrfs_new_device_extent_record(struct extent_buffer *leaf,
179 struct btrfs_key *key, int slot);
181 int check_chunks(struct cache_tree *chunk_cache,
182 struct block_group_tree *block_group_cache,
183 struct device_extent_tree *dev_extent_cache,
184 struct list_head *good, struct list_head *bad,
185 struct list_head *rebuild, int silent);