91 	struct btrfs_fs_info *fs_info = kzalloc(sizeof(struct btrfs_fs_info),  in btrfs_alloc_dummy_fs_info()  local
94 	if (!fs_info)  in btrfs_alloc_dummy_fs_info()
95 		return fs_info;  in btrfs_alloc_dummy_fs_info()
96 	fs_info->fs_devices = kzalloc(sizeof(struct btrfs_fs_devices),  in btrfs_alloc_dummy_fs_info()
98 	if (!fs_info->fs_devices) {  in btrfs_alloc_dummy_fs_info()
99 		kfree(fs_info);  in btrfs_alloc_dummy_fs_info()
102 	fs_info->super_copy = kzalloc(sizeof(struct btrfs_super_block),  in btrfs_alloc_dummy_fs_info()
104 	if (!fs_info->super_copy) {  in btrfs_alloc_dummy_fs_info()
105 		kfree(fs_info->fs_devices);  in btrfs_alloc_dummy_fs_info()
106 		kfree(fs_info);  in btrfs_alloc_dummy_fs_info()
110 	fs_info->nodesize = nodesize;  in btrfs_alloc_dummy_fs_info()
111 	fs_info->sectorsize = sectorsize;  in btrfs_alloc_dummy_fs_info()
113 	if (init_srcu_struct(&fs_info->subvol_srcu)) {  in btrfs_alloc_dummy_fs_info()
114 		kfree(fs_info->fs_devices);  in btrfs_alloc_dummy_fs_info()
115 		kfree(fs_info->super_copy);  in btrfs_alloc_dummy_fs_info()
116 		kfree(fs_info);  in btrfs_alloc_dummy_fs_info()
120 	spin_lock_init(&fs_info->buffer_lock);  in btrfs_alloc_dummy_fs_info()
121 	spin_lock_init(&fs_info->qgroup_lock);  in btrfs_alloc_dummy_fs_info()
122 	spin_lock_init(&fs_info->super_lock);  in btrfs_alloc_dummy_fs_info()
123 	spin_lock_init(&fs_info->fs_roots_radix_lock);  in btrfs_alloc_dummy_fs_info()
124 	spin_lock_init(&fs_info->tree_mod_seq_lock);  in btrfs_alloc_dummy_fs_info()
125 	mutex_init(&fs_info->qgroup_ioctl_lock);  in btrfs_alloc_dummy_fs_info()
126 	mutex_init(&fs_info->qgroup_rescan_lock);  in btrfs_alloc_dummy_fs_info()
127 	rwlock_init(&fs_info->tree_mod_log_lock);  in btrfs_alloc_dummy_fs_info()
128 	fs_info->running_transaction = NULL;  in btrfs_alloc_dummy_fs_info()
129 	fs_info->qgroup_tree = RB_ROOT;  in btrfs_alloc_dummy_fs_info()
130 	fs_info->qgroup_ulist = NULL;  in btrfs_alloc_dummy_fs_info()
131 	atomic64_set(&fs_info->tree_mod_seq, 0);  in btrfs_alloc_dummy_fs_info()
132 	INIT_LIST_HEAD(&fs_info->dirty_qgroups);  in btrfs_alloc_dummy_fs_info()
133 	INIT_LIST_HEAD(&fs_info->dead_roots);  in btrfs_alloc_dummy_fs_info()
134 	INIT_LIST_HEAD(&fs_info->tree_mod_seq_list);  in btrfs_alloc_dummy_fs_info()
135 	INIT_RADIX_TREE(&fs_info->buffer_radix, GFP_ATOMIC);  in btrfs_alloc_dummy_fs_info()
136 	INIT_RADIX_TREE(&fs_info->fs_roots_radix, GFP_ATOMIC);  in btrfs_alloc_dummy_fs_info()
137 	extent_io_tree_init(fs_info, &fs_info->freed_extents[0],  in btrfs_alloc_dummy_fs_info()
139 	extent_io_tree_init(fs_info, &fs_info->freed_extents[1],  in btrfs_alloc_dummy_fs_info()
141 	fs_info->pinned_extents = &fs_info->freed_extents[0];  in btrfs_alloc_dummy_fs_info()
142 	set_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state);  in btrfs_alloc_dummy_fs_info()
144 	test_mnt->mnt_sb->s_fs_info = fs_info;  in btrfs_alloc_dummy_fs_info()
146 	return fs_info;  in btrfs_alloc_dummy_fs_info()
149 void btrfs_free_dummy_fs_info(struct btrfs_fs_info *fs_info)  in btrfs_free_dummy_fs_info()  argument
154 	if (!fs_info)  in btrfs_free_dummy_fs_info()
158 			      &fs_info->fs_state)))  in btrfs_free_dummy_fs_info()
163 	spin_lock(&fs_info->buffer_lock);  in btrfs_free_dummy_fs_info()
164 	radix_tree_for_each_slot(slot, &fs_info->buffer_radix, &iter, 0) {  in btrfs_free_dummy_fs_info()
167 		eb = radix_tree_deref_slot_protected(slot, &fs_info->buffer_lock);  in btrfs_free_dummy_fs_info()
177 		spin_unlock(&fs_info->buffer_lock);  in btrfs_free_dummy_fs_info()
179 		spin_lock(&fs_info->buffer_lock);  in btrfs_free_dummy_fs_info()
181 	spin_unlock(&fs_info->buffer_lock);  in btrfs_free_dummy_fs_info()
183 	btrfs_free_qgroup_config(fs_info);  in btrfs_free_dummy_fs_info()
184 	btrfs_free_fs_roots(fs_info);  in btrfs_free_dummy_fs_info()
185 	cleanup_srcu_struct(&fs_info->subvol_srcu);  in btrfs_free_dummy_fs_info()
186 	kfree(fs_info->super_copy);  in btrfs_free_dummy_fs_info()
187 	kfree(fs_info->fs_devices);  in btrfs_free_dummy_fs_info()
188 	kfree(fs_info);  in btrfs_free_dummy_fs_info()
206 btrfs_alloc_dummy_block_group(struct btrfs_fs_info *fs_info,  in btrfs_alloc_dummy_block_group()  argument
224 	cache->full_stripe_len = fs_info->sectorsize;  in btrfs_alloc_dummy_block_group()
225 	cache->fs_info = fs_info;  in btrfs_alloc_dummy_block_group()
246 			    struct btrfs_fs_info *fs_info)  in btrfs_init_dummy_trans()  argument
251 	trans->fs_info = fs_info;  in btrfs_init_dummy_trans()