54 static void btrfs_destroy_ordered_extents(struct btrfs_root *root);
57 static void btrfs_destroy_delalloc_inodes(struct btrfs_root *root);
208 	struct btrfs_fs_info *fs_info = inode->root->fs_info;  in btree_get_extent()
596 	struct btrfs_root *root = BTRFS_I(page->mapping->host)->root;  in btree_readpage_end_io_hook()  local
597 	struct btrfs_fs_info *fs_info = root->fs_info;  in btree_readpage_end_io_hook()
855 	struct btrfs_root *root;  in btree_csum_one_bio()  local
861 		root = BTRFS_I(bvec->bv_page->mapping->host)->root;  in btree_csum_one_bio()
862 		ret = csum_dirty_buffer(root->fs_info, bvec->bv_page);  in btree_csum_one_bio()
966 		fs_info = BTRFS_I(mapping->host)->root->fs_info;  in btree_writepages()
1000 		btrfs_warn(BTRFS_I(page->mapping->host)->root->fs_info,  in btree_invalidatepage()
1133 static void __setup_root(struct btrfs_root *root, struct btrfs_fs_info *fs_info,  in __setup_root()  argument
1137 	root->node = NULL;  in __setup_root()
1138 	root->commit_root = NULL;  in __setup_root()
1139 	root->state = 0;  in __setup_root()
1140 	root->orphan_cleanup_state = 0;  in __setup_root()
1142 	root->last_trans = 0;  in __setup_root()
1143 	root->highest_objectid = 0;  in __setup_root()
1144 	root->nr_delalloc_inodes = 0;  in __setup_root()
1145 	root->nr_ordered_extents = 0;  in __setup_root()
1146 	root->inode_tree = RB_ROOT;  in __setup_root()
1147 	INIT_RADIX_TREE(&root->delayed_nodes_tree, GFP_ATOMIC);  in __setup_root()
1148 	root->block_rsv = NULL;  in __setup_root()
1150 	INIT_LIST_HEAD(&root->dirty_list);  in __setup_root()
1151 	INIT_LIST_HEAD(&root->root_list);  in __setup_root()
1152 	INIT_LIST_HEAD(&root->delalloc_inodes);  in __setup_root()
1153 	INIT_LIST_HEAD(&root->delalloc_root);  in __setup_root()
1154 	INIT_LIST_HEAD(&root->ordered_extents);  in __setup_root()
1155 	INIT_LIST_HEAD(&root->ordered_root);  in __setup_root()
1156 	INIT_LIST_HEAD(&root->reloc_dirty_list);  in __setup_root()
1157 	INIT_LIST_HEAD(&root->logged_list[0]);  in __setup_root()
1158 	INIT_LIST_HEAD(&root->logged_list[1]);  in __setup_root()
1159 	spin_lock_init(&root->inode_lock);  in __setup_root()
1160 	spin_lock_init(&root->delalloc_lock);  in __setup_root()
1161 	spin_lock_init(&root->ordered_extent_lock);  in __setup_root()
1162 	spin_lock_init(&root->accounting_lock);  in __setup_root()
1163 	spin_lock_init(&root->log_extents_lock[0]);  in __setup_root()
1164 	spin_lock_init(&root->log_extents_lock[1]);  in __setup_root()
1165 	spin_lock_init(&root->qgroup_meta_rsv_lock);  in __setup_root()
1166 	mutex_init(&root->objectid_mutex);  in __setup_root()
1167 	mutex_init(&root->log_mutex);  in __setup_root()
1168 	mutex_init(&root->ordered_extent_mutex);  in __setup_root()
1169 	mutex_init(&root->delalloc_mutex);  in __setup_root()
1170 	init_waitqueue_head(&root->log_writer_wait);  in __setup_root()
1171 	init_waitqueue_head(&root->log_commit_wait[0]);  in __setup_root()
1172 	init_waitqueue_head(&root->log_commit_wait[1]);  in __setup_root()
1173 	INIT_LIST_HEAD(&root->log_ctxs[0]);  in __setup_root()
1174 	INIT_LIST_HEAD(&root->log_ctxs[1]);  in __setup_root()
1175 	atomic_set(&root->log_commit[0], 0);  in __setup_root()
1176 	atomic_set(&root->log_commit[1], 0);  in __setup_root()
1177 	atomic_set(&root->log_writers, 0);  in __setup_root()
1178 	atomic_set(&root->log_batch, 0);  in __setup_root()
1179 	refcount_set(&root->refs, 1);  in __setup_root()
1180 	atomic_set(&root->will_be_snapshotted, 0);  in __setup_root()
1181 	atomic_set(&root->snapshot_force_cow, 0);  in __setup_root()
1182 	atomic_set(&root->nr_swapfiles, 0);  in __setup_root()
1183 	root->log_transid = 0;  in __setup_root()
1184 	root->log_transid_committed = -1;  in __setup_root()
1185 	root->last_log_commit = 0;  in __setup_root()
1187 		extent_io_tree_init(fs_info, &root->dirty_log_pages,  in __setup_root()
1190 	memset(&root->root_key, 0, sizeof(root->root_key));  in __setup_root()
1191 	memset(&root->root_item, 0, sizeof(root->root_item));  in __setup_root()
1192 	memset(&root->defrag_progress, 0, sizeof(root->defrag_progress));  in __setup_root()
1194 		root->defrag_trans_start = fs_info->generation;  in __setup_root()
1196 		root->defrag_trans_start = 0;  in __setup_root()
1197 	root->root_key.objectid = objectid;  in __setup_root()
1198 	root->anon_dev = 0;  in __setup_root()
1200 	spin_lock_init(&root->root_item_lock);  in __setup_root()
1201 	btrfs_qgroup_init_swapped_blocks(&root->swapped_blocks);  in __setup_root()
1207 	struct btrfs_root *root = kzalloc(sizeof(*root), flags);  in btrfs_alloc_root()  local
1208 	if (root)  in btrfs_alloc_root()
1209 		root->fs_info = fs_info;  in btrfs_alloc_root()
1210 	return root;  in btrfs_alloc_root()
1217 	struct btrfs_root *root;  in btrfs_alloc_dummy_root()  local
1222 	root = btrfs_alloc_root(fs_info, GFP_KERNEL);  in btrfs_alloc_dummy_root()
1223 	if (!root)  in btrfs_alloc_dummy_root()
1227 	__setup_root(root, fs_info, BTRFS_ROOT_TREE_OBJECTID);  in btrfs_alloc_dummy_root()
1228 	root->alloc_bytenr = 0;  in btrfs_alloc_dummy_root()
1230 	return root;  in btrfs_alloc_dummy_root()
1240 	struct btrfs_root *root;  in btrfs_create_tree()  local
1251 	root = btrfs_alloc_root(fs_info, GFP_KERNEL);  in btrfs_create_tree()
1253 	if (!root)  in btrfs_create_tree()
1256 	__setup_root(root, fs_info, objectid);  in btrfs_create_tree()
1257 	root->root_key.objectid = objectid;  in btrfs_create_tree()
1258 	root->root_key.type = BTRFS_ROOT_ITEM_KEY;  in btrfs_create_tree()
1259 	root->root_key.offset = 0;  in btrfs_create_tree()
1261 	leaf = btrfs_alloc_tree_block(trans, root, 0, objectid, NULL, 0, 0, 0);  in btrfs_create_tree()
1268 	root->node = leaf;  in btrfs_create_tree()
1271 	root->commit_root = btrfs_root_node(root);  in btrfs_create_tree()
1272 	set_bit(BTRFS_ROOT_TRACK_DIRTY, &root->state);  in btrfs_create_tree()
1274 	root->root_item.flags = 0;  in btrfs_create_tree()
1275 	root->root_item.byte_limit = 0;  in btrfs_create_tree()
1276 	btrfs_set_root_bytenr(&root->root_item, leaf->start);  in btrfs_create_tree()
1277 	btrfs_set_root_generation(&root->root_item, trans->transid);  in btrfs_create_tree()
1278 	btrfs_set_root_level(&root->root_item, 0);  in btrfs_create_tree()
1279 	btrfs_set_root_refs(&root->root_item, 1);  in btrfs_create_tree()
1280 	btrfs_set_root_used(&root->root_item, leaf->len);  in btrfs_create_tree()
1281 	btrfs_set_root_last_snapshot(&root->root_item, 0);  in btrfs_create_tree()
1282 	btrfs_set_root_dirid(&root->root_item, 0);  in btrfs_create_tree()
1285 	memcpy(root->root_item.uuid, uuid.b, BTRFS_UUID_SIZE);  in btrfs_create_tree()
1286 	root->root_item.drop_level = 0;  in btrfs_create_tree()
1291 	ret = btrfs_insert_root(trans, tree_root, &key, &root->root_item);  in btrfs_create_tree()
1297 	return root;  in btrfs_create_tree()
1302 		free_extent_buffer(root->commit_root);  in btrfs_create_tree()
1305 	kfree(root);  in btrfs_create_tree()
1313 	struct btrfs_root *root;  in alloc_log_tree()  local
1316 	root = btrfs_alloc_root(fs_info, GFP_NOFS);  in alloc_log_tree()
1317 	if (!root)  in alloc_log_tree()
1320 	__setup_root(root, fs_info, BTRFS_TREE_LOG_OBJECTID);  in alloc_log_tree()
1322 	root->root_key.objectid = BTRFS_TREE_LOG_OBJECTID;  in alloc_log_tree()
1323 	root->root_key.type = BTRFS_ROOT_ITEM_KEY;  in alloc_log_tree()
1324 	root->root_key.offset = BTRFS_TREE_LOG_OBJECTID;  in alloc_log_tree()
1335 	leaf = btrfs_alloc_tree_block(trans, root, 0, BTRFS_TREE_LOG_OBJECTID,  in alloc_log_tree()
1338 		kfree(root);  in alloc_log_tree()
1342 	root->node = leaf;  in alloc_log_tree()
1344 	btrfs_mark_buffer_dirty(root->node);  in alloc_log_tree()
1345 	btrfs_tree_unlock(root->node);  in alloc_log_tree()
1346 	return root;  in alloc_log_tree()
1363 		       struct btrfs_root *root)  in btrfs_add_log_tree()  argument
1365 	struct btrfs_fs_info *fs_info = root->fs_info;  in btrfs_add_log_tree()
1374 	log_root->root_key.offset = root->root_key.objectid;  in btrfs_add_log_tree()
1386 	WARN_ON(root->log_root);  in btrfs_add_log_tree()
1387 	root->log_root = log_root;  in btrfs_add_log_tree()
1388 	root->log_transid = 0;  in btrfs_add_log_tree()
1389 	root->log_transid_committed = -1;  in btrfs_add_log_tree()
1390 	root->last_log_commit = 0;  in btrfs_add_log_tree()
1397 	struct btrfs_root *root;  in btrfs_read_tree_root()  local
1408 	root = btrfs_alloc_root(fs_info, GFP_NOFS);  in btrfs_read_tree_root()
1409 	if (!root) {  in btrfs_read_tree_root()
1414 	__setup_root(root, fs_info, key->objectid);  in btrfs_read_tree_root()
1417 			      &root->root_item, &root->root_key);  in btrfs_read_tree_root()
1424 	generation = btrfs_root_generation(&root->root_item);  in btrfs_read_tree_root()
1425 	level = btrfs_root_level(&root->root_item);  in btrfs_read_tree_root()
1426 	root->node = read_tree_block(fs_info,  in btrfs_read_tree_root()
1427 				     btrfs_root_bytenr(&root->root_item),  in btrfs_read_tree_root()
1429 	if (IS_ERR(root->node)) {  in btrfs_read_tree_root()
1430 		ret = PTR_ERR(root->node);  in btrfs_read_tree_root()
1432 	} else if (!btrfs_buffer_uptodate(root->node, generation, 0)) {  in btrfs_read_tree_root()
1434 		free_extent_buffer(root->node);  in btrfs_read_tree_root()
1437 	root->commit_root = btrfs_root_node(root);  in btrfs_read_tree_root()
1440 	return root;  in btrfs_read_tree_root()
1443 	kfree(root);  in btrfs_read_tree_root()
1445 	root = ERR_PTR(ret);  in btrfs_read_tree_root()
1452 	struct btrfs_root *root;  in btrfs_read_fs_root()  local
1454 	root = btrfs_read_tree_root(tree_root, location);  in btrfs_read_fs_root()
1455 	if (IS_ERR(root))  in btrfs_read_fs_root()
1456 		return root;  in btrfs_read_fs_root()
1458 	if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID) {  in btrfs_read_fs_root()
1459 		set_bit(BTRFS_ROOT_REF_COWS, &root->state);  in btrfs_read_fs_root()
1460 		btrfs_check_and_init_root_item(&root->root_item);  in btrfs_read_fs_root()
1463 	return root;  in btrfs_read_fs_root()
1466 int btrfs_init_fs_root(struct btrfs_root *root)  in btrfs_init_fs_root()  argument
1471 	root->free_ino_ctl = kzalloc(sizeof(*root->free_ino_ctl), GFP_NOFS);  in btrfs_init_fs_root()
1472 	root->free_ino_pinned = kzalloc(sizeof(*root->free_ino_pinned),  in btrfs_init_fs_root()
1474 	if (!root->free_ino_pinned || !root->free_ino_ctl) {  in btrfs_init_fs_root()
1484 	root->subv_writers = writers;  in btrfs_init_fs_root()
1486 	btrfs_init_free_ino_ctl(root);  in btrfs_init_fs_root()
1487 	spin_lock_init(&root->ino_cache_lock);  in btrfs_init_fs_root()
1488 	init_waitqueue_head(&root->ino_cache_wait);  in btrfs_init_fs_root()
1490 	ret = get_anon_bdev(&root->anon_dev);  in btrfs_init_fs_root()
1494 	mutex_lock(&root->objectid_mutex);  in btrfs_init_fs_root()
1495 	ret = btrfs_find_highest_objectid(root,  in btrfs_init_fs_root()
1496 					&root->highest_objectid);  in btrfs_init_fs_root()
1498 		mutex_unlock(&root->objectid_mutex);  in btrfs_init_fs_root()
1502 	ASSERT(root->highest_objectid <= BTRFS_LAST_FREE_OBJECTID);  in btrfs_init_fs_root()
1504 	mutex_unlock(&root->objectid_mutex);  in btrfs_init_fs_root()
1515 	struct btrfs_root *root;  in btrfs_lookup_fs_root()  local
1518 	root = radix_tree_lookup(&fs_info->fs_roots_radix,  in btrfs_lookup_fs_root()
1521 	return root;  in btrfs_lookup_fs_root()
1525 			 struct btrfs_root *root)  in btrfs_insert_fs_root()  argument
1535 				(unsigned long)root->root_key.objectid,  in btrfs_insert_fs_root()
1536 				root);  in btrfs_insert_fs_root()
1538 		set_bit(BTRFS_ROOT_IN_RADIX, &root->state);  in btrfs_insert_fs_root()
1549 	struct btrfs_root *root;  in btrfs_get_fs_root()  local
1574 	root = btrfs_lookup_fs_root(fs_info, location->objectid);  in btrfs_get_fs_root()
1575 	if (root) {  in btrfs_get_fs_root()
1576 		if (check_ref && btrfs_root_refs(&root->root_item) == 0)  in btrfs_get_fs_root()
1578 		return root;  in btrfs_get_fs_root()
1581 	root = btrfs_read_fs_root(fs_info->tree_root, location);  in btrfs_get_fs_root()
1582 	if (IS_ERR(root))  in btrfs_get_fs_root()
1583 		return root;  in btrfs_get_fs_root()
1585 	if (check_ref && btrfs_root_refs(&root->root_item) == 0) {  in btrfs_get_fs_root()
1590 	ret = btrfs_init_fs_root(root);  in btrfs_get_fs_root()
1608 		set_bit(BTRFS_ROOT_ORPHAN_ITEM_INSERTED, &root->state);  in btrfs_get_fs_root()
1610 	ret = btrfs_insert_fs_root(fs_info, root);  in btrfs_get_fs_root()
1613 			btrfs_free_fs_root(root);  in btrfs_get_fs_root()
1618 	return root;  in btrfs_get_fs_root()
1620 	btrfs_free_fs_root(root);  in btrfs_get_fs_root()
1666 	struct btrfs_root *root = arg;  in cleaner_kthread()  local
1667 	struct btrfs_fs_info *fs_info = root->fs_info;  in cleaner_kthread()
1700 		again = btrfs_clean_one_deleted_snapshot(root);  in cleaner_kthread()
1734 	struct btrfs_root *root = arg;  in transaction_kthread()  local
1735 	struct btrfs_fs_info *fs_info = root->fs_info;  in transaction_kthread()
1768 		trans = btrfs_attach_transaction(root);  in transaction_kthread()
2020 static void free_root_extent_buffers(struct btrfs_root *root)  in free_root_extent_buffers()  argument
2022 	if (root) {  in free_root_extent_buffers()
2023 		free_extent_buffer(root->node);  in free_root_extent_buffers()
2024 		free_extent_buffer(root->commit_root);  in free_root_extent_buffers()
2025 		root->node = NULL;  in free_root_extent_buffers()
2026 		root->commit_root = NULL;  in free_root_extent_buffers()
2124 	BTRFS_I(inode)->root = fs_info->tree_root;  in btrfs_init_btree_inode()
2312 	struct btrfs_root *root;  in btrfs_read_roots()  local
2322 	root = btrfs_read_tree_root(tree_root, &location);  in btrfs_read_roots()
2323 	if (IS_ERR(root)) {  in btrfs_read_roots()
2324 		ret = PTR_ERR(root);  in btrfs_read_roots()
2327 	set_bit(BTRFS_ROOT_TRACK_DIRTY, &root->state);  in btrfs_read_roots()
2328 	fs_info->extent_root = root;  in btrfs_read_roots()
2331 	root = btrfs_read_tree_root(tree_root, &location);  in btrfs_read_roots()
2332 	if (IS_ERR(root)) {  in btrfs_read_roots()
2333 		ret = PTR_ERR(root);  in btrfs_read_roots()
2336 	set_bit(BTRFS_ROOT_TRACK_DIRTY, &root->state);  in btrfs_read_roots()
2337 	fs_info->dev_root = root;  in btrfs_read_roots()
2341 	root = btrfs_read_tree_root(tree_root, &location);  in btrfs_read_roots()
2342 	if (IS_ERR(root)) {  in btrfs_read_roots()
2343 		ret = PTR_ERR(root);  in btrfs_read_roots()
2346 	set_bit(BTRFS_ROOT_TRACK_DIRTY, &root->state);  in btrfs_read_roots()
2347 	fs_info->csum_root = root;  in btrfs_read_roots()
2350 	root = btrfs_read_tree_root(tree_root, &location);  in btrfs_read_roots()
2351 	if (!IS_ERR(root)) {  in btrfs_read_roots()
2352 		set_bit(BTRFS_ROOT_TRACK_DIRTY, &root->state);  in btrfs_read_roots()
2354 		fs_info->quota_root = root;  in btrfs_read_roots()
2358 	root = btrfs_read_tree_root(tree_root, &location);  in btrfs_read_roots()
2359 	if (IS_ERR(root)) {  in btrfs_read_roots()
2360 		ret = PTR_ERR(root);  in btrfs_read_roots()
2364 		set_bit(BTRFS_ROOT_TRACK_DIRTY, &root->state);  in btrfs_read_roots()
2365 		fs_info->uuid_root = root;  in btrfs_read_roots()
2370 		root = btrfs_read_tree_root(tree_root, &location);  in btrfs_read_roots()
2371 		if (IS_ERR(root)) {  in btrfs_read_roots()
2372 			ret = PTR_ERR(root);  in btrfs_read_roots()
2375 		set_bit(BTRFS_ROOT_TRACK_DIRTY, &root->state);  in btrfs_read_roots()
2376 		fs_info->free_space_root = root;  in btrfs_read_roots()
3864 				  struct btrfs_root *root)  in btrfs_drop_and_free_fs_root()  argument
3868 			  (unsigned long)root->root_key.objectid);  in btrfs_drop_and_free_fs_root()
3871 	if (btrfs_root_refs(&root->root_item) == 0)  in btrfs_drop_and_free_fs_root()
3875 		btrfs_free_log(NULL, root);  in btrfs_drop_and_free_fs_root()
3876 		if (root->reloc_root) {  in btrfs_drop_and_free_fs_root()
3877 			free_extent_buffer(root->reloc_root->node);  in btrfs_drop_and_free_fs_root()
3878 			free_extent_buffer(root->reloc_root->commit_root);  in btrfs_drop_and_free_fs_root()
3879 			btrfs_put_fs_root(root->reloc_root);  in btrfs_drop_and_free_fs_root()
3880 			root->reloc_root = NULL;  in btrfs_drop_and_free_fs_root()
3884 	if (root->free_ino_pinned)  in btrfs_drop_and_free_fs_root()
3885 		__btrfs_remove_free_space_cache(root->free_ino_pinned);  in btrfs_drop_and_free_fs_root()
3886 	if (root->free_ino_ctl)  in btrfs_drop_and_free_fs_root()
3887 		__btrfs_remove_free_space_cache(root->free_ino_ctl);  in btrfs_drop_and_free_fs_root()
3888 	btrfs_free_fs_root(root);  in btrfs_drop_and_free_fs_root()
3891 void btrfs_free_fs_root(struct btrfs_root *root)  in btrfs_free_fs_root()  argument
3893 	iput(root->ino_cache_inode);  in btrfs_free_fs_root()
3894 	WARN_ON(!RB_EMPTY_ROOT(&root->inode_tree));  in btrfs_free_fs_root()
3895 	if (root->anon_dev)  in btrfs_free_fs_root()
3896 		free_anon_bdev(root->anon_dev);  in btrfs_free_fs_root()
3897 	if (root->subv_writers)  in btrfs_free_fs_root()
3898 		btrfs_free_subvolume_writers(root->subv_writers);  in btrfs_free_fs_root()
3899 	free_extent_buffer(root->node);  in btrfs_free_fs_root()
3900 	free_extent_buffer(root->commit_root);  in btrfs_free_fs_root()
3901 	kfree(root->free_ino_ctl);  in btrfs_free_fs_root()
3902 	kfree(root->free_ino_pinned);  in btrfs_free_fs_root()
3903 	btrfs_put_fs_root(root);  in btrfs_free_fs_root()
3959 	struct btrfs_root *root = fs_info->tree_root;  in btrfs_commit_super()  local
3971 	trans = btrfs_join_transaction(root);  in btrfs_commit_super()
4108 	struct btrfs_root *root;  in btrfs_mark_buffer_dirty()  local
4121 	root = BTRFS_I(buf->pages[0]->mapping->host)->root;  in btrfs_mark_buffer_dirty()
4122 	fs_info = root->fs_info;  in btrfs_mark_buffer_dirty()
4199 static void btrfs_destroy_ordered_extents(struct btrfs_root *root)  in btrfs_destroy_ordered_extents()  argument
4203 	spin_lock(&root->ordered_extent_lock);  in btrfs_destroy_ordered_extents()
4208 	list_for_each_entry(ordered, &root->ordered_extents,  in btrfs_destroy_ordered_extents()
4211 	spin_unlock(&root->ordered_extent_lock);  in btrfs_destroy_ordered_extents()
4216 	struct btrfs_root *root;  in btrfs_destroy_all_ordered_extents()  local
4224 		root = list_first_entry(&splice, struct btrfs_root,  in btrfs_destroy_all_ordered_extents()
4226 		list_move_tail(&root->ordered_root,  in btrfs_destroy_all_ordered_extents()
4230 		btrfs_destroy_ordered_extents(root);  in btrfs_destroy_all_ordered_extents()
4307 static void btrfs_destroy_delalloc_inodes(struct btrfs_root *root)  in btrfs_destroy_delalloc_inodes()  argument
4314 	spin_lock(&root->delalloc_lock);  in btrfs_destroy_delalloc_inodes()
4315 	list_splice_init(&root->delalloc_inodes, &splice);  in btrfs_destroy_delalloc_inodes()
4321 		__btrfs_del_delalloc_inode(root, btrfs_inode);  in btrfs_destroy_delalloc_inodes()
4322 		spin_unlock(&root->delalloc_lock);  in btrfs_destroy_delalloc_inodes()
4333 		spin_lock(&root->delalloc_lock);  in btrfs_destroy_delalloc_inodes()
4335 	spin_unlock(&root->delalloc_lock);  in btrfs_destroy_delalloc_inodes()
4340 	struct btrfs_root *root;  in btrfs_destroy_all_delalloc_inodes()  local
4348 		root = list_first_entry(&splice, struct btrfs_root,  in btrfs_destroy_all_delalloc_inodes()
4350 		root = btrfs_grab_fs_root(root);  in btrfs_destroy_all_delalloc_inodes()
4351 		BUG_ON(!root);  in btrfs_destroy_all_delalloc_inodes()
4354 		btrfs_destroy_delalloc_inodes(root);  in btrfs_destroy_all_delalloc_inodes()
4355 		btrfs_put_fs_root(root);  in btrfs_destroy_all_delalloc_inodes()