BTRFS_ROOT_HAS_LOG_TREE
if (!test_bit(BTRFS_ROOT_HAS_LOG_TREE, &tree_root->state)) {
set_bit(BTRFS_ROOT_HAS_LOG_TREE, &tree_root->state);
set_bit(BTRFS_ROOT_HAS_LOG_TREE, &root->state);
clear_bit(BTRFS_ROOT_HAS_LOG_TREE, &root->state);
clear_bit(BTRFS_ROOT_HAS_LOG_TREE, &fs_info->tree_root->state);
if (!test_bit(BTRFS_ROOT_HAS_LOG_TREE, &inode->root->state))
if (!test_bit(BTRFS_ROOT_HAS_LOG_TREE, &root->state))