BTRFS_SUB_GROUP_TREELOG
ASSERT(space_info->sub_group[0]->subgroup_id == BTRFS_SUB_GROUP_TREELOG);
ASSERT(space_info->subgroup_id == BTRFS_SUB_GROUP_TREELOG);
BTRFS_SUB_GROUP_TREELOG,
case BTRFS_SUB_GROUP_TREELOG: