btrfs_qgroup_create unused parameter

[Kevin Brandstatter <icarusthecow@gmail.com>]

|The code is pasted below for convenience of reference, but in the function to 
create a qgruop, it taks a 4th parameter (char * name). I assume this is the name
of the path to limit, however, i don't see where its used anywhere in the function.

-Kevin Brandstatter

int btrfs_create_qgroup(struct btrfs_trans_handle *trans,
			struct btrfs_fs_info *fs_info, u64 qgroupid, *char** *****name**)*
{
	struct btrfs_root *quota_root;
	struct btrfs_qgroup *qgroup;
	int ret = 0;

	mutex_lock(&fs_info->qgroup_ioctl_lock);
	quota_root = fs_info->quota_root;
	if (!quota_root) {
		ret = -EINVAL;
		goto out;
	}
	qgroup = find_qgroup_rb(fs_info, qgroupid);
	if (qgroup) {
		ret = -EEXIST;
		goto out;
	}

	ret = add_qgroup_item(trans, quota_root, qgroupid);
	if (ret)
		goto out;

	spin_lock(&fs_info->qgroup_lock);
	qgroup = add_qgroup_rb(fs_info, qgroupid);
	spin_unlock(&fs_info->qgroup_lock);

	if (IS_ERR(qgroup))
		ret = PTR_ERR(qgroup);
out:
	mutex_unlock(&fs_info->qgroup_ioctl_lock);
	return ret;
}|