xfs_alloc_update_counters(
	struct xfs_trans	*tp,
	struct xfs_perag	*pag,
	struct xfs_buf		*agbp,
	long			len)
{
	struct xfs_agf		*agf = XFS_BUF_TO_AGF(agbp);

	pag->pagf_freeblks += len;
	be32_add_cpu(&agf->agf_freeblks, len);

	xfs_trans_agblocks_delta(tp, len);
	if (unlikely(be32_to_cpu(agf->agf_freeblks) >
		     be32_to_cpu(agf->agf_length))) {
		xfs_buf_corruption_error(agbp);
		return -EFSCORRUPTED;
	}

	xfs_alloc_log_agf(tp, agbp, XFS_AGF_FREEBLKS);
	return 0;
}
Unknown