xfs_metafile_iget
int xfs_metafile_iget(struct xfs_mount *mp, xfs_ino_t ino,
error = xfs_metafile_iget(mp, mp->m_sb.sb_metadirino, XFS_METAFILE_DIR,
error = xfs_metafile_iget(mp, ino, metafile_type, ipp);