nfs4_attr_otw
if (error = nfs4_attr_otw(vp, TAG_FSINFO, &gar,
error = nfs4_attr_otw(vp, TAG_PATHCONF, &gar, NFS4_PATHCONF_MASK, cr);
extern int nfs4_attr_otw(vnode_t *, nfs4_tag_type_t,