zfs_zaccess_delete
int zfs_zaccess_delete(struct znode *, struct znode *, cred_t *);
if (error = zfs_zaccess_delete(sdzp, szp, cr))
if (error = zfs_zaccess_delete(tdzp, tzp, cr))
if (error = zfs_zaccess_delete(dzp, zp, cr)) {
if (error = zfs_zaccess_delete(dzp, zp, cr)) {