TRANS_ITRUNC
error = TRANS_ITRUNC(ip, (u_offset_t)lp->l_start, 0, cr);
(void) TRANS_ITRUNC(ip, (u_offset_t)0, I_FREE | I_ACCT, CRED());
error = TRANS_ITRUNC(ip, vap->va_size, 0, cr);
(void) TRANS_ITRUNC(ip, (u_offset_t)0, 0, cr);