XBDF_BARRIER
if ((sc->xbd_flags & (XBDF_FLUSH|XBDF_BARRIER)) != 0) {
sc->xbd_flags |= XBDF_BARRIER;
if ((sc->xbd_flags & XBDF_BARRIER) != 0) {
else if ((sc->xbd_flags & XBDF_BARRIER) != 0)
if ((sc->xbd_flags & XBDF_BARRIER) != 0) {