BUF_ARCHIVE
dumptoarchive = p->aflag & BUF_ARCHIVE;
if ((arch >= 0) && (bp->b_flags & BUF_ARCHIVE)) {
if (archive && flags & BUF_ARCHIVE && !punt &&
flags |= BUF_ARCHIVE;
slp->sl_req->aflag |= BUF_ARCHIVE;
slp->sl_req->aflag |= BUF_ARCHIVE;