dq_bhardlimit
dq->dq_ihardlimit == 0 && dq->dq_bhardlimit == 0)
dq->dq_bhardlimit = dqb32->dqb_bhardlimit;
dq->dq_bhardlimit = be64toh(dqb64->dqb_bhardlimit);
dqb32->dqb_bhardlimit = CLIP32(dq->dq_bhardlimit);
dqb64->dqb_bhardlimit = htobe64(dq->dq_bhardlimit);
if (ncurblocks >= dq->dq_bhardlimit && dq->dq_bhardlimit) {
dq->dq_ihardlimit == 0 && dq->dq_bhardlimit == 0)