SCX_RQ_BAL_CB_PENDING
if (!(rq->scx.flags & SCX_RQ_BAL_CB_PENDING))
rq->scx.flags &= ~SCX_RQ_BAL_CB_PENDING;
if (rq->scx.flags & SCX_RQ_BAL_CB_PENDING)
rq->scx.flags |= SCX_RQ_BAL_CB_PENDING;