else if (t->action & BLK_TC_ACT(BLK_TC_DISCARD))
handle_trace_discard(td, t, delay, ios, bs);
else if (t->action & BLK_TC_ACT(BLK_TC_FLUSH))
else if (t->action & BLK_TC_ACT(BLK_TC_DISCARD))
handle_trace_discard(td, t, delay, ios, bs);
else if (t->action & BLK_TC_ACT(BLK_TC_FLUSH))