closure_call
closure_call(cl, journal_write_unlocked, NULL, &c->cl);
closure_call(&op->cl, bch_data_insert, NULL, cl);
closure_call(&io->cl, read_moving_submit, NULL, &cl);
closure_call(&s->iop.cl, bch_data_insert, NULL, cl);
closure_call(&s->iop.cl, bch_data_insert, NULL, cl);
closure_call(&s->iop.cl, cache_lookup, NULL, cl);
closure_call(&s->iop.cl, bch_data_insert, NULL, cl);
closure_call(&s->iop.cl, cache_lookup, NULL, cl);
closure_call(&io->cl, read_dirty_submit, NULL, &cl);