EV_CLEANUP
switch (ev & ~EV_CLEANUP) {
(test_bit(DE_HAVE_BARRIER_NUMBER, &epoch->flags) || ev & EV_CLEANUP)) {
if (!(ev & EV_CLEANUP)) {
ev = EV_BECAME_LAST | (ev & EV_CLEANUP);
drbd_may_finish_epoch(peer_device->connection, peer_req->epoch, EV_PUT + (cancel ? EV_CLEANUP : 0));
drbd_may_finish_epoch(connection, peer_req->epoch, EV_PUT | EV_CLEANUP);