1402 static void re_init_if_first_write(struct drbd_connection *connection, unsigned int epoch)  in re_init_if_first_write()  argument
1406 		connection->send.current_epoch_nr = epoch;  in re_init_if_first_write()
1412 static void maybe_send_barrier(struct drbd_connection *connection, unsigned int epoch)  in maybe_send_barrier()  argument
1417 	if (connection->send.current_epoch_nr != epoch) {  in maybe_send_barrier()
1420 		connection->send.current_epoch_nr = epoch;  in maybe_send_barrier()
1440 	 * replicated epoch, before we went into AHEAD mode.  in w_send_out_of_sync()
1442 	maybe_send_barrier(connection, req->epoch);  in w_send_out_of_sync()
1470 	re_init_if_first_write(connection, req->epoch);  in w_send_dblock()
1471 	maybe_send_barrier(connection, req->epoch);  in w_send_dblock()
1503 	/* Even read requests may close a write epoch,  in w_send_read_req()
1505 	maybe_send_barrier(connection, req->epoch);  in w_send_read_req()
2096 	 * Maybe we still need to close the current epoch,  in wait_for_work()
2127 		 * epoch.  Next incoming request epoch will be connection ->  in wait_for_work()
2128 		 * current transfer log epoch number.  If that is different  in wait_for_work()
2129 		 * from the epoch of the last request we communicated, it is  in wait_for_work()
2130 		 * safe to send the epoch separating barrier now.  in wait_for_work()
2150 		 * e.g. if the current epoch got closed.  in wait_for_work()