fio: enable dataplacement(fdp) while replaying I/Os

Add initialization and dataplacement logic to enable
dataplacement(fdp) while fio replays I/Os with read_iolog.

Signed-off-by: Hyunwoo Park <dshw.park@samsung.com>

iolog.c

@@ -140,8 +140,13 @@ static int ipo_special(struct thread_data *td, struct io_piece *ipo)
 			break;
 		}
 		ret = td_io_open_file(td, f);
-		if (!ret)
+		if (!ret){
+			if (td->o.dp_type != FIO_DP_NONE) {
+				if (dp_init(td))
+					return false;
+			}
 			break;
+		}
 		td_verror(td, ret, "iolog open file");
 		return -1;
 	case FIO_LOG_CLOSE_FILE:
@@ -233,6 +238,9 @@ int read_iolog_get(struct thread_data *td, struct io_u *io_u)
 				usec_sleep(td, (ipo->delay - elapsed) * 1000);
 		}
 
+		if (td->o.dp_type != FIO_DP_NONE)
+			dp_fill_dspec_data(td, io_u);
+
 		free(ipo);
 
 		if (io_u->ddir != DDIR_WAIT)