goto out;
        }
 
-       ret = ubi_io_read(ubi, fmsb, fm_anchor, ubi->leb_start, sizeof(*fmsb));
+       ret = ubi_io_read_data(ubi, fmsb, fm_anchor, 0, sizeof(*fmsb));
        if (ret && ret != UBI_IO_BITFLIPS)
                goto free_fm_sb;
        else if (ret == UBI_IO_BITFLIPS)
                if (sqnum < be64_to_cpu(vh->sqnum))
                        sqnum = be64_to_cpu(vh->sqnum);
 
-               ret = ubi_io_read(ubi, ubi->fm_buf + (ubi->leb_size * i), pnum,
-                                 ubi->leb_start, ubi->leb_size);
+               ret = ubi_io_read_data(ubi, ubi->fm_buf + (ubi->leb_size * i),
+                                      pnum, 0, ubi->leb_size);
                if (ret && ret != UBI_IO_BITFLIPS) {
                        ubi_err(ubi, "unable to read fastmap block# %i (PEB: %i, "
                                "err: %i)", i, pnum, ret);
        }
 
        for (i = 0; i < new_fm->used_blocks; i++) {
-               ret = ubi_io_write(ubi, fm_raw + (i * ubi->leb_size),
-                       new_fm->e[i]->pnum, ubi->leb_start, ubi->leb_size);
+               ret = ubi_io_write_data(ubi, fm_raw + (i * ubi->leb_size),
+                                       new_fm->e[i]->pnum, 0, ubi->leb_size);
                if (ret) {
                        ubi_err(ubi, "unable to write fastmap to PEB %i!",
                                new_fm->e[i]->pnum);