- buf = (void *) hdr + hdr_size;
- len = get_hdr_inc(td, io_u) - hdr_size;
- mod = hdr_size % td->o.verify_pattern_bytes;
+ buf = (void *) hdr + header_size;
+ len = get_hdr_inc(td, io_u) - header_size;
+ mod = header_size % td->o.verify_pattern_bytes;