taglinefilesource code
serial_no314drivers/block/hd.cfixstring (id->serial_no, sizeof(id->serial_no));
serial_no1759drivers/block/ide.cfixstring (id->serial_no, sizeof(id->serial_no), bswap);
serial_no28include/asm-alpha/hwrpb.hunsigned long serial_no[2];
serial_no102include/linux/hdreg.hunsigned char  serial_no[20];  /* 0 = not_specified */