I only see references to a BCH2 ECC in ec.c source file. I would have thought a non-binary code like RS would be better suited to filesystem coding since a faul

I only see references to a BCH2 ECC in ec.c source file. I would have thought a non-binary code like RS would be better suited to filesystem coding since a fault is likely to corrupt more than a single contiguous bit. I don't have any experience with FS ECC, is there a reason BCH2 is desirable for bcachefs?