DM_VERITY_FEC_BUF_RS_BITS
return 1 << (v->data_dev_block_bits - DM_VERITY_FEC_BUF_RS_BITS);
memset(fio->bufs[n], 0, v->fec->rsn << DM_VERITY_FEC_BUF_RS_BITS);
pos += fio->nbufs << DM_VERITY_FEC_BUF_RS_BITS;
for (__j = 0; __j < 1 << DM_VERITY_FEC_BUF_RS_BITS; __j++)
f->rsn << DM_VERITY_FEC_BUF_RS_BITS,
return (i << DM_VERITY_FEC_BUF_RS_BITS) + j;