nvme_lbaf_index
u32 elbaf = le32_to_cpu(nvm->elbaf[nvme_lbaf_index(id->flbas)]);
head->ms = le16_to_cpu(id->lbaf[nvme_lbaf_index(id->flbas)].ms);
lbaf = nvme_lbaf_index(id->flbas);