NVME_HMB_UNITS
min = (long long unsigned)ctrlr->cdata.hmmin * NVME_HMB_UNITS;
pref = MIN((long long unsigned)ctrlr->cdata.hmpre * NVME_HMB_UNITS, max);
minc = MAX(ctrlr->cdata.hmminds * NVME_HMB_UNITS, ctrlr->page_size);