vrm_implies_new_addr
if (vrm_implies_new_addr(vrm))
if (!vrm_implies_new_addr(vrm))
if (!vrm_implies_new_addr(vrm))
res = vrm_implies_new_addr(vrm) ? mremap_to(vrm) : mremap_at(vrm);
unsigned long new_addr = vrm_implies_new_addr(vrm) ? vrm->new_addr : 0;