vma_needs_reservation
long rc = vma_needs_reservation(h, vma, address);
retval = vma_needs_reservation(h, vma, addr);
int rc = vma_needs_reservation(h, vma, address);
if (vma_needs_reservation(h, vma, vmf->address) < 0) {
if (vma_needs_reservation(h, vma, vmf.address) < 0) {