MMU_NOTIFY_UNMAP
if (range->event == MMU_NOTIFY_UNMAP) {
case MMU_NOTIFY_UNMAP:
if (!xe_vm_is_closed(vm) && mmu_range->event == MMU_NOTIFY_UNMAP)
if (range->event != MMU_NOTIFY_UNMAP)
if (range->event == MMU_NOTIFY_UNMAP) {
mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma->vm_mm,
mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, mm,