UINT8 __stdcall MiLockWorkingSetExclusive(_MMSUPPORT_INSTANCE *Vm){
_MMSUPPORT_SHARED *SharedVm;
UINT8 result;
SharedVm = MiGetSharedVm(Vm);
result = ExAcquireSpinLockExclusive((INT64 *)&SharedVm->WorkingSetLock);
SharedVm->GoodCitizenWaiting = 0;
return result;
}