PfpPrefetchSharedDeref

VOID __stdcall PfpPrefetchSharedDeref(_PFP_PREFETCH_CONTEXT_SHARED *PrefetchContext){
  signed __int64 v1; 
  bool v2; 
  signed __int64 v3; 

  v1 = _InterlockedExchangeAdd64((volatile signed __int64 *)PrefetchContext + 15, 0xFFFFFFFFFFFFFFFFui64);
  v2 = v1 <= 1;
  v3 = v1 - 1;
  if( v2 )
  {
    if( v3 )
      __fastfail(0xEu);
    ExFreePoolWithTag(PrefetchContext, 0);
  }
}

Referenced by:

PfpPrefetchRequestPerform
PfpPrefetchSharedConflictNotifyEnd
PfpQueryFileExtentsRequest