IopReleaseFileObjectLock

NTSTATUS __stdcall IopReleaseFileObjectLock(PADAPTER_OBJECT DmaAdapter){
  UINT64 p_GrowLock; 
  _ETHREAD *CurrentThread; 
  unsigned int SessionId; 
  unsigned __int8 v5; 
  int v6; 
  bool v7; 
  __int64 v8; 
  _KLOCK_ENTRY *v9; 
  int v10; 
  unsigned int v11; 
  __int64 v12; 
  NTSTATUS result; 
  UINT64 Flags; 
  UINT64 a3; 
  UINT64 BoostPriority; 
  _KTHREAD *Thread; 

  p_GrowLock = (UINT64)&DmaAdapter->AdapterObject.GrowLock;
  Thread = 0i64;
  LODWORD(BoostPriority) = KeGetCurrentThread()->Priority;
  _InterlockedExchange((volatile __int32 *)&DmaAdapter->AdapterObject.CrashDump.ScatterHint.Offset + 1, 0);
  if( DmaAdapter->AdapterObject.CrashDump.ScatterHint.Offset )
  {
    LOBYTE(Flags) = 0;
    KeSetEventBoostPriorityEx(
      &DmaAdapter->AdapterObject.GrowLock,
      (_KTHREAD **)&Thread,
      &BoostPriority,
      &DmaAdapter->AdapterObject.GrowLock,
      Flags);
  }
  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  LODWORD(a3) = 0;
  if( MiGetSystemRegionType(p_GrowLock) == 1 )
    SessionId = MmGetSessionIdEx(CurrentThread->Tcb.ApcState.Process);
  else
    SessionId = -1;
  --CurrentThread->Tcb.SpecialApcDisable;
  v5 = ++CurrentThread->Tcb.AbAllocationRegionCount;
  v6 = ((char)CurrentThread->Tcb.AbEntrySummary | (char)CurrentThread->Tcb.AbOrphanedEntrySummary) ^ 0x3F;
  v7 = !_BitScanReverse((unsigned int *)&v8, v6);
  if( v7 )
    goto LABEL_21;
  while( 1 )
  {
    v9 = &CurrentThread->Tcb.LockEntries[v8];
    v6 &= ~(1 << v8);
    if( (v9->AcquiredByte & 1) != 0
      && (v9->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 1) == 0
      && (v9->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 0x7FFFFFFFFFFFFFFCi64) == (p_GrowLock & 0x7FFFFFFFFFFFFFFCi64)
      && v9->LockState.SessionId == SessionId )
    {
      v9->AcquiredByte &= ~1u;
      if( v9->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 )
        break;
    }
    v7 = !_BitScanReverse((unsigned int *)&v8, v6);
    if( v7 )
      goto LABEL_21;
  }
  if( !v9 )
  {
LABEL_21:
    if( (*(&CurrentThread->Tcb.MiscFlags + 1) & 0x10000) == 0 )
      KeBugCheckEx(0x162u, CurrentThread, (PVOID)p_GrowLock, (PVOID)SessionId, 0i64);
  }
  else
  {
    v9->CrossThreadReleasableAndBusyByte |= 2u;
    if( v9->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 < 0 )
      KiAbEntryRemoveFromTree(v9);
    v10 = v9->BoostBitmap.AllFields & 0x1FFFF;
    v11 = v9->BoostBitmap.AllFields & 0xFFFE0000;
    v9->ThreadLocalFlags &= ~1u;
    LODWORD(a3) = v10;
    v9->BoostBitmap.AllFields = v11;
    v9->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 = 0i64;
    v12 = v9 - CurrentThread->Tcb.LockEntries;
    if( v5 == 1 )
      CurrentThread->Tcb.AbEntrySummary |= 1 << v12;
    else
      _InterlockedOr8((volatile signed __int8 *)&CurrentThread->Tcb.AbOrphanedEntrySummary, 1 << v12);
  }
  --CurrentThread->Tcb.AbAllocationRegionCount;
  KiAbThreadRemoveBoosts(&CurrentThread->Tcb, (VOID *)p_GrowLock, &a3);
  v7 = CurrentThread->Tcb.SpecialApcDisable++ == -1;
  if( v7
    && ($F25F8C4BA33AF922A5F1AF68CD89DDDF *)CurrentThread->Tcb.ApcState.ApcListHead[0].Flink != &CurrentThread->Tcb.152 )
  {
    KiCheckForKernelApcDelivery();
  }
  HalPutDmaAdapter(DmaAdapter);
  KeLeaveCriticalRegion();
  return result;
}

Referenced by: