MiAllocatePagesForMdl

_MDL *__stdcall MiAllocatePagesForMdl(
        _MI_PARTITION *Partition,
        _LARGE_INTEGER LowAddress,
        _LARGE_INTEGER HighAddress,
        _LARGE_INTEGER SkipBytes,
        UINT64 TotalBytes,
        _MI_PFN_CACHE_ATTRIBUTE CacheAttribute,
        UINT16 IdealNode,
        UINT64 Flags){
  INT64 PerformanceCounter; 
  UINT64 v13; 
  UINT64 v14; 
  UINT64 v15; 
  unsigned __int64 v16; 
  UINT64 v17; 
  _MI_PFN_CACHE_ATTRIBUTE v18; 
  INT64 v19; 
  unsigned int v20; 
  void *v21; 
  _MI_PFN_CACHE_ATTRIBUTE v22; 
  UINT64 v23; 
  int v24; 
  __int64 v25; 
  int v27; 
  UINT64 SizeInPages; 
  UINT64 SizeInPagesa; 
  _MI_PFN_CACHE_ATTRIBUTE LowPage; 
  UINT64 LowPagea; 
  INT64 v32; 
  INT64 v33; 
  INT64 v34; 
  INT64 v35; 
  INT64 v36; 
  INT64 v37; 
  UINT16 v38; 
  int v39; 
  INT64 rcx0[10]; 
  __int64 v41[6]; 
  int v42; 
  int v43; 
  _EVENT_DATA_DESCRIPTOR UserData; 

  memset(rcx0, 0i64, sizeof(rcx0));
  PerformanceCounter = KeQueryPerformanceCounter(0i64);
  LODWORD(v37) = Flags;
  LODWORD(v35) = IdealNode;
  LODWORD(v32) = CacheAttribute;
  if( MiValidateMdlAllocationRequest(
         (INT64)rcx0,
         (INT64)Partition,
         LowAddress.QuadPart,
         HighAddress.QuadPart,
         SkipBytes.QuadPart,
         TotalBytes,
         v32,
         v35,
         v37) >= 0
    && (int)MiObtainMdlCharges((_MI_PARTITION *)rcx0, v13, v14, v15, SizeInPages, LowPage, v33) >= 0 )
  {
    v19 = rcx0[8];
    UserData.Ptr = rcx0[5];
    *(_DWORD *)(rcx0[8] + 40) = 0;
    v20 = 0;
    while( 1 )
    {
      v39 = *(_DWORD *)(v19 + 40);
      MiFindPagesForMdl((_MI_PARTITION *)rcx0, (_MDL *)v16, v17, v18, SizeInPagesa, LowPagea, v34, v36, v38);
      v16 = *(unsigned int *)(v19 + 40);
      if( v16 >> 12 == UserData.Ptr )
        break;
      v27 = rcx0[1];
      if( SLOBYTE(rcx0[1]) >= 0 )
        goto LABEL_21;
      if( v39 == (_DWORD)v16 )
      {
        if( v20 > 3 || KeGetCurrentIrql() >= 2u || (rcx0[1] & 8) != 0 )
        {
LABEL_21:
          MiReturnMdlExcess((INT64)rcx0);
          break;
        }
        KeDelayExecutionThread(0, 0, (_LARGE_INTEGER *)&Mi10Milliseconds);
        v27 = rcx0[1];
        ++v20;
      }
      else
      {
        v20 = 0;
      }
      LODWORD(rcx0[1]) = v27 & 0xFFFEFFFF;
    }
    v21 = (void *)rcx0[8];
    if( rcx0[8] )
    {
      if( (Flags & 0x40) == 0 )
      {
        MiInitializeMdlBatchPages((INT64)rcx0);
        MiInitializeMdlPages((ULONG_PTR)v21, LODWORD(rcx0[1]), v22, v23, SizeInPagesa);
      }
      if( (rcx0[1] & 0x100) != 0 )
        rcx0[8] = (INT64)MiRemoveMdlPages(v21, LODWORD(rcx0[1]));
    }
  }
  v24 = rcx0[1];
  v25 = rcx0[8];
  if( EtwEventEnabled(*(&ExBootDevicesRemovedEvent + 251), &KERNEL_MEM_EVENT_MDL_ALLOCATION) )
  {
    v41[0] = EtwpGetDurationSince(PerformanceCounter);
    v41[1] = TotalBytes;
    v41[5] = v25;
    UserData.Ptr = (unsigned __int64)v41;
    v41[2] = LowAddress.QuadPart;
    v41[3] = HighAddress.QuadPart;
    v41[4] = SkipBytes.QuadPart;
    v42 = IdealNode;
    v43 = v24;
    *(_QWORD *)&UserData.Size = 56i64;
    EtwWriteEx(*(&ExBootDevicesRemovedEvent + 251), &KERNEL_MEM_EVENT_MDL_ALLOCATION, 0i64, 1u, 0, 0, 1u, &UserData);
  }
  return(_MDL *)rcx0[8];
}

Referenced by: