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//0x4 bytes (sizeof)
struct _MI_PFN_FLAGS
{
    union
    {
        struct
        {
            USHORT ReferenceCount;                                          //0x0
            UCHAR PageLocation:3;                                           //0x2
            UCHAR WriteInProgress:1;                                        //0x2
            UCHAR Modified:1;                                               //0x2
            UCHAR ReadInProgress:1;                                         //0x2
            UCHAR CacheAttribute:2;                                         //0x2
            UCHAR Priority:3;                                               //0x3
            UCHAR OnProtectedStandby:1;                                     //0x3
            UCHAR InPageError:1;                                            //0x3
            UCHAR SystemChargedPage:1;                                      //0x3
            UCHAR RemovalRequested:1;                                       //0x3
            UCHAR ParityError:1;                                            //0x3
        };
        ULONG EntireField;                                                  //0x0
    };
};