struct MMVAD_FLAGS2

typedef struct _MMVAD_FLAGS2
{
     ULONG FileOffset: 24;
     ULONG SecNoChange: 1;
     ULONG OneSecured: 1;
     ULONG MultipleSecured: 1;
     ULONG Spare: 1;
     ULONG LongVad: 1;
     ULONG ExtendableFile: 1;
     ULONG Inherit: 1;
     ULONG CopyOnWrite: 1;
} MMVAD_FLAGS2, *PMMVAD_FLAGS2;

Windows Vista Kernel Structures