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//0x4 bytes (sizeof)
enum _IO_PAGING_PRIORITY
{
    IoPagingPriorityInvalid = 0,
    IoPagingPriorityNormal = 1,
    IoPagingPriorityHigh = 2,
    IoPagingPriorityReserved1 = 3,
    IoPagingPriorityReserved2 = 4
};