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//0x4 bytes (sizeof)
enum _IO_PRIORITY_HINT
{
    IoPriorityVeryLow = 0,
    IoPriorityLow = 1,
    IoPriorityNormal = 2,
    IoPriorityHigh = 3,
    IoPriorityCritical = 4,
    MaxIoPriorityTypes = 5
};