Metadatacopyenum _IO_PRIORITY_HINT { IoPriorityVeryLow = 0,/* 0x0 */ IoPriorityLow = 1,/* 0x1 */ IoPriorityNormal = 2,/* 0x2 */ IoPriorityHigh = 3,/* 0x3 */ IoPriorityCritical = 4,/* 0x4 */ MaxIoPriorityTypes = 5,/* 0x5 */};