struct _PRIVATE_CACHE_MAP_FLAGS {
unsigned long DontUse : 16;/* 0x0:0 4 */
unsigned long ReadAheadActive : 1;/* 0x0:16 4 */
unsigned long ReadAheadEnabled : 1;/* 0x0:17 4 */
unsigned long PagePriority : 3;/* 0x0:18 4 */
unsigned long PipelineReadAheads : 1;/* 0x0:21 4 */
unsigned long Available : 10;/* 0x0:22 4 */
};