BitmapActionStale
action = BitmapActionStale;
[BitmapActionStale] = BitNone,
[BitmapActionStale] = BitNeedSync,
[BitmapActionStale] = BitNeedSync,
[BitmapActionStale] = BitNone,
[BitmapActionStale] = BitNeedSync,
[BitmapActionStale] = BitUnwritten,
[BitmapActionStale] = BitUnwritten,
[BitmapActionStale] = BitUnwritten,