Review Request: JDK-8226850: Use an EnumSet for DirtyBits instead of an ordinal-based mask

[Nir Lisker]

Hi Kevin/Ambarish,

Please review the simple fix for:
https://bugs.openjdk.java.net/browse/JDK-8226850
http://cr.openjdk.java.net/~nlisker/8226850/webrev.00/

Thanks,
Nir