RFR (S): 8225418: G1: region attribute remembered set state disagrees with actual remembered set state

[Kim Barrett]

> On Jun 7, 2019, at 6:51 AM, Thomas Schatzl <thomas.schatzl at oracle.com> wrote:
> 
> […]
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8225418
> Webrev:
> http://cr.openjdk.java.net/~tschatzl/8225418/webrev/
> Testing:
> local jtreg passed with the change, failing without (with the
> verification only), hs-tier1-5 60% through
> 
> Thanks,
>  Thomas
> 
> [0] 
> http://mail.openjdk.java.net/pipermail/hotspot-gc-dev/2019-May/025937.html

Looks good.