RFR: 8270842: G1: Only young regions need to redirty outside references in remset. [v2]

[Hamlin Li]

On Fri, 6 Aug 2021 01:37:52 GMT, Hamlin Li <mli at openjdk.org> wrote:

>> For evac failure objects in non-young regions (old) of cset, the outside reference remset already recorded in the dirty queue, we only needs to do it for obj in young regions
>
> Hamlin Li has updated the pull request incrementally with one additional commit since the last revision:
> 
>   replace out-of-date comments

Thanks for your review, Thomas.

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PR: https://git.openjdk.java.net/jdk/pull/4853