RFR: 8271930: Simplify end_card calculation in G1BlockOffsetTablePart::verify

[Thomas Schatzl]

On Thu, 5 Aug 2021 09:12:38 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Simplify `end_card` calculation and some general cleanup.
> 
> Test: hotspot_gc

Lgtm apart from the minor comment typos.

src/hotspot/share/gc/g1/heapRegion.cpp line 717:

> 715:   }
> 716: 
> 717:   // only regions in old generation contain valid BOT

Please start the sentence with upper case and end with full stop.

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Marked as reviewed by tschatzl (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/5015