RFR: 8227369: pd_disjoint_words_atomic() needs to be atomic [v2]

[Aleksey Shipilev]

On Thu, 24 Feb 2022 11:45:17 GMT, David Holmes <dholmes at openjdk.org> wrote:

> I ran some GC benchmarks which turned out to be just specjbb2005 and specjvm2008-*.
> 
> There were two regressions flagged:
> 
> Linux-x64: SPECjvm2008-LU.large-ZGC -5.82%
> macos-x64: SPECjvm2008-Serial-ParGC -4.16%

Myself, I never trust LU.large results, since they experience quite large run-to-run variance in our runs. Serial regression is weird, though, it is usually a very stable workload. Does it reproduce locally? If it does not reproduce, we can go ahead and deal with any regressions later.

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PR: https://git.openjdk.java.net/jdk/pull/7567