RFR: 8370389: JavaFrameAnchor on s390 has unnecessary barriers

[Lutz Schmidt]

On Wed, 22 Oct 2025 07:21:45 GMT, Amit Kumar <amitkumar at openjdk.org> wrote:

> No hardware barriers are necessary. All members are volatile and the profiler is run from a signal handler.

LGTM.

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Marked as reviewed by lucy (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/27930#pullrequestreview-3365112084