RFR: 8308181: Generational ZGC: Remove CLDG_lock from old gen root scanning

Tue May 16 13:34:48 UTC 2023

On Tue, 16 May 2023 12:25:13 GMT, Erik Österlund <eosterlund at openjdk.org> wrote:

> We already removed the CLDG_lock from young gen root scanning, after the CLDG was made concurrently walkable with [JDK-8307106](https://bugs.openjdk.org/browse/JDK-8307106). We should remove it from the old generation root scanning code as well.

Marked as reviewed by ayang (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/14011#pullrequestreview-1428594532