RFR: 8272788: Nonleaf ranked locks should not be safepoint_check_never [v4]

[Coleen Phillimore]

On Wed, 1 Sep 2021 17:05:26 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> I moved nonleaf ranked locks to be leaf (or leaf+something).  Many of the leaf locks are safepoint_check_never.  Segregating this rank into safepoint checking and non-safepoint checking is left for a future RFE.
>> Tested with tier1-3.  Tier 4-6 testing in progress.
>
> Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Revert NonJavaThreads_lock rank.

Thanks for reviewing Patricio.  Yes, these locks were less difficult to inspect their usage and pretty well tested so this smaller change seems safe in the pursuit of a bigger change.  Thanks!

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PR: https://git.openjdk.java.net/jdk/pull/5203