[jdk17] RFR: 8268778: CDS check_excluded_classes needs DumpTimeTable_lock

[Ioi Lam]

On Tue, 6 Jul 2021 20:45:22 GMT, Calvin Cheung <ccheung at openjdk.org> wrote:

>> Please  review this clean backport from openjdk/jdk to jdk17.
>> 
>> Since the fix may impact timing and locking order, I decided to apply the fix in the mainline repo first. After 2 weeks of testing there, no problems are found. So it should be safe to integrate the fix into JDK 17.
>
> LGTM.

Thanks @calvinccheung and @yminqi for the review. Mach5 tiers1/2 testing came out clean (except for known failures).

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PR: https://git.openjdk.java.net/jdk17/pull/220