RFR: 8247524: Remove unnecessary volatile qualifiers from member functions

[Kim Barrett]

> On Jun 15, 2020, at 7:55 AM, coleen.phillimore at oracle.com wrote:
> 
> 
> This change looks good.  Those volatiles were probably added to quiet the compiler for some callers with volatiles.  This new approach is much better.

Thanks.

> Don't worry about other changes to Metabase; it's gone in Elastic Metaspace.

Thanks for the update.  I haven’t been following the Metaspace revamp discussion.