RFR: 8202662: JFR tests fails: Could not find leak with class

[Kim Barrett]

> On May 7, 2018, at 12:57 PM, Stefan Johansson <stefan.johansson at oracle.com> wrote:
> 
> Hi all,
> 
> Please review this fix to avoid failing TLAB allocations when a small TLABSize is set.
> 
> JBS: https://bugs.openjdk.java.net/browse/JDK-8202662
> Webrev: http://cr.openjdk.java.net/~sjohanss/8202662/00/
> 
> Summary
> A recent change to allow more flexible TLAB sizing was incomplete. When setting a small initial size using TLABSize, all TLAB allocations fail due to a new check trying to ensure we never give out TLABs smaller than MinTLABSize. This check was faulty because of a mix-up between bytes and words.
> 
> Testing
> Locally verified that this fix solves the problems in JFR testing. Running the change through Mach5 over night.
> 
> Thanks,
> Stefan

Looks good.