Request for review JDK-8065402, , G1 does not expand marking stack when mark stack overflow happens during concurrent marking

[Thomas Schatzl]

Hi Alex,

On Thu, 2017-04-27 at 16:39 -0400, Alexander Harlap wrote:
[...]
> Revised change is here: 
> http://cr.openjdk.java.net/~aharlap/8065402/webrev.01/
> I retested change.
> 

  looks good.

Thomas