Request for Review (s) - 7012980: PSOldGen is increased if there is no space in Metaspace

[Thomas Schatzl]

Hi Jon,

On Thu, 2015-06-18 at 09:02 -0700, Jon Masamitsu wrote:
> A recent integration collided with my patch so I had to merge
> and redo the webrev.  Previously in addition to the fix there was
> a clean up that introduce a method is_system_gc().  The need
> for is_system_gc() was overridden by the already added
> is_user_requested_gc().
> 
> New webrev
> 
> http://cr.openjdk.java.net/~jmasa/7012980/webrev.02/
> 
> Thanks.

  looks good.

One minor nit I can see is the naming of "should_update_promo_stats" - I
am not sure why it is has "promo" in the name.

The other, with the "eden" in the name can be immediately associated
with young gen, the other not so much imo.

Maybe there is a better name of it, but maybe it fits because other
variables related to allocation in the old/tenured gen also have "promo"
in their name. So it is probably best to keep it for uniformity.

Thanks,
  Thomas