RFR(XXS) 8186748: NMT: memTracker::record_virtual_memory_reserve_and_commit() does not tag the memory as committed

[coleen.phillimore at oracle.com]

This looks good.  I assume that you ran the NMT tests on it.  I'll 
sponsor it.
Coleen


On 8/24/17 2:29 PM, Zhengyu Gu wrote:
> Please review this one line change to fix missing tag of committed 
> memory region.
>
> The bug results NMT to report "Shared class space" as reserved, but 
> not committed region.
>
>
> bug:    https://bugs.openjdk.java.net/browse/JDK-8186748
> Webrev: http://cr.openjdk.java.net/~zgu/8186748/webrev.00/
>
>
>
> Before:
>
> - Shared class space (reserved=16904KB, committed=0KB)
>                             (mmap: reserved=16904KB, committed=0KB)
>
> After:
>
> -        Shared class space (reserved=16832KB, committed=16832KB)
>                             (mmap: reserved=16832KB, committed=16832KB)
>
>
> Thanks,
>
> -Zhengyu