RFR: 8196217: NMT: add_committed_regions doesn't merge succeeding regions

[Stefan Karlsson]

Thanks, Zhengyu.

StefanK

On 2018-01-28 01:20, Zhengyu Gu wrote:
> Looks good to me.
> 
> Thanks for fixing it.
> 
> -Zhengyu
> 
> On 01/26/2018 04:37 AM, Stefan Karlsson wrote:
>> Hi all,
>>
>> Please review this patch to fix merging of committed regions in NMT. 
>> Before this patch, only the regions without 'next' regions were merged.
>>
>> http://cr.openjdk.java.net/~stefank/8196217/webrev.01/
>>
>> This was found while running stress tests on ZGC:
>> http://mail.openjdk.java.net/pipermail/zgc-dev/2018-January/000127.html
>>
>> Tested with the new test in the patch and the rest of the tests in 
>> test/hotspot/jtreg/runtime/NMT.
>>
>> Thanks,
>> StefanK