Re: [PATCH 2/6] mm/page_owner: initialize page owner without holding the zone lock

[Vlastimil Babka]

On 05/03/2016 07:23 AM, js1304@xxxxxxxxx wrote:
> From: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
>
> It's not necessary to initialized page_owner with holding the zone lock.
> It would cause more contention on the zone lock although it's not
> a big problem since it is just debug feature. But, it is better
> than before so do it. This is also preparation step to use stackdepot
> in page owner feature. Stackdepot allocates new pages when there is no
> reserved space and holding the zone lock in this case will cause deadlock.

I have same concerns here as for Patch 1/6.

Thanks.