Re: [External] Re: [RFC PATCH 00/15] Use obj_cgroup APIs to charge the LRU pages

From: Shakeel Butt
Date: Thu Apr 01 2021 - 14:11:53 EST


On Thu, Apr 1, 2021 at 9:08 AM Muchun Song <songmuchun@xxxxxxxxxxxxx> wrote:
>
[...]
> > The zombie issue is a pretty urgent concern that has caused several
> > production emergencies now. It needs a fix sooner rather than later.
>
> Thank you very much for clarifying the problem for me. I do agree
> with you. This issue should be fixed ASAP. Using objcg is a good
> choice. Dying objcg should not be a problem. Because the size of
> objcg is so small compared to memcg.
>

Just wanted to say out loud that yes this patchset will reduce the
memcg zombie issue but this is not the final destination. We should
continue the discussions on sharing/reusing scenarios.

Muchun, can you please also CC Hugh Dickins and Alex Shi in the next
version of your patchset?