linux-kernel - Re: [PATCH memcg v3 3/3] memcg: prohibit unconditional exceeding the limit of dying tasks

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Message-ID: <ea14200f-ad2c-6901-25da-54900fe2ce14@virtuozzo.com>
Date:   Thu, 28 Oct 2021 10:22:56 +0300
From:   Vasily Averin <vvs@...tuozzo.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...e.com>
Cc:     Johannes Weiner <hannes@...xchg.org>,
        Vladimir Davydov <vdavydov.dev@...il.com>,
        Roman Gushchin <guro@...com>,
        Uladzislau Rezki <urezki@...il.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Shakeel Butt <shakeelb@...gle.com>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
        cgroups@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, kernel@...nvz.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH memcg v3 3/3] memcg: prohibit unconditional exceeding the
 limit of dying tasks

On 28.10.2021 01:36, Andrew Morton wrote:
> On Mon, 25 Oct 2021 11:36:41 +0200 Michal Hocko <mhocko@...e.com> wrote:
> 
>> My view on stable backport is similar to the previous patch. If we want
>> to have it there then let's wait for some time to see whether there are
>> any fallouts as this patch depends on the PF_OOM change.
> 
> It's strange that [1/3] doesn't have cc:stable, but [2/3] and [3/3] do
> not.  What is the thinking here?

My fault, I missed it.
All 3 patches should be backported,
I did it already to stables kernels since 4.4 and I'm ready to submit it in demand.

> I expect we'd be OK with merging these into 5.16-rc1.  This still gives
> another couple of months in -rc to shake out any problems.  But I
> suspect the -stable maintainers will merge and release the patches
> before they are released in 5.16.
> 
> In which case an alternative would be not to mark these patches
> cc:stable and to somehow remember to ask the -stable maintainers to
> merge them after 5.16 has been on the streets for a suitable period.
> 
> Greg, thoughts?

If you wish I can remind Greg in a month or even after 5.17 release.

Thank you,
	Vasily Averin