linux-kernel - Re: [REGRESSION] Re: [PATCH 6.1 033/219] memcg: drop kmem.limit_in

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Message-ID: <ZQskGGAwlsr1YxAp@dhcp22.suse.cz>
Date:   Wed, 20 Sep 2023 18:55:52 +0200
From:   Michal Hocko <mhocko@...e.com>
To:     Shakeel Butt <shakeelb@...gle.com>
Cc:     Jeremi Piotrowski <jpiotrowski@...ux.microsoft.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Muchun Song <muchun.song@...ux.dev>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, patches@...ts.linux.dev,
        Tejun Heo <tj@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, regressions@...ts.linux.dev,
        mathieu.tortuyaux@...il.com
Subject: Re: [REGRESSION] Re: [PATCH 6.1 033/219] memcg: drop
 kmem.limit_in_bytes

On Wed 20-09-23 08:32:42, Shakeel Butt wrote:
> Also I don't think reverting 58056f77502f would give any benefit.

Not reverting 58056f77502f would re-introduce the regression in some
non-patched versions of Docker runtimes which cannot handle ENOTSUPP.
So I think we need to revert both or none of them. I would prefer the
later (option 1) as the fix is trivial but I do understand headache
of chasing all those outdated deployments or vendor code forks.
-- 
Michal Hocko
SUSE Labs