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From:   Linus Torvalds <torvalds@linux-foundation.org>
Date:   Tue, 7 Sep 2021 09:39:05 -0700
Message-ID: <CAHk-=wgrF65BpP6P6_a6+k+C8V+JOBiEx0X-c9idiM87uk32FQ@mail.gmail.com>
Subject: Re: [memcg] 0f12156dff: will-it-scale.per_process_ops -33.6% regression
To:     Jens Axboe <axboe@kernel.dk>
Cc:     kernel test robot <oliver.sang@intel.com>,
        Vasily Averin <vvs@virtuozzo.com>,
        Shakeel Butt <shakeelb@google.com>,
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On Tue, Sep 7, 2021 at 8:46 AM Jens Axboe <axboe@kernel.dk> wrote:
>
> Are we at all worried about these? There's been a number of them
> reported, basically for all the accounting enablements that have been
> done in this merge window.

We are worried about them. I'm considering reverting several of them
because I think the problems are

 (a) big

 (b) nontrivial

and the patches clearly weren't ready and people weren't aware of this issue.

           Linus