Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Tue, 24 Aug 2021 13:35:44 -0400
From:   Sasha Levin <sashal@kernel.org>
To:     Linus Torvalds <torvalds@linux-foundation.org>
Cc:     Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        stable <stable@vger.kernel.org>,
        kernel test robot <oliver.sang@intel.com>,
        Sandeep Patil <sspatil@android.com>,
        Mel Gorman <mgorman@techsingularity.net>
Subject: Re: [PATCH 5.13 073/127] pipe: avoid unnecessary EPOLLET wakeups
 under normal loads
Message-ID: <YSUt8NdA+5EPJIyD@sashalap>
References: <20210824165607.709387-1-sashal@kernel.org>
 <20210824165607.709387-74-sashal@kernel.org>
 <CAHk-=wiQhb689WEk__vLy-ET4rL69cjq39pGTmrKam=c_0LYGg@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Disposition: inline
In-Reply-To: <CAHk-=wiQhb689WEk__vLy-ET4rL69cjq39pGTmrKam=c_0LYGg@mail.gmail.com>
Precedence: bulk

On Tue, Aug 24, 2021 at 10:00:33AM -0700, Linus Torvalds wrote:
>On Tue, Aug 24, 2021 at 9:57 AM Sasha Levin <sashal@kernel.org> wrote:
>>
>> From: Linus Torvalds <torvalds@linux-foundation.org>
>>
>> [ Upstream commit 3b844826b6c6affa80755254da322b017358a2f4 ]
>
>This one has an odd performance regression report associated with it.
>
>Honestly, I don't understand the performance regression, but that's
>likely on me, not on the kernel test robot.
>
>So I'd hold off on applying it for now. It *might* be some odd test
>robot hiccup, but ..

I'll drop it for now.

Ideally we wouldn't take it at all, but I don't think any of us wants to
field "my tests have regressed!" questions for the next 5 years or so.

Thanks!

-- 
Thanks,
Sasha