linux-kernel - Re: [PATCH V2] mm/gup: Clear the LRU flag of a page before adding to LRU batch

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Message-ID: <CAF8kJuMBMJCdmjwwPxWn44CDMSngB+uqNYERDU=xPAQYNPrbNQ@mail.gmail.com>
Date: Wed, 4 Sep 2024 22:00:44 -0700
From: Chris Li <chrisl@...nel.org>
To: Linux regressions mailing list <regressions@...ts.linux.dev>
Cc: Kairui Song <ryncsn@...il.com>, Ge Yang <yangge1116@....com>, Yu Zhao <yuzhao@...gle.com>, 
	Andrew Morton <akpm@...ux-foundation.org>, linux-mm <linux-mm@...ck.org>, 
	LKML <linux-kernel@...r.kernel.org>, stable@...r.kernel.org, 
	Barry Song <21cnbao@...il.com>, David Hildenbrand <david@...hat.com>, baolin.wang@...ux.alibaba.com, 
	liuzixing@...on.cn, Hugh Dickins <hughd@...gle.com>
Subject: Re: [PATCH V2] mm/gup: Clear the LRU flag of a page before adding to
 LRU batch

Hi Thorsten,

On Mon, Sep 2, 2024 at 5:54 AM Linux regression tracking (Thorsten
Leemhuis) <regressions@...mhuis.info> wrote:
>
> Hi, Thorsten here, the Linux kernel's regression tracker. Top-posting
> for once, to make this easily accessible to everyone.
>
> Chris et. al., was that fix from Yu ever submitted? From here it looks

Not yet. Let me make a proper patch and add "suggested-by" Yu.

It is one patch I have to apply to the mm-unstable before stress
testing the swapping code. I even have a script performing the bisect
after applying this one line fix, so that I can hunt down the other
swap unstable patch.

> like fixing this regression fell through the cracks; but at the same
> time I have this strange feeling that I'm missing something obvious here
> and will look stupid by writing this mail... If that's the case: sorry
> for the noise.

Not at all. You did the right thing. Thanks for the reminder. I also
want to get rid of my one off private patch fix as well.

Chris