linux-kernel - Re: [PATCH v2] mm/swap: fix race when skipping swapcache

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Date: Fri, 16 Feb 2024 18:01:53 +0800
From: Kairui Song <ryncsn@...il.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Minchan Kim <minchan@...nel.org>, David Hildenbrand <david@...hat.com>, linux-mm@...ck.org, 
	"Huang, Ying" <ying.huang@...el.com>, Chris Li <chrisl@...nel.org>, Yu Zhao <yuzhao@...gle.com>, 
	Barry Song <v-songbaohua@...o.com>, SeongJae Park <sj@...nel.org>, Hugh Dickins <hughd@...gle.com>, 
	Johannes Weiner <hannes@...xchg.org>, Matthew Wilcox <willy@...radead.org>, Michal Hocko <mhocko@...e.com>, 
	Yosry Ahmed <yosryahmed@...gle.com>, stable@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] mm/swap: fix race when skipping swapcache

On Fri, Feb 16, 2024 at 6:58 AM Andrew Morton <akpm@...ux-foundation.org> wrote:
> On Thu, 15 Feb 2024 12:55:11 -0800 Minchan Kim <minchan@...nel.org> wrote:
> > Only concern of the approach is that it would be harder to have the fix
> > in the stable tree. If there isn't strong objection, I prefer the
> > Kairui's orginal solution(with some tweak of scheduler if it's
> > necessary) first and then pursue your idea on latest tree.
>
> Do we agree that this fix is needed in -stable?  For some reason I
> don't have a cc:stable in the changelog.
>
> I'd like to move this patch into mm-hotfixes-stable in order to get it
> upstream very soon.  Are we all agreeable with that?  I don't have an
> Acked-by: David?
>
> I have a note (which dates back to an earlier version) that Barry would
> be performing runtime testing.  Has that occurred?
>
> Thanks.
>

Hi Andrew,

I think this fix is needed for stable, I've sent V3, if we agree on
that, please consider V3 which includes changes we have discussed so
far, thanks!