linux-kernel - Re: [PATCH v5 14/19] mm, swap: cleanup swap entry management workflow

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Message-ID: <CACePvbWTFmH2xyt+F62EfF0ASwrt7ojmfTktjkKov6TDmXDHcg@mail.gmail.com>
Date: Fri, 16 Jan 2026 02:57:32 -0800
From: Chris Li <chrisl@...nel.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Kairui Song <ryncsn@...il.com>, linux-mm@...ck.org, Baoquan He <bhe@...hat.com>, 
	Barry Song <baohua@...nel.org>, Nhat Pham <nphamcs@...il.com>, 
	Yosry Ahmed <yosry.ahmed@...ux.dev>, David Hildenbrand <david@...nel.org>, 
	Johannes Weiner <hannes@...xchg.org>, Youngjun Park <youngjun.park@....com>, 
	Hugh Dickins <hughd@...gle.com>, Baolin Wang <baolin.wang@...ux.alibaba.com>, 
	Ying Huang <ying.huang@...ux.alibaba.com>, Kemeng Shi <shikemeng@...weicloud.com>, 
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>, 
	"Matthew Wilcox (Oracle)" <willy@...radead.org>, linux-kernel@...r.kernel.org, 
	linux-pm@...r.kernel.org, "Rafael J. Wysocki (Intel)" <rafael@...nel.org>, Chris Mason <clm@...a.com>, 
	Yi Lai <yi1.lai@...el.com>
Subject: Re: [PATCH v5 14/19] mm, swap: cleanup swap entry management workflow

On Wed, Jan 14, 2026 at 2:29 PM Andrew Morton <akpm@...ux-foundation.org> wrote:
>
> On Thu, 15 Jan 2026 00:53:41 +0800 Kairui Song <ryncsn@...il.com> wrote:
>
> > Is it convenient for you to squash this attached fix into this patch?
>
> Done, below
>
> > That's the two issues from Chris Mason and Lai Yi combined in a clean
> > to apply format, only 3 lines change.
>
> Let's cc them!
>
> > There might be minor conflict by removing the WARN_ON in two following
> > patches, but should be easy to resolve. I can send a v6 if that's
> > troublesome.
>
> All fixed up, thanks.
>
>
> From: Kairui Song <kasong@...cent.com>
> Subject: mm, swap: fix locking and leaking with hibernation snapshot releasing
> Date: Thu, 15 Jan 2026 00:15:27 +0800
>
> fix leak, per Chris Mason.  Remove WARN_ON, per Lai Yi

That is a great catch. Thanks.

>
> Link: https://lkml.kernel.org/r/CAMgjq7AUz10uETVm8ozDWcB3XohkOqf0i33KGrAquvEVvfp5cg@mail.gmail.com
> Signed-off-by: Kairui Song <kasong@...cent.com>
> Cc: Lai Yi <yi1.lai@...ux.intel.com>
> Cc: Chris Mason <clm@...com>
> Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>

That small fix looks good to me.

Chris