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Date: Mon, 23 Mar 2026 15:48:33 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Youngjun Park <youngjun.park@lge.com>
Cc: "Rafael J . Wysocki" <rafael@kernel.org>, Chris Li <chrisl@kernel.org>,
 Kairui Song <kasong@tencent.com>, Pavel Machek <pavel@kernel.org>, Kemeng
 Shi <shikemeng@huaweicloud.com>, Nhat Pham <nphamcs@gmail.com>, Baoquan He
 <bhe@redhat.com>, Barry Song <baohua@kernel.org>, Usama Arif
 <usama.arif@linux.dev>, linux-pm@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH v8 0/2] mm/swap, PM: hibernate: fix swapoff race in
 uswsusp by pinning swap device
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On Tue, 24 Mar 2026 01:08:20 +0900 Youngjun Park <youngjun.park@lge.com> wrote:

> Rebased onto mm-new per Andrew's suggestion [1]. The si->flags race
> flagged by AI review in v7 (between SWP_HIBERNATION and cont_lock in
> add_swap_count_continuation) and the proposed fixes discussed there
> (atomic ops for si->flags, or serializing with swap_lock) are all moot
> on mm-new since Kairui's series removed that code path entirely.
> kernel/power/ changes are small, so Andrew proposed carrying everything
> through mm-new.
> 
> Rafael, could you ack the PM-side changes?

Please.

We'll hit a conflict in linux-next and Mark will tell us and we can
flag that to Linus when merging into mainline, usual stuff.

Or we can park this until the next cycle, depends on how serious the
bug is.  How serious is the bug?