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From: "Rafael J. Wysocki" <rafael@kernel.org>
Date: Tue, 2 Jan 2024 14:18:43 +0100
Message-ID: <CAJZ5v0j6vspzj00ZH66eHtcDP8_fUcaR+KNoaTA8qG1r0hkrVQ@mail.gmail.com>
Subject: Re: [PATCH v1 0/3] PM: sleep: Fix possible device suspend-resume deadlocks
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Greg KH <gregkh@linuxfoundation.org>, linux-pm@vger.kernel.org, 
	Youngmin Nam <youngmin.nam@samsung.com>, rafael@kernel.org, linux-kernel@vger.kernel.org, 
	d7271.choe@samsung.com, janghyuck.kim@samsung.com, hyesoo.yu@samsung.com, 
	Alan Stern <stern@rowland.harvard.edu>, Ulf Hansson <ulf.hansson@linaro.org>
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On Wed, Dec 27, 2023 at 9:41=E2=80=AFPM Rafael J. Wysocki <rjw@rjwysocki.ne=
t> wrote:
>
> Hi Everyone,
>
> As reported here
>
> https://lore.kernel.org/linux-pm/ZYvjiqX6EsL15moe@perf/
>
> the device suspend-resume code running during system-wide PM transitions
> deadlock on low memory, because it attempts to acquire a mutex that's
> already held by it in those cases.
>
> This series addresses the issue by changing the resume code behavior
> to directly run the device PM functions synchronously if they cannot
> be scheduled for asynchronous executions (patch [3/3]).
>
> For this purpose, the async code is rearranged (patch [1/3]) and a
> new variant of async_schedule_dev() is introduced (patch [2/3]).

Given the lack of negative feedback, I've queued up this series for 6.8-rc1=
.

Please let me know if there are any issues with that.

Thanks!