linux-kernel - Re: [PATCH v3 0/2] fix task_work interation with freezing

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Message-Id: <172068446669.395668.14041206933640697434.b4-ty@kernel.dk>
Date: Thu, 11 Jul 2024 01:54:26 -0600
From: Jens Axboe <axboe@...nel.dk>
To: io-uring@...r.kernel.org, Pavel Begunkov <asml.silence@...il.com>
Cc: Oleg Nesterov <oleg@...hat.com>, 
 Andrew Morton <akpm@...ux-foundation.org>, 
 Christian Brauner <brauner@...nel.org>, 
 Tycho Andersen <tandersen@...flix.com>, 
 Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org, 
 Julian Orth <ju.orth@...il.com>, Peter Zijlstra <peterz@...radead.org>, 
 Tejun Heo <tj@...nel.org>
Subject: Re: [PATCH v3 0/2] fix task_work interation with freezing


On Wed, 10 Jul 2024 18:58:16 +0100, Pavel Begunkov wrote:
> It's reported [1] that a task_work queued at a wrong time can prevent
> freezing and make the tasks to spin in get_signal() taking 100%
> of CPU. Patch 1 is a preparation. Patch 2 addresses the issue.
> 
> [1] https://github.com/systemd/systemd/issues/33626
> 
> v3: Slightly adjust commit messages
> v2: Move task_work_run() into do_freezer_trap()
>     Correct the Fixes tag is 2/2
> 
> [...]

Applied, thanks!

[1/2] io_uring/io-wq: limit retrying worker initialisation
      commit: 0453aad676ff99787124b9b3af4a5f59fbe808e2
[2/2] kernel: rerun task_work while freezing in get_signal()
      commit: 943ad0b62e3c21f324c4884caa6cb4a871bca05c

Best regards,
-- 
Jens Axboe