linux-kernel - Re: [PATCH] mm/swapfile: Do not sleep with a spin lock held

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Message-Id: <20201202151556.01077710acf79f6fd2ba8287@linux-foundation.org>
Date:   Wed, 2 Dec 2020 15:15:56 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Qian Cai <qcai@...hat.com>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm/swapfile: Do not sleep with a spin lock held

On Wed,  2 Dec 2020 10:15:49 -0500 Qian Cai <qcai@...hat.com> wrote:

> We can't call kvfree() with a spin lock held, so defer it.
> 

Fixes: 873d7bcfd066 ("mm/swapfile.c: use kvzalloc for swap_info_struct allocatio
n")

Do you think it's worth a cc:stable?  IOW, is this known to ever
produce a warning?

(If not, why did we need 873d7bcfd066??)