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

[Andrew Morton]

On Wed,  2 Dec 2020 10:15:49 -0500 Qian Cai <qcai@xxxxxxxxxx> 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??)