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

[Qian Cai]

On Wed, 2020-12-02 at 15:15 -0800, Andrew Morton wrote:
> 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?

Yes, it did trigger a might_sleep() warning.