Re: [PATCH] hibernate: unlock swap bdev for writing when uswsusp is active

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On Tue, Apr 21, 2020 at 08:43:33AM -0700, Darrick J. Wong wrote:
> On Mon, Apr 20, 2020 at 08:52:55PM +0200, Domenico Andreoli wrote:
> > On Sun, Mar 01, 2020 at 10:35:36PM +0100, Rafael J. Wysocki wrote:
> > > On Sat, Feb 29, 2020 at 9:02 PM Domenico Andreoli <domenico.andreoli@xxxxxxxxx> wrote:
> > > >
> > > > Maybe user-space hibernation should be a separate option.
> > > 
> > > That actually is not a bad idea at all in my view.
> > 
> > I prepared a patch for this:
> > https://lore.kernel.org/linux-pm/20200413190843.044112674@xxxxxxxxx/
> 
> If you succeed in making uswsusp a kconfig option, can you amend the
> "!hibernation available()" test in blkdev_write_iter so that users of
> in-kernel hibernate are protected against userspace swap device
> scribbles, please?

Yes, that's the plan.

> 
> --D

Domenico

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