Re: zswap z3fold + memory offline = infinite loop

[Qian Cai]

On Wed, May 20, 2020 at 10:23:38AM +0200, Vitaly Wool wrote:
> On Tue, May 19, 2020 at 5:50 AM Qian Cai <cai@xxxxxx> wrote:
> <snip>
> >
> > >
> > > Removing that check in ->isolate() is not a big deal, but ->migratepage() shall not allow actual migration anyway if there are mapped objects.
> >
> > Is that worse than an endless loop here?
> 
> Well, let's figure if there really has to be an endless loop. Would
> you mind retesting with
> https://marc.info/?l=linux-mm&m=158996286816704&w=2?

The patch does not help. Running the reproducer the second time would still
trigger the looping.