On Wed, Nov 25, 2015 at 08:31:02PM +0000, Chris Wilson wrote:
> On Wed, Nov 25, 2015 at 02:06:10PM -0500, Johannes Weiner wrote:
> > On Wed, Nov 25, 2015 at 06:36:56PM +0000, Chris Wilson wrote:
> > > +static bool swap_available(void)
> > > +{
> > > + return total_swap_pages || frontswap_enabled;
> > > +}
> >
> > If you use get_nr_swap_pages() instead of total_swap_pages, this will
> > also stop scanning objects once the swap space is full. We do that in
> > the VM to stop scanning anonymous pages.
>
> Thanks. Would EXPORT_SYMBOL_GPL(nr_swap_pages) (or equivalent) be
> acceptable?
No opposition from me. Just please add a small comment that this is
for shrinkers with swappable objects.
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