Re: [PATCH] Revert "mm: remove __GFP_NO_KSWAPD"

Andrew Morton
2012-11-16T19:51:32Z

On Fri, 16 Nov 2012 14:14:47 -0500
Josh Boyer <jwboyer@gmail.com> wrote:

> > The temptation is to supply a patch that checks if kswapd was woken for
> > THP and if so ignore pgdat->kswapd_max_order but it'll be a hack and not
> > backed up by proper testing. As 3.7 is very close to release and this is
> > not a bug we should release with, a safer path is to revert "mm: remove
> > __GFP_NO_KSWAPD" for now and revisit it with the view to ironing out the
> > balance_pgdat() logic in general.
> >
> > Signed-off-by: Mel Gorman <mgorman@suse.de>
>
> Does anyone know if this is queued to go into 3.7 somewhere? I looked
> a bit and can't find it in a tree. We have a few reports of Fedora
> rawhide users hitting this.

Still thinking about it. We're reverting quite a lot of material
lately.
mm-revert-mm-vmscan-scale-number-of-pages-reclaimed-by-reclaim-compaction-based-on-failures.patch
and revert-mm-fix-up-zone-present-pages.patch are queued for 3.7.

I'll toss this one in there as well, but I can't say I'm feeling
terribly confident. How is Valdis's machine nowadays?