Re: [PATCH 1/3] mm, oom: rework oom detection

[Michal Hocko]

On Mon 04-04-16 11:23:43, Vladimir Davydov wrote:
> On Tue, Dec 15, 2015 at 07:19:44PM +0100, Michal Hocko wrote:
> ...
> > @@ -2592,17 +2589,10 @@ static bool shrink_zones(struct zonelist *zonelist, struct scan_control *sc)
> >  						&nr_soft_scanned);
> >  			sc->nr_reclaimed += nr_soft_reclaimed;
> >  			sc->nr_scanned += nr_soft_scanned;
> > -			if (nr_soft_reclaimed)
> > -				reclaimable = true;
> >  			/* need some check for avoid more shrink_zone() */
> >  		}
> >  
> > -		if (shrink_zone(zone, sc, zone_idx(zone) == classzone_idx))
> > -			reclaimable = true;
> > -
> > -		if (global_reclaim(sc) &&
> > -		    !reclaimable && zone_reclaimable(zone))
> > -			reclaimable = true;
> > +		shrink_zone(zone, sc, zone_idx(zone));
> 
> Shouldn't it be
> 
> 		shrink_zone(zone, sc, zone_idx(zone) == classzone_idx);
> 
> ?

I cannot remember the reason why I have removed it so it is more likely
this was unintentional. Thanks for catching this. I will fold it into
the original patch before I repost the full series (this week
hopefully).
-- 
Michal Hocko
SUSE Labs