On Thu, 2 Aug 2007 13:45:23 -0700 (PDT) Christoph Lameter <[email protected]> wrote:
> On Thu, 2 Aug 2007, Mel Gorman wrote:
>
> > +#ifdef CONFIG_NUMA
> > +/*
> > + * Only custom zonelists like MPOL_BIND need to be filtered as part of
> > + * policies. As described in the comment for struct zonelist_cache, these
> > + * zonelists will not have a zlcache so zlcache_ptr will not be set. Use
> > + * that to determine if the zonelists needs to be filtered or not.
> > + */
> > +static inline int alloc_should_filter_zonelist(struct zonelist *zonelist)
> > +{
> > + return !zonelist->zlcache_ptr;
> > +}
>
> I guess Paul needs to have a look at this one.
Which Paul?
> Otherwise
>
> Acked-by: Christoph Lameter <[email protected]>
>
> > @@ -1166,6 +1167,18 @@ zonelist_scan:
> > z = zonelist->zones;
> >
> > do {
> > + /*
> > + * In NUMA, this could be a policy zonelist which contains
> > + * zones that may not be allowed by the current gfp_mask.
> > + * Check the zone is allowed by the current flags
> > + */
> > + if (unlikely(alloc_should_filter_zonelist(zonelist))) {
> > + if (highest_zoneidx == -1)
> > + highest_zoneidx = gfp_zone(gfp_mask);
> > + if (zone_idx(*z) > highest_zoneidx)
> > + continue;
> > + }
> > +
> > if (NUMA_BUILD && zlc_active &&
>
> Hotpath. Sigh.
-
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