On Wed, 12 Sep 2007, Mel Gorman wrote:

> -                     z++)
> -             ;
> +     if (likely(nodes == NULL))
> +             for (; zonelist_zone_idx(z) > highest_zoneidx;
> +                             z++)
> +                     ;
> +     else
> +             for (; zonelist_zone_idx(z) > highest_zoneidx ||
> +                             (z->zone && !zref_in_nodemask(z, nodes));
> +                             z++)
> +                     ;
>  

Minor nitpick here: "for (;" should become "for ( ;" to have correct 
whitespace. However, it would be clearer to use a while here.

while (zonelist_zone_idx(z)) > highest_zoneidx)
                z++;

etc.
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