>  -static unsigned long shrink_zone(int priority, struct zone *zone,
quoted text
>  -                               struct scan_control *sc)
>  +static int shrink_zone(int priority, struct zone *zone,
>  +                      struct scan_control *sc)
>   {
>         unsigned long nr_active;
>         unsigned long nr_inactive;
>  @@ -1236,8 +1239,9 @@ static unsigned long shrink_zone(int pri
>                 }
>         }
>
>  +       sc->nr_reclaimed += nr_reclaimed;
>         throttle_vm_writeout(sc->gfp_mask);
>  -       return nr_reclaimed;
>  +       return 0;
>   }

I am not sure this is right.
I might be wrong if this patch is depended on another patch.

As I see, shrink_zone always return 0 in your patch.

If it is right, I think that return value is useless. It is better
that we change function return type to "void"
Also, we have to change functions that call shrink_zone properly. ex)
balance_pgdat, __zone_reclaim
That functions still use number of shrink_zone's reclaim page

-- 
Thanks,
barrios
--
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