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Date: Mon, 5 May 2008 13:42:47 +0900
From: "minchan Kim" <barrioskmc@...il.com>
To: "KOSAKI Motohiro" <kosaki.motohiro@...fujitsu.com>
Cc: LKML <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>,
"Andrew Morton" <akpm@...ux-foundation.org>
Subject: Re: [-mm][PATCH 3/5] change function prototype of shrink_zone()
> -static unsigned long shrink_zone(int priority, struct zone *zone,
> - 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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