linux-kernel - Re: [PATCH] vmscan: bail out of page reclaim after swap_cluster

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Date:	Wed, 26 Nov 2008 11:24:52 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Rik van Riel <riel@...hat.com>
Cc:	kosaki.motohiro@...fujitsu.com, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, mel@....ul.ie,
	akpm@...ux-foundation.org
Subject: Re: [PATCH] vmscan: bail out of page reclaim after swap_cluster_max pages

> +		/*
> +		 * On large memory systems, scan >> priority can become
> +		 * really large. This is fine for the starting priority;
> +		 * we want to put equal scanning pressure on each zone.
> +		 * However, if the VM has a harder time of freeing pages,
> +		 * with multiple processes reclaiming pages, the total
> +		 * freeing target can get unreasonably large.
> +		 */
> +		if (sc->nr_reclaimed > sc->swap_cluster_max &&
> +			sc->priority < DEF_PRIORITY && !current_is_kswapd())
> +			break;

typo.
this patch can't compile.

---
 mm/vmscan.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: b/mm/vmscan.c
===================================================================
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1469,7 +1469,7 @@ static void shrink_zone(int priority, st
 		 * freeing target can get unreasonably large.
 		 */
 		if (sc->nr_reclaimed > sc->swap_cluster_max &&
-		    sc->priority < DEF_PRIORITY && !current_is_kswapd())
+		    priority < DEF_PRIORITY && !current_is_kswapd())
 			break;
 	}
 


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