linux-kernel - Re: [PATCH -mm 07/16] second chance replacement for anonymous pages

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Message-Id: <20080528195925.9CD3.KOSAKI.MOTOHIRO@jp.fujitsu.com>
Date:	Wed, 28 May 2008 20:03:11 +0900
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Rik van Riel <riel@...hat.com>
Cc:	kosaki.motohiro@...fujitsu.com, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Lee Schermerhorn <lee.schermerhorn@...com>
Subject: Re: [PATCH -mm 07/16] second chance replacement for anonymous pages

> @@ -1129,7 +1141,11 @@ static unsigned long shrink_list(enum lr
>  {
>  	int file = is_file_lru(lru);
>  
> -	if (lru == LRU_ACTIVE_ANON || lru == LRU_ACTIVE_FILE) {
> +	if (lru == LRU_ACTIVE_FILE) {
> +		shrink_active_list(nr_to_scan, zone, sc, priority, file);
> +		return 0;
> +	}
> +	if (lru == LRU_ACTIVE_ANON && inactive_anon_low(zone)) {
>  		shrink_active_list(nr_to_scan, zone, sc, priority, file);
>  		return 0;
>  	}

I made memcgroup noreclaim infrastructure today.
and, I found slightly odd behaviour.

this condition increase OOM, because prevent active -> inactive moving 
even though non global reclaim.


Download attachment "rvr-07.1-kosaki-memcg-shrink_list.patch" of type "application/octet-stream" (772 bytes)