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From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: MinChan Kim <minchan.kim@gmail.com>
Cc: kosaki.motohiro@jp.fujitsu.com,
	Johannes Weiner <hannes@cmpxchg.org>,
	Rik van Riel <riel@redhat.com>, "Rafael J. Wysocki" <rjw@sisk.pl>,
	William Lee Irwin III <wli@movementarian.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH] shrink_all_memory() use sc.nr_reclaimed
Date: Wed, 11 Feb 2009 21:58:59 +0900 (JST)	[thread overview]
Message-ID: <20090211215654.C3D6.KOSAKI.MOTOHIRO@jp.fujitsu.com> (raw)
In-Reply-To: <20090211214324.6a9cfb58.minchan.kim@barrios-desktop>

> Hmm, I think old bale-out code is right. 
> In shrink_all_memory, As more reclaiming with pass progressing, 
> the smaller nr_to_scan is. The nr_to_scan is the number of page shrinking which
> user want. 
> The shrink_all_zones have to reclaim nr_to_scan's page by doing best effort.
> So, If you use accumulation of reclaim, it can break bale-out in shrink_all_zones.

you are right. thanks.
shrink_all_zones()'s nr_pages != shrink_all_memory()'s nr_pages.
(I don't like this misleading variable name scheme ;)


> I mean here.
> 
> '
>               NR_LRU_BASE + l)); 
>         ret += shrink_list(l, nr_to_scan, zone,
>                 sc, prio);
>         if (ret >= nr_pages)
>           return ret; 
>       }    
> '
> 
> I have to make patch again so that it will keep on old bale-out behavior. 

Sure.
thanks.



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  reply	other threads:[~2009-02-11 12:59 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-02-09 22:24 [RFC] vmscan: initialize sc->nr_reclaimed in do_try_to_free_pages() Johannes Weiner
2009-02-10 10:47 ` MinChan Kim
2009-02-10 11:43   ` KOSAKI Motohiro
2009-02-10 12:03     ` MinChan Kim
2009-02-10 12:06       ` KOSAKI Motohiro
2009-02-10 12:31         ` MinChan Kim
2009-02-10 12:35           ` KOSAKI Motohiro
2009-02-10 12:40             ` MinChan Kim
2009-02-10 12:58               ` [PATCH] vmscan: initialize sc->nr_reclaimed properly take2 KOSAKI Motohiro
2009-02-10 13:00                 ` [PATCH] shrink_all_memory() use sc.nr_reclaimed KOSAKI Motohiro
2009-02-10 16:20                   ` Johannes Weiner
2009-02-10 20:41                     ` KOSAKI Motohiro
2009-02-11  0:37                       ` MinChan Kim
2009-02-11 11:50                         ` KOSAKI Motohiro
2009-02-11 12:43                           ` MinChan Kim
2009-02-11 12:58                             ` KOSAKI Motohiro [this message]
2009-02-11 13:03                               ` KOSAKI Motohiro
2009-02-10 16:09                 ` [PATCH] vmscan: initialize sc->nr_reclaimed properly take2 Johannes Weiner
2009-02-10 22:06                 ` Andrew Morton
2009-02-10 22:15                   ` Johannes Weiner
2009-02-11 10:52                   ` KOSAKI Motohiro
2009-02-10 22:16 ` [RFC] vmscan: initialize sc->nr_reclaimed in do_try_to_free_pages() Andrew Morton

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