From: Rik van Riel <riel@redhat.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH -mm] vmscan: bail out of page reclaim after swap_cluster_max pages
Date: Mon, 24 Nov 2008 14:18:28 -0500 [thread overview]
Message-ID: <492AFE04.10404@redhat.com> (raw)
In-Reply-To: <2f11576a0811241112p494b28a6p720da1d60ac3438c@mail.gmail.com>
KOSAKI Motohiro wrote:
> 1. reclaim 32 page from ZONE_HIGHMEM
> 2. reclaim 32 page from ZONE_NORMAL
> 3. reclaim 32 page from ZONE_DMA
> 4. exit reclaim
> 5. another task call page alloc and it cause try_to_free_pages()
> 6. reclaim 32 page from ZONE_HIGHMEM
> 7. reclaim 32 page from ZONE_NORMAL
> 8. reclaim 32 page from ZONE_DMA
>> - have direct reclaim tasks continue when priority == DEF_PRIORITY
>
> disagreed.
> it cause above bad scenario, I think.
I think I did not explain it clearly. Let me illustrate
with a new patch. (one moment :))
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next prev parent reply other threads:[~2008-11-24 19:18 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-13 22:12 Rik van Riel
2008-11-14 0:51 ` KOSAKI Motohiro
2008-11-14 3:27 ` Andrew Morton
2008-11-14 14:36 ` Rik van Riel
2008-11-14 17:18 ` Andrew Morton
2008-11-16 7:43 ` KOSAKI Motohiro
2008-11-16 7:54 ` Andrew Morton
2008-11-16 7:56 ` KOSAKI Motohiro
2008-11-16 8:02 ` Andrew Morton
2008-11-22 10:22 ` KOSAKI Motohiro
2008-11-22 16:57 ` Rik van Riel
2008-11-24 19:12 ` KOSAKI Motohiro
2008-11-24 19:18 ` Rik van Riel [this message]
2008-11-16 7:38 ` KOSAKI Motohiro
2008-11-17 0:38 ` KAMEZAWA Hiroyuki
2008-11-17 3:43 ` Balbir Singh
2008-11-19 16:54 ` Mel Gorman
2008-11-21 11:59 ` Petr Tesarik
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