From: Rik van Riel <riel@redhat.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
safari-kernel@safari.iki.fi
Subject: Re: [PATCH] prevent kswapd from freeing excessive amounts of lowmem
Date: Thu, 06 Sep 2007 12:38:13 -0400 [thread overview]
Message-ID: <46E02CF5.3020301@redhat.com> (raw)
In-Reply-To: <20070905182305.e5d08acf.akpm@linux-foundation.org>
Andrew Morton wrote:
> I guess for a very small upper zone and a very large lower zone this could
> still put the scan balancing out of whack, fixable by a smarter version of
> "8*zone->pages_high" but it doesn't seem very likely that this will affect
> things much.
>
> Why doesn't direct reclaim need similar treatment?
Because we only go into the direct reclaim path once
every zone is at or below zone->pages_low, and the
direct reclaim path will exit once we have freed more
than swap_cluster_max pages.
--
Politics is the struggle between those who want to make their country
the best in the world, and those who believe it already is. Each group
calls the other unpatriotic.
next prev parent reply other threads:[~2007-09-06 16:38 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-05 23:01 [PATCH] prevent kswapd from freeing excessive amounts of lowmem Rik van Riel
2007-09-06 1:23 ` Andrew Morton
2007-09-06 16:38 ` Rik van Riel [this message]
2007-09-06 22:34 ` Andrew Morton
2007-09-06 22:47 ` Rik van Riel
2007-09-07 12:24 ` Pavel Machek
2007-09-08 20:20 ` Rik van Riel
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