From: Andrew Morton <akpm@linux-foundation.org>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: David Rientjes <rientjes@google.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Mel Gorman <mel@csn.ul.ie>, LKML <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Christoph Lameter <cl@linux-foundation.org>
Subject: Re: [resend][PATCH 2/2] mm, mem-hotplug: update pcp->stat_threshold when memory hotplug occur
Date: Tue, 19 Oct 2010 19:22:29 -0700 [thread overview]
Message-ID: <20101019192229.bae83d9d.akpm@linux-foundation.org> (raw)
In-Reply-To: <20101020110132.1815.A69D9226@jp.fujitsu.com>
On Wed, 20 Oct 2010 11:07:33 +0900 (JST) KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> wrote:
> > > > @@ -5013,6 +5014,8 @@ int __meminit init_per_zone_wmark_min(void)
> > > > min_free_kbytes = 128;
> > > > if (min_free_kbytes > 65536)
> > > > min_free_kbytes = 65536;
> > > > +
> > > > + refresh_zone_stat_thresholds();
> > > > setup_per_zone_wmarks();
> > > > setup_per_zone_lowmem_reserve();
> > > > setup_per_zone_inactive_ratio();
> > >
> > > setup_per_zone_wmarks() could change the min and low watermarks for a zone
> > > when refresh_zone_stat_thresholds() would have used the old value.
> >
> > Indeed.
> >
> > I could make the obvious fix, but then what I'd have wouldn't be
> > sufficiently tested.
>
> Can we review this?
It's unclear what you mean?
The patches otherwise look OK to me, but it's pretty easy to make
mistakes in this area.
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next prev parent reply other threads:[~2010-10-20 2:22 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-19 5:08 [resend][PATCH 1/2] mm, mem-hotplug: recalculate lowmem_reserve " KOSAKI Motohiro
2010-10-19 5:09 ` [resend][PATCH 2/2] mm, mem-hotplug: update pcp->stat_threshold " KOSAKI Motohiro
2010-10-19 14:41 ` Christoph Lameter
2010-10-19 19:11 ` David Rientjes
2010-10-19 23:29 ` Andrew Morton
2010-10-20 2:07 ` KOSAKI Motohiro
2010-10-20 2:22 ` Andrew Morton [this message]
2010-10-20 2:35 ` KOSAKI Motohiro
2010-10-20 2:36 ` KOSAKI Motohiro
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