From: Avi Kivity <avi@redhat.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Ying Han <yinghan@google.com>, Michal Hocko <mhocko@suse.cz>,
Johannes Weiner <hannes@cmpxchg.org>, Mel Gorman <mel@csn.ul.ie>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Rik van Riel <riel@redhat.com>, Hillf Danton <dhillf@gmail.com>,
Hugh Dickins <hughd@google.com>,
Dan Magenheimer <dan.magenheimer@oracle.com>,
linux-mm@kvack.org, kvm@vger.kernel.org,
Marcelo Tosatti <mtosatti@redhat.com>
Subject: Re: [PATCH] kvm: don't call mmu_shrinker w/o used_mmu_pages
Date: Sun, 22 Apr 2012 12:35:21 +0300 [thread overview]
Message-ID: <4F93D0D9.3050901@redhat.com> (raw)
In-Reply-To: <20120420151143.433c514e.akpm@linux-foundation.org>
On 04/21/2012 01:11 AM, Andrew Morton wrote:
> On Fri, 13 Apr 2012 15:38:41 -0700
> Ying Han <yinghan@google.com> wrote:
>
> > The mmu_shrink() is heavy by itself by iterating all kvms and holding
> > the kvm_lock. spotted the code w/ Rik during LSF, and it turns out we
> > don't need to call the shrinker if nothing to shrink.
> >
>
> We should probably tell the kvm maintainers about this ;)
>
Andrew, I see you added this to -mm. First, it should go through the
kvm tree. Second, unless we misunderstand something, the patch does
nothing, so I don't think it should be added at all.
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next prev parent reply other threads:[~2012-04-22 9:35 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-13 22:38 [PATCH] kvm: don't call mmu_shrinker w/o used_mmu_pages Ying Han
2012-04-14 11:44 ` Hillf Danton
2012-04-16 16:43 ` Ying Han
2012-04-20 22:11 ` Andrew Morton
2012-04-20 22:11 ` Andrew Morton
2012-04-20 22:53 ` Rik van Riel
2012-04-20 23:07 ` Ying Han
2012-04-21 1:56 ` Takuya Yoshikawa
2012-04-21 2:15 ` Mike Waychison
2012-04-21 2:29 ` Takuya Yoshikawa
2012-04-21 2:29 ` Takuya Yoshikawa
2012-04-21 2:48 ` Mike Waychison
2012-04-21 2:48 ` Mike Waychison
2012-04-22 9:16 ` Avi Kivity
2012-04-22 19:05 ` Eric Northup
2012-04-23 8:37 ` Avi Kivity
2012-04-22 9:04 ` Avi Kivity
2012-04-22 9:35 ` Avi Kivity [this message]
2012-04-23 16:40 ` Ying Han
2012-04-23 16:48 ` Rik van Riel
2012-04-23 16:57 ` Avi Kivity
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