From: Rik van Riel <riel@redhat.com>
To: Christian Ehrhardt <lk@c--e.de>
Cc: linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
linux-mm@kvack.org
Subject: Re: [PATCH] rmap: Fix Bugzilla Bug #5493
Date: Fri, 05 Mar 2010 09:10:53 -0500 [thread overview]
Message-ID: <4B9110ED.5000703@redhat.com> (raw)
In-Reply-To: <20100305093834.GG17078@lisa.in-ulm.de>
On 03/05/2010 04:38 AM, Christian Ehrhardt wrote:
>
> Hi,
>
> this patch fixes bugzilla Bug
>
> http://bugzilla.kernel.org/show_bug.cgi?id=5493
>
> This bug describes a search complexity failure in rmap if a single
> anon_vma has a huge number of vmas associated with it.
>
> The patch makes the vma prio tree code somewhat more reusable and then uses
> that to replace the linked list of vmas in an anon_vma with a prio_tree.
Your patch will not apply against a current -mm, because it
conflicts with my anon_vma linking patches (which attacks
another "rmap walks too many vmas" failure mode).
Please rediff your patch against the latest -mm tree.
WARNING: multiple messages have this Message-ID (diff)
From: Rik van Riel <riel@redhat.com>
To: Christian Ehrhardt <lk@c--e.de>
Cc: linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
linux-mm@kvack.org
Subject: Re: [PATCH] rmap: Fix Bugzilla Bug #5493
Date: Fri, 05 Mar 2010 09:10:53 -0500 [thread overview]
Message-ID: <4B9110ED.5000703@redhat.com> (raw)
In-Reply-To: <20100305093834.GG17078@lisa.in-ulm.de>
On 03/05/2010 04:38 AM, Christian Ehrhardt wrote:
>
> Hi,
>
> this patch fixes bugzilla Bug
>
> http://bugzilla.kernel.org/show_bug.cgi?id=5493
>
> This bug describes a search complexity failure in rmap if a single
> anon_vma has a huge number of vmas associated with it.
>
> The patch makes the vma prio tree code somewhat more reusable and then uses
> that to replace the linked list of vmas in an anon_vma with a prio_tree.
Your patch will not apply against a current -mm, because it
conflicts with my anon_vma linking patches (which attacks
another "rmap walks too many vmas" failure mode).
Please rediff your patch against the latest -mm tree.
--
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next prev parent reply other threads:[~2010-03-05 14:11 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-05 9:38 [PATCH] rmap: Fix Bugzilla Bug #5493 Christian Ehrhardt
2010-03-05 9:38 ` Christian Ehrhardt
2010-03-05 14:10 ` Rik van Riel [this message]
2010-03-05 14:10 ` Rik van Riel
2010-03-06 1:02 ` Christian Ehrhardt
2010-03-06 1:02 ` Christian Ehrhardt
2010-03-06 2:00 ` Johannes Weiner
2010-03-06 2:00 ` Johannes Weiner
2010-03-06 14:44 ` Christian Ehrhardt
2010-03-06 14:44 ` Christian Ehrhardt
2010-03-06 1:35 ` Kyle McMartin
2010-03-06 1:35 ` Kyle McMartin
2010-03-06 9:24 ` Mikael Pettersson
2010-03-06 9:24 ` Mikael Pettersson
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