From: Rik van Riel <riel@redhat.com>
To: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Cc: Daniel Phillips <phillips@google.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Indan Zupancic <indan@nul.nu>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org, David Miller <davem@davemloft.net>
Subject: Re: [RFC][PATCH 0/4] VM deadlock prevention -v4
Date: Mon, 14 Aug 2006 08:21:27 -0400 [thread overview]
Message-ID: <44E06AC7.6090301@redhat.com> (raw)
In-Reply-To: <20060814052015.GB1335@2ka.mipt.ru>
Evgeniy Polyakov wrote:
> On Sun, Aug 13, 2006 at 05:42:47PM -0700, Daniel Phillips (phillips@google.com) wrote:
>> As for sk_buff cow break, we need to look at which network paths do it
>> (netfilter obviously, probably others) and decide whether we just want
>> to declare that the feature breaks network block IO, or fix the feature
>> so it plays well with reserve accounting.
>
> I would suggest to consider skb cow (cloning) as a must.
That should not be any problem, since skb's (including cowed ones)
are short lived anyway. Allocating a little bit more memory is
fine when we have a guarantee that the memory will be freed again
shortly.
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next prev parent reply other threads:[~2006-08-14 12:21 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-12 14:14 Peter Zijlstra
2006-08-12 14:14 ` [RFC][PATCH 1/4] pfn_to_kaddr() for UML Peter Zijlstra
2006-08-12 14:14 ` [RFC][PATCH 2/4] SROG allocator Peter Zijlstra
2006-08-12 14:14 ` [RFC][PATCH 3/4] deadlock prevention core Peter Zijlstra
2006-08-12 14:41 ` Jeff Garzik
2006-08-12 15:06 ` rename *MEMALLOC flags (was: Re: [RFC][PATCH 3/4] deadlock prevention core) Peter Zijlstra
2006-08-12 15:28 ` Indan Zupancic
2006-08-12 15:34 ` Peter Zijlstra
2006-08-14 0:06 ` rename *MEMALLOC flags Daniel Phillips
2006-08-14 1:00 ` Paul Jackson
2006-08-14 3:42 ` Nick Piggin
2006-08-12 17:31 ` [RFC][PATCH 3/4] deadlock prevention core Indan Zupancic
2006-08-12 17:44 ` Peter Zijlstra
2006-08-12 17:54 ` Indan Zupancic
2006-08-12 18:08 ` Peter Zijlstra
2006-08-12 18:32 ` Indan Zupancic
2006-08-12 18:47 ` Peter Zijlstra
2006-08-12 19:45 ` Indan Zupancic
2006-08-12 14:14 ` [RFC][PATCH 4/4] deadlock prevention for NBD Peter Zijlstra
2006-08-24 14:43 ` Pavel Machek
2006-08-12 16:51 ` [RFC][PATCH 0/4] VM deadlock prevention -v4 Indan Zupancic
2006-08-12 17:33 ` Peter Zijlstra
2006-08-12 18:16 ` Indan Zupancic
2006-08-12 18:54 ` Peter Zijlstra
2006-08-12 20:05 ` Indan Zupancic
2006-08-14 0:42 ` Daniel Phillips
2006-08-14 5:20 ` Evgeniy Polyakov
2006-08-14 12:21 ` Rik van Riel [this message]
2006-08-14 12:51 ` Herbert Xu
2006-08-14 14:22 ` Rik van Riel
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