From: Pavel Emelyanov <xemul@parallels.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David Miller <davem@davemloft.net>, Mel Gorman <mgorman@suse.de>,
Linux Netdev List <netdev@vger.kernel.org>,
stable@kernel.org, Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Subject: Re: [PATCH] skb: Propagate pfmemalloc on skb from head page only
Date: Thu, 14 Mar 2013 18:36:05 +0400 [thread overview]
Message-ID: <5141E055.9000309@parallels.com> (raw)
In-Reply-To: <1363271649.29475.18.camel@edumazet-glaptop>
On 03/14/2013 06:34 PM, Eric Dumazet wrote:
> On Thu, 2013-03-14 at 18:23 +0400, Pavel Emelyanov wrote:
>
>> Presumably you're right, but I don't understand how :( In order to trigger
>> this, we should have a huge page, that gets linked to an skb _before_ it
>> enters the TCP receive path. How can this happen when doing sendmsg/recvmsg?
>
> Not only huge pages.
>
> network now uses order-3 pages in both transmit and receive paths.
Ah, indeed! Thanks, Eric.
next prev parent reply other threads:[~2013-03-14 14:37 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-14 13:29 [PATCH] skb: Propagate pfmemalloc on skb from head page only Pavel Emelyanov
2013-03-14 14:16 ` Eric Dumazet
2013-03-14 14:23 ` Pavel Emelyanov
2013-03-14 14:34 ` Eric Dumazet
2013-03-14 14:36 ` Pavel Emelyanov [this message]
2013-03-14 15:54 ` David Miller
2013-03-14 14:28 ` Mel Gorman
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