From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rick Jones Subject: Re: tainted warnings with tcp splicing in 3.7.1 Date: Thu, 10 Jan 2013 10:49:17 -0800 Message-ID: <50EF0D2D.3040700@hp.com> References: <1357750898.27446.33.camel@edumazet-glaptop> <1357751372.27446.40.camel@edumazet-glaptop> <1357801149.27446.1142.camel@edumazet-glaptop> <20130110072136.GK9943@1wt.eu> <1357831787.27446.2168.camel@edumazet-glaptop> <1357834825.27446.2205.camel@edumazet-glaptop> <50EF06DD.7070207@hp.com> <1357843328.27446.2417.camel@edumazet-glaptop> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: Willy Tarreau , Christian Becker , David Miller , "netdev@vger.kernel.org" To: Eric Dumazet Return-path: Received: from g4t0017.houston.hp.com ([15.201.24.20]:39589 "EHLO g4t0017.houston.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753961Ab3AJStY (ORCPT ); Thu, 10 Jan 2013 13:49:24 -0500 In-Reply-To: <1357843328.27446.2417.camel@edumazet-glaptop> Sender: netdev-owner@vger.kernel.org List-ID: On 01/10/2013 10:42 AM, Eric Dumazet wrote: > Can we use zero copy for the sender as well (sendfile() or vmsplice()) ? Not at present. The TCP_SENDFILE test has not been "migrated" and there is no corresponding sendfile() test in the omni code, so the attempt to enable copy-avoidance won't "take." I'll take that as a feature request for netperf. rick