From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752806AbYLRTL7 (ORCPT ); Thu, 18 Dec 2008 14:11:59 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752006AbYLRTLo (ORCPT ); Thu, 18 Dec 2008 14:11:44 -0500 Received: from poll.devit.com ([216.165.189.132]:59753 "EHLO mx0.devit.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751380AbYLRTLn (ORCPT ); Thu, 18 Dec 2008 14:11:43 -0500 X-Greylist: delayed 1690 seconds by postgrey-1.27 at vger.kernel.org; Thu, 18 Dec 2008 14:11:43 EST Message-ID: <494A99EF.6070400@flurg.com> Date: Thu, 18 Dec 2008 12:43:59 -0600 From: "David M. Lloyd" User-Agent: Thunderbird 2.0.0.18 (X11/20081119) MIME-Version: 1.0 To: Vladislav Bolkhovitin Cc: linux-mm@kvack.org, Christoph Hellwig , James Bottomley , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, scst-devel@lists.sourceforge.net, Bart Van Assche , netdev@vger.kernel.org Subject: Re: [RFC]: Support for zero-copy TCP transmit of user space data References: <494009D7.4020602@vlnb.net> <494012C4.7090304@vlnb.net> <20081210214500.GA24212@ioremap.net> <4941590F.3070705@vlnb.net> <1229022734.3266.67.camel@localhost.localdomain> <4942BAB8.4050007@vlnb.net> <1229110673.3262.94.camel@localhost.localdomain> <49469ADB.6010709@vlnb.net> <20081215231801.GA27168@infradead.org> <4947FA1C.2090509@vlnb.net> <494A97DD.7080503@vlnb.net> In-Reply-To: <494A97DD.7080503@vlnb.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/18/2008 12:35 PM, Vladislav Bolkhovitin wrote: > An iSCSI target driver iSCSI-SCST was a part of the patchset > (http://lkml.org/lkml/2008/12/10/293). For it a nice optimization to > have TCP zero-copy transmit of user space data was implemented. Patch, > implementing this optimization was also sent in the patchset, see > http://lkml.org/lkml/2008/12/10/296. I'm probably ignorant of about 90% of the context here, but isn't this the sort of problem that was supposed to have been solved by vmsplice(2)? - DML From mboxrd@z Thu Jan 1 00:00:00 1970 From: "David M. Lloyd" Subject: Re: [RFC]: Support for zero-copy TCP transmit of user space data Date: Thu, 18 Dec 2008 12:43:59 -0600 Message-ID: <494A99EF.6070400@flurg.com> References: <494009D7.4020602@vlnb.net> <494012C4.7090304@vlnb.net> <20081210214500.GA24212@ioremap.net> <4941590F.3070705@vlnb.net> <1229022734.3266.67.camel@localhost.localdomain> <4942BAB8.4050007@vlnb.net> <1229110673.3262.94.camel@localhost.localdomain> <49469ADB.6010709@vlnb.net> <20081215231801.GA27168@infradead.org> <4947FA1C.2090509@vlnb.net> <494A97DD.7080503@vlnb.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: linux-mm@kvack.org, Christoph Hellwig , James Bottomley , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, scst-devel@lists.sourceforge.net, Bart Van Assche , netdev@vger.kernel.org To: Vladislav Bolkhovitin Return-path: In-Reply-To: <494A97DD.7080503@vlnb.net> Sender: owner-linux-mm@kvack.org List-Id: netdev.vger.kernel.org On 12/18/2008 12:35 PM, Vladislav Bolkhovitin wrote: > An iSCSI target driver iSCSI-SCST was a part of the patchset > (http://lkml.org/lkml/2008/12/10/293). For it a nice optimization to > have TCP zero-copy transmit of user space data was implemented. Patch, > implementing this optimization was also sent in the patchset, see > http://lkml.org/lkml/2008/12/10/296. I'm probably ignorant of about 90% of the context here, but isn't this the sort of problem that was supposed to have been solved by vmsplice(2)? - DML -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org