Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756191Ab0HCNY6 (ORCPT ); Tue, 3 Aug 2010 09:24:58 -0400 Received: from mx1.redhat.com ([209.132.183.28]:46122 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752952Ab0HCNY5 (ORCPT ); Tue, 3 Aug 2010 09:24:57 -0400 Message-ID: <4C5818A1.9070102@redhat.com> Date: Tue, 03 Aug 2010 16:24:49 +0300 From: Avi Kivity User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.7) Gecko/20100720 Fedora/3.1.1-1.fc13 Lightning/1.0b2pre Thunderbird/3.1.1 MIME-Version: 1.0 To: tytso@mit.edu, Christoph Hellwig , Ric Wheeler , Mingming Cao , djwong@us.ibm.com, linux-ext4 , linux-kernel , Keith Mannthey , Mingming Cao Subject: Re: [RFC] ext4: Don't send extra barrier during fsync if there are no dirty pages. References: <20100429235102.GC15607@tux1.beaverton.ibm.com> <1272934667.2544.3.camel@mingming-laptop> <4BE02C45.6010608@redhat.com> <20100504154553.GA22777@infradead.org> <20100630124832.GA1333@thunk.org> In-Reply-To: <20100630124832.GA1333@thunk.org> 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 Content-Length: 739 Lines: 22 On 06/30/2010 03:48 PM, tytso@mit.edu wrote: > > I wonder if it's worthwhile to think about a new system call which > allows users to provide an array of fd's which are collectively should > be fsync'ed out at the same time. Otherwise, we end up issuing > multiple barrier operations in cases where the application needs to > do: > > fsync(control_fd); > fsync(data_fd); > The system call exists, it's called io_submit(). -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/