Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757380Ab1F2Rkn (ORCPT ); Wed, 29 Jun 2011 13:40:43 -0400 Received: from rcsinet10.oracle.com ([148.87.113.121]:41579 "EHLO rcsinet10.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753872Ab1F2Rkm (ORCPT ); Wed, 29 Jun 2011 13:40:42 -0400 Message-ID: <4E0B6371.3000104@oracle.com> Date: Wed, 29 Jun 2011 10:40:01 -0700 From: Sunil Mushran User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.17) Gecko/20110516 Lightning/1.0b2 Thunderbird/3.1.10 MIME-Version: 1.0 To: Christoph Hellwig CC: P?draig Brady , Dave Chinner , Josef Bacik , linux-fsdevel@vger.kernel.org, viro@ZenIV.linux.org.uk, linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org, xfs@oss.sgi.com Subject: Re: [PATCH] xfstests 255: add a seek_data/seek_hole tester References: <1309275199-10801-1-git-send-email-josef@redhat.com> <1309275199-10801-5-git-send-email-josef@redhat.com> <20110629065306.GC1026@dastard> <20110629074021.GA26086@infradead.org> <4E0B019E.8080800@draigBrady.com> <4E0B60DE.50908@oracle.com> <20110629173648.GA22293@infradead.org> In-Reply-To: <20110629173648.GA22293@infradead.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Source-IP: rtcsinet21.oracle.com [66.248.204.29] X-CT-RefId: str=0001.0A090203.4E0B638B.0121:SCFSTAT5015188,ss=1,re=-4.000,fgs=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 796 Lines: 16 On 06/29/2011 10:36 AM, Christoph Hellwig wrote: > On Wed, Jun 29, 2011 at 10:29:02AM -0700, Sunil Mushran wrote: >> I'm not too sure about that. Atleast not enabled by default. Most users >> use cp to backup data. Not empty space. In this case, this empty extent >> may not even be de-dupable. >> >> Frankly I'd be happier of cp started to exploited fallocate() to create larger >> extents before copying data into them. Atleast for the large files. > That's what delayed allocation is for. A feature fewer file systems support than fallocate(). ;) -- 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/