Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757329Ab1F2RhA (ORCPT ); Wed, 29 Jun 2011 13:37:00 -0400 Received: from 173-166-109-252-newengland.hfc.comcastbusiness.net ([173.166.109.252]:52998 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752279Ab1F2Rg4 (ORCPT ); Wed, 29 Jun 2011 13:36:56 -0400 Date: Wed, 29 Jun 2011 13:36:48 -0400 From: Christoph Hellwig To: Sunil Mushran Cc: P?draig Brady , Christoph Hellwig , 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 Message-ID: <20110629173648.GA22293@infradead.org> 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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4E0B60DE.50908@oracle.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 680 Lines: 14 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. -- 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/