From patchwork Mon Dec 1 16:46:56 2008 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Harald Arnesen X-Patchwork-Id: 11631 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by ozlabs.org (Postfix) with ESMTP id 48027DDD0B for ; Tue, 2 Dec 2008 03:47:16 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751388AbYLAQrE (ORCPT ); Mon, 1 Dec 2008 11:47:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751529AbYLAQrE (ORCPT ); Mon, 1 Dec 2008 11:47:04 -0500 Received: from ug-out-1314.google.com ([66.249.92.172]:40495 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751388AbYLAQrB (ORCPT ); Mon, 1 Dec 2008 11:47:01 -0500 Received: by ug-out-1314.google.com with SMTP id 39so2724227ugf.37 for ; Mon, 01 Dec 2008 08:47:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:to:cc:subject:date:message-id :user-agent:mime-version:content-type:from; bh=GzFBnveFMRgiSgeDt4O8pyteJaiDyG5T/Dey1sPn1MM=; b=hzfth+hi9ShgAB8V+qYLZPTJQMwNlVfyASSwPTux7Vvcw257TF3RzCHcD9U1bgKWyE c5kpmiW12FqCZwefow3BMwxuRmIU8nPqde/T7MVO97+pm+QkrhVdqBL4huVCxjVZMTpy R/V9X2yNdLVoHf6HtocU36D/wxNiV96c602cQ= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=to:cc:subject:date:message-id:user-agent:mime-version:content-type :from; b=EMeT0QK20sRFYr9YKM8/zHgzvMVZ8gYTBAMn0yu4BszFlwP/X4tv/vFOWziV1yi25h bhPBNzw4OFHNzcOa2q+URIwPwdrUUFChjOteribZ5wpBe6y9S0tYcn1xCW54mJkH466E 70NTxRRj69YidlC3XeZRUFhXO5Vmia3sCHARU= Received: by 10.210.63.6 with SMTP id l6mr12747120eba.185.1228150020752; Mon, 01 Dec 2008 08:47:00 -0800 (PST) Received: from basilikum.skogtun.org.skogtun.org (static148-162.adsl.no [83.243.148.162]) by mx.google.com with ESMTPS id 20sm6077241eyk.49.2008.12.01.08.46.58 (version=TLSv1/SSLv3 cipher=RC4-MD5); Mon, 01 Dec 2008 08:46:59 -0800 (PST) To: linux-kernel@vger.kernel.org Cc: linux-ext4@vger.kernel.org, tytso@mit.edu Subject: [ext4] Documentation patch Date: Mon, 01 Dec 2008 17:46:56 +0100 Message-ID: <8763m3u9kv.fsf@basilikum.skogtun.org> User-Agent: Gnus/5.110011 (No Gnus v0.11) Emacs/22.3 (gnu/linux) MIME-Version: 1.0 From: Harald Arnesen Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org My first patch, hope it goes through ok! Applies to 2.6.28-rc6-00184-gd9d060a. Compare ext4's journalling with anything but ext3's. These use the same journalling modes, most other Linux filesystems do only metadata journalling. Signed-off-by: Harald Arnesen ======================================================================== diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt index 174eaff..5bbe79e 100644 --- a/Documentation/filesystems/ext4.txt +++ b/Documentation/filesystems/ext4.txt @@ -61,7 +61,7 @@ Note: More extensive information for getting started with ext4 can be - When comparing performance with other filesystems, remember that ext3/4 by default offers higher data integrity guarantees than most. So when comparing with a metadata-only journalling filesystem, such - as ext3, use `mount -o data=writeback'. And you might as well use + as jfs or xfs, use `mount -o data=writeback'. And you might as well use `mount -o nobh' too along with it. Making the journal larger than the mke2fs default often helps performance with metadata-intensive workloads.