Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755262AbZKKHmm (ORCPT ); Wed, 11 Nov 2009 02:42:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753642AbZKKHml (ORCPT ); Wed, 11 Nov 2009 02:42:41 -0500 Received: from srv5.dvmed.net ([207.36.208.214]:51712 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753376AbZKKHml (ORCPT ); Wed, 11 Nov 2009 02:42:41 -0500 Message-ID: <4AFA6AEF.5060306@garzik.org> Date: Wed, 11 Nov 2009 02:42:39 -0500 From: Jeff Garzik User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.4pre) Gecko/20091014 Fedora/3.0-2.8.b4.fc11 Thunderbird/3.0b4 MIME-Version: 1.0 To: Arjan van de Ven CC: Wu Fengguang , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Christoph Hellwig , Al Viro , mingo@elte.hu, Frederic Weisbecker , auke-jan.h.kok@intel.com Subject: Re: [PATCH] vfs: Add a trace point in the mark_inode_dirty function References: <20091025225342.007138f5@infradead.org> <20091111020108.GA11423@localhost> <20091110223456.01ef355f@infradead.org> In-Reply-To: <20091110223456.01ef355f@infradead.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -4.4 (----) X-Spam-Report: SpamAssassin version 3.2.5 on srv5.dvmed.net summary: Content analysis details: (-4.4 points, 5.0 required) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 769 Lines: 20 On 11/11/2009 01:34 AM, Arjan van de Ven wrote: > Wu Fengguang wrote: >> Maybe this is enough for POWERTOP, however for general use, the dirty >> type(data/metadata) and inode number may be valuable to some users? > > what can a user do with an inode number???? Inode numbers have always been visible to userspace... IIRC, tar(1) uses the st_ino member of struct stat to detect hard links in certain cases. ls(1) displays inode numbers with -i, find(1) looks for them with -inum, ... Jeff -- 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/