Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756865AbZKKH4e (ORCPT ); Wed, 11 Nov 2009 02:56:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756777AbZKKH4b (ORCPT ); Wed, 11 Nov 2009 02:56:31 -0500 Received: from srv5.dvmed.net ([207.36.208.214]:45914 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756701AbZKKH43 (ORCPT ); Wed, 11 Nov 2009 02:56:29 -0500 Message-ID: <4AFA6E2D.7010709@garzik.org> Date: Wed, 11 Nov 2009 02:56:29 -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: Ingo Molnar CC: Arjan van de Ven , Wu Fengguang , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Christoph Hellwig , Al Viro , 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> <4AFA6AEF.5060306@garzik.org> <20091111074542.GB25132@elte.hu> In-Reply-To: <20091111074542.GB25132@elte.hu> 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: 1016 Lines: 29 On 11/11/2009 02:45 AM, Ingo Molnar wrote: > > * Jeff Garzik wrote: > >> 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, ... > > Without an inode->vfs-name lookup/matching service it's of limited > utility Look in the quoted text for one such service... :) 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/