From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030573AbXDLRTA (ORCPT ); Thu, 12 Apr 2007 13:19:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030574AbXDLRS7 (ORCPT ); Thu, 12 Apr 2007 13:18:59 -0400 Received: from mail.fieldses.org ([66.93.2.214]:52244 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030573AbXDLRS7 (ORCPT ); Thu, 12 Apr 2007 13:18:59 -0400 Date: Thu, 12 Apr 2007 13:18:31 -0400 To: Theodore Tso , Neil Brown , =?iso-8859-1?Q?J=F6rn?= Engel , "H. Peter Anvin" , Christoph Hellwig , Ulrich Drepper , Linux Kernel Mailing List Subject: Re: If not readdir() then what? Message-ID: <20070412171831.GD3028@fieldses.org> References: <46193048.6000606@zytor.com> <20070408184129.GA20871@lazybastard.org> <17947.65165.569482.976343@notabene.brown> <20070411144252.GB17778@thunk.org> <17949.25061.739035.688232@notabene.brown> <20070411232224.GF17778@thunk.org> <17949.36737.701327.104172@notabene.brown> <20070412023712.GA8175@lazybastard.org> <17949.51797.386833.917451@notabene.brown> <20070412122116.GD28148@thunk.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070412122116.GD28148@thunk.org> User-Agent: Mutt/1.5.13 (2006-08-11) From: "J. Bruce Fields" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Apr 12, 2007 at 08:21:16AM -0400, Theodore Tso wrote: > Again, compared to a directory fd cache, what you're proposing a huge > hit to the filesystem, and at the moment, given that telldir/seekdir > is rarely used by everyone else, it's mainly NFS which is the main bad > actor here by insisting on the use of a small 31/63-bit cookie as a > condition of protocol correctness. If we want to get bigger cookies into the protocol, then the sooner we start working on that the better.... How big is big enough? And is a larger cookie sufficient on its own? --b.