From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267567AbUBSUtI (ORCPT ); Thu, 19 Feb 2004 15:49:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267572AbUBSUtH (ORCPT ); Thu, 19 Feb 2004 15:49:07 -0500 Received: from mail.shareable.org ([81.29.64.88]:20096 "EHLO mail.shareable.org") by vger.kernel.org with ESMTP id S267567AbUBSUs6 (ORCPT ); Thu, 19 Feb 2004 15:48:58 -0500 Date: Thu, 19 Feb 2004 20:48:53 +0000 From: Jamie Lokier To: Linus Torvalds Cc: viro@parcelfarce.linux.theplanet.co.uk, Tridge , "H. Peter Anvin" , Kernel Mailing List Subject: Re: Eureka! (was Re: UTF-8 and case-insensitivity) Message-ID: <20040219204853.GA4619@mail.shareable.org> References: <20040219081027.GB4113@mail.shareable.org> <20040219163838.GC2308@mail.shareable.org> <20040219182948.GA3414@mail.shareable.org> <20040219200554.GE31035@parcelfarce.linux.theplanet.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Linus Torvalds wrote: > Comments? Yes: The slow part of my brain thinks dnotify with a new flag DN_IGNORE_SELF, meaning don't notify for things done by the process which is watching, would provide equivalent functionality. That is: Samba looks up a name: 1. Look up cache entry in Samba's cache; fails. 2. Try exact name; fails. 3. Open directory. 4. Register dnotify (DN_IGNORE_SELF | DN_CREATE | DN_RENAME | DN_DELETE). 5. readdir(); no case-insensitive match. 6. Stores negative cache entry in Samba. Future lookups just succeed in Samba's cache. Negative cache entries are simply invalidated whenever a dnotify is received for that directory. Samba already maintains a cache for positive entries, so this would be very little logic to add. In what way is your two bit proposal better? - Jamie