Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753607AbZF3BCq (ORCPT ); Mon, 29 Jun 2009 21:02:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751680AbZF3BCi (ORCPT ); Mon, 29 Jun 2009 21:02:38 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:37506 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751486AbZF3BCi (ORCPT ); Mon, 29 Jun 2009 21:02:38 -0400 Date: Mon, 29 Jun 2009 18:02:09 -0700 (PDT) From: Linus Torvalds X-X-Sender: torvalds@localhost.localdomain To: Jeremy Kerr cc: Eric Paris , Al Viro , Stephen Rothwell , Benjamin Herrenschmidt , Linux Kernel Mailing List Subject: Re: [GIT PULL] notification tree - fsnotify assumes incorrectly positive parent dentry In-Reply-To: <200906300846.30625.jk@ozlabs.org> Message-ID: References: <1246305712.754.292.camel@dhcp235-23.rdu.redhat.com> <200906300846.30625.jk@ozlabs.org> User-Agent: Alpine 2.01 (LFD 1184 2008-12-16) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1308 Lines: 32 On Tue, 30 Jun 2009, Jeremy Kerr wrote: > > > Hmm. It does sound like a reasonable assumption, though. Maybe spufs > > should be fixed to have an inode for all directories? > > We have inodes for all directories, it's just the order which we set > things up. When a new 'spu context' (ie, a directory with a bunch of > files) is created, we add the parent dentry, populate it with files > (positive dentries), then instantiate the parent. > > There's no specific need to do it in this order, it just makes the code > a little simpler - we just 'stitch the parent in' once everything else > has completed successfully, so less stuff to do in the error path. > > > A NULL d_inode means that something is a negative dentry, and a > > negative dentry shouldn't have children. > > OK. If this is a general invariant, then I'll get a change to spufs > going to do the setup in the right order. Hmm. I doubt it matters a ton, but if it's easy to change it so that it populates the parent inode first, I think that would be a good thing. Thanks, Linus -- 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/