From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from zeniv.linux.org.uk ([195.92.253.2]:39560 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932340Ab1BXD6m (ORCPT ); Wed, 23 Feb 2011 22:58:42 -0500 Date: Thu, 24 Feb 2011 03:58:37 +0000 From: Al Viro To: Ian Kent Cc: Nick Piggin , Trond Myklebust , David Howells , Kernel Mailing List , linux-fsdevel , Linus Torvalds , Andrew Morton , Linux NFS Mailing List Subject: Re: [PATCH 0/3] Fixes for vfs-scale and vfs-automount Message-ID: <20110224035836.GS22723@ZenIV.linux.org.uk> References: <20110118040449.23109.33071.stgit@localhost6.localdomain6> <1295420817.3076.24.camel@perseus> <1297779902.13007.86.camel@perseus> <20110224015817.GQ22723@ZenIV.linux.org.uk> <1298516618.2916.20.camel@perseus> <20110224031439.GR22723@ZenIV.linux.org.uk> <1298518137.2916.35.camel@perseus> Content-Type: text/plain; charset=us-ascii In-Reply-To: <1298518137.2916.35.camel@perseus> Sender: linux-nfs-owner@vger.kernel.org List-ID: MIME-Version: 1.0 On Thu, Feb 24, 2011 at 11:28:57AM +0800, Ian Kent wrote: > Ha, I haven't even turned on my Ultrsparc 2 in months, it's only got an > old version of Solaris on it now anyway, ;) U60, with lenny (and mainline kernel) on it. Probably ought to upgrade to squeeze one of those days... It works, all right, but it's only 2-way, so reproducing would probably be harder. Plus the fun of building the tests themselves on somewhat different userland... Anyway, I wonder why you care about __d_lookup_rcu() and ->d_inode stability; d_mountpoint() _is_ stable at that point (we hold vfsmount_lock) and you don't seem to look at ->d_inode at all in RCU case. Note that ->d_automount() is never called in RCU case at all; nor is ->lookup() and friends, so you really only have ->d_manage() to cope with, what with autofs4 having no ->d_revalidate() anymore. BTW, Nick has moved to kernel.dk; whether he's still reachable there is a question, though - he seems to have disappeared since mid-January.