Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761897AbYFSQcd (ORCPT ); Thu, 19 Jun 2008 12:32:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761728AbYFSQcX (ORCPT ); Thu, 19 Jun 2008 12:32:23 -0400 Received: from e5.ny.us.ibm.com ([32.97.182.145]:42715 "EHLO e5.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761671AbYFSQcW (ORCPT ); Thu, 19 Jun 2008 12:32:22 -0400 Subject: Re: [PATCH 01/11] sysfs: Support for preventing unmounts. From: Dave Hansen To: "Eric W. Biederman" Cc: Tejun Heo , Greg Kroah-Hartman , linux-kernel@vger.kernel.org, Al Viro , Linux Containers , Andrew Morton , Benjamin Thery In-Reply-To: References: <20080618170729.808539948@theryb.frec.bull.fr> <20080618170730.256129077@theryb.frec.bull.fr> <1213811063.7922.39.camel@nimitz> Content-Type: text/plain Date: Thu, 19 Jun 2008 09:32:11 -0700 Message-Id: <1213893131.7922.67.camel@nimitz> Mime-Version: 1.0 X-Mailer: Evolution 2.22.2 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 859 Lines: 23 On Wed, 2008-06-18 at 13:12 -0700, Eric W. Biederman wrote: > > - The data in sysfs fundamentally changes behind the back of the > VFS and we need to keep the VFS in sync. Essentially this is the > distributed filesystem problem. > > - In particular for sysfs_rename and sysfs_move_dir we need to support > finding > the dcache entries and calling d_move. So that the dcache does not > get into an inconsistent state. Timeouts and invalidates like NFS > uses are to be avoided if at all possible. Much clearer now, thanks! Can we get this description into the changelog, pretty please? -- Dave -- 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/