From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, TVD_SUBJ_WIPE_DEBT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 04B71C433E9 for ; Thu, 3 Sep 2020 14:44:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D61E9206EF for ; Thu, 3 Sep 2020 14:44:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729408AbgICOoB (ORCPT ); Thu, 3 Sep 2020 10:44:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37218 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729344AbgICOgg (ORCPT ); Thu, 3 Sep 2020 10:36:36 -0400 Received: from ZenIV.linux.org.uk (zeniv.linux.org.uk [IPv6:2002:c35c:fd02::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 189C3C061244; Thu, 3 Sep 2020 07:36:36 -0700 (PDT) Received: from viro by ZenIV.linux.org.uk with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kDqLl-009rJq-3l; Thu, 03 Sep 2020 14:36:29 +0000 Date: Thu, 3 Sep 2020 15:36:29 +0100 From: Al Viro To: Christoph Hellwig Cc: Linus Torvalds , Michael Ellerman , x86@kernel.org, Alexey Dobriyan , Luis Chamberlain , Kees Cook , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: Re: remove the last set_fs() in common code, and remove it for x86 and powerpc v3 Message-ID: <20200903143629.GN1236603@ZenIV.linux.org.uk> References: <20200903142242.925828-1-hch@lst.de> <20200903142803.GM1236603@ZenIV.linux.org.uk> <20200903143003.GA17260@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200903143003.GA17260@lst.de> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Thu, Sep 03, 2020 at 04:30:03PM +0200, Christoph Hellwig wrote: > On Thu, Sep 03, 2020 at 03:28:03PM +0100, Al Viro wrote: > > On Thu, Sep 03, 2020 at 04:22:28PM +0200, Christoph Hellwig wrote: > > > > > Besides x86 and powerpc I plan to eventually convert all other > > > architectures, although this will be a slow process, starting with the > > > easier ones once the infrastructure is merged. The process to convert > > > architectures is roughtly: > > > > > > (1) ensure there is no set_fs(KERNEL_DS) left in arch specific code > > > (2) implement __get_kernel_nofault and __put_kernel_nofault > > > (3) remove the arch specific address limitation functionality > > > > The one to really watch out for is sparc; I have something in that > > direction, will resurrect as soon as I'm done with eventpoll analysis... > > > > I can live with this series; do you want that in vfs.git#for-next? > > Either that or a separate tree is fine with me. It would be good to > eventually have a non-rebased stable tree so that other arch trees > can work from it, though. FWIW, vfs.git#for-next is always a merge of independent branches; I don't put stuff directly into #for-next - too easy to lose that way. IOW, that would be something like #base.set_fs, included into #for-next merge set. And I've no problem with never-rebased branches... Where in the mainline are the most recent prereqs of this series?