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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9A091C25B08 for ; Wed, 17 Aug 2022 05:43:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238588AbiHQFna (ORCPT ); Wed, 17 Aug 2022 01:43:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238570AbiHQFn1 (ORCPT ); Wed, 17 Aug 2022 01:43:27 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 662B378585 for ; Tue, 16 Aug 2022 22:43:26 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 0900BB81AD3 for ; Wed, 17 Aug 2022 05:43:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 314BAC433C1; Wed, 17 Aug 2022 05:43:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1660715003; bh=eO0iTKHSzV5zu2OW1AHPVACUhzexWpCHKWbHsLA3IyE=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=iHLU9TKRjJwKkO5OE7I/ksAsyI6BY+LMp3cx1Q1cEP8beB2C4rA8Xn/U1TEMbLGWl wb77SXwP7DeBWpQIh1u4ML6uVyeTU9RHGVZLUgDDPsQf2grtXQjcrFLQUrAX3PcI9/ sgfKzwSStjyTLI8rYImkTntzXfNiQDBKfDWWF3KQ= Date: Tue, 16 Aug 2022 22:43:22 -0700 From: Andrew Morton To: "Wang, Haiyue" Cc: "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , "david@redhat.com" , "apopple@nvidia.com" , "linmiaohe@huawei.com" , "Huang, Ying" , "songmuchun@bytedance.com" , "naoya.horiguchi@linux.dev" , "alex.sierra@amd.com" , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Mike Kravetz Subject: Re: [PATCH v6 1/2] mm: migration: fix the FOLL_GET failure on following huge page Message-Id: <20220816224322.33e0dfbcbf522fcdc2026f0e@linux-foundation.org> In-Reply-To: References: <20220812084921.409142-1-haiyue.wang@intel.com> <20220816022102.582865-1-haiyue.wang@intel.com> <20220816022102.582865-2-haiyue.wang@intel.com> <20220816175838.211a1b1e85bc68c439101995@linux-foundation.org> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 17 Aug 2022 03:31:37 +0000 "Wang, Haiyue" wrote: > > > } > > > > I would be better to fix this for real at those three client code sites? > > Then 5.19 will break for a while to wait for the final BIG patch ? If that's the proposal then your [1/2] should have had a cc:stable and changelog words describing the plan for 6.0. But before we do that I'd like to see at least a prototype of the final fixes to s390 and hugetlb, so we can assess those as preferable for backporting. I don't think they'll be terribly intrusive or risky?