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=-7.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS 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 5C4EFC433EF for ; Tue, 14 Sep 2021 02:51:17 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 061CF600D4 for ; Tue, 14 Sep 2021 02:51:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 061CF600D4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 5CA326B006C; Mon, 13 Sep 2021 22:51:16 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 5793B6B0071; Mon, 13 Sep 2021 22:51:16 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 48FBD900002; Mon, 13 Sep 2021 22:51:16 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0055.hostedemail.com [216.40.44.55]) by kanga.kvack.org (Postfix) with ESMTP id 3A1186B006C for ; Mon, 13 Sep 2021 22:51:16 -0400 (EDT) Received: from smtpin07.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id DAA2C181AEF30 for ; Tue, 14 Sep 2021 02:51:15 +0000 (UTC) X-FDA: 78584652510.07.2F4EF4F Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf16.hostedemail.com (Postfix) with ESMTP id 8D444F00008C for ; Tue, 14 Sep 2021 02:51:15 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 6D553610F9; Tue, 14 Sep 2021 02:51:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1631587874; bh=LeDc9FUxhAd0agUr9PtL7mkbqZCgFRCvEmk8CtR8Q4E=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=TGzKjT7KXFYDYcrhzD4EC4aUuppevUry1Jh7j5KXsu1iGyF5tjgn+ZA3RCHjhUuMb K3fvvKrezbjTx6VQ1cjuDnJLtUvcaRetj25+X3gC2OCX7W4rvdtQK0lzvHux1N8HC4 r52AhA/vzD2c4AqF34+Ee/1knF6e3/845+0kzCn0= Date: Mon, 13 Sep 2021 19:51:13 -0700 From: Andrew Morton To: Michal Hocko Cc: Miaohe Lin , David Hildenbrand , vbabka@suse.cz, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] mm/page_isolation: fix potential missing call to unset_migratetype_isolate() Message-Id: <20210913195113.b13142630a5401e8abacc13e@linux-foundation.org> In-Reply-To: References: <20210913115125.33617-1-linmiaohe@huawei.com> <6cb372ff-0b68-2143-913e-04ab3e6b4160@huawei.com> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Stat-Signature: 5nm6j4mg3hkinrdaho6gqx3r45pmga7r Authentication-Results: imf16.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=TGzKjT7K; dmarc=none; spf=pass (imf16.hostedemail.com: domain of akpm@linux-foundation.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 8D444F00008C X-HE-Tag: 1631587875-320412 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, 13 Sep 2021 14:59:42 +0200 Michal Hocko wrote: > I do realize that the stable tree is in a hoarding mode for quite some > years but my general approach has been (in line with the documentation) > to mark and backport only fixes that really do matter. Me2. There has to be some risk-vs-reward test to be passed...