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=-2.5 required=3.0 tests=MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 B388BC432C0 for ; Thu, 28 Nov 2019 14:42:39 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 7CF812071F for ; Thu, 28 Nov 2019 14:42:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7CF812071F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 143A06B053D; Thu, 28 Nov 2019 09:42:39 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 0F3F76B053E; Thu, 28 Nov 2019 09:42:39 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id EFD776B053F; Thu, 28 Nov 2019 09:42:38 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0130.hostedemail.com [216.40.44.130]) by kanga.kvack.org (Postfix) with ESMTP id DA4C56B053D for ; Thu, 28 Nov 2019 09:42:38 -0500 (EST) Received: from smtpin02.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with SMTP id 97C42181AEF1F for ; Thu, 28 Nov 2019 14:42:38 +0000 (UTC) X-FDA: 76205952396.02.talk08_170495b62fe0c X-HE-Tag: talk08_170495b62fe0c X-Filterd-Recvd-Size: 3356 Received: from mail-wr1-f67.google.com (mail-wr1-f67.google.com [209.85.221.67]) by imf47.hostedemail.com (Postfix) with ESMTP for ; Thu, 28 Nov 2019 14:42:38 +0000 (UTC) Received: by mail-wr1-f67.google.com with SMTP id a15so31434682wrf.9 for ; Thu, 28 Nov 2019 06:42:37 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:content-transfer-encoding :in-reply-to:user-agent; bh=kyRDRW0pDU5PLmANaY7B3Wbm9V4zGfXOFbv7d7Ln9uY=; b=P+pIq2Ex5nfzQ3K8i7j44f7aqTZ47OwODeXqnFDKSGn1fIA41BfcWzRdRXTvOBimAV ieO6gftNYI4OktOgPYQ7RVcXpFhSKKiBh2IYtWy4h4i+xKAZYpxxnGc7OnorRLCJzknW cC3vguVbIamwg/Flhz5/yEw9JZuKRLRc4X93g+Jhqeey8B/HiDsVVDJ+EbqjGX/splF1 KuG7xaDundbcI6Dc9yoSXBbPfDOGKtut+VJC4wmdgv8NpwenOjXAReBcdkKvFLMNRL2w 9n78uKJrum5/YMpnvUmnXI9H3ZuNnFbPYjJ69Wv2doVQ3W2uf4mn6GzT9skmCPQMTszH o9aw== X-Gm-Message-State: APjAAAXHXh28W3c04lMwyVfcEJzgI6sME9T9AIDJxw1WzCK0GOExj/4B HSa19wSzdNm+6df6NV/h/SM= X-Google-Smtp-Source: APXvYqzpQLTcWFIZdzjt+z41SmyfcH0vkfxatCxchZrmtNExp539N0q1tdUfIbuLq9gG1ha4GCekug== X-Received: by 2002:adf:9185:: with SMTP id 5mr50384780wri.389.1574952156976; Thu, 28 Nov 2019 06:42:36 -0800 (PST) Received: from localhost (prg-ext-pat.suse.com. [213.151.95.130]) by smtp.gmail.com with ESMTPSA id f2sm3817378wmh.46.2019.11.28.06.42.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Nov 2019 06:42:36 -0800 (PST) Date: Thu, 28 Nov 2019 15:42:35 +0100 From: Michal Hocko To: Qian Cai Cc: David Hildenbrand , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Andrew Morton , Oscar Salvador Subject: Re: [PATCH v1] mm/memory_hotplug: don't check the nid in find_(smallest|biggest)_section_pfn Message-ID: <20191128144235.GN26807@dhcp22.suse.cz> References: <657e4a9d-767d-5140-a4f4-d963794cdf0c@redhat.com> <270C2A1D-25B0-4BC5-A521-9EEADF3A6B75@lca.pw> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <270C2A1D-25B0-4BC5-A521-9EEADF3A6B75@lca.pw> User-Agent: Mutt/1.10.1 (2018-07-13) Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.092373, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu 28-11-19 09:30:29, Qian Cai wrote: >=20 >=20 > > On Nov 28, 2019, at 9:03 AM, David Hildenbrand wro= te: > >=20 > > That's why we have linux-next and plenty of people playing with it > > (including you and me for example). >=20 > As mentioned, it is an expensive development practice. Once a patch > was merged into linux-next, it becomes someone else=E2=80=99s problems > because if nobody flags it as problematic, all it needs is a good eye > review and some time before it gets merged into mainline eventually. I would tend to agree. linux-next shouldn't be considered a low bar target. Things should be reviewed before showing up there. There are obviously some exceptions, as always, but it shouldn't be over used. I wish MM patches would be applied to mmotm (and linux-next) more conservatively. --=20 Michal Hocko SUSE Labs