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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1F5C3C3DA49 for ; Tue, 23 Jul 2024 11:55:19 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 545566B007B; Tue, 23 Jul 2024 07:55:19 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 4F5986B0083; Tue, 23 Jul 2024 07:55:19 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 3BCEB6B0089; Tue, 23 Jul 2024 07:55:19 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 1E0006B007B for ; Tue, 23 Jul 2024 07:55:19 -0400 (EDT) Received: from smtpin24.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id B2347161E73 for ; Tue, 23 Jul 2024 11:55:18 +0000 (UTC) X-FDA: 82370861916.24.E29C9BD Received: from mail-lj1-f170.google.com (mail-lj1-f170.google.com [209.85.208.170]) by imf25.hostedemail.com (Postfix) with ESMTP id B6A46A0007 for ; Tue, 23 Jul 2024 11:55:16 +0000 (UTC) Authentication-Results: imf25.hostedemail.com; dkim=pass header.d=suse.com header.s=google header.b=LgHvd+e4; spf=pass (imf25.hostedemail.com: domain of mhocko@suse.com designates 209.85.208.170 as permitted sender) smtp.mailfrom=mhocko@suse.com; dmarc=pass (policy=quarantine) header.from=suse.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1721735671; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=WQoa6ehQ0YVDqTqctBCMle2kRcjPByagNYOUENJGnKA=; b=Ca6Gd3wAOiSDH3sYHsaiCtOpf+TOJnJ1CC3jfXbngqMJxnyFp/neWXVaN2SFfjiDf/AYCv ZAdGuWWx1D4eGDO3gI7NO8ApEMhjkfYpxTE3d/5RMpjVByQoM3Hf+mEeiydZH+jqyXU/Jl CpkfcK+SZI8yXwPQXGxv5muD9S2kgQU= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1721735671; a=rsa-sha256; cv=none; b=W8DHV8FAwsvC+5ia63Gw25Dn9WKyefOTKYUxyhSuvm0uFQaqFbnWRCJ3WF5xjto07jn7oq UkDhCeIU2WhCciT5Zi1uZyHQfsct3wjqf/n2uHjnWO1OKkrW6Iko8Ft6cy/GGspdDgAuyt VRUsHZOnonVnudN3YaIzZ5lDp9U85y4= ARC-Authentication-Results: i=1; imf25.hostedemail.com; dkim=pass header.d=suse.com header.s=google header.b=LgHvd+e4; spf=pass (imf25.hostedemail.com: domain of mhocko@suse.com designates 209.85.208.170 as permitted sender) smtp.mailfrom=mhocko@suse.com; dmarc=pass (policy=quarantine) header.from=suse.com Received: by mail-lj1-f170.google.com with SMTP id 38308e7fff4ca-2ebe40673d8so65963741fa.3 for ; Tue, 23 Jul 2024 04:55:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=google; t=1721735715; x=1722340515; darn=kvack.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=WQoa6ehQ0YVDqTqctBCMle2kRcjPByagNYOUENJGnKA=; b=LgHvd+e4tnL8NHYuWqAL4pRx4fjob5/rNZopmLCkBjtuWR4wxpPj+/ackLyb/MbKKg MwBIF/mKIh64RtRzAUSlTCxwRo6cagcRrGVwtIVcWxvLrsaOMKkutv/nrH8do3dN9WXi X+q6mwNhgHmV8toBFO4Z/6RC3KcwajSqz4so/RmyVHz97iUTPDpiztBjhtupsTnjvRW2 7Wf5aKXQ3tp1r8S/AWe6ygxzZJC9EFzQtir8NU2PHXf853CllMIU/AXB5IKl/ZQgZ7mk qiY7a45KPU4TTbN8KBVfdIS/7bwdwKswXNBSFk/GaTcQ8sqgW8PGTnFkoPNilIZ8g8vO /Auw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721735715; x=1722340515; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=WQoa6ehQ0YVDqTqctBCMle2kRcjPByagNYOUENJGnKA=; b=R2PStg1dds+SdHJLYPXWm9IkKxsnCPld5vkYD336JETEi6a2XnLt4g+2djb+LJ4nmZ oh97RWqzYdSHxwVkZL7N/2hxxW/gB+fLK8d6nJQEv8Gh0Lh51tlfhvfVRHCGbj0XeJn8 iaPlK5P2ZfHHY7b4adYSiJb1YjTpdW2Vt0YSt0FU/iqGFfjEJ7t97H5LoGI9jrnehEng vrLxhk+FblmchpmfmXzYsfnnBFYTbCuNyRgHaFjSRkqvQ4m2Wkr+lGk76ifIeUmJUQ9J 3llIgmG423G2P/ITP5SB1mVpnZSL2PuPbf7SvgUkfi4MCA0i6/8oKilvZIVXOmaysrMA hOtw== X-Forwarded-Encrypted: i=1; AJvYcCWL7tDeF62hwGZzYmKxyzw1MR8NHGYv8FvnDKJTz8dD97AZ2ApmhUh98ASRugg5fjoxZ7mRePf6Z//940WnqLTkv5A= X-Gm-Message-State: AOJu0Yxc1M4xEAHMKBa5TiAkd10KbcOe0I+ZT1VnNJ1fLs+KbgEhDQT7 8U6TTVvOW66y4HVB8iogxwv937Ib2PJuQzA4yHYFz7h8wAWqChUcOBzULmIpSvQ= X-Google-Smtp-Source: AGHT+IEvYNwyaaxdoUFWVu7x/WsjFTLx1CzKrLG5et/326ggkrbDQ2+hTQ74UgEfDVQNIvnoJEu/BQ== X-Received: by 2002:a2e:95c2:0:b0:2ef:564c:a590 with SMTP id 38308e7fff4ca-2ef564ca663mr31778221fa.29.1721735714808; Tue, 23 Jul 2024 04:55:14 -0700 (PDT) Received: from localhost (109-81-94-157.rct.o2.cz. [109.81.94.157]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5a30c7d32e6sm7413595a12.84.2024.07.23.04.55.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Jul 2024 04:55:14 -0700 (PDT) Date: Tue, 23 Jul 2024 13:55:13 +0200 From: Michal Hocko To: "Kirill A. Shutemov" Cc: Vlastimil Babka , Andrew Morton , "Borislav Petkov (AMD)" , Mel Gorman , Tom Lendacky , Mike Rapoport , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Jianxiong Gao , stable@vger.kernel.org Subject: Re: [PATCH] mm: Fix endless reclaim on machines with unaccepted memory. Message-ID: References: <20240716130013.1997325-1-kirill.shutemov@linux.intel.com> <564ff8e4-42c9-4a00-8799-eaa1bef9c338@suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Queue-Id: B6A46A0007 X-Stat-Signature: e61fec4npt4gce7799edgcze5yjb14ok X-Rspamd-Server: rspam09 X-Rspam-User: X-HE-Tag: 1721735716-309393 X-HE-Meta: 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 kTFj0hxw 59TY6bzIQf4giXar7tXtbJ70ZjVfavilNYTH4cdZr3MpicVKsMsPxcw8vjLxL+xFALHejByFx/sJ21DZ0FJ/nZrrPhdZ21n45RSqf/d3/iF91C930CpRBLqTaTTqiqu+G9fXTIWmazzeSNBJVi2PM3C787f3IIQE9Th+54Mmslz0exI0n2Kh0DUmluv3tyIF03Vs/9wrARMfAoSYwOiJBtPXd/VOE5LJvUr3Pfg7gA5uCdlwhTPpSRfhpNyKhnpWJCUBTU2eYRj7YgIok/ykDfpQcCdztELd4lLTV X-Bogosity: Ham, tests=bogofilter, spamicity=0.000005, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue 23-07-24 12:49:41, Kirill A. Shutemov wrote: > On Tue, Jul 23, 2024 at 09:30:27AM +0200, Vlastimil Babka wrote: [...] > > Although just removing the lazy accept mode would be much more appealing > > solution than this :) > > :P > > Not really an option for big VMs. It might add many minutes to boot time. Well a huge part of that can be done in the background so the boot doesn't really have to wait for all of it. If we really have to start playing whack-a-mole to plug all the potential ways to trigger reclaim imbalance I think it is fair to re-evaluate how much lazy should the initialization really be. -- Michal Hocko SUSE Labs