Received: by 2002:ac0:e350:0:0:0:0:0 with SMTP id g16csp43026imn; Tue, 2 Aug 2022 17:42:54 -0700 (PDT) X-Google-Smtp-Source: AA6agR64kfAgF/ZeNYkrMFG0rFV5FmTwmeWq431RpoXaVHmNMv5ABryievePWfagPJ2qUV7jS9DW X-Received: by 2002:a17:906:cc56:b0:730:a2f0:7466 with SMTP id mm22-20020a170906cc5600b00730a2f07466mr3601775ejb.211.1659487374602; Tue, 02 Aug 2022 17:42:54 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1659487374; cv=none; d=google.com; s=arc-20160816; b=pSiwnkUNGDSmhb3vbD5GTmNKwExafWqAcvwF3Fhw6aZmWPqx8yD4NurJEviw2cle7d VZwRxsqIVcuxJpcKiDwd6yiDxs5/b7yxgXTs2Toh4AolqNLoA8RC6ZADz9rftrGH5o8L alK4o7u8fMVMEWhycVW/Pv9fs+wpf5/kZz/IsiaT7doBmbJT+dRgxIyw5a9q4Qg8b5He q8tVx5BMuyrop0yNVDv7ejNv4sVQmU2a1140q8n9Q5K2LuyPoDQ1LdPvBVSi+ICLwsbe puRQsk8TcIFCarSE3sJ5RHQyXixBJlxSori5n0e7Yl3NbcrZnTSmt+RAP0z6DtrmB02T mPAw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:subject:cc:to:from:date :dkim-signature; bh=kSXMxIO+X6QjZqmnz1yA9dWXhS8Xlc26HQtwARifSZ0=; b=AJap5SXWJYnf2fNNk6FS417M0WbfWzrESboDlyUia93Rt78f55e7iGsglK5oIb0nAv 4IJMl+iy+D56eix+bzRWEh7d+mLytjVHORkRLtgbJm3opdYhV8MrYs5kW3SYeWnV1tmc pqOVUE1Ny9bwvk75OAtFJdWunW1MoSSccujlKcritv3U/fWQpgtvAQgkgUqj7nxvklxN 4DI2+ZrQ5Ag3AvxaztevJHzYDbc7iuz4kgH9vs1H4Evk3pFc+Fyi8qN0W6rYTace+39H CyoE/SFx+q/NHmgAjbDO18KWVNNwQ3p4I/NOvnZMahFn5SM6O41efirsilkpG3LWqeqw AMhQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linux-foundation.org header.s=korg header.b=FzVMKbgJ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id dm16-20020a170907949000b00730928e31cbsi5776959ejc.882.2022.08.02.17.42.05; Tue, 02 Aug 2022 17:42:54 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linux-foundation.org header.s=korg header.b=FzVMKbgJ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235244AbiHCAGZ (ORCPT + 99 others); Tue, 2 Aug 2022 20:06:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59712 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229637AbiHCAGY (ORCPT ); Tue, 2 Aug 2022 20:06:24 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4E2CC632B for ; Tue, 2 Aug 2022 17:06:23 -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 dfw.source.kernel.org (Postfix) with ESMTPS id D85B460FFD for ; Wed, 3 Aug 2022 00:06:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E2B70C433D6; Wed, 3 Aug 2022 00:06:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1659485182; bh=A1bEjUNDmXZlf1s9hKSqB6phav6SahGBSJ7Yyt9K64I=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=FzVMKbgJ599Pvr5ubPMjuQ6eKyGQP/XjKFtDfYDOuhukdpudTASqNjQl3kr3YHCUn cftT5Xw6qPAQpPjx7ovTBuuuDscsjp5lwiiOMjIignmhK+JMVFzyIz0C9fXJ1Qf7Tp /38vBOljMUUsIY6N0AeYIpapU5nPixHhKbR2sW6w= Date: Tue, 2 Aug 2022 17:06:19 -0700 From: Andrew Morton To: Johannes Weiner Cc: Mel Gorman , Hugh Dickins , Joonsoo Kim , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kernel-team@fb.com Subject: Re: [PATCH] mm: vmscan: fix extreme overreclaim and swap floods Message-Id: <20220802170619.250e1a0b475222a82e7077b3@linux-foundation.org> In-Reply-To: <20220802162811.39216-1-hannes@cmpxchg.org> References: <20220802162811.39216-1-hannes@cmpxchg.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 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,NICE_REPLY_A,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2 Aug 2022 12:28:11 -0400 Johannes Weiner wrote: > Change the code such that only one SWAP_CLUSTER_MAX-sized nudge toward > the larger LRU lists is made before bailing out on a met reclaim goal. It seems rash to jam this into 5.20-rc1 at this stage. I'm thinking 5.21-rc1 with a cc:stable?