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 9700DC19F2C for ; Wed, 3 Aug 2022 00:06:28 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id CDAB08E0002; Tue, 2 Aug 2022 20:06:27 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id C627B8E0001; Tue, 2 Aug 2022 20:06:27 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B03498E0002; Tue, 2 Aug 2022 20:06:27 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id 99E708E0001 for ; Tue, 2 Aug 2022 20:06:27 -0400 (EDT) Received: from smtpin23.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id 70C37C1397 for ; Wed, 3 Aug 2022 00:06:27 +0000 (UTC) X-FDA: 79756339614.23.7D62FE9 Received: from sin.source.kernel.org (sin.source.kernel.org [145.40.73.55]) by imf08.hostedemail.com (Postfix) with ESMTP id DC22C160110 for ; Wed, 3 Aug 2022 00:06:26 +0000 (UTC) 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 sin.source.kernel.org (Postfix) with ESMTPS id E18A2CE18D1; Wed, 3 Aug 2022 00:06:23 +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 ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1659485187; a=rsa-sha256; cv=none; b=qxgr4f0FeU3GXuiYp3yF6QGbZQkdvEiiL7OKt6mOAfyjvAjH7GtCu6YL9PuRxXzxH1D1JC LiHNueYA5rYFDQv4Ezg+QiJ/h2NnroNhc47fctp4eW2vQpS0i4aL7JolcIyE9wQ+o7FP55 MwZKfwPEJpBaD6KwBCgzMMTQeiHGWpg= ARC-Authentication-Results: i=1; imf08.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=FzVMKbgJ; spf=pass (imf08.hostedemail.com: domain of akpm@linux-foundation.org designates 145.40.73.55 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1659485187; 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:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=kSXMxIO+X6QjZqmnz1yA9dWXhS8Xlc26HQtwARifSZ0=; b=YCFBvy1NsObLKHjcghP1EKxNfRPOijw4ydxP16dawBY7HL9reC30fqccpcYdQrreBunILW iwud1VhEGUbsy4lPSxa65+M4nUXM/B/bGaAfQ0t4pQjGYzcGGOManxLt0s5FJRhcllSZuN la4gQc2wVQjj+ScJJ4nfiESLdNLr+aQ= X-Rspam-User: X-Stat-Signature: wm1zd67j66c4aean7f7uppenny9o8eef X-Rspamd-Queue-Id: DC22C160110 Authentication-Results: imf08.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=FzVMKbgJ; spf=pass (imf08.hostedemail.com: domain of akpm@linux-foundation.org designates 145.40.73.55 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none X-Rspamd-Server: rspam02 X-HE-Tag: 1659485186-909119 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 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?