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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8ACFEC00140 for ; Wed, 3 Aug 2022 00:06:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235302AbiHCAG0 (ORCPT ); Tue, 2 Aug 2022 20:06:26 -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 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?