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 D8597C19F28 for ; Wed, 3 Aug 2022 17:27:25 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 473EB6B0072; Wed, 3 Aug 2022 13:27:25 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 4236A6B0073; Wed, 3 Aug 2022 13:27:25 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2EC8A6B0074; Wed, 3 Aug 2022 13:27:25 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id 1B0DF6B0072 for ; Wed, 3 Aug 2022 13:27:25 -0400 (EDT) Received: from smtpin09.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id E029B1A1509 for ; Wed, 3 Aug 2022 17:27:24 +0000 (UTC) X-FDA: 79758962808.09.63F1F48 Received: from shelob.surriel.com (shelob.surriel.com [96.67.55.147]) by imf23.hostedemail.com (Postfix) with ESMTP id 7A451140119 for ; Wed, 3 Aug 2022 17:27:24 +0000 (UTC) Received: from imladris.surriel.com ([96.67.55.152]) by shelob.surriel.com with esmtpsa (TLS1.2) tls TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1oJI9P-0005Gg-1o; Wed, 03 Aug 2022 13:27:19 -0400 Message-ID: <5fa3beeccef7ab959d266973ab1641f011fdf11f.camel@surriel.com> Subject: Re: [PATCH] mm: vmscan: fix extreme overreclaim and swap floods From: Rik van Riel To: Johannes Weiner , Andrew Morton Cc: Mel Gorman , Hugh Dickins , Joonsoo Kim , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kernel-team@fb.com Date: Wed, 03 Aug 2022 13:27:17 -0400 In-Reply-To: <20220802162811.39216-1-hannes@cmpxchg.org> References: <20220802162811.39216-1-hannes@cmpxchg.org> Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-c5DYBJ2YMqcrTKaCXMk8" User-Agent: Evolution 3.42.4 (3.42.4-1.fc35) MIME-Version: 1.0 ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1659547644; a=rsa-sha256; cv=none; b=ct0f07iiuqm0e69WbhB33Tve441eRN7rAaRhnGE1ChRuawuoDs1oM9ms6OLSeUQ1UbPnwU EBkF6LeoIJGho2QPu2obQVUk9xoyyDX0m7tGxbnGapiKrKnx8FSleohJ8+yfPxUoyIwqyA 0GVE/eu08WOl9XRSisQtzWFZAtLPCsg= ARC-Authentication-Results: i=1; imf23.hostedemail.com; dkim=none; dmarc=none; spf=none (imf23.hostedemail.com: domain of riel@shelob.surriel.com has no SPF policy when checking 96.67.55.147) smtp.mailfrom=riel@shelob.surriel.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1659547644; h=from:from:sender: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; bh=So4X9k1mdolv0ZhFOpXkae/1rLD94AIyERwIDBdfcak=; b=Peen56sd5h0CA7oxAT1F1oZMUaJuopsncdKdXuE5eOzQENJS0bQqEXZB2m/r0cgtT32MT7 IPLqw/wWishQTRbgAsshO8VS67p3tFvQ+rWOViUmaWRMypEIL8SlSGxWOLBSmAjFZgqEMv pM9byRn/wmTWikNFYmUNd+X+ckNHaJg= X-Rspam-User: X-Stat-Signature: j5ztyi59495mhswo9pkbbritfhsmii9c X-Rspamd-Queue-Id: 7A451140119 Authentication-Results: imf23.hostedemail.com; dkim=none; dmarc=none; spf=none (imf23.hostedemail.com: domain of riel@shelob.surriel.com has no SPF policy when checking 96.67.55.147) smtp.mailfrom=riel@shelob.surriel.com X-Rspamd-Server: rspam02 X-HE-Tag: 1659547644-43032 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: --=-c5DYBJ2YMqcrTKaCXMk8 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2022-08-02 at 12:28 -0400, Johannes Weiner wrote: >=20 > 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. >=20 > This fixes the extreme overreclaim problem. Reviewed-by: Rik van Riel --=20 All Rights Reversed. --=-c5DYBJ2YMqcrTKaCXMk8 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEKR73pCCtJ5Xj3yADznnekoTE3oMFAmLqr/UACgkQznnekoTE 3oOr0wgAgywUN9uwGumzoYXp2P0EZjiAvNMUwlHX7GhhRiywm5I5rJzpy9j8MOJ0 qXoptdJBJVXYfFCGAuqkuirya5wUO6Ig0tqcvXH5hbL6wwUbUPs51zUFdLyibPHW 6JipHhsGcrquVHQFoi1ko73Dq7QWpN+2cuU7eD4jLmFnloINkSr+Uz6xbbMa5/da IMsCHnZq2gxBB3uBfr0MC+jR3n9XkSobG+p9oLYgJvthIfRne30Jom+wJV1xC3OG vFU99MNQm9YM8GO0TLEttvuVz7aZMmPJQLmko98lR4vi1Fzw28TBg2ntPVC/J1yf bg7+OxovM8MPbnVDn8DLgnzQ9khLFw== =zH2i -----END PGP SIGNATURE----- --=-c5DYBJ2YMqcrTKaCXMk8--