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 1BE54C38159 for ; Thu, 19 Jan 2023 01:16:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230031AbjASBQ5 (ORCPT ); Wed, 18 Jan 2023 20:16:57 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38214 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229982AbjASBPS (ORCPT ); Wed, 18 Jan 2023 20:15:18 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 62A5D53571 for ; Wed, 18 Jan 2023 17:14:35 -0800 (PST) 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 ams.source.kernel.org (Postfix) with ESMTPS id 11881B81FB9 for ; Thu, 19 Jan 2023 01:14:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A5280C433F0; Thu, 19 Jan 2023 01:14:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1674090872; bh=38MHb7M1tMYqaD6sT86b950UvPfOR2V0Q9vfnFcejxw=; h=Date:To:From:Subject:From; b=gH3ZCFJUVpEBemDRV3+fFE4T7HW1hPlWyYu9HN8Q1yR04tdFsV0LV3yPMFPMarYIR lLlm9iaa3Lzv26t8h7Xgr+GwecFtZfFBSXS82ZG8KGyCOV0ksOZJo6deQAjjuKIzKc O/8kJSNJtYO8jv8P2yve67K5LpjkyCv8mVZhtG6w= Date: Wed, 18 Jan 2023 17:14:32 -0800 To: mm-commits@vger.kernel.org, shuah@kernel.org, corbet@lwn.net, sj@kernel.org, akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-damon-reclaim-add-a-parameter-called-skip_anon-for-avoiding-anonymous-pages-reclamation.patch removed from -mm tree Message-Id: <20230119011432.A5280C433F0@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The quilt patch titled Subject: mm/damon/reclaim: add a parameter called skip_anon for avoiding anonymous pages reclamation has been removed from the -mm tree. Its filename was mm-damon-reclaim-add-a-parameter-called-skip_anon-for-avoiding-anonymous-pages-reclamation.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: SeongJae Park Subject: mm/damon/reclaim: add a parameter called skip_anon for avoiding anonymous pages reclamation Date: Mon, 5 Dec 2022 23:08:22 +0000 In some cases, for example if users have confidence at anonymous pages management or the swap device is too slow, users would want to avoid DAMON_RECLAIM swapping the anonymous pages out. For such case, add yet another DAMON_RECLAIM parameter, namely 'skip_anon'. When it is set as 'Y', DAMON_RECLAIM will avoid reclaiming anonymous pages using a DAMOS filter. Link: https://lkml.kernel.org/r/20221205230830.144349-4-sj@kernel.org Signed-off-by: SeongJae Park Cc: Jonathan Corbet Cc: Shuah Khan Signed-off-by: Andrew Morton --- mm/damon/reclaim.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) --- a/mm/damon/reclaim.c~mm-damon-reclaim-add-a-parameter-called-skip_anon-for-avoiding-anonymous-pages-reclamation +++ a/mm/damon/reclaim.c @@ -99,6 +99,15 @@ static unsigned long monitor_region_end module_param(monitor_region_end, ulong, 0600); /* + * Skip anonymous pages reclamation. + * + * If this parameter is set as ``Y``, DAMON_RECLAIM does not reclaim anonymous + * pages. By default, ``N``. + */ +static bool skip_anon __read_mostly; +module_param(skip_anon, bool, 0600); + +/* * PID of the DAMON thread * * If DAMON_RECLAIM is enabled, this becomes the PID of the worker thread. @@ -142,6 +151,7 @@ static struct damos *damon_reclaim_new_s static int damon_reclaim_apply_parameters(void) { struct damos *scheme; + struct damos_filter *filter; int err = 0; err = damon_set_attrs(ctx, &damon_reclaim_mon_attrs); @@ -152,6 +162,15 @@ static int damon_reclaim_apply_parameter scheme = damon_reclaim_new_scheme(); if (!scheme) return -ENOMEM; + if (skip_anon) { + filter = damos_new_filter(DAMOS_FILTER_TYPE_ANON, true); + if (!filter) { + /* Will be freed by next 'damon_set_schemes()' below */ + damon_destroy_scheme(scheme); + return -ENOMEM; + } + damos_add_filter(scheme, filter); + } damon_set_schemes(ctx, &scheme, 1); return damon_set_region_biggest_system_ram_default(target, _ Patches currently in -mm which might be from sj@kernel.org are mm-damon-core-update-kernel-doc-comments-for-damos-action-supports-of-each-damon-operations-set.patch mm-damon-core-update-kernel-doc-comments-for-damos-filters-supports-of-each-damon-operations-set.patch docs-mm-damon-index-mention-damos-on-the-intro.patch docs-admin-guide-mm-damon-usage-update-damos-actions-filters-supports-of-each-damon-operations-set.patch docs-mm-damon-add-a-maintainer-profile-for-damon.patch maintainers-damon-link-maintainer-profile-git-trees-and-website.patch selftests-damon-sysfs-hide-expected-write-failures.patch selftests-damon-debugfs_rm_non_contexts-hide-expected-write-error-messages.patch scripts-spelling-add-a-few-more-typos.patch