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 09C97C678D5 for ; Wed, 8 Mar 2023 20:15:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230201AbjCHUPI (ORCPT ); Wed, 8 Mar 2023 15:15:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59036 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230288AbjCHUOv (ORCPT ); Wed, 8 Mar 2023 15:14:51 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B252062867 for ; Wed, 8 Mar 2023 12:14:30 -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 6D315B81DFC for ; Wed, 8 Mar 2023 20:14:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0DCBDC433D2; Wed, 8 Mar 2023 20:14:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1678306468; bh=Hv05QUCSj8jikCtoZwVnjOtM37dv9fPUH814EuMf5yg=; h=Date:To:From:Subject:From; b=cxk6rE+pEH2PT7/1yO8F05dEF5PGyQcb3BG4qTn3SKkpTZ0SZe24xXYIp6ymzfG0i I2RjGtVJ7Fq7DKK5y12zPlpt4Zzxjoy3wJRnZo/7VMCTd5MK8QS5JStZkKKgLCoHJB KMNd8nCdqF2GZUfW8Q/pVfF9y7O0Tk6I6JGHRv8g= Date: Wed, 08 Mar 2023 12:14:27 -0800 To: mm-commits@vger.kernel.org, willy@infradead.org, tangyeechou@gmail.com, shakeelb@google.com, roman.gushchin@linux.dev, muchun.song@linux.dev, mhocko@suse.com, hannes@cmpxchg.org, findns94@gmail.com, akpm@linux-foundation.org From: Andrew Morton Subject: + mm-memcg-prevent-memoryswappiness-load-store-tearing-v3.patch added to mm-unstable branch Message-Id: <20230308201428.0DCBDC433D2@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The patch titled Subject: mm-memcg-prevent-memoryswappiness-load-store-tearing-v3 has been added to the -mm mm-unstable branch. Its filename is mm-memcg-prevent-memoryswappiness-load-store-tearing-v3.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-memcg-prevent-memoryswappiness-load-store-tearing-v3.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Yue Zhao Subject: mm-memcg-prevent-memoryswappiness-load-store-tearing-v3 Date: Thu, 9 Mar 2023 00:25:53 +0800 Add [WRITE|READ]_ONCE for all occurrences of memcg->oom_kill_disable, memcg->swappiness and memcg->soft_limit Link: https://lkml.kernel.org/r/20230308162555.14195-3-findns94@gmail.com Signed-off-by: Yue Zhao Cc: Johannes Weiner Cc: Matthew Wilcox (Oracle) Cc: Michal Hocko Cc: Muchun Song Cc: Roman Gushchin Cc: Shakeel Butt Cc: Tang Yizhou Signed-off-by: Andrew Morton --- --- a/mm/memcontrol.c~mm-memcg-prevent-memoryswappiness-load-store-tearing-v3 +++ a/mm/memcontrol.c @@ -5353,7 +5353,7 @@ mem_cgroup_css_alloc(struct cgroup_subsy #endif page_counter_set_high(&memcg->swap, PAGE_COUNTER_MAX); if (parent) { - memcg->swappiness = mem_cgroup_swappiness(parent); + WRITE_ONCE(memcg->swappiness, mem_cgroup_swappiness(parent)); memcg->oom_kill_disable = parent->oom_kill_disable; page_counter_init(&memcg->memory, &parent->memory); _ Patches currently in -mm which might be from findns94@gmail.com are mm-memcg-prevent-memoryoomgroup-load-store-tearing.patch mm-memcg-prevent-memoryswappiness-load-store-tearing.patch mm-memcg-prevent-memoryswappiness-load-store-tearing-v3.patch mm-memcg-prevent-memoryoom_control-load-store-tearing.patch mm-memcg-prevent-memoryoom_control-load-store-tearing-v3.patch mm-memcg-prevent-memorysoft_limit_in_bytes-load-store-tearing.patch mm-memcg-prevent-memorysoft_limit_in_bytes-load-store-tearing-v3.patch