From patchwork Sat Oct 19 03:20:11 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 11199901 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D563014E5 for ; Sat, 19 Oct 2019 03:20:15 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id A25B322466 for ; Sat, 19 Oct 2019 03:20:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="K/YrE6N6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A25B322466 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 42E0C8E0015; Fri, 18 Oct 2019 23:20:14 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 3B8D38E0003; Fri, 18 Oct 2019 23:20:14 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2CD6C8E0015; Fri, 18 Oct 2019 23:20:14 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0090.hostedemail.com [216.40.44.90]) by kanga.kvack.org (Postfix) with ESMTP id 0B0798E0003 for ; Fri, 18 Oct 2019 23:20:14 -0400 (EDT) Received: from smtpin22.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with SMTP id B7BA9180ACEFB for ; Sat, 19 Oct 2019 03:20:13 +0000 (UTC) X-FDA: 76059080706.22.earth34_1f0ff53ed2c62 X-Spam-Summary: 2,0,0,9b7eabc16fdd2dbe,d41d8cd98f00b204,akpm@linux-foundation.org,:akpm@linux-foundation.org:hannes@cmpxchg.org:khlebnikov@yandex-team.ru::mhocko@suse.com:mm-commits@vger.kernel.org:torvalds@linux-foundation.org:vdavydov.dev@gmail.com,RULES_HIT:41:355:379:800:960:967:973:988:989:1260:1263:1345:1381:1431:1437:1534:1542:1711:1730:1747:1777:1792:2393:2525:2559:2563:2682:2685:2859:2895:2902:2933:2937:2939:2942:2945:2947:2951:2954:3022:3138:3139:3140:3141:3142:3353:3865:3866:3867:3868:3870:3871:3874:3934:3936:3938:3941:3944:3947:3950:3953:3956:3959:4321:5007:6261:6653:7514:7576:8599:8957:9025:9121:9207:9545:10004:10913:11026:11473:11658:11914:12043:12048:12114:12296:12297:12438:12517:12519:12555:12679:12783:12986:13161:13229:13846:14093:14096:14181:14721:14849:14915:21080:21450:21451:21627:21795:21939:30054:30070,0,RBL:error,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:neutral,Custom_rules:0:0:0,LFtime:3,LUA_SUMMARY :none X-HE-Tag: earth34_1f0ff53ed2c62 X-Filterd-Recvd-Size: 3885 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf15.hostedemail.com (Postfix) with ESMTP for ; Sat, 19 Oct 2019 03:20:13 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1D36C22459; Sat, 19 Oct 2019 03:20:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1571455212; bh=3MEimH83ogBBRQ4vmskKFJ/piIcZqugiVN5FCMgKRcQ=; h=Date:From:To:Subject:From; b=K/YrE6N6PDixangLw0FlOHT6CWbzNK2E73ATqAkf3Em4SkBiSui+BfZNQP5uVgUWu uLjvcaRjdMuTYkajLSqnWF0fCX6DE7NmO+9HFJr30+0TY/LQChEMCDZA8jlJfpgzN9 0u+5Kq4D4toD12y2jduwojMcuosFo3xUDt6Qt0mE= Date: Fri, 18 Oct 2019 20:20:11 -0700 From: akpm@linux-foundation.org To: akpm@linux-foundation.org, hannes@cmpxchg.org, khlebnikov@yandex-team.ru, linux-mm@kvack.org, mhocko@suse.com, mm-commits@vger.kernel.org, torvalds@linux-foundation.org, vdavydov.dev@gmail.com Subject: [patch 16/26] mm/memcontrol: update lruvec counters in mem_cgroup_move_account Message-ID: <20191019032011.61khlsSYb%akpm@linux-foundation.org> User-Agent: s-nail v14.8.16 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: From: Konstantin Khlebnikov Subject: mm/memcontrol: update lruvec counters in mem_cgroup_move_account Mapped, dirty and writeback pages are also counted in per-lruvec stats. These counters needs update when page is moved between cgroups. Currently is nobody *consuming* the lruvec versions of these counters and that there is no user-visible effect. Link: http://lkml.kernel.org/r/157112699975.7360.1062614888388489788.stgit@buzz Fixes: 00f3ca2c2d66 ("mm: memcontrol: per-lruvec stats infrastructure") Signed-off-by: Konstantin Khlebnikov Acked-by: Johannes Weiner Acked-by: Michal Hocko Cc: Vladimir Davydov --- mm/memcontrol.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) --- a/mm/memcontrol.c~mm-memcontrol-update-lruvec-counters-in-mem_cgroup_move_account +++ a/mm/memcontrol.c @@ -5420,6 +5420,8 @@ static int mem_cgroup_move_account(struc struct mem_cgroup *from, struct mem_cgroup *to) { + struct lruvec *from_vec, *to_vec; + struct pglist_data *pgdat; unsigned long flags; unsigned int nr_pages = compound ? hpage_nr_pages(page) : 1; int ret; @@ -5443,11 +5445,15 @@ static int mem_cgroup_move_account(struc anon = PageAnon(page); + pgdat = page_pgdat(page); + from_vec = mem_cgroup_lruvec(pgdat, from); + to_vec = mem_cgroup_lruvec(pgdat, to); + spin_lock_irqsave(&from->move_lock, flags); if (!anon && page_mapped(page)) { - __mod_memcg_state(from, NR_FILE_MAPPED, -nr_pages); - __mod_memcg_state(to, NR_FILE_MAPPED, nr_pages); + __mod_lruvec_state(from_vec, NR_FILE_MAPPED, -nr_pages); + __mod_lruvec_state(to_vec, NR_FILE_MAPPED, nr_pages); } /* @@ -5459,14 +5465,14 @@ static int mem_cgroup_move_account(struc struct address_space *mapping = page_mapping(page); if (mapping_cap_account_dirty(mapping)) { - __mod_memcg_state(from, NR_FILE_DIRTY, -nr_pages); - __mod_memcg_state(to, NR_FILE_DIRTY, nr_pages); + __mod_lruvec_state(from_vec, NR_FILE_DIRTY, -nr_pages); + __mod_lruvec_state(to_vec, NR_FILE_DIRTY, nr_pages); } } if (PageWriteback(page)) { - __mod_memcg_state(from, NR_WRITEBACK, -nr_pages); - __mod_memcg_state(to, NR_WRITEBACK, nr_pages); + __mod_lruvec_state(from_vec, NR_WRITEBACK, -nr_pages); + __mod_lruvec_state(to_vec, NR_WRITEBACK, nr_pages); } #ifdef CONFIG_TRANSPARENT_HUGEPAGE