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 X-Spam-Level: X-Spam-Status: No, score=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B92CC54FCC for ; Mon, 20 Apr 2020 22:11:59 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 3D6AB206E9 for ; Mon, 20 Apr 2020 22:11:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=cmpxchg-org.20150623.gappssmtp.com header.i=@cmpxchg-org.20150623.gappssmtp.com header.b="zOh4nR//" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3D6AB206E9 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=cmpxchg.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 935E78E000D; Mon, 20 Apr 2020 18:11:56 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 90D388E0003; Mon, 20 Apr 2020 18:11:56 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 7FE5C8E000D; Mon, 20 Apr 2020 18:11:56 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0112.hostedemail.com [216.40.44.112]) by kanga.kvack.org (Postfix) with ESMTP id 63F478E0003 for ; Mon, 20 Apr 2020 18:11:56 -0400 (EDT) Received: from smtpin04.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 26298824556B for ; Mon, 20 Apr 2020 22:11:56 +0000 (UTC) X-FDA: 76729631832.04.basin81_682a17453670f X-HE-Tag: basin81_682a17453670f X-Filterd-Recvd-Size: 5884 Received: from mail-qt1-f195.google.com (mail-qt1-f195.google.com [209.85.160.195]) by imf50.hostedemail.com (Postfix) with ESMTP for ; Mon, 20 Apr 2020 22:11:55 +0000 (UTC) Received: by mail-qt1-f195.google.com with SMTP id z90so9993738qtd.10 for ; Mon, 20 Apr 2020 15:11:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cmpxchg-org.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=B6Lc3E3LhxWdBCoIQ263CZTYhXxWswvkwsnvqPUoqvI=; b=zOh4nR//aGqF/G3PkVQBTFQpUXaW2roAMB53HTt3TgNOo4Skb5ppokAmhVW07gKrgS Iz5r3vdxlD8OBux0DOlpjHsXYTfU46y9ILOMZ+x+3ZN77/8ZkatUWSzOjZP3cHCh7IUm YHGQrlRRFJZ4Sksi3PQh6eOPU7qfLoNDvw5lAJxQFEzP8GUIQ+km9ul/+/baMjnxjpUR l01Mi9MKW3UZ01itSMHkJqXfR6hXne2g0igBp3ULTRt7epfQtzKpURMliuCd91FTIxsV 4P5LdL/TnocHc9+7FXcNilk2T0otOYFWgPHciSC3APZ4Rj7J0C15LDLbsIgvf+cA7/Gd hSEQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=B6Lc3E3LhxWdBCoIQ263CZTYhXxWswvkwsnvqPUoqvI=; b=NJSapxTClyiGTGvCC1ioL3CSOKwgBMsZCV41aWFFOb6yfGnPpGSrfsXJP+9R0/8MQn hR5txQG2vt8nMSzIqGGUzSI4ySVT/sgwYSqcr2L7/wdkDMQbORQipl8Qdbp9dBBBwaMo 6NTytrR5DMHAjdN3ujeyu8+ls7qZoW6+Lrbo8EC/rK3ltcr9JNclZMguvTdRBBbytH6Q I6Sio7awaw2Wa+TJxdh1dldDGPCf+R9HD99n0s8b9o64kMtu/e+TSYwkVWJabvKEpI/T FxqBOSSqou28Hs/4bGTJ+o6FCANFxB/adxGxrnXKZPrRbs6mIsWF3ZR04O65KUkHX5eX CvkQ== X-Gm-Message-State: AGi0PuZVzFi3WfdtdsqYmu+pmXJlVx53kn6dd+H91tsHBHwkeGmX0Cob f0a0kwW9V7rRVXMP0JaAsN3lSg== X-Google-Smtp-Source: APiQypKQ1M8wB71QSzsxAGtLLoaeIXSGYaixUWDp3ZtfOFShTelL2dkvaBwia46T8j/DXNEt0qi+wQ== X-Received: by 2002:aed:3b0b:: with SMTP id p11mr18236016qte.109.1587420715039; Mon, 20 Apr 2020 15:11:55 -0700 (PDT) Received: from localhost ([2620:10d:c091:480::1:e6b6]) by smtp.gmail.com with ESMTPSA id u5sm590828qkm.116.2020.04.20.15.11.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Apr 2020 15:11:54 -0700 (PDT) From: Johannes Weiner To: Joonsoo Kim , Alex Shi Cc: Shakeel Butt , Hugh Dickins , Michal Hocko , "Kirill A. Shutemov" , Roman Gushchin , linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-team@fb.com Subject: [PATCH 08/18] mm: memcontrol: prepare cgroup vmstat infrastructure for native anon counters Date: Mon, 20 Apr 2020 18:11:16 -0400 Message-Id: <20200420221126.341272-9-hannes@cmpxchg.org> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200420221126.341272-1-hannes@cmpxchg.org> References: <20200420221126.341272-1-hannes@cmpxchg.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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: Anonymous compound pages can be mapped by ptes, which means that if we want to track NR_MAPPED_ANON, NR_ANON_THPS on a per-cgroup basis, we have to be prepared to see tail pages in our accounting functions. Make mod_lruvec_page_state() and lock_page_memcg() deal with tail pages correctly, namely by redirecting to the head page which has the page->mem_cgroup set up. Signed-off-by: Johannes Weiner --- include/linux/memcontrol.h | 5 +++-- mm/memcontrol.c | 9 ++++++--- 2 files changed, 9 insertions(+), 5 deletions(-) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 5e8b0e38f145..5a1b5a7b7728 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -711,16 +711,17 @@ static inline void mod_lruvec_state(struct lruvec *= lruvec, static inline void __mod_lruvec_page_state(struct page *page, enum node_stat_item idx, int val) { + struct page *head =3D compound_head(page); /* rmap on tail pages */ pg_data_t *pgdat =3D page_pgdat(page); struct lruvec *lruvec; =20 /* Untracked pages have no memcg, no lruvec. Update only the node */ - if (!page->mem_cgroup) { + if (!head->mem_cgroup) { __mod_node_page_state(pgdat, idx, val); return; } =20 - lruvec =3D mem_cgroup_lruvec(page->mem_cgroup, pgdat); + lruvec =3D mem_cgroup_lruvec(head->mem_cgroup, pgdat); __mod_lruvec_state(lruvec, idx, val); } =20 diff --git a/mm/memcontrol.c b/mm/memcontrol.c index ac6f2b073a5a..e9e22c86a118 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1979,6 +1979,7 @@ void mem_cgroup_print_oom_group(struct mem_cgroup *= memcg) */ struct mem_cgroup *lock_page_memcg(struct page *page) { + struct page *head =3D compound_head(page); /* rmap on tail pages */ struct mem_cgroup *memcg; unsigned long flags; =20 @@ -1998,7 +1999,7 @@ struct mem_cgroup *lock_page_memcg(struct page *pag= e) if (mem_cgroup_disabled()) return NULL; again: - memcg =3D page->mem_cgroup; + memcg =3D head->mem_cgroup; if (unlikely(!memcg)) return NULL; =20 @@ -2006,7 +2007,7 @@ struct mem_cgroup *lock_page_memcg(struct page *pag= e) return memcg; =20 spin_lock_irqsave(&memcg->move_lock, flags); - if (memcg !=3D page->mem_cgroup) { + if (memcg !=3D head->mem_cgroup) { spin_unlock_irqrestore(&memcg->move_lock, flags); goto again; } @@ -2049,7 +2050,9 @@ void __unlock_page_memcg(struct mem_cgroup *memcg) */ void unlock_page_memcg(struct page *page) { - __unlock_page_memcg(page->mem_cgroup); + struct page *head =3D compound_head(page); + + __unlock_page_memcg(head->mem_cgroup); } EXPORT_SYMBOL(unlock_page_memcg); =20 --=20 2.26.0