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,URIBL_BLOCKED,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 DF1DEC47E49 for ; Tue, 22 Oct 2019 14:48:31 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 9A9B421920 for ; Tue, 22 Oct 2019 14:48:31 +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="06y95Xcc" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9A9B421920 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 315F16B000D; Tue, 22 Oct 2019 10:48:24 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 29C3E6B000E; Tue, 22 Oct 2019 10:48:24 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 18AC26B0010; Tue, 22 Oct 2019 10:48:24 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0122.hostedemail.com [216.40.44.122]) by kanga.kvack.org (Postfix) with ESMTP id EC87F6B000D for ; Tue, 22 Oct 2019 10:48:23 -0400 (EDT) Received: from smtpin24.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with SMTP id 8378E180AD815 for ; Tue, 22 Oct 2019 14:48:23 +0000 (UTC) X-FDA: 76071701286.24.drink72_664e977cd781a X-HE-Tag: drink72_664e977cd781a X-Filterd-Recvd-Size: 6415 Received: from mail-qk1-f195.google.com (mail-qk1-f195.google.com [209.85.222.195]) by imf45.hostedemail.com (Postfix) with ESMTP for ; Tue, 22 Oct 2019 14:48:22 +0000 (UTC) Received: by mail-qk1-f195.google.com with SMTP id e66so16455594qkf.13 for ; Tue, 22 Oct 2019 07:48:22 -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=hxh0IM0xlU3vTA2ZQpF8tyo6AUPcwm84qmU6yKeg7AE=; b=06y95XccQ47sNAPL8uhNFIISYVKYHbZBLHpvJ//HY7ED8ifACzizBBmrCeGvn7/4Zg +YEyppc3xQfaKFCGcZGNq7Cnhsw2R/CxzKDe4Z0cpUfaorTp8h+nilk9ExL4dkXX1eKG LioBdrUgywnZDq6EYMusUNOgI/QGFG052qREgRAU78aOQji59fTFPkF3PawYCXt03wZu 5TG5pEPCsdOiwww9jnEJrkE4SxCF95zziI8twhfhs0vnzft25kpiI0nfscdVsvij1QUq 6OnbyDY41FGYeL+V4lPOwsAo/+PDowshd1lLkMCXC6uycDjmx0+3I/MAyBvB46gto8kS yN5w== 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=hxh0IM0xlU3vTA2ZQpF8tyo6AUPcwm84qmU6yKeg7AE=; b=gJTmeNDiqe25yaoF9XCDBL4EiS1ZiupUDBSxsVbuDTiFe20E7sWabFfRZdPBycbegp dd3l1qR07lS8UJJOKCbVTEF1kOjHF9hy1s/0sbJ5i+OjJOe8utt9is64AdJBsZz7vxac 955jYI+je+IohyUMLNtvpNJ4ys6GbequTC3zS8/vD9lBwDllCefhWdQo4MeOfRdldlEr kyqVV+GS9BmjmgyRGbC5nioZsFQL8MJFMxF85OMRPSxap2PqJHpHTt0Lzi/iem4SmtUW g/foAoUQpdxZaJhteETM1a1BT/W62YJymDqjFmDnt73AIYyKQczIcpJn3lbloWxVhZj3 xHVQ== X-Gm-Message-State: APjAAAWLRfL5L/F8AEDd/5J2dta2cjOurTrBSIp7WnuQgyvQz2JKF5q2 LldNnYSW4bGASDx6jNT9QZwoEg== X-Google-Smtp-Source: APXvYqxRGyy7EdMQXI+J2blgh97/sGUFZVM/ZtaDfoFqFo8q3zdoWEmxTaMWpL4oHjNuZN4jtFu4pw== X-Received: by 2002:a37:aac3:: with SMTP id t186mr3083773qke.221.1571755702048; Tue, 22 Oct 2019 07:48:22 -0700 (PDT) Received: from localhost ([2620:10d:c091:500::3:10ad]) by smtp.gmail.com with ESMTPSA id x133sm8682703qka.44.2019.10.22.07.48.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Oct 2019 07:48:21 -0700 (PDT) From: Johannes Weiner To: Andrew Morton Cc: Michal Hocko , linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-team@fb.com Subject: [PATCH 6/8] mm: vmscan: turn shrink_node_memcg() into shrink_lruvec() Date: Tue, 22 Oct 2019 10:48:01 -0400 Message-Id: <20191022144803.302233-7-hannes@cmpxchg.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191022144803.302233-1-hannes@cmpxchg.org> References: <20191022144803.302233-1-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: A lruvec holds LRU pages owned by a certain NUMA node and cgroup. Instead of awkwardly passing around a combination of a pgdat and a memcg pointer, pass down the lruvec as soon as we can look it up. Nested callers that need to access node or cgroup properties can look them them up if necessary, but there are only a few cases. Signed-off-by: Johannes Weiner --- mm/vmscan.c | 21 ++++++++++----------- 1 file changed, 10 insertions(+), 11 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 235d1fc72311..db073b40c432 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -2280,9 +2280,10 @@ enum scan_balance { * nr[0] =3D anon inactive pages to scan; nr[1] =3D anon active pages to= scan * nr[2] =3D file inactive pages to scan; nr[3] =3D file active pages to= scan */ -static void get_scan_count(struct lruvec *lruvec, struct mem_cgroup *mem= cg, - struct scan_control *sc, unsigned long *nr) +static void get_scan_count(struct lruvec *lruvec, struct scan_control *s= c, + unsigned long *nr) { + struct mem_cgroup *memcg =3D lruvec_memcg(lruvec); int swappiness =3D mem_cgroup_swappiness(memcg); struct zone_reclaim_stat *reclaim_stat =3D &lruvec->reclaim_stat; u64 fraction[2]; @@ -2530,13 +2531,8 @@ static void get_scan_count(struct lruvec *lruvec, = struct mem_cgroup *memcg, } } =20 -/* - * This is a basic per-node page freer. Used by both kswapd and direct = reclaim. - */ -static void shrink_node_memcg(struct pglist_data *pgdat, struct mem_cgro= up *memcg, - struct scan_control *sc) +static void shrink_lruvec(struct lruvec *lruvec, struct scan_control *sc= ) { - struct lruvec *lruvec =3D mem_cgroup_lruvec(memcg, pgdat); unsigned long nr[NR_LRU_LISTS]; unsigned long targets[NR_LRU_LISTS]; unsigned long nr_to_scan; @@ -2546,7 +2542,7 @@ static void shrink_node_memcg(struct pglist_data *p= gdat, struct mem_cgroup *memc struct blk_plug plug; bool scan_adjusted; =20 - get_scan_count(lruvec, memcg, sc, nr); + get_scan_count(lruvec, sc, nr); =20 /* Record the original scan target for proportional adjustments later *= / memcpy(targets, nr, sizeof(nr)); @@ -2741,6 +2737,7 @@ static bool shrink_node(pg_data_t *pgdat, struct sc= an_control *sc) =20 memcg =3D mem_cgroup_iter(root, NULL, NULL); do { + struct lruvec *lruvec =3D mem_cgroup_lruvec(memcg, pgdat); unsigned long reclaimed; unsigned long scanned; =20 @@ -2777,7 +2774,8 @@ static bool shrink_node(pg_data_t *pgdat, struct sc= an_control *sc) =20 reclaimed =3D sc->nr_reclaimed; scanned =3D sc->nr_scanned; - shrink_node_memcg(pgdat, memcg, sc); + + shrink_lruvec(lruvec, sc); =20 shrink_slab(sc->gfp_mask, pgdat->node_id, memcg, sc->priority); @@ -3281,6 +3279,7 @@ unsigned long mem_cgroup_shrink_node(struct mem_cgr= oup *memcg, pg_data_t *pgdat, unsigned long *nr_scanned) { + struct lruvec *lruvec =3D mem_cgroup_lruvec(memcg, pgdat); struct scan_control sc =3D { .nr_to_reclaim =3D SWAP_CLUSTER_MAX, .target_mem_cgroup =3D memcg, @@ -3307,7 +3306,7 @@ unsigned long mem_cgroup_shrink_node(struct mem_cgr= oup *memcg, * will pick up pages from other mem cgroup's as well. We hack * the priority and make it zero. */ - shrink_node_memcg(pgdat, memcg, &sc); + shrink_lruvec(lruvec, &sc); =20 trace_mm_vmscan_memcg_softlimit_reclaim_end( cgroup_ino(memcg->css.cgroup), --=20 2.23.0