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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7E77EC433F5 for ; Mon, 28 Mar 2022 07:11:38 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id E44218D0002; Mon, 28 Mar 2022 03:11:37 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id DCCA88D0001; Mon, 28 Mar 2022 03:11:37 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C97268D0002; Mon, 28 Mar 2022 03:11:37 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0148.hostedemail.com [216.40.44.148]) by kanga.kvack.org (Postfix) with ESMTP id BA9498D0001 for ; Mon, 28 Mar 2022 03:11:37 -0400 (EDT) Received: from smtpin27.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 6F5D08249980 for ; Mon, 28 Mar 2022 07:11:37 +0000 (UTC) X-FDA: 79292924634.27.7EF22A3 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by imf25.hostedemail.com (Postfix) with ESMTP id 760C3A003E for ; Mon, 28 Mar 2022 07:11:36 +0000 (UTC) Received: from canpemm500002.china.huawei.com (unknown [172.30.72.53]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4KRkNM0qqXzfZRZ; Mon, 28 Mar 2022 15:09:55 +0800 (CST) Received: from [10.174.177.76] (10.174.177.76) by canpemm500002.china.huawei.com (7.192.104.244) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Mon, 28 Mar 2022 15:11:31 +0800 Subject: Re: [PATCH 1/2] mm/vmscan: reclaim only affects managed_zones To: Wei Yang CC: , , , , Andrew Morton References: <20220327024101.10378-1-richard.weiyang@gmail.com> From: Miaohe Lin Message-ID: <2028e2ed-7084-2ba0-faaf-dd71249c8334@huawei.com> Date: Mon, 28 Mar 2022 15:11:31 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 MIME-Version: 1.0 In-Reply-To: <20220327024101.10378-1-richard.weiyang@gmail.com> Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.174.177.76] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To canpemm500002.china.huawei.com (7.192.104.244) X-CFilter-Loop: Reflected X-Rspamd-Server: rspam09 X-Rspam-User: X-Stat-Signature: unzpsm4kexqqyyxg3rh4woqtrdxf7dad Authentication-Results: imf25.hostedemail.com; dkim=none; dmarc=pass (policy=quarantine) header.from=huawei.com; spf=pass (imf25.hostedemail.com: domain of linmiaohe@huawei.com designates 45.249.212.187 as permitted sender) smtp.mailfrom=linmiaohe@huawei.com X-Rspamd-Queue-Id: 760C3A003E X-HE-Tag: 1648451496-798092 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: On 2022/3/27 10:41, Wei Yang wrote: > As mentioned in commit 6aa303defb74 ("mm, vmscan: only allocate and > reclaim from zones with pages managed by the buddy allocator") , reclaim > only affects managed_zones. > > Let's adjust the code and comment accordingly. > > Signed-off-by: Wei Yang Looks good to me. Thanks. Reviewed-by: Miaohe Lin > --- > mm/vmscan.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/mm/vmscan.c b/mm/vmscan.c > index 7ad54b770bb1..89745cf34386 100644 > --- a/mm/vmscan.c > +++ b/mm/vmscan.c > @@ -1031,7 +1031,7 @@ static bool skip_throttle_noprogress(pg_data_t *pgdat) > for (i = 0; i < MAX_NR_ZONES; i++) { > struct zone *zone = pgdat->node_zones + i; > > - if (!populated_zone(zone)) > + if (!managed_zone(zone)) > continue; > > reclaimable += zone_reclaimable_pages(zone); > @@ -3912,7 +3912,7 @@ static bool pgdat_balanced(pg_data_t *pgdat, int order, int highest_zoneidx) > } > > /* > - * If a node has no populated zone within highest_zoneidx, it does not > + * If a node has no managed zone within highest_zoneidx, it does not > * need balancing by definition. This can happen if a zone-restricted > * allocation tries to wake a remote kswapd. > */ >