From patchwork Wed Dec 25 09:04:25 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Shi X-Patchwork-Id: 11310039 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 0B179138C for ; Wed, 25 Dec 2019 09:05:03 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D61EB20643 for ; Wed, 25 Dec 2019 09:05:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D61EB20643 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 789E78E000B; Wed, 25 Dec 2019 04:04:51 -0500 (EST) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 6C2A08E0001; Wed, 25 Dec 2019 04:04:51 -0500 (EST) 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 5D7D08E000B; Wed, 25 Dec 2019 04:04:51 -0500 (EST) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0221.hostedemail.com [216.40.44.221]) by kanga.kvack.org (Postfix) with ESMTP id 44E3F8E0001 for ; Wed, 25 Dec 2019 04:04:51 -0500 (EST) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with SMTP id 109D7180AD80F for ; Wed, 25 Dec 2019 09:04:51 +0000 (UTC) X-FDA: 76303078782.11.fang11_646906beb523e X-Spam-Summary: 2,0,0,84fd0f4e26362f1e,d41d8cd98f00b204,alex.shi@linux.alibaba.com,:cgroups@vger.kernel.org:linux-kernel@vger.kernel.org::akpm@linux-foundation.org:mgorman@techsingularity.net:tj@kernel.org:hughd@google.com:khlebnikov@yandex-team.ru:daniel.m.jordan@oracle.com:yang.shi@linux.alibaba.com:willy@infradead.org:shakeelb@google.com:hannes@cmpxchg.org:mhocko@kernel.org:vdavydov.dev@gmail.com,RULES_HIT:41:355:379:541:800:960:973:988:989:1260:1261:1345:1359:1431:1437:1534:1541:1711:1730:1747:1777:1792:2393:2559:2562:2901:3138:3139:3140:3141:3142:3352:3866:4321:5007:6114:6119:6261:6642:6737:7514:7903:10004:11026:11473:11658:11914:12043:12048:12296:12297:12438:12555:12895:12986:13069:13311:13357:13846:14096:14181:14384:14394:14721:14915:21060:21080:21451:21627:21966:21990:30054:30070,0,RBL:115.124.30.56:@linux.alibaba.com:.lbl8.mailshell.net-62.20.2.100 64.201.201.201,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:none,Custo m_rules: X-HE-Tag: fang11_646906beb523e X-Filterd-Recvd-Size: 3330 Received: from out30-56.freemail.mail.aliyun.com (out30-56.freemail.mail.aliyun.com [115.124.30.56]) by imf47.hostedemail.com (Postfix) with ESMTP for ; Wed, 25 Dec 2019 09:04:49 +0000 (UTC) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R631e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04420;MF=alex.shi@linux.alibaba.com;NM=1;PH=DS;RN=15;SR=0;TI=SMTPD_---0TltG7dO_1577264684; Received: from localhost(mailfrom:alex.shi@linux.alibaba.com fp:SMTPD_---0TltG7dO_1577264684) by smtp.aliyun-inc.com(127.0.0.1); Wed, 25 Dec 2019 17:04:45 +0800 From: Alex Shi To: cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org, mgorman@techsingularity.net, tj@kernel.org, hughd@google.com, khlebnikov@yandex-team.ru, daniel.m.jordan@oracle.com, yang.shi@linux.alibaba.com, willy@infradead.org, shakeelb@google.com, hannes@cmpxchg.org Cc: Michal Hocko , Vladimir Davydov Subject: [PATCH v7 09/10] mm/lru: add debug checking for page memcg moving Date: Wed, 25 Dec 2019 17:04:25 +0800 Message-Id: <1577264666-246071-10-git-send-email-alex.shi@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1577264666-246071-1-git-send-email-alex.shi@linux.alibaba.com> References: <1577264666-246071-1-git-send-email-alex.shi@linux.alibaba.com> 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: This debug patch could give some clues if there are sth out of consideration. Signed-off-by: Alex Shi Cc: Johannes Weiner Cc: Michal Hocko Cc: Vladimir Davydov Cc: Andrew Morton Cc: cgroups@vger.kernel.org Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org --- mm/compaction.c | 4 ++++ mm/memcontrol.c | 8 ++++++++ 2 files changed, 12 insertions(+) diff --git a/mm/compaction.c b/mm/compaction.c index 8c0a2da217d8..f47820355b66 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -971,6 +971,10 @@ static bool too_many_isolated(pg_data_t *pgdat) compact_lock_irqsave(&lruvec->lru_lock, &flags, cc); locked_lruvec = lruvec; +#ifdef CONFIG_MEMCG + if (!mem_cgroup_disabled()) + VM_BUG_ON_PAGE(lruvec_memcg(lruvec) != page->mem_cgroup, page); +#endif /* Try get exclusive access under lock */ if (!skip_updated) { skip_updated = true; diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 1b69e27d1b9f..33bf086faed0 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1247,6 +1247,10 @@ struct lruvec *lock_page_lruvec_irq(struct page *page) lruvec = mem_cgroup_lruvec(memcg, page_pgdat(page)); spin_lock_irq(&lruvec->lru_lock); +#ifdef CONFIG_MEMCG + if (!mem_cgroup_disabled()) + VM_BUG_ON_PAGE(lruvec_memcg(lruvec) != page->mem_cgroup, page); +#endif return lruvec; } @@ -1259,6 +1263,10 @@ struct lruvec *lock_page_lruvec_irqsave(struct page *page, unsigned long *flags) lruvec = mem_cgroup_lruvec(memcg, page_pgdat(page)); spin_lock_irqsave(&lruvec->lru_lock, *flags); +#ifdef CONFIG_MEMCG + if (!mem_cgroup_disabled()) + VM_BUG_ON_PAGE(lruvec_memcg(lruvec) != page->mem_cgroup, page); +#endif return lruvec; }