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=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,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 548D0C3A5A4 for ; Thu, 22 Aug 2019 17:50:45 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 24B8B2133F for ; Thu, 22 Aug 2019 17:50:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 24B8B2133F 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 7CE756B0346; Thu, 22 Aug 2019 13:50:43 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 77F546B0347; Thu, 22 Aug 2019 13:50:43 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 672BA6B0348; Thu, 22 Aug 2019 13:50:43 -0400 (EDT) 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 34C1F6B0347 for ; Thu, 22 Aug 2019 13:50:43 -0400 (EDT) Received: from smtpin29.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with SMTP id C0E028248AA7 for ; Thu, 22 Aug 2019 17:50:42 +0000 (UTC) X-FDA: 75850803924.29.slope51_232973ae3993c X-HE-Tag: slope51_232973ae3993c X-Filterd-Recvd-Size: 4020 Received: from out30-43.freemail.mail.aliyun.com (out30-43.freemail.mail.aliyun.com [115.124.30.43]) by imf38.hostedemail.com (Postfix) with ESMTP for ; Thu, 22 Aug 2019 17:50:41 +0000 (UTC) X-Alimail-AntiSpam:AC=PASS;BC=-1|-1;BR=01201311R161e4;CH=green;DM=||false|;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04423;MF=yang.shi@linux.alibaba.com;NM=1;PH=DS;RN=12;SR=0;TI=SMTPD_---0Ta9PNTk_1566496230; Received: from e19h19392.et15sqa.tbsite.net(mailfrom:yang.shi@linux.alibaba.com fp:SMTPD_---0Ta9PNTk_1566496230) by smtp.aliyun-inc.com(127.0.0.1); Fri, 23 Aug 2019 01:50:37 +0800 From: Yang Shi To: kirill.shutemov@linux.intel.com, ktkhai@virtuozzo.com, hannes@cmpxchg.org, mhocko@suse.com, hughd@google.com, shakeelb@google.com, rientjes@google.com, cai@lca.pw, akpm@linux-foundation.org Cc: yang.shi@linux.alibaba.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [v6 PATCH 2/4] mm: move mem_cgroup_uncharge out of __page_cache_release() Date: Fri, 23 Aug 2019 01:50:25 +0800 Message-Id: <1566496227-84952-3-git-send-email-yang.shi@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1566496227-84952-1-git-send-email-yang.shi@linux.alibaba.com> References: <1566496227-84952-1-git-send-email-yang.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: The later patch would make THP deferred split shrinker memcg aware, but it needs page->mem_cgroup information in THP destructor, which is called after mem_cgroup_uncharge() now. So, move mem_cgroup_uncharge() from __page_cache_release() to compound page destructor, which is called by both THP and other compound pages except HugeTLB. And call it in __put_single_page() for single order page. Suggested-by: "Kirill A . Shutemov" Cc: Johannes Weiner Cc: Michal Hocko Cc: Hugh Dickins Cc: Shakeel Butt Cc: David Rientjes Cc: Qian Cai Acked-by: Kirill A. Shutemov Reviewed-by: Kirill Tkhai Signed-off-by: Yang Shi --- mm/page_alloc.c | 1 + mm/swap.c | 2 +- mm/vmscan.c | 6 ++---- 3 files changed, 4 insertions(+), 5 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index df02a88..1d1c5d3 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -670,6 +670,7 @@ static void bad_page(struct page *page, const char *reason, void free_compound_page(struct page *page) { + mem_cgroup_uncharge(page); __free_pages_ok(page, compound_order(page)); } diff --git a/mm/swap.c b/mm/swap.c index ae30039..d4242c8 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -71,12 +71,12 @@ static void __page_cache_release(struct page *page) spin_unlock_irqrestore(&pgdat->lru_lock, flags); } __ClearPageWaiters(page); - mem_cgroup_uncharge(page); } static void __put_single_page(struct page *page) { __page_cache_release(page); + mem_cgroup_uncharge(page); free_unref_page(page); } diff --git a/mm/vmscan.c b/mm/vmscan.c index dbdc46a..b1b5e5f 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1490,10 +1490,9 @@ static unsigned long shrink_page_list(struct list_head *page_list, * Is there need to periodically free_page_list? It would * appear not as the counts should be low */ - if (unlikely(PageTransHuge(page))) { - mem_cgroup_uncharge(page); + if (unlikely(PageTransHuge(page))) (*get_compound_page_dtor(page))(page); - } else + else list_add(&page->lru, &free_pages); continue; @@ -1914,7 +1913,6 @@ static unsigned noinline_for_stack move_pages_to_lru(struct lruvec *lruvec, if (unlikely(PageCompound(page))) { spin_unlock_irq(&pgdat->lru_lock); - mem_cgroup_uncharge(page); (*get_compound_page_dtor(page))(page); spin_lock_irq(&pgdat->lru_lock); } else -- 1.8.3.1