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=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,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 C66F9C46462 for ; Wed, 1 Aug 2018 10:58:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 82DD320894 for ; Wed, 1 Aug 2018 10:58:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 82DD320894 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=baidu.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388552AbeHAMne (ORCPT ); Wed, 1 Aug 2018 08:43:34 -0400 Received: from mx59.baidu.com ([61.135.168.59]:11936 "EHLO tc-sys-mailedm01.tc.baidu.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2387716AbeHAMne (ORCPT ); Wed, 1 Aug 2018 08:43:34 -0400 Received: from localhost (cp01-cos-dev01.cp01.baidu.com [10.92.119.46]) by tc-sys-mailedm01.tc.baidu.com (Postfix) with ESMTP id 1FD682040051; Wed, 1 Aug 2018 18:48:36 +0800 (CST) From: Li RongQing To: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Alexander Viro , Johannes Weiner , Michal Hocko , Vladimir Davydov Subject: [PATCH 1/2] mm: add a function to return a bdi_writeback dirty page statistic Date: Wed, 1 Aug 2018 18:48:35 +0800 Message-Id: <1533120516-18279-1-git-send-email-lirongqing@baidu.com> X-Mailer: git-send-email 1.7.10.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org this is a preparation to optimise a full writeback when reclaim memory Signed-off-by: Zhang Yu Signed-off-by: Li RongQing --- include/linux/memcontrol.h | 2 +- mm/memcontrol.c | 6 ++++++ 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 6c6fb116e925..58e29555ac81 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -1141,7 +1141,7 @@ struct wb_domain *mem_cgroup_wb_domain(struct bdi_writeback *wb); void mem_cgroup_wb_stats(struct bdi_writeback *wb, unsigned long *pfilepages, unsigned long *pheadroom, unsigned long *pdirty, unsigned long *pwriteback); - +unsigned long mem_cgroup_wb_dirty_stats(struct bdi_writeback *wb); #else /* CONFIG_CGROUP_WRITEBACK */ static inline struct wb_domain *mem_cgroup_wb_domain(struct bdi_writeback *wb) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 8c0280b3143e..82d3061e91d1 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3640,6 +3640,12 @@ void mem_cgroup_wb_stats(struct bdi_writeback *wb, unsigned long *pfilepages, } } +unsigned long mem_cgroup_wb_dirty_stats(struct bdi_writeback *wb) +{ + struct mem_cgroup *memcg = mem_cgroup_from_css(wb->memcg_css); + + return memcg_page_state(memcg, NR_FILE_DIRTY); +} #else /* CONFIG_CGROUP_WRITEBACK */ static int memcg_wb_domain_init(struct mem_cgroup *memcg, gfp_t gfp) -- 2.16.2