Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755276AbbKXVw0 (ORCPT ); Tue, 24 Nov 2015 16:52:26 -0500 Received: from gum.cmpxchg.org ([85.214.110.215]:45744 "EHLO gum.cmpxchg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755231AbbKXVwX (ORCPT ); Tue, 24 Nov 2015 16:52:23 -0500 From: Johannes Weiner To: Andrew Morton Cc: David Miller , Vladimir Davydov , Michal Hocko , Tejun Heo , Eric Dumazet , netdev@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-team@fb.com Subject: [PATCH 01/13] mm: memcontrol: export root_mem_cgroup Date: Tue, 24 Nov 2015 16:51:53 -0500 Message-Id: <1448401925-22501-2-git-send-email-hannes@cmpxchg.org> X-Mailer: git-send-email 2.6.2 In-Reply-To: <1448401925-22501-1-git-send-email-hannes@cmpxchg.org> References: <1448401925-22501-1-git-send-email-hannes@cmpxchg.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2473 Lines: 72 A later patch will need this symbol in files other than memcontrol.c, so export it now and replace mem_cgroup_root_css at the same time. Signed-off-by: Johannes Weiner Acked-by: Michal Hocko Acked-by: David S. Miller Reviewed-by: Vladimir Davydov --- include/linux/memcontrol.h | 3 ++- mm/backing-dev.c | 2 +- mm/memcontrol.c | 5 ++--- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 9d5472b..320b690 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -265,7 +265,8 @@ struct mem_cgroup { struct mem_cgroup_per_node *nodeinfo[0]; /* WARNING: nodeinfo must be the last member here */ }; -extern struct cgroup_subsys_state *mem_cgroup_root_css; + +extern struct mem_cgroup *root_mem_cgroup; /** * mem_cgroup_events - count memory events against a cgroup diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 9160853..fdc6f4d 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -707,7 +707,7 @@ static int cgwb_bdi_init(struct backing_dev_info *bdi) ret = wb_init(&bdi->wb, bdi, 1, GFP_KERNEL); if (!ret) { - bdi->wb.memcg_css = mem_cgroup_root_css; + bdi->wb.memcg_css = &root_mem_cgroup->css; bdi->wb.blkcg_css = blkcg_root_css; } return ret; diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 79a29d5..f6ea649 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -76,9 +76,9 @@ struct cgroup_subsys memory_cgrp_subsys __read_mostly; EXPORT_SYMBOL(memory_cgrp_subsys); +struct mem_cgroup *root_mem_cgroup __read_mostly; + #define MEM_CGROUP_RECLAIM_RETRIES 5 -static struct mem_cgroup *root_mem_cgroup __read_mostly; -struct cgroup_subsys_state *mem_cgroup_root_css __read_mostly; /* Whether the swap controller is active */ #ifdef CONFIG_MEMCG_SWAP @@ -4217,7 +4217,6 @@ mem_cgroup_css_alloc(struct cgroup_subsys_state *parent_css) /* root ? */ if (parent_css == NULL) { root_mem_cgroup = memcg; - mem_cgroup_root_css = &memcg->css; page_counter_init(&memcg->memory, NULL); memcg->high = PAGE_COUNTER_MAX; memcg->soft_limit = PAGE_COUNTER_MAX; -- 2.6.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/