Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966337AbZLHVSM (ORCPT ); Tue, 8 Dec 2009 16:18:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S966306AbZLHVQm (ORCPT ); Tue, 8 Dec 2009 16:16:42 -0500 Received: from one.firstfloor.org ([213.235.205.2]:49565 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966287AbZLHVQc (ORCPT ); Tue, 8 Dec 2009 16:16:32 -0500 From: Andi Kleen References: <200912081016.198135742@firstfloor.org> In-Reply-To: <200912081016.198135742@firstfloor.org> To: fengguang.wu@intel.com, kosaki.motohiro@jp.fujitsu.com, hugh.dickins@tiscali.co.uk, nishimura@mxp.nes.nec.co.jp, balbir@linux.vnet.ibm.com, fengguang.wu@intel.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH] [22/31] memcg: add accessor to mem_cgroup.css Message-Id: <20091208211638.81C35B151F@basil.firstfloor.org> Date: Tue, 8 Dec 2009 22:16:38 +0100 (CET) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2105 Lines: 65 From: Wu Fengguang So that an outside user can free the reference count grabbed by try_get_mem_cgroup_from_page(). CC: KOSAKI Motohiro CC: Hugh Dickins CC: Daisuke Nishimura CC: Balbir Singh Acked-by: KAMEZAWA Hiroyuki Signed-off-by: Wu Fengguang Signed-off-by: Andi Kleen --- include/linux/memcontrol.h | 7 +++++++ mm/memcontrol.c | 5 +++++ 2 files changed, 12 insertions(+) Index: linux/include/linux/memcontrol.h =================================================================== --- linux.orig/include/linux/memcontrol.h +++ linux/include/linux/memcontrol.h @@ -81,6 +81,8 @@ int mm_match_cgroup(const struct mm_stru return cgroup == mem; } +extern struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem); + extern int mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr); extern void mem_cgroup_end_migration(struct mem_cgroup *mem, @@ -206,6 +208,11 @@ static inline int task_in_mem_cgroup(str return 1; } +static inline struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem) +{ + return NULL; +} + static inline int mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr) { Index: linux/mm/memcontrol.c =================================================================== --- linux.orig/mm/memcontrol.c +++ linux/mm/memcontrol.c @@ -282,6 +282,11 @@ mem_cgroup_zoneinfo(struct mem_cgroup *m return &mem->info.nodeinfo[nid]->zoneinfo[zid]; } +struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem) +{ + return &mem->css; +} + static struct mem_cgroup_per_zone * page_cgroup_zoneinfo(struct page_cgroup *pc) { -- 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/