From 9363b9f23c9cc36cc8ef6c05fdf879ee4a96ae92 Mon Sep 17 00:00:00 2001
From: Balbir Singh <balbir@linux.vnet.ibm.com>
Date: Wed, 15 Oct 2008 22:01:05 -0700
Subject: memrlimit: cgroup mm owner callback changes to add task info

This patch adds an additional field to the mm_owner callbacks. This field
is required to get to the mm that changed. Hold mmap_sem in write mode
before calling the mm_owner_changed callback

[hugh@veritas.com: fix mmap_sem deadlock]
Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: Sudhir Kumar <skumar@linux.vnet.ibm.com>
Cc: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Cc: Paul Menage <menage@google.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Pavel Emelianov <xemul@openvz.org>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 include/linux/cgroup.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'include')

diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index c98dd7cb707..30934e4bfaa 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -326,7 +326,8 @@ struct cgroup_subsys {
 	 */
 	void (*mm_owner_changed)(struct cgroup_subsys *ss,
 					struct cgroup *old,
-					struct cgroup *new);
+					struct cgroup *new,
+					struct task_struct *p);
 	int subsys_id;
 	int active;
 	int disabled;
-- 
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