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Message-Id: <20081203135010.18c1c8b3.kamezawa.hiroyu@jp.fujitsu.com>
Date: Wed, 3 Dec 2008 13:50:10 +0900
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc: "linux-mm@...ck.org" <linux-mm@...ck.org>,
"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
"balbir@...ux.vnet.ibm.com" <balbir@...ux.vnet.ibm.com>,
"nishimura@....nes.nec.co.jp" <nishimura@....nes.nec.co.jp>,
knikanth@...e.de,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/21] memcg-check-group-leader-fix.patch
Remove unnecessary codes (...fragments of not-implemented functionalilty...)
Changelog:
- removed all unused fragments.
- added comment.
Reported-by: Nikanth Karthikesan <knikanth@...e.de>
Signed-off-by: Nikanth Karthikesan <knikanth@...e.de>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Index: mmotm-2.6.28-Nov30/mm/memcontrol.c
===================================================================
--- mmotm-2.6.28-Nov30.orig/mm/memcontrol.c
+++ mmotm-2.6.28-Nov30/mm/memcontrol.c
@@ -2008,25 +2008,10 @@ static void mem_cgroup_move_task(struct
struct cgroup *old_cont,
struct task_struct *p)
{
- struct mm_struct *mm;
- struct mem_cgroup *mem, *old_mem;
-
- mm = get_task_mm(p);
- if (mm == NULL)
- return;
-
- mem = mem_cgroup_from_cont(cont);
- old_mem = mem_cgroup_from_cont(old_cont);
-
/*
- * Only thread group leaders are allowed to migrate, the mm_struct is
- * in effect owned by the leader
+ * FIXME: It's better to move charges of this process from old
+ * memcg to new memcg. But it's just on TODO-List now.
*/
- if (!thread_group_leader(p))
- goto out;
-
-out:
- mmput(mm);
}
struct cgroup_subsys mem_cgroup_subsys = {
--
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