From b4f48b6363c81ca743ef46943ef23fd72e60f679 Mon Sep 17 00:00:00 2001
From: Paul Menage <menage@google.com>
Date: Thu, 18 Oct 2007 23:39:33 -0700
Subject: Task Control Groups: add fork()/exit() hooks

This adds the necessary hooks to the fork() and exit() paths to ensure
that new children inherit their parent's cgroup assignments, and that
exiting processes release reference counts on their cgroups.

Signed-off-by: Paul Menage <menage@google.com>
Cc: Serge E. Hallyn <serue@us.ibm.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Paul Jackson <pj@sgi.com>
Cc: Kirill Korotaev <dev@openvz.org>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: Srivatsa Vaddagiri <vatsa@in.ibm.com>
Cc: Cedric Le Goater <clg@fr.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 kernel/exit.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'kernel/exit.c')

diff --git a/kernel/exit.c b/kernel/exit.c
index 2c704c86edb..44ff6147556 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -32,6 +32,7 @@
 #include <linux/delayacct.h>
 #include <linux/freezer.h>
 #include <linux/cpuset.h>
+#include <linux/cgroup.h>
 #include <linux/syscalls.h>
 #include <linux/signal.h>
 #include <linux/posix-timers.h>
@@ -973,6 +974,7 @@ fastcall NORET_TYPE void do_exit(long code)
 	check_stack_usage();
 	exit_thread();
 	cpuset_exit(tsk);
+	cgroup_exit(tsk, 1);
 	exit_keys(tsk);
 
 	if (group_dead && tsk->signal->leader)
-- 
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