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Date: Wed, 14 Dec 2011 14:39:26 -0800
From: Kees Cook <keescook@...omium.org>
To: linux-kernel@...r.kernel.org
Cc: Ingo Molnar <mingo@...e.hu>, Peter Zijlstra <peterz@...radead.org>,
"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
Al Viro <viro@...iv.linux.org.uk>
Subject: [PATCH] sched: mark parent and real_parent as __rcu
The parent and real_parent pointers should be considered __rcu, since
they should be held under either tasklist_lock or rcu_read_lock.
Signed-off-by: Kees Cook <keescook@...omium.org>
---
include/linux/sched.h | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 1c4f3e9..b05e8af 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1315,8 +1315,8 @@ struct task_struct {
* older sibling, respectively. (p->father can be replaced with
* p->real_parent->pid)
*/
- struct task_struct *real_parent; /* real parent process */
- struct task_struct *parent; /* recipient of SIGCHLD, wait4() reports */
+ struct task_struct __rcu *real_parent; /* real parent process */
+ struct task_struct __rcu *parent; /* recipient of SIGCHLD, wait4() reports */
/*
* children/sibling forms the list of my natural children
*/
--
1.7.0.4
--
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