Commit abd63bc3 authored Dec 14, 2011 by Kees Cook Committed by Ingo Molnar Dec 15, 2011

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@chromium.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Link: http://lkml.kernel.org/r/20111214223925.GA27578@www.outflux.net

Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 6a54aebf

include/linux/sched.h

+2 −2

Original line number	Diff line number	Diff line
		@@ -1330,8 +1330,8 @@ 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
		*/