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sched: Mark parent and real_parent as __rcu

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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>
This commit is contained in:
Kees Cook
2011-12-14 14:39:26 -08:00
committed by Ingo Molnar
parent 6a54aebf69
commit abd63bc3a0
1 changed files with 2 additions and 2 deletions
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4
include/linux/sched.h
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@@ -1330,8 +1330,8 @@ struct task_struct {
* older sibling, respectively. (p->father can be replaced with * older sibling, respectively. (p->father can be replaced with
* p->real_parent->pid) * p->real_parent->pid)
*/ */
struct task_struct *real_parent; /* real parent process */ struct task_struct __rcu *real_parent; /* real parent process */
struct task_struct *parent; /* recipient of SIGCHLD, wait4() reports */ struct task_struct __rcu *parent; /* recipient of SIGCHLD, wait4() reports */
/* /*
* children/sibling forms the list of my natural children * children/sibling forms the list of my natural children
*/ */