reparent_thread: use same_thread_group()

Trivial, use same_thread_group() in reparent_thread().

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/kernel/exit.c b/kernel/exit.c
index 4035d39..413c81e 100644 (file)
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -722,7 +722,7 @@ reparent_thread(struct task_struct *p, struct task_struct *father, int traced)
        /* If this is a threaded reparent there is no need to
         * notify anyone anything has happened.
         */
-       if (p->real_parent->group_leader == father->group_leader)
+       if (same_thread_group(p->real_parent, father))
                return;
 
        /* We don't want people slaying init.  */