From 3b6362b833b9f7a9d4222cf1bb35f99c411abb31 Mon Sep 17 00:00:00 2001
From: Oleg Nesterov <oleg@tv-sign.ru>
Date: Sat, 2 Sep 2006 21:22:16 +0400
Subject: [PATCH] [PATCH] eligible_child: remove an obsolete ->tgid check

It is not possible to find a sub-thread in ->children/->ptrace_children
lists, ptrace_attach() does not allow to attach to sub-threads.

Even if it was possible to ptrace the task from the same thread group,
we can't allow to release ->group_leader while there are others (ptracer)
threads in the same group.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 kernel/exit.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/exit.c b/kernel/exit.c
index a4c19a52ce46..d891883420f7 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1053,7 +1053,7 @@ static int eligible_child(pid_t pid, int options, struct task_struct *p)
 	 * Do not consider thread group leaders that are
 	 * in a non-empty thread group:
 	 */
-	if (current->tgid != p->tgid && delay_group_leader(p))
+	if (delay_group_leader(p))
 		return 2;
 
 	if (security_task_wait(p))