From ad0ee393d7e8e2b9195c5449fa89e8b23a8dfddf Mon Sep 17 00:00:00 2001
From: Oleg Nesterov <oleg@redhat.com>
Date: Tue, 15 Dec 2009 16:47:15 -0800
Subject: [PATCH] --- yaml --- r: 176677 b: refs/heads/master c:
 c6a47cc2ccf9649ee09eeddd70a6d061bde69568 h: refs/heads/master i:   176675:
 21689844f9c5e1664952bc011d2e91aece7b60d5 v: v3

---
 [refs]                       |  2 +-
 trunk/include/linux/ptrace.h | 11 +++--------
 2 files changed, 4 insertions(+), 9 deletions(-)

diff --git a/[refs] b/[refs]
index 6e666e7d18f0..bcd9bea3227c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: aa20d489ceb024f91aae084ee00c47fc6a12255c
+refs/heads/master: c6a47cc2ccf9649ee09eeddd70a6d061bde69568
diff --git a/trunk/include/linux/ptrace.h b/trunk/include/linux/ptrace.h
index 7456d7d87a19..1951805df63a 100644
--- a/trunk/include/linux/ptrace.h
+++ b/trunk/include/linux/ptrace.h
@@ -105,12 +105,7 @@ static inline int ptrace_reparented(struct task_struct *child)
 {
 	return child->real_parent != child->parent;
 }
-static inline void ptrace_link(struct task_struct *child,
-			       struct task_struct *new_parent)
-{
-	if (unlikely(child->ptrace))
-		__ptrace_link(child, new_parent);
-}
+
 static inline void ptrace_unlink(struct task_struct *child)
 {
 	if (unlikely(child->ptrace))
@@ -169,9 +164,9 @@ static inline void ptrace_init_task(struct task_struct *child, bool ptrace)
 	INIT_LIST_HEAD(&child->ptraced);
 	child->parent = child->real_parent;
 	child->ptrace = 0;
-	if (unlikely(ptrace)) {
+	if (unlikely(ptrace) && (current->ptrace & PT_PTRACED)) {
 		child->ptrace = current->ptrace;
-		ptrace_link(child, current->parent);
+		__ptrace_link(child, current->parent);
 	}
 }