From 7d8da0962eaee30b4a380ded177349bfbdd6ac46 Mon Sep 17 00:00:00 2001
From: Oleg Nesterov <oleg@tv-sign.ru>
Date: Wed, 30 Apr 2008 00:54:27 -0700
Subject: [PATCH] pids: __set_special_pids: use change_pid() helper
Use change_pid() instead of detach_pid() + attach_pid() in
__set_special_pids().
This way task_session() is not NULL in between.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
kernel/exit.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/kernel/exit.c b/kernel/exit.c
index 0da2921b1e7f..d3ad54677f9c 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -334,13 +334,11 @@ void __set_special_pids(struct pid *pid)
pid_t nr = pid_nr(pid);
if (task_session(curr) != pid) {
- detach_pid(curr, PIDTYPE_SID);
- attach_pid(curr, PIDTYPE_SID, pid);
+ change_pid(curr, PIDTYPE_SID, pid);
set_task_session(curr, nr);
}
if (task_pgrp(curr) != pid) {
- detach_pid(curr, PIDTYPE_PGID);
- attach_pid(curr, PIDTYPE_PGID, pid);
+ change_pid(curr, PIDTYPE_PGID, pid);
set_task_pgrp(curr, nr);
}
}
--
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