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authorOleg Nesterov <oleg@tv-sign.ru>2008-04-30 00:54:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-30 08:29:49 -0700
commit7d8da0962eaee30b4a380ded177349bfbdd6ac46 (patch)
treecfbdb6d94922264e7e06892275f1e4d5a29017a6 /kernel/exit.c
parent83beaf3c6c75b36b7c9be7f555c8cf7797842cc5 (diff)
downloadlinux-7d8da0962eaee30b4a380ded177349bfbdd6ac46.tar.gz
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>
Diffstat (limited to 'kernel/exit.c')
-rw-r--r--kernel/exit.c6
1 files 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);
 	}
 }