[PATCH] add process_session() helper routine

Replace occurences of task->signal->session by a new process_session() helper
routine.

It will be useful for pid namespaces to abstract the session pid number.

Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Cc: Kirill Korotaev <dev@openvz.org>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index 597707819327..298c4d6ab512 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1259,9 +1259,9 @@ static struct task_struct *copy_process(unsigned long clone_flags,
                 if (thread_group_leader(p)) {
                         p->signal->tty = current->signal->tty;
                         p->signal->pgrp = process_group(current);
-                        p->signal->session = current->signal->session;
+                        p->signal->session = process_session(current);
                         attach_pid(p, PIDTYPE_PGID, process_group(p));
-                        attach_pid(p, PIDTYPE_SID, p->signal->session);
+                        attach_pid(p, PIDTYPE_SID, process_session(p));
 
                         list_add_tail_rcu(&p->tasks, &init_task.tasks);
                         __get_cpu_var(process_counts)++;