diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index a44b701c5bbadacd4726850e424f1e4185d1909e..66b99a2049e373cacca62d54d1d689daed2417e2 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -2681,7 +2681,7 @@ void __do_SAK(struct tty_struct *tty)
 	/* Kill the entire session */
 	do_each_pid_task(session, PIDTYPE_SID, p) {
 		printk(KERN_NOTICE "SAK: killed process %d"
-			" (%s): task_session_nr(p)==tty->session\n",
+			" (%s): task_session(p)==tty->session\n",
 			task_pid_nr(p), p->comm);
 		send_sig(SIGKILL, p, 1);
 	} while_each_pid_task(session, PIDTYPE_SID, p);
@@ -2691,7 +2691,7 @@ void __do_SAK(struct tty_struct *tty)
 	do_each_thread(g, p) {
 		if (p->signal->tty == tty) {
 			printk(KERN_NOTICE "SAK: killed process %d"
-			    " (%s): task_session_nr(p)==tty->session\n",
+			    " (%s): task_session(p)==tty->session\n",
 			    task_pid_nr(p), p->comm);
 			send_sig(SIGKILL, p, 1);
 			continue;
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 49df878a0cadef840e206205b2c7e8557347ff02..206ac003e8c0ba2b3f492e6e2dd4ec15d53b1b47 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -547,25 +547,8 @@ struct signal_struct {
 
 	struct list_head cpu_timers[3];
 
-	/* job control IDs */
-
-	/*
-	 * pgrp and session fields are deprecated.
-	 * use the task_session_Xnr and task_pgrp_Xnr routines below
-	 */
-
-	union {
-		pid_t pgrp __deprecated;
-		pid_t __pgrp;
-	};
-
 	struct pid *tty_old_pgrp;
 
-	union {
-		pid_t session __deprecated;
-		pid_t __session;
-	};
-
 	/* boolean value for session group leader */
 	int leader;
 
@@ -1469,16 +1452,6 @@ static inline int rt_task(struct task_struct *p)
 	return rt_prio(p->prio);
 }
 
-static inline void set_task_session(struct task_struct *tsk, pid_t session)
-{
-	tsk->signal->__session = session;
-}
-
-static inline void set_task_pgrp(struct task_struct *tsk, pid_t pgrp)
-{
-	tsk->signal->__pgrp = pgrp;
-}
-
 static inline struct pid *task_pid(struct task_struct *task)
 {
 	return task->pids[PIDTYPE_PID].pid;
@@ -1552,11 +1525,6 @@ static inline pid_t task_tgid_vnr(struct task_struct *tsk)
 }
 
 
-static inline pid_t task_pgrp_nr(struct task_struct *tsk)
-{
-	return tsk->signal->__pgrp;
-}
-
 static inline pid_t task_pgrp_nr_ns(struct task_struct *tsk,
 					struct pid_namespace *ns)
 {
@@ -1569,11 +1537,6 @@ static inline pid_t task_pgrp_vnr(struct task_struct *tsk)
 }
 
 
-static inline pid_t task_session_nr(struct task_struct *tsk)
-{
-	return tsk->signal->__session;
-}
-
 static inline pid_t task_session_nr_ns(struct task_struct *tsk,
 					struct pid_namespace *ns)
 {
@@ -1585,6 +1548,12 @@ static inline pid_t task_session_vnr(struct task_struct *tsk)
 	return __task_pid_nr_ns(tsk, PIDTYPE_SID, NULL);
 }
 
+/* obsolete, do not use */
+static inline pid_t task_pgrp_nr(struct task_struct *tsk)
+{
+	return task_pgrp_nr_ns(tsk, &init_pid_ns);
+}
+
 /**
  * pid_alive - check that a task structure is not stale
  * @p: Task structure to be checked.
diff --git a/kernel/exit.c b/kernel/exit.c
index 384f09caf2ef4ecbcd3cdfdc5ebadd44f6c7f4f6..3bec141c82f690b0ecb0cf1678c7a964e04c8521 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -357,16 +357,12 @@ static void reparent_to_kthreadd(void)
 void __set_special_pids(struct pid *pid)
 {
 	struct task_struct *curr = current->group_leader;
-	pid_t nr = pid_nr(pid);
 
-	if (task_session(curr) != pid) {
+	if (task_session(curr) != pid)
 		change_pid(curr, PIDTYPE_SID, pid);
-		set_task_session(curr, nr);
-	}
-	if (task_pgrp(curr) != pid) {
+
+	if (task_pgrp(curr) != pid)
 		change_pid(curr, PIDTYPE_PGID, pid);
-		set_task_pgrp(curr, nr);
-	}
 }
 
 static void set_special_pids(struct pid *pid)
diff --git a/kernel/fork.c b/kernel/fork.c
index adbea16ec6493937058769702a2f2354665267f6..f74458231449fb2d63caa8093f4a9b7ae664016a 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1265,8 +1265,6 @@ static struct task_struct *copy_process(unsigned long clone_flags,
 			p->signal->leader_pid = pid;
 			tty_kref_put(p->signal->tty);
 			p->signal->tty = tty_kref_get(current->signal->tty);
-			set_task_pgrp(p, task_pgrp_nr(current));
-			set_task_session(p, task_session_nr(current));
 			attach_pid(p, PIDTYPE_PGID, task_pgrp(current));
 			attach_pid(p, PIDTYPE_SID, task_session(current));
 			list_add_tail_rcu(&p->tasks, &init_task.tasks);
diff --git a/kernel/sys.c b/kernel/sys.c
index 37f458e6882adbd1f2b0697e5077c92e4252e03f..742cefa527e67e1f4b42d55abcb76bbbebadbbfe 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1013,10 +1013,8 @@ SYSCALL_DEFINE2(setpgid, pid_t, pid, pid_t, pgid)
 	if (err)
 		goto out;
 
-	if (task_pgrp(p) != pgrp) {
+	if (task_pgrp(p) != pgrp)
 		change_pid(p, PIDTYPE_PGID, pgrp);
-		set_task_pgrp(p, pid_nr(pgrp));
-	}
 
 	err = 0;
 out: