[PATCH] sem2mutex: tty

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

kernel/exit.c

@@ -345,9 +345,9 @@ void daemonize(const char *name, ...)
 	exit_mm(current);
 
 	set_special_pids(1, 1);
-	down(&tty_sem);
+	mutex_lock(&tty_mutex);
 	current->signal->tty = NULL;
-	up(&tty_sem);
+	mutex_unlock(&tty_mutex);
 
 	/* Block and flush all signals */
 	sigfillset(&blocked);

kernel/sys.c

@@ -1227,7 +1227,7 @@ asmlinkage long sys_setsid(void)
 	struct pid *pid;
 	int err = -EPERM;
 
-	down(&tty_sem);
+	mutex_lock(&tty_mutex);
 	write_lock_irq(&tasklist_lock);
 
 	pid = find_pid(PIDTYPE_PGID, group_leader->pid);
@@ -1241,7 +1241,7 @@ asmlinkage long sys_setsid(void)
 	err = process_group(group_leader);
 out:
 	write_unlock_irq(&tasklist_lock);
-	up(&tty_sem);
+	mutex_unlock(&tty_mutex);
 	return err;
 }