Functions starting with `n' in kern

• namei kern/vfs_lookup.c:72
• nchinit kern/vfs_cache.c:243
• ndflush kern/tty_subr.c:209
• ndqb kern/tty_subr.c:181
• nextc kern/tty_subr.c:405
• nullioctl kern/tty_conf.c:101
• nullmodem kern/tty.c:751
• nullop kern/subr_xxx.c:102