understanding devpts_pty_new/kill

I'm trying to understand how the path those functions take to be called.

ptys. So we register tty_open for tty's which includes ptmx.

therefore when we open ptmx, tty_open gets called, we do the code for PTMX, which calls devpts_pty_new() which creates the appropriate enteries in /dev/pts. These f_ops are registered in chrdevs struct (from fs/devices.c)

I'm a little more hazy on devpts_pty_kill. That seems to similiar (except it's in pty_close, in pty.c) which is part of a much larger "tty driver" structure and is the "close" member of that structure. This structure is then registered. Then basically, it's also registered w/ tty_fops, but tty_release calls tty->driver.close.

Is this a correct understanding, or is there more going on behind the scenes?

thanks,

shaya potter