Messages in this thread | | | Date | Wed, 15 Sep 2004 12:30:51 -0400 | From | Alan Cox <> | Subject | Re: PATCH: tty locking for 2.6.9rc2 |
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On Wed, Sep 15, 2004 at 11:26:35AM -0500, Paul Fulghum wrote: > I tried this patch and can't change line disciplines. > The user program waits forever on ioctl(TIOCSETD). > I am going to add printk statements to
Is the tty currently in use - that implies maybe an ldisc leak
> Each line discipline has a refcount. > This single refcount is modified by all > entities using that line discipline.
Nope. tty->ldisc is a -copy- of the ldisc structure rather than a pointer. It has always been that way
struct tty_struct { int magic; struct tty_driver *driver; int index; struct tty_ldisc ldisc;
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