In message: <[EMAIL PROTECTED]>
            Nate Lawson <[EMAIL PROTECTED]> writes:
: I am using dev->si_drv1 to store my softc (as are other drivers).  What
: guarantees do I have about multiple opens/closes not stepping on each
: other's toes?  How does -stable compare to -current in this regard?

You don't have any guarantees.  si_drv1 is for each dev_t.  Multiple
opens of the same minor device share the same dev_t.  Stable and
current are exactly the same in this reguard.

You cannot easily have the semantics that you want :-(


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