Greg> No, as Ben said, do not do this. Use write. And as you are
Greg> only doing 1 type of ioctl, it shouldn't be an issue. Also
Greg> it will be faster than the ioctl due to lack of BKL usage :)
This is no longer true. ioctls don't have to take the BKL now that
struct file_operations has unlocked_ioctl and compat_ioctl.
- R.
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