From: Neil Horman <nhor...@tuxdriver.com>
Date: Wed, 15 Jul 2015 09:18:28 -0400

> Do we need to do something here to prevent user space calls from inadvertently
> accessing this option?

And this is also not what I had anticipated was the implementation.

I didn't mean that adding a new option number specially for the
kernel was the right thing to do.

I meant that having a specific function GPL exported to modules that
the external code calls would do the trick.

That's why we have things like kernel_sendmsg() et al.
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