[openib-general] Kernel locking rules documentation

[Sean Hefty]

>I've tried to write up the locking rules used by our kernel IB layer,
>so that they're made explicit for people implementing new low-level
>drivers and new protocols.  I'd appreciate corrections and all other
>comments.  Does this seem worth sending upstream for inclusion under
>Documentation/infiniband?

Looks good to me.  I think that it makes sense to include this in the
Documentation area.

The only problem that stood out to me was a minor typo where "all all" appears
in the paragraph under the Hot Plug section.

- Sean