On Oct 8, 2006, at 1:10 AM, Juergen Hannken-Illjes wrote:

> - Specificdata_setspecific() and the functions using it should also  
> work
>   (and possibly fail) if called from a non-sleepable context.   
> Either a
>   flag (WAIT/NOWAIT) or a special function xxx_nowait().

Do you need INTERRUPT context?  If so, it's non-trivial to support  
that, and it points to a need to restructure the calling code.

Or is it simply a matter of not wanting to block while holding other  
locks?

-- thorpej