From: Rusty Russell <rusty@rustcorp.com.au>
To: Linus Torvalds <torvalds@linux-foundation.org>
Subject: [PATCH 0/6] RFC: Typesafe callbacks
Date: Sun, 20 Jan 2008 20:46:13 +1100
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Cc: Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org,
       Jeff Garzik <jeff@garzik.org>, Tejun Heo <htejun@gmail.com>
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Hi all,

   Converting to and from void * for callback functions loses type safety: 
everywhere else we expect the compiler to catch incorrect pointer types 
handed to functions.

   It's pretty simple to create typesafe callback functions using typeof, and 
with a little gcc trickery we can allow both old-style and typesafe callbacks 
to avoid churn on commonly-used routines.

Feedback welcomed,
Rusty.
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