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From: Phil Carmody on 3 Jun 2010 08:20

The first two patches are simply preparation for the third, making it
effectively trivial, even though it's the only one with a concrete
change in behaviour.

The origins of this patchset are the discovery that unwind and kmemleak
don't always cooperate well with each other - any allocation within
an exit or devexit function causes kmemleak to look up symbols that
aren't in any unwind table. This of course means that all WARN_ONs and
BUGs will suffer the same fate.

It could certainly be said that with a typical system the linked list
has grown too large to be practical as a container, and some improvements
could be made in that direction in the future.

Cheers,
Phil
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