They are also far too busy reviewing and accepting code where the author wants it to be part of the kernel to go hunting around for code that may exist, may or may not have bugs, may or may not apply to the core kernel without problems, and may or may not even be legally released.
one of the side effects of the SCO fiasco is that they require that people attest that they have the right to contribute the code that they submit. Just saying 'someone slapped a GPL tag on it' isn't going to be good enough
The kernel developers have removed code that they had the legal right to include in the kernel because the author of the code wanted them to. They aren't about to go hunting for code who's author may oppose what they do with it.
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