Some of the modules in this patch are dual-licensed. I was under the
impression that EXPORT_SYMBOL_GPL was specifically for GPL-only code
although I could not find any specifics in the Documentation folder. Do
you (or someone else) have a reference on this topic?
If your code is licensed GPL or greater rights then you shouldn't have a
problem. The module loader recognizes
"GPL"
"GPL v2"
"GPL and additional rights"
"Dual BSD/GPL"
"Dual MIT/GPL"
"DUal MPL/GPL"
as legitimate users of _GPL. Any work which is derivative of the kernel
(which in practise I suspect means almost any module) will need a GPL
compatible licence anyway.