locking/refcounts: Do not force refcount_t usage as GPL-only export
The refcount_t protection on x86 was not intended to use the stricter GPL export. This adjusts the linkage again to avoid a regression in the availability of the refcount API. Reported-by: NDave Airlie <airlied@gmail.com> Fixes: 7a46ec0e ("locking/refcounts, x86/asm: Implement fast refcount overflow protection") Cc: stable@vger.kernel.org Signed-off-by: NKees Cook <keescook@chromium.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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