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Yinghai Lu committed f0b37fad9a6
memblock: Protect memblock.h with CONFIG_HAVE_MEMBLOCK This should make it easier to catch/debug incorrect use when the CONFIG_ option isn't set. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>