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[ Upstream commitbfcf4004bc] I want to be sure that ipv6-specific code is not compiled in kernel binaries if ipv6 is not configured. [1] was getting rid of "unused variable" warning, but, with that, it also mandated compilation of a handful ipv6- specific functions in ipv4-only kernel configurations: smk_ipv6_localhost, smack_ipv6host_label, smk_ipv6_check. Their compiled bodies are likely to be removed by compiler from the resulting binary, but, to be on the safe side, I remove them from the compiler view. [1] Fixes:00720f0e7f("smack: avoid unused 'sip' variable warning") Signed-off-by: Konstantin Andreev <andreev@swemel.ru> Signed-off-by: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: Sasha Levin <sashal@kernel.org>