net/smc/af_smc.c:3186:45: error: no member named 'optlen_user' in 'struct sockopt'
net/smc/af_smc.c:3201:34: error: no member named 'optlen_user' in 'struct sockopt'
net/smc/af_smc.c:3207:33: error: no member named 'optlen_user' in 'struct sockopt'