MCL_CURRENT
if (((how & MCL_CURRENT) == 0) && ((how & MCL_FUTURE) == 0))
if (how & MCL_CURRENT) {
mlockflags = MCL_CURRENT | MCL_FUTURE;
if (mlockall(MCL_CURRENT | MCL_FUTURE) == -1)
if (mlockall(MCL_CURRENT | MCL_FUTURE) == -1) {