MCL_CURRENT
if (mlockall(MCL_CURRENT | MCL_FUTURE)) {
if (mlockall(MCL_CURRENT | MCL_FUTURE)) {
if ((flags & MCL_CURRENT) == 0) {
if (flags == 0 || (flags & ~(MCL_CURRENT|MCL_FUTURE)) != 0)
if (mlockall(MCL_CURRENT|MCL_FUTURE) != 0 && errno != ENOMEM)