if (_sg_mc_ksm)
// We use mmap to allocate the memory in order to madvise it.
// We don't want to madvise the main heap.
// Moreover we get aligned pgaes which is merge-friendly.
if (_sg_mc_ksm)
// We use mmap to allocate the memory in order to madvise it.
// We don't want to madvise the main heap.
// Moreover we get aligned pgaes which is merge-friendly.