1. MAP_POPULATE is missing for mmap in Allocator, because macro OS_LINUX is not defined in allocator.h; 2. MAP_POPULATE has no effect for mremap as for mmap, zero-fill enlarged memory range explicitly to pre-fault the pages
1. MAP_POPULATE is missing for mmap in Allocator, because macro OS_LINUX is not defined in allocator.h; 2. MAP_POPULATE has no effect for mremap as for mmap, zero-fill enlarged memory range explicitly to pre-fault the pages