История изменений
Исправление crowbar, (текущая версия) :
It is unspecified whether modifications to the underlying object done after the MAP_PRIVATE mapping is established are visible through the MAP_PRIVATE mapping.
Очевидно вот поэтому (man mmap)
http://hashcode.ru/questions/119844/linux-почему-lsb-elf-shared-object-можно-...
Исходная версия crowbar, :
It is unspecified whether modifications to the underlying object done after the MAP_PRIVATE mapping is established are visible through the MAP_PRIVATE mapping.
Очевидно вот поэтому (man mmap)