Hello, our cp(1) has code which uses mmap(2) and write(2) instead of read(2) and write(2) to copy files. The mmap(2) implementation is not used because "VM_AND_BUFFER_CACHE_SYNCHRONIZED" is not defined. My question is if VM and buffer cache are synchronized after the integration of UBC? Kind regards -- Matthias Scheler http://scheler.de/~matthias/