[erlang-questions] mmap file to binary

[Max Lapshin]

I've thought a lot about mmap usage in erlang and haven't found any
good solution.
Main idea is that when file is mmaped to address space, it is possible
to take chunks from it without any copying:

{ok, Bin} = file:mmap(File),
<<_:LargeOffset/binary, InsideBinary:Size/binary, _/binary>> = Bin,

But what to do, when file is closed and all binaries, that referred
into this address space becomes unusable?