[linux-audio-dev] memory-mapped wav files

A thought occured to me recently... If I am writing an application which needs to stream a large wav file, I am having to write something which reserves some memory, and loads pieces of the wav file from disk on request. Say I need to be able to jump around the file a bit, I would have to detect when the piece is not available and load it in as appropriate. ... which I realized is exactly what the OS VM paging system does. So, has anyone tried using memory-mapped files for streaming audio data? (obviously, I mean, in a non-realtime thread, using a buffer). Or would this be totally inefficient? I was thinking it could really simplify programming, just directly accessing parts of the wav file as needed, and letting the OS load it up into physical memory when it wants to. Just curious. Steve