In message <3FCF7AD5.4050501@lougher.demon.co.uk>, Phillip Lougher writes:
> Jörn Engel wrote:
> > 
> > So - as sick as it sounds - jffs2 may actually be the fs of choice
> > when doing encryption, even though working on a hard drive and not
> > flash.  Cool. :)
> > 
> 
> Considering that Jffs2 is the only writeable compressed filesystem, yes. 
[...]

Part of our stackable f/s project (FiST) includes a Gzipfs stackable
compression f/s.  There was a paper on it in Usenix 2001 and there's code in
the latest fistgen package.  See
http://www1.cs.columbia.edu/~ezk/research/fist/

Performance of Gzipfs is another matter, esp. for writes in the middle of
files. :-)

Cheers,
Erez.