Re: [MC] [CHECKER] Need help on mmap on FUSE (linux user-land file system)

[Miklos Szeredi]

> > Forget to mention, we are checking linux 2.6.  It appears to us
> > that mmap doesnt' work for FUSE in linux 2.6.
> 
> IIRC, the reason mmap doesn't work on FUSE is because when it
> dirties pages they cannot be flushed reliably, because writing them
> out involves calling a userspace process which may allocate RAM,
> etc.

Yes.  To be precise this only affects writable shared mmap(), which is
not used by the great majority of applications.  Any other kind of
memory mapping should work OK.

Thanks,
Miklos
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