Our file system checker can potentially check a lot more things if we can
have mmap working on a FUSE file system. Your help on this are well
appreciated!
-Junfeng
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-Junfeng
On Sat, 12 Mar 2005, Junfeng Yang wrote:
>
> Does anyone know how to set up mmap on FUSE (linux user-land file system)?
> Or is it even possible to have mmap on FUSE?
>
> Our file system checker can potentially check a lot more things if we can
> have mmap working on a FUSE file system. Your help on this are well
> appreciated!
>
> -Junfeng
>
>
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> M...@keeda.stanford.edu
> http://keeda.stanford.edu/cgi-bin/mailman/listinfo/mc
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.
Cheers,
Kyle Moffett
-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
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!y?(-)
------END GEEK CODE BLOCK------
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