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    SubjectRe: VFS
    > Hmm...so what are the alternatives? [We've come full circle.]

    This highly depends on your file system. If UDF works similar to
    9660, I see two options:
    a) use the block number of the first block of the file
    b) use a hash value of the file name

    On a RO file system, both are guaranteed to stay identical between
    invocations. In either case, you can't open the file when given
    the inode (can you?), but this is currently not a requirement in
    the Linux kernel. Ideally, you would choose something that identifies
    the file in a way so you can access it when given this identification,
    and also fits into 32 bits.

    Hope this helps,
    Martin

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