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    SubjectRe: [RFC] atomic create+open
    fr den 07.10.2005 Klokka 15:59 (+0200) skreiv Miklos Szeredi:

    > You can replace the inode in ->create_open() if you want to.

    Thinking a bit more clearly after a cup of coffee. This statement isn't
    even true.

    Your pseudo-code offers no guarantees that you are the sole user of the
    dentry once you get to create_open().

    > Or let the VFS redo the lookup (as if d_revalidate() returned 0).

    Which may return yet another result for the dentry and another race.
    There is no guarantee that you will ever make progress if someone is
    doing something like.

    while true
    echo "1" > foo
    echo "2" > foo

    on the server.


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