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    SubjectRe: Q: NFSD readdir in linux-2.6.28

    David Woodhouse:
    > Yes, well spotted. It didn't matter when the buffered readdir() was
    > purely internal to XFS, because it didn't matter there that we called
    > ->lookup() without i_mutex set. But now we're exposing arbitrary file
    > systems to it, we need to make sure we follow the locking rules.
    > I _think_ it's sufficient to make the affected callers of
    > lookup_one_len() lock the parent's i_mutex for themselves before calling
    > it. I'll take a closer look...

    If you remember why you discarded the FS_NO_LOOKUP_IN_READDIR flag
    approach, please let me know. URL or something is enough.

    J. R. Okajima

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