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    SubjectRe: nfs accesses of FAT fs folders causes deadlock on lock_super
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    Fredrick Prashanth John Berchmans <fredrickprashanth@gmail.com> writes:

    > On Tue, May 4, 2010 at 3:32 AM, Christoph Hellwig <hch@infradead.org> wrote:
    >> On Mon, May 03, 2010 at 10:59:42PM -0700, Fredrick Prashanth John Berchmans wrote:
    >>> The box was running kernel version 2.6.27.10.
    >>> But I think the FAT code has not changed much.
    >>
    >> But the nfsd code has and now doesn't call lookup from the filldir
    >> callback anymore.
    >>
    >>
    >
    > I see from nfsd code, it seems the compose_entry_fh still calls
    > lookup_one_len, which is now
    > called from encode_entryplus_baggage instead of entry_encode.
    > Am I right?

    As far as I can see, nfsd is buffering the result of readdir, then do
    jobs (encode_fh, etc.) with it on other context of readdir.

    Aren't you missing a buffering of nfsd_buffered_readdir()?

    Thanks.
    --
    OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>


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