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SubjectRe: [NFS] NFSD over TCP: TCP broken?

> where the interleaving gets in.

I do not think that you diagnosed the problem correctly.
nfsd used non blocking io and write to tcp is strictly atomic in this case.

> I'm not sure if TCP should be handling this
> or NFSD. From what little I know, TCP should serialize requests it gets and
> atomically write them out,

However, it does not and it should not. Like concurrent write()
to any other file, the result is unpredictably interleaved data.

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