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SubjectRe: patch for 2.1.90 net/core/iovec et al
> So it seems to me that the best approach is to just not attempt to reset the
> sequence at all, but instead to regard the case of EFAULT during copy as an
> error that ate all the bytes. (Such errors will be extremely rare in any event.)

2.0.x preserves the read position when you get an EFAULT. Nothing I can find
in the holy manual of posix says what happens if you get an EFAULT on a tcp
operation, so I think we can do what we like.


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