[PATCH v2 3/3] posix: Implement preadv2 and pwritev2

[Christoph Hellwig]

On Tue, May 02, 2017 at 11:33:32AM -0300, Adhemerval Zanella wrote:
> So default implementation just ignore the flag argument and calls generic
> preadv/pwritev.

Please don't do that, it's actively dangerous.  Just fail the call.