Messages in this thread | | | From | David Howells <> | Subject | Re: [PATCH 00/10] iov_iter: Add new iters and use with AFS | Date | Thu, 13 Sep 2018 17:18:23 +0100 |
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Matthew Wilcox <willy@infradead.org> wrote:
> > (5) Add an ITER_DISCARD iterator type. This provides an iterator that > > simply discards anything written to it. It cannot be used as a data > > source. > > May I suggest an ITER_ZERO iterator type instead? It acts like /dev/zero; > writes are discarded (as you have here) and reads return zeroes. > I've wanted such a thing in the past, but got distracted away from > that project.
I thought about that, but the zero-filling is not as easy to implement as the discard side - plus I don't have any use case to test it with.
Do you have a use case in mind?
David
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