linux-kernel - Re: [PATCH 00/10] iov_iter: Add new iters and use with AFS

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Message-ID: <28094.1536858346@warthog.procyon.org.uk>
Date:   Thu, 13 Sep 2018 18:05:46 +0100
From:   David Howells <dhowells@...hat.com>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     dhowells@...hat.com, viro@...iv.linux.org.uk,
        linux-fsdevel@...r.kernel.org, linux-afs@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/10] iov_iter: Add new iters and use with AFS

Matthew Wilcox <willy@...radead.org> wrote:

> It might serve to replace iov_iter_zero().

I don't think it can work like that.  iov_iter_zero() writes zeros into an
iterator someone else set up.

To use ITER_ZERO, you'd be setting up the iterator and passing it to someone
else to comsume.  I think these are at opposite ends of the concept.

David