Re: [PATCH 1/6] seq_file: add seq_read_iter

[Al Viro]

On Tue, Nov 10, 2020 at 09:32:53PM +0000, Al Viro wrote:

> AFAICS, not all callers want that semantics, but I think it's worth
> a new primitive.  I'm not saying it should be a prereq for your
> series, but either that or an explicit iov_iter_revert() is needed.

Seeing that it already went into mainline, it needs a followup fix.
And since it's not -stable fodder (AFAICS), I'd rather go with
adding a new primitive...