linux-ext4 - Re: [PATCH 18/29] fsdax: decouple zeroing from the iomap buffered I/O code

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Date:   Wed, 24 Nov 2021 07:52:28 +0100
From:   Christoph Hellwig <hch@....de>
To:     "Darrick J. Wong" <djwong@...nel.org>
Cc:     Christoph Hellwig <hch@....de>,
        Dan Williams <dan.j.williams@...el.com>,
        Mike Snitzer <snitzer@...hat.com>,
        Ira Weiny <ira.weiny@...el.com>, dm-devel@...hat.com,
        linux-xfs@...r.kernel.org, nvdimm@...ts.linux.dev,
        linux-s390@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-erofs@...ts.ozlabs.org, linux-ext4@...r.kernel.org,
        virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH 18/29] fsdax: decouple zeroing from the iomap buffered
 I/O code

On Tue, Nov 23, 2021 at 02:53:15PM -0800, Darrick J. Wong wrote:
> > -s64 dax_iomap_zero(loff_t pos, u64 length, struct iomap *iomap)
> > +static loff_t dax_zero_iter(struct iomap_iter *iter, bool *did_zero)
> 
> Shouldn't this return value remain s64 to match iomap_iter.processed?

I'll switch it over.  Given that loff_t is always the same as s64
it shouldn't really matter.

(same for the others)