linux-kernel - Re: [PATCH 1/2] dm log writes: Add support for inline data buffers

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Date:   Tue, 24 Oct 2017 15:14:32 -0400
From:   Mike Snitzer <snitzer@...hat.com>
To:     Ross Zwisler <ross.zwisler@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org, Josef Bacik <jbacik@...com>,
        Alasdair Kergon <agk@...hat.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Dave Chinner <david@...morbit.com>, Jan Kara <jack@...e.cz>,
        Shaohua Li <shli@...nel.org>, dm-devel@...hat.com,
        linux-nvdimm@...ts.01.org, linux-raid@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
        linux-xfs@...r.kernel.org, Christoph Hellwig <hch@...radead.org>
Subject: Re: [PATCH 1/2] dm log writes: Add support for inline data buffers

On Fri, Oct 20 2017 at  1:24am -0400,
Ross Zwisler <ross.zwisler@...ux.intel.com> wrote:

> Currently dm-log-writes supports writing filesystem data via BIOs, and
> writing internal metadata from a flat buffer via write_metadata().
> 
> For DAX writes, though, we won't have a BIO, but will instead have an
> iterator that we'll want to use to fill a flat data buffer.
> 
> So, create write_inline_data() which allows us to write filesystem data
> using a flat buffer as a source, and wire it up in log_one_block().
> 
> Signed-off-by: Ross Zwisler <ross.zwisler@...ux.intel.com>

Hi,

I picked this up but tweaked some whitespace and couple style nits, see:
https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git/commit/?h=for-4.15/dm&id=6a697d036324c7fbe63fb49599027269006161e7

Thanks,
Mike