Re: [PATCH 7/7] xfs: re-enable XFS per-inode DAX

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To: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
Subject: Re: [PATCH 7/7] xfs: re-enable XFS per-inode DAX
From: Christoph Hellwig <hch@xxxxxx>
Date: Tue, 26 Sep 2017 08:36:11 +0200
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, "Darrick J. Wong" <darrick.wong@xxxxxxxxxx>, "J. Bruce Fields" <bfields@xxxxxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>, Dan Williams <dan.j.williams@xxxxxxxxx>, Dave Chinner <david@xxxxxxxxxxxxx>, Jan Kara <jack@xxxxxxx>, Jeff Layton <jlayton@xxxxxxxxxxxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-nvdimm@xxxxxxxxxxxx, linux-xfs@xxxxxxxxxxxxxxx
In-reply-to: <20170925231404.32723-8-ross.zwisler@linux.intel.com>
User-agent: Mutt/1.5.17 (2007-11-01)

On Mon, Sep 25, 2017 at 05:14:04PM -0600, Ross Zwisler wrote:
> Re-enable the XFS per-inode DAX flag, preventing S_DAX from changing when
> any mappings are present.

Before we re-enable it please come up with a coherent description
of the per-inode DAX flag that makes sense to a user.  We'll also need
to find a good place to document it, e.g. a new ioctl_setflags man
page.

Follow-Ups:
- Re: [PATCH 7/7] xfs: re-enable XFS per-inode DAX
  - From: Ross Zwisler

References:
- [PATCH 0/7] re-enable XFS per-inode DAX
  - From: Ross Zwisler
- [PATCH 7/7] xfs: re-enable XFS per-inode DAX
  - From: Ross Zwisler

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