Re: [PATCH v6 12/15] xfs: require mmap lock for xfs_break_layouts()

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To: Christoph Hellwig <hch@xxxxxx>
Subject: Re: [PATCH v6 12/15] xfs: require mmap lock for xfs_break_layouts()
From: Dan Williams <dan.j.williams@xxxxxxxxx>
Date: Mon, 19 Mar 2018 13:10:52 -0700
Cc: "Darrick J. Wong" <darrick.wong@xxxxxxxxxx>, linux-nvdimm <linux-nvdimm@xxxxxxxxxxxx>, Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>, Dave Chinner <david@xxxxxxxxxxxxx>, linux-xfs <linux-xfs@xxxxxxxxxxxxxxx>, linux-fsdevel <linux-fsdevel@xxxxxxxxxxxxxxx>, Jan Kara <jack@xxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>
In-reply-to: <20180319194513.GA3160@lst.de>

On Mon, Mar 19, 2018 at 12:45 PM, Christoph Hellwig <hch@xxxxxx> wrote:
> On Mon, Mar 19, 2018 at 10:57:55AM -0700, Dan Williams wrote:
>> I don't see anything to adapt with respect to mmap locks since reflink
>> and dax are mutually exclusive.
>
> For now.  I'll change that pretty soon.

Right, so which patch set will be staged first? This one or the one
that causes us to consider reflink vs dax locking?

Follow-Ups:
- Re: [PATCH v6 12/15] xfs: require mmap lock for xfs_break_layouts()
  - From: Christoph Hellwig

References:
- [PATCH v6 00/15] dax: fix dma vs truncate/hole-punch
  - From: Dan Williams
- [PATCH v6 12/15] xfs: require mmap lock for xfs_break_layouts()
  - From: Dan Williams
- Re: [PATCH v6 12/15] xfs: require mmap lock for xfs_break_layouts()
  - From: Darrick J. Wong
- Re: [PATCH v6 12/15] xfs: require mmap lock for xfs_break_layouts()
  - From: Dan Williams
- Re: [PATCH v6 12/15] xfs: require mmap lock for xfs_break_layouts()
  - From: Christoph Hellwig

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