linux-kernel - Re: xfstests failures with xfs, dax and v4.4-rc3

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Message-ID: <20151202202910.GH19199@dastard>
Date:	Thu, 3 Dec 2015 07:29:10 +1100
From:	Dave Chinner <david@...morbit.com>
To:	Ross Zwisler <ross.zwisler@...ux.intel.com>, xfs@....sgi.com,
	Brian Foster <bfoster@...hat.com>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jeff Moyer <jmoyer@...hat.com>
Subject: Re: xfstests failures with xfs, dax and v4.4-rc3

On Wed, Dec 02, 2015 at 11:34:38AM -0700, Ross Zwisler wrote:
> I'm hitting a few more test failures in my testing setup with v4.4-rc3, xfs
> and DAX.  My test setup is a pair of 4GiB PMEM partitions in a KVM virtual
> machine.  Here are the failures:

Which are caused by commit 1ca1915 ("xfs: Don't use unwritten extents
for DAX") because of this code for unwritten extent conversion in
get_blocks:

	tp->t_flags |= XFS_TRANS_RESERVE;

It's a minor problem compared to all the other issues DAX has right
now, so I ignored it to get the bigger problem solved first.

Cheers,

Dave.
-- 
Dave Chinner
david@...morbit.com
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