On Wed, Jan 11, 2017 at 10:01:36AM +0100, Jan Kara wrote:

On Tue 10-01-17 16:48:07, Christoph Hellwig wrote:

quoted

Unlike O_DIRECT DAX is not an optional opt-in feature selected by the
application, so we'll have to provide the traditional synchronіzation
of overlapping writes as we do for buffered writes.

This was broken historically for DAX, but got fixed for ext2 and XFS
as part of the iomap conversion.  Fix up ext4 as well.

Signed-off-by: Christoph Hellwig <hch@lst.de>

Makes sense. You can add:

Reviewed-by: Jan Kara <jack@suse.cz>

Ted, can you please pick it up? Thanks!

Did this get picked up?
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