On Wed, Feb 08, 2017 at 09:14:10AM -0800, Christoph Hellwig wrote: > On Wed, Jan 11, 2017 at 10:01:36AM +0100, Jan Kara wrote: > > On Tue 10-01-17 16:48:07, Christoph Hellwig wrote: > > > 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@xxxxxx> > > > > Makes sense. You can add: > > > > Reviewed-by: Jan Kara <jack@xxxxxxx> > > > > Ted, can you please pick it up? Thanks! > > Did this get picked up? Sorry, I missed Jan's request to pick it up. I had assumed it would be going in via the dax tree. I'll take a look at it now for the ext4 tree. - Ted