iomap infrastructure and multipage writes V5

[Christoph Hellwig]

On Mon, Jul 18, 2016 at 09:14:00PM +1000, Dave Chinner wrote:
> Any progress here, Christoph?

Nothing after the last posting yet.  Shortly after that I left to Japan
for about two weeks of hiking and a conference, which doesn't help my
ability to spend some quiet hours with the code.   It's on top of
my priority list for non-trivial things and I should be able to get
back it tomorrow after finishing the next conference today..