RFC: use iomap infrastructure for all our zeroing needs

[Dave Chinner]

On Tue, Apr 12, 2016 at 03:26:47PM -0700, Christoph Hellwig wrote:
> This series uses the new iomap infrastructure to simplify all kinds
> of zeroing operations.  The RFC tag is mostly because the DAX path
> modified in this series hasn't been tested yet, the normal buffered
> path has been tested and works fine.

Yep, passes all my testing for normal FS paths, though I haven't run
DAX on it yet, either. I'll look to include this at teh same time as
the map iomap write/fiemap series.

Cheers,

Dave.
-- 
Dave Chinner
david at fromorbit.com