[PATCH 0/6 V2] xfs: upfront block zeroing for DAX

[Dave Chinner <david@xxxxxxxxxxxxx>]

Hi folks,

This is an updated patch set that was first posted here:

http://oss.sgi.com/archives/xfs/2015-10/msg00006.html

I've dropped the DAX locking revert patch from it; that's on it's
way to Linus via other channels and is essentially independent to
this set of XFS changes.

The only real change in the XFS code between the two versions is the
addition of XFS_TRANS_RESERVE in the DAX path in
xfs_iomap_write_direct() to allow it to dip into the reserve block
pool for unwritten extent conversion rather than reporting ENOSPC.

Patches are against 4.3-rc5 + XFS for-next branch.

-Dave.