[dm-devel] devirtualize kernel access to DAX v2

[Christoph Hellwig]

Hi Dan,

this series cleans up a few loose end ends and then removes the
copy_from_iter and copy_to_iter dax_operations methods in favor of
straight calls.

Changes since v1:
 - reword a 'no check' comment
 - clean up the flags for the copy routine variants
 - drop the last patch

Diffstat:
 drivers/dax/bus.c             |    5 ++
 drivers/dax/super.c           |   50 +++++++++++++++++++-------
 drivers/md/dm-linear.c        |   20 ----------
 drivers/md/dm-log-writes.c    |   80 ------------------------------------------
 drivers/md/dm-stripe.c        |   20 ----------
 drivers/md/dm.c               |   54 +---------------------------
 drivers/nvdimm/pmem.c         |   29 ++-------------
 drivers/s390/block/dcssblk.c  |   18 +--------
 fs/dax.c                      |    5 --
 fs/fuse/virtio_fs.c           |   19 ---------
 include/linux/dax.h           |   29 +++------------
 include/linux/device-mapper.h |    4 --
 include/linux/uio.h           |   20 ----------
 13 files changed, 60 insertions(+), 293 deletions(-)