[GIT PULL] (xen) stable/for-jens-4.5

[Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

Hey Jens,

Please pull in your "for-4.5/drivers" branch the following branch:

git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git stable/for-jens-4.5

which is based on "bcache: Change refill_dirty() to always scan entire disk if necessary"
(the tip of your branch as of today)

The pull is based on converting the backend driver into an multiqueue
driver and exposing more than one queue to the frontend. As such we had
to modify the frontend and also fix a bunch of bugs around this.

The original work is based on Arianna Avanzini's work as an OPW intern.
Bob took over the work and had been massaging it for quite some time.

Also included are are features to 64KB page support for ARM and various
bug-fixes.

Thank you!

P.S.
The branch is fresh in the git tree, but that is because I had rebased it
on your tree today (and tested it naturally). It had been simmering for
quite a while.

 drivers/block/xen-blkback/blkback.c |  391 +++++++------
 drivers/block/xen-blkback/common.h  |   86 +--
 drivers/block/xen-blkback/xenbus.c  |  416 +++++++++-----
 drivers/block/xen-blkfront.c        | 1061 +++++++++++++++++++++++------------
 include/xen/interface/io/blkif.h    |   48 ++
 5 files changed, 1292 insertions(+), 710 deletions(-)

Bob Liu (12):
      xen/blkif: document blkif multi-queue/ring extension
      xen/blkfront: separate per ring information out of device info
      xen/blkfront: pseudo support for multi hardware queues/rings
      xen/blkfront: split per device io_lock
      xen/blkfront: negotiate number of queues/rings to be used with backend
      xen/blkfront: Remove duplicate setting of ->xbdev.
      xen/blkfront: make persistent grants pool per-queue
      xen/blkback: separate ring information out of struct xen_blkif
      xen/blkback: get the number of hardware queues/rings from blkfront
      xen/blkback: make pool of persistent grants and free pages per-queue
      xen/blkback: make st_ statistics per ring
      xen/blkback: Fix two memory leaks.

Jiri Kosina (1):
      xen-blkback: clear PF_NOFREEZE for xen_blkif_schedule()

Julien Grall (2):
      xen-blkfront: Introduce blkif_ring_get_request
      xen/blkfront: Handle non-indirect grant with 64KB pages

Konrad Rzeszutek Wilk (5):
      xen/blkfront: Cleanup of comments, fix unaligned variables, and syntax errors.
      xen/blkback: pseudo support for multi hardware queues/rings
      xen/blocks: Return -EXX instead of -1
      xen/blkback: Free resources if connect_ring failed.
      xen/blkfront: Fix crash if backend doesn't follow the right states.

Peng Fan (1):
      xen/blkfront: correct setting for xen_blkif_max_ring_order