(xen) stable/for-jens-4.5

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

ping ?

Thanks.

Pulled, sorry for the delay, I had some vacation post New Years that I still haven't caught fully up on.

Jens Axboe