Block fixes for 4.7-rc3

Hi Linus,

A small collection of fixes for the current series. This pull request contains:

- Two fixes for xen-blkfront, from Bob Liu.

- A bug fix for NVMe, releasing only the specific resources we requested.

- Fix for a debugfs flags entry for nbd, from Josef.

- Plug fix from Omar, fixing up a case of code being switched between two functions.

- A missing bio_put() for the new discard callers of submit_bio_wait(), fixing a regression causing a leak of the bio. From Shaun.

- Improve dirty limit calculation precision in the writeback code, fixing a case where setting a limit lower than 1% of memory would end up being zero. From Tejun.

Please pull!

git://git.kernel.dk/linux-block.git for-linus

----------------------------------------------------------------
Bob Liu (2):
xen-blkfront: don't call talk_to_blkback when already connected to blkback
xen-blkfront: fix resume issues after a migration

Jens Axboe (1):
Merge branch 'stable/for-jens-4.7' of git://git.kernel.org/.../konrad/xen into for-linus

Johannes Thumshirn (1):
NVMe: Only release requested regions

Josef Bacik (1):
nbd: pass the nbd pointer for flags debugfs

Omar Sandoval (1):
blk-mq: really fix plug list flushing for nomerge queues

Shaun Tancheff (1):
block: missing bio_put following submit_bio_wait

Tejun Heo (1):
writeback: use higher precision calculation in domain_dirty_limits()

 block/blk-lib.c              | 12 +++++++++---
 block/blk-mq.c               | 17 ++++++++---------
 drivers/block/nbd.c          |  2 +-
 drivers/block/xen-blkfront.c | 35 ++++++++++++++++++++++-------------
 drivers/nvme/host/pci.c      |  9 +++++++--
 mm/page-writeback.c          | 21 ++++++++++++---------
 6 files changed, 59 insertions(+), 37 deletions(-)

Jens Axboe