[GIT PULL] Block fixes for 4.3-rc2

[Jens Axboe <axboe@fb.com>]

Hi Linus,

This is a bit bigger than it should be, but I could (did) not want to
send it off last week due to both wanting extra testing, and expecting a
fix for the bounce regression as well. In any case, this pull request
contains:

- Fix for the blk-merge.c compilation warning on gcc 5.x from me.

- A set of back/front SG gap merge fixes, from me and from Sagi. This
  ensures that we honor SG gapping for integrity payloads as well.

- Two small fixes for null_blk from Matias, fixing a leak and a capacity
  propagation issue.

- A blkcg fix from Tejun, fixing a NULL dereference.

- A fast clone optimization from Ming, fixing a performance regression
  since the arbitrarily sized bio's were introduced.

- Also from Ming, a regression fix for bouncing IOs.


Please pull!


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


----------------------------------------------------------------
Jens Axboe (2):
      block: fix bogus compiler warnings in blk-merge.c
      block: Check for gaps on front and back merges

Matias Bjørling (2):
      null_blk: fix memory leak on cleanup
      null_blk: fix wrong capacity when bs is not 512 bytes

Ming Lei (2):
      block: blk-merge: fast-clone bio when splitting rw bios
      block: fix bounce_end_io

Sagi Grimberg (3):
      block: Refuse request/bio merges with gaps in the integrity payload
      block: Refuse adding appending a gapped integrity page to a bio
      block: Copy a user iovec if it includes gaps

Tejun Heo (1):
      block: blkg_destroy_all() should clear q->root_blkg and ->root_rl.blkg

 block/bio-integrity.c    |  5 ++++
 block/blk-cgroup.c       |  3 +++
 block/blk-integrity.c    |  3 +++
 block/blk-map.c          | 26 +++++++++++++++++++--
 block/blk-merge.c        | 59 +++++++++++++++++++-----------------------------
 block/bounce.c           |  4 +++-
 drivers/block/null_blk.c | 36 ++++++++++++++---------------
 include/linux/blkdev.h   | 50 ++++++++++++++++++++++++++++++++++++++++
 8 files changed, 129 insertions(+), 57 deletions(-)

-- 
Jens Axboe