[GIT PULL] Final block fixes for 3.16

[Jens Axboe <axboe@fb.com>]

Hi Linus,

Four small fixes that should go into 3.16, have been queued up for a bit
and delayed due to vacation and other euro duties. But here they are.
The pull request contains:

- Fix for a reported crash with shared tagging on SCSI from Christoph.

- A regression fix for drbd. From Lars Ellenberg.

- Hooking up the compat ioctl for BLKZEROOUT, which requires no
  translation. From Mikulas.

- A fix for a regression where we woud crash on queue exit if the
  root_blkg is gone/not there. From Tejun.


Please pull for 3.16!


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


----------------------------------------------------------------
Christoph Hellwig (1):
      block: don't assume last put of shared tags is for the host

Lars Ellenberg (1):
      drbd: fix regression 'out of mem, failed to invoke fence-peer helper'

Mikulas Patocka (1):
      block: provide compat ioctl for BLKZEROOUT

Tejun Heo (1):
      blkcg: don't call into policy draining if root_blkg is already gone

 block/blk-cgroup.c           |  7 +++++++
 block/blk-tag.c              | 33 +++++++--------------------------
 block/compat_ioctl.c         |  1 +
 drivers/block/drbd/drbd_nl.c |  6 ++++++
 4 files changed, 21 insertions(+), 26 deletions(-)

-- 
Jens Axboe