[GIT PULL] Block fixes for 3.13-rc

[GIT PULL] Block fixes for 3.13-rc

[Jens Axboe]

Hi Linus,

A small collection of fixes for the current series. It contains:

- A fix for a use-after-free of a request in blk-mq. From Ming Lei.

- A fix for a blk-mq bug that could attempt to dereference a NULL rq if
  allocation failed.

- Two xen-blkfront small fixes.

- Cleanup of submit_bio_wait() type uses in the kernel, unifying that.
  From Kent.

- A fix for 32-bit blkg_rwstat reading. I apologize for this one looking
  mangled in the shortlog, it's entirely my fault for missing an empty
  line between the description and body of the text.

Please pull!

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

----------------------------------------------------------------
Felipe Pena (1):
      block: xen-blkfront: Fix possible NULL ptr dereference

Hong Zhiguo (1):
      Update of blkg_stat and blkg_rwstat may happen in bh context.     While u64_stats_fetch_retry is only preempt_disable on 32bit     UP system. This is not enough to avoid preemption by bh and     may read strange 64 bit value.

Jeff Moyer (1):
      blk-mq: fix dereference of rq->mq_ctx if allocation fails

Jens Axboe (1):
      Merge branch 'stable/for-jens-3.13-take-two' of git://git.kernel.org/.../xen/tip into for-linus

Kent Overstreet (1):
      block: submit_bio_wait() conversions

Ming Lei (1):
      blk-mq: fix use-after-free of request

Tim Gardner (1):
      xen-blkfront: Silence pfn maybe-uninitialized warning

 block/blk-cgroup.h           |  8 ++++----
 block/blk-flush.c            | 19 +------------------
 block/blk-mq.c               | 16 ++++++++++------
 drivers/block/xen-blkfront.c |  7 ++++++-
 drivers/md/md.c              | 12 +-----------
 fs/btrfs/check-integrity.c   | 32 +++++++++++++-------------------
 fs/btrfs/check-integrity.h   |  2 ++
 fs/btrfs/extent_io.c         | 12 +-----------
 fs/btrfs/scrub.c             | 33 ++++-----------------------------
 fs/hfsplus/wrapper.c         | 17 +----------------
 fs/logfs/dev_bdev.c          | 13 +------------
 11 files changed, 44 insertions(+), 127 deletions(-)

-- 
Jens Axboe