bcache fixes for 3.13

Jens - small pile of bcache fixes. I've been slacking on the writeback fixes but those definitely need to get into 3.13:

The following changes since commit c86949486d41d9e7d7681fc72923555114fd702f:

bcache: defensively handle format strings (2013-11-10 21:56:43 -0800)

are available in the git repository at:

git://evilpiepirate.org/~kent/linux-bcache.git bcache-for-3.13

for you to fetch changes up to 16749c23c00c686ed168471963e3ddb0f3fcd855:

bcache: New writeback PD controller (2013-12-16 14:22:59 -0800)

----------------------------------------------------------------
Kent Overstreet (4):
bcache: Use uninterruptible sleep in writeback
bcache: Fix dirty_data accounting
bcache: bugfix for race between moving_gc and bucket_invalidate
bcache: New writeback PD controller

Nicholas Swenson (5):
bcache: Fix for can_attach_cache()
bcache: Fix heap_peek() macro
bcache: fix for gc crashing when no sectors are used
bcache: bugfix - moving_gc now moves only correct buckets
bcache: fix for gc and writeback race

Stefan Priebe (1):
bcache: kthread don't set writeback task to INTERUPTIBLE

Wei Yongjun (1):
bcache: fix sparse non static symbol warning

 drivers/md/bcache/alloc.c     |  2 ++
 drivers/md/bcache/bcache.h    | 12 +++++-----
 drivers/md/bcache/btree.c     | 27 ++++++++++++++++++++--
 drivers/md/bcache/movinggc.c  | 21 ++++++++++++-----
 drivers/md/bcache/super.c     |  2 +-
 drivers/md/bcache/sysfs.c     | 50 +++++++++++++++++++++++-----------------
 drivers/md/bcache/util.c      |  8 ++++++-
 drivers/md/bcache/util.h      |  2 +-
 drivers/md/bcache/writeback.c | 53 ++++++++++++++++++++-----------------------
 9 files changed, 111 insertions(+), 66 deletions(-)

Thanks Kent, pulled.

Jens Axboe