[GIT PULL] Bcache fixes for 3.10

[Kent Overstreet <koverstreet-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>]

Hey Jens, this is everything I've got ready for 3.10 - there's _still_
one more bug I'm trying to track down.

Andrew - I've got patches that rip out the pkey() and pbtree() macros,
but they're somewhat tied up with some other nontrivial refactorings so
I think I'm going to wait a bit on those.

The following changes since commit cef5279735d3f6f0243e626963e6d5c84efade0a:

  bcache: Disable broken btree fuzz tester (2013-04-08 13:33:49 -0700)

are available in the git repository at:

  http://evilpiepirate.org/git/linux-bcache.git bcache-for-upstream

for you to fetch changes up to cd66f1f69ed40270bb34e20b25a8111bc72a1b2a:

  bcache: Use bd_link_disk_holder() (2013-04-24 13:15:17 -0700)

----------------------------------------------------------------
Kent Overstreet (8):
      bcache: Take data offset from the bdev superblock.
      bcache: Set ra_pages based on backing device's ra_pages
      bcache: Hack around stuff that clones up to bi_max_vecs
      bcache: Correctly check against BIO_MAX_PAGES
      bcache: Fix merge_bvec_fn usage for when it modifies the bvm
      bcache: Make sure blocksize isn't smaller than device blocksize
      bcache: Allocator cleanup/fixes
      bcache: Use bd_link_disk_holder()

 drivers/md/bcache/alloc.c   |  74 +++++++++++++-------
 drivers/md/bcache/bcache.h  |  48 ++++++++++---
 drivers/md/bcache/btree.c   |   8 +--
 drivers/md/bcache/io.c      |  35 ++++++----
 drivers/md/bcache/request.c |   2 +-
 drivers/md/bcache/super.c   | 166 +++++++++++++++++++++++++++-----------------
 6 files changed, 215 insertions(+), 118 deletions(-)