[PULL REQUEST - resend] md fixes for 2.6.32

[PULL REQUEST - resend] md fixes for 2.6.32

[Neil Brown]

Hi Linus,
 please pull some md fixes for 2.6.32 as described below. 

 The main issues related to:
  - The recently merged hardware offload for RAID6 calculations, which
    didn't handle the DDF style properly, and
  - The less recently added reshaping code that allows a RAID5 to be
    reshaped to have fewer devices.  Restarting such an array if it
    was shutdown during the reshape did not work.

 Also we remove a build-time dependency on perl.

Thanks,
NeilBrown



The following changes since commit 964fe080d94db82a3268443e9b9ece4c60246414:
  Linus Torvalds (1):
        Merge git://git.kernel.org/.../rusty/linux-2.6-for-linus

are available in the git repository at:

  git://neil.brown.name/md/ for-linus

Dan Williams (6):
      md/raid5: initialize conf->device_lock earlier
      md/raid456: downlevel multicore operations to raid_run_ops
      md/raid6: kill a gcc-4.0.1 'uninitialized variable' warning
      async_pq: kill a stray dma_map() call and other cleanups
      async_pq: rename scribble page
      async_tx: fix asynchronous raid6 recovery for ddf layouts

NeilBrown (8):
      Revert "md: do not progress the resync process if the stripe was blocked"
      md/raid1/raid10: add a cond_resched
      md: raid1/raid10: handle allocation errors during array setup.
      md: remove clumsy usage of do_sync_mapping_range from bitmap code
      md: fix problems with RAID6 calculations for DDF.
      md: Fix handling of raid5 array which is being reshaped to fewer devices.
      md/async: don't pass a memory pointer as a page pointer.
      raid6/async_tx: handle holes in block list in async_syndrome_val

Vladimir Dronnikov (1):
      md: drivers/md/unroll.pl replaced with awk analog

 crypto/async_tx/async_pq.c          |   60 +++++++-----
 crypto/async_tx/async_raid6_recov.c |  100 +++++++++++++-------
 crypto/async_tx/async_xor.c         |   18 ++--
 drivers/md/Makefile                 |   22 ++--
 drivers/md/bitmap.c                 |    9 +-
 drivers/md/md.c                     |    2 +-
 drivers/md/raid1.c                  |    6 +-
 drivers/md/raid10.c                 |    5 +-
 drivers/md/raid5.c                  |  182 ++++++++++++++++++-----------------
 drivers/md/raid5.h                  |   14 +++-
 drivers/md/raid6altivec.uc          |    2 +-
 drivers/md/raid6int.uc              |    2 +-
 drivers/md/raid6test/Makefile       |   42 ++++----
 drivers/md/unroll.awk               |   20 ++++
 drivers/md/unroll.pl                |   24 -----
 15 files changed, 284 insertions(+), 224 deletions(-)
 create mode 100644 drivers/md/unroll.awk
 delete mode 100644 drivers/md/unroll.pl