[GIT PULL REQUEST] md updates for 3.18

[GIT PULL REQUEST] md updates for 3.18

[NeilBrown]

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Hi Linus,
 here are some md updates for 3.18.

Thanks,
NeilBrown


The following changes since commit 8e0e99ba64c7ba46133a7c8a3e3f7de01f23bd93:

  md/raid5: disable 'DISCARD' by default due to safety concerns. (2014-10-02 13:45:00 +1000)

are available in the git repository at:

  git://neil.brown.name/md tags/md/3.18

for you to fetch changes up to b395f75eabb3844c99244928293796ff42feaa3d:

  lib/raid6: Add log level to printks (2014-10-14 13:08:29 +1100)

----------------------------------------------------------------
md updates for 3.18

- a few minor bug fixes
- quite a lot of code tidy-up and simplification
- remove PRINT_RAID_DEBUG ioctl.  I'm fairly sure
  it is unused, and it isn't particularly useful.

----------------------------------------------------------------
Anton Blanchard (1):
      lib/raid6: Add log level to printks

Chao Yu (1):
      md: avoid potential long delay under pers_lock

Markus Stockhausen (1):
      md/raid5: fix init_stripe() inconsistencies

NeilBrown (18):
      md/bitmap: always wait for writes on unplug.
      md/raid1: minor typos and reformatting.
      md: use set_bit/clear_bit instead of shift/mask for bi_flags changes.
      md/raid10: another memory leak due to reshape.
      md/raid1: process_checks doesn't use its return value.
      md: be more relaxed about stopping an array which isn't started.
      md: use wait_event() to simplify md_super_wait()
      md: discard find_rdev_nr in favour of find_rdev_nr_rcu
      md: simplify export_array()
      md: Just use RCU when checking for overlap between arrays.
      md: don't start resync thread directly from md thread.
      md: remove unwanted white space from md.c
      md: don't allow "-sync" to be set for device in an active array.
      md: remove unnecessary test for MD_MAJOR in md_ioctl()
      md: clean up 'exit' labels in md_ioctl().
      md: remove MD_BUG()
      md: discard PRINT_RAID_DEBUG ioctl
      md: move EXPORT_SYMBOL to after function in md.c

 drivers/md/bitmap.c            |  16 +-
 drivers/md/linear.c            |   8 +-
 drivers/md/md.c                | 601 +++++++++++++----------------------------
 drivers/md/md.h                |  34 ++-
 drivers/md/multipath.c         |  28 +-
 drivers/md/raid0.c             |   9 +-
 drivers/md/raid1.c             |  37 +--
 drivers/md/raid1.h             |   2 -
 drivers/md/raid10.c            |  18 +-
 drivers/md/raid5.c             |  29 +-
 drivers/md/raid5.h             |   4 +-
 include/uapi/linux/raid/md_u.h |   1 -
 lib/raid6/algos.c              |  12 +-
 13 files changed, 266 insertions(+), 533 deletions(-)

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