[PULL REQUEST] md update for v3.12

[PULL REQUEST] md update for v3.12

[NeilBrown]

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The following changes since commit d8dfad3876e4386666b759da3c833d62fb8b2267:

  Linux 3.11-rc7 (2013-08-25 17:43:22 -0700)

are available in the git repository at:

  git://neil.brown.name/md/ tags/md/3.12

for you to fetch changes up to bfc90cb0936f5b972706625f38f72c7cb726c20a:

  raid5: only wakeup necessary threads (2013-09-02 10:31:29 +1000)

----------------------------------------------------------------
md update for v3.12

Headline item is multithreading for RAID5 so that more
IO/sec can be supported on fast (SSD) devices.
Also TILE-Gx SIMD suppor for RAID6 calculations and an
assortment of bug fixes.

----------------------------------------------------------------
Dave Jones (1):
      md: Fix apparent cut-and-paste error in super_90_validate

Ken Steele (1):
      RAID: add tilegx SIMD implementation of raid6

Max Filippov (1):
      raid6/test: replace echo -e with printf

NeilBrown (6):
      md: don't call md_allow_write in get_bitmap_file.
      md: fix safe_mode buglet.
      md: Don't test all of mddev->flags at once.
      md: avoid deadlock when dirty buffers during md_stop.
      md/raid5: use seqcount to protect access to shape in make_request.
      md/raid5: flush out all pending requests before proceeding with reshape.

Shaohua Li (5):
      raid5: make release_stripe lockless
      raid5: fix stripe release order
      raid5: offload stripe handle to workqueue
      raid5: sysfs entry to control worker thread number
      raid5: only wakeup necessary threads

 drivers/md/md.c         |  54 +++++---
 drivers/md/md.h         |   8 +-
 drivers/md/raid5.c      | 362 +++++++++++++++++++++++++++++++++++++++++++++---
 drivers/md/raid5.h      |  22 +++
 include/linux/raid/pq.h |   1 +
 lib/raid6/Makefile      |   6 +
 lib/raid6/algos.c       |   3 +
 lib/raid6/test/Makefile |   9 +-
 lib/raid6/tilegx.uc     |  86 ++++++++++++
 9 files changed, 510 insertions(+), 41 deletions(-)
 create mode 100644 lib/raid6/tilegx.uc

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