[GIT PULL REQUEST] md for 3.15

[NeilBrown]

Not much happening in md/raid at the moment. Just a few bug fixes (one for
-stable) and a couple of performance tweaks.

NeilBrown


The following changes since commit 455c6fdbd219161bd09b1165f11699d6d73de11c:

  Linux 3.14 (2014-03-30 20:40:15 -0700)

are available in the git repository at:

  git://neil.brown.name/md/ tags/md/3.15

for you to fetch changes up to e240c1839d11152b0355442f8ac6d2d2d921be36:

  raid5: get_active_stripe avoids device_lock (2014-04-09 14:42:42 +1000)

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Just a few md patches for the 3.15 merge window.

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NeilBrown (3):
      md/bitmap: don't abuse i_writecount for bitmap files.
      md/raid1: r1buf_pool_alloc: free allocate pages when subsequent allocation fails.
      md: avoid oops on unload if some process is in poll or select.

Shaohua Li (2):
      raid5: make_request does less prepare wait
      raid5: get_active_stripe avoids device_lock

 drivers/md/bitmap.c |  1 -
 drivers/md/md.c     | 65 ++++++++++++++++++++++++++---------------------------
 drivers/md/md.h     |  1 -
 drivers/md/raid1.c  | 17 ++++++++++----
 drivers/md/raid5.c  | 28 +++++++++++++----------
 5 files changed, 61 insertions(+), 51 deletions(-)

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