[PULLREQUEST] md bugfix for 3.1

[PULLREQUEST] md bugfix for 3.1

[NeilBrown]

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Hi Linus,
 please pull this one patch which fixes a race in md thread wakeup at the
 same time as shutdown.  This is also a case where it isn't a race but a
 definite "will try to wake up a non-existent thread" when trying to start
 RAID10 that doesn't have enough working disks.

 This is tagged for -stable.

Thanks,
NeilBrown


The following changes since commit 976d167615b64e14bc1491ca51d424e2ba9a5e84:

  Linux 3.1-rc9 (2011-10-04 18:11:50 -0700)

are available in the git repository at:
  git://neil.brown.name/md/ for-linus

  last commit being 01f96c0a9922cd9919baf9d16febdf7016177a12

NeilBrown (1):
      md: Avoid waking up a thread after it has been freed.

 drivers/md/md.c        |   22 +++++++++++++++++++---
 drivers/md/md.h        |    2 +-
 drivers/md/multipath.c |    3 +--
 drivers/md/raid1.c     |    3 +--
 drivers/md/raid10.c    |    5 ++---
 drivers/md/raid5.c     |    6 ++----
 6 files changed, 26 insertions(+), 15 deletions(-)

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