[git pull] Further device-mapper fixes for 3.5

[Alasdair G Kergon]

Please pull from:
 
  git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm tags/dm-3.5-fixes-2

to get the following further device-mapper fixes for 3.5.
 
Thanks,
Alasdair
  
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Three fixes for device-mapper discard processing:
  - avoid a crash in dm-raid1 when discards coincide with mirror recovery;
  - avoid discarding shared data that's still needed in dm-thin;
  - don't guarantee that discarded blocks will be wiped in dm-raid1.

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Mikulas Patocka (3):
      dm raid1: fix crash with mirror recovery and discard
      dm thin: do not send discards to shared blocks
      dm raid1: set discard_zeroes_data_unsupported

 drivers/md/dm-raid1.c       |    3 ++-
 drivers/md/dm-region-hash.c |    5 ++++-
 drivers/md/dm-thin.c        |    6 +++++-
 3 files changed, 11 insertions(+), 3 deletions(-)
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