[git pull] device mapper fixes for 4.0-rc5

[git pull] device mapper fixes for 4.0-rc5

[Mike Snitzer]

Hi Linus,

The following changes since commit c517d838eb7d07bbe9507871fab3931deccff539:

  Linux 4.0-rc1 (2015-02-22 18:21:14 -0800)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm tags/dm-4.0-fixes

for you to fetch changes up to e5db29806b99ce2b2640d2e4d4fcb983cea115c5:

  dm io: deal with wandering queue limits when handling REQ_DISCARD and REQ_WRITE_SAME (2015-02-27 14:53:32 -0500)

Please pull, thanks.
Mike

----------------------------------------------------------------
A handful of stable fixes for DM:
- fix thin target to always zero-fill reads to unprovisioned blocks
- fix to interlock device destruction's suspend from internal suspends
- fix 2 snapshot exception store handover bugs
- fix dm-io to cope with DISCARD and WRITE_SAME capabilities changing

----------------------------------------------------------------
Darrick J. Wong (1):
      dm io: deal with wandering queue limits when handling REQ_DISCARD and REQ_WRITE_SAME

Joe Thornber (1):
      dm thin: fix to consistently zero-fill reads to unprovisioned blocks

Mikulas Patocka (3):
      dm: hold suspend_lock while suspending device during device deletion
      dm snapshot: suspend origin when doing exception handover
      dm snapshot: suspend merging snapshot when doing exception handover

 drivers/md/dm-io.c            |  15 ++++--
 drivers/md/dm-snap.c          | 120 ++++++++++++++++++++++++++++++++++++++----
 drivers/md/dm-thin.c          |  11 ----
 drivers/md/dm.c               |  21 ++++++++
 include/linux/device-mapper.h |   1 +
 5 files changed, 142 insertions(+), 26 deletions(-)