[git pull] device-mapper fixes for 3.4

[Alasdair G Kergon <agk@redhat.com>]

Please pull from:

  git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm tags/dm-3.4-fixes

to get the following device-mapper fixes for 3.4.

Thanks,
Alasdair

----------------------------------------------------------------
Device-mapper fixes for 3.4.

Fix a couple of serious memory leaks in device-mapper thin provisioning
and tidy its MODULE_DESCRIPTION.

Mitigate occasional reported hangs associated with multipath scsi_dh
module loading.

----------------------------------------------------------------
Alasdair G Kergon (1):
      dm thin: correct module description

Mike Snitzer (3):
      dm thin: reinstate missing mempool_free in cell_release_singleton
      dm thin: fix unprotected use of prepared_discards list
      dm mpath: check if scsi_dh module already loaded before trying to load

 drivers/md/dm-mpath.c |    4 ++--
 drivers/md/dm-thin.c  |   16 ++++++++++++----
 2 files changed, 14 insertions(+), 6 deletions(-)