[PATCH 0/4] dm and bcache refcount conversions

[Elena Reshetova <elena.reshetova@intel.com>]

This series, for dm and bcache parts, replaces atomic_t reference
counters with the new refcount_t type and API (see include/linux/refcount.h).
By doing this we prevent intentional or accidental
underflows or overflows that can led to use-after-free vulnerabilities.

The patches are fully independent and can be cherry-picked separately.
Patches are based on top of linux-next as of yesterday.
If there are no objections to the patches, please merge them via respective trees

Elena Reshetova (4):
  bcache: convert cached_dev.count from atomic_t to refcount_t
  dm cache: convert dm_cache_metadata.ref_count from atomic_t to
    refcount_t
  dm: convert dm_dev_internal.count from atomic_t to refcount_t
  dm: convert table_device.count from atomic_t to refcount_t

 drivers/md/bcache/bcache.h     |  7 ++++---
 drivers/md/bcache/super.c      |  6 +++---
 drivers/md/bcache/writeback.h  |  2 +-
 drivers/md/dm-cache-metadata.c |  9 +++++----
 drivers/md/dm-table.c          |  6 +++---
 drivers/md/dm.c                | 12 +++++++-----
 drivers/md/dm.h                |  3 ++-
 7 files changed, 25 insertions(+), 20 deletions(-)

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2.7.4