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Subject[PATCH 0/4] dm and bcache refcount conversions
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
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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