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3 Commits

Author SHA1 Message Date
Joe Thornber ed9571f0cf dm array: fix a reference counting bug in shadow_ablock 
An old array block could have its reference count decremented below
zero when it is being replaced in the btree by a new array block.

The fix is to increment the old ablock's reference count just before
inserting a new ablock into the btree.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org # 3.9+
 2013-12-13 14:22:10 -05:00
Joe Thornber 9c1d4de560 dm array: fix bug in growing array 
Entries would be lost if the old tail block was partially filled.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org # 3.9+
 2013-11-05 11:20:50 -05:00
Joe Thornber 6513c29f44 dm persistent data: add transactional array 
Add a transactional array.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
 2013-03-01 22:45:51 +00:00