4 Commits

Author	SHA1	Message	Date
Joe Thornber	8001e87d0e	dm array: if resizing the array is a noop set the new root to the old one ... This could've been quite bad (to return success but not update the new root to point at the old) but in practice the only known consumer of the dm array code is the DM cache target. And the DM cache target passes in the same old root to array_resize() anyway. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>	2014-12-01 11:30:07 -05:00
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