kv: fix iterator bug in prev

Signed-off-by: Haodong Tang <haodong.tang@intel.com>
ceph · Aug 12, 2016 · b8551bd · b8551bd
1 parent 619736c
commit b8551bd
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/kv/MemDB.cc b/src/kv/MemDB.cc
@@ -478,11 +478,12 @@ int MemDB::MDBWholeSpaceIteratorImpl:: prev()
     return -1;
   }
   free_last();
-  m_iter--;
-  if (m_iter != m_btree_p->end()) {
+  if (m_iter != m_btree_p->begin()) {
+    m_iter--;
     fill_current();
     return 0;
   } else {
+    m_iter--;
     return -1;
   }
 }