Fix page_split with MDB_RESERVE

diff --git a/libraries/libmdb/mdb.c b/libraries/libmdb/mdb.c
index dc333e9..5ef3022 100644 (file)
--- a/libraries/libmdb/mdb.c
+++ b/libraries/libmdb/mdb.c
@@ -5520,10 +5520,6 @@ newsep:
                rc = mdb_node_add(mc, j, &rkey, rdata, pgno, flags);
        }
 
-       /* reset back to original page */
-       if (newindx < split_indx)
-               mc->mc_pg[mc->mc_top] = mp;
-
        nkeys = NUMKEYS(copy);
        for (i=0; i<nkeys; i++)
                mp->mp_ptrs[i] = copy->mp_ptrs[i];
@@ -5532,6 +5528,16 @@ newsep:
        memcpy(NODEPTR(mp, nkeys-1), NODEPTR(copy, nkeys-1),
                mc->mc_txn->mt_env->me_psize - copy->mp_upper);
 
+       /* reset back to original page */
+       if (newindx < split_indx) {
+               mc->mc_pg[mc->mc_top] = mp;
+               if (nflags & MDB_RESERVE) {
+                       node = NODEPTR(mp, mc->mc_ki[mc->mc_top]);
+                       if (!(node->mn_flags & F_BIGDATA))
+                               newdata->mv_data = NODEDATA(node);
+               }
+       }
+
        /* return tmp page to freelist */
        copy->mp_next = mc->mc_txn->mt_env->me_dpages;
        mc->mc_txn->mt_env->me_dpages = copy;