-extern void RegisterPredicateLockingXid(const TransactionId xid);
-extern void PredicateLockRelation(const Relation relation, const Snapshot snapshot);
-extern void PredicateLockPage(const Relation relation, const BlockNumber blkno, const Snapshot snapshot);
-extern void PredicateLockTuple(const Relation relation, const HeapTuple tuple, const Snapshot snapshot);
-extern void PredicateLockPageSplit(const Relation relation, const BlockNumber oldblkno, const BlockNumber newblkno);
-extern void PredicateLockPageCombine(const Relation relation, const BlockNumber oldblkno, const BlockNumber newblkno);
-extern void TransferPredicateLocksToHeapRelation(const Relation relation);
-extern void ReleasePredicateLocks(const bool isCommit);
+extern void RegisterPredicateLockingXid(TransactionId xid);
+extern void PredicateLockRelation(Relation relation, Snapshot snapshot);
+extern void PredicateLockPage(Relation relation, BlockNumber blkno, Snapshot snapshot);
+extern void PredicateLockTuple(Relation relation, HeapTuple tuple, Snapshot snapshot);
+extern void PredicateLockPageSplit(Relation relation, BlockNumber oldblkno, BlockNumber newblkno);
+extern void PredicateLockPageCombine(Relation relation, BlockNumber oldblkno, BlockNumber newblkno);
+extern void TransferPredicateLocksToHeapRelation(Relation relation);
+extern void ReleasePredicateLocks(bool isCommit);