--- linux-2.6-xfs/fs/xfs/xfs_dir2_node.c	2008-03-22 22:41:12.118699220 +0800
+++ linux-xfs-usig/fs/xfs/xfs_dir2_node.c	2008-03-22 22:48:07.694781678 +0800
@@ -1502,8 +1502,10 @@ xfs_dir2_node_addname_int(
 				 */
 				xfs_da_brelse(tp, fbp);
 				fbp = NULL;
-				if (fblk && fblk->bp)
+				if (fblk && fblk->bp) {
 					fblk->bp = NULL;
+					fbno = -1;
+				}
 			}
 		}
 	}