Index: handler/ha_innodb.cc
===================================================================
--- handler/ha_innodb.cc	(revision 2541)
+++ handler/ha_innodb.cc	(working copy)
@@ -5832,15 +5832,25 @@ ha_innobase::info(
 		stats.data_file_length = ((ulonglong)
 				ib_table->stat_clustered_index_size)
 					* UNIV_PAGE_SIZE;
 		stats.index_file_length = ((ulonglong)
 				ib_table->stat_sum_of_other_index_sizes)
 					* UNIV_PAGE_SIZE;
-		stats.delete_length =
-			fsp_get_available_space_in_free_extents(
-				ib_table->space) * 1024;
+
+		/* Since fsp_get_available_space_in_free_extents() is
+		acquiring locks, we only call it if we are not asked
+		to avoid locking. See Bug#38185.
+		We do not update delete_length if no locking is requested
+		so the "old" value can remain. delete_length is initialized
+		to 0 in the ha_statistics' constructor. */
+		if (!(flag & HA_STATUS_NO_LOCK)) {
+			stats.delete_length =
+				fsp_get_available_space_in_free_extents(
+					ib_table->space) * 1024;
+		}
+
 		stats.check_time = 0;
 
 		if (stats.records == 0) {
 			stats.mean_rec_length = 0;
 		} else {
 			stats.mean_rec_length = (ulong) (stats.data_file_length / stats.records);