MDEV-27417 InnoDB spatial index updates change buffer bitmap page

- InnoDB change buffer doesn't support spatial index. Spatial
index should avoid change the buffer bitmap page when the page
split happens.

mysql-test/suite/innodb_gis/r/rtree_split.result

@@ -61,3 +61,10 @@ select count(*) from t1 where MBRWithin(t1.c2, @g1);
 count(*)
 57344
 drop table t1;
+#
+# MDEV-27417 Spatial index tries to update
+#	change buffer bookkeeping page
+#
+CREATE TEMPORARY TABLE t1 (c POINT NOT NULL, SPATIAL(c)) ENGINE=InnoDB;
+INSERT INTO t1 SELECT PointFromText('POINT(0 0)') FROM seq_1_to_366;
+DROP TABLE t1;

mysql-test/suite/innodb_gis/t/rtree_split.test

@@ -72,3 +72,11 @@ select count(*) from t1 where MBRWithin(t1.c2, @g1);
 
 # Clean up.
 drop table t1;
+
+--echo #
+--echo # MDEV-27417 Spatial index tries to update
+--echo #	change buffer bookkeeping page
+--echo #
+CREATE TEMPORARY TABLE t1 (c POINT NOT NULL, SPATIAL(c)) ENGINE=InnoDB;
+INSERT INTO t1 SELECT PointFromText('POINT(0 0)') FROM seq_1_to_366;
+DROP TABLE t1;

storage/innobase/gis/gis0rtree.cc

@@ -1262,15 +1262,6 @@ after_insert:
 	page_zip = buf_block_get_page_zip(root_block);
 	page_set_ssn_id(root_block, page_zip, next_ssn, mtr);
 
-	/* Insert fit on the page: update the free bits for the
-	left and right pages in the same mtr */
-
-	if (page_is_leaf(page)) {
-		ibuf_update_free_bits_for_two_pages_low(
-			block, new_block, mtr);
-	}
-
-
 	/* If the new res insert fail, we need to do another split
 	 again. */
 	if (!rec) {