Merge aivanov@bk-internal.mysql.com:/home/bk/mysql-5.0

into  mysql.com:/home/alexi/innodb/mysql-5.0-merged

innobase/btr/btr0sea.c

@@ -59,9 +59,6 @@ before hash index building is started */
 
 #define BTR_SEARCH_BUILD_LIMIT		100
 
-/* How many cells to check before temporarily releasing btr_search_latch */
-#define BTR_CHUNK_SIZE			10000
-
 /************************************************************************
 Builds a hash index on a page with the given parameters. If the page already
 has a hash index with different parameters, the old hash index is removed.
@@ -1607,6 +1604,11 @@ btr_search_validate(void)
 	mem_heap_t*	heap		= NULL;
 	ulint		offsets_[REC_OFFS_NORMAL_SIZE];
 	ulint*		offsets		= offsets_;
+
+	/* How many cells to check before temporarily releasing
+	btr_search_latch. */
+	ulint		chunk_size = 10000;
+	
 	*offsets_ = (sizeof offsets_) / sizeof *offsets_;
 
 	rw_lock_x_lock(&btr_search_latch);
@@ -1616,7 +1618,7 @@ btr_search_validate(void)
 	for (i = 0; i < cell_count; i++) {
 		/* We release btr_search_latch every once in a while to
 		give other queries a chance to run. */
-		if ((i != 0) && ((i % BTR_CHUNK_SIZE) == 0)) {
+		if ((i != 0) && ((i % chunk_size) == 0)) {
 			rw_lock_x_unlock(&btr_search_latch);
 			os_thread_yield();
 			rw_lock_x_lock(&btr_search_latch);
@@ -1675,8 +1677,8 @@ btr_search_validate(void)
 		}
 	}
 
-	for (i = 0; i < cell_count; i += BTR_CHUNK_SIZE) {
-		ulint end_index = ut_min(i + BTR_CHUNK_SIZE - 1, cell_count - 1);
+	for (i = 0; i < cell_count; i += chunk_size) {
+		ulint end_index = ut_min(i + chunk_size - 1, cell_count - 1);
 		
 		/* We release btr_search_latch every once in a while to
 		give other queries a chance to run. */

sql/ha_innodb.cc

@@ -989,7 +989,6 @@ innobase_query_caching_of_table_permitted(
 		mutex_enter_noninline(&kernel_mutex);
 		trx_print(stderr, trx, 1024);
 		mutex_exit_noninline(&kernel_mutex);
-		ut_error;
 	}
 
 	innobase_release_stat_resources(trx);
@@ -3832,7 +3831,14 @@ ha_innobase::unlock_row(void)
 		mem_analyze_corruption((byte *) prebuilt->trx);
 		ut_error;
 	}
-	
+
+	/* Consistent read does not take any locks, thus there is
+	nothing to unlock. */
+
+	if (prebuilt->select_lock_type == LOCK_NONE) {
+		DBUG_VOID_RETURN;
+	}
+
 	if (srv_locks_unsafe_for_binlog) {
 		row_unlock_for_mysql(prebuilt, FALSE);
 	}