Is it reasonable that lock_time is not included when decide SERVER_QUERY_WAS_SLOW

[xiaobin lin]

As in the code
"
void update_server_status()
{
ulonglong end_utime_of_query= current_utime();
if (end_utime_of_query > utime_after_lock + variables.long_query_time)
server_status|= SERVER_QUERY_WAS_SLOW;
}
"

This means that when deciding whether the query is a slow_query, the lock time is excluded.

Is it reasonable?
Will it be better to use start_utime to instead utime_after_lock here?