mutex_lock_nested
mutex_lock_nested(&dup_table->mutex, SINGLE_DEPTH_NESTING);
mutex_lock_nested(&table->mutex, SINGLE_DEPTH_NESTING);
mutex_lock_nested(&dup_table->mutex, SINGLE_DEPTH_NESTING);
mutex_lock_nested(&table->mutex, SINGLE_DEPTH_NESTING);
mutex_lock_nested(&dup_table->mutex, SINGLE_DEPTH_NESTING);
mutex_lock_nested(&table->mutex, SINGLE_DEPTH_NESTING);
mutex_lock_nested(&dup_table->mutex, SINGLE_DEPTH_NESTING);
mutex_lock_nested(&table->mutex, SINGLE_DEPTH_NESTING);
mutex_lock_nested(&dup_table->mutex, SINGLE_DEPTH_NESTING);
mutex_lock_nested(&table->mutex, SINGLE_DEPTH_NESTING);
mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING);
mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING);
mutex_lock_nested(&file2->mut, SINGLE_DEPTH_NESTING);
mutex_lock_nested(&file1->mut, SINGLE_DEPTH_NESTING);