Hi, If I throttle a DIO/AIO WRITE bio at block device in a cgroup, will it lead to any kind of serialization of ext4 file system. IOW, is there any filesystem operation which will wait for that DIO/AIO WRITE to finish before other filesystem can make progress (fsync, journalling etc?) I know that for throttling of buffered WRITES I do run into serialization issues hence I was thinking of moving throttling buffered WRITE while they are entering page cache and get rid of issues related to filesystem serialization. I am not sure about DIO/AIO WRITES hence the question. Thanks Vivek -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html