On Wed, Nov 02, 2016 at 08:55:16AM -0600, Jens Axboe wrote: > On 11/02/2016 08:52 AM, Christoph Hellwig wrote: >> On Tue, Nov 01, 2016 at 03:05:22PM -0600, Jens Axboe wrote: >>> For legacy block, we simply track them in the request queue. For >>> blk-mq, we track them on a per-sw queue basis, which we can then >>> sum up through the hardware queues and finally to a per device >>> state. >> >> what is the use case for the legacy request tracking? > > Buffered writeback code uses the same base. Additionally, it could > replace some user space tracking for latency outliers that people are > currently running. Ok. -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
