On 4/9/21 10:03 AM, Md Haris Iqbal wrote:

Hi Jens,

This version fixes the long lines in the code as per Christoph's comment.

I'd really like to see some solid justification for the addition,
though. I clicked the v1 link and it's got details on what you get out
of it, but not really the 'why' of reasoning for the feature. I mean,
you could feasibly have a blktrace based userspace solution. Just
wondering if that has been tried, I know that's what we do at Facebook
for example.

-- 
Jens Axboe