Re: [PATCH block-5.14] Revert "block/mq-deadline: Add cgroup support"
From: Bart Van Assche <bvanassche@acm.org>
Date: 2021-08-11 20:22:27
On 8/11/21 12:14 PM, Tejun Heo wrote:
On Wed, Aug 11, 2021 at 11:49:10AM -0700, Bart Van Assche wrote:quoted
You write that this isn't the right way to collect per cgroup stats. What is the "right way"? Has this been documented somewhere?Well, there's nothing specific to mq-deadline or any other elevator or controller about the stats that your patch collected and showed. That seems like a pretty straight forward sign that it likely doens't belong there.
Do you perhaps want these statistics to be reported via read-only cgroup attributes of a new cgroup policy that is independent of any particular I/O scheduler? Thanks, Bart.