block/diskstats: more accurate approximation of io_ticks for slow disks

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Subject: block/diskstats: more accurate approximation of io_ticks for slow disks
From: "Banerjee, Debabrata" <dbanerje@xxxxxxxxxx>
Date: Tue, 29 Sep 2020 21:06:09 +0000
Accept-language: en-US
Cc: "'Konstantin Khlebnikov'" <khlebnikov@xxxxxxxxxxxxxx>
Thread-index: AdaWo1DS0JdD8FofSbOj6tZpu0wINg==
Thread-topic: block/diskstats: more accurate approximation of io_ticks for slow disks

commit: 2b8bd423614c595540eaadcfbc702afe8e155e50

Please apply to linux-5.4.y. Without this fix, disk utilization reporting is
unusable, especially on spinning disks.

Thanks,
Deb

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