tree be1306256203e951448399175af96a53175cef9a
parent 28a8f0d317bf225ff15008f5dd66ae16242dd843
author Jeff Moyer <jmoyer@redhat.com> 1465397734 -0600
committer Jens Axboe <axboe@fb.com> 1465397734 -0600

cfq-iosched: Convert from jiffies to nanoseconds

Convert all time-keeping in CFQ IO scheduler from jiffies to nanoseconds
so that we can later make the intervals more fine-grained than jiffies.
One jiffie is several miliseconds and even for today's rotating disks
that is a noticeable amount of time and thus we leave disk unnecessarily
idle.

Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>