On 08/18/2017 05:08 PM, Shaohua Li wrote: > discard request usually is very big and easily use all bandwidth budget > of a cgroup. discard request size doesn't really mean the size of data > written, so it doesn't make sense to account it into bandwidth budget. > Jens pointed out treating the size 0 doesn't make sense too, because > discard request does have cost. But it's not easy to find the actual > cost. This patch simply makes the size one sector. This looks good to me now, applied for 4.13. -- Jens Axboe