On 10/26/2017 10:43 PM, Ming Lei wrote: > Hi Jens, > > The 1st patch removes the RESTART for TAG-SHARED because SCSI handles it > by itself, and not necessary to waste CPU to do the expensive RESTART. > And Roman Pen reported that this RESTART cuts half of IOPS in his case. > > The 2nd patch removes the RESTART when .get_budget returns BLK_STS_RESOURCE, > and this RESTART is handled by SCSI's RESTART(scsi_end_request()) too. What base is this against? -- Jens Axboe
