Re: [PATCH v3] scsi: core: Fix shost->cmd_per_lun calculation in scsi_add_host_with_dma()

Martin K. Petersen
2021-10-12T16:42:11Z

Dexuan,

> After commit ea2f0f77538c, a 416-CPU VM running on Hyper-V hangs during
> boot because the hv_storvsc driver sets scsi_driver.can_queue to an "int"
> value that exceeds SHRT_MAX, and hence scsi_add_host_with_dma() sets
> shost->cmd_per_lun to a negative "short" value.
>
> Use min_t(int, ...) to fix the issue.

I queued this up as a short term workaround. However, I am hoping that
the rework of the scaling code in storvsc lands soon.

--
Martin K. Petersen Oracle Linux Engineering