Re: [PATCH] scsi: sd: Optimal I/O size should be a multiple of physical block size

[Christoph Hellwig <hch@xxxxxxxxxxxxx>]

On Fri, Feb 08, 2019 at 06:41:47PM -0500, Martin K. Petersen wrote:
> It was reported that some devices report an OPTIMAL TRANSFER LENGTH of
> 0xFFFF blocks. That looks bogus, especially for a device with a
> 4096-byte physical block size.
> 
> Ignore OPTIMAL TRANSFER LENGTH if it is not a multiple of the device's
> reported physical block size.

Looks generally fine, but should we log a warning in case of a bogus
OPTIMAL TRANSFER LENGTH?