RE: [PATCH] sd: Fix rw_max for devices that report an optimal xfer size

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It tested well with hyper-v virtual disk.

Tested-by: Long Li <longli@xxxxxxxxxxxxx>

> -----Original Message-----
> From: linux-scsi-owner@xxxxxxxxxxxxxxx [mailto:linux-scsi-
> owner@xxxxxxxxxxxxxxx] On Behalf Of Andrew Patterson
> Sent: Wednesday, June 1, 2016 2:57 PM
> To: Christoph Hellwig <hch@xxxxxxxxxxxxx>; Martin K. Petersen
> <martin.petersen@xxxxxxxxxx>
> Cc: linux-scsi@xxxxxxxxxxxxxxx; stable@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH] sd: Fix rw_max for devices that report an optimal xfer
> size
> 
> On 06/01/2016 01:52 AM, Christoph Hellwig wrote:
> > Looks fine,
> >
> > Reviewed-by: Christoph Hellwig <hch@xxxxxx>
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> >
> 
> I tested this patch on a 3Par array (32K optimal transfer length) that has
> issues without this patch. After applying this patch on a linux-stable kernel,
> optimal_io_size is correctly reported as 32K.
> 
> Tested-by: Andrew Patterson <andrew.patterson@xxxxxxx>
> 
> --
> Andrew Patterson
> Hewlett-Packard Enterprise
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