Re: [PATCH 1/1] Drivers: scsi: storvsc: Add blist flags

[Hannes Reinecke]

On 07/22/2014 01:06 AM, K. Y. Srinivasan wrote:
> Add blist flags to permit the reading of the VPD pages even when
> the target may claim SPC-2 compliance. MSFT targets currently
> claim SPC-2 compliance while they implement post SPC-2 features.
> With this patch we can correctly handle WRITE_SAME_16 issues.
>
> Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
> ---
>   drivers/scsi/storvsc_drv.c |   10 ++++++++++
>   1 files changed, 10 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
> index 29d0329..15ba695 100644
> --- a/drivers/scsi/storvsc_drv.c
> +++ b/drivers/scsi/storvsc_drv.c
> @@ -327,6 +327,8 @@ MODULE_PARM_DESC(storvsc_ringbuffer_size, "Ring buffer size (bytes)");
>    */
>   static int storvsc_timeout = 180;
>
> +static int msft_blist_flags = BLIST_TRY_VPD_PAGES;
> +
>   #define STORVSC_MAX_IO_REQUESTS				200
>
>   static void storvsc_on_channel_callback(void *context);
> @@ -1449,6 +1451,14 @@ static int storvsc_device_configure(struct scsi_device *sdevice)
>
>   	sdevice->no_write_same = 1;
>
> +	/*
> +	 * Add blist flags to permit the reading of the VPD pages even when
> +	 * the target may claim SPC-2 compliance. MSFT targets currently
> +	 * claim SPC-2 compliance while they implement post SPC-2 features.
> +	 * With this patch we can correctly handle WRITE_SAME_16 issues.
> +	 */
> +	sdevice->sdev_bflags |= msft_blist_flags;
> +
>   	return 0;
>   }
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>

Cheers,

Hannes
--
Dr. Hannes Reinecke		      zSeries & Storage
hare@xxxxxxx			      +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
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