RE: [PATCH V1 7/7] Drivers: scsi: storvsc: Increase the value ofSTORVSC_MAX_IO_REQUESTS

From: KY Srinivasan
Date: Thu May 16 2013 - 09:39:12 EST




> -----Original Message-----
> From: Dan Carpenter [mailto:dan.carpenter@xxxxxxxxxx]
> Sent: Thursday, May 16, 2013 8:02 AM
> To: KY Srinivasan
> Cc: gregkh@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> devel@xxxxxxxxxxxxxxxxxxxxxx; ohering@xxxxxxxx; jbottomley@xxxxxxxxxxxxx;
> hch@xxxxxxxxxxxxx; linux-scsi@xxxxxxxxxxxxxxx; apw@xxxxxxxxxxxxx;
> jasowang@xxxxxxxxxx
> Subject: Re: [PATCH V1 7/7] Drivers: scsi: storvsc: Increase the value of
> STORVSC_MAX_IO_REQUESTS
>
> On Thu, May 16, 2013 at 05:21:19AM -0700, K. Y. Srinivasan wrote:
> > Increase the value of STORVSC_MAX_IO_REQUESTS to 200 requests. The
> current
> > ringbuffer size can support this higher value.
> >
>
> The ringbuffer size is a module parameter so it's odd to talk about
> the "current" size.

While the ringbuffer size is a module parameter; there is a default value. The current size refers to the default.
Your comment applies to the current value (of 128) as well in that it is possible for somebody to load this
driver with a ringbuffer size that could not support the value of 128. If this is the case, we fail the load.
This safety check continues to exist.

Regards,

K. Y
>
> regards,
> dan carpenter
>
>


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