linux-kernel - RE: [PATCH 1/8] Drivers: scsi: storvsc: Change the limits to reflect the values on the host

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Date:	Wed, 9 Jul 2014 20:07:25 +0000
From:	KY Srinivasan <kys@...rosoft.com>
To:	Christoph Hellwig <hch@...radead.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"ohering@...e.com" <ohering@...e.com>,
	"jbottomley@...allels.com" <jbottomley@...allels.com>,
	"jasowang@...hat.com" <jasowang@...hat.com>,
	"apw@...onical.com" <apw@...onical.com>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	"stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: RE: [PATCH 1/8] Drivers: scsi: storvsc: Change the limits to reflect
 the values on the host



> -----Original Message-----
> From: Christoph Hellwig [mailto:hch@...radead.org]
> Sent: Wednesday, July 9, 2014 1:40 AM
> To: KY Srinivasan
> Cc: linux-kernel@...r.kernel.org; devel@...uxdriverproject.org;
> ohering@...e.com; jbottomley@...allels.com; jasowang@...hat.com;
> apw@...onical.com; linux-scsi@...r.kernel.org; stable@...r.kernel.org
> Subject: Re: [PATCH 1/8] Drivers: scsi: storvsc: Change the limits to reflect the
> values on the host
> 
> On Tue, Jul 08, 2014 at 05:46:45PM -0700, K. Y. Srinivasan wrote:
> > + * In Hyper-V, each port/path/target maps to 1 scsi host adapter.
> 
> Does it still?  The STORVSC_FC_MAX_TARGETS define suggests otherwise.

I will fix the comments and get rid of unnecessary comments.

> 
> > -	.cmd_per_lun =		1,
> > +	.cmd_per_lun =		255,
> 
> This looks like an unrelated change.

I will have a separate patch for this.
> 
> > +		/* max # of devices per target */
> > +		host->max_lun = STORVSC_FC_MAX_LUNS_PER_TARGET;
> > +		/* max # of targets per channel */
> > +		host->max_id = STORVSC_FC_MAX_TARGETS;
> > +		/* max # of channels */
> > +		host->max_channel = STORVSC_FC_MAX_CHANNELS - 1;
> 
> I don't think these comments add any value..

I will get rid of the comments.

> 
> Also any reason you use off by one defines for max_channel, but not the
> others?

No particular reason; I will clean this up.


Thanks Christoph for the detailed comments. I will re-spin these after I address your comments.

Regards,

K. Y
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