linux-kernel - RE: [PATCH 7/8] drivers: scsi: storvsc: Set srb

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Message-ID: <651b6b11c6d6415cb0046ce03b6b2c63@BY2PR03MB299.namprd03.prod.outlook.com>
Date:	Wed, 9 Jul 2014 18:40:09 +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 7/8] drivers: scsi: storvsc: Set srb_flags in all cases



> -----Original Message-----
> From: Christoph Hellwig [mailto:hch@...radead.org]
> Sent: Wednesday, July 9, 2014 1:45 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 7/8] drivers: scsi: storvsc: Set srb_flags in all cases
> 
> On Tue, Jul 08, 2014 at 05:46:51PM -0700, K. Y. Srinivasan wrote:
> > Correctly set SRB flags for all valid I/O directions. Some IHV drivers
> > on the Windows host require this.
> 
> What are IHV drivers?

If the target is a SAN device, the host simply passes the request over to the native driver stack on the host. Some specific hardware (IHV - independent hadware vendor) drivers on Windows require that SRB flags be correctly set in all cases.

Regards,

K. Y
> 
> 
> Otherwise looks fine,
> 
> Reviewed-by: Christoph Hellwig <hch@....de>
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