linux-kernel - Re: [PATCH 4/8] Drivers: scsi: storvsc: Filter WRITE_SAME

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Message-ID: <20140710100719.GA1151@infradead.org>
Date:	Thu, 10 Jul 2014 03:07:19 -0700
From:	"hch@...radead.org" <hch@...radead.org>
To:	KY Srinivasan <kys@...rosoft.com>
Cc:	James Bottomley <jbottomley@...allels.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"mkp@....net" <mkp@....net>,
	"hch@...radead.org" <hch@...radead.org>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"apw@...onical.com" <apw@...onical.com>,
	"stable@...r.kernel.org" <stable@...r.kernel.org>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	"ohering@...e.com" <ohering@...e.com>,
	"jasowang@...hat.com" <jasowang@...hat.com>
Subject: Re: [PATCH 4/8] Drivers: scsi: storvsc: Filter WRITE_SAME_16

On Wed, Jul 09, 2014 at 10:36:26PM +0000, KY Srinivasan wrote:
> Ok; I am concerned about older kernels that do not have no_write_same flag.
> I suppose I can work directly with these Distros and give them a choice: either implement
> the no_write_same flag or filter the command in our driver. I will not include this patch when

Exactly.  In general they should be interested in the flag as various
raid controllers react badly to it as well.

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