From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH] megaraid_sas: Enable shared host tag map
Date: Mon, 24 Nov 2014 16:35:58 +0100
Message-ID: <20141124153558.GA27364@lst.de>
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To: Hannes Reinecke <hare@suse.de>
Cc: James Bottomley <jbottomley@parallels.com>, Sumit Saxena <sumit.saxena@avagotech.com>, Kashyap Desai <kashyap.desai@avagotech.com>, Christoph Hellwig <hch@lst.de>, linux-scsi@vger.kernel.org

On Mon, Nov 24, 2014 at 04:33:55PM +0100, Hannes Reinecke wrote:
> The megaraid SAS driver uses a shared host tag map internally,
> so we should be telling the block layer about it.

But it doesn't make use of request->tag yet.  This would only be
useful if you got rid of the internal tag allocator.