linux-kernel - Re: [PATCH 4.4 34/91] scsi: storvsc: use tagged SRB requests if supported by the device

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Message-ID: <20170310152131.GA20522@kroah.com>
Date:   Fri, 10 Mar 2017 16:21:31 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Ben Hutchings <ben@...adent.org.uk>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Long Li <longli@...rosoft.com>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Subject: Re: [PATCH 4.4 34/91] scsi: storvsc: use tagged SRB requests if
 supported by the device

On Fri, Mar 10, 2017 at 02:56:59PM +0000, Ben Hutchings wrote:
> On Fri, 2017-03-10 at 10:08 +0100, Greg Kroah-Hartman wrote:
> > 4.4-stable review patch.  If anyone has any objections, please let me know.
> > 
> > ------------------
> > 
> > From: Long Li <longli@...rosoft.com>
> > 
> > commit 3cd6d3d9b1abab8dcdf0800224ce26daac24eea2 upstream.
> > 
> > Properly set SRB flags when hosting device supports tagged queuing.
> > This patch improves the performance on Fiber Channel disks.
> [...]
> 
> This looks more like a feature/optimisation than a bug fix.  Is this
> really within the stable rules?

Making things work properly (i.e. i/o does not suck anymore), is ok for
stable stuff.  KY, that's the case here, right?

thanks,

greg k-h