linux-kernel - Re: [PATCH 2/3] scsi: fnic: Stop setting scsi

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Date:   Sat, 14 Aug 2021 09:39:48 +0200
From:   Christoph Hellwig <hch@....de>
To:     Bart Van Assche <bvanassche@....org>
Cc:     John Garry <john.garry@...wei.com>, satishkh@...co.com,
        sebaddel@...co.com, kartilak@...co.com, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org, hare@...e.de, hch@....de
Subject: Re: [PATCH 2/3] scsi: fnic: Stop setting scsi_cmnd.tag

On Fri, Aug 13, 2021 at 08:17:45PM -0700, Bart Van Assche wrote:
> On 8/13/21 6:49 AM, John Garry wrote:
> > It is never read. Setting it and the request tag seems dodgy
> > anyway.
> 
> This is done because there is code in the SCSI error handler that may
> allocate a SCSI command without allocating a tag. See also
> scsi_ioctl_reset().

Yes.  Hannes had a great series to stop passing the pointless scsi_cmnd
to the reset methods.  Hannes, any chance you coul look into
resurrecting that?