On Fri, Apr 25, 2014 at 3:49 PM, David Rientjes <rientjes@xxxxxxxxxx> wrote:
>
> Hmm, I see why this is needed because of the scsi_put_command(cmd), but I
> think you need to do struct scsi_device *sdev = ACCESS_ONCE(cmd->device)
> instead to prevent gcc from messing with the code generation.
No, if gcc were to move the access to 'cmd' to after the
'scsi_put_command(cmd)', that would be a major compiler bug.
Compilers can't just randomly move code around, guys.
Linus
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