On Fri, Apr 17, 2015 at 02:42:40PM -0700, James Bottomley wrote:
> > if(hostdata->msgin[1] == A_SIMPLE_TAG_MSG) {
> > - struct scsi_cmnd *SCp = scsi_find_tag(SDp,
> > hostdata->msgin[2]);
> > + struct scsi_cmnd *SCp;
> > +
> > + SCp = scsi_find_tag(SDp->host, hostdata->msgin[2]);
>
> This (and the following) is a stylistic modification and doesn't really
> belong here.
Both split lines that would grow beyond 80 lines.
> This lock/unlock is a nasty global sync point which can be eliminated:
> we can rely on the architectural atomicity of 32 bit writes (might need
> to make sdev->queue_depth a u32 because I seem to remember 16 bit writes
> had to be done as two byte stores on some architectures).
It's much more easy to understand than the barrier magic we'd otherwise
have to do, and this is a slow path. Nevermind that it would be an
unrelated change even if we had a good argument for it.
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