RE: [PATCH] storvsc: do not assume SG list is continuous when doing bounce buffers (for 4.1 stable only)

[Long Li]

> Christoph,
> 
> > Ok.  If the stable maintainers are ok with your small fix I'm not
> > going to complain too loudly.  But I'm always worried about stable
> > trees divering too much from mainline.
> 
> The seemingly innocuous transition from SG_GAPS to virt boundary has
> caused several data corruption regressions in the distro kernels. So has the
> corresponding conversion of storvsc.
> 
> As a result, getting the current upstream code into 4.1 would mean
> backporting and testing a significant amount of both block layer and driver
> code. I don't think it's worth the risk. This patch is simple and the path of least
> resistance.
> 
> Acked-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>

Sorry to bring up this patch again. It seems it hasn't made it to stable branches.

Please take a look.

> 
> --
> Martin K. Petersen	Oracle Linux Engineering