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> -- Martin K. Petersen Oracle Linux Engineering