Three little fixes to make the block backend by a bit smarter whendealing with frontends that put bogus data on the ring. drivers/block/xen-blkback/blkback.c | 12 +++++++++--- drivers/block/xen-blkback/common.h | 2 ++ drivers/block/xen-blkback/xenbus.c | 2 ++ include/xen/interface/io/ring.h | 6 ++++++ 4 files changed, 19 insertions(+), 3 deletions(-)