I don't think it's significant: use the version I've pushed to: http://www.kernel.org/pub/linux/kernel/people/agk/patches/2.6/editing/series.html dm-implement-basic-barrier-support.patch Alasdair -- agk@xxxxxxxxxx -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel