> > Are they equivalent in the single disk case to my patch? > It transforms barrier to normal bio with following zero-size barrier bio. > For the one disk case effect is the same of course. Ok fine assuming they work. Will they be ready for the 2.6.28 merge window? If not I would still prefer my patch for .28 -Andi -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel