Independent of whether this should be required to make scsi quience safe or not making the dm thread freeze aware is the right thing to do, and this patch looks correct to me: Reviewed-by: Christoph Hellwig <hch@xxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html