xapi-project/blktap — pull request #79 by amesserl (2014-05-01 13:22:29+00:00)
Title: Adding better kernel version detection for tapdisk-utils

This prevents the failing on the call to io_setup with EINVAL. Tapdisk currently detects
kernel version for eventfd by looking for 'x.y.z', which fails on the newer kernel versions.

Credit goes to James Harper from http://lists.xen.org/archives/html/xen-devel/2013-12/msg01185.html