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Keir Fraser authored
A guest can cause the backend driver to leak a kernel thread. Such leaked threads hold references to the device, whichmakes the device impossible to tear down. If shut down, the guest remains a zombie domain, the xenwatch process hangs, and most xm commands will stop working. This patch tries to do the following for blkback: - identify/extract idempotent teardown operations, - add/move the invocation of said teardown operation right before we're about to allocate new resources in the Connected states. [ linux-2.6.18-xen.hg 59f097ef181b ] Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Keir Fraser <keir@xen.org> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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