tree 92fda29b75a081151d6e460f7ae8ec874517b6e5
parent 7b3384fc30633738ae4eaf8e1bc6ce70470ced80
author Michael S. Tsirkin <mst@redhat.com> 1279196352 +0300
committer Michael S. Tsirkin <mst@redhat.com> 1279196772 +0300

vhost-net: avoid flush under lock

We flush under vq mutex when changing backends.
This creates a deadlock as workqueue being flushed
needs this lock as well.

https://bugzilla.redhat.com/show_bug.cgi?id=612421

Drop the vq mutex before flush: we have the device mutex
which is sufficient to prevent another ioctl from touching
the vq.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>