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vhost: fix zcopy reference counting

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Fix get/put refcount imbalance with zero copy,
which caused qemu to hang forever on guest driver unload.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Michael S. Tsirkin
2011-07-19 13:19:18 +03:00
parent 2723feaa8e
commit 75fd9edc10
1 changed files with 0 additions and 1 deletions
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drivers/vhost/vhost.c
-1
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@@ -1578,7 +1578,6 @@ struct vhost_ubuf_ref *vhost_ubuf_alloc(struct vhost_virtqueue *vq,
if (!ubufs)
return ERR_PTR(-ENOMEM);
kref_init(&ubufs->kref);
kref_get(&ubufs->kref);
init_waitqueue_head(&ubufs->wait);
ubufs->vq = vq;
return ubufs;