[PATCH RFC] vhost: fix zcopy reference counting

From: Michael S. Tsirkin
Date: Tue Jul 19 2011 - 06:33:11 EST

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@xxxxxxxxxx>

Dave, I've put this on my tree so no need for you to bother.

drivers/vhost/vhost.c | 1 -
1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 46822c0..c16d225 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -1578,7 +1578,6 @@ struct vhost_ubuf_ref *vhost_ubuf_alloc(struct vhost_virtqueue *vq,
if (!ubufs)
return ERR_PTR(-ENOMEM);
- kref_get(&ubufs->kref);
ubufs->vq = vq;
return ubufs;
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/