[PATCH] vhost: error handling fix

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vhost should set worker to NULL on cgroups attach failure,
so that we won't try to destroy the worker again on close.

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

Dave, no need to bother with this one unless you really want to -
I'll put it on my tree.

This is a follow up to Eric's patch - fixes error handling in a similar way.

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

diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 7c75dce..666aa36 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -298,6 +298,7 @@ static long vhost_dev_set_owner(struct vhost_dev *dev)
 	return 0;
 err_cgroup:
 	kthread_stop(worker);
+	dev->worker = NULL;
 err_worker:
 	if (dev->mm)
 		mmput(dev->mm);
-- 
1.7.2.rc0.14.g41c1c
--
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