vhost: put mm after thread stop

makes it possible to batch use/unuse mm

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

1 files changed, 3 insertions, 4 deletions

diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index ed277276fa98..9920bae6ee43 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -401,15 +401,14 @@ void vhost_dev_cleanup(struct vhost_dev *dev)
         kfree(rcu_dereference_protected(dev->memory,
                                         lockdep_is_held(&dev->mutex)));
         RCU_INIT_POINTER(dev->memory, NULL);
-        if (dev->mm)
-                mmput(dev->mm);
-        dev->mm = NULL;
-
         WARN_ON(!list_empty(&dev->work_list));
         if (dev->worker) {
                 kthread_stop(dev->worker);
                 dev->worker = NULL;
         }
+        if (dev->mm)
+                mmput(dev->mm);
+        dev->mm = NULL;
 }
 
 static int log_access_ok(void __user *log_base, u64 addr, unsigned long sz)