6 files changed, 12 insertions, 6 deletions

diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 9dab1f51dd43..f0da2c32fbde 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -588,7 +588,7 @@ static int vhost_net_release(struct inode *inode, struct file *f)
 
         vhost_net_stop(n, &tx_sock, &rx_sock);
         vhost_net_flush(n);
-        vhost_dev_cleanup(&n->dev);
+        vhost_dev_cleanup(&n->dev, false);
         if (tx_sock)
                 fput(tx_sock->file);
         if (rx_sock)
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index bdb2d6436b2b..947f00d8e091 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -222,6 +222,8 @@ static int vhost_worker(void *data)
                 if (work) {
                         __set_current_state(TASK_RUNNING);
                         work->fn(work);
+                        if (need_resched())
+                                schedule();
                 } else
                         schedule();
 
@@ -403,7 +405,7 @@ long vhost_dev_reset_owner(struct vhost_dev *dev)
         if (!memory)
                 return -ENOMEM;
 
-        vhost_dev_cleanup(dev);
+        vhost_dev_cleanup(dev, true);
 
         memory->nregions = 0;
         RCU_INIT_POINTER(dev->memory, memory);
@@ -434,8 +436,8 @@ int vhost_zerocopy_signal_used(struct vhost_virtqueue *vq)
         return j;
 }
 
-/* Caller should have device mutex */
-void vhost_dev_cleanup(struct vhost_dev *dev)
+/* Caller should have device mutex if and only if locked is set */
+void vhost_dev_cleanup(struct vhost_dev *dev, bool locked)
 {
         int i;
 
@@ -472,7 +474,8 @@ void vhost_dev_cleanup(struct vhost_dev *dev)
         dev->log_file = NULL;
         /* No one will access memory at this point */
         kfree(rcu_dereference_protected(dev->memory,
-                                        lockdep_is_held(&dev->mutex)));
+                                        locked ==
+                                                lockdep_is_held(&dev->mutex)));
         RCU_INIT_POINTER(dev->memory, NULL);
         WARN_ON(!list_empty(&dev->work_list));
         if (dev->worker) {
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index a801e2821d03..8dcf4cca6bf2 100644
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -163,7 +163,7 @@ struct vhost_dev {
 long vhost_dev_init(struct vhost_dev *, struct vhost_virtqueue *vqs, int nvqs);
 long vhost_dev_check_owner(struct vhost_dev *);
 long vhost_dev_reset_owner(struct vhost_dev *);
-void vhost_dev_cleanup(struct vhost_dev *);
+void vhost_dev_cleanup(struct vhost_dev *, bool locked);
 long vhost_dev_ioctl(struct vhost_dev *, unsigned int ioctl, unsigned long arg);
 int vhost_vq_access_ok(struct vhost_virtqueue *vq);
 int vhost_log_access_ok(struct vhost_dev *);
diff --git a/tools/virtio/linux/hrtimer.h b/tools/virtio/linux/hrtimer.h
new file mode 100644
index 000000000000..e69de29bb2d1
--- /dev/null
+++ b/tools/virtio/linux/hrtimer.h
diff --git a/tools/virtio/linux/module.h b/tools/virtio/linux/module.h
new file mode 100644
index 000000000000..e69de29bb2d1
--- /dev/null
+++ b/tools/virtio/linux/module.h
diff --git a/tools/virtio/linux/virtio.h b/tools/virtio/linux/virtio.h
index b4fbc91c41b4..7579f19e61e0 100644
--- a/tools/virtio/linux/virtio.h
+++ b/tools/virtio/linux/virtio.h
@@ -181,6 +181,9 @@ struct virtqueue {
 #define smp_mb()        mb()
 # define smp_rmb()      barrier()
 # define smp_wmb()      barrier()
+/* Weak barriers should be used. If not - it's a bug */
+# define rmb()  abort()
+# define wmb()  abort()
 #else
 #error Please fill in barrier macros
 #endif