Re: [PATCH v9 05/32] virtio_ring: extract the logic of freeing vring

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在 2022/4/6 上午11:43, Xuan Zhuo 写道:
Introduce vring_free() to free the vring of vq.

Subsequent patches will use vring_free() alone.

Signed-off-by: Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>


Acked-by: Jason Wang <jasowang@xxxxxxxxxx>


---
  drivers/virtio/virtio_ring.c | 18 +++++++++++++-----
  1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index cb6010750a94..33fddfb907a6 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -2301,14 +2301,10 @@ struct virtqueue *vring_new_virtqueue(unsigned int index,
  }
  EXPORT_SYMBOL_GPL(vring_new_virtqueue);
-void vring_del_virtqueue(struct virtqueue *_vq)
+static void vring_free(struct virtqueue *_vq)
  {
  	struct vring_virtqueue *vq = to_vvq(_vq);
- spin_lock(&vq->vq.vdev->vqs_list_lock);
-	list_del(&_vq->list);
-	spin_unlock(&vq->vq.vdev->vqs_list_lock);
-
  	if (vq->we_own_ring) {
  		if (vq->packed_ring) {
  			vring_free_queue(vq->vq.vdev,
@@ -2339,6 +2335,18 @@ void vring_del_virtqueue(struct virtqueue *_vq)
  		kfree(vq->split.desc_state);
  		kfree(vq->split.desc_extra);
  	}
+}
+
+void vring_del_virtqueue(struct virtqueue *_vq)
+{
+	struct vring_virtqueue *vq = to_vvq(_vq);
+
+	spin_lock(&vq->vq.vdev->vqs_list_lock);
+	list_del(&_vq->list);
+	spin_unlock(&vq->vq.vdev->vqs_list_lock);
+
+	vring_free(_vq);
+
  	kfree(vq);
  }
  EXPORT_SYMBOL_GPL(vring_del_virtqueue);




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