[PATCH 4.19 31/74] virtio_net: Use xdp_return_frame to free xdp_frames on destroying vqs

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Toshiaki Makita <makita.toshi...@lab.ntt.co.jp>

[ Upstream commit 07b344f494ddda9f061b396407c96df8c46c82b5 ]

put_page() can work as a fallback for freeing xdp_frames, but the
appropriate way is to use xdp_return_frame().

Fixes: cac320c850ef ("virtio_net: convert to use generic xdp_frame and 
xdp_return_frame API")
Signed-off-by: Toshiaki Makita <makita.toshi...@lab.ntt.co.jp>
Acked-by: Jason Wang <jasow...@redhat.com>
Acked-by: Jesper Dangaard Brouer <bro...@redhat.com>
Acked-by: Michael S. Tsirkin <m...@redhat.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/net/virtio_net.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -2593,7 +2593,7 @@ static void free_unused_bufs(struct virt
                        if (!is_xdp_raw_buffer_queue(vi, i))
                                dev_kfree_skb(buf);
                        else
-                               put_page(virt_to_head_page(buf));
+                               xdp_return_frame(buf);
                }
        }