virtio-net: pass gfp to add_buf

virtio-net bounces buffer allocations off to
a thread if it can't allocate buffers from the atomic
pool. However, if posting buffers still requires atomic
buffers, this is unlikely to succeed.
Fix by passing in the proper gfp_t parameter.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 78eb319..1edb7a6 100644 (file)
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -340,7 +340,7 @@ static int add_recvbuf_small(struct virtnet_info *vi, gfp_t gfp)
 
        skb_to_sgvec(skb, vi->rx_sg + 1, 0, skb->len);
 
-       err = virtqueue_add_buf(vi->rvq, vi->rx_sg, 0, 2, skb);
+       err = virtqueue_add_buf_gfp(vi->rvq, vi->rx_sg, 0, 2, skb, gfp);
        if (err < 0)
                dev_kfree_skb(skb);
 
@@ -385,8 +385,8 @@ static int add_recvbuf_big(struct virtnet_info *vi, gfp_t gfp)
 
        /* chain first in list head */
        first->private = (unsigned long)list;
-       err = virtqueue_add_buf(vi->rvq, vi->rx_sg, 0, MAX_SKB_FRAGS + 2,
-                                      first);
+       err = virtqueue_add_buf_gfp(vi->rvq, vi->rx_sg, 0, MAX_SKB_FRAGS + 2,
+                                   first, gfp);
        if (err < 0)
                give_pages(vi, first);
 
@@ -404,7 +404,7 @@ static int add_recvbuf_mergeable(struct virtnet_info *vi, gfp_t gfp)
 
        sg_init_one(vi->rx_sg, page_address(page), PAGE_SIZE);
 
-       err = virtqueue_add_buf(vi->rvq, vi->rx_sg, 0, 1, page);
+       err = virtqueue_add_buf_gfp(vi->rvq, vi->rx_sg, 0, 1, page, gfp);
        if (err < 0)
                give_pages(vi, page);