From 3464645a10f80ce39bc90c5494a3e92387947818 Mon Sep 17 00:00:00 2001 From: Mike Waychison Date: Wed, 4 Jan 2012 12:52:32 +0000 Subject: [PATCH] virtio_net: Pass gfp flags when allocating rx buffers. Currently, the refill path for RX buffers will always allocate the buffers as GFP_ATOMIC, even if we are in process context. This will fail to apply memory pressure as the worker thread will not contribute to the freeing of memory. Fix this by changing add_recvbuf_small to use the gfp variant allocator, __netdev_alloc_skb_ip_align(). Signed-off-by: Mike Waychison Acked-by: Rusty Russell Signed-off-by: David S. Miller --- drivers/net/virtio_net.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 2055386eda58..76fe14efb2b5 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -156,6 +156,7 @@ static void set_skb_frag(struct sk_buff *skb, struct page *page, *len -= size; } +/* Called from bottom half context */ static struct sk_buff *page_to_skb(struct virtnet_info *vi, struct page *page, unsigned int len) { @@ -358,7 +359,7 @@ static int add_recvbuf_small(struct virtnet_info *vi, gfp_t gfp) struct skb_vnet_hdr *hdr; int err; - skb = netdev_alloc_skb_ip_align(vi->dev, MAX_PACKET_LEN); + skb = __netdev_alloc_skb_ip_align(vi->dev, MAX_PACKET_LEN, gfp); if (unlikely(!skb)) return -ENOMEM;