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virtio-net: fix pages leaking when building skb in big mode
[ Upstream commit afd92d8 ] We try to use build_skb() if we had sufficient tailroom. But we forget to release the unused pages chained via private in big mode which will leak pages. Fixing this by release the pages after building the skb in big mode. Cc: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Fixes: fb32856 ("virtio-net: page_to_skb() use build_skb when there's sufficient tailroom") Signed-off-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
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