linux-kernel - Re: [PATCH net-next 4/6] vhost/net: remove vhost_net_page_frag

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Date:   Thu, 7 Dec 2023 13:52:08 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     Yunsheng Lin <linyunsheng@...wei.com>
Cc:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>, kvm@...r.kernel.org,
        virtualization@...ts.linux.dev, bpf@...r.kernel.org
Subject: Re: [PATCH net-next 4/6] vhost/net: remove vhost_net_page_frag_refill()

On Tue, Dec 5, 2023 at 7:35 PM Yunsheng Lin <linyunsheng@...wei.com> wrote:
>
> The page frag in vhost_net_page_frag_refill() uses the
> 'struct page_frag' from skb_page_frag_refill(), but it's
> implementation is similar to page_frag_alloc_align() now.
>
> This patch removes vhost_net_page_frag_refill() by using
> 'struct page_frag_cache' instead of 'struct page_frag',
> and allocating frag using page_frag_alloc_align().
>
> The added benefit is that not only unifying the page frag
> implementation a little, but also having about 0.5% performance
> boost testing by using the vhost_net_test introduced in the
> last patch.
>
> Signed-off-by: Yunsheng Lin <linyunsheng@...wei.com>
> ---

Acked-by: Jason Wang <jasowang@...hat.com>

Thanks