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Message-ID: <20230310090504.joeyn4l65pcd3anh@sgarzare-redhat>
Date: Fri, 10 Mar 2023 10:05:04 +0100
From: Stefano Garzarella <sgarzare@...hat.com>
To: Arseniy Krasnov <avkrasnov@...rdevices.ru>
Cc: Stefan Hajnoczi <stefanha@...hat.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Bobby Eshleman <bobby.eshleman@...edance.com>,
kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
kernel@...rdevices.ru, oxffffaa@...il.com
Subject: Re: [RFC PATCH v4 2/4] virtio/vsock: remove redundant 'skb_pull()'
call
On Thu, Mar 09, 2023 at 11:27:02PM +0300, Arseniy Krasnov wrote:
>Since we now no longer use 'skb->len' to update credit, there is no sense
>to update skbuff state, because it is used only once after dequeue to
>copy data and then will be released.
>
>Fixes: 71dc9ec9ac7d ("virtio/vsock: replace virtio_vsock_pkt with sk_buff")
>Signed-off-by: Arseniy Krasnov <AVKrasnov@...rdevices.ru>
>---
> net/vmw_vsock/virtio_transport_common.c | 1 -
> 1 file changed, 1 deletion(-)
Reviewed-by: Stefano Garzarella <sgarzare@...hat.com>
>
>diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c
>index 618680fd9906..9a411475e201 100644
>--- a/net/vmw_vsock/virtio_transport_common.c
>+++ b/net/vmw_vsock/virtio_transport_common.c
>@@ -465,7 +465,6 @@ static int virtio_transport_seqpacket_do_dequeue(struct vsock_sock *vsk,
> dequeued_len = err;
> } else {
> user_buf_len -= bytes_to_copy;
>- skb_pull(skb, bytes_to_copy);
> }
>
> spin_lock_bh(&vvs->rx_lock);
>--
>2.25.1
>
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