From: Stefano Garzarella <sgarzare@redhat.com>
To: Arseniy Krasnov <avkrasnov@sberdevices.ru>
Cc: Stefan Hajnoczi <stefanha@redhat.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Bobby Eshleman <bobby.eshleman@bytedance.com>,
kvm@vger.kernel.org, virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel@sberdevices.ru, oxffffaa@gmail.com
Subject: Re: [RFC PATCH v3 2/4] virtio/vsock: remove redundant 'skb_pull()' call
Date: Thu, 9 Mar 2023 17:29:35 +0100 [thread overview]
Message-ID: <20230309162935.c76hilqo3s22fysd@sgarzare-redhat> (raw)
In-Reply-To: <ea7a542b-8772-e204-6b2b-a60d89614f3b@sberdevices.ru>
On Thu, Mar 09, 2023 at 01:12:42PM +0300, Arseniy Krasnov wrote:
I would add:
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.
>
>Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru>
>---
> net/vmw_vsock/virtio_transport_common.c | 1 -
> 1 file changed, 1 deletion(-)
The patch LGTM!
Stefano
>
>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
>
next prev parent reply other threads:[~2023-03-09 16:41 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-09 10:10 [RFC PATCH v3 0/4] several updates to virtio/vsock Arseniy Krasnov
2023-03-09 10:11 ` [RFC PATCH v3 1/4] virtio/vsock: don't use skbuff state to account credit Arseniy Krasnov
2023-03-09 16:27 ` Stefano Garzarella
2023-03-09 10:12 ` [RFC PATCH v3 2/4] virtio/vsock: remove redundant 'skb_pull()' call Arseniy Krasnov
2023-03-09 16:29 ` Stefano Garzarella [this message]
2023-03-09 10:13 ` [RFC PATCH v3 3/4] virtio/vsock: don't drop skbuff on copy failure Arseniy Krasnov
2023-03-09 16:30 ` Stefano Garzarella
2023-03-09 10:14 ` [RFC PATCH v3 4/4] test/vsock: copy to user failure test Arseniy Krasnov
2023-03-09 16:30 ` Stefano Garzarella
2023-03-09 16:21 ` [RFC PATCH v3 0/4] several updates to virtio/vsock Stefano Garzarella
2023-03-09 16:20 ` Arseniy Krasnov
2023-03-09 16:32 ` Stefano Garzarella
2023-03-09 20:34 ` Arseniy Krasnov
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