netdev - Re: [PATCH v9 04/32] virtio_ring: remove the arg vq of vring_alloc_desc

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Date:   Tue, 12 Apr 2022 10:53:22 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
        virtualization@...ts.linux-foundation.org
Cc:     Jeff Dike <jdike@...toit.com>, Richard Weinberger <richard@....at>,
        Anton Ivanov <anton.ivanov@...bridgegreys.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>,
        Vadim Pasternak <vadimp@...dia.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Cornelia Huck <cohuck@...hat.com>,
        Halil Pasic <pasic@...ux.ibm.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Sven Schnelle <svens@...ux.ibm.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        Johannes Berg <johannes.berg@...el.com>,
        Vincent Whitchurch <vincent.whitchurch@...s.com>,
        linux-um@...ts.infradead.org, netdev@...r.kernel.org,
        platform-driver-x86@...r.kernel.org,
        linux-remoteproc@...r.kernel.org, linux-s390@...r.kernel.org,
        kvm@...r.kernel.org, bpf@...r.kernel.org
Subject: Re: [PATCH v9 04/32] virtio_ring: remove the arg vq of
 vring_alloc_desc_extra()


在 2022/4/6 上午11:43, Xuan Zhuo 写道:
> The parameter vq of vring_alloc_desc_extra() is useless. This patch
> removes this parameter.
>
> Subsequent patches will call this function to avoid passing useless
> arguments.
>
> Signed-off-by: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>


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


> ---
>   drivers/virtio/virtio_ring.c | 7 +++----
>   1 file changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
> index f1807f6b06a5..cb6010750a94 100644
> --- a/drivers/virtio/virtio_ring.c
> +++ b/drivers/virtio/virtio_ring.c
> @@ -1636,8 +1636,7 @@ static void *virtqueue_detach_unused_buf_packed(struct virtqueue *_vq)
>   	return NULL;
>   }
>   
> -static struct vring_desc_extra *vring_alloc_desc_extra(struct vring_virtqueue *vq,
> -						       unsigned int num)
> +static struct vring_desc_extra *vring_alloc_desc_extra(unsigned int num)
>   {
>   	struct vring_desc_extra *desc_extra;
>   	unsigned int i;
> @@ -1755,7 +1754,7 @@ static struct virtqueue *vring_create_virtqueue_packed(
>   	/* Put everything in free lists. */
>   	vq->free_head = 0;
>   
> -	vq->packed.desc_extra = vring_alloc_desc_extra(vq, num);
> +	vq->packed.desc_extra = vring_alloc_desc_extra(num);
>   	if (!vq->packed.desc_extra)
>   		goto err_desc_extra;
>   
> @@ -2233,7 +2232,7 @@ struct virtqueue *__vring_new_virtqueue(unsigned int index,
>   	if (!vq->split.desc_state)
>   		goto err_state;
>   
> -	vq->split.desc_extra = vring_alloc_desc_extra(vq, vring.num);
> +	vq->split.desc_extra = vring_alloc_desc_extra(vring.num);
>   	if (!vq->split.desc_extra)
>   		goto err_extra;
>