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virtio_ring: code cleanup in detach_buf_split

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Since the return value of vring_unmap_one_split() is exactly
vq->split.desc_extra[i].next, 'i = vq->split.desc_extra[i].next' is
redundant. Assign vring_unmap_one_split() to i instead.

Since vq->split.desc_extra is assigned to extra, use extra[i].next
instead of vq->split.desc_extra[i].next to improve readability.

No change in functionality.

Signed-off-by: zhangdongchuan <zhangdongchuan@eswincomputing.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <202511261140162936986@eswincomputing.com>
This commit is contained in:
zhangdongchuan@eswincomputing.com
2025-11-26 11:40:16 +08:00
committed by Michael S. Tsirkin
parent 3c4629b68d
commit 4b7bf8d550
1 changed files with 2 additions and 3 deletions
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5
drivers/virtio/virtio_ring.c
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@@ -764,13 +764,12 @@ static void detach_buf_split(struct vring_virtqueue *vq, unsigned int head,
i = head;
while (vq->split.vring.desc[i].flags & nextflag) {
vring_unmap_one_split(vq, &extra[i]);
i = vq->split.desc_extra[i].next;
i = vring_unmap_one_split(vq, &extra[i]);
vq->vq.num_free++;
}
vring_unmap_one_split(vq, &extra[i]);
vq->split.desc_extra[i].next = vq->free_head;
extra[i].next = vq->free_head;
vq->free_head = head;
/* Plus final descriptor */