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virtio_ring: update the document of the virtqueue_detach_unused_buf for queue reset

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Added documentation for virtqueue_detach_unused_buf, allowing it to be
called on queue reset.

Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20220801063902.129329-4-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Xuan Zhuo 2022-08-01 14:38:23 +08:00 committed by Michael S. Tsirkin
parent 3086e9fc91
commit a62eecb3a9
1 changed files with 2 additions and 2 deletions
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4
drivers/virtio/virtio_ring.c
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@ -2130,8 +2130,8 @@ EXPORT_SYMBOL_GPL(virtqueue_enable_cb_delayed);
* @_vq: the struct virtqueue we're talking about.
*
* Returns NULL or the "data" token handed to virtqueue_add_*().
* This is not valid on an active queue; it is useful only for device
* shutdown.
* This is not valid on an active queue; it is useful for device
* shutdown or the reset queue.
*/
void *virtqueue_detach_unused_buf(struct virtqueue *_vq)
{