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[Qemu-stable] [PATCH 3/6] virtio: decrement vq->inuse in virtqueue_disca
From: |
Ladi Prosek |
Subject: |
[Qemu-stable] [PATCH 3/6] virtio: decrement vq->inuse in virtqueue_discard() |
Date: |
Mon, 2 Jan 2017 12:58:42 +0100 |
From: Stefan Hajnoczi <address@hidden>
virtqueue_discard() moves vq->last_avail_idx back so the element can be
popped again. It's necessary to decrement vq->inuse to avoid "leaking"
the element count.
Cc: address@hidden
Signed-off-by: Stefan Hajnoczi <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
Reviewed-by: Cornelia Huck <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Michael S. Tsirkin <address@hidden>
(cherry picked from commit 58a83c61496eeb0d31571a07a51bc1947e3379ac)
Signed-off-by: Ladi Prosek <address@hidden>
---
hw/virtio.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/hw/virtio.c b/hw/virtio.c
index 3af7a18..eb527d0 100644
--- a/hw/virtio.c
+++ b/hw/virtio.c
@@ -261,6 +261,7 @@ void virtqueue_discard(VirtQueue *vq, const
VirtQueueElement *elem,
unsigned int len)
{
vq->last_avail_idx--;
+ vq->inuse--;
virtqueue_unmap_sg(vq, elem, len);
}
--
2.7.4
- [Qemu-stable] [PATCH 3/6] virtio: decrement vq->inuse in virtqueue_discard(),
Ladi Prosek <=