virtio-blk: Convert VirtIOBlockReq.elem to pointer

This will make converging with dataplane code easier.

Add virtio_blk_free_request to handle the freeing of request internal
fields.

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/hw/virtio/virtio-blk.h b/include/hw/virtio/virtio-blk.h
index d05d177..b495e42 100644
--- a/include/hw/virtio/virtio-blk.h
+++ b/include/hw/virtio/virtio-blk.h
@@ -136,7 +136,7 @@ typedef struct VirtIOBlock {
 
 typedef struct VirtIOBlockReq {
     VirtIOBlock *dev;
-    VirtQueueElement elem;
+    VirtQueueElement *elem;
     struct virtio_blk_inhdr *in;
     struct virtio_blk_outhdr *out;
     QEMUIOVector qiov;