virtio-scsi: Make virtio_scsi_acquire/release public

They will be used in virtio-scsi-dataplane.c as well, so move them to
header.
Signed-off-by: NFam Zheng <famz@redhat.com>
Message-Id: <20170317061447.16243-2-famz@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

hw/scsi/virtio-scsi.c

@@ -422,20 +422,6 @@ static void virtio_scsi_handle_ctrl_req(VirtIOSCSI *s, VirtIOSCSIReq *req)
     }
 }
 
-static inline void virtio_scsi_acquire(VirtIOSCSI *s)
-{
-    if (s->ctx) {
-        aio_context_acquire(s->ctx);
-    }
-}
-
-static inline void virtio_scsi_release(VirtIOSCSI *s)
-{
-    if (s->ctx) {
-        aio_context_release(s->ctx);
-    }
-}
-
 bool virtio_scsi_handle_ctrl_vq(VirtIOSCSI *s, VirtQueue *vq)
 {
     VirtIOSCSIReq *req;

include/hw/virtio/virtio-scsi.h

@@ -121,6 +121,20 @@ typedef struct VirtIOSCSIReq {
     } req;
 } VirtIOSCSIReq;
 
+static inline void virtio_scsi_acquire(VirtIOSCSI *s)
+{
+    if (s->ctx) {
+        aio_context_acquire(s->ctx);
+    }
+}
+
+static inline void virtio_scsi_release(VirtIOSCSI *s)
+{
+    if (s->ctx) {
+        aio_context_release(s->ctx);
+    }
+}
+
 void virtio_scsi_common_realize(DeviceState *dev, Error **errp,
                                 VirtIOHandleOutput ctrl, VirtIOHandleOutput evt,
                                 VirtIOHandleOutput cmd);