diff --git a/block/export/vhost-user-blk-server.c b/block/export/vhost-user-blk-server.c
index e56b92f..841acb3 100644
--- a/block/export/vhost-user-blk-server.c
+++ b/block/export/vhost-user-blk-server.c
@@ -50,7 +50,10 @@
     free(req);
 }
 
-/* Called with server refcount increased, must decrease before returning */
+/*
+ * Called with server in_flight counter increased, must decrease before
+ * returning.
+ */
 static void coroutine_fn vu_blk_virtio_process_req(void *opaque)
 {
     VuBlkReq *req = opaque;
@@ -68,12 +71,12 @@
                                     in_num, out_num);
     if (in_len < 0) {
         free(req);
-        vhost_user_server_unref(server);
+        vhost_user_server_dec_in_flight(server);
         return;
     }
 
     vu_blk_req_complete(req, in_len);
-    vhost_user_server_unref(server);
+    vhost_user_server_dec_in_flight(server);
 }
 
 static void vu_blk_process_vq(VuDev *vu_dev, int idx)
@@ -95,7 +98,7 @@
         Coroutine *co =
             qemu_coroutine_create(vu_blk_virtio_process_req, req);
 
-        vhost_user_server_ref(server);
+        vhost_user_server_inc_in_flight(server);
         qemu_coroutine_enter(co);
     }
 }
diff --git a/include/qemu/vhost-user-server.h b/include/qemu/vhost-user-server.h
index 25c7243..bc0ac9d 100644
--- a/include/qemu/vhost-user-server.h
+++ b/include/qemu/vhost-user-server.h
@@ -41,7 +41,7 @@
     const VuDevIface *vu_iface;
 
     /* Protected by ctx lock */
-    unsigned int refcount;
+    unsigned int in_flight;
     bool wait_idle;
     VuDev vu_dev;
     QIOChannel *ioc; /* The I/O channel with the client */
@@ -60,8 +60,8 @@
 
 void vhost_user_server_stop(VuServer *server);
 
-void vhost_user_server_ref(VuServer *server);
-void vhost_user_server_unref(VuServer *server);
+void vhost_user_server_inc_in_flight(VuServer *server);
+void vhost_user_server_dec_in_flight(VuServer *server);
 
 void vhost_user_server_attach_aio_context(VuServer *server, AioContext *ctx);
 void vhost_user_server_detach_aio_context(VuServer *server);
diff --git a/util/vhost-user-server.c b/util/vhost-user-server.c
index 5b62160..1622f8c 100644
--- a/util/vhost-user-server.c
+++ b/util/vhost-user-server.c
@@ -75,16 +75,16 @@
     error_report("vu_panic: %s", buf);
 }
 
-void vhost_user_server_ref(VuServer *server)
+void vhost_user_server_inc_in_flight(VuServer *server)
 {
     assert(!server->wait_idle);
-    server->refcount++;
+    server->in_flight++;
 }
 
-void vhost_user_server_unref(VuServer *server)
+void vhost_user_server_dec_in_flight(VuServer *server)
 {
-    server->refcount--;
-    if (server->wait_idle && !server->refcount) {
+    server->in_flight--;
+    if (server->wait_idle && !server->in_flight) {
         aio_co_wake(server->co_trip);
     }
 }
@@ -192,13 +192,13 @@
         /* Keep running */
     }
 
-    if (server->refcount) {
+    if (server->in_flight) {
         /* Wait for requests to complete before we can unmap the memory */
         server->wait_idle = true;
         qemu_coroutine_yield();
         server->wait_idle = false;
     }
-    assert(server->refcount == 0);
+    assert(server->in_flight == 0);
 
     vu_deinit(vu_dev);