1 files changed, 12 insertions, 0 deletions
diff --git a/block/io.c b/block/io.c
index 6fc0145864..be0d862ca6 100644
--- a/block/io.c
+++ b/block/io.c
@@ -474,9 +474,21 @@ void bdrv_inc_in_flight(BlockDriverState *bs)
     atomic_inc(&bs->in_flight);
 }
 
+static void dummy_bh_cb(void *opaque)
+{
+}
+
+void bdrv_wakeup(BlockDriverState *bs)
+{
+    if (bs->wakeup) {
+        aio_bh_schedule_oneshot(qemu_get_aio_context(), dummy_bh_cb, NULL);
+    }
+}
+
 void bdrv_dec_in_flight(BlockDriverState *bs)
 {
     atomic_dec(&bs->in_flight);
+    bdrv_wakeup(bs);
 }
 
 static bool coroutine_fn wait_serialising_requests(BdrvTrackedRequest *self)