The spurious wakeup is gone.

Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
---
 migration/ram.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/migration/ram.c b/migration/ram.c
index fccdbfabc5..73ace40b1b 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -1168,8 +1168,8 @@ static void *multifd_send_thread(void *opaque)
             qemu_mutex_unlock(&p->mutex);
             break;
         } else {
-            qemu_mutex_unlock(&p->mutex);
-            /* sometimes there are spurious wakeups */
+            /* no other case should trigger me */
+            g_assert_not_reached();
         }
     }
 
-- 
2.17.1