diff --git a/block/mirror.c b/block/mirror.c
index 628f9e6a0b..ab59ad77e8 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -277,7 +277,8 @@ static int mirror_cow_align(MirrorBlockJob *s, int64_t *offset,
     return ret;
 }
 
-static inline void mirror_wait_for_any_operation(MirrorBlockJob *s, bool active)
+static inline void coroutine_fn
+mirror_wait_for_any_operation(MirrorBlockJob *s, bool active)
 {
     MirrorOp *op;
 
@@ -295,7 +296,8 @@ static inline void mirror_wait_for_any_operation(MirrorBlockJob *s, bool active)
     abort();
 }
 
-static inline void mirror_wait_for_free_in_flight_slot(MirrorBlockJob *s)
+static inline void coroutine_fn
+mirror_wait_for_free_in_flight_slot(MirrorBlockJob *s)
 {
     /* Only non-active operations use up in-flight slots */
     mirror_wait_for_any_operation(s, false);
@@ -598,7 +600,7 @@ static void mirror_free_init(MirrorBlockJob *s)
  * mirror_resume() because mirror_run() will begin iterating again
  * when the job is resumed.
  */
-static void mirror_wait_for_all_io(MirrorBlockJob *s)
+static void coroutine_fn mirror_wait_for_all_io(MirrorBlockJob *s)
 {
     while (s->in_flight > 0) {
         mirror_wait_for_free_in_flight_slot(s);
@@ -732,7 +734,7 @@ static void mirror_abort(Job *job)
     assert(ret == 0);
 }
 
-static void mirror_throttle(MirrorBlockJob *s)
+static void coroutine_fn mirror_throttle(MirrorBlockJob *s)
 {
     int64_t now = qemu_clock_get_ns(QEMU_CLOCK_REALTIME);
 
@@ -1107,7 +1109,7 @@ static void mirror_complete(Job *job, Error **errp)
     job_enter(job);
 }
 
-static void mirror_pause(Job *job)
+static void coroutine_fn mirror_pause(Job *job)
 {
     MirrorBlockJob *s = container_of(job, MirrorBlockJob, common.job);
 
@@ -1178,9 +1180,10 @@ static const BlockJobDriver commit_active_job_driver = {
     .drain                  = mirror_drain,
 };
 
-static void do_sync_target_write(MirrorBlockJob *job, MirrorMethod method,
-                                 uint64_t offset, uint64_t bytes,
-                                 QEMUIOVector *qiov, int flags)
+static void coroutine_fn
+do_sync_target_write(MirrorBlockJob *job, MirrorMethod method,
+                     uint64_t offset, uint64_t bytes,
+                     QEMUIOVector *qiov, int flags)
 {
     BdrvDirtyBitmapIter *iter;
     QEMUIOVector target_qiov;