diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c
index db1782ec1f..93744b3565 100644
--- a/block/dirty-bitmap.c
+++ b/block/dirty-bitmap.c
@@ -241,6 +241,12 @@ int bdrv_dirty_bitmap_create_successor(BlockDriverState *bs,
     return 0;
 }
 
+void bdrv_enable_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap)
+{
+    assert(!bdrv_dirty_bitmap_frozen(bitmap));
+    bitmap->disabled = false;
+}
+
 /* Called with BQL taken. */
 void bdrv_dirty_bitmap_enable_successor(BdrvDirtyBitmap *bitmap)
 {
@@ -424,8 +430,7 @@ void bdrv_disable_dirty_bitmap(BdrvDirtyBitmap *bitmap)
 void bdrv_enable_dirty_bitmap(BdrvDirtyBitmap *bitmap)
 {
     bdrv_dirty_bitmap_lock(bitmap);
-    assert(!bdrv_dirty_bitmap_frozen(bitmap));
-    bitmap->disabled = false;
+    bdrv_enable_dirty_bitmap_locked(bitmap);
     bdrv_dirty_bitmap_unlock(bitmap);
 }
 
diff --git a/include/block/dirty-bitmap.h b/include/block/dirty-bitmap.h
index 288dc6adb6..259bd27c40 100644
--- a/include/block/dirty-bitmap.h
+++ b/include/block/dirty-bitmap.h
@@ -32,6 +32,7 @@ void bdrv_remove_persistent_dirty_bitmap(BlockDriverState *bs,
                                          Error **errp);
 void bdrv_disable_dirty_bitmap(BdrvDirtyBitmap *bitmap);
 void bdrv_enable_dirty_bitmap(BdrvDirtyBitmap *bitmap);
+void bdrv_enable_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap);
 BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs);
 uint32_t bdrv_get_default_bitmap_granularity(BlockDriverState *bs);
 uint32_t bdrv_dirty_bitmap_granularity(const BdrvDirtyBitmap *bitmap);