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-rw-r--r--block/io.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/block/io.c b/block/io.c
index 209a6da0c8..e7f9448d5a 100644
--- a/block/io.c
+++ b/block/io.c
@@ -387,7 +387,8 @@ void bdrv_do_drained_begin_quiesce(BlockDriverState *bs, BdrvChild *parent)
     bdrv_do_drained_begin(bs, parent, false);
 }
 
-void bdrv_drained_begin(BlockDriverState *bs)
+void coroutine_mixed_fn
+bdrv_drained_begin(BlockDriverState *bs)
 {
     IO_OR_GS_CODE();
     bdrv_do_drained_begin(bs, NULL, true);
@@ -506,7 +507,7 @@ void bdrv_drain_all_begin_nopoll(void)
     }
 }
 
-void bdrv_drain_all_begin(void)
+void coroutine_mixed_fn bdrv_drain_all_begin(void)
 {
     BlockDriverState *bs = NULL;