From: Alberto Faria <afaria@redhat.com>

The functions are marked coroutine_fn in the definition.

Signed-off-by: Alberto Faria <afaria@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 include/block/block-io.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/include/block/block-io.h b/include/block/block-io.h
index 492f95fc05..770ddeb7c8 100644
--- a/include/block/block-io.h
+++ b/include/block/block-io.h
@@ -83,12 +83,13 @@ void bdrv_aio_cancel(BlockAIOCB *acb);
 void bdrv_aio_cancel_async(BlockAIOCB *acb);
 
 /* sg packet commands */
-int bdrv_co_ioctl(BlockDriverState *bs, int req, void *buf);
+int coroutine_fn bdrv_co_ioctl(BlockDriverState *bs, int req, void *buf);
 
 /* Ensure contents are flushed to disk.  */
 int coroutine_fn bdrv_co_flush(BlockDriverState *bs);
 
-int bdrv_co_pdiscard(BdrvChild *child, int64_t offset, int64_t bytes);
+int coroutine_fn bdrv_co_pdiscard(BdrvChild *child, int64_t offset,
+                                  int64_t bytes);
 bool bdrv_can_write_zeroes_with_unmap(BlockDriverState *bs);
 int bdrv_block_status(BlockDriverState *bs, int64_t offset,
                       int64_t bytes, int64_t *pnum, int64_t *map,
-- 
2.37.3