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-rw-r--r--include/block/block.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/block/block.h b/include/block/block.h
index 6a39f946f5..3a731377db 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -372,6 +372,7 @@ int bdrv_flush(BlockDriverState *bs);
int coroutine_fn bdrv_co_flush(BlockDriverState *bs);
void bdrv_close_all(void);
void bdrv_drain(BlockDriverState *bs);
+void coroutine_fn bdrv_co_drain(BlockDriverState *bs);
void bdrv_drain_all(void);
int bdrv_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors);