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-rw-r--r--block_int.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/block_int.h b/block_int.h
index 137000e140..7f1a514063 100644
--- a/block_int.h
+++ b/block_int.h
@@ -145,6 +145,6 @@ void *qemu_aio_get(BlockDriverState *bs, BlockDriverCompletionFunc *cb,
void *opaque);
void qemu_aio_release(void *p);
-BlockDriverState *bdrv_first;
+extern BlockDriverState *bdrv_first;
#endif /* BLOCK_INT_H */