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-rw-r--r--blockdev.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/blockdev.c b/blockdev.c
index 040c152512..4927914ce3 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1772,6 +1772,8 @@ static void external_snapshot_prepare(BlkActionState *common,
         return;
     }
 
+    bdrv_set_aio_context(state->new_bs, state->aio_context);
+
     /* This removes our old bs and adds the new bs. This is an operation that
      * can fail, so we need to do it in .prepare; undoing it for abort is
      * always possible. */
@@ -1789,8 +1791,6 @@ static void external_snapshot_commit(BlkActionState *common)
     ExternalSnapshotState *state =
                              DO_UPCAST(ExternalSnapshotState, common, common);
 
-    bdrv_set_aio_context(state->new_bs, state->aio_context);
-
     /* We don't need (or want) to use the transactional
      * bdrv_reopen_multiple() across all the entries at once, because we
      * don't want to abort all of them if one of them fails the reopen */