block: Propagate AioContext change to parents

All block nodes and users in any connected component of the block graph
must be in the same AioContext, so changing the AioContext of one node
must not only change all of its children, but all of its parents (and
in turn their children etc.) as well.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/block/block_int.h b/include/block/block_int.h
index aa2c638b02..1eebc7c8f3 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -694,6 +694,7 @@ struct BdrvChildRole {
 
     bool (*can_set_aio_ctx)(BdrvChild *child, AioContext *ctx,
                             GSList **ignore, Error **errp);
+    void (*set_aio_ctx)(BdrvChild *child, AioContext *ctx, GSList **ignore);
 };
 
 extern const BdrvChildRole child_file;