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This adds GRAPH_RDLOCK annotations to declare that callers of bdrv_refresh_limits() need to hold a reader lock for the graph because it accesses the children list of a node. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20230504115750.54437-21-kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>