The existing comment for mdev_us says "medium deviation", but this term is inaccurate. The field stores the "mean deviation" of RTT, as originally defined in Van Jacobson's paper "Congestion Avoidance and Control", and it is scaled by 4 (<< 2) in the Linux implementation. Update the comment to reflect the correct terminology and storage format. Signed-off-by: Ziran Zhang <zhangcoder@yeah.net> Reviewed-by: Fernando Fernandez Mancera <fmancera@suse.de> Link: https://patch.msgid.link/20260805131927.27661-1-zhangcoder@yeah.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>