Merge branch 'tcp-user_mss-and-tcp_maxseg-series'

Eric Dumazet says:

====================
tcp: user_mss and TCP_MAXSEG series

Annotate data-races around tp->rx_opt.user_mss and make
TCP_MAXSEG lockless.
====================

Link: https://patch.msgid.link/20250821141901.18839-1-edumazet@google.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>