write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/net/dccp/output.c
..
..
@@ -185,7 +185,7 @@
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 	/* And store cached results */
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 	icsk->icsk_pmtu_cookie = pmtu;
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-	dp->dccps_mss_cache = cur_mps;
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+	WRITE_ONCE(dp->dccps_mss_cache, cur_mps);
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 	return cur_mps;
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 }