netdev - Re: [PATCH net-next 4/4] udp: move udp_memory_allocated into net_aligned

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Message-ID: <686000fa42469_a131d2946c@willemb.c.googlers.com.notmuch>
Date: Sat, 28 Jun 2025 10:49:30 -0400
From: Willem de Bruijn <willemdebruijn.kernel@...il.com>
To: Eric Dumazet <edumazet@...gle.com>, 
 "David S . Miller" <davem@...emloft.net>, 
 Jakub Kicinski <kuba@...nel.org>, 
 Paolo Abeni <pabeni@...hat.com>
Cc: Simon Horman <horms@...nel.org>, 
 Willem de Bruijn <willemb@...gle.com>, 
 netdev@...r.kernel.org, 
 eric.dumazet@...il.com, 
 Eric Dumazet <edumazet@...gle.com>
Subject: Re: [PATCH net-next 4/4] udp: move udp_memory_allocated into
 net_aligned_data

Eric Dumazet wrote:
> ____cacheline_aligned_in_smp attribute only makes sure to align
> a field to a cache line. It does not prevent the linker to use
> the remaining of the cache line for other variables, causing
> potential false sharing.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Reviewed-by: Willem de Bruijn <willemb@...gle.com>