netdev - Re: [PATCH RESEND v2 net-next 07/14] ipv6: Preallocate rt->fib6_nh->rt6i_pcpu in ip6_route_info

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Message-ID: <917877cc-414f-48c5-a9b3-0cda1fca09da@redhat.com>
Date: Wed, 16 Apr 2025 11:23:32 +0200
From: Paolo Abeni <pabeni@...hat.com>
To: Kuniyuki Iwashima <kuniyu@...zon.com>,
 "David S. Miller" <davem@...emloft.net>, David Ahern <dsahern@...nel.org>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>
Cc: Simon Horman <horms@...nel.org>, Kuniyuki Iwashima <kuni1840@...il.com>,
 netdev@...r.kernel.org
Subject: Re: [PATCH RESEND v2 net-next 07/14] ipv6: Preallocate
 rt->fib6_nh->rt6i_pcpu in ip6_route_info_create().

On 4/14/25 8:14 PM, Kuniyuki Iwashima wrote:
> ip6_route_info_create_nh() will be called under RCU.
> 
> Then, fib6_nh_init() is also under RCU, but per-cpu memory allocation
> is very likely to fail with GFP_ATOMIC while bluk-adding IPv6 routes

oops, I forgot a very minor nit:               ^^^^ bulk

/P