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Re: [PATCH v5 1/8] net: Remove the now superfluous sentinel elements fro

To: Joel Granados <j.granados@xxxxxxxxxxx>
Subject: Re: [PATCH v5 1/8] net: Remove the now superfluous sentinel elements from ctl_table array
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>, Eric Dumazet <edumazet@xxxxxxxxxx>, Jakub Kicinski <kuba@xxxxxxxxxx>, Paolo Abeni <pabeni@xxxxxxxxxx>, Alexander Aring <alex.aring@xxxxxxxxx>, Stefan Schmidt <stefan@xxxxxxxxxxxxxxxxxx>, Miquel Raynal <miquel.raynal@xxxxxxxxxxx>, David Ahern <dsahern@xxxxxxxxxx>, Steffen Klassert <steffen.klassert@xxxxxxxxxxx>, Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>, Matthieu Baerts <matttbe@xxxxxxxxxx>, Mat Martineau <martineau@xxxxxxxxxx>, Geliang Tang <geliang@xxxxxxxxxx>, Remi Denis-Courmont <courmisch@xxxxxxxxx>, Allison Henderson <allison.henderson@xxxxxxxxxx>, David Howells <dhowells@xxxxxxxxxx>, Marc Dionne <marc.dionne@xxxxxxxxxxxx>, Marcelo Ricardo Leitner <marcelo.leitner@xxxxxxxxx>, Xin Long <lucien.xin@xxxxxxxxx>, Wenjia Zhang <wenjia@xxxxxxxxxxxxx>, Jan Karcher <jaka@xxxxxxxxxxxxx>, "D. Wythe" <alibuda@xxxxxxxxxxxxxxxxx>, Tony Lu <tonylu@xxxxxxxxxxxxxxxxx>, Wen Gu <guwen@xxxxxxxxxxxxxxxxx>, Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>, Anna Schumaker <anna@xxxxxxxxxx>, Chuck Lever <chuck.lever@xxxxxxxxxx>, Jeff Layton <jlayton@xxxxxxxxxx>, Neil Brown <neilb@xxxxxxx>, Olga Kornievskaia <kolga@xxxxxxxxxx>, Dai Ngo <Dai.Ngo@xxxxxxxxxx>, Tom Talpey <tom@xxxxxxxxxx>, Jon Maloy <jmaloy@xxxxxxxxxx>, Ying Xue <ying.xue@xxxxxxxxxxxxx>, Martin Schiller <ms@xxxxxxxxxx>, Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>, Jozsef Kadlecsik <kadlec@xxxxxxxxxxxxx>, Florian Westphal <fw@xxxxxxxxx>, Roopa Prabhu <roopa@xxxxxxxxxx>, Nikolay Aleksandrov <razor@xxxxxxxxxxxxx>, Simon Horman <horms@xxxxxxxxxxxx>, Julian Anastasov <ja@xxxxxx>, Joerg Reuter <jreuter@xxxxxxxx>, Luis Chamberlain <mcgrof@xxxxxxxxxx>, Kees Cook <keescook@xxxxxxxxxxxx>, netdev@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, dccp@xxxxxxxxxxxxxxx, linux-wpan@xxxxxxxxxxxxxxx, mptcp@xxxxxxxxxxxxxxx, linux-hams@xxxxxxxxxxxxxxx, linux-rdma@xxxxxxxxxxxxxxx, rds-devel@xxxxxxxxxxxxxx, linux-afs@xxxxxxxxxxxxxxxxxxx, linux-sctp@xxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-nfs@xxxxxxxxxxxxxxx, tipc-discussion@xxxxxxxxxxxxxxxxxxxxx, linux-x25@xxxxxxxxxxxxxxx, netfilter-devel@xxxxxxxxxxxxxxx, coreteam@xxxxxxxxxxxxx, bridge@xxxxxxxxxxxxxxx, lvs-devel@xxxxxxxxxxxxxxx
From: Sabrina Dubroca <sd@xxxxxxxxxxxxxxx>
Date: Mon, 29 Apr 2024 16:49:18 +0200
2024-04-29, 14:33:15 +0200, Joel Granados wrote:
> On Mon, Apr 29, 2024 at 10:53:47AM +0200, Sabrina Dubroca wrote:
> > 2024-04-26, 12:46:53 +0200, Joel Granados via B4 Relay wrote:
> > > diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
> > > index 6973dda3abda..a84690b13bb9 100644
> > > --- a/net/core/sysctl_net_core.c
> > > +++ b/net/core/sysctl_net_core.c
> > [...]
> > > @@ -723,12 +722,11 @@ static __net_init int sysctl_core_net_init(struct 
> > > net *net)
> > >           if (tbl == NULL)
> > >                   goto err_dup;
> > >  
> > > -         for (tmp = tbl; tmp->procname; tmp++)
> > > -                 tmp->data += (char *)net - (char *)&init_net;
> > 
> > Some coding style nits in case you re-post:
> Thx. I will, so please scream if you see more issues.

I've gone through the whole series and didn't see anything more.

> > > +         for (int i = 0; i < table_size; ++i)
> > 
> > move the declaration of int i out of the for (), it's almost never
> > written this way (at least in networking)
> done
> 
> > 
> > > +                 (tbl + i)->data += (char *)net - (char *)&init_net;
> > 
> >                         tbl[i].data = ...
> > 
> > is more in line with other similar functions in the rest of net/
> done
> 
> > 
> > 
> > [...]
> > > diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c
> > > index 6dab883a08dd..ecc849678e7b 100644
> > > --- a/net/mpls/af_mpls.c
> > > +++ b/net/mpls/af_mpls.c
> > [...]
> > > @@ -2674,6 +2673,7 @@ static const struct ctl_table mpls_table[] = {
> > >  
> > >  static int mpls_net_init(struct net *net)
> > >  {
> > > + size_t table_size = ARRAY_SIZE(mpls_table);
> > 
> > This table still has a {} as its final element. It should be gone too?
> Now, how did that get away?  I'll run my coccinelle scripts once more to
> make sure that I don't have more of these hiding in the shadows.

I didn't spot any other with a dumb

    sed -n '<line>,^};/p' <file>

(with file/line produced by git grep 'struct ctl_table' -- net)


Thanks.

-- 
Sabrina



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