From: Stephen Rothwell <sfr@canb.auug.org.au>
To: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
Cc: "Paul E . McKenney" <paulmck@kernel.org>,
Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
Joel Fernandes <joel@joelfernandes.org>,
kuba@kernel.org, linux-kernel-mentees@lists.linuxfoundation.org,
"David S . Miller" <davem@davemloft.net>
Subject: Re: [Linux-kernel-mentees] [PATCH net 2/2 RESEND] ipmr: Add lockdep expression to ipmr_for_each_table macro
Date: Wed, 13 May 2020 21:54:41 +1000 [thread overview]
Message-ID: <20200513215441.22653800@canb.auug.org.au> (raw)
In-Reply-To: <20200512051705.GB9585@madhuparna-HP-Notebook>
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Hi all,
On Tue, 12 May 2020 10:47:05 +0530 Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com> wrote:
> >
> > I think what is happening is this:
> >
> > ipmr_net_init() -> ipmr_rules_init() -> ipmr_new_table()
> >
> > ipmr_new_table() returns an existing table if there is one, but
> > obviously none can exist at init. So a better fix would be:
> >
> > #define ipmr_for_each_table(mrt, net) \
> > list_for_each_entry_rcu(mrt, &net->ipv4.mr_tables, list, \
> > lockdep_rtnl_is_held() || \
> > list_empty(&net->ipv4.mr_tables))
> >
> (adding Stephen)
I have changed the patch in my fixes tree to this.
--
Cheers,
Stephen Rothwell
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prev parent reply other threads:[~2020-05-13 11:54 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-09 7:22 [Linux-kernel-mentees] [PATCH net 1/2 RESEND] ipmr: Fix RCU list debugging warning Amol Grover
2020-05-09 7:22 ` [Linux-kernel-mentees] [PATCH net 2/2 RESEND] ipmr: Add lockdep expression to ipmr_for_each_table macro Amol Grover
2020-05-09 21:19 ` Jakub Kicinski
2020-05-12 5:17 ` Madhuparna Bhowmik
2020-05-12 16:32 ` Jakub Kicinski
2020-05-13 5:34 ` Madhuparna Bhowmik
2020-05-12 17:17 ` Amol Grover
2020-05-12 21:59 ` Jakub Kicinski
2020-05-13 11:54 ` Stephen Rothwell [this message]
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