From: "Paul E. McKenney" <paulmck@linux•ibm.com>
To: "Joel Fernandes (Google)" <joel@joelfernandes•org>
Cc: linux-kernel@vger•kernel.org,
Alexey Kuznetsov <kuznet@ms2•inr.ac.ru>,
Bjorn Helgaas <bhelgaas@google•com>,
Borislav Petkov <bp@alien8•de>,
c0d1n61at3@gmail•com, "David S. Miller" <davem@davemloft•net>,
edumazet@google•com,
Greg Kroah-Hartman <gregkh@linuxfoundation•org>,
Hideaki YOSHIFUJI <yoshfuji@linux-ipv6•org>,
"H. Peter Anvin" <hpa@zytor•com>, Ingo Molnar <mingo@redhat•com>,
Jonathan Corbet <corbet@lwn•net>,
Josh Triplett <josh@joshtriplett•org>,
keescook@chromium•org, kernel-hardening@lists•openwall.com,
kernel-team@android•com, Lai Jiangshan <jiangshanlai@gmail•com>,
Len Brown <lenb@kernel•org>,
linux-acpi@vger•kernel.org, linux-doc@vger•kernel.org,
linux-pci@vger•kernel.org, linux-pm@vger•kernel.org,
Mathieu Desnoyers <mathieu.desnoyers@efficios•com>,
neilb@suse•com, netdev@vger•kernel.org,
Oleg Nesterov <oleg@redhat•com>, Pavel Machek <pavel@ucw•cz>,
peterz@infradead•org, "Rafael J. Wysocki" <rjw@rjwysocki•net>,
Rasmus Villemoes <rasmus.villemoes@prevas•dk>,
rcu@vger•kernel.org, Steven Rostedt <rostedt@goodmis•org>,
Tejun Heo <tj@kernel•org>, Thomas Gleixner <tglx@linutronix•de>,
will@kernel•org,
"maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)"
<x86@kernel•org>
Subject: Re: [PATCH 4/9] ipv4: add lockdep condition to fix for_each_entry (v1)
Date: Tue, 16 Jul 2019 11:39:55 -0700 [thread overview]
Message-ID: <20190716183955.GF14271@linux.ibm.com> (raw)
In-Reply-To: <20190715143705.117908-5-joel@joelfernandes.org>
On Mon, Jul 15, 2019 at 10:37:00AM -0400, Joel Fernandes (Google) wrote:
> Using the previous support added, use it for adding lockdep conditions
> to list usage here.
>
> Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes•org>
We need an ack or better from the subsystem maintainer for this one.
Thanx, Paul
> ---
> net/ipv4/fib_frontend.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
> index 317339cd7f03..26b0fb24e2c2 100644
> --- a/net/ipv4/fib_frontend.c
> +++ b/net/ipv4/fib_frontend.c
> @@ -124,7 +124,8 @@ struct fib_table *fib_get_table(struct net *net, u32 id)
> h = id & (FIB_TABLE_HASHSZ - 1);
>
> head = &net->ipv4.fib_table_hash[h];
> - hlist_for_each_entry_rcu(tb, head, tb_hlist) {
> + hlist_for_each_entry_rcu(tb, head, tb_hlist,
> + lockdep_rtnl_is_held()) {
> if (tb->tb_id == id)
> return tb;
> }
> --
> 2.22.0.510.g264f2c817a-goog
>
next prev parent reply other threads:[~2019-07-16 18:42 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-15 14:36 [PATCH 0/9] Harden list_for_each_entry_rcu() and family Joel Fernandes (Google)
2019-07-15 14:36 ` [PATCH 1/9] rcu/update: Remove useless check for debug_locks (v1) Joel Fernandes (Google)
2019-07-15 14:36 ` [PATCH 2/9] rcu: Add support for consolidated-RCU reader checking (v3) Joel Fernandes (Google)
2019-07-16 18:38 ` Paul E. McKenney
2019-07-16 18:46 ` Joel Fernandes
2019-07-16 18:53 ` Paul E. McKenney
2019-07-16 22:02 ` Joel Fernandes
2019-07-17 0:07 ` Paul E. McKenney
2019-07-15 14:36 ` [PATCH 3/9] rcu/sync: Remove custom check for reader-section (v2) Joel Fernandes (Google)
2019-07-16 18:39 ` Paul E. McKenney
2019-07-15 14:37 ` [PATCH 4/9] ipv4: add lockdep condition to fix for_each_entry (v1) Joel Fernandes (Google)
2019-07-16 18:39 ` Paul E. McKenney [this message]
2019-07-16 21:12 ` David Miller
2019-07-15 14:37 ` [PATCH 5/9] driver/core: Convert to use built-in RCU list checking (v1) Joel Fernandes (Google)
2019-07-16 18:40 ` Paul E. McKenney
2019-07-15 14:37 ` [PATCH 6/9] workqueue: Convert for_each_wq to use built-in list check (v2) Joel Fernandes (Google)
2019-07-16 18:41 ` Paul E. McKenney
2019-07-15 14:37 ` [PATCH 7/9] x86/pci: Pass lockdep condition to pcm_mmcfg_list iterator (v1) Joel Fernandes (Google)
2019-07-15 20:02 ` Bjorn Helgaas
2019-07-16 4:03 ` Joel Fernandes
2019-07-16 18:42 ` Paul E. McKenney
2019-07-15 14:37 ` [PATCH 8/9] acpi: Use built-in RCU list checking for acpi_ioremaps list (v1) Joel Fernandes (Google)
2019-07-15 21:44 ` Rafael J. Wysocki
2019-07-16 18:43 ` Paul E. McKenney
2019-07-15 14:37 ` [PATCH 9/9] doc: Update documentation about list_for_each_entry_rcu (v1) Joel Fernandes (Google)
2019-07-16 18:46 ` [PATCH 0/9] Harden list_for_each_entry_rcu() and family Paul E. McKenney
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