Re: [PATCH 4/9] ipv4: add lockdep condition to fix for_each_entry (v1)

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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@xxxxxxxxxxxxxxxxx>

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
> 



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