netdev - Re: [PATCH v2] x25: remove the BKL

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Date:	Thu, 27 Jan 2011 14:20:47 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Andrew Hendry <andrew.hendry@...il.com>,
	linux-kernel@...r.kernel.org, linux-x25@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH v2] x25: remove the BKL

Le jeudi 27 janvier 2011 à 13:38 +0100, Arnd Bergmann a écrit :
> diff --git a/net/x25/x25_out.c b/net/x25/x25_out.c
> index d00649f..f1a6ff1 100644
> --- a/net/x25/x25_out.c
> +++ b/net/x25/x25_out.c
> @@ -68,8 +68,11 @@ int x25_output(struct sock *sk, struct sk_buff *skb)
>  		frontlen = skb_headroom(skb);
>  
>  		while (skb->len > 0) {
> -			if ((skbn = sock_alloc_send_skb(sk, frontlen + max_len,
> -							noblock, &err)) == NULL){
> +			release_sock(sk);
> +			skbn = sock_alloc_send_skb(sk, frontlen + max_len,
> +						   1, &err);
> +			lock_sock(sk);
> +			if (!skbn) {
>  				if (err == -EWOULDBLOCK && noblock){
>  					kfree_skb(skb);
>  					return sent;

This part looks strange :

noblock variable became "const 1 : NOBLOCK"

Why releasing socket if you dont block in sock_alloc_send_skb() ?



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