Re: [PATCH] fix boot hang on some architectures

[Arnaldo Carvalho de Melo <acme@conectiva.com.br>]

Em Sat, Apr 02, 2005 at 01:46:03PM -0600, James Bottomley escreveu:
> Well, this is a brown paper bag for someone.  The new protocol

/me using such bag now :(

Thanks a lot for the fix.

David, Please apply.

> registration locking uses a rwlock to limit access to the protocol list.
> Unfortunately, the initialisation:
> 
> static rwlock_t proto_list_lock;
> 
> Only works to initialise the lock as unlocked on platforms whose unlock
> signal is all zeros.  On other platforms, they think it's already locked
> and hang forever.
> 
> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
> 
> 
> ===== net/core/sock.c 1.67 vs edited =====
> --- 1.67/net/core/sock.c	2005-03-26 17:04:35 -06:00
> +++ edited/net/core/sock.c	2005-04-02 13:37:20 -06:00
> @@ -1352,7 +1352,7 @@
>  
>  EXPORT_SYMBOL(sk_common_release);
>  
> -static rwlock_t proto_list_lock;
> +static DEFINE_RWLOCK(proto_list_lock);
>  static LIST_HEAD(proto_list);
>  
>  int proto_register(struct proto *prot, int alloc_slab)