From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mike-Ro-Chanel <mikerochanel@yahoo.it>
Subject: A beginner spinlock question
Date: Fri, 29 Aug 2003 10:52:00 +0200
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Hi All,
I'm writing my first "match" module for iptables.
I use spin_lock_bh()/spin_unlock_bh() functions for mutex between BHs.

My problem:

- I include <linux/spin_lock.h> for mutex functions declaration

- On Red Hat 9.0 with its 2.4.20-8 (redhat) kernel the compilation 
procedure goes all right.

- If I compile my module with 2.4.21 original (Linus) kernel I get this 
messages:

warning: implicit declaration of function `local_bh_disable'
warning: implicit declaration of function `local_bh_enable'


Anybody can help Me?

Regards.