--- linux-2.4.9/include/linux/spinlock.h	Wed Aug 15 14:21:11 2001
+++ linux/include/linux/spinlock.h	Thu Aug 16 18:29:09 2001
@@ -34,6 +34,11 @@
 #ifdef CONFIG_SMP
 #include <asm/spinlock.h>
 
+# ifndef CONFIG_HAVE_DEC_LOCK
+#  define atomic_dec_and_lock(atomic,lock) atomic_dec_and_test(atomic)
+# endif
+
+
 #elif !defined(spin_lock_init) /* !SMP and spin_lock_init not previously
                                   defined (e.g. by including asm/spinlock.h */