[PATCH] 2.6.21-rt6

[Sven-Thorsten Dietrich]

Add header and export for rt_write_trylock_irqsave.


Index: linux-2.6.21/include/linux/spinlock.h
===================================================================
--- linux-2.6.21.orig/include/linux/spinlock.h
+++ linux-2.6.21/include/linux/spinlock.h
@@ -294,6 +294,7 @@ do {									\
 extern void __lockfunc rt_write_lock(rwlock_t *rwlock);
 extern void __lockfunc rt_read_lock(rwlock_t *rwlock);
 extern int __lockfunc rt_write_trylock(rwlock_t *rwlock);
+extern int __lockfunc rt_write_trylock_irqsave(rwlock_t *trylock);
 extern int __lockfunc rt_read_trylock(rwlock_t *rwlock);
 extern void __lockfunc rt_write_unlock(rwlock_t *rwlock);
 extern void __lockfunc rt_read_unlock(rwlock_t *rwlock);
Index: linux-2.6.21/kernel/rt.c
===================================================================
--- linux-2.6.21.orig/kernel/rt.c
+++ linux-2.6.21/kernel/rt.c
@@ -178,6 +178,7 @@ int __lockfunc rt_write_trylock_irqsave(
 	*flags = 0;
 	return rt_write_trylock(rwlock);
 }
+EXPORT_SYMBOL(rt_write_trylock_irqsave);
 
 int __lockfunc rt_read_trylock(rwlock_t *rwlock)
 {


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