diff -ur linux/include/linux/swap.h linux-prumpf/include/linux/swap.h
--- linux/include/linux/swap.h	Thu Mar  8 10:01:30 2001
+++ linux-prumpf/include/linux/swap.h	Thu Mar  8 10:14:12 2001
@@ -284,7 +284,7 @@
 #endif
 
 #define page_ramdisk(page) \
-	(page->buffers && (MAJOR(page->buffers->b_dev) == RAMDISK_MAJOR))
+	(page->buffers && (MAJOR(page->buffers->b_dev) == RAMDISK_MAJOR) && buffer_protected(page->buffers))
 
 extern spinlock_t swaplock;