diff -purN -X /home/mbligh/.diff.exclude 550-config_debug/fs/buffer.c 551-akpm_bear_pit/fs/buffer.c
--- 550-config_debug/fs/buffer.c	2003-07-28 15:32:58.000000000 -0700
+++ 551-akpm_bear_pit/fs/buffer.c	2003-07-28 19:02:09.000000000 -0700
@@ -414,6 +414,9 @@ __find_get_block_slow(struct block_devic
 		bh = bh->b_this_page;
 	} while (bh != head);
 	buffer_error();
+	printk("block=%llu, b_blocknr=%llu\n",
+		(unsigned long long)block, (unsigned long long)bh->b_blocknr);
+	printk("b_state=0x%08lx, b_size=%u\n", bh->b_state, bh->b_size);
 out_unlock:
 	spin_unlock(&bd_mapping->private_lock);
 	page_cache_release(page);