[Btrfs-devel][PATCH]small fix for find_lock_delalloc_range.

[Yan Zheng]

Hello,

There is a 'finish_wait', but no 'prepare_to_wait' . So I think that
the 'prepare_to_wait' is missing. The second change is  according to
the name of variable.

Regards
YZ
---
diff -r bc6bfcf7a158 extent_map.c
--- a/extent_map.c	Tue Oct 30 16:56:53 2007 -0400
+++ b/extent_map.c	Wed Oct 31 21:58:21 2007 +0800
@@ -1039,6 +1039,8 @@ search_again:
 			if (state->state & EXTENT_LOCKED) {
 				DEFINE_WAIT(wait);
 				atomic_inc(&state->refs);
+				prepare_to_wait(&state->wq, &wait,
+						TASK_UNINTERRUPTIBLE);
 				write_unlock_irq(&tree->lock);
 				schedule();
 				write_lock_irq(&tree->lock);
@@ -1054,7 +1056,7 @@ search_again:
 		node = rb_next(node);
 		if (!node)
 			break;
-		total_bytes = state->end - state->start + 1;
+		total_bytes += state->end - state->start + 1;
 		if (total_bytes >= max_bytes)
 			break;
 	}