From: Yan <yanzheng@21cn.com>
Date: Tue, 22 Jan 2008 16:34:13 +0000 (-0500)
Subject: Fix for test_range_bit
X-Git-Tag: upstream/0.20.rc1~327
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6f30791b5120b3a4c83ff4a9b451c1647240c480;p=platform%2Fupstream%2Fbtrfs-progs.git

Fix for test_range_bit

test_range_bit doesn't properly handle the case: there's a hole at the
end of the range and there's no other extent_state after the range.
---

diff --git a/extent_map.c b/extent_map.c
index c797926..bc67c0e 100644
--- a/extent_map.c
+++ b/extent_map.c
@@ -473,6 +473,11 @@ int test_range_bit(struct extent_map_tree *tree, u64 start, u64 end,
 		if (start > end)
 			break;
 		node = next_cache_extent(node);
+		if (!node) {
+			if (filled)
+				bitset = 0;
+			break;
+		}
 	}
 	return bitset;
 }