btrfs: Fix BUG_ON for fs converted from extN

Commit Message

Yan, Zheng May 31, 2010, 9:04 a.m. UTC

None

Patch

diff -urp 1/fs/btrfs/extent-tree.c 3/fs/btrfs/extent-tree.c
--- 1/fs/btrfs/extent-tree.c	2010-05-26 23:55:46.610378078 +0800
+++ 3/fs/btrfs/extent-tree.c	2010-05-31 16:36:51.907580723 +0800
@@ -4360,7 +4360,8 @@  void btrfs_free_tree_block(struct btrfs_
 
 	block_rsv = get_block_rsv(trans, root);
 	cache = btrfs_lookup_block_group(root->fs_info, buf->start);
-	BUG_ON(block_rsv->space_info != cache->space_info);
+	if (block_rsv->space_info != cache->space_info)
+		goto out;
 
 	if (btrfs_header_generation(buf) == trans->transid) {
 		if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID) {