Btrfs: fix cache_block_group error handling
cache block group had a few bugs in the error handling code,
this makes sure paths get properly released and the correct return value
goes out.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index c0bb6b9..1c10ffc 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -66,7 +66,7 @@
struct btrfs_block_group_cache *block_group)
{
struct btrfs_path *path;
- int ret;
+ int ret = 0;
struct btrfs_key key;
struct extent_buffer *leaf;
struct extent_io_tree *free_space_cache;
@@ -102,10 +102,10 @@
btrfs_set_key_type(&key, BTRFS_EXTENT_ITEM_KEY);
ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
if (ret < 0)
- return ret;
+ goto err;
ret = btrfs_previous_item(root, path, 0, BTRFS_EXTENT_ITEM_KEY);
if (ret < 0)
- return ret;
+ goto err;
if (ret == 0) {
leaf = path->nodes[0];
btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);
@@ -161,9 +161,10 @@
last + hole_size - 1, GFP_NOFS);
}
block_group->cached = 1;
+ ret = 0;
err:
btrfs_free_path(path);
- return 0;
+ return ret;
}
struct btrfs_block_group_cache *btrfs_lookup_first_block_group(struct