[PATCH] btrfs: use BTRFS_PATH_AUTO_FREE in btrfs_truncate_inode_items()

[Yangtao Li]

All cleanup paths lead to btrfs_path_free so we can define path with the
automatic free callback.

And David Sterba point out that: 
	We may still find cases worth converting, the typical pattern is
	btrfs_path_alloc() somewhere near top of the function and
	btrfs_free_path() called right before a return.

So let's convert it.

Signed-off-by: Yangtao Li <frank.li@xxxxxxxx>
---
 fs/btrfs/inode-item.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/btrfs/inode-item.c b/fs/btrfs/inode-item.c
index 3530de0618c8..c9d37f6bb099 100644
--- a/fs/btrfs/inode-item.c
+++ b/fs/btrfs/inode-item.c
@@ -456,7 +456,7 @@ int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
 			       struct btrfs_truncate_control *control)
 {
 	struct btrfs_fs_info *fs_info = root->fs_info;
-	struct btrfs_path *path;
+	BTRFS_PATH_AUTO_FREE(path);
 	struct extent_buffer *leaf;
 	struct btrfs_file_extent_item *fi;
 	struct btrfs_key key;
@@ -743,6 +743,5 @@ int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
 	if (!ret && control->last_size > new_size)
 		control->last_size = new_size;
 
-	btrfs_free_path(path);
 	return ret;
 }
-- 
2.39.0