btrfs: use BTRFS_PATH_AUTO_FREE in run_delayed_extent_op()

This is the trivial pattern for path auto free, initialize at the
beginning and free at the end with simple goto -> return conversions.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 6e82d627f12cf75c8d7e9f6407e96c5b9fcc3f01..5de1a1293c9386c741d5d95c0a2eddea410e1c7d 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -1626,7 +1626,7 @@ static int run_delayed_extent_op(struct btrfs_trans_handle *trans,
        struct btrfs_fs_info *fs_info = trans->fs_info;
        struct btrfs_root *root;
        struct btrfs_key key;
-       struct btrfs_path *path;
+       BTRFS_PATH_AUTO_FREE(path);
        struct btrfs_extent_item *ei;
        struct extent_buffer *leaf;
        u32 item_size;
@@ -1657,7 +1657,7 @@ static int run_delayed_extent_op(struct btrfs_trans_handle *trans,
 again:
        ret = btrfs_search_slot(trans, root, &key, path, 0, 1);
        if (ret < 0) {
-               goto out;
+               return ret;
        } else if (ret > 0) {
                if (metadata) {
                        if (path->slots[0] > 0) {
@@ -1683,7 +1683,7 @@ again:
                        btrfs_err(fs_info,
                  "missing extent item for extent %llu num_bytes %llu level %d",
                                  head->bytenr, head->num_bytes, head->level);
-                       goto out;
+                       return ret;
                }
        }
 
@@ -1696,13 +1696,12 @@ again:
                          "unexpected extent item size, has %u expect >= %zu",
                          item_size, sizeof(*ei));
                btrfs_abort_transaction(trans, ret);
-               goto out;
+               return ret;
        }
 
        ei = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);
        __run_delayed_extent_op(extent_op, leaf, ei);
-out:
-       btrfs_free_path(path);
+
        return ret;
 }