btrfs-progs: check: use on-stack path buffer in record_orphan_data_extents

We don't need to conserve stack space too much unlike kernel, also
remove one error condition.

Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/cmds-check.c b/cmds-check.c
index 62bcca0..eb579c0 100644 (file)
--- a/cmds-check.c
+++ b/cmds-check.c
@@ -7468,15 +7468,13 @@ static int record_orphan_data_extents(struct btrfs_fs_info *fs_info,
        struct extent_backref *back;
        struct data_backref *dback;
        struct orphan_data_extent *orphan;
-       struct btrfs_path *path;
+       struct btrfs_path path;
        int recorded_data_ref = 0;
        int ret = 0;
 
        if (rec->metadata)
                return 1;
-       path = btrfs_alloc_path();
-       if (!path)
-               return -ENOMEM;
+       btrfs_init_path(&path);
        list_for_each_entry(back, &rec->backrefs, list) {
                if (back->full_backref || !back->is_data ||
                    !back->found_extent_tree)
@@ -7498,8 +7496,8 @@ static int record_orphan_data_extents(struct btrfs_fs_info *fs_info,
                key.type = BTRFS_EXTENT_DATA_KEY;
                key.offset = dback->offset;
 
-               ret = btrfs_search_slot(NULL, dest_root, &key, path, 0, 0);
-               btrfs_release_path(path);
+               ret = btrfs_search_slot(NULL, dest_root, &key, &path, 0, 0);
+               btrfs_release_path(&path);
                /*
                 * For ret < 0, it's OK since the fs-tree may be corrupted,
                 * we need to record it for inode/file extent rebuild.
@@ -7526,7 +7524,7 @@ static int record_orphan_data_extents(struct btrfs_fs_info *fs_info,
                recorded_data_ref = 1;
        }
 out:
-       btrfs_free_path(path);
+       btrfs_release_path(&path);
        if (!ret)
                return !recorded_data_ref;
        else