btrfs: add set/get accessors for root_item::drop_level
The drop_level member is used directly unlike all the other int types in
root_item. Add the definition and use it everywhere. The type is u8 so
there's no conversion necessary and the helpers are properly inlined,
this is for consistency.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index cf01f97..bd01e2c 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1179,7 +1179,7 @@ struct btrfs_root *btrfs_create_tree(struct btrfs_trans_handle *trans,
generate_random_guid(root->root_item.uuid);
else
export_guid(root->root_item.uuid, &guid_null);
- root->root_item.drop_level = 0;
+ btrfs_set_root_drop_level(&root->root_item, 0);
key.objectid = objectid;
key.type = BTRFS_ROOT_ITEM_KEY;
