-#define to_btrfs_feature_attr(a) \
- container_of(a, struct btrfs_feature_attr, kobj_attr)
-#define attr_to_btrfs_attr(a) container_of(a, struct kobj_attribute, attr)
-#define attr_to_btrfs_feature_attr(a) \
- to_btrfs_feature_attr(attr_to_btrfs_attr(a))
+static inline struct btrfs_feature_attr *
+to_btrfs_feature_attr(struct kobj_attribute *a)
+{
+ return container_of(a, struct btrfs_feature_attr, kobj_attr);
+}
+
+static inline struct kobj_attribute *attr_to_btrfs_attr(struct attribute *attr)
+{
+ return container_of(attr, struct kobj_attribute, attr);
+}
+
+static inline struct btrfs_feature_attr *
+attr_to_btrfs_feature_attr(struct attribute *attr)
+{
+ return to_btrfs_feature_attr(attr_to_btrfs_attr(attr));
+}
+