18 #define __INIT_KOBJ_ATTR(_name, _mode, _show, _store)			\  argument
20 	.attr	= { .name = __stringify(_name), .mode = _mode },	\
25 #define BTRFS_ATTR_RW(_prefix, _name, _show, _store)			\  argument
26 	static struct kobj_attribute btrfs_attr_##_prefix##_##_name =	\
27 			__INIT_KOBJ_ATTR(_name, 0644, _show, _store)
29 #define BTRFS_ATTR(_prefix, _name, _show)				\  argument
30 	static struct kobj_attribute btrfs_attr_##_prefix##_##_name =	\
31 			__INIT_KOBJ_ATTR(_name, 0444, _show, NULL)
33 #define BTRFS_ATTR_PTR(_prefix, _name)					\  argument
34 	(&btrfs_attr_##_prefix##_##_name.attr)
43 #define BTRFS_FEAT_ATTR(_name, _feature_set, _feature_prefix, _feature_bit)  \  argument
44 static struct btrfs_feature_attr btrfs_attr_features_##_name = {	     \
45 	.kobj_attr = __INIT_KOBJ_ATTR(_name, S_IRUGO,			     \
51 #define BTRFS_FEAT_ATTR_PTR(_name)					     \  argument
52 	(&btrfs_attr_features_##_name.kobj_attr.attr)