-#define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a) - 1)
-#define __ALIGN_MASK(x, mask) (((x) + (mask)) & ~(mask))
-#define PTR_ALIGN(p, a) ((typeof(p)) ALIGN((unsigned long) (p), a))
-#define ALIGN_FLOOR(x, a) __ALIGN_FLOOR_MASK(x, (typeof(x)) (a) - 1)
-#define __ALIGN_FLOOR_MASK(x, mask) ((x) & ~(mask))
-#define PTR_ALIGN_FLOOR(p, a) \
- ((typeof(p)) ALIGN_FLOOR((unsigned long) (p), a))
-#define IS_ALIGNED(x, a) (((x) & ((typeof(x)) (a) - 1)) == 0)
+#define BT_ALIGN(x, a) __BT_ALIGN_MASK(x, (typeof(x))(a) - 1)
+#define __BT_ALIGN_MASK(x, mask) (((x) + (mask)) & ~(mask))
+#define BT_PTR_ALIGN(p, a) ((typeof(p)) BT_ALIGN((unsigned long) (p), a))
+#define BT_ALIGN_FLOOR(x, a) __BT_ALIGN_FLOOR_MASK(x, (typeof(x)) (a) - 1)
+#define __BT_ALIGN_FLOOR_MASK(x, mask) ((x) & ~(mask))
+#define BT_PTR_ALIGN_FLOOR(p, a) \
+ ((typeof(p)) BT_ALIGN_FLOOR((unsigned long) (p), a))
+#define BT_IS_ALIGNED(x, a) (((x) & ((typeof(x)) (a) - 1)) == 0)