bcachefs: delete some dead code

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

fs/bcachefs/util.h

@@ -455,96 +455,12 @@ do {									\
 			    (var)->p_term_inverse, 1, INT_MAX);		\
 } while (0)
 
-#define __DIV_SAFE(n, d, zero)						\
-({									\
-	typeof(n) _n = (n);						\
-	typeof(d) _d = (d);						\
-	_d ? _n / _d : zero;						\
-})
-
-#define DIV_SAFE(n, d)	__DIV_SAFE(n, d, 0)
-
 #define container_of_or_null(ptr, type, member)				\
 ({									\
 	typeof(ptr) _ptr = ptr;						\
 	_ptr ? container_of(_ptr, type, member) : NULL;			\
 })
 
-#define RB_INSERT(root, new, member, cmp)				\
-({									\
-	__label__ dup;							\
-	struct rb_node **n = &(root)->rb_node, *parent = NULL;		\
-	typeof(new) this;						\
-	int res, ret = -1;						\
-									\
-	while (*n) {							\
-		parent = *n;						\
-		this = container_of(*n, typeof(*(new)), member);	\
-		res = cmp(new, this);					\
-		if (!res)						\
-			goto dup;					\
-		n = res < 0						\
-			? &(*n)->rb_left				\
-			: &(*n)->rb_right;				\
-	}								\
-									\
-	rb_link_node(&(new)->member, parent, n);			\
-	rb_insert_color(&(new)->member, root);				\
-	ret = 0;							\
-dup:									\
-	ret;								\
-})
-
-#define RB_SEARCH(root, search, member, cmp)				\
-({									\
-	struct rb_node *n = (root)->rb_node;				\
-	typeof(&(search)) this, ret = NULL;				\
-	int res;							\
-									\
-	while (n) {							\
-		this = container_of(n, typeof(search), member);		\
-		res = cmp(&(search), this);				\
-		if (!res) {						\
-			ret = this;					\
-			break;						\
-		}							\
-		n = res < 0						\
-			? n->rb_left					\
-			: n->rb_right;					\
-	}								\
-	ret;								\
-})
-
-#define RB_GREATER(root, search, member, cmp)				\
-({									\
-	struct rb_node *n = (root)->rb_node;				\
-	typeof(&(search)) this, ret = NULL;				\
-	int res;							\
-									\
-	while (n) {							\
-		this = container_of(n, typeof(search), member);		\
-		res = cmp(&(search), this);				\
-		if (res < 0) {						\
-			ret = this;					\
-			n = n->rb_left;					\
-		} else							\
-			n = n->rb_right;				\
-	}								\
-	ret;								\
-})
-
-#define RB_FIRST(root, type, member)					\
-	container_of_or_null(rb_first(root), type, member)
-
-#define RB_LAST(root, type, member)					\
-	container_of_or_null(rb_last(root), type, member)
-
-#define RB_NEXT(ptr, member)						\
-	container_of_or_null(rb_next(&(ptr)->member), typeof(*ptr), member)
-
-#define RB_PREV(ptr, member)						\
-	container_of_or_null(rb_prev(&(ptr)->member), typeof(*ptr), member)
-
 /* Does linear interpolation between powers of two */
 static inline unsigned fract_exp_two(unsigned x, unsigned fract_bits)
 {