bcachefs: trans_for_each_path_with_node() no longer uses path->idx

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

fs/bcachefs/btree_iter.c

@@ -418,8 +418,9 @@ void bch2_btree_path_fix_key_modified(struct btree_trans *trans,
 				      struct bkey_packed *where)
 {
 	struct btree_path *path;
+	unsigned i;
 
-	trans_for_each_path_with_node(trans, b, path) {
+	trans_for_each_path_with_node(trans, b, path, i) {
 		__bch2_btree_path_fix_key_modified(path, b, where);
 		bch2_btree_path_verify_level(trans, path, b->c.level);
 	}
@@ -526,6 +527,7 @@ void bch2_btree_node_iter_fix(struct btree_trans *trans,
 {
 	struct bset_tree *t = bch2_bkey_to_bset_inlined(b, where);
 	struct btree_path *linked;
+	unsigned i;
 
 	if (node_iter != &path->l[b->c.level].iter) {
 		__bch2_btree_node_iter_fix(path, b, node_iter, t,
@@ -535,7 +537,7 @@ void bch2_btree_node_iter_fix(struct btree_trans *trans,
 			bch2_btree_node_iter_verify(node_iter, b);
 	}
 
-	trans_for_each_path_with_node(trans, b, linked) {
+	trans_for_each_path_with_node(trans, b, linked, i) {
 		__bch2_btree_node_iter_fix(linked, b,
 					   &linked->l[b->c.level].iter, t,
 					   where, clobber_u64s, new_u64s);
@@ -714,8 +716,9 @@ void bch2_trans_node_add(struct btree_trans *trans,
 void bch2_trans_node_reinit_iter(struct btree_trans *trans, struct btree *b)
 {
 	struct btree_path *path;
+	unsigned i;
 
-	trans_for_each_path_with_node(trans, b, path)
+	trans_for_each_path_with_node(trans, b, path, i)
 		__btree_path_level_init(path, b->c.level);
 
 	bch2_trans_revalidate_updates_in_node(trans, b);

fs/bcachefs/btree_iter.h

@@ -151,22 +151,21 @@ static inline bool __path_has_node(const struct btree_path *path,
 
 static inline struct btree_path *
 __trans_next_path_with_node(struct btree_trans *trans, struct btree *b,
-			    unsigned idx)
+			    unsigned *idx)
 {
-	struct btree_path *path = __trans_next_path(trans, &idx);
+	struct btree_path *path;
 
-	while ((path = __trans_next_path(trans, &idx)) &&
+	while ((path = __trans_next_path(trans, idx)) &&
 		!__path_has_node(path, b))
-	       idx++;
+	       (*idx)++;
 
 	return path;
 }
 
-#define trans_for_each_path_with_node(_trans, _b, _path)		\
-	for (_path = __trans_next_path_with_node((_trans), (_b), 1);	\
-	     (_path);							\
-	     _path = __trans_next_path_with_node((_trans), (_b),	\
-						 (_path)->idx + 1))
+#define trans_for_each_path_with_node(_trans, _b, _path, _iter)		\
+	for (_iter = 1;							\
+	     (_path = __trans_next_path_with_node((_trans), (_b), &_iter));\
+	     _iter++)
 
 btree_path_idx_t __bch2_btree_path_make_mut(struct btree_trans *, btree_path_idx_t,
 					    bool, unsigned long);

fs/bcachefs/btree_locking.h

@@ -175,6 +175,7 @@ bch2_btree_node_unlock_write_inlined(struct btree_trans *trans, struct btree_pat
 				     struct btree *b)
 {
 	struct btree_path *linked;
+	unsigned i;
 
 	EBUG_ON(path->l[b->c.level].b != b);
 	EBUG_ON(path->l[b->c.level].lock_seq != six_lock_seq(&b->c.lock));
@@ -182,7 +183,7 @@ bch2_btree_node_unlock_write_inlined(struct btree_trans *trans, struct btree_pat
 
 	mark_btree_node_locked_noreset(path, b->c.level, BTREE_NODE_INTENT_LOCKED);
 
-	trans_for_each_path_with_node(trans, b, linked)
+	trans_for_each_path_with_node(trans, b, linked, i)
 		linked->l[b->c.level].lock_seq++;
 
 	six_unlock_write(&b->c.lock);

fs/bcachefs/btree_update_interior.c

@@ -1646,13 +1646,14 @@ bch2_btree_insert_keys_interior(struct btree_update *as,
 				struct keylist *keys)
 {
 	struct btree_path *linked;
+	unsigned i;
 
 	__bch2_btree_insert_keys_interior(as, trans, path, b,
 					  path->l[b->c.level].iter, keys);
 
 	btree_update_updated_node(as, b);
 
-	trans_for_each_path_with_node(trans, b, linked)
+	trans_for_each_path_with_node(trans, b, linked, i)
 		bch2_btree_node_iter_peek(&linked->l[b->c.level].iter, b);
 
 	bch2_trans_verify_paths(trans);