bcachefs: Fix traversing to interior nodes

NULL is used to mean "reach end of traversal" - we were only
initializing the leaf node in the iterator to the right sentinal value.

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

diff --git a/fs/bcachefs/btree_iter.c b/fs/bcachefs/btree_iter.c
index f002ddc18cbb86885696de1d9ec05d82ab6824b9..bf68ab7257ce7dbdc43d3f4e45ee1a80556c11e9 100644 (file)
--- a/fs/bcachefs/btree_iter.c
+++ b/fs/bcachefs/btree_iter.c
@@ -1732,8 +1732,7 @@ static inline void bch2_btree_iter_init(struct btree_trans *trans,
        iter->nodes_locked              = 0;
        iter->nodes_intent_locked       = 0;
        for (i = 0; i < ARRAY_SIZE(iter->l); i++)
-               iter->l[i].b            = NULL;
-       iter->l[iter->level].b          = BTREE_ITER_NO_NODE_INIT;
+               iter->l[i].b            = BTREE_ITER_NO_NODE_INIT;
 
        prefetch(c->btree_roots[btree_id].b);
 }