[PATCH 01/11] bcachefs: bch2_btree_iter_peek_slot() handles navigating to nonexistent depth

[Kent Overstreet]

Signed-off-by: Kent Overstreet <kent.overstr...@linux.dev>
---
 fs/bcachefs/btree_iter.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/bcachefs/btree_iter.c b/fs/bcachefs/btree_iter.c
index c291d495b85b..367231ab1980 100644
--- a/fs/bcachefs/btree_iter.c
+++ b/fs/bcachefs/btree_iter.c
@@ -2770,6 +2770,10 @@ struct bkey_s_c bch2_btree_iter_peek_slot(struct 
btree_iter *iter)
                goto out_no_locked;
        }
 
+       struct btree_path *path = btree_iter_path(trans, iter);
+       if (unlikely(!btree_path_node(path, path->level)))
+               return bkey_s_c_null;
+
        if ((iter->flags & BTREE_ITER_cached) ||
            !(iter->flags & 
(BTREE_ITER_is_extents|BTREE_ITER_filter_snapshots))) {
                k = bkey_s_c_null;
-- 
2.45.2