bcachefs: Save key_cache_path in peek_slot()

When bch2_btree_iter_peek_slot() clones the iterator to search for the
next key, and then discovers that the key from the cloned iterator is
the key we want to return - we also want to save the
iter->key_cache_path as well, for the update path.

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

diff --git a/fs/bcachefs/btree_iter.c b/fs/bcachefs/btree_iter.c
index 4cb43c676ee13a9cff1576d078b35fa1da8aba59..826ad6fa74cff7428fa84aa3103015822daa831c 100644 (file)
--- a/fs/bcachefs/btree_iter.c
+++ b/fs/bcachefs/btree_iter.c
@@ -2505,6 +2505,7 @@ struct bkey_s_c bch2_btree_iter_peek_slot(struct btree_iter *iter)
                        k = bch2_btree_iter_peek_upto(&iter2, end);
 
                        if (k.k && !bkey_err(k)) {
+                               swap(iter->key_cache_path, iter2.key_cache_path);
                                iter->k = iter2.k;
                                k.k = &iter->k;
                        }