bcachefs: Fix bch2_btree_iter_peek_prev()

In !BTREE_ITER_IS_EXTENTS mode, we shouldn't be looking at k->size, i.e.
we shouldn't use bkey_start_pos().

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

diff --git a/fs/bcachefs/btree_iter.c b/fs/bcachefs/btree_iter.c
index cf26da1ab895b045a0361a0194067253c7150fbf..31d8c89ae255f5a0f918c0c170285ac8da4daf0d 100644 (file)
--- a/fs/bcachefs/btree_iter.c
+++ b/fs/bcachefs/btree_iter.c
@@ -1779,7 +1779,7 @@ struct bkey_s_c bch2_btree_iter_peek_prev(struct btree_iter *iter)
                if (!k.k ||
                    ((iter->flags & BTREE_ITER_IS_EXTENTS)
                     ? bkey_cmp(bkey_start_pos(k.k), iter->pos) >= 0
-                    : bkey_cmp(bkey_start_pos(k.k), iter->pos) > 0))
+                    : bkey_cmp(k.k->p, iter->pos) > 0))
                        k = btree_iter_level_prev(iter, l);
 
                if (likely(k.k))