bcache: Fix a bug recovering from unclean shutdown

The code to fixup incorrect bucket prios incorrectly did not skip btree node
freeing keys

Signed-off-by: Kent Overstreet <kmo@daterainc.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index 5f9c2a665ca5..2d4a864865eb 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -1726,9 +1726,9 @@ static int bch_btree_check_recurse(struct btree *b, struct btree_op *op,
                             !ptr_stale(b->c, k, i)) {
                                 g->gen = PTR_GEN(k, i);
 
-                                if (b->level)
+                                if (b->level && bkey_cmp(k, &ZERO_KEY))
                                         g->prio = BTREE_PRIO;
-                                else if (g->prio == BTREE_PRIO)
+                                else if (!b->level && g->prio == BTREE_PRIO)
                                         g->prio = INITIAL_PRIO;
                         }
                 }