bcachefs: btree node scan: handle encrypted nodes

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

diff --git a/fs/bcachefs/btree_node_scan.c b/fs/bcachefs/btree_node_scan.c
index 556f76f5c84e1613c332e7443e6bb8b1602dd359..20f2b37c4474cb57ba059b5168327175604b8a56 100644 (file)
--- a/fs/bcachefs/btree_node_scan.c
+++ b/fs/bcachefs/btree_node_scan.c
@@ -133,9 +133,19 @@ static void try_read_btree_node(struct find_btree_nodes *f, struct bch_dev *ca,
        if (le64_to_cpu(bn->magic) != bset_magic(c))
                return;
 
+       if (bch2_csum_type_is_encryption(BSET_CSUM_TYPE(&bn->keys))) {
+               struct nonce nonce = btree_nonce(&bn->keys, 0);
+               unsigned bytes = (void *) &bn->keys - (void *) &bn->flags;
+
+               bch2_encrypt(c, BSET_CSUM_TYPE(&bn->keys), nonce, &bn->flags, bytes);
+       }
+
        if (btree_id_is_alloc(BTREE_NODE_ID(bn)))
                return;
 
+       if (BTREE_NODE_LEVEL(bn) >= BTREE_MAX_DEPTH)
+               return;
+
        rcu_read_lock();
        struct found_btree_node n = {
                .btree_id       = BTREE_NODE_ID(bn),