bcachefs: Reduce/kill BKEY_PADDED usetest

With various newer key types - stripe keys, inline data extents - the
old approach of calculating the maximum size of the value is becoming
more and more error prone. Better to switch to bkey_on_stack, which can
dynamically allocate if necessary to handle any size bkey.

In particular we also want to get rid of BKEY_EXTENT_VAL_U64s_MAX.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/bcachefs/btree_update_interior.c b/fs/bcachefs/btree_update_interior.c
index 8f96756ba648..4437c2ddc338 100644
--- a/fs/bcachefs/btree_update_interior.c
+++ b/fs/bcachefs/btree_update_interior.c
@@ -195,7 +195,7 @@ static struct btree *__bch2_btree_node_alloc(struct bch_fs *c,
 {
 	struct write_point *wp;
 	struct btree *b;
-	BKEY_PADDED(k) tmp;
+	__BKEY_PADDED(k, BKEY_BTREE_PTR_VAL_U64s_MAX) tmp;
 	struct open_buckets ob = { .nr = 0 };
 	struct bch_devs_list devs_have = (struct bch_devs_list) { 0 };
 	unsigned nr_reserve;