diff options
Diffstat (limited to 'libbcachefs/btree_update_interior.h')
| -rw-r--r-- | libbcachefs/btree_update_interior.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/libbcachefs/btree_update_interior.h b/libbcachefs/btree_update_interior.h index 25bfc7ab..abf14e4c 100644 --- a/libbcachefs/btree_update_interior.h +++ b/libbcachefs/btree_update_interior.h @@ -183,9 +183,14 @@ void bch2_btree_root_alloc(struct bch_fs *, enum btree_id); static inline unsigned btree_update_reserve_required(struct bch_fs *c, struct btree *b) { - unsigned depth = btree_node_root(c, b)->level - b->level; + unsigned depth = btree_node_root(c, b)->level - b->level + 1; - return btree_reserve_required_nodes(depth); + /* + * Number of nodes we might have to allocate in a worst case btree + * split operation - we split all the way up to the root, then allocate + * a new root. + */ + return depth * 2 + 1; } static inline void btree_node_reset_sib_u64s(struct btree *b) |