1048  * Subtree collapse to node iterator.
1053 	struct assoc_array_delete_collapse_context *collapse = iterator_data;  in assoc_array_delete_collapse_iterator()  local
1055 	if (leaf == collapse->skip_leaf)  in assoc_array_delete_collapse_iterator()
1058 	BUG_ON(collapse->slot >= ASSOC_ARRAY_FAN_OUT);  in assoc_array_delete_collapse_iterator()
1060 	collapse->node->slots[collapse->slot++] = assoc_array_leaf_to_ptr(leaf);  in assoc_array_delete_collapse_iterator()
1087 	struct assoc_array_delete_collapse_context collapse;  in assoc_array_delete()  local
1155 	 * leaves in it, then attempt to collapse it - and attempt to  in assoc_array_delete()
1156 	 * recursively collapse up the tree.  in assoc_array_delete()
1158 	 * We could also try and collapse in partially filled subtrees to take  in assoc_array_delete()
1181 		/* Look further up the tree to see if we can collapse this node  in assoc_array_delete()
1186 		pr_devel("collapse subtree: %ld\n", parent->nr_leaves_on_branch);  in assoc_array_delete()
1212 			/* Create a new node to collapse into */  in assoc_array_delete()
1223 			collapse.node = new_n0;  in assoc_array_delete()
1224 			collapse.skip_leaf = assoc_array_ptr_to_leaf(edit->dead_leaf);  in assoc_array_delete()
1225 			collapse.slot = 0;  in assoc_array_delete()
1229 						    &collapse);  in assoc_array_delete()
1230 			pr_devel("collapsed %d,%lu\n", collapse.slot, new_n0->nr_leaves_on_branch);  in assoc_array_delete()
1231 			BUG_ON(collapse.slot != new_n0->nr_leaves_on_branch - 1);  in assoc_array_delete()