btree_new_page
if ((next = btree_new_page(bt, P_OVERFLOW)) == NULL)
if ((ofp = btree_new_page(bt, P_OVERFLOW)) == NULL)
if ((mp->parent = btree_new_page(bt, P_BRANCH)) == NULL)
static struct mpage *btree_new_page(struct btree *bt, uint32_t flags);
if ((pright = btree_new_page(bt, mp->page->flags)) == NULL)
if ((mp = btree_new_page(bt, P_LEAF)) == NULL) {
if ((mp = btree_new_page(bt, P_META)) == NULL)