{"id":"free-list-is-lifo","text":"The page free list is LIFO: `free_page` pushes to the head and `allocate_page` pops from the head, so the most recently freed page is reused first.","truth_value":"IN","source":"entries/2026/05/29/b-tree-storage-engine-btree-free_page.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"free-list-is-lifo","truth_value":"IN","reason":"premise"}]}}