From 4c03eab1aaa30ada3819930ae4e5f22ee534cb23 Mon Sep 17 00:00:00 2001
From: Peter Zhu <peter@peterzhu.ca>
Date: Tue, 18 Jul 2023 10:33:28 -0400
Subject: [PATCH] Lazily allocate pages at boot

We can just set alloctable pages for the first size pool rather than
eagerly allocating pages.
---
 gc.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/gc.c b/gc.c
index 8658660faf..d96124003f 100644
--- a/gc.c
+++ b/gc.c
@@ -3713,10 +3713,8 @@ Init_heap(void)
     objspace->rgengc.oldmalloc_increase_limit = gc_params.oldmalloc_limit_min;
 #endif
 
-    heap_add_pages(objspace, &size_pools[0], SIZE_POOL_EDEN_HEAP(&size_pools[0]), gc_params.heap_init_slots / HEAP_PAGE_OBJ_LIMIT);
-
-    /* Give other size pools allocatable pages. */
-    for (int i = 1; i < SIZE_POOL_COUNT; i++) {
+    /* Set size pools allocatable pages. */
+    for (int i = 0; i < SIZE_POOL_COUNT; i++) {
         rb_size_pool_t *size_pool = &size_pools[i];
         int multiple = size_pool->slot_size / BASE_SLOT_SIZE;
         size_pool->allocatable_pages = gc_params.heap_init_slots * multiple / HEAP_PAGE_OBJ_LIMIT;