diff --git a/CMakeLists.txt b/CMakeLists.txt
index 81cc339a..e9eb6feb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,6 +18,7 @@ set(mi_install_dir "lib/mimalloc-${mi_version}")
 set(mi_sources
     src/stats.c
     src/os.c
+    src/arena.c
     src/memory.c
     src/segment.c
     src/page.c
diff --git a/src/arena.c b/src/arena.c
index 5bc3900c..bb1c1c10 100644
--- a/src/arena.c
+++ b/src/arena.c
@@ -381,7 +381,7 @@ static bool mi_arena_add(mi_arena_t* arena) {
 #include <errno.h> // ENOMEM
 
 // reserve at a specific numa node
-static int mi_reserve_huge_os_pages_at(size_t pages, int numa_node) mi_attr_noexcept {
+int mi_reserve_huge_os_pages_at(size_t pages, int numa_node) mi_attr_noexcept {
   size_t hsize = 0;
   void* p = _mi_os_alloc_huge_os_pages(pages, numa_node, &hsize);
   if (p==NULL) return ENOMEM;
@@ -432,6 +432,7 @@ int mi_reserve_huge_os_pages_interleave(size_t pages) mi_attr_noexcept {
 }
 
 int mi_reserve_huge_os_pages(size_t pages, double max_secs, size_t* pages_reserved) mi_attr_noexcept {
+  UNUSED(max_secs);
   _mi_verbose_message("mi_reserve_huge_os_pages is deprecated: use mi_reserve_huge_os_pages_interleave/at instead\n");
   if (pages_reserved != NULL) *pages_reserved = 0;
   int err = mi_reserve_huge_os_pages_interleave(pages);  
diff --git a/src/init.c b/src/init.c
index 138b54aa..0813fddd 100644
--- a/src/init.c
+++ b/src/init.c
@@ -434,7 +434,7 @@ static void mi_process_load(void) {
 
   if (mi_option_is_enabled(mi_option_reserve_huge_os_pages)) {
     size_t pages     = mi_option_get(mi_option_reserve_huge_os_pages);
-    double max_secs = (double)pages / 2.0; // 0.5s per page (1GiB)
+    // double max_secs = (double)pages / 2.0; // 0.5s per page (1GiB)
     mi_reserve_huge_os_pages_interleave(pages);
   }
 }
diff --git a/src/os.c b/src/os.c
index c0564174..2bb3ee3c 100644
--- a/src/os.c
+++ b/src/os.c
@@ -851,7 +851,7 @@ static void* mi_os_alloc_huge_os_pagesx(size_t size, int numa_node)
 static void* mi_os_alloc_huge_os_pagesx(size_t size, int numa_node) {
   mi_assert_internal(size%GiB == 0);
   bool is_large = true;
-  void* p = mi_unix_mmap(NULL, MI_HUGE_OS_PAGE_SIZE, MI_SEGMENT_SIZE, PROT_READ | PROT_WRITE, true, true, &is_large);
+  void* p = mi_unix_mmap(NULL, size, MI_SEGMENT_SIZE, PROT_READ | PROT_WRITE, true, true, &is_large);
   if (p == NULL) return NULL;
   #ifdef MI_HAS_NUMA  
   if (numa_node >= 0 && numa_node < 8*MI_INTPTR_SIZE) {
@@ -861,6 +861,8 @@ static void* mi_os_alloc_huge_os_pagesx(size_t size, int numa_node) {
       _mi_warning_message("failed to bind huge (1GiB) pages to NUMA node %d: %s\n", numa_node, strerror(errno));
     }
   }
+  #else
+  UNUSED(numa_node);
   #endif
   return p;
 }