From b4bb986c8aec70965cb7f3f6f35368c21ac4e466 Mon Sep 17 00:00:00 2001
From: MBaesken <matthias.baesken@sap.com>
Date: Thu, 5 Jun 2025 09:46:22 +0200
Subject: [PATCH] JDK-8357570

---
 src/hotspot/os/bsd/os_bsd.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/hotspot/os/bsd/os_bsd.cpp b/src/hotspot/os/bsd/os_bsd.cpp
index 3535d027dbcde..868725fdb6715 100644
--- a/src/hotspot/os/bsd/os_bsd.cpp
+++ b/src/hotspot/os/bsd/os_bsd.cpp
@@ -154,7 +154,8 @@ julong os::Bsd::available_memory() {
   assert(kerr == KERN_SUCCESS,
          "host_statistics64 failed - check mach_host_self() and count");
   if (kerr == KERN_SUCCESS) {
-    available = vmstat.free_count * os::vm_page_size();
+    // free_count is just a lowerbound, other page categories can be freed too and make memory available
+    available = (vmstat.free_count + vmstat.inactive_count + vmstat.purgeable_count) * os::vm_page_size();
   }
 #endif
   return available;