src/share/vm/gc/parallel/mutableNUMASpace.cpp

rev 11780 : [mq]: webrev.0
rev 11781 : [mq]: webrev.1

@@ -578,14 +578,15 @@
 
   // Try small pages if the chunk size is too small
   if (base_space_size_pages / lgrp_spaces()->length() == 0
       && page_size() > (size_t)os::vm_page_size()) {
 #ifdef LINUX
-    // If we are using pin region, we cannot change the page size to default size
-    // as we could free memory which is not expected for pin region in Linux.
+    // Changing the page size below can lead to freeing of memory. When using large pages
+    // and the memory has been both reserved and committed, Linux does not support
+    // freeing parts of it. So we fail initialization.
     if (UseLargePages && !os::can_commit_large_page_memory()) {
-      vm_exit_during_initialization("Failed initializing NUMA. Too small heap size");
+      vm_exit_during_initialization("Failed initializing NUMA with large pages. Too small heap size");
     }
 #endif // LINUX
     set_page_size(os::vm_page_size());
     rounded_bottom = (HeapWord*)round_to((intptr_t) bottom(), page_size());
     rounded_end = (HeapWord*)round_down((intptr_t) end(), page_size());