$NetBSD$

* Part of patchset to build electron on NetBSD
* Based on OpenBSD's chromium patches, and
  FreeBSD's electron patches

--- base/memory/madv_free_discardable_memory_posix.cc.orig	2025-02-24 19:59:26.000000000 +0000
+++ base/memory/madv_free_discardable_memory_posix.cc
@@ -310,6 +310,10 @@ void MadvFreeDiscardableMemoryPosix::Set
 
 bool MadvFreeDiscardableMemoryPosix::IsResident() const {
   DFAKE_SCOPED_RECURSIVE_LOCK(thread_collision_warner_);
+// XXX mincore
+#if BUILDFLAG(IS_BSD)
+  return false;
+#else
 #if BUILDFLAG(IS_APPLE)
   std::vector<char> vec(allocated_pages_);
 #else
@@ -325,6 +329,7 @@ bool MadvFreeDiscardableMemoryPosix::IsR
       return false;
   }
   return true;
+#endif
 }
 
 bool MadvFreeDiscardableMemoryPosix::IsDiscarded() const {