From a6c302bec1d47903bfd455c0d8129cd618037672 Mon Sep 17 00:00:00 2001
From: Szabolcs Nagy <nsz@port70.net>
Date: Mon, 13 Jul 2020 19:43:44 +0000
Subject: sys/mman.h: add MREMAP_DONTUNMAP from linux v5.7
it remaps anon mappings without unmapping the original. chromeos plans
to use it with userfaultfd, see:
linux commit e346b3813067d4b17383f975f197a9aa28a3b077
mm/mremap: add MREMAP_DONTUNMAP to mremap()
---
include/sys/mman.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/sys/mman.h b/include/sys/mman.h
index 3bade727..4d603e91 100644
--- a/include/sys/mman.h
+++ b/include/sys/mman.h
@@ -101,6 +101,7 @@ extern "C" {
#ifdef _GNU_SOURCE
#define MREMAP_MAYMOVE 1
#define MREMAP_FIXED 2
+#define MREMAP_DONTUNMAP 4
#define MLOCK_ONFAULT 0x01
--
cgit v1.2.3-70-g09d2