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authorSzabolcs Nagy <nsz@port70.net>2020-07-13 19:43:44 +0000
committerRich Felker <dalias@aerifal.cx>2020-09-09 17:20:54 -0400
commita6c302bec1d47903bfd455c0d8129cd618037672 (patch)
treef2b3d8484bf45919c5d42bc3c1926ff9651393c9 /include
parent8adf42f7c13c2c569b35521db2615844ddd5a4a9 (diff)
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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()
Diffstat (limited to 'include')
-rw-r--r--include/sys/mman.h1
1 files changed, 1 insertions, 0 deletions
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