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sys/mman.h: add MREMAP_DONTUNMAP from linux v5.7

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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()
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Szabolcs Nagy 2020-07-13 19:43:44 +00:00 • committed by Rich Felker
parent 8adf42f7c1
commit a6c302bec1
1 changed files with 1 additions and 0 deletions
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include/sys/mman.h
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@ -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