sys/mman.h: add MREMAP_DONTUNMAP from linux v5.7 · a6c302bec1 - Gogs

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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()

Szabolcs Nagy %!s(int64=4) %!d(string=hai) anos

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a6c302bec1

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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