projects / musl / commitdiff
? search:
summary | shortlog | log | commit | commitdiff | tree
raw | patch | inline | side by side (parent: 8adf42f)
sys/mman.h: add MREMAP_DONTUNMAP from linux v5.7
authorSzabolcs Nagy <nsz@port70.net>
Mon, 13 Jul 2020 19:43:44 +0000 (19:43 +0000)
committerRich Felker <dalias@aerifal.cx>
Wed, 9 Sep 2020 21:20:54 +0000 (17:20 -0400)
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 patch | blob | history

diff --git a/include/sys/mman.h b/include/sys/mman.h
index 3bade72..4d603e9 100644 (file)
--- 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
 
musl