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arch: move common mmap flags to linux/mman.h

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Now that we have 3 mmap flags shared by all architectures,
let's move them into the common header.

This will help discourage future architectures from duplicating code.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Michael S. Tsirkin 2019-02-08 01:02:55 -05:00 • committed by Arnd Bergmann
parent 852661a869
commit 746c9398f5
6 changed files with 9 additions and 15 deletions
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4
include/uapi/linux/mman.h
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@ -12,6 +12,10 @@
#define OVERCOMMIT_ALWAYS 1
#define OVERCOMMIT_NEVER 2
#define MAP_SHARED 0x01 /* Share changes */
#define MAP_PRIVATE 0x02 /* Changes are private */
#define MAP_SHARED_VALIDATE 0x03 /* share + validate extension flags */
/*
* Huge page size encoding when MAP_HUGETLB is specified, and a huge page
* size other than the default is desired. See hugetlb_encode.h.