1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 2#ifndef _UAPI_LINUX_MMAN_H
 3#define _UAPI_LINUX_MMAN_H
 4
 5#include <asm/mman.h>
 6#include <asm-generic/hugetlb_encode.h>
 7
 8#define MREMAP_MAYMOVE		1
 9#define MREMAP_FIXED		2
10#define MREMAP_DONTUNMAP	4
11
12#define OVERCOMMIT_GUESS		0
13#define OVERCOMMIT_ALWAYS		1
14#define OVERCOMMIT_NEVER		2
15
16#define MAP_SHARED	0x01		/* Share changes */
17#define MAP_PRIVATE	0x02		/* Changes are private */
18#define MAP_SHARED_VALIDATE 0x03	/* share + validate extension flags */
19
20/*
21 * Huge page size encoding when MAP_HUGETLB is specified, and a huge page
22 * size other than the default is desired.  See hugetlb_encode.h.
23 * All known huge page size encodings are provided here.  It is the
24 * responsibility of the application to know which sizes are supported on
25 * the running system.  See mmap(2) man page for details.
26 */
27#define MAP_HUGE_SHIFT	HUGETLB_FLAG_ENCODE_SHIFT
28#define MAP_HUGE_MASK	HUGETLB_FLAG_ENCODE_MASK
29
30#define MAP_HUGE_16KB	HUGETLB_FLAG_ENCODE_16KB
31#define MAP_HUGE_64KB	HUGETLB_FLAG_ENCODE_64KB
32#define MAP_HUGE_512KB	HUGETLB_FLAG_ENCODE_512KB
33#define MAP_HUGE_1MB	HUGETLB_FLAG_ENCODE_1MB
34#define MAP_HUGE_2MB	HUGETLB_FLAG_ENCODE_2MB
35#define MAP_HUGE_8MB	HUGETLB_FLAG_ENCODE_8MB
36#define MAP_HUGE_16MB	HUGETLB_FLAG_ENCODE_16MB
37#define MAP_HUGE_32MB	HUGETLB_FLAG_ENCODE_32MB
38#define MAP_HUGE_256MB	HUGETLB_FLAG_ENCODE_256MB
39#define MAP_HUGE_512MB	HUGETLB_FLAG_ENCODE_512MB
40#define MAP_HUGE_1GB	HUGETLB_FLAG_ENCODE_1GB
41#define MAP_HUGE_2GB	HUGETLB_FLAG_ENCODE_2GB
42#define MAP_HUGE_16GB	HUGETLB_FLAG_ENCODE_16GB
43
44#endif /* _UAPI_LINUX_MMAN_H */