linux-headers (unknown)
1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef _LINUX_MMAN_H
3 #define _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 /* _LINUX_MMAN_H */
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