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 11 #define OVERCOMMIT_GUESS 0 12 #define OVERCOMMIT_ALWAYS 1 13 #define OVERCOMMIT_NEVER 2 14 15 #define MAP_SHARED 0x01 /* Share changes */ 16 #define MAP_PRIVATE 0x02 /* Changes are private */ 17 #define MAP_SHARED_VALIDATE 0x03 /* share + validate extension flags */ 18 19 /* 20 * Huge page size encoding when MAP_HUGETLB is specified, and a huge page 21 * size other than the default is desired. See hugetlb_encode.h. 22 * All known huge page size encodings are provided here. It is the 23 * responsibility of the application to know which sizes are supported on 24 * the running system. See mmap(2) man page for details. 25 */ 26 #define MAP_HUGE_SHIFT HUGETLB_FLAG_ENCODE_SHIFT 27 #define MAP_HUGE_MASK HUGETLB_FLAG_ENCODE_MASK 28 29 #define MAP_HUGE_64KB HUGETLB_FLAG_ENCODE_64KB 30 #define MAP_HUGE_512KB HUGETLB_FLAG_ENCODE_512KB 31 #define MAP_HUGE_1MB HUGETLB_FLAG_ENCODE_1MB 32 #define MAP_HUGE_2MB HUGETLB_FLAG_ENCODE_2MB 33 #define MAP_HUGE_8MB HUGETLB_FLAG_ENCODE_8MB 34 #define MAP_HUGE_16MB HUGETLB_FLAG_ENCODE_16MB 35 #define MAP_HUGE_32MB HUGETLB_FLAG_ENCODE_32MB 36 #define MAP_HUGE_256MB HUGETLB_FLAG_ENCODE_256MB 37 #define MAP_HUGE_512MB HUGETLB_FLAG_ENCODE_512MB 38 #define MAP_HUGE_1GB HUGETLB_FLAG_ENCODE_1GB 39 #define MAP_HUGE_2GB HUGETLB_FLAG_ENCODE_2GB 40 #define MAP_HUGE_16GB HUGETLB_FLAG_ENCODE_16GB 41 42 #endif /* _LINUX_MMAN_H */ 43