/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _LINUX_MMAN_H
#define _LINUX_MMAN_H

#include <asm/mman.h>
#include <asm-generic/hugetlb_encode.h>
#include <linux/types.h>

#define MREMAP_MAYMOVE        1
#define MREMAP_FIXED        2
#define MREMAP_DONTUNMAP    4

#define OVERCOMMIT_GUESS        0
#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.
 * All known huge page size encodings are provided here.  It is the
 * responsibility of the application to know which sizes are supported on
 * the running system.  See mmap(2) man page for details.
 */
#define MAP_HUGE_SHIFT    HUGETLB_FLAG_ENCODE_SHIFT
#define MAP_HUGE_MASK    HUGETLB_FLAG_ENCODE_MASK

#define MAP_HUGE_16KB    HUGETLB_FLAG_ENCODE_16KB
#define MAP_HUGE_64KB    HUGETLB_FLAG_ENCODE_64KB
#define MAP_HUGE_512KB    HUGETLB_FLAG_ENCODE_512KB
#define MAP_HUGE_1MB    HUGETLB_FLAG_ENCODE_1MB
#define MAP_HUGE_2MB    HUGETLB_FLAG_ENCODE_2MB
#define MAP_HUGE_8MB    HUGETLB_FLAG_ENCODE_8MB
#define MAP_HUGE_16MB    HUGETLB_FLAG_ENCODE_16MB
#define MAP_HUGE_32MB    HUGETLB_FLAG_ENCODE_32MB
#define MAP_HUGE_256MB    HUGETLB_FLAG_ENCODE_256MB
#define MAP_HUGE_512MB    HUGETLB_FLAG_ENCODE_512MB
#define MAP_HUGE_1GB    HUGETLB_FLAG_ENCODE_1GB
#define MAP_HUGE_2GB    HUGETLB_FLAG_ENCODE_2GB
#define MAP_HUGE_16GB    HUGETLB_FLAG_ENCODE_16GB

struct cachestat_range {
    __u64 off;
    __u64 len;
};

struct cachestat {
    __u64 nr_cache;
    __u64 nr_dirty;
    __u64 nr_writeback;
    __u64 nr_evicted;
    __u64 nr_recently_evicted;
};

#endif /* _LINUX_MMAN_H */