aboutsummaryrefslogtreecommitdiff
path: root/include/linux/fadvise.h
blob: b2913bba35d87dafbb042b086face216609cb107 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
#ifndef FADVISE_H_INCLUDED
#define FADVISE_H_INCLUDED

#define POSIX_FADV_NORMAL	0 /* No further special treatment.  */
#define POSIX_FADV_RANDOM	1 /* Expect random page references.  */
#define POSIX_FADV_SEQUENTIAL	2 /* Expect sequential page references.  */
#define POSIX_FADV_WILLNEED	3 /* Will need these pages.  */

/*
 * The advise values for POSIX_FADV_DONTNEED and POSIX_ADV_NOREUSE
 * for s390-64 differ from the values for the rest of the world.
 */
#if defined(__s390x__)
#define POSIX_FADV_DONTNEED	6 /* Don't need these pages.  */
#define POSIX_FADV_NOREUSE	7 /* Data will be accessed once.  */
#else
#define POSIX_FADV_DONTNEED	4 /* Don't need these pages.  */
#define POSIX_FADV_NOREUSE	5 /* Data will be accessed once.  */
#endif

/*
 * Linux-specific fadvise() extensions:
 */
#define LINUX_FADV_ASYNC_WRITE	32	/* Start writeout on range */
#define LINUX_FADV_WRITE_WAIT	33	/* Wait upon writeout to range */

#endif	/* FADVISE_H_INCLUDED */