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1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef FADVISE_H_INCLUDED
3 #define FADVISE_H_INCLUDED
4 
5 #define POSIX_FADV_NORMAL	0 /* No further special treatment.  */
6 #define POSIX_FADV_RANDOM	1 /* Expect random page references.  */
7 #define POSIX_FADV_SEQUENTIAL	2 /* Expect sequential page references.  */
8 #define POSIX_FADV_WILLNEED	3 /* Will need these pages.  */
9 
10 /*
11  * The advise values for POSIX_FADV_DONTNEED and POSIX_ADV_NOREUSE
12  * for s390-64 differ from the values for the rest of the world.
13  */
14 #if defined(__s390x__)
15 #define POSIX_FADV_DONTNEED	6 /* Don't need these pages.  */
16 #define POSIX_FADV_NOREUSE	7 /* Data will be accessed once.  */
17 #else
18 #define POSIX_FADV_DONTNEED	4 /* Don't need these pages.  */
19 #define POSIX_FADV_NOREUSE	5 /* Data will be accessed once.  */
20 #endif
21 
22 #endif	/* FADVISE_H_INCLUDED */
23