fadvise.h (842B)
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 */