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 */