1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2*4882a593Smuzhiyun #ifndef FADVISE_H_INCLUDED 3*4882a593Smuzhiyun #define FADVISE_H_INCLUDED 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #define POSIX_FADV_NORMAL 0 /* No further special treatment. */ 6*4882a593Smuzhiyun #define POSIX_FADV_RANDOM 1 /* Expect random page references. */ 7*4882a593Smuzhiyun #define POSIX_FADV_SEQUENTIAL 2 /* Expect sequential page references. */ 8*4882a593Smuzhiyun #define POSIX_FADV_WILLNEED 3 /* Will need these pages. */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun /* 11*4882a593Smuzhiyun * The advise values for POSIX_FADV_DONTNEED and POSIX_ADV_NOREUSE 12*4882a593Smuzhiyun * for s390-64 differ from the values for the rest of the world. 13*4882a593Smuzhiyun */ 14*4882a593Smuzhiyun #if defined(__s390x__) 15*4882a593Smuzhiyun #define POSIX_FADV_DONTNEED 6 /* Don't need these pages. */ 16*4882a593Smuzhiyun #define POSIX_FADV_NOREUSE 7 /* Data will be accessed once. */ 17*4882a593Smuzhiyun #else 18*4882a593Smuzhiyun #define POSIX_FADV_DONTNEED 4 /* Don't need these pages. */ 19*4882a593Smuzhiyun #define POSIX_FADV_NOREUSE 5 /* Data will be accessed once. */ 20*4882a593Smuzhiyun #endif 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun #endif /* FADVISE_H_INCLUDED */ 23