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