include/linux/fadvise.h

   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 */