include/asm-s390/mman.h

   1 /*
   2  *  include/asm-s390/mman.h
   3  *
   4  *  S390 version
   5  *
   6  *  Derived from "include/asm-i386/mman.h"
   7  */
   8
   9 #ifndef __S390_MMAN_H__
  10 #define __S390_MMAN_H__
  11
  12 #define PROT_READ       0x1             /* page can be read */
  13 #define PROT_WRITE      0x2             /* page can be written */
  14 #define PROT_EXEC       0x4             /* page can be executed */
  15 #define PROT_SEM        0x8             /* page may be used for atomic ops */
  16 #define PROT_NONE       0x0             /* page can not be accessed */
  17 #define PROT_GROWSDOWN  0x01000000      /* mprotect flag: extend change to start of growsdown vma */
  18 #define PROT_GROWSUP    0x02000000      /* mprotect flag: extend change to end of growsup vma */
  19
  20 #define MAP_SHARED      0x01            /* Share changes */
  21 #define MAP_PRIVATE     0x02            /* Changes are private */
  22 #define MAP_TYPE        0x0f            /* Mask for type of mapping */
  23 #define MAP_FIXED       0x10            /* Interpret addr exactly */
  24 #define MAP_ANONYMOUS   0x20            /* don't use a file */
  25
  26 #define MAP_GROWSDOWN   0x0100          /* stack-like segment */
  27 #define MAP_DENYWRITE   0x0800          /* ETXTBSY */
  28 #define MAP_EXECUTABLE  0x1000          /* mark it as an executable */
  29 #define MAP_LOCKED      0x2000          /* pages are locked */
  30 #define MAP_NORESERVE   0x4000          /* don't check for reservations */
  31 #define MAP_POPULATE    0x8000          /* populate (prefault) pagetables */
  32 #define MAP_NONBLOCK    0x10000         /* do not block on IO */
  33
  34 #define MS_ASYNC        1               /* sync memory asynchronously */
  35 #define MS_INVALIDATE   2               /* invalidate the caches */
  36 #define MS_SYNC         4               /* synchronous memory sync */
  37
  38 #define MCL_CURRENT     1               /* lock all current mappings */
  39 #define MCL_FUTURE      2               /* lock all future mappings */
  40
  41 #define MADV_NORMAL    0x0              /* default page-in behavior */
  42 #define MADV_RANDOM    0x1              /* page-in minimum required */
  43 #define MADV_SEQUENTIAL        0x2             /* read-ahead aggressively */
  44 #define MADV_WILLNEED  0x3              /* pre-fault pages */
  45 #define MADV_DONTNEED  0x4              /* discard these pages */
  46
  47 /* compatibility flags */
  48 #define MAP_ANON        MAP_ANONYMOUS
  49 #define MAP_FILE        0
  50
  51 #endif /* __S390_MMAN_H__ */