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Map Linux MAP_HUGE_* flags to FreeBSD alignment #7

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Map Linux MAP_HUGE_* flags to FreeBSD alignment #7

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12 changes: 12 additions & 0 deletions linuxapi/sys/mman.h
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Original file line number Diff line number Diff line change
Expand Up @@ -13,4 +13,16 @@
#define MAP_NORESERVE 0
#define MAP_GROWSDOWN 0

/*
* Linux MAP_HUGE_* encodes the huge page size in mmap flags. FreeBSD
* has no equivalent reservation; MAP_ALIGNED(n) requests 2^n alignment
* so the VM may back the mapping with superpages.
*/
#ifndef MAP_HUGE_2MB
#define MAP_HUGE_2MB MAP_ALIGNED(21)
#endif
#ifndef MAP_HUGE_1GB
#define MAP_HUGE_1GB MAP_ALIGNED(30)
#endif

#endif
3 changes: 3 additions & 0 deletions tests/smoketest.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,9 @@
#if !defined(MADV_DOFORK) || !defined(MAP_LOCKED)
#error linuxapi include failure
#endif
#if !defined(MAP_HUGETLB) || !defined(MAP_HUGE_1GB) || !defined(MAP_HUGE_2MB)
#error linuxapi include failure
#endif

#include <sys/sendfile.h>

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