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nixpkgs/pkgs/development/compilers/ghc/ghc-no-madv-free.patch
2016-09-01 12:07:36 -05:00

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diff --git a/rts/posix/OSMem.c b/rts/posix/OSMem.c
index 99620ee..e052a84 100644
--- a/rts/posix/OSMem.c
+++ b/rts/posix/OSMem.c
@@ -523,13 +523,7 @@ void osDecommitMemory(void *at, W_ size)
sysErrorBelch("unable to make released memory unaccessible");
#endif
-#ifdef MADV_FREE
- // Try MADV_FREE first, FreeBSD has both and MADV_DONTNEED
- // just swaps memory out
- r = madvise(at, size, MADV_FREE);
-#else
r = madvise(at, size, MADV_DONTNEED);
-#endif
if(r < 0)
sysErrorBelch("unable to decommit memory");
}