1 files changed, 0 insertions, 63 deletions
diff --git a/community/ghc/0006-fix-madvise.patch b/community/ghc/0006-fix-madvise.patch
deleted file mode 100644
index 0672001722..0000000000
--- a/community/ghc/0006-fix-madvise.patch
+++ /dev/null
@@ -1,63 +0,0 @@
-From 6576bf83cdf4eac05eb88a24aa934a736c91e3da Mon Sep 17 00:00:00 2001
-From: Ben Gamari <bgamari.foss@gmail.com>
-Date: Thu, 1 Dec 2016 12:55:23 -0500
-Subject: [PATCH] rts: Ensure we always give MADV_DONTNEED a chance in
- osDecommitMemory
-
-As described in #12865, newer Linux kernels support both MADV_FREE and
-MADV_DONTNEED. Previously a runtime would fail to try MADV_DONTNEED if
-MADV_FREE failed (e.g. since the kernel which the image is running on
-doesn't support the latter). Now we try MADV_DONTNEED if MADV_FREE
-failed to ensure that binaries compiled on a kernel supporting MADV_FREE
-don't fail on decommit.
-
-Test Plan: Validate
-
-Reviewers: austin, erikd, simonmar
-
-Reviewed By: simonmar
-
-Subscribers: thomie
-
-Differential Revision: https://phabricator.haskell.org/D2780
-
-GHC Trac Issues: #12865
----
- rts/posix/OSMem.c | 19 ++++++++++++++++---
- 1 file changed, 16 insertions(+), 3 deletions(-)
-
-diff --git a/rts/posix/OSMem.c b/rts/posix/OSMem.c
-index 5291745..beffeda 100644
---- a/rts/posix/OSMem.c
-+++ b/rts/posix/OSMem.c
-@@ -541,11 +541,24 @@ void osDecommitMemory(void *at, W_ size)
- 
- #ifdef MADV_FREE
-     // Try MADV_FREE first, FreeBSD has both and MADV_DONTNEED
--    // just swaps memory out
-+    // just swaps memory out. Linux >= 4.5 has both DONTNEED and FREE; either
-+    // will work as they both allow the system to free anonymous pages.
-+    // It is important that we try both methods as the kernel which we were
-+    // built on may differ from the kernel we are now running on.
-     r = madvise(at, size, MADV_FREE);
--#else
--    r = madvise(at, size, MADV_DONTNEED);
-+    if(r < 0) {
-+        if (errno == EINVAL) {
-+            // Perhaps the system doesn't support MADV_FREE; fall-through and
-+            // try MADV_DONTNEED.
-+        } else {
-+            sysErrorBelch("unable to decommit memory");
-+        }
-+    } else {
-+        return;
-+    }
- #endif
-+
-+    r = madvise(at, size, MADV_DONTNEED);
-     if(r < 0)
-         sysErrorBelch("unable to decommit memory");
- }
--- 
-1.9.1
-