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Message-ID: <9a4c4131e5086e59b7604b5bde6bda70a5f848b2.1458390390.git.nsz@port70.net>
Date: Sat, 19 Mar 2016 13:37:37 +0100
From: Szabolcs Nagy <nsz@...t70.net>
To: musl@...ts.openwall.com
Subject: [PATCH 6/6] add MADV_FREE madvise command from linux v4.5
allows the os to free the marked pages lazily on memory pressure.
expected to increase malloc performance.
new in linux commit 854e9ed09dedf0c19ac8640e91bcc74bc3f9e5c9
---
include/sys/mman.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/sys/mman.h b/include/sys/mman.h
index 596a03a..8a5149c 100644
--- a/include/sys/mman.h
+++ b/include/sys/mman.h
@@ -62,6 +62,7 @@ extern "C" {
#define MADV_SEQUENTIAL 2
#define MADV_WILLNEED 3
#define MADV_DONTNEED 4
+#define MADV_FREE 8
#define MADV_REMOVE 9
#define MADV_DONTFORK 10
#define MADV_DOFORK 11
--
2.7.2
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