From 8d405928217c529dc48673cc8b29000ea2a24452 Mon Sep 17 00:00:00 2001
From: Hamish Morrison <hamish@lavabit.com>
Date: Mon, 26 Mar 2012 05:37:20 +0000
Subject: [PATCH] mmap should try to honour the address hint

---
 src/system/libroot/posix/sys/mman.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/system/libroot/posix/sys/mman.cpp b/src/system/libroot/posix/sys/mman.cpp
index a936840742..17866ee9ed 100644
--- a/src/system/libroot/posix/sys/mman.cpp
+++ b/src/system/libroot/posix/sys/mman.cpp
@@ -113,7 +113,7 @@ mmap(void* address, size_t length, int protection, int flags, int fd,
 	int mapping = (flags & MAP_SHARED) != 0
 		? REGION_NO_PRIVATE_MAP : REGION_PRIVATE_MAP;
 
-	uint32 addressSpec = B_ANY_ADDRESS;
+	uint32 addressSpec = address == NULL ? B_ANY_ADDRESS : B_BASE_ADDRESS;
 	if ((flags & MAP_FIXED) != 0)
 		addressSpec = B_EXACT_ADDRESS;