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-rw-r--r--modules/alloc_mmap/mmap_mem.cpp8
1 files changed, 7 insertions, 1 deletions
diff --git a/modules/alloc_mmap/mmap_mem.cpp b/modules/alloc_mmap/mmap_mem.cpp
index 5955f9e22..e22c2dac5 100644
--- a/modules/alloc_mmap/mmap_mem.cpp
+++ b/modules/alloc_mmap/mmap_mem.cpp
@@ -87,7 +87,13 @@ void* MemoryMapping_Allocator::alloc_block(u32bit n)
if(::write(file.get_fd(), "\0", 1) != 1)
throw MemoryMapping_Failed("Could not write to file");
- void* ptr = ::mmap(0, n, PROT_READ | PROT_WRITE, MAP_SHARED,
+ int flags = MAP_SHARED;
+
+#ifdef MAP_NOSYNC
+ flags |= MAP_NOSYNC;
+#endif
+
+ void* ptr = ::mmap(0, n, PROT_READ | PROT_WRITE, flags,
file.get_fd(), 0);
if(ptr == static_cast<void*>(MAP_FAILED))