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--- src/ipc/mem/Segment.cc.orig 2015-11-01 10:44:25 UTC
+++ src/ipc/mem/Segment.cc
@@ -150,7 +150,7 @@ Ipc::Mem::Segment::attach()
assert(theSize == static_cast<off_t>(static_cast<size_t>(theSize)));
void *const p =
- mmap(NULL, theSize, PROT_READ | PROT_WRITE, MAP_SHARED, theFD, 0);
+ mmap(NULL, theSize, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_NOSYNC, theFD, 0);
if (p == MAP_FAILED) {
debugs(54, 5, HERE << "mmap " << theName << ": " << xstrerror());
fatalf("Ipc::Mem::Segment::attach failed to mmap(%s): %s\n",
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