comments

1 files changed, 2 insertions, 2 deletions

diff --git a/db/mongommf.cpp b/db/mongommf.cpp
index 3349aead6ed..74899c85fbf 100644
--- a/db/mongommf.cpp
+++ b/db/mongommf.cpp
@@ -174,9 +174,9 @@ namespace mongo {
     }
 
     void* MemoryMappedFile::remapPrivateView(void *oldPrivateAddr) {
-        // the mutex is to assure we get the same address on the remap
-        dbMutex.assertWriteLocked();
+        dbMutex.assertWriteLocked(); // short window where we are unmapped so must be exclusive
 
+        // the mapViewMutex is to assure we get the same address on the remap
         scoped_lock lk(mapViewMutex);
 
         clearWritableBits(oldPrivateAddr);