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-rw-r--r--util/mmap_posix.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/util/mmap_posix.cpp b/util/mmap_posix.cpp
index 836373d36bc..a5caf8cbec4 100644
--- a/util/mmap_posix.cpp
+++ b/util/mmap_posix.cpp
@@ -51,6 +51,7 @@ namespace mongo {
void* MemoryMappedFile::map(const char *filename, long &length, int options) {
// length may be updated by callee.
+ _filename = filename;
theFileAllocator().allocateAsap( filename, length );
len = length;