Index: src/os_unix.c
==================================================================
--- src/os_unix.c
+++ src/os_unix.c
@@ -5198,11 +5198,11 @@
   unixShmMap                /* xShmMap method */
 )
 IOMETHODS(
   nolockIoFinder,           /* Finder function name */
   nolockIoMethods,          /* sqlite3_io_methods object name */
-  3,                        /* shared memory is disabled */
+  3,                        /* shared memory and mmap are enabled */
   nolockClose,              /* xClose method */
   nolockLock,               /* xLock method */
   nolockUnlock,             /* xUnlock method */
   nolockCheckReservedLock,  /* xCheckReservedLock method */
   0                         /* xShmMap method */