use mmap

This global parameter determines if the tdb internals of Samba can
depend on mmap working correctly on the running system. Samba requires a coherent
mmap/read-write system memory cache. Currently only OpenBSD and HPUX do not have such a
coherent cache, and on those platforms this paramter is overridden internally
to be effeceively no. On all systems this parameter should be left alone. This
parameter is provided to help the Samba developers track down problems with
the tdb internal code.

use mmap

Registry Hive	HKEY_LOCAL_MACHINE
Registry Path	Software\Policies\Samba\smb_conf\use mmap
Value Name	use mmap
Value Type	REG_DWORD
Default Value	1
True Value	1
False Value	0