pfSense

Since the change to the lock function in util.inc to make shared locks the default instead of exclusive locks, most locks have been effectively nonexistent (currently only the config library uses exclusive locking at all). Code that only reads and does not write can probably continue to use the shared locks, but code that does writing or is non-reentrant for any other reason should probably have the locks made exclusive (LOCK_EX).

Some places where this may need to be checked include captive portal, vouchers, and filter reload, but there may be others.