The cache is configured by a script in /etc/cachefilesd.conf. These commands set up cache ready for use. The following script commands are available:
brun
The commands beginning with a 'b' are file space (block) limits, those
beginning with an 'f' are file count limits.
dir
tag
debug
== =================================================
1 Turn on trace of function entry (_enter() macros)
2 Turn on trace of function exit (_leave() macros)
4 Turn on trace of internal debug points (_debug())
== =================================================
This mask can also be set through sysfs, eg::
echo 5 > /sys/module/cachefiles/parameters/debug