Provide error injection for cachefiles

configname: CONFIG_CACHEFILES_ERROR_INJECTION

Linux Kernel Configuration
└─>File systems
└─>Caches
└─>Provide error injection for cachefiles
In linux kernel since version 5.2 (release Date: 2019-07-07)
This permits error injection to be enabled in cachefiles whilst a
cache is in service.
depends
CONFIG_CACHEFILES
CONFIG_SYSCTL