config CACHEFILES
  	tristate "Filesystem caching on files"
  	depends on FSCACHE && BLOCK
  	help
  	  This permits use of a mounted filesystem as a cache for other
  	  filesystems - primarily networking filesystems - thus allowing fast
  	  local disk to enhance the speed of slower devices.
  
  	  See Documentation/filesystems/caching/cachefiles.txt for more
  	  information.
  
  config CACHEFILES_DEBUG
  	bool "Debug CacheFiles"
  	depends on CACHEFILES
  	help
  	  This permits debugging to be dynamically enabled in the filesystem
  	  caching on files module.  If this is set, the debugging output may be
  	  enabled by setting bits in /sys/modules/cachefiles/parameter/debug or
  	  by including a debugging specifier in /etc/cachefilesd.conf.
  
  config CACHEFILES_HISTOGRAM
  	bool "Gather latency information on CacheFiles"
  	depends on CACHEFILES && PROC_FS
  	help
  
  	  This option causes latency information to be gathered on CacheFiles
  	  operation and exported through file:
  
  		/proc/fs/cachefiles/histogram
  
  	  The generation of this histogram adds a certain amount of overhead to
  	  execution as there are a number of points at which data is gathered,
  	  and on a multi-CPU system these may be on cachelines that keep
  	  bouncing between CPUs.  On the other hand, the histogram may be
  	  useful for debugging purposes.  Saying 'N' here is recommended.
  
  	  See Documentation/filesystems/caching/cachefiles.txt for more
  	  information.