| 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. |