|  | # SPDX-License-Identifier: GPL-2.0-only | 
|  |  | 
|  | config NETFS_SUPPORT | 
|  | tristate | 
|  | help | 
|  | This option enables support for network filesystems, including | 
|  | helpers for high-level buffered I/O, abstracting out read | 
|  | segmentation, local caching and transparent huge page support. | 
|  |  | 
|  | config NETFS_STATS | 
|  | bool "Gather statistical information on local caching" | 
|  | depends on NETFS_SUPPORT && PROC_FS | 
|  | help | 
|  | This option causes statistical information to be gathered on local | 
|  | caching and exported through file: | 
|  |  | 
|  | /proc/fs/fscache/stats | 
|  |  | 
|  | The gathering of statistics adds a certain amount of overhead to | 
|  | execution as there are a quite a few stats gathered, and on a | 
|  | multi-CPU system these may be on cachelines that keep bouncing | 
|  | between CPUs.  On the other hand, the stats are very useful for | 
|  | debugging purposes.  Saying 'Y' here is recommended. | 
|  |  | 
|  | config NETFS_DEBUG | 
|  | bool "Enable dynamic debugging netfslib and FS-Cache" | 
|  | depends on NETFS_SUPPORT | 
|  | help | 
|  | This permits debugging to be dynamically enabled in the local caching | 
|  | management module.  If this is set, the debugging output may be | 
|  | enabled by setting bits in /sys/module/netfs/parameters/debug. | 
|  |  | 
|  | config FSCACHE | 
|  | bool "General filesystem local caching manager" | 
|  | depends on NETFS_SUPPORT | 
|  | help | 
|  | This option enables a generic filesystem caching manager that can be | 
|  | used by various network and other filesystems to cache data locally. | 
|  | Different sorts of caches can be plugged in, depending on the | 
|  | resources available. | 
|  |  | 
|  | See Documentation/filesystems/caching/fscache.rst for more information. | 
|  |  | 
|  | config FSCACHE_STATS | 
|  | bool "Gather statistical information on local caching" | 
|  | depends on FSCACHE && PROC_FS | 
|  | select NETFS_STATS | 
|  | help | 
|  | This option causes statistical information to be gathered on local | 
|  | caching and exported through file: | 
|  |  | 
|  | /proc/fs/fscache/stats | 
|  |  | 
|  | The gathering of statistics adds a certain amount of overhead to | 
|  | execution as there are a quite a few stats gathered, and on a | 
|  | multi-CPU system these may be on cachelines that keep bouncing | 
|  | between CPUs.  On the other hand, the stats are very useful for | 
|  | debugging purposes.  Saying 'Y' here is recommended. | 
|  |  | 
|  | See Documentation/filesystems/caching/fscache.rst for more information. |