1# SPDX-License-Identifier: GPL-2.0-only 2 3config NETFS_SUPPORT 4 tristate 5 help 6 This option enables support for network filesystems, including 7 helpers for high-level buffered I/O, abstracting out read 8 segmentation, local caching and transparent huge page support. 9 10config NETFS_STATS 11 bool "Gather statistical information on local caching" 12 depends on NETFS_SUPPORT && PROC_FS 13 help 14 This option causes statistical information to be gathered on local 15 caching and exported through file: 16 17 /proc/fs/fscache/stats 18 19 The gathering of statistics adds a certain amount of overhead to 20 execution as there are a quite a few stats gathered, and on a 21 multi-CPU system these may be on cachelines that keep bouncing 22 between CPUs. On the other hand, the stats are very useful for 23 debugging purposes. Saying 'Y' here is recommended. 24 25config FSCACHE 26 bool "General filesystem local caching manager" 27 depends on NETFS_SUPPORT 28 help 29 This option enables a generic filesystem caching manager that can be 30 used by various network and other filesystems to cache data locally. 31 Different sorts of caches can be plugged in, depending on the 32 resources available. 33 34 See Documentation/filesystems/caching/fscache.rst for more information. 35 36config FSCACHE_STATS 37 bool "Gather statistical information on local caching" 38 depends on FSCACHE && PROC_FS 39 select NETFS_STATS 40 help 41 This option causes statistical information to be gathered on local 42 caching and exported through file: 43 44 /proc/fs/fscache/stats 45 46 The gathering of statistics adds a certain amount of overhead to 47 execution as there are a quite a few stats gathered, and on a 48 multi-CPU system these may be on cachelines that keep bouncing 49 between CPUs. On the other hand, the stats are very useful for 50 debugging purposes. Saying 'Y' here is recommended. 51 52 See Documentation/filesystems/caching/fscache.rst for more information. 53 54config FSCACHE_DEBUG 55 bool "Debug FS-Cache" 56 depends on FSCACHE 57 help 58 This permits debugging to be dynamically enabled in the local caching 59 management module. If this is set, the debugging output may be 60 enabled by setting bits in /sys/modules/fscache/parameter/debug. 61 62 See Documentation/filesystems/caching/fscache.rst for more information. 63