1 # SPDX-License-Identifier: GPL-2.0-only 2 3 config 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 10 config 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 25 config NETFS_DEBUG 26 bool "Enable dynamic debugging netfslib and FS-Cache" 27 depends on NETFS 28 help 29 This permits debugging to be dynamically enabled in the local caching 30 management module. If this is set, the debugging output may be 31 enabled by setting bits in /sys/module/netfs/parameters/debug. 32 33 config FSCACHE 34 bool "General filesystem local caching manager" 35 depends on NETFS_SUPPORT 36 help 37 This option enables a generic filesystem caching manager that can be 38 used by various network and other filesystems to cache data locally. 39 Different sorts of caches can be plugged in, depending on the 40 resources available. 41 42 See Documentation/filesystems/caching/fscache.rst for more information. 43 44 config FSCACHE_STATS 45 bool "Gather statistical information on local caching" 46 depends on FSCACHE && PROC_FS 47 select NETFS_STATS 48 help 49 This option causes statistical information to be gathered on local 50 caching and exported through file: 51 52 /proc/fs/fscache/stats 53 54 The gathering of statistics adds a certain amount of overhead to 55 execution as there are a quite a few stats gathered, and on a 56 multi-CPU system these may be on cachelines that keep bouncing 57 between CPUs. On the other hand, the stats are very useful for 58 debugging purposes. Saying 'Y' here is recommended. 59 60 See Documentation/filesystems/caching/fscache.rst for more information. 61