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 NETFS_PGPRIV2 26 bool 27 28config NETFS_DEBUG 29 bool "Enable dynamic debugging netfslib and FS-Cache" 30 depends on NETFS_SUPPORT 31 help 32 This permits debugging to be dynamically enabled in the local caching 33 management module. If this is set, the debugging output may be 34 enabled by setting bits in /sys/module/netfs/parameters/debug. 35 36config FSCACHE 37 bool "General filesystem local caching manager" 38 depends on NETFS_SUPPORT 39 help 40 This option enables a generic filesystem caching manager that can be 41 used by various network and other filesystems to cache data locally. 42 Different sorts of caches can be plugged in, depending on the 43 resources available. 44 45 See Documentation/filesystems/caching/fscache.rst for more information. 46 47config FSCACHE_STATS 48 bool "Gather statistical information on local caching" 49 depends on FSCACHE && PROC_FS 50 select NETFS_STATS 51 help 52 This option causes statistical information to be gathered on local 53 caching and exported through file: 54 55 /proc/fs/fscache/stats 56 57 The gathering of statistics adds a certain amount of overhead to 58 execution as there are a quite a few stats gathered, and on a 59 multi-CPU system these may be on cachelines that keep bouncing 60 between CPUs. On the other hand, the stats are very useful for 61 debugging purposes. Saying 'Y' here is recommended. 62 63 See Documentation/filesystems/caching/fscache.rst for more information. 64