linux/fs/fscache/Kconfig

# SPDX-License-Identifier: GPL-2.0-only

config FSCACHE
	tristate "General filesystem local caching manager"
	select 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.

config FSCACHE_DEBUG
	bool "Debug FS-Cache"
	depends on FSCACHE
	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/modules/fscache/parameter/debug.

	  See Documentation/filesystems/caching/fscache.rst for more information.

config FSCACHE_OLD_API
	bool
treewide: Add SPDX license identifier - Makefile/Kconfig Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2019-05-19 15:07:45 +03:00			`# SPDX-License-Identifier: GPL-2.0-only`
FS-Cache: Add main configuration option, module entry points and debugging Add the main configuration option, allowing FS-Cache to be selected; the module entry and exit functions and the debugging stuff used by these patches. The two configuration options added are: CONFIG_FSCACHE CONFIG_FSCACHE_DEBUG The first enables the facility, and the second makes the debugging statements enableable through the "debug" module parameter. The value of this parameter is a bitmask as described in: Documentation/filesystems/caching/fscache.txt The module can be loaded at this point, but all it will do at this point in the patch series is to start up the slow work facility and shut it down again. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Steve Dickson <steved@redhat.com> Acked-by: Trond Myklebust <Trond.Myklebust@netapp.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Tested-by: Daire Byrne <Daire.Byrne@framestore.com> 2009-04-03 19:42:36 +04:00
fscache: Introduce new driver Introduce basic skeleton of the new, rewritten fscache driver. Changes ======= ver #3: - Use remove_proc_subtree(), not remove_proc_entry() to remove a populated dir. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/163819584034.215744.4290533472390439030.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/163906887770.143852.3577888294989185666.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/163967080039.1823006.5702921801104057922.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/164021491014.640689.4292699878317589512.stgit@warthog.procyon.org.uk/ # v4 2021-10-20 16:34:41 +03:00			`config FSCACHE`
			`tristate "General filesystem local caching manager"`
			`select 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.`

			`config FSCACHE_DEBUG`
			`bool "Debug FS-Cache"`
			`depends on FSCACHE`
			`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/modules/fscache/parameter/debug.`

			`See Documentation/filesystems/caching/fscache.rst for more information.`

fscache, cachefiles: Disable configuration Disable fscache and cachefiles in Kconfig whilst it is rewritten. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/163819576672.215744.12444272479560406780.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/163906882835.143852.11073015983885872901.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/163967075113.1823006.277316290062782998.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/164021481179.640689.2004199594774033658.stgit@warthog.procyon.org.uk/ # v4 2021-10-25 23:41:26 +03:00			`config FSCACHE_OLD_API`
			`bool`