WSL2-Linux-Kernel/fs/f2fs/Kconfig

config F2FS_FS
	tristate "F2FS filesystem support (EXPERIMENTAL)"
	depends on BLOCK
	help
	  F2FS is based on Log-structured File System (LFS), which supports
	  versatile "flash-friendly" features. The design has been focused on
	  addressing the fundamental issues in LFS, which are snowball effect
	  of wandering tree and high cleaning overhead.

	  Since flash-based storages show different characteristics according to
	  the internal geometry or flash memory management schemes aka FTL, F2FS
	  and tools support various parameters not only for configuring on-disk
	  layout, but also for selecting allocation and cleaning algorithms.

	  If unsure, say N.

config F2FS_STAT_FS
	bool "F2FS Status Information"
	depends on F2FS_FS && DEBUG_FS
	default y
	help
	  /sys/kernel/debug/f2fs/ contains information about all the partitions
	  mounted as f2fs. Each file shows the whole f2fs information.

	  /sys/kernel/debug/f2fs/status includes:
	    - major file system information managed by f2fs currently
	    - average SIT information about whole segments
	    - current memory footprint consumed by f2fs.

config F2FS_FS_XATTR
	bool "F2FS extended attributes"
	depends on F2FS_FS
	default y
	help
	  Extended attributes are name:value pairs associated with inodes by
	  the kernel or by users (see the attr(5) manual page, or visit
	  <http://acl.bestbits.at/> for details).

	  If unsure, say N.

config F2FS_FS_POSIX_ACL
	bool "F2FS Access Control Lists"
	depends on F2FS_FS_XATTR
	select FS_POSIX_ACL
	default y
	help
	  Posix Access Control Lists (ACLs) support permissions for users and
	  gourps beyond the owner/group/world scheme.

	  To learn more about Access Control Lists, visit the POSIX ACLs for
	  Linux website <http://acl.bestbits.at/>.

	  If you don't know what Access Control Lists are, say N

config F2FS_FS_SECURITY
	bool "F2FS Security Labels"
	depends on F2FS_FS_XATTR
	help
	  Security labels provide an access control facility to support Linux
	  Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO
	  Linux. This option enables an extended attribute handler for file
	  security labels in the f2fs filesystem, so that it requires enabling
	  the extended attribute support in advance.

	  If you are not using a security module, say N.

config F2FS_CHECK_FS
	bool "F2FS consistency checking feature"
	depends on F2FS_FS
	help
	  Enables BUG_ONs which check the file system consistency in runtime.

	  If you want to improve the performance, say N.
f2fs: update Kconfig and Makefile This adds Makefile and Kconfig for f2fs, and updates Makefile and Kconfig files in the fs directory. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> 2012-11-02 12:25:27 +04:00			`config F2FS_FS`
			`tristate "F2FS filesystem support (EXPERIMENTAL)"`
f2fs: resolve build failures There exist two build failures reported by Randy Dunlap as follows. (on i386) a. (config-r8857) ERROR: "f2fs_xattr_advise_handler" [fs/f2fs/f2fs.ko] undefined! Key configs in (config-r8857) are as follows. CONFIG_F2FS_FS=m # CONFIG_F2FS_STAT_FS is not set CONFIG_F2FS_FS_XATTR=y # CONFIG_F2FS_FS_POSIX_ACL is not set The error was occurred due to the function location that we made a mistake. Recently we added a new functionality for users to indicate cold files explicitly through xattr operations (i.e., f2fs_xattr_advise_handler). This handler should have been added in xattr.c instead of acl.c in order to avoid an undefined operation like in this case where XATTR is set and ACL is not set. b. (config-r8855) fs/f2fs/file.c: In function 'f2fs_vm_page_mkwrite': fs/f2fs/file.c:97:2: error: implicit declaration of function 'block_page_mkwrite_return' Key config in (config-r8855) is CONFIG_BLOCK. Obviously, f2fs works on top of the block device so that we should consider carefully a sort of config dependencies. The reason why this error was occurred was that f2fs_vm_page_mkwrite() calls block_page_mkwrite_return() which is enalbed only if CONFIG_BLOCK is set. Reported-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net> 2012-11-30 12:32:08 +04:00			`depends on BLOCK`
f2fs: update Kconfig and Makefile This adds Makefile and Kconfig for f2fs, and updates Makefile and Kconfig files in the fs directory. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> 2012-11-02 12:25:27 +04:00			`help`
			`F2FS is based on Log-structured File System (LFS), which supports`
			`versatile "flash-friendly" features. The design has been focused on`
			`addressing the fundamental issues in LFS, which are snowball effect`
			`of wandering tree and high cleaning overhead.`

			`Since flash-based storages show different characteristics according to`
			`the internal geometry or flash memory management schemes aka FTL, F2FS`
			`and tools support various parameters not only for configuring on-disk`
			`layout, but also for selecting allocation and cleaning algorithms.`

			`If unsure, say N.`

			`config F2FS_STAT_FS`
			`bool "F2FS Status Information"`
			`depends on F2FS_FS && DEBUG_FS`
			`default y`
			`help`
			`/sys/kernel/debug/f2fs/ contains information about all the partitions`
			`mounted as f2fs. Each file shows the whole f2fs information.`

			`/sys/kernel/debug/f2fs/status includes:`
			`- major file system information managed by f2fs currently`
			`- average SIT information about whole segments`
			`- current memory footprint consumed by f2fs.`

			`config F2FS_FS_XATTR`
			`bool "F2FS extended attributes"`
			`depends on F2FS_FS`
			`default y`
			`help`
			`Extended attributes are name:value pairs associated with inodes by`
			`the kernel or by users (see the attr(5) manual page, or visit`
			`<http://acl.bestbits.at/> for details).`

			`If unsure, say N.`

			`config F2FS_FS_POSIX_ACL`
			`bool "F2FS Access Control Lists"`
			`depends on F2FS_FS_XATTR`
			`select FS_POSIX_ACL`
			`default y`
			`help`
			`Posix Access Control Lists (ACLs) support permissions for users and`
			`gourps beyond the owner/group/world scheme.`

			`To learn more about Access Control Lists, visit the POSIX ACLs for`
			`Linux website <http://acl.bestbits.at/>.`

			`If you don't know what Access Control Lists are, say N`
f2fs: support xattr security labels This patch adds the support of security labels for f2fs, which will be used by Linus Security Models (LSMs). Quote from http://en.wikipedia.org/wiki/Linux_Security_Modules: "Linux Security Modules (LSM) is a framework that allows the Linux kernel to support a variety of computer security models while avoiding favoritism toward any single security implementation. The framework is licensed under the terms of the GNU General Public License and is standard part of the Linux kernel since Linux 2.6. AppArmor, SELinux, Smack and TOMOYO Linux are the currently accepted modules in the official kernel.". Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> 2013-06-03 14:46:19 +04:00
			`config F2FS_FS_SECURITY`
			`bool "F2FS Security Labels"`
			`depends on F2FS_FS_XATTR`
			`help`
			`Security labels provide an access control facility to support Linux`
			`Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO`
			`Linux. This option enables an extended attribute handler for file`
			`security labels in the f2fs filesystem, so that it requires enabling`
			`the extended attribute support in advance.`

			`If you are not using a security module, say N.`
f2fs: introduce CONFIG_F2FS_CHECK_FS for BUG_ON control This config will support an option to remove so many BUG_ONs that degrade the performance potentially. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> 2013-10-29 10:43:01 +04:00
			`config F2FS_CHECK_FS`
			`bool "F2FS consistency checking feature"`
			`depends on F2FS_FS`
			`help`
			`Enables BUG_ONs which check the file system consistency in runtime.`

			`If you want to improve the performance, say N.`