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Commit 31db6e9e authored by Alexey Dobriyan's avatar Alexey Dobriyan Committed by David Woodhouse
Browse files

[JFFS2] Move JFFS2 config options out of fs/Kconfig 



Signed-off-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent d68156cf

fs/Kconfig

+1 −189
Original line number Diff line number Diff line
@@ -1136,195 +1136,7 @@ config EFS_FS 
	  To compile the EFS file system support as a module, choose M here: the

	  module will be called efs.



config JFFS2_FS

	tristate "Journalling Flash File System v2 (JFFS2) support"

	select CRC32

	depends on MTD

	help

	  JFFS2 is the second generation of the Journalling Flash File System

	  for use on diskless embedded devices. It provides improved wear

	  levelling, compression and support for hard links. You cannot use

	  this on normal block devices, only on 'MTD' devices.



	  Further information on the design and implementation of JFFS2 is

	  available at <http://sources.redhat.com/jffs2/>.



config JFFS2_FS_DEBUG

	int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"

	depends on JFFS2_FS

	default "0"

	help

	  This controls the amount of debugging messages produced by the JFFS2

	  code. Set it to zero for use in production systems. For evaluation,

	  testing and debugging, it's advisable to set it to one. This will

	  enable a few assertions and will print debugging messages at the

	  KERN_DEBUG loglevel, where they won't normally be visible. Level 2

	  is unlikely to be useful - it enables extra debugging in certain

	  areas which at one point needed debugging, but when the bugs were

	  located and fixed, the detailed messages were relegated to level 2.



	  If reporting bugs, please try to have available a full dump of the

	  messages at debug level 1 while the misbehaviour was occurring.



config JFFS2_FS_WRITEBUFFER

	bool "JFFS2 write-buffering support"

	depends on JFFS2_FS

	default y

	help

	  This enables the write-buffering support in JFFS2.



	  This functionality is required to support JFFS2 on the following

	  types of flash devices:

	    - NAND flash

	    - NOR flash with transparent ECC

	    - DataFlash



config JFFS2_FS_WBUF_VERIFY

	bool "Verify JFFS2 write-buffer reads"

	depends on JFFS2_FS_WRITEBUFFER

	default n

	help

	  This causes JFFS2 to read back every page written through the

	  write-buffer, and check for errors.



config JFFS2_SUMMARY

	bool "JFFS2 summary support (EXPERIMENTAL)"

	depends on JFFS2_FS && EXPERIMENTAL

	default n

	help

	  This feature makes it possible to use summary information

	  for faster filesystem mount.



	  The summary information can be inserted into a filesystem image

	  by the utility 'sumtool'.



	  If unsure, say 'N'.



config JFFS2_FS_XATTR

	bool "JFFS2 XATTR support (EXPERIMENTAL)"

	depends on JFFS2_FS && EXPERIMENTAL

	default n

	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 JFFS2_FS_POSIX_ACL

	bool "JFFS2 POSIX Access Control Lists"

	depends on JFFS2_FS_XATTR

	default y

	select FS_POSIX_ACL

	help

	  Posix Access Control Lists (ACLs) support permissions for users and

	  groups 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 JFFS2_FS_SECURITY

	bool "JFFS2 Security Labels"

	depends on JFFS2_FS_XATTR

	default y

	help

	  Security labels support alternative access control models

	  implemented by security modules like SELinux.  This option

	  enables an extended attribute handler for file security

	  labels in the jffs2 filesystem.



	  If you are not using a security module that requires using

	  extended attributes for file security labels, say N.



config JFFS2_COMPRESSION_OPTIONS

	bool "Advanced compression options for JFFS2"

	depends on JFFS2_FS

	default n

	help

	  Enabling this option allows you to explicitly choose which

	  compression modules, if any, are enabled in JFFS2. Removing

	  compressors can mean you cannot read existing file systems,

	  and enabling experimental compressors can mean that you

	  write a file system which cannot be read by a standard kernel.



	  If unsure, you should _definitely_ say 'N'.



config JFFS2_ZLIB

	bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS

	select ZLIB_INFLATE

	select ZLIB_DEFLATE

	depends on JFFS2_FS

	default y

	help

	  Zlib is designed to be a free, general-purpose, legally unencumbered,

	  lossless data-compression library for use on virtually any computer

	  hardware and operating system. See <http://www.gzip.org/zlib/> for

	  further information.



	  Say 'Y' if unsure.



config JFFS2_LZO

	bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS

	select LZO_COMPRESS

	select LZO_DECOMPRESS

	depends on JFFS2_FS

	default n

	help

	  minilzo-based compression. Generally works better than Zlib.



	  This feature was added in July, 2007. Say 'N' if you need

	  compatibility with older bootloaders or kernels.



config JFFS2_RTIME

	bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS

	depends on JFFS2_FS

	default y

	help

	  Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.



config JFFS2_RUBIN

	bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS

	depends on JFFS2_FS

	default n

	help

	  RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.



choice

	prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS

	default JFFS2_CMODE_PRIORITY

	depends on JFFS2_FS

	help

	  You can set here the default compression mode of JFFS2 from

	  the available compression modes. Don't touch if unsure.



config JFFS2_CMODE_NONE

	bool "no compression"

	help

	  Uses no compression.



config JFFS2_CMODE_PRIORITY

	bool "priority"

	help

	  Tries the compressors in a predefined order and chooses the first

	  successful one.



config JFFS2_CMODE_SIZE

	bool "size (EXPERIMENTAL)"

	help

	  Tries all compressors and chooses the one which has the smallest

	  result.



config JFFS2_CMODE_FAVOURLZO

	bool "Favour LZO"

	help

	  Tries all compressors and chooses the one which has the smallest

	  result but gives some preference to LZO (which has faster

	  decompression) at the expense of size.



endchoice



source "fs/jffs2/Kconfig"

# UBIFS File system configuration

source "fs/ubifs/Kconfig"

fs/jffs2/Kconfig

0 → 100644
+188 −0
Original line number Diff line number Diff line 
config JFFS2_FS

	tristate "Journalling Flash File System v2 (JFFS2) support"

	select CRC32

	depends on MTD

	help

	  JFFS2 is the second generation of the Journalling Flash File System

	  for use on diskless embedded devices. It provides improved wear

	  levelling, compression and support for hard links. You cannot use

	  this on normal block devices, only on 'MTD' devices.



	  Further information on the design and implementation of JFFS2 is

	  available at <http://sources.redhat.com/jffs2/>.



config JFFS2_FS_DEBUG

	int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"

	depends on JFFS2_FS

	default "0"

	help

	  This controls the amount of debugging messages produced by the JFFS2

	  code. Set it to zero for use in production systems. For evaluation,

	  testing and debugging, it's advisable to set it to one. This will

	  enable a few assertions and will print debugging messages at the

	  KERN_DEBUG loglevel, where they won't normally be visible. Level 2

	  is unlikely to be useful - it enables extra debugging in certain

	  areas which at one point needed debugging, but when the bugs were

	  located and fixed, the detailed messages were relegated to level 2.



	  If reporting bugs, please try to have available a full dump of the

	  messages at debug level 1 while the misbehaviour was occurring.



config JFFS2_FS_WRITEBUFFER

	bool "JFFS2 write-buffering support"

	depends on JFFS2_FS

	default y

	help

	  This enables the write-buffering support in JFFS2.



	  This functionality is required to support JFFS2 on the following

	  types of flash devices:

	    - NAND flash

	    - NOR flash with transparent ECC

	    - DataFlash



config JFFS2_FS_WBUF_VERIFY

	bool "Verify JFFS2 write-buffer reads"

	depends on JFFS2_FS_WRITEBUFFER

	default n

	help

	  This causes JFFS2 to read back every page written through the

	  write-buffer, and check for errors.



config JFFS2_SUMMARY

	bool "JFFS2 summary support (EXPERIMENTAL)"

	depends on JFFS2_FS && EXPERIMENTAL

	default n

	help

	  This feature makes it possible to use summary information

	  for faster filesystem mount.



	  The summary information can be inserted into a filesystem image

	  by the utility 'sumtool'.



	  If unsure, say 'N'.



config JFFS2_FS_XATTR

	bool "JFFS2 XATTR support (EXPERIMENTAL)"

	depends on JFFS2_FS && EXPERIMENTAL

	default n

	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 JFFS2_FS_POSIX_ACL

	bool "JFFS2 POSIX Access Control Lists"

	depends on JFFS2_FS_XATTR

	default y

	select FS_POSIX_ACL

	help

	  Posix Access Control Lists (ACLs) support permissions for users and

	  groups 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 JFFS2_FS_SECURITY

	bool "JFFS2 Security Labels"

	depends on JFFS2_FS_XATTR

	default y

	help

	  Security labels support alternative access control models

	  implemented by security modules like SELinux.  This option

	  enables an extended attribute handler for file security

	  labels in the jffs2 filesystem.



	  If you are not using a security module that requires using

	  extended attributes for file security labels, say N.



config JFFS2_COMPRESSION_OPTIONS

	bool "Advanced compression options for JFFS2"

	depends on JFFS2_FS

	default n

	help

	  Enabling this option allows you to explicitly choose which

	  compression modules, if any, are enabled in JFFS2. Removing

	  compressors can mean you cannot read existing file systems,

	  and enabling experimental compressors can mean that you

	  write a file system which cannot be read by a standard kernel.



	  If unsure, you should _definitely_ say 'N'.



config JFFS2_ZLIB

	bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS

	select ZLIB_INFLATE

	select ZLIB_DEFLATE

	depends on JFFS2_FS

	default y

	help

	  Zlib is designed to be a free, general-purpose, legally unencumbered,

	  lossless data-compression library for use on virtually any computer

	  hardware and operating system. See <http://www.gzip.org/zlib/> for

	  further information.



	  Say 'Y' if unsure.



config JFFS2_LZO

	bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS

	select LZO_COMPRESS

	select LZO_DECOMPRESS

	depends on JFFS2_FS

	default n

	help

	  minilzo-based compression. Generally works better than Zlib.



	  This feature was added in July, 2007. Say 'N' if you need

	  compatibility with older bootloaders or kernels.



config JFFS2_RTIME

	bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS

	depends on JFFS2_FS

	default y

	help

	  Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.



config JFFS2_RUBIN

	bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS

	depends on JFFS2_FS

	default n

	help

	  RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.



choice

	prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS

	default JFFS2_CMODE_PRIORITY

	depends on JFFS2_FS

	help

	  You can set here the default compression mode of JFFS2 from

	  the available compression modes. Don't touch if unsure.



config JFFS2_CMODE_NONE

	bool "no compression"

	help

	  Uses no compression.



config JFFS2_CMODE_PRIORITY

	bool "priority"

	help

	  Tries the compressors in a predefined order and chooses the first

	  successful one.



config JFFS2_CMODE_SIZE

	bool "size (EXPERIMENTAL)"

	help

	  Tries all compressors and chooses the one which has the smallest

	  result.



config JFFS2_CMODE_FAVOURLZO

	bool "Favour LZO"

	help

	  Tries all compressors and chooses the one which has the smallest

	  result but gives some preference to LZO (which has faster

	  decompression) at the expense of size.



endchoice