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Commit 6da0b38f authored by Alexey Dobriyan's avatar Alexey Dobriyan Committed by Linus Torvalds
Browse files

fs/Kconfig: move ext2, ext3, ext4, JBD, JBD2 out 



Use fs/*/Kconfig more, which is good because everything related to one
filesystem is in one place and fs/Kconfig is quite fat.

Signed-off-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 0d468300

fs/Kconfig

+5 −267
Original line number Diff line number Diff line
@@ -6,61 +6,9 @@ menu "File systems" 


if BLOCK



config EXT2_FS

	tristate "Second extended fs support"

	help

	  Ext2 is a standard Linux file system for hard disks.



	  To compile this file system support as a module, choose M here: the

	  module will be called ext2.



	  If unsure, say Y.



config EXT2_FS_XATTR

	bool "Ext2 extended attributes"

	depends on EXT2_FS

	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 EXT2_FS_POSIX_ACL

	bool "Ext2 POSIX Access Control Lists"

	depends on EXT2_FS_XATTR

	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 EXT2_FS_SECURITY

	bool "Ext2 Security Labels"

	depends on EXT2_FS_XATTR

	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 ext2 filesystem.



	  If you are not using a security module that requires using

	  extended attributes for file security labels, say N.



config EXT2_FS_XIP

	bool "Ext2 execute in place support"

	depends on EXT2_FS && MMU

	help

	  Execute in place can be used on memory-backed block devices. If you

	  enable this option, you can select to mount block devices which are

	  capable of this feature without using the page cache.



	  If you do not use a block device that is capable of using this,

	  or if unsure, say N.

source "fs/ext2/Kconfig"

source "fs/ext3/Kconfig"

source "fs/ext4/Kconfig"



config FS_XIP

# execute in place
@@ -68,218 +16,8 @@ config FS_XIP 
	depends on EXT2_FS_XIP

	default y



config EXT3_FS

	tristate "Ext3 journalling file system support"

	select JBD

	help

	  This is the journalling version of the Second extended file system

	  (often called ext3), the de facto standard Linux file system

	  (method to organize files on a storage device) for hard disks.



	  The journalling code included in this driver means you do not have

	  to run e2fsck (file system checker) on your file systems after a

	  crash.  The journal keeps track of any changes that were being made

	  at the time the system crashed, and can ensure that your file system

	  is consistent without the need for a lengthy check.



	  Other than adding the journal to the file system, the on-disk format

	  of ext3 is identical to ext2.  It is possible to freely switch

	  between using the ext3 driver and the ext2 driver, as long as the

	  file system has been cleanly unmounted, or e2fsck is run on the file

	  system.



	  To add a journal on an existing ext2 file system or change the

	  behavior of ext3 file systems, you can use the tune2fs utility ("man

	  tune2fs").  To modify attributes of files and directories on ext3

	  file systems, use chattr ("man chattr").  You need to be using

	  e2fsprogs version 1.20 or later in order to create ext3 journals

	  (available at <http://sourceforge.net/projects/e2fsprogs/>).



	  To compile this file system support as a module, choose M here: the

	  module will be called ext3.



config EXT3_FS_XATTR

	bool "Ext3 extended attributes"

	depends on EXT3_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.



	  You need this for POSIX ACL support on ext3.



config EXT3_FS_POSIX_ACL

	bool "Ext3 POSIX Access Control Lists"

	depends on EXT3_FS_XATTR

	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 EXT3_FS_SECURITY

	bool "Ext3 Security Labels"

	depends on EXT3_FS_XATTR

	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 ext3 filesystem.



	  If you are not using a security module that requires using

	  extended attributes for file security labels, say N.



config EXT4_FS

	tristate "The Extended 4 (ext4) filesystem"

	select JBD2

	select CRC16

	help

	  This is the next generation of the ext3 filesystem.



	  Unlike the change from ext2 filesystem to ext3 filesystem,

	  the on-disk format of ext4 is not forwards compatible with

	  ext3; it is based on extent maps and it supports 48-bit

	  physical block numbers.  The ext4 filesystem also supports delayed

	  allocation, persistent preallocation, high resolution time stamps,

	  and a number of other features to improve performance and speed

	  up fsck time.  For more information, please see the web pages at

	  http://ext4.wiki.kernel.org.



	  The ext4 filesystem will support mounting an ext3

	  filesystem; while there will be some performance gains from

	  the delayed allocation and inode table readahead, the best

	  performance gains will require enabling ext4 features in the

	  filesystem, or formating a new filesystem as an ext4

	  filesystem initially.



	  To compile this file system support as a module, choose M here. The

	  module will be called ext4.



	  If unsure, say N.



config EXT4DEV_COMPAT

	bool "Enable ext4dev compatibility"

	depends on EXT4_FS

	help

	  Starting with 2.6.28, the name of the ext4 filesystem was

	  renamed from ext4dev to ext4.  Unfortunately there are some

	  legacy userspace programs (such as klibc's fstype) have

	  "ext4dev" hardcoded.



	  To enable backwards compatibility so that systems that are

	  still expecting to mount ext4 filesystems using ext4dev,

	  chose Y here.   This feature will go away by 2.6.31, so

	  please arrange to get your userspace programs fixed!



config EXT4_FS_XATTR

	bool "Ext4 extended attributes"

	depends on EXT4_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.



	  You need this for POSIX ACL support on ext4.



config EXT4_FS_POSIX_ACL

	bool "Ext4 POSIX Access Control Lists"

	depends on EXT4_FS_XATTR

	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 EXT4_FS_SECURITY

	bool "Ext4 Security Labels"

	depends on EXT4_FS_XATTR

	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 ext4 filesystem.



	  If you are not using a security module that requires using

	  extended attributes for file security labels, say N.



config JBD

	tristate

	help

	  This is a generic journalling layer for block devices.  It is

	  currently used by the ext3 file system, but it could also be

	  used to add journal support to other file systems or block

	  devices such as RAID or LVM.



	  If you are using the ext3 file system, you need to say Y here.

	  If you are not using ext3 then you will probably want to say N.



	  To compile this device as a module, choose M here: the module will be

	  called jbd.  If you are compiling ext3 into the kernel, you

	  cannot compile this code as a module.



config JBD_DEBUG

	bool "JBD (ext3) debugging support"

	depends on JBD && DEBUG_FS

	help

	  If you are using the ext3 journaled file system (or potentially any

	  other file system/device using JBD), this option allows you to

	  enable debugging output while the system is running, in order to

	  help track down any problems you are having.  By default the

	  debugging output will be turned off.



	  If you select Y here, then you will be able to turn on debugging

	  with "echo N > /sys/kernel/debug/jbd/jbd-debug", where N is a

	  number between 1 and 5, the higher the number, the more debugging

	  output is generated.  To turn debugging off again, do

	  "echo 0 > /sys/kernel/debug/jbd/jbd-debug".



config JBD2

	tristate

	select CRC32

	help

	  This is a generic journaling layer for block devices that support

	  both 32-bit and 64-bit block numbers.  It is currently used by

	  the ext4 and OCFS2 filesystems, but it could also be used to add

	  journal support to other file systems or block devices such

	  as RAID or LVM.



	  If you are using ext4 or OCFS2, you need to say Y here.

	  If you are not using ext4 or OCFS2 then you will

	  probably want to say N.



	  To compile this device as a module, choose M here. The module will be

	  called jbd2.  If you are compiling ext4 or OCFS2 into the kernel,

	  you cannot compile this code as a module.



config JBD2_DEBUG

	bool "JBD2 (ext4) debugging support"

	depends on JBD2 && DEBUG_FS

	help

	  If you are using the ext4 journaled file system (or

	  potentially any other filesystem/device using JBD2), this option

	  allows you to enable debugging output while the system is running,

	  in order to help track down any problems you are having.

	  By default, the debugging output will be turned off.



	  If you select Y here, then you will be able to turn on debugging

	  with "echo N > /sys/kernel/debug/jbd2/jbd2-debug", where N is a

	  number between 1 and 5. The higher the number, the more debugging

	  output is generated.  To turn debugging off again, do

	  "echo 0 > /sys/kernel/debug/jbd2/jbd2-debug".

source "fs/jbd/Kconfig"

source "fs/jbd2/Kconfig"



config FS_MBCACHE

# Meta block cache for Extended Attributes (ext2/ext3/ext4)

fs/ext2/Kconfig

0 → 100644
+55 −0
Original line number Diff line number Diff line 
config EXT2_FS

	tristate "Second extended fs support"

	help

	  Ext2 is a standard Linux file system for hard disks.



	  To compile this file system support as a module, choose M here: the

	  module will be called ext2.



	  If unsure, say Y.



config EXT2_FS_XATTR

	bool "Ext2 extended attributes"

	depends on EXT2_FS

	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 EXT2_FS_POSIX_ACL

	bool "Ext2 POSIX Access Control Lists"

	depends on EXT2_FS_XATTR

	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 EXT2_FS_SECURITY

	bool "Ext2 Security Labels"

	depends on EXT2_FS_XATTR

	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 ext2 filesystem.



	  If you are not using a security module that requires using

	  extended attributes for file security labels, say N.



config EXT2_FS_XIP

	bool "Ext2 execute in place support"

	depends on EXT2_FS && MMU

	help

	  Execute in place can be used on memory-backed block devices. If you

	  enable this option, you can select to mount block devices which are

	  capable of this feature without using the page cache.



	  If you do not use a block device that is capable of using this,

	  or if unsure, say N.

fs/ext3/Kconfig

0 → 100644
+67 −0
Original line number Diff line number Diff line 
config EXT3_FS

	tristate "Ext3 journalling file system support"

	select JBD

	help

	  This is the journalling version of the Second extended file system

	  (often called ext3), the de facto standard Linux file system

	  (method to organize files on a storage device) for hard disks.



	  The journalling code included in this driver means you do not have

	  to run e2fsck (file system checker) on your file systems after a

	  crash.  The journal keeps track of any changes that were being made

	  at the time the system crashed, and can ensure that your file system

	  is consistent without the need for a lengthy check.



	  Other than adding the journal to the file system, the on-disk format

	  of ext3 is identical to ext2.  It is possible to freely switch

	  between using the ext3 driver and the ext2 driver, as long as the

	  file system has been cleanly unmounted, or e2fsck is run on the file

	  system.



	  To add a journal on an existing ext2 file system or change the

	  behavior of ext3 file systems, you can use the tune2fs utility ("man

	  tune2fs").  To modify attributes of files and directories on ext3

	  file systems, use chattr ("man chattr").  You need to be using

	  e2fsprogs version 1.20 or later in order to create ext3 journals

	  (available at <http://sourceforge.net/projects/e2fsprogs/>).



	  To compile this file system support as a module, choose M here: the

	  module will be called ext3.



config EXT3_FS_XATTR

	bool "Ext3 extended attributes"

	depends on EXT3_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.



	  You need this for POSIX ACL support on ext3.



config EXT3_FS_POSIX_ACL

	bool "Ext3 POSIX Access Control Lists"

	depends on EXT3_FS_XATTR

	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 EXT3_FS_SECURITY

	bool "Ext3 Security Labels"

	depends on EXT3_FS_XATTR

	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 ext3 filesystem.



	  If you are not using a security module that requires using

	  extended attributes for file security labels, say N.

fs/ext4/Kconfig

0 → 100644
+79 −0
Original line number Diff line number Diff line 
config EXT4_FS

	tristate "The Extended 4 (ext4) filesystem"

	select JBD2

	select CRC16

	help

	  This is the next generation of the ext3 filesystem.



	  Unlike the change from ext2 filesystem to ext3 filesystem,

	  the on-disk format of ext4 is not forwards compatible with

	  ext3; it is based on extent maps and it supports 48-bit

	  physical block numbers.  The ext4 filesystem also supports delayed

	  allocation, persistent preallocation, high resolution time stamps,

	  and a number of other features to improve performance and speed

	  up fsck time.  For more information, please see the web pages at

	  http://ext4.wiki.kernel.org.



	  The ext4 filesystem will support mounting an ext3

	  filesystem; while there will be some performance gains from

	  the delayed allocation and inode table readahead, the best

	  performance gains will require enabling ext4 features in the

	  filesystem, or formating a new filesystem as an ext4

	  filesystem initially.



	  To compile this file system support as a module, choose M here. The

	  module will be called ext4.



	  If unsure, say N.



config EXT4DEV_COMPAT

	bool "Enable ext4dev compatibility"

	depends on EXT4_FS

	help

	  Starting with 2.6.28, the name of the ext4 filesystem was

	  renamed from ext4dev to ext4.  Unfortunately there are some

	  legacy userspace programs (such as klibc's fstype) have

	  "ext4dev" hardcoded.



	  To enable backwards compatibility so that systems that are

	  still expecting to mount ext4 filesystems using ext4dev,

	  chose Y here.   This feature will go away by 2.6.31, so

	  please arrange to get your userspace programs fixed!



config EXT4_FS_XATTR

	bool "Ext4 extended attributes"

	depends on EXT4_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.



	  You need this for POSIX ACL support on ext4.



config EXT4_FS_POSIX_ACL

	bool "Ext4 POSIX Access Control Lists"

	depends on EXT4_FS_XATTR

	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 EXT4_FS_SECURITY

	bool "Ext4 Security Labels"

	depends on EXT4_FS_XATTR

	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 ext4 filesystem.



	  If you are not using a security module that requires using

	  extended attributes for file security labels, say N.

fs/jbd/Kconfig

0 → 100644
+30 −0
Original line number Diff line number Diff line 
config JBD

	tristate

	help

	  This is a generic journalling layer for block devices.  It is

	  currently used by the ext3 file system, but it could also be

	  used to add journal support to other file systems or block

	  devices such as RAID or LVM.



	  If you are using the ext3 file system, you need to say Y here.

	  If you are not using ext3 then you will probably want to say N.



	  To compile this device as a module, choose M here: the module will be

	  called jbd.  If you are compiling ext3 into the kernel, you

	  cannot compile this code as a module.



config JBD_DEBUG

	bool "JBD (ext3) debugging support"

	depends on JBD && DEBUG_FS

	help

	  If you are using the ext3 journaled file system (or potentially any

	  other file system/device using JBD), this option allows you to

	  enable debugging output while the system is running, in order to

	  help track down any problems you are having.  By default the

	  debugging output will be turned off.



	  If you select Y here, then you will be able to turn on debugging

	  with "echo N > /sys/kernel/debug/jbd/jbd-debug", where N is a

	  number between 1 and 5, the higher the number, the more debugging

	  output is generated.  To turn debugging off again, do

	  "echo 0 > /sys/kernel/debug/jbd/jbd-debug".