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

Browse source 
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: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexey Dobriyan 2008-10-20 22:28:45 +04:00 committed by Linus Torvalds
parent 0d468300dc
commit 6da0b38f44
6 changed files with 269 additions and 267 deletions
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272
fs/Kconfig
View file

@ -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)

55
fs/ext2/Kconfig Normal file
View file

@ -0,0 +1,55 @@
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.

67
fs/ext3/Kconfig Normal file
View file

@ -0,0 +1,67 @@
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.

79
fs/ext4/Kconfig Normal file
View file

@ -0,0 +1,79 @@
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.

30
fs/jbd/Kconfig Normal file
View file

@ -0,0 +1,30 @@
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".

33
fs/jbd2/Kconfig Normal file
View file

@ -0,0 +1,33 @@
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".