mirror of https://gitee.com/openkylin/linux.git
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: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexey Dobriyan
Linus Torvalds
parent
0d468300dc
commit
6da0b38f44
272
fs/Kconfig
272
fs/Kconfig
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@ -6,61 +6,9 @@ menu "File systems"
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if BLOCK
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if BLOCK
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config EXT2_FS
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source "fs/ext2/Kconfig"
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tristate "Second extended fs support"
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source "fs/ext3/Kconfig"
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help
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source "fs/ext4/Kconfig"
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Ext2 is a standard Linux file system for hard disks.
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To compile this file system support as a module, choose M here: the
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module will be called ext2.
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If unsure, say Y.
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config EXT2_FS_XATTR
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bool "Ext2 extended attributes"
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depends on EXT2_FS
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help
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Extended attributes are name:value pairs associated with inodes by
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the kernel or by users (see the attr(5) manual page, or visit
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<http://acl.bestbits.at/> for details).
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If unsure, say N.
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config EXT2_FS_POSIX_ACL
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bool "Ext2 POSIX Access Control Lists"
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depends on EXT2_FS_XATTR
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select FS_POSIX_ACL
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help
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Posix Access Control Lists (ACLs) support permissions for users and
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groups beyond the owner/group/world scheme.
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To learn more about Access Control Lists, visit the Posix ACLs for
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Linux website <http://acl.bestbits.at/>.
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If you don't know what Access Control Lists are, say N
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config EXT2_FS_SECURITY
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bool "Ext2 Security Labels"
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depends on EXT2_FS_XATTR
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help
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Security labels support alternative access control models
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implemented by security modules like SELinux. This option
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enables an extended attribute handler for file security
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labels in the ext2 filesystem.
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If you are not using a security module that requires using
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extended attributes for file security labels, say N.
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config EXT2_FS_XIP
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bool "Ext2 execute in place support"
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depends on EXT2_FS && MMU
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help
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Execute in place can be used on memory-backed block devices. If you
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enable this option, you can select to mount block devices which are
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capable of this feature without using the page cache.
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If you do not use a block device that is capable of using this,
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or if unsure, say N.
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config FS_XIP
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config FS_XIP
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# execute in place
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# execute in place
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@ -68,218 +16,8 @@ config FS_XIP
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depends on EXT2_FS_XIP
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depends on EXT2_FS_XIP
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default y
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default y
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config EXT3_FS
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source "fs/jbd/Kconfig"
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tristate "Ext3 journalling file system support"
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source "fs/jbd2/Kconfig"
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select JBD
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help
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This is the journalling version of the Second extended file system
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(often called ext3), the de facto standard Linux file system
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(method to organize files on a storage device) for hard disks.
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The journalling code included in this driver means you do not have
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to run e2fsck (file system checker) on your file systems after a
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crash. The journal keeps track of any changes that were being made
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at the time the system crashed, and can ensure that your file system
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is consistent without the need for a lengthy check.
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Other than adding the journal to the file system, the on-disk format
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of ext3 is identical to ext2. It is possible to freely switch
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between using the ext3 driver and the ext2 driver, as long as the
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file system has been cleanly unmounted, or e2fsck is run on the file
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system.
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To add a journal on an existing ext2 file system or change the
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behavior of ext3 file systems, you can use the tune2fs utility ("man
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tune2fs"). To modify attributes of files and directories on ext3
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file systems, use chattr ("man chattr"). You need to be using
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e2fsprogs version 1.20 or later in order to create ext3 journals
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(available at <http://sourceforge.net/projects/e2fsprogs/>).
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To compile this file system support as a module, choose M here: the
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module will be called ext3.
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config EXT3_FS_XATTR
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bool "Ext3 extended attributes"
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depends on EXT3_FS
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default y
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help
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Extended attributes are name:value pairs associated with inodes by
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the kernel or by users (see the attr(5) manual page, or visit
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<http://acl.bestbits.at/> for details).
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If unsure, say N.
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You need this for POSIX ACL support on ext3.
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config EXT3_FS_POSIX_ACL
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bool "Ext3 POSIX Access Control Lists"
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depends on EXT3_FS_XATTR
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select FS_POSIX_ACL
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help
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Posix Access Control Lists (ACLs) support permissions for users and
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groups beyond the owner/group/world scheme.
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To learn more about Access Control Lists, visit the Posix ACLs for
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Linux website <http://acl.bestbits.at/>.
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If you don't know what Access Control Lists are, say N
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config EXT3_FS_SECURITY
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bool "Ext3 Security Labels"
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depends on EXT3_FS_XATTR
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help
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Security labels support alternative access control models
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implemented by security modules like SELinux. This option
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enables an extended attribute handler for file security
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labels in the ext3 filesystem.
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If you are not using a security module that requires using
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extended attributes for file security labels, say N.
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config EXT4_FS
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tristate "The Extended 4 (ext4) filesystem"
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select JBD2
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select CRC16
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help
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This is the next generation of the ext3 filesystem.
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Unlike the change from ext2 filesystem to ext3 filesystem,
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the on-disk format of ext4 is not forwards compatible with
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ext3; it is based on extent maps and it supports 48-bit
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physical block numbers. The ext4 filesystem also supports delayed
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allocation, persistent preallocation, high resolution time stamps,
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and a number of other features to improve performance and speed
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up fsck time. For more information, please see the web pages at
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http://ext4.wiki.kernel.org.
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The ext4 filesystem will support mounting an ext3
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filesystem; while there will be some performance gains from
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the delayed allocation and inode table readahead, the best
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performance gains will require enabling ext4 features in the
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filesystem, or formating a new filesystem as an ext4
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filesystem initially.
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To compile this file system support as a module, choose M here. The
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module will be called ext4.
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If unsure, say N.
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config EXT4DEV_COMPAT
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bool "Enable ext4dev compatibility"
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depends on EXT4_FS
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help
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Starting with 2.6.28, the name of the ext4 filesystem was
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renamed from ext4dev to ext4. Unfortunately there are some
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legacy userspace programs (such as klibc's fstype) have
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"ext4dev" hardcoded.
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To enable backwards compatibility so that systems that are
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still expecting to mount ext4 filesystems using ext4dev,
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chose Y here. This feature will go away by 2.6.31, so
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please arrange to get your userspace programs fixed!
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config EXT4_FS_XATTR
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bool "Ext4 extended attributes"
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depends on EXT4_FS
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default y
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help
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Extended attributes are name:value pairs associated with inodes by
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the kernel or by users (see the attr(5) manual page, or visit
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<http://acl.bestbits.at/> for details).
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If unsure, say N.
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You need this for POSIX ACL support on ext4.
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config EXT4_FS_POSIX_ACL
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bool "Ext4 POSIX Access Control Lists"
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depends on EXT4_FS_XATTR
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select FS_POSIX_ACL
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help
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POSIX Access Control Lists (ACLs) support permissions for users and
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groups beyond the owner/group/world scheme.
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To learn more about Access Control Lists, visit the POSIX ACLs for
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Linux website <http://acl.bestbits.at/>.
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If you don't know what Access Control Lists are, say N
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config EXT4_FS_SECURITY
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bool "Ext4 Security Labels"
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depends on EXT4_FS_XATTR
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help
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Security labels support alternative access control models
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implemented by security modules like SELinux. This option
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enables an extended attribute handler for file security
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labels in the ext4 filesystem.
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If you are not using a security module that requires using
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extended attributes for file security labels, say N.
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config JBD
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tristate
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help
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This is a generic journalling layer for block devices. It is
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currently used by the ext3 file system, but it could also be
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used to add journal support to other file systems or block
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devices such as RAID or LVM.
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If you are using the ext3 file system, you need to say Y here.
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If you are not using ext3 then you will probably want to say N.
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To compile this device as a module, choose M here: the module will be
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called jbd. If you are compiling ext3 into the kernel, you
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cannot compile this code as a module.
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config JBD_DEBUG
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bool "JBD (ext3) debugging support"
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depends on JBD && DEBUG_FS
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help
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If you are using the ext3 journaled file system (or potentially any
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other file system/device using JBD), this option allows you to
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enable debugging output while the system is running, in order to
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help track down any problems you are having. By default the
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debugging output will be turned off.
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If you select Y here, then you will be able to turn on debugging
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with "echo N > /sys/kernel/debug/jbd/jbd-debug", where N is a
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number between 1 and 5, the higher the number, the more debugging
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output is generated. To turn debugging off again, do
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"echo 0 > /sys/kernel/debug/jbd/jbd-debug".
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config JBD2
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tristate
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select CRC32
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help
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This is a generic journaling layer for block devices that support
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both 32-bit and 64-bit block numbers. It is currently used by
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the ext4 and OCFS2 filesystems, but it could also be used to add
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journal support to other file systems or block devices such
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as RAID or LVM.
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If you are using ext4 or OCFS2, you need to say Y here.
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If you are not using ext4 or OCFS2 then you will
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probably want to say N.
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To compile this device as a module, choose M here. The module will be
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called jbd2. If you are compiling ext4 or OCFS2 into the kernel,
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you cannot compile this code as a module.
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config JBD2_DEBUG
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bool "JBD2 (ext4) debugging support"
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depends on JBD2 && DEBUG_FS
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help
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If you are using the ext4 journaled file system (or
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potentially any other filesystem/device using JBD2), this option
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allows you to enable debugging output while the system is running,
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in order to help track down any problems you are having.
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By default, the debugging output will be turned off.
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If you select Y here, then you will be able to turn on debugging
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with "echo N > /sys/kernel/debug/jbd2/jbd2-debug", where N is a
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number between 1 and 5. The higher the number, the more debugging
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output is generated. To turn debugging off again, do
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"echo 0 > /sys/kernel/debug/jbd2/jbd2-debug".
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config FS_MBCACHE
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config FS_MBCACHE
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# Meta block cache for Extended Attributes (ext2/ext3/ext4)
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# Meta block cache for Extended Attributes (ext2/ext3/ext4)
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@ -0,0 +1,55 @@
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config EXT2_FS
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tristate "Second extended fs support"
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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.
|
||||||
|
|
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|
If unsure, say Y.
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||||||
|
|
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config EXT2_FS_XATTR
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|
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.
|
||||||
|
|
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config EXT2_FS_POSIX_ACL
|
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|
bool "Ext2 POSIX Access Control Lists"
|
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depends on EXT2_FS_XATTR
|
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|
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.
|
||||||
|
|
@ -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.
|
||||||
|
|
@ -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.
|
||||||
|
|
@ -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".
|
||||||
|
|
@ -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".
|
||||||
Loading…
Reference in New Issue