path: root/fs/ext4/Kconfig
diff options
authorAlexey Dobriyan <adobriyan@gmail.com>2008-10-20 22:28:45 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-20 11:43:59 -0700
commit6da0b38f4433fb0f24615449d7966471b6e5eae0 (patch)
tree9f163fbbc7342406bb602de447293c0b11628c6f /fs/ext4/Kconfig
parent0d468300dc97d6aec084799ffe39253ac366f1e4 (diff)
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>
Diffstat (limited to 'fs/ext4/Kconfig')
1 files changed, 79 insertions, 0 deletions
diff --git a/fs/ext4/Kconfig b/fs/ext4/Kconfig
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index 00000000000..7505482a08f
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+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.
+ 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.
+ 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
+ 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.