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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
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The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
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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 formatting 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 EXT4_USE_FOR_EXT23
- bool "Use ext4 for ext2/ext3 file systems"
- depends on EXT4_FS
- depends on EXT3_FS=n || EXT2_FS=n
- default y
- help
- Allow the ext4 file system driver code to be used for ext2 or
- ext3 file system mounts. This allows users to reduce their
- compiled kernel size by using one file system driver for
- ext2, ext3, and ext4 file systems.
-
-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 EXT4_DEBUG
- bool "EXT4 debugging support"
- depends on EXT4_FS
- help
- Enables run-time debugging support for the ext4 filesystem.
-
- If you select Y here, then you will be able to turn on debugging
- with a command such as "echo 1 > /sys/kernel/debug/ext4/mballoc-debug"