If unsure, say N.
-config EXT4DEV_COMPAT
- bool "Enable ext4dev compatibility"
+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
- 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,
- choose Y here. This feature will go away by 2.6.31, so
- please arrange to get your userspace programs fixed!
+ 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"
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"