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- 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".
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