| config JBD2 |
| tristate |
| select CRC32 |
| select CRYPTO |
| select CRYPTO_CRC32C |
| 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". |
