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authorJoel Becker <joel.becker@oracle.com>2008-09-03 20:03:41 -0700
committerMark Fasheh <mfasheh@suse.com>2008-10-13 17:02:43 -0700
commit2b4e30fbde425828b17f0e9c8f8e3fd3ecb2bc75 (patch)
tree5b340cde72e058b51642f0c7255818f62014bc91 /fs/Kconfig
parent12462f1d9f0b96389497438dc2730c6f7410be82 (diff)
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ocfs2: Switch over to JBD2.
ocfs2 wants JBD2 for many reasons, not the least of which is that JBD is limiting our maximum filesystem size. It's a pretty trivial change. Most functions are just renamed. The only functional change is moving to Jan's inode-based ordered data mode. It's better, too. Because JBD2 reads and writes JBD journals, this is compatible with any existing filesystem. It can even interact with JBD-based ocfs2 as long as the journal is formated for JBD. We provide a compatibility option so that paranoid people can still use JBD for the time being. This will go away shortly. [ Moved call of ocfs2_begin_ordered_truncate() from ocfs2_delete_inode() to ocfs2_truncate_for_delete(). --Mark ] Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/Kconfig')
-rw-r--r--fs/Kconfig34
1 files changed, 22 insertions, 12 deletions
diff --git a/fs/Kconfig b/fs/Kconfig
index f54a157..4be00d8 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -220,17 +220,16 @@ config JBD
tristate
help
This is a generic journalling layer for block devices. It is
- currently used by the ext3 and OCFS2 file systems, but it could
- also be used to add journal support to other file systems or block
+ currently used by the ext3 file system, 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 the ext3 or OCFS2 file systems, you need to
- say Y here. If you are not using ext3 OCFS2 then you will probably
- want to say N.
+ If you are using the ext3 file system, you need to say Y here.
+ If you are not using ext3 then you will probably want to say N.
To compile this device as a module, choose M here: the module will be
- called jbd. If you are compiling ext3 or OCFS2 into the kernel,
- you cannot compile this code as a module.
+ called jbd. If you are compiling ext3 into the kernel, you
+ cannot compile this code as a module.
config JBD_DEBUG
bool "JBD (ext3) debugging support"
@@ -254,15 +253,16 @@ config JBD2
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 filesystem, but it could also be used to add
+ 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, you need to say Y here. If you are not
- using ext4 then you will probably want to say N.
+ 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 into the kernel,
+ called jbd2. If you are compiling ext4 or OCFS2 into the kernel,
you cannot compile this code as a module.
config JBD2_DEBUG
@@ -440,7 +440,7 @@ config OCFS2_FS
tristate "OCFS2 file system support"
depends on NET && SYSFS
select CONFIGFS_FS
- select JBD
+ select JBD2
select CRC32
help
OCFS2 is a general purpose extent based shared disk cluster file
@@ -511,6 +511,16 @@ config OCFS2_DEBUG_FS
this option for debugging only as it is likely to decrease
performance of the filesystem.
+config OCFS2_COMPAT_JBD
+ bool "Use JBD for compatibility"
+ depends on OCFS2_FS
+ default n
+ select JBD
+ help
+ The ocfs2 filesystem now uses JBD2 for its journalling. JBD2
+ is backwards compatible with JBD. It is safe to say N here.
+ However, if you really want to use the original JBD, say Y here.
+
endif # BLOCK
config DNOTIFY