Re: [Ext2-devel] [PATCH 1/9] extents for ext4

On Fri, 11 Aug 2006 16:00:02 -0700 Andrew Morton wrote:

On Fri, 11 Aug 2006 13:57:37 -0700
"Randy.Dunlap" <rdunlap@xxxxxxxxxxxx> wrote:

On Thu, 10 Aug 2006 13:29:56 +0400 Alex Tomas wrote:

AM> - The existing comments could benefit from some rework by a
AM> native English speaker.

could someone assist here, please?

See if this helps.

Thanks, Randy. The Kconfig help text could do with some help too,
if you're feeling keen..

Uh, yes. Well, I don't really care for the "ext3dev" name, but
I tried to ignore that "feature" and fix it up anyway.
Feel free to ignore any parts that you don't want.


---
From: Randy Dunlap <rdunlap@xxxxxxxxxxxx>

Clean up help text and module names in ext4 & jbd2 Kconfig entries.
Add "depends on EXPERIMENTAL".

Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxx>
---
fs/Kconfig | 59 ++++++++++++++++++++++++++++++-----------------------------
1 files changed, 30 insertions(+), 29 deletions(-)

--- linux-2618-rc4-ext4.orig/fs/Kconfig
+++ linux-2618-rc4-ext4/fs/Kconfig
@@ -139,28 +139,29 @@ config EXT3_FS_SECURITY
extended attributes for file security labels, say N.

config EXT3DEV_FS
- tristate "Developmenting extended fs support"
+ tristate "Ext3dev/ext4 extended fs support development"
+ depends on EXPERIMENTAL
select JBD2
help
- Ext3dev is a precede filesystem toward next generation
- of extended fs, based on ext3 filesystem code. It will be
- renamed ext4 fs later once this ext3dev is mature and stabled.
+ Ext3dev is a predecessor filesystem of the next generation
+ extended fs ext4, based on ext3 filesystem code. It will be
+ renamed ext4 fs later, once ext3dev is mature and stabled.

Unlike the change from ext2 filesystem to ext3 filesystem,
the on-disk format of ext3dev is not the same as ext3 any more:
- it is based on extent maps and it support 48 bit physical block
+ it is based on extent maps and it supports 48-bit physical block
numbers. These combined on-disk format changes will allow
- ext3dev/ext4 to handle more than 16TB filesystem volume --
- a hard limit that ext3 can not overcome without changing
+ ext3dev/ext4 to handle more than 16 TB filesystem volumes --
+ a hard limit that ext3 cannot overcome without changing the
on-disk format.

- Other than extent maps and 48 bit block number, ext3dev also is
+ Other than extent maps and 48-bit block number, ext3dev also is
likely to have other new features such as persistent preallocation,
- high resolution time stamps and larger file support etc. These
+ high resolution time stamps, and larger file support etc. These
features will be added to ext3dev gradually.

- To compile this file system support as a module, choose M here: the
- module will be called ext2. Be aware however that the file system
+ To compile this file system support as a module, choose M here. The
+ module will be called ext3dev. Be aware, however, that the filesystem
of your root partition (the one containing the directory /) cannot
be compiled as a module, and so this could be dangerous.

@@ -177,17 +178,17 @@ config EXT3DEV_FS_XATTR

If unsure, say N.

- You need this for POSIX ACL support on ext3.
+ You need this for POSIX ACL support on ext3dev/ext4.

config EXT3DEV_FS_POSIX_ACL
bool "Ext3dev POSIX Access Control Lists"
depends on EXT3DEV_FS_XATTR
select FS_POSIX_ACL
help
- Posix Access Control Lists (ACLs) support permissions for users and
+ 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
+ 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
@@ -199,7 +200,7 @@ config EXT3DEV_FS_SECURITY
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 ext3 filesystem.
+ labels in the ext3dev/ext4 filesystem.

If you are not using a security module that requires using
extended attributes for file security labels, say N.
@@ -240,31 +241,31 @@ config JBD2
tristate
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 ext3dev/ext4 file system, but it could also be used to add
+ both 32-bit and 64-bit block numbers. It is currently used by
+ the ext3dev/ext4 filesystem, but it could also be used to add
journal support to other file systems or block devices such
- as RAID or LVM.
+ as RAID or LVM.

- If you are using the 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 ext3dev/ext4, you need to say Y here. If you are not
+ using ext3dev/ext4 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 ext4 into the kernel,
+ To compile this device as a module, choose M here. The module will be
+ called jbd2. If you are compiling ext3dev/ext4 into the kernel,
you cannot compile this code as a module.

config JBD2_DEBUG
- bool "JBD2 (ext4) debugging support"
+ bool "JBD2 (ext3dev/ext4) debugging support"
depends on JBD2
help
- If you are using the ext4 journaled file system (or potentially any
- other file system/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 are using the ext3dev/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 > /proc/sys/fs/jbd2-debug", where N is a number between
- 1 and 5, the higher the number, the more debugging output is
+ 1 and 5. The higher the number, the more debugging output is
generated. To turn debugging off again, do
"echo 0 > /proc/sys/fs/jbd2-debug".

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