ext4: Remove journal_checksum mount option and enable it by default

There's no real cost for the journal checksum feature, and we should
make sure it is enabled all the time.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

1 files changed, 1 insertions, 7 deletions

diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt
index 7be02ac5fa36..3e329dbac785 100644
--- a/Documentation/filesystems/ext4.txt
+++ b/Documentation/filesystems/ext4.txt
@@ -134,15 +134,9 @@ ro                   	Mount filesystem read only. Note that ext4 will
                         mount options "ro,noload" can be used to prevent
                         writes to the filesystem.
 
-journal_checksum        Enable checksumming of the journal transactions.
-                        This will allow the recovery code in e2fsck and the
-                        kernel to detect corruption in the kernel.  It is a
-                        compatible change and will be ignored by older kernels.
-
 journal_async_commit    Commit block can be written to disk without waiting
                         for descriptor blocks. If enabled older kernels cannot
-                        mount the device. This will enable 'journal_checksum'
-                        internally.
+                        mount the device.
 
 journal=update          Update the ext4 file system's journal to the current
                         format.