On Sat, Jan 12, 2019 at 05:36:40PM -0700, Andreas Dilger wrote:
> Don't update the superblock s_rev_level during mount if it isn't
> actually necessary, only if superblock features are being set by
> the kernel. This was originally added for ext3 since it always
> set the INCOMPAT_RECOVER and HAS_JOURNAL features during mount,
> but this is not needed since no journal mode was added to ext4.
>
> That will allow Geert to mount his 20-year-old ext2 rev 0.0 m68k
> filesystem, as a testament of the backward compatibility of ext4.
>
> Fixes: 0390131ba84f ("ext4: Allow ext4 to run without a journal")
> Signed-off-by: Andreas Dilger <adilger@xxxxxxxxx>
Thanks, applied. I had to move the declaration of
ext4_update_dynamic_rev() earlier as Geert suggested.
- Ted
