tree bcb2f27996650a4c115274b755a6bd38e2f304b6
parent b94a8b36be4e74d8caff387fadf71f9f97c2ea69
author Eric Sandeen <sandeen@redhat.com> 1423800457 -0500
committer Theodore Ts'o <tytso@mit.edu> 1423800457 -0500

ext4: ignore journal checksum on remount; don't fail

As of v3.18, ext4 started rejecting a remount which changes the
journal_checksum option.

Prior to that, it was simply ignored; the problem here is that
if someone has this in their fstab for the root fs, now the box
fails to boot properly, because remount of root with the new options
will fail, and the box proceeds with a readonly root.

I think it is a little nicer behavior to accept the option, but
warn that it's being ignored, rather than failing the mount,
but that might be a subjective matter...

Reported-by: Cónräd <conradsand.arma@gmail.com>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>