> Where did you check for the existence of a ->show_options method for
quoted text
> unionfs?  Unionfs does implement ->show_options and supports all of the
> mount/remount options.  See:
> 
> <http://git.kernel.org/?p=linux/kernel/git/ezk/unionfs.git;a=blob;f=fs/unionfs/super.c;h=986c980261a5b171147d66ac05bf08423e2fd6b6;hb=HEAD#l963>
> 
> The unionfs ->remount code supports branch-management options which can
> add/del/change a branch, but we don't show those directly in ->show_options;
> it makes more sense to show the final (and thus most current) branch
> configuration.
> 
> Could you update your records please?

Sure.  Sorry about that, I did actually look at unionfs, and it was
just an administration error and bad memory (in my head).

quoted text
> BTW, I should be able to use your save_mount_options().

It is probably better not to use save_mount_options().  Especially,
since unionfs implemets a remount, that changes the tree only
partially AFAICS.

Miklos
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