Re: [PATCH 0/6] overlay filesystem prototype

[Neil Brown]

On Sun, 05 Sep 2010 19:37:10 +0900
"J. R. Okajima" <hooanon05@xxxxxxxxxxx> wrote:

> 
> Miklos Szeredi:
> > Changes since the last version:
> 	:::
> >  - get write ref on the upper layer on mount unless the overlay
> >    itself is mounted read-only
> 
> I think it a good approach.
> Although it may be harmless, write-ref will not be put when a user
> executes,
> - mount -o ro /overlay
             ^remount,   I assume
> - umount /overlay
> It will be easy to fix by implementing s_op->remount().

Something like this?

(I have a few other patches queued up, but haven't tested anything properly
yet).

NeilBrown