Hi,
On Sun, 2007-06-10 at 18:27 +0000, Pavel Machek wrote:
> > Once a f/s is read-only, there should be NO writing to
> > it. Right?
>
> Linux happily writes to filesystems mounted read-only. It will replay
> journal on them.
Only at mount time, not on unmount; and it does check whether the
underlying device is truly readonly or not first (assuming
bdev_read_only() is working on the device in question.)
--Stephen
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